CN105249931A - Multifocal condensing physiological sensing device - Google Patents
Multifocal condensing physiological sensing device Download PDFInfo
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- CN105249931A CN105249931A CN201510777247.9A CN201510777247A CN105249931A CN 105249931 A CN105249931 A CN 105249931A CN 201510777247 A CN201510777247 A CN 201510777247A CN 105249931 A CN105249931 A CN 105249931A
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Abstract
The invention discloses a multifocal condensing physiological sensing device, comprising at least one multifocal condenser, wherein the multifocal condenser comprises at least one first elliptical reflecting element; one end of the first elliptical reflecting element is provided with at least one second elliptical reflecting element; the first elliptical reflecting element comprises a first transparent plane which is provided with a first focal point; the second elliptical reflecting element comprises a second transparent plane which is provided with at least two second focal points; a first confocal point is formed in the junction between the first elliptical reflecting element and the second elliptical reflecting element; at least two light emitting elements are respectively arranged in the two second focal points, so that light sources are generated; the two light sources converge light to the first confocal point through the second elliptical reflecting element, and the light enters into a to-be-detected object, so that a to-be-detected light source is reflected to the first confocal point, and is emitted to a sensor through the first focal point by means of the reflection of the first elliptical reflecting element, therefore the physiological state is detected. The multifocal condensing physiological sensing device has the advantages that the condensation intensity can be improved, the light reception scope can be extended, and a light source with a plurality of wavelengths can be used simultaneously.
Description
Technical field
The present invention relates to a kind of physiology detection apparatus, refer to especially a kind of can the multifocal optically focused physiological sensing device of effective optically focused.
Background technology
Be showing improvement or progress day by day with science and technology, can the product development of physiology detection apparatus of body-worn rise gradually, as physiological sensing wrist-watch etc. in recent years.General existing technology adopts the mode of optical detection mostly, a light-emitting component is utilized to produce light source, by light source incidence to skin to be measured, the optical signal of sensing skin reflex, analyze light sources with different wavelengths by the intensity variation after physiological tissue, the physiological values such as heart rate, blood oxygen and blood glucose are calculated by variable signal, but when measuring, if the insufficient strength of light source, light source then cannot the transdermal degree of depth and biological tissue, and be vulnerable to the influence of noise of surround lighting, physiological data accurately cannot be measured.
Therefore, for improving the light gathering efficiency of light, generally can set up a converging optical element to improve the intensity of light, with the signal to noise ratio of promotion signal (S/N), the collective optics that existing product carries, as Fresnel lens (FresnelLens) optically focused and receive optical range less, efficiency cannot effectively be promoted.In addition, when measuring heart rate, blood oxygen and blood glucose, the light source of multiple different wave length need be used, if only use the optical element optically focused of a focus, signal analysis cannot be carried out for each wavelength light source simultaneously, also easily cause the accuracy measuring physiological status not good.
For US patent number: the front case of US5995856, as shown in Figure 1, it discloses and there is a upper shell 90 and be positioned at lower house 92 below upper shell 90, wherein upper shell 90 has upper recess surface mirror 902 and a biosensor 904, lower house 92 has a concave surface mirror 922 and a light-emitting component 924, light-emitting component 924 sends light source to concave surface mirror 922, on optically focused back reflection to skin 94 to be measured, then reflex to upper recess surface mirror 902, detect physiological status to be dropped in biosensor 904 by light.But front case the reflector curvature of not mentioned adjustable concave mirror, to improve spotlight effect.In addition, at least need to utilize the light source of 2-3 kind different wave length to carry out processing and sensing owing to measuring multi-signal, and the structure of front case also cannot use the light source of multi-wavelength to detect different physiological signals simultaneously, therefore front case cannot reach the object simultaneously measuring the physiological signals such as heart rate, blood oxygen and blood glucose.
In view of this, the present invention, then for above-mentioned the deficiencies in the prior art, proposes a kind of multifocal optically focused physiological sensing device, effectively to overcome above-mentioned multiple problem.
Summary of the invention
Main purpose of the present invention is to provide a kind of multifocal optically focused physiological sensing device, it can effectively improve optically focused intensity, and receipts optical range can be expanded, and due to its have multiple enter optical focus, the light source of multiple wavelength can be used simultaneously, to utilize the light source of different wave length to converge on skin to be measured simultaneously, percutaneous intensity variation detects multiple physiological signal.
Another object of the present invention is to provide a kind of multifocal optically focused physiological sensing device, its structure is simple, production efficiency can be made effectively to improve, and light gathering efficiency can be made significantly to promote.
In order to achieve the above object, the invention provides a kind of multifocal optically focused physiological sensing device, comprise at least two light-emitting components, produce a light source respectively; At least one multifocal condenser, it has at least one first elliptical reflecting part and at least one second elliptical reflecting part, second elliptical reflecting part is positioned at one end of the first elliptical reflecting part, wherein the first elliptical reflecting part has one first transparent flat, it has the first focus, first focus is placed a sensor, the intersection of the first elliptical reflecting part and the second elliptical reflecting part has one first confocal point, placement one determinand on first confocal point, second elliptical reflecting part has one second transparent flat, the second transparent flat has at least two the second focuses; Two the second focuses place light-emitting component respectively, to produce light source, light source is made to converge to the first confocal point through the second elliptical reflecting part and be incident to a determinand, determinand reflects light source to be measured and returns the first confocal point, penetrated to sensor by the first focus, to detect physiological status after the first elliptical reflecting part reflection.
In one embodiment of this invention, this second elliptical reflecting part in this multifocal condenser also comprises two the first elliptical reflecting portions, and each this one end, the first elliptical reflecting portion has one second focus respectively.
In one embodiment of this invention, this first elliptical reflecting part and this second elliptical reflecting part are one of the forming.
In one embodiment of this invention, this determinand is positioned on this first confocal point.
In one embodiment of this invention, this second elliptical reflecting part is inclined upwardly in this first elliptical reflecting part.
In one embodiment of this invention, the scope at this second elliptical reflecting part angle of inclination is 1 degree to 15 degree.
In one embodiment of this invention, this the second elliptical reflecting part also comprises two the first elliptical reflecting portions and one second elliptical reflecting portion, each this first elliptical reflecting portion has this second transparent flat, it has this second focus, this the second elliptical reflecting portion has one the 3rd transparent flat, it has one second confocal point, this the second elliptical reflecting portion is positioned at one end of this first elliptical reflecting part, and these two the first elliptical reflecting portions are oppositely arranged in this second elliptical reflecting portion, this second transparent flat is connected with the 3rd transparent flat, these two second focuses receive after this light source enters this first elliptical reflecting portion respectively, by this second confocal this light source of point focusing back reflection to this first confocal injection of this first elliptical reflecting part, to be projeced on this determinand.
In one embodiment of this invention, this first elliptical reflecting portion is identical with the second elliptical reflecting portion curved surface.
In one embodiment of this invention, this light-emitting component is arranged in these two second focuses in this second elliptical reflecting part respectively.
In one embodiment of this invention, this light-emitting component is red light-emitting element, green luminescence element or infrared light light-emitting component.
In one embodiment of this invention, this light-emitting component is light emitting diode, surface-mounting LED or laser diode.
In one embodiment of this invention, this multifocal optically focused physiological sensing device also comprises a housing, and this housing this light-emitting component coated, this multifocal condenser and this sensor also expose this first confocal point.
In one embodiment of this invention, the wavelength that this infrared light light-emitting component sends is 1000nm ~ 1700nm, and the wavelength that this green luminescence element sends is 500nm ~ 560nm, and the wavelength that this red light-emitting element sends is 600nm ~ 700nm or 900nm ~ 1000nm.
In one embodiment of this invention, this infrared light light-emitting component is in order to measure blood glucose, and this green luminescence element is in order to measure heart rate, and this red light-emitting element is in order to measure blood oxygen.
As can be seen here, multifocal optically focused physiological sensing device structure provided by the invention is simple, production efficiency can be made effectively to improve, and can effectively improve optically focused intensity, and can expand receive optical range, and due to its have multiple enter optical focus, the light source of multiple wavelength can be used simultaneously, to utilize the light source of different wave length to converge on skin to be measured simultaneously, percutaneous intensity variation detects multiple physiological signal.
Illustrate in detail below by specific embodiment, when the effect being easier to understand object of the present invention, technology contents, feature and reach.
Accompanying drawing explanation
Fig. 1 is existing physiology detection apparatus schematic diagram;
Fig. 2 is the axonometric chart of first embodiment of the invention;
Fig. 3 is the coated shell schematic diagram of first embodiment of the invention;
Fig. 4 is the coated shell side perspective view of first embodiment of the invention;
Fig. 5 is the light refraction schematic diagram of first embodiment of the invention;
Fig. 6 is the axonometric chart of second embodiment of the invention;
Fig. 7 is the coated shell side perspective view of second embodiment of the invention;
Fig. 8 is the light refraction schematic diagram of second embodiment of the invention.
Description of reference numerals: 1-multifocal optically focused physiological sensing device; 10-light-emitting component; 20-multifocal condenser; 22-first elliptical reflecting part; 220-first transparent flat; 224-first focus; 24-second elliptical reflecting part; 240-second transparent flat; 242-second focus; 242 '-the second focus; 246-first elliptical reflecting portion; 246 '-the first elliptical reflecting portion; The confocal point of 25-first; 28-determinand; 30-sensor; 40-housing; 50-multifocal condenser; 52-first elliptical reflecting part; 520-first transparent flat; 524-first focus; 54-second elliptical reflecting part; 540-second transparent flat; 540 '-the second transparent flat; 542-second focus; 542 '-the second focus; 546-first elliptical reflecting portion; 546 '-the first elliptical reflecting portion; 548-second elliptical reflecting portion; 545-the 3rd transparent flat; The confocal point of 55-first; The confocal point of 56-second; 90-upper shell; 902-upper recess surface mirror; 904-biosensor; 92-lower house; 922-concave surface mirror; 924-light-emitting component; 94-skin to be measured.
Detailed description of the invention
As shown in Figure 2, multifocal optically focused physiological sensing device 1 comprises at least two light-emitting components 10, produces a light source respectively; At least one multifocal condenser 20, multifocal condenser 20 has at least the first elliptical reflecting part 22 and at least one second elliptical reflecting part 24, second elliptical reflecting part 24 is arranged at one end of the first elliptical reflecting part 22, second elliptical reflecting part 24 is inclined upwardly in the first elliptical reflecting part 22, angle of inclination is about 1 degree to 15 degree, optimum tilt angle is 3 degree to 5 degree, and the first elliptical reflecting part 22 and the second elliptical reflecting part 24 are one of the forming.Wherein the first elliptical reflecting part 22 lower surface has one first transparent flat 220, first elliptical reflecting part 22 is positioned in the first planar transparent plane 220, the intersection it with one first focus 224, first elliptical reflecting part 22 and the second elliptical reflecting part 24 has one first confocal point 25.The second elliptical reflecting part 24 in the present embodiment has two the first elliptical reflecting portions 246,246 ', first elliptical reflecting portion 246,246 ' lower surface has one second transparent flat 240, wherein the first elliptical reflecting portion 246 is positioned at the second planar transparent plane 240 place and has one second focus 242, another the first elliptical reflecting portion 246 ' is upper and be positioned at the second planar transparent plane 240 place and have one second focus 242 '.Two the second focuses 242,242 ' are also respectively equipped with light-emitting component 10, and two light-emitting components 10 produce a light source respectively, make light source can enter the second elliptical reflecting part 24 by the second focus 242,242 '; At least one sensor 30, sensor 30 can be light sensitive diode (Photodiode, PD), phototransistor (PhotoTransistor), photosensitive coupling element (Charge-coupledDevice, CCD), sensor 30 is placed in the first focus 224 of the first elliptical reflecting part 22 of multifocal condenser 20.
In addition, as shown in Figure 3 and Figure 4, the present invention also can have a housing 40, the coated light-emitting component of housing 40 10, multifocal condenser 20 and sensor 30 also expose the first confocal point 25, for determinand 28, skin etc. as finger, wrist to be positioned on the first elliptical reflecting part 22 and to be positioned on the first confocal point 25 that the second elliptical reflecting part 24 has a common boundary, in order to detection.In addition, the both sides of housing 40 also can for arranging bandage (not shown), so that multifocal optically focused physiological sensing device 1 is tied up on hand, to measure the physiological signal at the skin place of user wrist, or multifocal optically focused physiological sensing device 1 can be arranged in vehicle steering, when driving driving, the skin of finger directly can touch the measurement point of multifocal optically focused physiological sensing device 1, with can detecting real-time physiological status when driving, when physiological status is not good, driver can be reminded rapidly.
As shown in Figures 2 to 5, during so that the structure using above-described embodiment to be described, the route map that light transmits, first when measuring physiological signal, must first by determinand 28, the first elliptical reflecting part 22 that finger as gauger is positioned over multifocal condenser 20 is positioned at the first confocal point 25 of the second elliptical reflecting part 24 intersection, then by the light source of two light-emitting components 10 generations, make light source respectively by two the second focuses 242, 242 ' enters the first elliptical reflecting portion 246, 246 ', to touch the first elliptical reflecting portion 246, the curved surface of 246 ', make source reflection and be incident on determinand 28 after converging the confocal point 25 of light to the first, determinand 28 can reflect light source to be measured through the first confocal point 25, light source to be measured is received through the first elliptical reflecting part 22 camber reflection by the first elliptical reflecting part 22, and be passed to sensor 30 by the first focus 224, go out the physiological parameter of user according to light source detection to be measured for sensor 30.Wherein above-mentioned luminescence unit 10 can be light emitting diode (LED), surface-mounting LED (SMDLED) or laser diode (LD), and can be infrared light light-emitting component, its wavelength sending light source is about 1000nm ~ 1700nm, to measure blood glucose, or green luminescence element, its wavelength sending light source is about 500nm ~ 560nm, to measure heart rate, or red light-emitting element, its wavelength sending light source is about 600nm ~ 700nm, or optical source wavelength is the HONGGUANG of 900nm ~ 1000nm, to measure blood oxygen, make the present invention by multiple light-emitting components 10 of different wave length, measure multiple physiological signal, and the demand of the physiological signal measured can be needed to change according to user, do not limited at this.
In addition to the above embodiments, the structure of multifocal optically focused physiological sensing device 1 provided by the invention also can be as shown in Figure 6, multifocal optically focused physiological sensing device 1 comprises at least one multifocal condenser 50, multifocal condenser 50 has at least the first elliptical reflecting part 52 and the second elliptical reflecting part 54, second elliptical reflecting part 54 is arranged at one end of the first elliptical reflecting part 52, and the second elliptical reflecting part 54 is inclined upwardly in the first elliptical reflecting part 52, the angle tilted is about 1 degree to 15 degree, optimum tilt angle is 3 degree to 5 degree, and the first elliptical reflecting part 52 and the second elliptical reflecting part 54 are one of the forming.First elliptical reflecting part 52 lower surface has one first transparent flat 520, first elliptical reflecting part 52 two ends and is positioned on the first transparent flat 520 and has one first focus 524.First elliptical reflecting part 52 has one first confocal point 55 with the second elliptical reflecting part 54 intersection, and the second elliptical reflecting part 54 in the present embodiment also comprises two the first elliptical reflecting portions 546, 546 ' and 1 second elliptical reflecting portion 548, first elliptical reflecting portion 546 and the second elliptical reflecting portion 548 are the ellipse of identical curved surface, and each first elliptical reflecting portion 546 has one second transparent flat 540, 540 ', second transparent flat 540, 540 ' two ends have one second focus 542 respectively, 542 ', second focus 542, 542 ' for arranging a light-emitting component 10 respectively, to produce light source respectively, make light source can by two the second focuses 542, 542 ' enters the second elliptical reflecting part 54.Second elliptical reflecting portion 548 is positioned at one end of the first elliptical reflecting part 52, and the second elliptical reflecting portion 548 lower surface has one the 3rd transparent flat the 545, three transparent flat 545 has one second confocal point 56.Wherein two the first elliptical reflecting portions 546,546 ' are oppositely arranged on the second elliptical reflecting part 548, and the second transparent flat 540,540 ' is connected with the 3rd transparent flat 545; At least one sensor 30, is arranged in the first focus 524 of the first elliptical reflecting part 52 of multifocal condenser 50.
As shown in Figures 6 and 7, the present invention also can have a housing 40, the coated light-emitting component of housing 40 10, multifocal condenser 50 and sensor 30 also expose the first confocal point 55, for determinand 28, skin etc. as finger, wrist to be positioned on the first elliptical reflecting part 52 and to be positioned on the first confocal point 55 of the second elliptical reflecting part 54 intersection, all the other are all identical with the first embodiment, therefore not repeated description.
As shown in Figure 6 to 8, during so that the structure using above-mentioned second embodiment to be described, the route map that light transmits, first when measuring physiological signal, must first by a determinand 28, the finger as gauger is positioned on the first confocal point 55 of multifocal condenser 50.After the light source of two light-emitting components 10 enters the first elliptical reflecting portion 546,546 ' by two the second focuses 542,542 ' respectively, contact surface reflection source after converging at the second confocal point 56, be passed to the confocal point 55 of the second elliptical reflecting portion 548 reflection source to the first to penetrate, to be incident on determinand 28, determinand 28 reflects light source to be measured again through the first confocal point 55, and be incident upon the curved surface of the first elliptical reflecting part 52, be passed to sensor 30 through the first focus 524 after reflection, detect light source to be measured to detect physiological parameter for sensor 30.Wherein above-mentioned light-emitting component 10 is all identical with the first embodiment, therefore not repeated description.
In sum, multifocal optically focused physiological sensing device structure provided by the invention is simple, production efficiency can be made effectively to improve, and can effectively improve optically focused intensity, and can expand receive optical range, and due to its have multiple enter optical focus, the light source of multiple wavelength can be used simultaneously, to utilize the light source of different wave length to converge on skin to be measured simultaneously, percutaneous intensity variation detects multiple physiological signal.
The foregoing is only preferred embodiment of the present invention, be not used for limiting scope of the invention process.Therefore namely all equalizations of doing according to the feature described in the claims in the present invention scope and spirit change or modify, and all should be included in protection scope of the present invention.
Claims (14)
1. a multifocal optically focused physiological sensing device, is characterized in that, comprising:
At least two light-emitting components, produce a light source respectively;
At least one multifocal condenser, it has at least one first elliptical reflecting part and at least one second elliptical reflecting part, this the second elliptical reflecting part is positioned at one end of this first elliptical reflecting part, this the first elliptical reflecting part has one first transparent flat, it has one first focus, this the second elliptical reflecting part has one second transparent flat, it have respectively at least two the second focuses, and this first elliptical reflecting part and this second elliptical reflecting part boundary have one first confocal point, these two second focuses place this light-emitting component respectively to produce light source, make these two light sources converge light through this second elliptical reflecting part and be incident to a determinand to this first confocal point, and reflect a light source to be measured and return this first confocal point, penetrated by this first focus after making this source reflection to be measured, and
At least one sensor, is arranged in this first focus of this multifocal condenser, to receive this light source to be measured, detects physiological status for this sensor.
2. multifocal optically focused physiological sensing device according to claim 1, it is characterized in that, this the second elliptical reflecting part in this multifocal condenser also comprises two the first elliptical reflecting portions, and each this one end, the first elliptical reflecting portion has this second focus respectively.
3. multifocal optically focused physiological sensing device according to claim 1, is characterized in that, this first elliptical reflecting part and this second elliptical reflecting part are one of the forming.
4. multifocal optically focused physiological sensing device according to claim 1, is characterized in that, this determinand is positioned on this first confocal point.
5. multifocal optically focused physiological sensing device according to claim 1, is characterized in that, this second elliptical reflecting part is inclined upwardly in this first elliptical reflecting part.
6. multifocal optically focused physiological sensing device according to claim 5, is characterized in that, the scope at this second elliptical reflecting part angle of inclination is 1 degree to 15 degree.
7. multifocal optically focused physiological sensing device according to claim 1, it is characterized in that, this the second elliptical reflecting part also comprises two the first elliptical reflecting portions and one second elliptical reflecting portion, each this first elliptical reflecting portion has this second transparent flat, it has this second focus, this the second elliptical reflecting portion has one the 3rd transparent flat, it has one second confocal point, this the second elliptical reflecting portion is positioned at one end of this first elliptical reflecting part, and these two the first elliptical reflecting portions are oppositely arranged in this second elliptical reflecting portion, this second transparent flat is connected with the 3rd transparent flat, these two second focuses receive after this light source enters this first elliptical reflecting portion respectively, by this second confocal this light source of point focusing back reflection to this first confocal injection of this first elliptical reflecting part, to be projeced on this determinand.
8. multifocal optically focused physiological sensing device according to claim 7, is characterized in that, this first elliptical reflecting portion is identical with the second elliptical reflecting portion curved surface.
9. the multifocal optically focused physiological sensing device according to claim 2 or 7, is characterized in that, this light-emitting component is arranged in these two second focuses in this second elliptical reflecting part respectively.
10. multifocal optically focused physiological sensing device according to claim 1, is characterized in that, this light-emitting component is red light-emitting element, green luminescence element or infrared light light-emitting component.
11. multifocal optically focused physiological sensing devices according to claim 1, it is characterized in that, this light-emitting component is light emitting diode, surface-mounting LED or laser diode.
12. multifocal optically focused physiological sensing devices according to claim 1, is characterized in that, also comprise a housing, and this housing this light-emitting component coated, this multifocal condenser and this sensor also expose this first confocal point.
13. multifocal optically focused physiological sensing devices according to claim 10, it is characterized in that, the wavelength that this infrared light light-emitting component sends is 1000nm ~ 1700nm, the wavelength that this green luminescence element sends is 500nm ~ 560nm, and the wavelength that this red light-emitting element sends is 600nm ~ 700nm or 900nm ~ 1000nm.
14. multifocal optically focused physiological sensing devices according to claim 10, is characterized in that, this infrared light light-emitting component is in order to measure blood glucose, and this green luminescence element is in order to measure heart rate, and this red light-emitting element is in order to measure blood oxygen.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108348176A (en) * | 2016-11-02 | 2018-07-31 | 华为技术有限公司 | A kind of intelligent wearable device |
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| CN101534701A (en) * | 2006-11-09 | 2009-09-16 | 奥普托斯股份有限公司 | Improvements in or relating to retinal scanning |
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| US5995856A (en) * | 1995-11-22 | 1999-11-30 | Nellcor, Incorporated | Non-contact optical monitoring of physiological parameters |
| US6167290A (en) * | 1999-02-03 | 2000-12-26 | Bayspec, Inc. | Method and apparatus of non-invasive measurement of human/animal blood glucose and other metabolites |
| CN1937956A (en) * | 2004-05-06 | 2007-03-28 | 日本电信电话株式会社 | Component concentration measuring device and method of controlling component concentration measuring device |
| CN101534701A (en) * | 2006-11-09 | 2009-09-16 | 奥普托斯股份有限公司 | Improvements in or relating to retinal scanning |
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