CN103565397A - Eye examination device - Google Patents

Eye examination device Download PDF

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Publication number
CN103565397A
CN103565397A CN201310325034.3A CN201310325034A CN103565397A CN 103565397 A CN103565397 A CN 103565397A CN 201310325034 A CN201310325034 A CN 201310325034A CN 103565397 A CN103565397 A CN 103565397A
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CN
China
Prior art keywords
display
inspection
sighting target
unit
eye
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310325034.3A
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Chinese (zh)
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CN103565397B (en
Inventor
铃木陵司
野澤宪嗣
金澤雄一郎
平山幸人
小林俊洋
细井良晋
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Nidech K K
Original Assignee
Nidech K K
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2012170445A external-priority patent/JP2014028068A/en
Priority claimed from JP2012170446A external-priority patent/JP6079989B2/en
Priority claimed from JP2012170447A external-priority patent/JP6057056B2/en
Application filed by Nidech K K filed Critical Nidech K K
Publication of CN103565397A publication Critical patent/CN103565397A/en
Application granted granted Critical
Publication of CN103565397B publication Critical patent/CN103565397B/en
Expired - Fee Related legal-status Critical Current
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0064—Health, life-saving or fire-fighting equipment
    • F21V33/0068—Medical equipment

Abstract

The present invention provides an eye examination device, comprising: a casing in which a concave mirror arranged on a reference axis is stored; a display for displaying sighting marks and arranged outside the reference axis outside the casing; and a transparent panel, wherein a surface arranged at a front side of the casing on the reference axis enables a sighting mark light beam from the display to transmit, and enables the sighting mark light beam reflected by the concave mirror to transmit again and then emit towards the outer side of the casing, the transparent panel is configured in the way that a normal direction of the surface of the front side of the transparent panel is inclined relative to the reference axis. The eye examination device can present the sighting marks in the way capable of realizing accurate examination. In the eye examination device, a reflecting light of the sighting mark light beam reflected by the surface of the front side of the transparent panel is towards the direction deviating from the examinated eye, therefore, the influence of ambient light outside the casing can be reduced.

Description

Ophthalmic unit
Technical field
The present invention relates to present the ophthalmic unit for the inspection sighting target of visual function evaluation.
Background technology
Japanese Patent Publication communique Unexamined Patent discloses for No. 06-197867 a kind of to being subject to inspection eye to present the visual target presenting device of inspection sighting target (checking sighting target picture).In the casing of this device, dispose sighting target panel, the light sources such as Halogen light that sighting target panel is thrown light on, the beam splitter being obliquely installed and concave mirror.The sighting target light beam (sighting target) of the sighting target panel from by light illuminating, by beam splitter and concave mirror guiding, be subject to inspection eye.
The in the situation that of described device, the face in the front side of casing is provided with protective cover.Parts in protective cover protection casing.In addition, on protective cover, be provided with the window that presents with lamella lucida.The sighting target light beam penetrating in casing is from presenting window to penetrated by inspection eye.
, in described device, for to being subject to inspection eye to show sighting target, also can consider to substitute sighting target panel with display.In this case, because the light quantity of display is low, the deficiency in light quantity of the sighting target presenting by beam splitter.Therefore can not carry out correct inspection.In addition, large-sized beam splitter was obliquely installed in the past, and the space of therefore saving casing exists limit.
In addition the window that presents that, shoots out the sighting target light beam in casing is lamella lucida.Therefore from the high light outside casing, be presented the lamella lucida reflection of window, reflected light incides in person under inspection's eye sometimes.In this case, can not carry out accurately visual function evaluation.
Summary of the invention
By ophthalmic unit provided by the invention, on display, show sighting target.In addition, described ophthalmic unit can be realized and saves space and can present sighting target can realize the correct mode checking.
The present invention has following formation.
Ophthalmic unit of the present invention (this ophthalmic unit) comprising: casing, in inside, take in the concave mirror being configured on reference axis; Display, shows sighting target, is configured in outside the described reference axis of described casing outside; And transparent panel, on described reference axis, be disposed at the face of the front side of described casing, make to see through from the sighting target light beam of described display, and after making again to be seen through by the sighting target light beam after described concave mirror reflection, outside described casing, penetrate, the mode that described transparent panel tilts with respect to described reference axis with the normal direction of the face of the front side of described transparent panel configures.
This ophthalmic unit shows sighting target on display.In addition, this ophthalmic unit can present sighting target can realize the mode of correct inspection.In this ophthalmic unit, by the reflected light of the described sighting target light beam of the face of the front side of described transparent panel reflection, towards the direction from departed from by inspection eye, therefore can be reduced the impact of the surround lighting of casing outside.
Accompanying drawing explanation
Fig. 1 represents the outside drawing of ophthalmic unit of the present invention.
Fig. 2 is the front view of ophthalmic unit.
Fig. 3 is the cutaway view of ophthalmic unit.
Fig. 4 is the front view of sighting target display part.
Fig. 5 is the figure that the allocation position of display is described.
Fig. 6 (a) and Fig. 6 (b) are the brief configuration figure of casing.
Fig. 7 (a) and Fig. 7 (b) are the figure that the portion of keeping out of the way of measuring unit is described.
Fig. 8 is the control block diagram of ophthalmic unit.
Fig. 9 (a) and Fig. 9 (b) are with checking with light path and the figure that closely describes with the switching of light path with inspection to far away.
Figure 10 (a) and Figure 10 (b) mean the figure of the brief configuration of sighting target display part and optical path switch module part.
Figure 11 means the figure of the variation of ophthalmic unit.
Description of reference numerals
2 eye-examing stage unit
3 sighting target display units
4 sighting target display parts
5 casings
6 outward appearance lids
8 subjective sense type eye ametropia force measuring units
10 holding units
20 supporting arms
45 display
50 concave mirrors
51 protective covers
52 transparent panels
53 shielding portions
60 optical path switch modules
62 reflecting mirrors
70 control parts
72 memorizeies
81 inspection hatch
90 controllers
The specific embodiment
With reference to the accompanying drawings embodiments of the present invention are described.Fig. 1～Figure 11 is the figure that the structure of the ophthalmic unit of present embodiment is described.
< summary >
The ophthalmic unit 1 that the overview of the ophthalmic unit 1 of embodiment of the present invention is described comprises that sighting target display unit 3 and subjective sense type eye ametropia force measuring unit 8(are designated hereinafter simply as measuring unit 8).Ophthalmic unit 1 implements to be subject to inspection eye far checks (far away from checking) and near with visual function (visual function that nearly side is looked) inspection (closely using inspection) with visual function (distant place depending on visual function).In ophthalmic unit 1, sighting target display unit 3 presents sighting target with checking by light path (distant place depending on inspection light path) to being subject to examine by far away.Measuring unit 8 has pair of right and left lens chamber unit 80.Lens chamber unit 80 for example has inspection hatch 81 and handover configurations, in the optical element (correcting lens) of inspection hatch 81.The configuration of optical element (position) can be switched.For example, in ophthalmic unit 1, examined the inspection hatch 81 of eye fixation measuring unit 8, to this, be subject to inspection eye to present inspection sighting target, check be subject to inspection eye far use visual function.
In addition, ophthalmic unit 1 has eye-examing stage (eye-examing stage unit) 2 and maintaining part (holding unit) 10.Holding unit 10 is for keeping sighting target display unit 3.In addition, holding unit 10 is so that the mode of the position that it is equal height that inspection hatch 81 is positioned at reference axis L1 keeps measuring unit 8.For example, holding unit 10 keeps sighting target display unit 3 so that sighting target display unit 3 is positioned at the mode on the top of eye-examing stage unit 2.
In addition, sighting target display unit 3 can not remain on eye-examing stage unit 2 by holding unit 10 yet.For example holding unit 10 can be also wall-hanging.In this case, sighting target display unit 3 is arranged on wall.
The display 45 that sighting target display unit 3 has concave mirror 50 and shows sighting target.In sighting target display unit 3, the sighting target light beam being penetrated from display 45 by concave mirror 50 reflections.Thus, sighting target display unit 3 presents sighting target optically regulation, far away from checking in distance (apart from the distance that is subject to inspection).That is, concave mirror 50 be configured on reference axis L1, stipulate on optics for inspection position with checking far away (with respect to the position that is subject to inspection).
For example, in sighting target display unit 3 so that the mode that the normal direction of the picture of display 45 tilts with respect to the optical axis O1 of concave mirror 50 configures the picture of concave mirror 50 and display 45.In this case, the light path of sighting target light beam is left from the optical axis O1 of concave mirror 50.
For example, as display 45, can use LCD(Liquid Crystal Display(liquid crystal display)) or organic EL(Electro Luminescence(electroluminescent)).
For example, concave mirror 50 is configured in along seeing on reference axis (central shaft of the right and left eyes) L1 of the positive direction of visual lines (frontal) that is subject to inspection eye.For example, concave mirror 50 is accommodated in casing 5.
For example, casing 5 is configured in the frontal of measuring unit 8.Casing 5 for example has the window of presenting (for example transparent panel 52).This transparent panel 52 be configured in reference axis L1 upper and be positioned at concave mirror 50 before.Transparent panel 52 makes to see through from the sighting target light beam of display 45.In addition, transparent panel 52 makes the sighting target light beam being reflected by concave mirror 50 see through again.Thus sighting target light beam to the outer ejaculation of casing 5.
The beam splitter that the sighting target display unit 3 with described structure does not produce the light loss of large sighting target light beam by meeting presents sighting target.Therefore,, in sighting target display unit 3, even if do not use the display that can send large light quantity, when the inspection of testing eyesight etc., also can guarantee needed brightness.Therefore can correctly check.In addition, casing 5 does not have beam splitter.Therefore, can realize the slimming of casing 5.Thus, ophthalmic unit 1 becomes the ophthalmic unit of space saving.
Below each parts are specifically described.Successively display 45, transparent panel 52, optical path switch module 60 and subjective sense type eye ametropia force measuring unit are described below.In addition, also can each parts are appropriately combined.In addition, each parts also can be used as independently parts and implement.
< display >
Display 45 is positioned at the outside of casing 5 and is configured in outside reference axis L1.In addition, display 45 is configured in outside the scope at the regulation visual angle that is subject to inspection eye of the inspection hatch 81 of watching measuring unit 8 attentively.
For example, display 45 is configured in the outside of casing 5 and is positioned at the sighting target light beam making from display 45 and passes through transparent panel 52 towards the position of concave mirror 50 from casing 5 outsides.For example, display 45 is configured in measuring unit 8 around, from being subject to inspection eye side to penetrate sighting target light beam towards concave mirror 50.In addition, for example, the forehead pad 82 that display 45 is configured in measuring unit 8 around.For example, display 45 is configured in the top of the forehead pad 82 of measuring unit 8.
Display 45 is configured as described above, thus, can widen person under inspection's the visual field.What person under inspection observed casing 5 inside by transparent panel 52 far uses sighting target.Now, person under inspection do not see than protection panel 51 more rely on person under inspection's side, as the display 45 of unnecessary structural member.Thus, can suppress or prevent that person under inspection from watching display 45 attentively.Its result,, can reduce and consider that person under inspection sees the structural member beyond sighting target and regulates the situation that is subject to inspection eye (sight line) when checking far away.Therefore can carry out accurately visual function evaluation.
Outside the scope at the regulation visual angle when in addition, also can be not display 45 not being configured in to person under inspection's (being subject to inspection eye) and watching the inspection hatch 81 of measuring unit 8 attentively.For example, display 45 can be configured near person under inspection's the forehead of casing 5 outsides and be positioned at make from the sighting target light beam of display 45 from casing 5 outside by transparent panel 52 position towards concave mirror 50.Like this, also display 45 can be configured near person under inspection's forehead.Thus, when sighting target light beam penetrates to concave mirror 50, sighting target light beam diminishes towards the angle of incidence of concave mirror 50 incidents and the angle of reflection from concave mirror 50 reflections of sighting target light beam.Therefore can reduce the distortion of sighting target.
< transparent panel >
Transparent panel 52 is arranged on casing 5.The angle configurations that transparent panel 52 tilts with respect to reference axis L1 by the normal direction of the face of its front side (being subject to the face of inspection eye side).In addition, the angle of inclination of transparent panel 52 is configured to: the reflected light being produced by the reflection of the face of the front side of transparent panel 52 due to the light penetrating from display 45, and towards from being positioned at a direction that departed from by inspection for assigned position.
The high light that thus, can suppress display 45 is reflected by transparent panel 52 and incides and is subject in inspection eye and counteracts thus person under inspection to observe sighting target.In addition, can suppress to incide after by transparent panel 52 reflections and be subject in inspection eye from the surround lighting of person under inspection rear background and the surround lighting of ophthalmic unit 1 top.Therefore, can suppress to counteract thus person under inspection and observe sighting target.
For example, can be in casing 5, at the transparent panel 52 of the front face side of concave mirror 50 around, configuration curtain-shaped cover member (shielding portion 53).In this case, the transparent panel 52 that crested portion 53 surrounds, can comprise for be subject to inspection eye observation casing 5 inside sighting target present window.By shielding portion 53 being set, becoming the structure of the inside that is difficult to see casing 5.Certainly, present window and also can only by transparent panel 52, be formed, also can there is no shielding portion 53.
In addition, for example, ophthalmic unit 1 can have top curtain-shaped cover member (covering lid 6).This covering lid 6 for example covers the top from transparent panel 52 to the light path display 45.In addition, for example, ophthalmic unit 1 also can have side curtain-shaped cover member (covering lid 6).This covering lid 6 for example covers the side from transparent panel 52 to the light path display 45.By described curtain-shaped cover member is set, surround lighting that can Fluorophotometry lamp etc. incides on the optics in device.
In addition, the covering lid 6 of present embodiment is simultaneously as top curtain-shaped cover member and side curtain-shaped cover member., top curtain-shaped cover member and side curtain-shaped cover member can be also different parts.Ophthalmic unit 1 also can have at least any one parts in top curtain-shaped cover member and side curtain-shaped cover member.
< light path switching part >
In addition, ophthalmic unit 1 has light path switching part and angle changing unit (the first angle changing unit).Light path switching part can switch far away light path with checking by light path with between closely by light path for inspection (closely square depending on inspection light path).Closely with checking by light path for the sighting target light beam from display 45 is not subject to inspection eye by concave mirror 50 guiding.Angle changing unit (the first angle changing unit) far away with checking and closely with the angle of inclination of changing the picture of display 45 in inspection.
Light path switching part light path far away with checking by light path and closely switching between by light path with inspection.When this switches, the angle of inclination of the picture of angle changing unit change display 45, makes person under inspection's (being subject to inspection eye) can observe the picture that is positioned at the display vertical with reference axis L1 45.In addition, the angle of inclination of the picture of display 45 also can with reference axis L1 out of plumb.As long as the angle of inclination of the picture of display 45 is set the sighting target that distortion can be obtained alleviating for and is projected to and be subject to inspection eye upper just passable.That is, as long as the angle of inclination of the picture of display 45 is substantially vertical just passable with reference axis L1.
For example, light path switching part also can have reflection part (reflecting mirror) 62, and reflecting mirror 62 can insert and be subject between inspection eye and concave mirror 50 or from being subject to disengaging between inspection eye and concave mirror 50.Reflection part (reflecting mirror) 62 be configured in concave mirror 50 and be subject on the reference axis L1 between inspection eye, stipulate on optics for nearly inspection position with checking (with respect to the position that is subject to inspection).Reflecting mirror 62 by the sighting target light beam penetrating from display 45 along reference axis L1 to being examined eye reflex.
Light path switching part (optical path switch module 60) is subject between inspection eye and concave mirror 50 or reflection part 62 is departed between inspection eye and concave mirror 50 from being subject to by reflection part 62 is inserted, can make light path far away with checking by light path and closely switching between by light path with inspection.For example, as reflection part 62, can enumerate plane mirror, convex mirror, concave mirror.In this case, for example, when angle changing unit is switched by light path in Xiang Jinyong inspection, the angle of inclination of picture of change display 45, make display 45 picture normal direction with from advanced and to be reflected the direction of light (virtual light) of parts 62 reflections unanimous on the whole along reference axis L1 by inspection eye.; when angle changing unit is switched by light path in Xiang Jinyong inspection; the angle of inclination of picture of change display 45, makes the sighting target light beam that the normal directions of the picture along display 45 penetrated by reflection part 62 to towards reflected by the direction of the reference axis L1 of inspection eye.
In addition, when angle changing unit is switched by light path in Xiang Jinyong inspection, also can not change the angle of inclination of the picture of display 45, make display 45 picture normal direction with from advanced and to be reflected the direction of light of parts 62 reflections consistent along reference axis L1 by inspection eye.The normal direction of the picture of display 45 with from be subject to inspection eye along reference axis L1 advance and the direction of light that is reflected parts 62 reflections without in full accord.As long as angle changing unit is configured to: change angle of inclination, the sighting target that makes distortion to be obtained alleviating projects to and is subject to inspection eye upper just passable.; angle changing unit (parts at angle of inclination of the picture of change display 45) is as long as the angle of inclination of the picture of change display 45, make display 45 picture normal direction with from advanced and to be reflected the direction of light of parts 62 reflections unanimous on the whole just passable along reference axis L1 by inspection eye.
In addition, when angle changing unit is switched by light path in Xiang Yuanyong inspection, the angle of inclination of picture of change display 45, make display 45 picture normal direction with from be subject to inspection eye along reference axis L1 advance and the direction of the light (virtual light) that reflected by concave mirror 50 unanimous on the whole.That is, at Xiang Yuanyong, check while switching by light path that the angle of inclination of the picture of angle changing unit change display 45 makes the sighting target light beam that the normal directions of the picture from display 45 penetrated by concave mirror 50 to towards reflected by the direction of the reference axis L1 of inspection eye.
In addition, angle changing unit (parts at the angle of inclination of the picture of change display 45) is when Xiang Yuanyong inspection is switched by light path, also can not change the angle of inclination of the picture of display 45, make display 45 picture normal direction with from be subject to inspection eye along reference axis L1 advance and the direction of light that reflected by concave mirror 50 consistent.The normal direction of the picture of display 45 with from be subject to inspection eye along reference axis L1 advance and the direction of light that reflected by concave mirror 50 without in full accord.As long as angle changing unit is configured to: change angle of inclination, the sighting target that makes the distortion to obtain alleviating projects to and is subject to inspection eye upper just passable.; angle changing unit (parts at angle of inclination of the picture of change display 45) is as long as the angle of inclination of the picture of change display 45, make display 45 picture normal direction with from be subject to inspection eye along reference axis L1 advance and the direction of light that reflected by concave mirror 50 unanimous on the whole just passable.
As mentioned above, light path switching part is for switching-over light path, make reflection from the sighting target light beam of display 45 and this sighting target beam direction be subject to the reflection part of inspection eye, insert in the light path being subject between inspection eye and concave mirror 50 or make described reflection part from departed from by the light path between inspection eye and concave mirror 50.Or light path switching part, for switching-over light path, also can possess moving part, this moving part moves display 45 in the light path being subject between inspection eye and concave mirror 50.Can easily far away, with checking light path and closely using, check with switching-over light path between light path thus.In addition, follow switching-over light path, the angle of inclination of change display 45.Therefore,, in the front and back of switching-over light path, the sighting target that distortion can be obtained alleviating projects to and is subject on inspection eye.Thus, by showing that the display 45 of sighting target can present for carrying out the correct sighting target checking.
In addition,, in variation, for example, light path switching part (optical path switch module 60) also can have for changing the angle of inclination changing unit (the second angle changing unit) for reflection part at the angle of inclination of reflection part.In this case, light path switching part (optical path switch module 60) makes to be inserted into the reflection part 62 being subject between inspection eye and concave mirror 50, on reference axis L1, moves.And reflection part is with the angle of inclination of angle of inclination changing unit change reflection part 62, makes 62 sighting target light beams that penetrate from display 45 of reflection part along reference axis L1 to being examined eye reflex.Change thus near with inspection the near with checking distance of light path.In addition, as mentioned above, the angle of inclination of the picture of angle changing unit change display 45, make display 45 picture normal direction with from advanced and to be reflected the direction of light of parts 62 reflections unanimous on the whole along reference axis L1 by inspection eye.Not only can carry out thus far away from checking and closely with checking, also can carrying out the middle inspection apart from use.
In addition, for example, the variation of ophthalmic unit 1 also can have light path change mirror (reflecting mirror) 123, and this light path change mirror (reflecting mirror) 123 is configured near the forehead that is subject to inspection eye.In addition, far away, with checking, use in light path, display 120 also can be configured in concave mirror 50 sides.In this case, from the sighting target light beam of display 120, be reflected mirror (light path change mirror) 123 reflections, towards concave mirror 50.In this case, light path switching part, can be far away with checking by light path and near with checking with switching-over light path between light path by display 120 being inserted in the light path being subject between inspection eye and concave mirror 50 or making display 120 from departed from by the light path between inspection eye and concave mirror 50.In addition, in this case, the angle of inclination of angle changing unit change display 120, makes the picture of display 120 substantially vertical with reference axis L1.
< subjective sense type eye ametropia force measuring unit >
Whether measuring unit 8 according to using in visual function evaluation, moves being subject between the inspection position at the moment of inspection eye and retreating position.
For example, on holding unit 10, be provided with support (for example supporting arm 20).Support is so that measuring unit 8 can be subject to mobile mode between the inspection position at the moment of inspection eye and retreating position to support measuring unit 8.
For example, the second holding member (upper strut) 10b that holding unit 10 has the first holding member (pillar) 10a and extends from pillar 10a.Pillar 10a remains on casing 5 apart from the position that is placed on measuring unit 8 predetermined distances that check position.Upper strut 10b extends from pillar 10a.Upper strut 10b is used for keeping display 45, and from casing 5, direction person under inspection side is extended.Support is connected with upper strut 10b.That is, support, by holding unit 10, is arranged at sighting target display unit 3.
For example, support also can comprise supporting arm 20 and/or support unit (for example pillar).
For example, as the supporting arm 20 of support, be connected with upper strut 10b, can centered by link position O, rotate.Supporting arm 20 can make measuring unit 8 move between inspection position and retreating position by rotating.Can make thus ophthalmic unit 1 become compact, that is, can save space.
In addition, in the present embodiment, for example, preferably, in the situation that link position O is positioned at central shaft (central shaft of the right and left eyes) C from ophthalmic unit 1 position of departing to the above-below direction (the cardinal principle horizontal direction on the face of the upside of covering lid (outward appearance lid) 6) of paper (top view of Fig. 7 (a) and Fig. 7 (b)) is connected.Like this, by link position O is departed from from the central shaft C of ophthalmic unit 1, by rotating support arm 20 in little movable range, just can make measuring unit 8 move thus.Thus, when measuring unit 8 is moved, the movable range of supporting arm 20 diminishes.Therefore reduced the probability that supporting arm 20 or measuring unit 8 contact with inspection personnel.
In addition, as the support unit of support, comprise portion's of moving up and down (for example known telescoping tube mechanism), and be arranged on upper strut 10b.The portion of moving up and down moves measuring unit 8 between inspection position and the retreating position above it.Thus, measuring unit 8 can move between inspection position and retreating position.Thus, when measuring unit 8 is moved, before measuring unit 8 can not cross inspection personnel's face.Therefore can reduce the probability that measuring unit 8 contacts with inspection personnel.
In addition, in the present embodiment, support is connected with measuring unit 8.In addition, this support is arranged at sighting target display unit 3 by holding unit 10.Be not limited to this, for example, also can by holding unit 10, support and sighting target do not presented to portion's (sighting target display unit 3) and be connected.
< embodiment >
With reference to the accompanying drawings mode of the present invention is described.Fig. 1 is the outside drawing of ophthalmic unit 1.Fig. 2 is the front view that the directions X from Fig. 1 represents ophthalmic unit 1.In addition,, in the ophthalmic unit shown in Fig. 2, subjective sense type eye ametropia force measuring unit 8 is disposed at retreating position (detailed content is narrated in the back).Fig. 3 is the A-A face cutaway view of Fig. 2 of ophthalmic unit 1.In addition, in Fig. 3, omitted measuring unit 8.
Ophthalmic unit 1 comprises that eye-examing stage unit 2, sighting target display unit 3, subjective sense type eye ametropia force measuring unit 8(are designated hereinafter simply as measuring unit 8).Eye-examing stage unit 2 comprises platform 2a, the 2b of driver element up and down and altitude mixture control switch 2c for platform 2a is moved up and down.The index signal that altitude mixture control switch 2c moves up and down for control station 2a for inspection personnel's input.Upper and lower driver element 2b has the drive sources such as motor.Drive source drives according to the index signal to switch 2c input.
Sighting target display unit 3 comprises sighting target display part 4, casing 5, outward appearance lid (covering lid) 6 and optical path switch module 60.Sighting target display part 4 has the display 45 that shows sighting target.Casing 5 has been taken in concave mirror 50.About optical path switch module 60, narrate in the back.
Sighting target display unit 3 is kept by holding unit 10.Holding unit 10 has the pillar 10a being uprightly arranged on platform 2a.In the example of preferred holding unit 10, casing 5 is arranged on the first holding member (pillar) 10a of the end that is uprightly arranged on platform 2a.That is, casing 5 is kept by pillar 10a.Holding unit 10 has the second holding member (upper strut) 10b.Upper strut 10b extends from pillar 10a.In order to keep display 45, upper strut 10b direction person under inspection side (front side of casing 5) from casing 5 is extended.Sighting target display part 4 is installed on the place ahead part of upper strut 10b.
In addition, measuring unit 8 is kept by holding unit 10, can between measuring position and retreating position, move.As preferred example, measuring unit 8 passes through support unit (for example, supporting arm) 20 remaining on upper strut 10b in mode mobile between measuring position and retreating position.In ophthalmic unit 1, sighting target display unit 3, eye-examing stage unit 2 and measuring unit 8 also can form one., ophthalmic unit 1 can not have measuring unit 8 yet.
Measuring unit 8 has pair of right and left lens chamber unit 80.Lens chamber unit 80 has respectively inspection hatch 81.To being subject to, examine various optical elements (spherical lens, cylindrical lens, auxiliary lens an etc.) handover configurations of giving refractive power in inspection hatch 81.In addition, measuring unit 8 has forehead pad 82.Forehead pad 82 is the position of inspection hatch 81 and be subject to the position relationship that the set positions of inspection eye is regulation.As shown in Figure 1, inspection hatch 81 is configured to when measuring unit 8 is positioned at measuring position, and inspection hatch 81 is positioned at the height of reference axis L1 that is presented the regulation of sighting target by concave mirror 50.
When far with inspection, in sighting target display unit 3, from the sighting target light beam that is configured in the display 45 of casing 5 outsides, by concave mirror 50, reflected, towards being subject to inspection eye.What sighting target display unit 3 was optically stipulated is far away for example, with checking that distance (inspection of 5m distance) presents sighting target.In addition, near when checking, in sighting target display unit 3, at concave mirror 50 be subject to insert reflecting mirror 62 between inspection eye.Thus, from the sighting target light beam of display 45, be reflected parts 62 reflections, towards being subject to inspection eye.Sighting target display unit 3 is near for example, with checking that distance (40cm) presents sighting target regulation.That is, sighting target display unit 3 is switched to the nearly sighting target display unit of using.Sighting target display unit 3 is not to present sighting target by producing the mode of the beam splitter of large sighting target light beam light loss.Therefore,, in sighting target display unit 3, even if do not use the display that produces large light quantity, testing eyesight while waiting inspection, also can guarantee needed brightness.Therefore can correctly check.In addition, casing 5 does not have beam splitter.Therefore can realize the slimming of casing 5.Thus, ophthalmic unit 1 becomes the ophthalmic unit of space saving.
< sighting target display part >
As shown in Figure 3, sighting target display part 4 comprises the display 45 of support 41 and demonstration sighting target.Display 45 is supported portion's 41 supportings.Support 41, by the axle (turning cylinder) 42 of narrating below, remains on pedestal 65.Pedestal 65 is supported by holding unit 10.Thus, sighting target display part 4 is held unit 10 supportings.On display 45, show the inspection sighting targets such as Landolt ring.For example, as display 45, can use LCD(liquid crystal display) or organic EL(electroluminescent).In the present embodiment, display 45 is used LCD.
Fig. 4 represents the front view of sighting target display part 4.Display 45 is bearing on support 41.Dispose figure on support 41 in, there is no the substrate of the display 45 that represents etc.On the surface of support 41, be provided with the mask plate (lid) 49 for parts such as covered substrates.The picture that mask plate 49 is configured in display 45 around.Mask plate 49 prevents from being subject to inspection eye (person under inspection) to see display 45 unnecessary object around.Mask plate 49 is for example formed by black acrylic resin or the iron plate that has been coated with black.Can suppress or prevent thus revealing display 45 substrate around etc. for showing to the picture that is subject to inspection eye to present sighting target.In addition,, by using black side cover plate 49, the background of the sighting target of projection can be become to black.Easily confirm thus sighting target.Mask plate 49 can certainly not be black.
Fig. 5 is the figure that the allocation position of display 45 is described.Outside the scope of the visual angle α 1 of regulation when display 45 is configured in the inspection hatch that person under inspection watches measuring unit 8 attentively (an inspection eye window) 81 and observes sighting target.That is, visual angle α 1 is the visual angle as center reference axis (central shaft of the right and left eyes) L1 of the direction of visual lines when being subject to inspection eye (person under inspection) to see front by the inspection hatch 81 of measuring unit 8.According to being located in measuring unit 8 than the openings of sizes that is subject to the inspection hatch 81 of the farther side of inspection eye, design visual angle α 1.The visual angle α 1 of measuring unit 8 for example, centered by reference axis L1, is configured to 40 degree.In addition, the upper-lower position of reference axis L1 is substantially identical with the measurement optical axis (being configured in the optical axis of the spherical lens on inspection hatch 81) of the inspection hatch 81 of measuring unit 8.In addition, the left and right middle position of the position, left and right of reference axis L1 and the inspection hatch 81 of left and right is substantially identical.Concave mirror 50 is configured in along being positioned on the reference axis L1 of the direction of visual lines (frontal) that is subject to inspection eye of assigned position.
Concave mirror 50 handles are from the sighting target light beam that is configured in the display 45 outside reference axis L1, to being examined eye reflex.Therefore, concave mirror 50 is configured to the normal to a surface direction of the optical axis O1(concave mirror 50 of concave mirror 50) with respect to reference axis L1, tilt.Display 45 is configured on the axle L2 as the axis of reflection of the reference axis L1 of concave mirror 50.The picture of display 45 is configured to respect to the inclination angle of reference axis L1: make the axle vertical with the picture of display 45 (normal direction) become the direction of axle L2.Thus, person under inspection, when seeing the sighting target of the picture from display 45 being reflected by concave mirror 50, can see described sighting target being positioned on the picture vertical with reference axis L1.
In the present embodiment, it is outer and as far as possible near the position of reference axis L1 that the upper-lower position of display 45 is configured to be positioned at the scope of visual angle α 1.For example, than forehead pad 82(inspection hatch 81 top sides, measuring unit 8 display 45 is configured in, person under inspection's forehead) near.Display 45 is from being subject to inspection eye side direction concave mirror 50 to penetrate sighting target light beam.In addition, the allocation position of the left and right directions of display 45 be with concave mirror 50 over against person under inspection's central authorities.
In addition, in the present embodiment, the optical axis O1 of concave mirror 50 is 5 ° with respect to the angle of inclination of reference axis L1.That is the sighting target light beam, penetrating from display 45 is reflected by concave mirror 50, guiding is subject to inspection eye.Angle of reflection is now 5 °.In addition, the axle L2 of display 45 is 5 ° with respect to the angle of inclination of optical axis O1.That is the angle of incidence when sighting target light beam, penetrating from display 45 incides concave mirror 50 is 5 °.
The angle of inclination of the angle of inclination of set and display device 45 and concave mirror 50 as described above.By setting like this, can suppress to produce distortion to the sighting target that presented by inspection eye.In addition, in the present embodiment, as mentioned above, display 45 is configured near person under inspection's forehead.Thus, when sighting target light beam penetrates to concave mirror 50, sighting target light beam diminishes from the angle of reflection of concave mirror 50 reflections to angle of incidence and the sighting target light beam of concave mirror 50 incidents.Therefore can reduce the distortion of sighting target.In ophthalmic unit 1, although in order to show that sighting target has been used display 45, can realize and save space and can present for carrying out the correct sighting target checking.
In addition, in the present embodiment, angle of incidence is 5 °, and angle of reflection is 5 °.These angles are not limited to this.Angle of incidence and angle of reflection are as long as so that sighting target is difficult to produce the mode of distortion sets just passable.
In addition, in the present embodiment, in the bottom of display 45, be provided with some containment walls 69.Thus, when using ophthalmic unit 1 in darkroom etc., can effectively remove from display 45 and be directly incident on the light beam that is subject to inspection eye.In addition, in the present embodiment, containment wall 69 is parts of covering lid 6.That is, containment wall 69 is outstanding parts in the bottom to display 45 of covering lid 6.
Configure as described above display 45, can widen person under inspection's the visual field.What person under inspection presented by sighting target that window (transparent panel 52) observes casing 5 inside far uses sighting target.Now, person under inspection does not see the display 45 that more relies on the unnecessary structural member of the conduct of person under inspection's side than protection panel 51.Can suppress or prevent that thus person under inspection from watching display 45 attentively.Its result,, can reduce and consider that person under inspection sees the structural member beyond sighting target and regulates the situation that is subject to inspection eye (sight line) when checking far away.Therefore can carry out accurately visual function evaluation.
In addition, in the present embodiment, from the visual angle of inspection hatch 81, be about 40 °., visual angle is not limited to this.Ophthalmic unit 1 also can have dissimilar measuring unit 8.Therefore, the size and dimension of inspection hatch 81 is diversified.Different according to type, the visual angle from inspection hatch 81 of measuring unit 8 is also different.In addition, visual angle is also according to from being changed to the distance of the inspection hatch 81 of measuring unit 8 by inspection eye.Therefore, preferably, according to visual angle, the allocation position of display 45 is finely tuned.In addition, in the present embodiment, preferably, person under inspection's forehead touches forehead pad 82.Thus, make from fixed to the distance of the inspection hatch 81 of measuring unit 8 by inspection eye.
< optical path switch module >
Optical path switch module 60 comprises support 61, reflecting mirror (for example plane mirror) 62 and handle 63.Optical path switch module 60 inserts along seeing the reference axis L1 of the positive direction of visual lines that is subject to inspection eye or departing from from the reference axis L1 along seeing the positive direction of visual lines that is subject to inspection eye reflecting mirror 62.Thus, optical path switch module 60 light path far away with checking by light path and closely switching (detailed content is narrated in the back) with inspection between by light path.
< casing >
Fig. 6 (a) and Fig. 6 (b) are the concise and to the point pie graphs of casing 5.Fig. 6 (a) is for the figure of the optical arrangement of each parts is described.Fig. 6 (b) is the figure that the surface reflection of protection panel (protective cover) 51 is described.Casing 5 is the containers of accommodating concave mirror 50.Casing 5 has protection panel 51, and protection panel 51 is disposed at the front side (reflecting surface side) of concave mirror 50.Protection panel 51 has transparent panel 52 and shielding portion 53.Transparent panel 52 comprises the transparent components such as acrylic resin or glass plate.Shielding portion 53 is configured in transparent panel 52 around.Transparent panel 52 makes from the sighting target display part 4(display 45 that is configured in casing 5 outsides) sighting target light beam pass through.In addition, transparent panel 52 passes through the sighting target light beam being reflected by concave mirror 50, to casing 5 outside ejaculations (taking-up).
In addition, casing 5 is not limited to take in the container of use.As long as it is just passable that casing 5 is configured to the structure that the reflecting surface of concave mirror 50 is protected from dust and with external contact.Casing 5 also can not have the shape of box-shaped.For example, casing 5 can be the casing that does not cover a part for concave mirror 50.For example, casing 5 can not cover the back side of concave mirror 50.As long as at least keep concave mirror 50 just can in concave mirror 50 position arbitrarily around by casing 5.Protection panel is configured in the front side of concave mirror 50.In addition, holding unit 10 also can double as casing 5.
Transparent panel 52 is that the sighting target of person under inspection while observing the sighting target of casing 5 inside presents window.Person under inspection, by the transparent panel 52 as sighting target window, sees sighting target in central authorities.For example, the inside of shielding portion 53 (box house) can painted black.In addition, in the inside of shielding portion 53, also can paste black optical filter.In addition, the inside of casing 5 is coated with black, thus, is difficult to see internal structure.On the concave mirror 50 that the casing 5 with protection panel 51 can suppress or prevent to form with high accuracy, adhere to dust and damage concave mirror 50.Concave mirror 50 is configured in along seeing on the reference axis L1 of the positive direction of visual lines that is subject to inspection eye.The mode that concave mirror 50 tilts with respect to reference axis L1 with the optical axis O1 of concave mirror 50 configures.The focal length of concave mirror 50 is designed to make display 45 and the optical distance that is subject to inspection eye to become the inspection distance of 5m.
At this, transparent panel 52 tilted configuration, make normal (normal direction) L3 of 52 of transparent panels with respect to the tilt angle theta of reference axis L1, become the angle (for example, more than 10 °) of regulation.Angle θ is configured to from sighting target display part 4(display 45) light during by the surface reflection of transparent panel 52, reflected light is towards from being subject to an angle for the direction that inspection eye departs from.Particularly display 45 sends high light.Therefore, if the light of the display 45 being reflected by transparent panel 52 incides, be subject to inspection eye, this reflected light can hinder and observe the sighting target presenting by concave mirror 50.In addition, incide situation about being subject in inspection eye after also having the surround lighting of person under inspection rear background and the surround lighting of ophthalmic unit 1 top by transparent panel 52 reflection.These surround lightings also can hinder person under inspection to observe sighting target.In this device, by setting angle θ as above for, can alleviate described problem.In addition, although in order to show that sighting target has been used display, can realize and save space and can present for carrying out the correct sighting target checking.
< covering lid >
In order to suppress surround lighting to the incident of the optics (display 45, reflecting mirror 62, protection panel 51 and concave mirror 50) of sighting target display unit 3, covering lid 6 is configured in to top position and the position, side of the upper strut 10b of holding unit 10.Covering lid 6 covers the top of ophthalmic units 1 and than the side of the top side of reference axis L1.Thus, the surround lighting can Fluorophotometry lamp etc. causing incides on the optics in device.In addition, in the present embodiment, covering lid 6 is configured in to top position and position, side.Be not limited to this, covering lid 6 can preferred disposition position up.In addition, covering lid 6 can not cover position, side.
The > of travel mechanism of < subjective sense type eye ametropia force measuring unit
The top position of the central shaft C of the face forming along inspection hatch 81 of supporting arm 20 supporting measuring units 8.The bearing position of measuring unit 8 is not limited to the top position on the central shaft C of the face that inspection hatch 81 forms certainly.As long as be formed in, position is just passable by supporting arm 20 supporting measuring units 8 arbitrarily.
Supporting arm 20 rotates freely (rotation freely) and is connected with holding unit 10.Thus, the measuring unit 8 being bearing on supporting arm 20 rotates freely with respect to holding unit 10.Inspection personnel is configured in measuring unit 8 to be subject on inspection inspection position at the moment.Person under inspection makes the forehead pad 82 of forehead touching measuring unit 8.Thus being subject to inspection eye to be configured in the position of regulation.Under this state, person under inspection observes sighting target by the inspection hatch 81 of measuring unit 8, implements thus visual function evaluation.
Measuring unit 8 rotates freely with respect to holding unit 10 by supporting arm 20.Fig. 7 (a) and Fig. 7 (b) are the figure for the portion of keeping out of the way of measuring unit 8 is described.Fig. 7 (a) is illustrated in a measuring unit 8 and is disposed at the front view of the device in the situation that checks position (measuring position) and sees the top view the situation of this device from F direction.Fig. 7 (b) is illustrated in measuring unit 8 is disposed to the front view of the device in the situation of retreating position and sees the top view the situation of this device from F direction.
Make measuring unit 8 mobile between inspection position and retreating position in the situation that, measuring unit 8 is centered by the link position O of supporting arm 20 and holding unit 10, in rotary moving on circular arc.That is, measuring unit 8 is in rotary moving centered by the link position O of supporting arm 20.Make thus measuring unit 8 move between inspection position and retreating position.
At this, for example, in order to prevent in the situation that link position O is positioned on central shaft C, mobile measuring unit 8 and, covering lid 6 or holding unit 10 phase mutual interference, measuring unit 8 and, the lengthening distance of covering lid 6 or holding unit 10.That is, increase the movable range of measuring unit 8 mobile on circular arc.Therefore the length W of supporting arm 20 becomes longer.
In the present embodiment, as shown in the top view of Fig. 7 (a) and Fig. 7 (b), at link position O, be positioned at respect to paper in the situation that the position of departing from from the central shaft C of ophthalmic unit 1 on above-below direction connects.Like this, by link position O is departed from from the central shaft C of ophthalmic unit 1, can make measuring unit 8 move in little movable range.That is, though shorten supporting arm W length, the movable range of measuring unit 8 is reduced, can not make measuring unit 8 and, covering lid 6 or holding unit 10 generation phase mutual interference yet.
For example,, on the top view of Fig. 7 (a) and Fig. 7 (b), for link position O is described than the situation of central shaft C (with respect to the left of the paper of front view) closer to the top.In this case, when measuring unit 8 is moved to the left that is subject to inspection eye, it rotates mobile scope (movable range) and diminishes.In addition, on top view, to make link position O than central shaft C more on the lower the situation of (with respect to the paper of front view right-hand) describe.In this case, in the situation that make measuring unit 8 to the right-hand movement that is subject to inspection eye, it rotates mobile scope (movable range) and diminishes.
As mentioned above, measuring unit 8 links into an integrated entity with sighting target display unit 3.In addition, link position O departs from from the central shaft C of ophthalmic unit 1.Thus, can make measuring unit 8 in less movable range, move (keeping out of the way).Can make like this device compacter and can realize and save space.In addition, because the movable range of measuring unit 8 is little, so reduced the probability that measuring unit 8 contacts with inspection personnel.
In addition, in the present embodiment, supporting arm 20 is connected with upper strut 10b.Supporting arm 20 can rotate (rotation) centered by link position.In addition, utilize the in rotary moving of supporting arm 20, measuring unit 8 moves between inspection position and retreating position.Be not limited to this, also can on the upper strut 10b of holding unit 10, install and move up and down portion.The portion of moving up and down makes measuring unit 8 to moving than inspection position retreating position closer to the top.For example, measuring unit 8 also can, by known telescoping tube mechanism, be connected with holding unit 10 in retractile mode.In this case, by making measuring unit 8 be moved upward (moving along the vertical direction), measuring unit 8 is kept out of the way.Descend in the use in the situation of moving part, when measuring unit 8 is moved, measuring unit 8 can not cross inspection personnel's face.Therefore can reduce the probability that measuring unit 8 contacts with inspection personnel.In addition, in utilization, move up and down measuring unit 8 is kept out of the way in the situation that, preferably measuring unit 8 does not enter in the visual field that is subject to inspection eye.
In addition, supporting arm 20 also can have the parts that can make measuring unit 8 move at above-below direction.The portion of keeping out of the way can certainly make measuring unit 8 move up and down with in rotary moving.
< control part >
Fig. 8 is the control block diagram of ophthalmic unit.On control part 70, be connected with measuring unit 8, display 45, controller 90 and memorizer 72 etc.In memorizer 72, store in a large number the data of the inspection sighting targets such as Landolt ring.In memorizer 72, for example store the sighting target data corresponding with vision value 0.1～2.0.Control part 70, according to the input signal that carrys out self-controller 90, recalls applicable sighting target data from memorizer 72.Control part 70 is controlled display 45, shows the sighting target recalling on the picture of display.In addition, in the present embodiment, come the signal of self-controller 90 by the cable that does not have in figure to represent, be input to control part 70.Come the signal of self-controller 90 also can be input to control part 70 by radio communications such as infrared ray.
< light path is switched >
In ophthalmic unit 1, be provided with optical path switch module 60.Optical path switch module 60 can be the light path of the sighting target light beam from display 45 far away with checking by light path and closely switching between by light path with inspection.Below light path is switched and described.Fig. 9 (a) and Fig. 9 (b) are with checking with light path and the figure that closely describes with the switching of light path with inspection for far away.Fig. 9 (a) represents far by inspection light path.Fig. 9 (b) represents closely by inspection light path.In addition,, in Fig. 9 (a) and Fig. 9 (b), omitted measuring unit 8.
In the situation that carrying out visual function evaluation, use far by inspection light path.In this case, display 45 penetrates sighting target light beam to concave mirror 50.Be subject to present the sighting target light beam being reflected by concave mirror 50 on inspection eye.Person under inspection observes the sighting target presenting.Can implement the visual function evaluation of use far away thus.
In the situation that carrying out visual function evaluation, use closely by inspection light path.In this case, reflecting mirror 62 is configured on the reference axis L1 being subject between inspection eye and concave mirror 50.In addition, the angle of inclination of picture of change (settings) display 45, make display 45 picture normal direction and from advanced and to be reflected the direction of light (bearing of trend of optical axis L 4) that parts 62 reflect unanimous on the whole along reference axis L1 by inspection eye.
The sighting target light beam penetrating from display 45, not by concave mirror 50, is subject to inspection eye along reference axis L1 guiding.By sighting target light beam, by concave mirror 50 guiding, be not subject to inspection eye, make to check that distance becomes short distance (for example 40cm).
In addition, when Xiang Yuanyong inspection is switched by light path, the angle of inclination of picture of change (settings) display 45, make display 45 picture normal direction with from advanced and to be reflected the direction of light (bearing of trend of optical axis L 2) that mirror 50 reflects unanimous on the whole along reference axis L1 by inspection eye.
Below the structure for switching-over light path is described.Figure 10 (a) means the concise and to the point pie graph of a part for the ophthalmic unit 1 that comprises sighting target display part 4 and optical path switch module 60 when checking by light path far away.Figure 10 (b) means the nearly concise and to the point pie graph of using same section while checking by light path.
Sighting target display part 4, as for changing the parts at the angle of inclination of display 45, comprises axle 42, rotation restrictor (jut 44a and retainer 44b) 44, display 45, jut 46 and spring 47.Each parts of sighting target display part 4 are maintained on pedestal 65.Display 45 is connected with axle 42 by support 41.Axle 42 remains on pedestal 65 in the mode that can rotate around its axle.Can change thus display 45 with respect to the angle of inclination of holding unit 10.
In addition, on axle 42, be connected with spring 47.Axle 42 utilizes the elastic force of spring 47 to bear power upward.This elastic force is the power (power that display 45 is tilted) that axle 42 is always rotated to B1 direction (with reference to Fig. 9 (a) and Fig. 9 (b)).Now, by rotation restrictor 44 restriction amounts of spin.That is, by rotation restrictor 44, the angle of inclination of display 45 is limited in to the scope of predetermined angular.Rotation restrictor 44 has jut 44a and retainer 44b.Jut 44a is located on axle 42.Retainer 44b remains on pedestal 65.If axle 42 has carried out the rotation of ormal weight, the jut 44a being located on axle 42 embeds in retainer 44b, thus, the rotation of axle 42 is stopped.The angle of inclination that can be regulation the angle of display 45 change (setting) thus, (the nearly LCD angle of inclination with checking use) (with reference to Figure 10 (a) and Figure 10 (b)).In addition, far away, when checking, the support 61 by reflecting mirror 62 is pressed the jut 46 being located on the support 41 of display 45 to B2 direction.Its result, can suppress the change (with reference to Figure 10 (a)) at the angle of inclination of display 45.
Optical path switch module 60 comprises support 61, reflecting mirror (for example plane mirror) 62, handle 63, axle (turning cylinder) 66, rotation restrictor (jut 67a, retainer 67b) 67 and magnet 68.Identical with sighting target display part 4, each parts of optical path switch module 60 are supported by holding unit 10 by pedestal 65.
Reflecting mirror 62 is connected with axle 66 by support 61.Axle 66 can rotate around its axle, remains on pedestal 65.Can change thus support 61 with respect to the angle of inclination of holding unit 10.Its result, can insert reflecting mirror 62 light path (reference axis L1) or reflecting mirror 62 is departed from from light path (reference axis L1).Now, identical with sighting target display part 4, the change amount at angle of inclination is rotated limiting unit 67(jut 67a and retainer 67b) restriction.That is, by rotation restrictor 67, set the on position of reflecting mirror 62.
In addition, on reflecting mirror 62, be connected with handle 63.Inspection personnel inserts reflecting mirror 62 by operating handle 63 or reflecting mirror 62 is departed from.Far away, when checking, the magnetic force by magnet 68 remains on reflecting mirror 62 position (retreating position) (with reference to Figure 10 (a)) of keeping out of the way from the light path of sighting target display part 4.In addition, the magnetic force of magnet 68 is than stronger for changing the elastic force of the spring 47 of using at the angle of inclination of display 45 of sighting target display part 4.Therefore, magnet 68 remains on retreating position reflecting mirror 62, and presses support 41 by jut 46.Angle of inclination (allocation position) when thus, magnet 68 remains on use inspection far away the angle of inclination of display 45.If inspection personnel's operating handle 63, inserts light path reflecting mirror 62, the magnetic force of magnet 68 does not act on jut 46.Its result, can utilize the angle of inclination with respect to reference axis L1 (with reference to Figure 10 (b)) of the elastic force change display 45 of spring 47.Following angle is set in the angle of inclination of display 45: when being subject to inspection eye to see the picture of the display 45 that is reflected mirror 62 reflections from reference axis L1 direction, this picture (picture of the virtual image) is seen as the picture vertical with reference axis L1.In addition, near with checking that by light road direction inspection personnel lifts handle 63 far with check with light path switching-over light path in the situation that.Can make thus reflecting mirror 62 move to retreating position.
In addition, in the present embodiment, magnet 68 remains on retreating position reflecting mirror 62.Be not limited to this, as long as optical path switch module 60 has, reflecting mirror 62 to be remained on to the parts of retreating position just passable.Such parts can be also for example latches.
Operate as described above, can be easily light path far away with checking by light path and closely switching between by light path with inspection.In addition, follow the switching of light path, the angle of inclination change of display 45.Even if therefore, in the situation that having switched light path, the sighting target that also distortion can be obtained alleviating projects to and is subject on inspection eye.Thus, although in order to show that sighting target has been used display, can present for carrying out the correct sighting target checking.
The inspection that presents sighting target to utilizing is briefly described.Inspection personnel indicates person under inspection person under inspection's forehead to be touched to the forehead pad 82 of measuring unit 8.By forehead pad 82 and forehead are touched, make to be subject to inspection eye to be positioned at the position of regulation.When far with inspection, make reflecting mirror 62 leave reference axis L1.Sighting target is presented on along seeing on the reference axis L1 of the positive direction of visual lines that is subject to inspection eye by concave mirror 50.Person under inspection, by the inspection hatch 81 of measuring unit 8, observes the sighting target presenting.Check thus visual function.Control part 70 is according to the selection signal controlling display 45 with sighting target far away of inputting by controller 90, thus being far presented on display 45 with sighting target.
When closely with inspection, as mentioned above, reflecting mirror 62 is inserted to reference axis L1, change in addition the angle of display 45.Control part 70 is according to the nearly selection signal controlling display 45 with sighting target of inputting by controller 90, thus being closely presented on display 45 with sighting target.
< variation >
In addition,, in the optical path switch module 60 of the present embodiment, inspection personnel utilizes handle 63 by manually carrying out the switching of light path.Be not limited to this, for example, optical path switch module 60 also can have driving mechanism, and this driving mechanism is for inserting reflecting mirror 62 or reflecting mirror 62 being departed from.In this case, far away with checking mode or closely use any one in checking mode by checking mode is switched to, control the driving mechanism of reflecting mirror 62, can switch light path.
In addition in the present embodiment, display 45 is configured in (near the forehead pad 82 of measuring unit 8) near person under inspection's forehead.By inserting reflecting mirror 62 or reflecting mirror 62 being departed from, can be light path far away with checking by light path and closely switching between by light path with inspection.Be not limited to this, as shown in figure 11, for example, the reflecting mirror 123 that also light path can be changed to use is configured near person under inspection's forehead.In this case, the display 120 of demonstration sighting target is configured in concave mirror 50 sides.Form thus far by inspection light path.The configuration condition of reflecting mirror 123 is identical with the example of the display 45 shown in Fig. 5.
The ophthalmic unit 1 with structure shown in Figure 11 also can be configured to: by inserting display 120 or making display 120 depart to come switching-over light path.In this case, when far with inspection, the sighting target light beam being penetrated by display 120 is reflected mirror 123 reflections, by being configured in the transparent panel 52 on casing 5, towards concave mirror 50, the sighting target light beam being reflected by concave mirror 50 is again by transparent panel 52, and guiding is positioned at being subject in reference axis L1 direction and examines eye.In addition, the angle of inclination of transparent panel 52 is conditions identical with aforementioned condition.
Near, when checking, display 120 is inserted on the reference axis L1 in the light path being subject between inspection eye and concave mirror 50.Be subject to the directly demonstration of observation display 120 of inspection eye.In addition, follow and insert display 120, in figure, do not have the angle of inclination changing unit representing that the angle of inclination of display 120 is changed to the nearly angle of inclination with checking use.With the angle of inclination that checks use, be closely the picture angle vertical with reference axis L1 that makes display 120.Like this light path is switched.In addition,, at the angle of inclination of setting the display 120 when checking far away according to the inclination of reflecting mirror 123 and concave mirror 50, make the picture (picture of the virtual image) and reference axis L1 arranged perpendicular of display 120.
In addition,, in another variation of the present embodiment, the reflecting mirror 62 shown in Fig. 9 (b) moves along reference axis L1.Thus can from closely to distance continuously change inspection distance.For example, follow reflecting mirror 62 to move along reference axis L1, the angle of inclination of display 45 is changed to the angle of inclination corresponding with the position of reflecting mirror 62 after movement.Not only can carry out thus far away from checking and closely with checking, also can carrying out middle inspection for distance.
In addition in the present embodiment, by the angle of inclination of change display 45, can alleviate to the distortion that is subject to the sighting target of inspection eye projection.Be not limited to this, ophthalmic unit 1(control part 70) also can process to alleviate distortion by image.The distortion of for example, sighting target shape when, control part 70 is considered to show sighting target on display 45.That is, control part 70 precomputes the distortion growing amount corresponding with each light path.The sighting target shape of described growing amount has been considered in control part 70 storages.The sighting target that has alleviated distortion can be projected to and is subject on inspection eye like this.
In addition, in an embodiment, as light path, switch and used the reflecting mirror 62 as plane mirror with parts., light path switching is not limited to this with parts.Light path is switched with parts so long as reflection part just can.For example, light path switching can be also concave mirror or convex mirror with parts.In the situation that light path switching is convex mirror with parts, light path shortens.Therefore for light path is for example become, for the nearly distance (40cm) with checking, preferably in the place ahead near concave mirror 50, insert convex mirror.
In addition, in the present embodiment, preferably according to the curve form of concave mirror 50 (multiplying power), adjust the angle of reflection of sighting target light beam to the angle of incidence of concave mirror 50 incidents and sighting target light beam from concave mirror 50 reflections.By the multiplying power of change concave mirror 50, also can change the angle of incidence and the angle of reflection that produce distortion.For example, use in the present embodiment in the situation of other concave mirrors with the multiplying power higher than concave mirror 50, preferably adjust angle of incidence and angle of reflection, make the difference of angle of incidence and angle of reflection less.
In addition, the reflector shape of concave mirror 50 can not be also sphere.For example, concave mirror 50 can be also aspherical mirror, free form surface mirror.
In addition concave mirror 50 can be configured on reference axis (central shaft of the right and left eyes) L1 of the frontal while being subject to inspection positive soon.
In addition, by display 45 being configured near person under inspection's forehead, when sighting target light beam is penetrated to concave mirror 50, reduced to the angle of incidence of concave mirror 50 incidents with from the angle of reflection of concave mirror 50 reflex times.Therefore can reduce the distortion of sighting target.
In addition the picture that the structure tilting as the picture that makes display 45, is not limited to display 45 is vertical.The angle of inclination of the picture of display 45 is without making picture completely vertical with reference axis L1, so long as be inclined to the sighting target that distortion can be obtained alleviating, to project to the degree being subject on inspection eye just passable.That is, substantially vertical just passable as long as the angle of inclination of the picture of display 45 is inclined to.
In addition, the structure at angle of inclination as the picture of change display 45, be not limited only to following structure: at Xiang Jinyong, check while switching by light path, so that the consistent mode of direction that is reflected the axle after parts 62 reflect with respect to the normal direction of the picture of display 45 and reference axis L1 changes.The direction that the change at the angle of inclination of the picture of display 45 is reflected the axle after parts 62 reflections without the normal direction and the reference axis L1 that make with respect to the picture of display 45 is in full accord.So long as can make angle of inclination be altered to the sighting target that distortion can be obtained alleviating, to project to the structure being subject on inspection eye just passable.That is, the structure at angle of inclination of the picture of change display 45, so long as can be altered to, to make to be reflected the direction of the axle after parts 62 reflect structure unanimous on the whole with respect to the normal direction of the picture of display 45 and reference axis L1 just passable.
Mask plate 49 is such as being formed by black acrylic resin or the iron plate etc. that has been coated with the coating of black.Can prevent thus beyond the picture of the sighting target that is subject to present on inspection eye display 45 substrate around etc. of appearing before one's eyes.When the inspection hatch 81 that also can watch measuring unit 8 attentively person under inspection is observed sighting target, display 45 is configured to be positioned at outside visual angle α 1 scope from the regulation of inspection hatch 81.
In addition also display 45 can be configured on the axle L2 of the axis of reflection as reference axis L1 of concave mirror 50.Also picture that can set and display device 45, with respect to the inclination angle of reference axis L1, makes the axle vertical with the picture of display 45 (normal direction) become the direction of axle L2.Thus, when the picture of the display 45 that reflected by concave mirror 50 soon by inspection, described picture can be seen as being positioned at the picture vertical with reference axis L1.
By display 45 being configured near person under inspection's forehead, when sighting target light beam is penetrated to concave mirror 50, can reduce to the angle of incidence of concave mirror 50 incidents with from the angle of reflection of concave mirror 50 reflex times.In addition, in the present embodiment, person under inspection, by sighting target, present window (transparent panel 52) and to the inside of casing 5, observe while far use sighting target, by protecting panel 51 can make person under inspection's side can not see the display 45 as unnecessary structural member.Thus, the situation that person under inspection watches display 45 attentively disappears, and far away can minimizing when checking because seeing that structural member beyond sighting target causes, needs to get involved an adjusting that is subject to examine.
The top position of the central shaft C of the face that also can form at the inspection hatch 81 of measuring unit 8, utilizes supporting arm 20 that measuring unit 8 is remained on holding unit 10.Measuring unit 8 is being checked mobile between position and retreating position in the situation that, and measuring unit 8 can be centered by the link position O of supporting arm 20 and holding unit 10, in rotary moving on circular arc.That is, can, by making measuring unit 8 in rotary moving centered by the link position O of supporting arm, make measuring unit 8 with respect to reference axis L1(concave mirror 50) between inspection position and retreating position, move.In addition, also the structure that can make measuring unit 8 move up and down with respect to supporting arm 20 can be set, measuring unit 8 is moved up and down.Can certainly be moving up and down and the portion of keeping out of the way that constitutes in rotary moving.
In addition, ophthalmic unit of the present invention can be following the first ophthalmic unit～16 ophthalmic unit.The visual function that the first ophthalmic unit inspection is looked by a distant place for inspection eye, it comprises: sighting target display unit, there is the concave mirror on the reference axis that is configured in the frontal while being subject to inspection positive soon and the display that shows sighting target, the sighting target light beam penetrating from described display is reflected by described concave mirror, sighting target is presented to the inspection distance that optically a distant place for regulation is looked upper; Light path switching part, have can insert a described distant place depending on inspection light path in or the reflection part that departs from of the inspection light path of looking from a described distant place, by described reflection part is inserted a described distant place depending on inspection light path in or make described reflection part from a described distant place depending on inspection light path depart from, a described distant place depending on inspection light path and nearly side depending on inspection light path between switch, described nearly side depending on inspection light path by the reflection of described concave mirror, the sighting target beam direction from described display is not subject to inspection eye; And the first angle changing unit, far away with check and closely with inspection between change the picture of described display angle of inclination.
The second ophthalmic unit, in the first ophthalmic unit, described light path switching part is by being subject to insert described reflection part between inspection eye and described concave mirror, be switched to from the described sighting target light beam of described display by described reflection part reflection after the guiding inspection light path that looked by the nearly side of inspection eye, by described reflection part is departed between inspection eye and described concave mirror from being subject to, be switched to described sighting target light beam from described display by described concave mirror reflection after the guiding inspection light path that looked by a distant place for inspection eye.
The 3rd ophthalmic unit, in the second ophthalmic unit, when described the first angle changing unit is switched in the inspection light path of looking to described nearly side, so that the angle of inclination that the consistent mode of direction of the axle after by described reflection part reflection changes the picture of described display with respect to the normal direction of the picture of described display and described reference axis, when the inspection light path of looking to a described distant place is switched, so that the angle of inclination that the consistent mode of direction of the axle after by described concave mirror reflection changes the picture of described display with respect to the normal direction of described display picture and described reference axis.
The 4th ophthalmic unit, is in the second ophthalmic unit, also comprises: eye ametropia force measuring unit, this eye ametropia force measuring unit has pair of right and left lens chamber unit, described pair of right and left lens chamber unit optical element handover configurations in inspection hatch; And holding unit, keep described sighting target display unit, and so that the mode of the position that it is equal height that described inspection hatch is positioned at described reference axis keeps described eye ametropia force measuring unit.
The 5th ophthalmic unit, in the 3rd ophthalmic unit, described light path switching part also has the second angle changing unit, the angle of inclination of described the second angle changing unit for changing described reflection part, described light path switching part is being inserted into described reflection part under the state being subject between inspection eye and described concave mirror, described reflection part is moved on reference axis, and the angle of inclination that described the second angle changing unit changes described reflection part, change thus described nearly side depending on inspection light path on the nearly side inspection distance of looking, described the first angle changing unit is so that the angle of inclination that the consistent mode of direction of the axle after by described reflection part reflection changes the picture of described display with respect to the normal direction of the picture of described display and described reference axis.
The 6th ophthalmic unit, in the first ophthalmic unit, described sighting target display unit is the inclined light shaft configuration with respect to described concave mirror the normal direction of the picture with respect to described display, makes the optical axis deviation incident with respect to described concave mirror from the described sighting target light beam of described display.
The 7th ophthalmic unit comprises: casing, and concave mirror has been taken in inside, and described concave mirror is configured in the reference axis of setting for being subject to inspection to be presented on soon the sighting target on frontal; Display, shows sighting target, in the exterior arrangement of described casing outside described reference axis; And transparent panel, on described reference axis, be disposed at the face of the front side of described casing, make to see through from the sighting target light beam of described display, and the sighting target light beam being reflected by described concave mirror is seen through again, outside described casing, penetrate, the mode that described transparent panel tilts with respect to described reference axis with the normal direction of the face of the front side of described transparent panel configures, and makes by the reflected light of the described sighting target light beam of the face of the front side of described transparent panel reflection towards the direction from departed from by inspection eye.
The 8th ophthalmic unit, in the 7th ophthalmic unit, described casing has curtain-shaped cover member, described curtain-shaped cover member is in the front face side of described concave mirror, be configured in described transparent panel around, the described transparent panel being surrounded by described curtain-shaped cover member forms and presents window, described in present window for being subject to inspection eye to observe sighting target to box house.
The 9th ophthalmic unit, in the 7th ophthalmic unit, also comprise eye ametropia force measuring unit, described eye ametropia force measuring unit has pair of right and left lens chamber unit, described pair of right and left lens chamber unit is optical element handover configurations in inspection hatch, and described eye ametropia force measuring unit is so that described inspection hatch is positioned at the mode of the height and position of described reference axis configures.
The tenth ophthalmic unit, in the 9th ophthalmic unit, comprise support, described support is can make described eye ametropia force measuring unit be subject to mobile mode between the inspection position at the moment of inspection eye and retreating position to support described eye ametropia force measuring unit, described support is arranged at sighting target display unit, and described sighting target display unit has described casing and described display.
The 11 ophthalmic unit, is in the tenth ophthalmic unit, comprises eye-examing stage and maintaining part, and described maintaining part keeps described sighting target display unit on described eye-examing stage, and described support is arranged at described sighting target display unit by described maintaining part.
The 12 ophthalmic unit, is in the 11 ophthalmic unit, comprising: the first holding member, remains on described casing from being positioned over described maintaining part, to check that the described eye ametropia force measuring unit of position leaves the position of predetermined distance; And second holding member, from described the first holding member, extend, from described casing, direction person under inspection side is extended, and for keeping described display, described support is connected with described the second holding member.
The 13 ophthalmic unit, is in the 12 ophthalmic unit, comprises the portion of moving up and down, described in the portion of moving up and down be installed on described support, described the second holding member, make described eye ametropia force measuring unit to than checking that position retreating position closer to the top moves.
The 14 ophthalmic unit, is in the 9th ophthalmic unit, and described display is configured in outside the angular field of view of the regulation while being examined inspection hatch described in eye fixation.
The 15 ophthalmic unit, in the 14 ophthalmic unit, described casing has the window of presenting, described present window be disposed at described concave mirror before, described cabinet configuration is at the frontal of described eye ametropia force measuring unit, described display be configured in the sighting target light beam that makes from described display from described casing outside by the described window that presents towards the position of described concave mirror.
The 16 ophthalmic unit, is in the 15 ophthalmic unit, and described display is configured in described eye ametropia force measuring unit around, from the described inspection eye side that is subject to, towards described concave mirror, penetrates sighting target light beam.

Claims (10)

1. an ophthalmic unit, is characterized in that,
Described ophthalmic unit comprises:
Casing, takes in the concave mirror being configured on reference axis in inside;
Display, shows sighting target, is configured in outside the described reference axis of described casing outside; And
Transparent panel is disposed at the face of the front side of described casing on described reference axis, and make to see through from the sighting target light beam of described display, and after making again to be seen through by the sighting target light beam after described concave mirror reflection, outside described casing, penetrate,
The mode that described transparent panel tilts with respect to described reference axis with the normal direction of the face of the front side of described transparent panel configures.
2. ophthalmic unit according to claim 1, is characterized in that,
Described casing has curtain-shaped cover member, and described curtain-shaped cover member is positioned at the front face side of described concave mirror and is configured in described transparent panel around,
The described transparent panel being surrounded by described curtain-shaped cover member comprises and presents window, described in present window for being subject to inspection eye to observe a sighting target for box house.
3. ophthalmic unit according to claim 1, is characterized in that,
Described ophthalmic unit also comprises eye ametropia force measuring unit,
Described eye ametropia force measuring unit has pair of right and left lens chamber unit,
Described lens chamber unit has inspection hatch and optical element, and described optical element handover configurations is in described inspection hatch,
Described eye ametropia force measuring unit is so that described inspection hatch is positioned at the mode of the height identical with described reference axis configures.
4. ophthalmic unit according to claim 3, is characterized in that,
Described ophthalmic unit comprises sighting target display unit, and described sighting target display unit has described casing and described display,
Described sighting target display unit comprises support, and described support is so that described eye ametropia force measuring unit can be as being subject to mobile mode between the inspection position of position at the moment of inspection eye and retreating position to support described eye ametropia force measuring unit.
5. ophthalmic unit according to claim 4, is characterized in that,
Described ophthalmic unit also comprises:
Eye-examing stage; And
Maintaining part keeps described sighting target display unit on described eye-examing stage,
Described support is arranged at described sighting target display unit by described maintaining part.
6. ophthalmic unit according to claim 5, is characterized in that,
Described maintaining part comprises:
The first holding member, remains on described casing from being positioned over, to check that the described eye ametropia force measuring unit of position leaves the position of predetermined distance; And
The second holding member, extends from described the first holding member, and from described casing, direction person under inspection side is extended, for keeping described display,
Described support is connected with described the second holding member.
7. ophthalmic unit according to claim 6, is characterized in that,
Described support comprises the portion of moving up and down, described in the portion of moving up and down be installed on described the second holding member, make described eye ametropia force measuring unit check position and move between the retreating position above described inspection position.
8. ophthalmic unit according to claim 3, is characterized in that,
Described display is configured in outside the scope at the regulation visual angle that is subject to inspection eye of watching described inspection hatch attentively.
9. ophthalmic unit according to claim 8, is characterized in that,
Described casing have be configured in described concave mirror above present window, and described cabinet configuration is at the frontal of described eye ametropia force measuring unit,
Described display is disposed at and makes from the sighting target light beam of described display from the outside of described casing by the described window that presents towards the position of described concave mirror.
10. ophthalmic unit according to claim 9, is characterized in that,
Described display is configured in described eye ametropia force measuring unit around, from described, is subject to concave mirror described in inspection eye side direction to penetrate sighting target light beam.
CN201310325034.3A 2012-07-31 2013-07-30 Ophthalmic unit Expired - Fee Related CN103565397B (en)

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JP2012170446A JP6079989B2 (en) 2012-07-31 2012-07-31 Optometry equipment
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104970764A (en) * 2014-04-08 2015-10-14 埃西勒国际通用光学公司 Corrective Eyeglasses And Method For Subjective Refraction By A Wearer Of Said Eyeglasses
CN110167422A (en) * 2017-06-15 2019-08-23 尼德克株式会社 Conscious style optometry equipment
CN111432727A (en) * 2017-09-13 2020-07-17 奥库洛吉卡公司 Eye tracking system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255027A (en) * 1990-12-22 1993-10-19 Oculus Optikgeraete Gmbh Eye testing device
JPH06197867A (en) * 1992-11-12 1994-07-19 Topcon Corp Eyesight table display device
JPH11104077A (en) * 1997-09-30 1999-04-20 Topcon Corp Visual function examination system
US5903335A (en) * 1996-06-28 1999-05-11 Kabushiki Kaisha Topcon Apparatus for displaying visual acuity chart with constant magnification
JP2002330929A (en) * 2002-05-13 2002-11-19 Topcon Corp Optotype presenting device
CN1498090A (en) * 2001-02-08 2004-05-19 ��ʽ�������տ� Contrast chart apparatus, contrast sensitivity measuring apparatus and contrust sensitivity measuring method
WO2008065812A1 (en) * 2006-11-27 2008-06-05 Nippon Seiki Co., Ltd. Head up display unit
KR20090034622A (en) * 2007-10-04 2009-04-08 주식회사 휴비츠 Optical proximity apparatus including led module
CN101422355A (en) * 2007-11-02 2009-05-06 株式会社尼德克 Visual target presenting device
CN201263675Y (en) * 2008-09-28 2009-07-01 上海彦科仪器有限公司 Inner read type projection optometry instrument
CN102196788A (en) * 2008-10-29 2011-09-21 松下电工株式会社 Target presentation device, image display system, and vehicle-mounted display device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3501499B2 (en) * 1994-04-30 2004-03-02 キヤノン株式会社 Optometrist
JP3510397B2 (en) * 1995-08-31 2004-03-29 株式会社ニデック Eye test
JP3953977B2 (en) * 2003-04-30 2007-08-08 株式会社ニデック Optometry equipment

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255027A (en) * 1990-12-22 1993-10-19 Oculus Optikgeraete Gmbh Eye testing device
JPH06197867A (en) * 1992-11-12 1994-07-19 Topcon Corp Eyesight table display device
US5903335A (en) * 1996-06-28 1999-05-11 Kabushiki Kaisha Topcon Apparatus for displaying visual acuity chart with constant magnification
JPH11104077A (en) * 1997-09-30 1999-04-20 Topcon Corp Visual function examination system
CN1498090A (en) * 2001-02-08 2004-05-19 ��ʽ�������տ� Contrast chart apparatus, contrast sensitivity measuring apparatus and contrust sensitivity measuring method
JP2002330929A (en) * 2002-05-13 2002-11-19 Topcon Corp Optotype presenting device
WO2008065812A1 (en) * 2006-11-27 2008-06-05 Nippon Seiki Co., Ltd. Head up display unit
KR20090034622A (en) * 2007-10-04 2009-04-08 주식회사 휴비츠 Optical proximity apparatus including led module
CN101422355A (en) * 2007-11-02 2009-05-06 株式会社尼德克 Visual target presenting device
CN201263675Y (en) * 2008-09-28 2009-07-01 上海彦科仪器有限公司 Inner read type projection optometry instrument
CN102196788A (en) * 2008-10-29 2011-09-21 松下电工株式会社 Target presentation device, image display system, and vehicle-mounted display device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104970764A (en) * 2014-04-08 2015-10-14 埃西勒国际通用光学公司 Corrective Eyeglasses And Method For Subjective Refraction By A Wearer Of Said Eyeglasses
CN110167422A (en) * 2017-06-15 2019-08-23 尼德克株式会社 Conscious style optometry equipment
CN110167422B (en) * 2017-06-15 2020-05-19 尼德克株式会社 Self-sensing optometry device
CN111616674A (en) * 2017-06-15 2020-09-04 尼德克株式会社 Self-sensing optometry device
US11471043B2 (en) 2017-06-15 2022-10-18 Nidek Co., Ltd. Subjective optometry apparatus
CN111616674B (en) * 2017-06-15 2024-03-08 尼德克株式会社 Subjective refraction device
CN111432727A (en) * 2017-09-13 2020-07-17 奥库洛吉卡公司 Eye tracking system
CN111432727B (en) * 2017-09-13 2022-02-18 奥库洛吉卡公司 Eye tracking system
AU2018334150B2 (en) * 2017-09-13 2023-03-30 Oculogica Inc. Eye tracking system
AU2018334150C1 (en) * 2017-09-13 2023-05-11 Oculogica Inc. Eye tracking system

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