CN101374189B - Scanning apparatus with different resolutions - Google Patents
Scanning apparatus with different resolutions Download PDFInfo
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- CN101374189B CN101374189B CN2007101417604A CN200710141760A CN101374189B CN 101374189 B CN101374189 B CN 101374189B CN 2007101417604 A CN2007101417604 A CN 2007101417604A CN 200710141760 A CN200710141760 A CN 200710141760A CN 101374189 B CN101374189 B CN 101374189B
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- sensing element
- scanning means
- camera lens
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- light beam
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Abstract
The invention relates to a scanning device with different resolutions. The scanning device comprises a housing, an optical machine, a reflection module, a first lens, a second lens, a first sensing element, a second sensing element and a main reflector, wherein the first lens is matched with the first sensing element to scan a file of a first size at a first resolution; the second lens is matched with the second sensing element to scan a file of a second size at a second resolution; and the main reflector is arranged between the first sensing element and the second sensing element to ensure that the light beam can be received by the second sensing element. The scanning device can solve the problem of poor accuracy and abrasion of parts by obviating the engagement of gear parts, and can provide more than two resolutions by adding the number of the lenses and the sensing elements.
Description
Technical field
The present invention relates to a kind of scanning means, relate in particular to a kind of by the scanning means that many group photo-sensitive cells and camera lens have different resolution is set.
Background technology
General scanning means has single sensing element and single lens (Lens), and sensing element and camera lens are in order to the image of acquisition file, according to the resolution that sensing element and camera lens can make scanning means have, this scanning means only can use this resolution to scan the scanning effect that just can reach preferable.But when the user must be scanned the file data of different resolution, then must use scanning means to scan with another resolution.That is to say that sensing element and camera lens only can be in order to scan A 4 size files, if want scan A 3 size files, another that then must use can produce different resolution organizes sensing element and camera lens scans.For instance, if the scanning means of being responsible for scan A 3 can reach the resolution of 1600dpi, be used for scan A 4 size files and this scanning result is 1600dpi with this scanning means, though finished scanning, but its resolution too low scanning resolution of A4 size (general can reach 2400dpi) can't satisfy user's demand.Otherwise, be used for scan A 3 size files with the scanning means of being responsible for scan A 4, except the scanning means of scan A 4 can't be put into A3 size file, also because the width (297mm) of A3 size file is too wide, relative sensing element also must widelyer just can scan A3 size file, make wideer sensing element can't put into the scanning means of scan A 4, the scanning means of therefore being responsible for scan A 4 can't be used for the file of scan A 3 sizes.From the above, this kind has the scanning means quite inconvenience for the user of single resolution, therefore developed a kind of scanning means with different resolution on the market.
The TaiWan, China patent announcement proposes a kind of scanning means with different resolution No. 00488143, sees also Fig. 1, and it is the part-structure schematic diagram of known scanning means.In known scanning means, be provided with first rotating disk 1, second rotating disk 2, axostylus axostyle 3, drive link 4 and motor 5, wherein be provided with camera lens 11a, 11b, 11c and the 11d of a plurality of different focal and annular arrangement in first rotating disk 1 on first rotating disk 1, as shown in Figure 2; Be provided with sensing element 21a, 21b, 21c and the 21d of a plurality of different resolutions and annular arrangement in second rotating disk 2 on second rotating disk 2, as shown in Figure 3.
Please consult Fig. 1 once again, the center that axostylus axostyle 3 passes first rotating disk 1 and second rotating disk 2 can be rotated first rotating disk 1 and second rotating disk 2, and drive link 4 passes the first unilateral bearing 41a and the second unilateral bearing 41b, the first unilateral bearing 41a and the second unilateral bearing 41b can be rotated and respectively with the first tooth portion 12 of first rotating disk 1 and second rotating disk, 2 outer rims and 22 engagements of the second tooth portion.One end of power transmission shaft 4 is provided with a gear 42, with drive 51 engagements that are arranged on the motor 5, after the CD-ROM drive motor 5, can make first swiveling wheel 1 and 2 rotations of second swiveling wheel through above-mentioned connection relationship, wherein the direction of rotation of first swiveling wheel 1 and second swiveling wheel 2 is opposite, causes the opposite crucial part of described both direction of rotation to be that the direction of rotation of the first unilateral bearing 41a and the second unilateral bearing 41b is for opposite.
And drive link 4 direction of rotation have only one, but thereon the first unilateral bearing 41a and the past opposite direction rotation of the second unilateral bearing 41b are set, and see also Fig. 4, and it is the structural representation of the unilateral bearing of known scanning means.Among Fig. 4, unilateral bearing comprises outer tube 81, bearing tooth portion 811, rolling element 82 and interior pipe 83.Have a plurality of rolling elements 82 between its middle external tube 81 and the interior pipe 83, be provided with a plurality of burs 812 at the inwall place of outer tube 81, the position of each bur 812 is just between two rolling elements 82, if when driving the bearing tooth portion 811 of outer tube 81 outer rims with counter clockwise direction, roller body 82 can have no the ground of obstruction along with the surface of bur 812 and roll, cause can't drive in pipe 83 rotate in the counterclockwise direction, at this moment, outer tube 81 is with rolling counterclockwise, but interior pipe 83 is in the idling conditions that does not rotate.Otherwise if in a clockwise direction when driving the bearing tooth portion 811 of outer tube 81 outer rims, rolling element 82 can be stopped by the protruding wall of bur 812 trailing edges, thereby pipe 83 rotates along clockwise direction in can driving, to form the state that outer tube 81 and interior pipe 83 are driven to rotate simultaneously.Among Fig. 1, the first unilateral bearing 41a and the second unilateral bearing 41b are same unilateral bearing, just the first unilateral bearing 41a oppositely is arranged on the drive link 4, same unilateral bearing becomes the second unilateral bearing 41b immediately, when thereby CD-ROM drive motor 5 drove 1 rotation of first rotating disk in a clockwise direction, second rotating disk 2 can present the state that does not rotate; And thereby when driving 2 rotations of second rotating disk with counter clockwise direction CD-ROM drive motor 5, first rotating disk 1 can present the state that does not rotate, and that is to say, no matter along which direction of rotation CD-ROM drive motor 5, all only can drive a rotating disk and rotate.
Please consult Fig. 1 once again, by CD-ROM drive motor 5, first rotating disk 1 begins to rotate the camera lens 11a that makes on first rotating disk 1 and moves on the optical path of scanning means, and a plurality of camera lens 11a, 11b, 11c and 11d on first rotating disk 1 rotation by first rotating disk 1 can be arbitrarily with second rotating disk 2 on sensing element 21a collocation obtain different resolution.In like manner, second rotating disk 2 begins to rotate the sensing element 21a that makes on second rotating disk 2 and moves on the optical path of scanning means, and a plurality of sensing element 21a on second rotating disk 2,21b, 21c and the 21d rotation by second rotating disk 2 can be arbitrarily with first rotating disk 1 on camera lens 11a collocation obtain different resolution, if motor 5 is rotated clockwise and counterclockwise, allow a plurality of camera lens 11a on first rotating disk 1,11b, a plurality of sensing element 21a on 11c and 11d and second rotating disk 2,21b, 21c and 21d collocation mutually just can have the resolution of more kinds of combinations.
Though aforementioned scanning means with different resolution can improve the shortcoming of the most original single resolution scan device, but known scanning means with different resolution is easy to generate error in use, its reason is: first, axostylus axostyle and power transmission shaft may bump in the process of transporting or owing to service life, the concentricity of axostylus axostyle and power transmission shaft produces deviation; The second, rotating disk and unilateral bearing link together with tooth portion engagement and the rotation of unilateral bearing control rotating disk, and the engagement between tooth portion is easy to take place error; The 3rd, camera lens and sensing element on the rotating disk are moved simultaneously, thereby make camera lens and sensing element in alignment with producing a resolution on the optical path, and the accuracy of the need of work certain degree of this aligning, even be adjusted to degree quite accurately, after one period service time, the wearing and tearing of tooth portion also can make accuracy reduce, camera lens aimed at sensing element and both are positioned at simultaneously and be still quite difficulty on the optical path, moreover, rotating disk and be arranged between wherein camera lens and have the gap error that is provided with, and rotating disk and be arranged between wherein sensing element and also have the gap error that is provided with, these gap errors that are provided with more make known scanning means with different resolution increase many secret worries.
Therefore, need scanning means a kind of improvement, that have different resolution.
Summary of the invention
The object of the present invention is to provide a kind of scanning means, can overcome the shortcoming of aforementioned known scanning means with different resolution.
The invention provides a kind of scanning means, in order to the file that scans a first size and the file of one second size, this scanning means comprises: a housing; One ray machine is arranged in this housing, comprises a fluorescent tube and one first speculum, and this fluorescent tube is in order to produce a light beam; One reflecting module is arranged in this housing, and this reflecting module comprises one second speculum and one the 3rd speculum; One first camera lens and one second camera lens all are arranged at this housing bottom, and wherein the focal length of this first camera lens is different with the focal length of this second camera lens; One first sensing element is arranged at this housing bottom, thereby reads the image of this first size file in order to the light beam that this first camera lens is passed in reception; One second sensing element is arranged at this housing bottom, thereby reads the image of this second size file in order to the light beam that this second camera lens is passed in reception; Wherein this first sensing element and this second sensing element have different resolution; And a principal reflection mirror, be arranged between this first sensing element and this second sensing element.
Preferably, this scanning means can also comprise a transmission mechanism, uses so that this ray machine and this reflecting module move in this scanning means.
Preferably, first sensing element of this scanning means and second sensing element are charge coupled devices.
Preferably, the translational speed of the ray machine of this scanning means is Vl, and the translational speed of reflecting module is Vr, and Vl=2Vr.
Scanning means of the present invention is compared with known technology, does not need to use the engagement between the tooth portion, can avoid the problem of accuracy deficiency and part abrasion.In addition, the present invention is not limited to two kinds of resolution, can provide more kinds of resolution by the quantity setting that increases camera lens and sensing element.
Description of drawings
Fig. 1 is the part-structure schematic diagram of known scanning means.
Fig. 2 is the structural representation of first rotating disk of known scanning means.
Fig. 3 is the structural representation of second rotating disk of known scanning means.
Fig. 4 is the structural representation of the unilateral bearing of known scanning means.
Fig. 5 is the structural representation of the scanning means of a preferred embodiment of the present invention.
Fig. 6 is that the light beam of a preferred embodiment of the present invention is in the schematic diagram in the path of scanning means.
Fig. 7 is ray machine of a preferred embodiment of the present invention and the structural representation that reflecting module moves.
Fig. 8 is the position view that is provided with of first sensing element of a preferred embodiment of the present invention and second sensing element.
Wherein, description of reference numerals is as follows:
1,2 rotating disk 11a, 11b, 11c, 11d camera lens
12,22 21a of tooth portion, 21b, 21c, 21d sensing element
3 axostylus axostyles, 4 power transmission shafts
41a, 41b unilateral bearing 42 gears
5 motors, 51 drives
81 outer tubes, 811 bearing tooth portions
812 burs, 82 rolling elements
101 housings, 102 ray machines
1021 fluorescent tubes, 1022,1031,1032 speculums
103 reflecting module, 104,105 camera lenses
106,107 sensing elements, 108 principal reflection mirrors
109 transmission mechanism G glass platform
L light beam P file
Embodiment
In view of the shortcoming of known technology, the present invention proposes a kind of scanning means with different resolution, sees also Fig. 5, and it is the structural representation of the scanning means of a preferred embodiment of the present invention.Comprise housing 101, ray machine 102, reflecting module 103, first camera lens 104, second camera lens 105, first sensing element 106, second sensing element 107, principal reflection mirror 108 and transmission mechanism 109 in the scanning means 100, wherein first camera lens 104 and second camera lens 105 have different focal lengths, and in the present embodiment, first sensing element 104 and second sensing element 105 be charge coupled device (Charge CoupledDevice, CCD).
Among Fig. 5, ray machine 102 is arranged in the housing 101, and ray machine 102 comprises the fluorescent tube 1021 and first speculum 1022, and wherein fluorescent tube 1021 is in order to outgoing beam, and first speculum 1022 is in order to reflect this light beam and this light beam is advanced to the direction of second speculum 1031.103 of reflecting module comprise second speculum 1031 and the 3rd speculum 1032, and second speculum 1031 and the 3rd speculum 1032 make light beam advance to sensing element in order to folded light beam.
In addition, be provided with a principal reflection mirror 108 between first sensing element 106 and second sensing element 107, use so that light beam can be received by second sensing element 107.And the transmission mechanisms 109 that are arranged in the housing 101 comprise two drive links, in order to connect ray machine 102 and reflecting module 103 and make ray machine 102 and reflecting module 103 moves in scanning means 100.
See also Fig. 6, it is the path schematic diagram (in figure only represent path light beam by file reflection after) of light beam in scanning means of a preferred embodiment of the present invention.When scanning means 100 will scan one when being positioned over the file P of glass platform G, fluorescent tube 1021 on the ray machine 102 sends light beam L, the glass platform G that this light beam L passes scanning means 100 is mapped on the file P, small part light beam L can be absorbed by the subregion of file P, and most light beam L can be reflected, wherein each color beam reflected is strong and weak different, therefore can analyze color and then make scanning means 100 carry out chromoscan according to the power of folded light beam L.Then reflected beams L advances to reflecting module 103 through the reflection of first speculum 1022, light beam L is through second speculum 1031 in the reflecting module 103 and the reflection of the 3rd speculum 1032, penetrate first camera lens 104 again and received by first sensing element 106, first sensing element 106 converts the light beam L that receives to analog signal, again analog signal is delivered to analog/digital converter (Analogy/Digital Converter), original analog signal is converted to the analyzable digital signal of computer, and digital signal just can be exchanged into the employed image file of general user through the operational analysis of scanning software again.
Please consult Fig. 5 once again, thereby on whole part file, file can intactly be scanned for light beam can be videoed, ray machine 102 and reflecting module 103 can be moved to make sensing element receive the folded light beam of complete file in scanning means 100 thereby therefore a transmission mechanism 109 need be set.Among Fig. 5, ray machine 102 and reflecting module 103 are positioned at an end of scanning means 100, when the scanning beginning, ray machine 102 and reflecting module 103 are driven by transmission mechanism 109 simultaneously and begin to advance, wherein the translational speed of ray machine 102 is Vl, the translational speed of reflecting module 103 is Vr, and the translational speed of ray machine 102 is the twice of reflecting module 103, i.e. Vl=2Vr.Because ray machine 102 must be mapped in fluorescent tube 1021 emitted light beams on the whole part file, so ray machine 102 must have the speed faster than reflecting module 103.
See also Fig. 7, the structural representation that it moves for the ray machine of a preferred embodiment of the present invention and reflecting module.After ray machine 102 was mapped across complete file with light beam, ray machine 102 had moved to the other end of scanning means 100, and reflecting module 103 approximately is positioned at the centre of scanning means 100, as shown in Figure 7.
See also Fig. 8, it is the position view that is provided with of first sensing element of a preferred embodiment of the present invention and second sensing element.Wherein first sensing element is in order to receive the image of first size file, second sensing element is in order to receive the image of the second size file, in a preferred embodiment, the first size file is the file of an A3 size and the second size file is the file of an A4 size.The setting principle of first sensing element and second sensing element has 2 points: to be light beam must equal the light path of file to second sensing element by file to the light path of first sensing element (light path is the distance that expression light is advanced from the scanned object to the transducer) to first principle; Second principle is the width that the first scanning width W1 of first sensing element of the responsible A3 of reception size image must equal A3 size file, and the second scanning width W2 that is responsible for second sensing element of reception A4 size image must equal the width of A4 size file, as shown in Figure 8.
Scanning means of the present invention is not limited in the file of scan A 3 and two kinds of sizes of A4, and under the prerequisite of above 2 setting principles, this device is also applicable to the scanning of other size file.
Scanning means of the present invention is compared with known technology, does not need to use the engagement between the tooth portion, so the present invention can avoid the problem of accuracy deficiency and part abrasion.In addition, the present invention is not limited to two kinds of resolution certainly, by the quantity that increases camera lens and sensing element the resolution that can provide more kinds of is set.
The above is preferred embodiment of the present invention only, is not in order to limiting scope of the present invention, and therefore every other do not break away from the equivalence of being finished under the design situation disclosed in this invention and change or revise, and all should be covered by in the scope of claims of the present invention.
Claims (4)
1. scanning means, in order to the file that scans a first size and the file of one second size, this scanning means comprises:
One housing;
One ray machine is arranged in this housing, comprises a fluorescent tube and one first speculum, and this fluorescent tube is in order to produce a light beam;
One reflecting module is arranged in this housing, and this reflecting module comprises one second speculum and one the 3rd speculum;
One first camera lens and one second camera lens all are arranged at this housing bottom, and wherein the focal length of this first camera lens is different with the focal length of this second camera lens;
One first sensing element is arranged at this housing bottom, thereby reads the image of this first size file in order to the light beam that this first camera lens is passed in reception;
One second sensing element is arranged at this housing bottom, thereby reads the image of this second size file in order to the light beam that this second camera lens is passed in reception; Wherein this first sensing element and this second sensing element have different resolution; And
One principal reflection mirror is arranged between this first sensing element and this second sensing element.
2. scanning means as claimed in claim 1 also comprises a transmission mechanism, uses so that this ray machine and this reflecting module move in this scanning means.
3. scanning means as claimed in claim 1, wherein this first sensing element and second sensing element are charge coupled devices.
4. scanning means as claimed in claim 1, wherein the translational speed of this ray machine is V1, and the translational speed of this reflecting module is Vr, and V1=2Vr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101417604A CN101374189B (en) | 2007-08-21 | 2007-08-21 | Scanning apparatus with different resolutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101417604A CN101374189B (en) | 2007-08-21 | 2007-08-21 | Scanning apparatus with different resolutions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101374189A CN101374189A (en) | 2009-02-25 |
| CN101374189B true CN101374189B (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101417604A Expired - Fee Related CN101374189B (en) | 2007-08-21 | 2007-08-21 | Scanning apparatus with different resolutions |
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| Country | Link |
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| CN (1) | CN101374189B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5535040A (en) * | 1993-01-12 | 1996-07-09 | Ohtsuka; Tadao | Lens changeable image scanner and lens position control device in the same |
| US5552939A (en) * | 1995-07-07 | 1996-09-03 | Umax Data Systems Inc. | Multi-lens changing mechanism for use in optical scanners |
| CN2367037Y (en) * | 1999-02-01 | 2000-03-01 | 明碁电脑股份有限公司 | Scanning arrangement having function of exchanging camera lens |
| CN1433214A (en) * | 2002-01-17 | 2003-07-30 | 旭丽股份有限公司 | Scanning method and device with raised resolution |
-
2007
- 2007-08-21 CN CN2007101417604A patent/CN101374189B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5535040A (en) * | 1993-01-12 | 1996-07-09 | Ohtsuka; Tadao | Lens changeable image scanner and lens position control device in the same |
| US5552939A (en) * | 1995-07-07 | 1996-09-03 | Umax Data Systems Inc. | Multi-lens changing mechanism for use in optical scanners |
| CN2367037Y (en) * | 1999-02-01 | 2000-03-01 | 明碁电脑股份有限公司 | Scanning arrangement having function of exchanging camera lens |
| CN1433214A (en) * | 2002-01-17 | 2003-07-30 | 旭丽股份有限公司 | Scanning method and device with raised resolution |
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| Publication number | Publication date |
|---|---|
| CN101374189A (en) | 2009-02-25 |
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