CN103431839A - Fundus camera - Google Patents
Fundus camera Download PDFInfo
- Publication number
- CN103431839A CN103431839A CN201310331065XA CN201310331065A CN103431839A CN 103431839 A CN103431839 A CN 103431839A CN 201310331065X A CN201310331065X A CN 201310331065XA CN 201310331065 A CN201310331065 A CN 201310331065A CN 103431839 A CN103431839 A CN 103431839A
- Authority
- CN
- China
- Prior art keywords
- optical system
- fundus
- reflecting mirror
- lure
- optical axis
- 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
Links
Images
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
The invention discloses an fundus photographic optical system, which comprises a photographic optical system, an illumination optical system and a perspective optical system, wherein the illumination optical system comprises a hollow reflecting mirror; the perspective optical system comprises a light-emitting element and a partition board which are arranged in sequence towards the optical path transmission direction of an examined eye; the perspective optical system, the illumination optical system and the photographic optical system share the hollow reflecting mirror and an eye objective lens; the optical axis of the prospective optical system reflected by the hollow reflecting mirror is common with the optical axis of the prospective optical system reflected by the hollow reflecting mirror; the partition board is optically conjugate with the pupil of the examined eye. The partition board is imaged on the examined fundus via the prospective optical system after being lightened by the light-emitting element, so that the looking direction of the examined eye is in accordance with the optical axis of the photographic optical system, active guidance of the examined eye is realized, and alignment is realized. The fundus photographic optical system disclosed by the invention has the advantages of compact structure, easiness and convenience in operating and capability of shooting clear and accurate fundus images.
Description
Technical field
The present invention relates to field of medical, particularly relate to the fundus photography optical system in a kind of examination of ocular fundus equipment.
Background technology
For realizing the inspection to tested eye Abnormal fundus or disease; the examination of ocular fundus equipment that prior art provides is taken pictures as the products such as fundus camera adopt original photographic film; but picture effect is poor, need the examiner to look eyepiece by eye and observe eye fundus image, the fundus imaging optical system is very complicated.Existing examination of ocular fundus equipment is made lighting source as the products such as fundus camera adopt Halogen light, needs to be equipped with complicated filter system, makes lamp optical system very complicated, the equipment heaviness, and power consumption is large, and the life-span is not long.For this reason, a kind of examination of ocular fundus equipment is proposed in the Chinese patent application of application number 201210097315.3, it comprises CPU control unit, camera optical system and lamp optical system, the CPU control unit is in order to control described camera optical system and lamp optical system, and these two systems share one and connect the order object lens; Its lamp optical system is used light emitting diode matrix as lighting source, though the light sent is assembled like that not as Halogen light, but it is by a simple equipment---binary optical elements solves the problem that light disperses, and LED lighting is without carrying out complicated filtration, so a whole set of examination of ocular fundus equipment is able to simplification, compact conformation, cost, it is also clear that the optical fundus picture is taken the photograph by institute.But in above-mentioned patent application, realize the aligning to tested optical fundus, need manual or automatically remove an optical filter in camera optical system by the CPU control unit, control the infrarede emitting diode Chang Liang in light emitting diode matrix by CPU again, and close white light emitting diode and blue light-emitting diode, regulate manually or automatically focusing lens, observation limit, limit is regulated again, to realize the aligning to tested optical fundus.This kind of alignment removes to aim at tested eye by conditioning equipment, needs observation limit, limit to adjust to aim at, and after aligning, once the direction of gaze of tested eye changes, the equipment that readjusts is again aimed at, and uses inconvenience.
Summary of the invention
The object of the present invention is to provide a kind of fundus camera optical system, comprise for to tested eye initiatively guide lure the optometry system, induce the direction of gaze of tested eye consistent with the optical axis of camera optical system, without the aligning of realizing tested eye by conditioning equipment.
Fundus camera optical system of the present invention is as follows:
A kind of fundus camera optical system, comprise camera optical system and lamp optical system, described lamp optical system comprises the hollow reflecting mirror, this fundus camera optical system also comprises the optometry system that lures, and the described optometry system that lures comprises light-emitting component and the graticle set gradually towards the optic path direction of tested eye; Described optometry system, the illumination optical system camera optical system of unifying that lures shares described hollow reflecting mirror and connects the order object lens; Described lure the optometry systematic optical axis through after described hollow mirror reflects with described camera optical system optical axis common optical axis after the transmission of described hollow reflecting mirror; The pupil optical conjugate of described graticle and tested eye.
Preferably, described light-emitting component is the yellow light LED shot-light, the described optometry system that lures also comprises the graduation camera lens, lure the visual reflex mirror, lure the visor sheet, partially reflecting mirror and lure the head of looking in the mirror, described graticle is arranged in described graduation camera lens, the bright described graticle of the illumination that described yellow light LED shot-light sends, through the described visual reflex mirror that lures, reflect successively, lure the transmission of visor sheet, the partially reflecting mirror reflection, lure a transmission of looking in the mirror, hollow mirror reflects and connect after the order object lens fundus imaging at tested eye, make tested eye can see the patterned yellow laser image spot of a graticle, thereby induce the direction of gaze of tested eye consistent with the optical axis of described camera optical system.
Preferably, described lamp optical system comprises the interchangeable white light LEDs shot-light that sets gradually along the illumination path transmission direction or infrared LED shot-light, insertable 490nm narrow-band pass filter, illumination reflector, described partially reflecting mirror, described look in the mirror head, described hollow reflecting mirror and the described order object lens that connect of luring.
Preferably, described lamp optical system also comprises stain plate camera lens, be arranged between described 490nm narrow-band pass filter and illumination reflector, in described stain plate camera lens, be provided with the stain plate, the corneal vertex optical conjugate of described stain Ban center stain and tested eye.While due to lighting source, illuminating eyes, cornea also can reflected light, this reflected light there will be on imageing sensor, affect the definition of fundus imaging, after increasing the stain plate, under the irradiation of lighting source, the stain on the stain plate images in the corneal vertex place, can eliminate the ghost image produced because of the reflection of tested cornea summit in camera optical system, avoid the impact on the examination of ocular fundus image.
Preferably, described camera optical system comprise set gradually along the imaging optical path transmission direction described connect order object lens, described hollow reflecting mirror, in continuous camera lens, diopter adjustment eyeglass, insertable fundus fluorescein angiography optical filter, imaging lens, infrared fileter and imageing sensor, be provided with aperture diaphragm in continuous camera lens in described.Fundus fluorescein angiography, by camera optical system imaging output video or image on imageing sensor, when the fundus fluorescein angiography optical filter inserts, can be carried out in the optical fundus that illuminated optical system illuminates.
Preferably, described lure the optometry systematic optical axis through after described partially reflecting mirror with described lamp optical system optical axis common optical axis after described partially reflecting mirror transmission; Described illumination optical system unify lure the optometry system shared optical axis after described hollow mirror reflects with described camera optical system common optical axis.
Preferably, describedly lure the visual reflex mirror and lure between the optometry systematic optical axis angle with 35 ° ~ 75 °.
Preferably, there is the angle of 25 ° ~ 65 ° between described illumination reflector and lamp optical system optical axis.
Preferably, described partially reflecting mirror and lure between the common optical axis of optometry system and lamp optical system and have the angle of 30 ° ~ 70 °, be 5% ~ 15% to the gold-tinted reflectance, to the transmitance of 400 ~ 900nm wave-length coverage light, is 85% ~ 95%.
Preferably, described hollow reflecting mirror and lure between the common optical axis of optometry system and lamp optical system and there is the angle of 30 ° ~ 70 °.
Preferably, the diameter of described stain Ban center stain is 3 ~ 7mm, and the aperture of its annular light hole is 8 ~ 20mm.
Preferably, the center light hole of described hollow reflecting mirror is an elliptical aperture, and described elliptical aperture major axis is 15.9 ~ 16.9mm, and minor axis is 10.7 ~ 11.7mm.
Preferably, described diopter adjustment eyeglass can move along the camera optical system optical axis, to absorb the eye fundus image of different diopters, and diopter adjustment scope-15D ~+15D.
Preferably, described fundus fluorescein angiography optical filter is a bandpass filter, and it is 515 ~ 525nm that peak value sees through wavelength, and the shortwave cutoff wavelength is 500 ~ 510nm, and the long wave cut-off function wavelength is 530 ~ 540nm.
Fundus camera optical system of the present invention, not only structure is compact, easy to operate, it lures graticle and the tested eye pupil hole conjugation of optometry system, graticle is after light-emitting component illuminates, image in optical fundus, make the tested hot spot that arrives soon the graticle imaging, thereby induce tested eye fixation direction consistent with the common optical axis that lures optometry system and camera optical system, because of the camera optical system optical axis be through after the transmission of hollow reflecting mirror with lure optometry systematic optical axis common optical axis after the hollow mirror reflects, so the optical axis of camera optical system and this common optical axis are point-blank, so during the hot spot of tested this graticle imaging soon, its direction of gaze is consistent with the optical axis of camera optical system, thereby realized by luring the active guide of optometry system to tested eye, without the aligning of realizing by conditioning equipment tested eye, overcome tested eye because be difficult to the defect of aiming at without object of reference malleable direction of gaze.
The accompanying drawing explanation
Fig. 1 is the fundus camera optical system schematic diagram of the specific embodiment of the invention;
Fig. 2 is the stain plate schematic diagram of the specific embodiment of the invention;
Fig. 3 is the hollow reflecting mirror schematic diagram of the specific embodiment of the invention.
The specific embodiment
Below preferred embodiment the invention will be further described for contrast accompanying drawing combination.
Fundus camera optical system as shown in Figure 1, comprise lamp optical system, lure optometry system and camera optical system.
Described lamp optical system comprises the lighting source 11 set gradually along the illumination path transmission direction, insertable 490nm narrow-band pass filter 12, illumination reflector 14, partially reflecting mirror 19, lure look in the mirror 20, hollow reflecting mirror 3 and connect order object lens 2, wherein lighting source 11 is interchangeable white light LEDs shot-light or infrared LED shot-light.In lamp optical system, the light that white light LEDs shot-light or infrared LED shot-light send illuminates the optical fundus of tested eye 1 through illuminator, so that camera optical system is taken pictures, after inserting 490nm narrow-band pass filter 12, the light that the white light LEDs shot-light sends only has the optical fundus of the bright tested eye 1 of 490nm narrowband wavelength illumination among a small circle, can avoid the pupil contraction of tested 1 that may cause because light is too bright, affect fundus imaging.In addition, in certain embodiments, also can comprise that stain plate camera lens 13 is arranged between insertable 490nm narrow-band pass filter 12 and illumination reflector 14, be provided with stain plate 26 in this stain plate camera lens 13, as shown in Figure 2, preferably, the diameter of stain Ban26 center stain 28 is 3 ~ 7mm, the aperture of its annular light hole is 8 ~ 20mm, under the irradiation of lighting source 11, center stain 28 images in the corneal vertex place of tested eye 1, can eliminate the ghost image produced because of tested eye 1 corneal vertex reflection in camera optical system, avoid the impact on the examination of ocular fundus image.
Described light-emitting component 15, the graduation camera lens 16 that lures the optometry system to comprise to set gradually towards the optic path direction of tested eye 1, lure visual reflex mirror 17, lure visor sheet 18, partially reflecting mirror 19, lure look in the mirror 20, hollow reflecting mirror 3 and connect order object lens 2, be provided with graticle 27 in described graduation camera lens 16, wherein light-emitting component 15 is the yellow light LED shot-light.
Described camera optical system comprise along the imaging optical path transmission direction, set gradually connect order object lens 2, hollow reflecting mirror 3, in continuous camera lens 5, diopter adjustment eyeglass 6, insertable fundus fluorescein angiography optical filter 7, imaging lens 8, infrared fileter 9 and imageing sensor 10, be provided with aperture diaphragm 4 in continuous camera lens 5 in described.Preferably, aperture diaphragm 4 overlaps with the pupil of tested eye 1.The optical fundus of the tested eye 1 be illuminated is by imaging output image or the video on imageing sensor 10 of acting on of camera optical system, when inserting fundus fluorescein angiography optical filter 7, can carry out fundus fluorescein angiography, wherein fundus fluorescein angiography optical filter 7 is a bandpass filter, it is 515 ~ 525nm that peak value sees through wavelength, the shortwave cutoff wavelength is 500 ~ 510nm, and the long wave cut-off function wavelength is 530 ~ 540nm.Separately, need explanation, diopter adjustment eyeglass 6 can move along the optical axis 21 of camera optical system, and the diopter adjustment scope is-15D ~+15D, to absorb the eye fundus image of different diopters.
As shown in Figure 1, described lure optometry system and lamp optical system to share same partially reflecting mirror 19 and lure look in the mirror 20, share same hollow reflecting mirror 3 and connect order object lens 2 with camera optical system simultaneously again; The optical axis 22 of lamp optical system through after partially reflecting mirror 19 transmissions with the optical axis 23 that lures optometry system common optical axis after partially reflecting mirror 19 reflections, form the first common optical axis 24, described the first common optical axis 24 after hollow reflecting mirror 3 reflection with optical axis 21 common optical axis after 3 transmissions of hollow reflecting mirror of camera optical system, form the second common optical axis 25.Wherein, the reflectance of preferred 19 pairs of gold-tinteds of partially reflecting mirror is 5% ~ 15%, to the transmitance of 400 ~ 900nm wave-length coverage light, is 85% ~ 95%.
In some preferred schemes, there is the angle of 25 ° ~ 65 ° between the optical axis 22 of illumination reflector 14 and lamp optical system; Lure visual reflex mirror 17 and lure between optometry systematic optical axis 23 angle with 35 ° ~ 75 °; There is the angle of 30 ° ~ 70 ° between partially reflecting mirror 19 and the first common optical axis 24; There is the angle of 30 ° ~ 70 ° between hollow reflecting mirror 3 and the first common optical axis 24.
In luring the optometry system, the pupil of graticle 27 and tested eye 1 is in the optical conjugate position, yellow light LED lamp 15 illuminates graticle 27, through the described visual reflex mirror 17 that lures, reflect successively, lure 18 transmissions of visor sheet, partially reflecting mirror 19 reflections, lure 20 transmission of looking in the mirror, hollow reflecting mirror 3 reflection and connect order object lens 2 after at the fundus imaging of tested eye 1, make tested eye 1 can see the patterned yellow laser image spot of a graticle, thereby induce the direction of gaze of tested eye 1 consistent with described the second common optical axis 25, consistent with the optical axis 21 of described camera optical system, realize the aligning to tested eye with this, overcome tested eye because be difficult to the defect of aiming at without object of reference malleable direction of gaze.
As shown in Figure 3, in the specific embodiment of the present invention, the light hole 29 of hollow reflecting mirror 3 is an elliptical aperture, and this elliptical aperture major axis is 15.9 ~ 16.9mm, and minor axis is 10.7 ~ 11.7mm.
Fundus camera optical system provided by the invention, not only structure is compact, easy to operate, and can shoot clear eye fundus image accurately, especially lures the active guide of optometry system to tested eye, can simple realization to the aligning of tested eye.
In addition, lamp optical system adopts the illumination of LED lamp, without using complicated optical filtering system, when using the illumination of infrared LED shot-light, because naked eyes can't be seen infrared ray, so this kind of illumination can not stimulate human eye to make its pupil contraction, same, use the white light LEDs shot-light to coordinate with the 490nm narrow-band pass filter, also can reach above-mentioned propinquity effect.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, can also make some being equal to substitute or obvious modification, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (14)
1. a fundus camera optical system, comprise camera optical system and lamp optical system, and described lamp optical system comprises the hollow reflecting mirror, it is characterized in that:
Also comprise the optometry system that lures, the described optometry system that lures comprises light-emitting component and the graticle set gradually towards the optic path direction of tested eye;
Described optometry system, the illumination optical system camera optical system of unifying that lures shares described hollow reflecting mirror and connects the order object lens;
Described lure the optometry systematic optical axis through after described hollow mirror reflects with described camera optical system optical axis common optical axis after the transmission of described hollow reflecting mirror;
The pupil optical conjugate of described graticle and tested eye.
2. fundus camera optical system as claimed in claim 1, it is characterized in that: described light-emitting component is the yellow light LED shot-light, the described optometry system that lures also comprises the graduation camera lens, lure the visual reflex mirror, lure the visor sheet, partially reflecting mirror and lure the head of looking in the mirror, described graticle is arranged in described graduation camera lens, the bright described graticle of the illumination that described yellow light LED shot-light sends, through the described visual reflex mirror that lures, reflect successively, lure the transmission of visor sheet, the partially reflecting mirror reflection, lure a transmission of looking in the mirror, hollow mirror reflects and connect after the order object lens fundus imaging at tested eye, make tested eye can see the patterned yellow laser image spot of a graticle, thereby induce the direction of gaze of tested eye consistent with the optical axis of described camera optical system.
3. fundus camera optical system as claimed in claim 2 is characterized in that: described lamp optical system comprises the interchangeable white light LEDs shot-light that sets gradually along the illumination path transmission direction or infrared LED shot-light, insertable 490nm narrow-band pass filter, illumination reflector, described partially reflecting mirror, described look in the mirror head, described hollow reflecting mirror and the described order object lens that connect of luring.
4. fundus camera optical system as claimed in claim 3, it is characterized in that: described lamp optical system also comprises stain plate camera lens, be arranged between described 490nm narrow-band pass filter and described illumination reflector, be provided with the stain plate in described stain plate camera lens, the corneal vertex optical conjugate of described stain Ban center stain and tested eye.
5. fundus camera optical system as described as claim 1 to 4 any one, it is characterized in that: described camera optical system comprise set gradually along the imaging optical path transmission direction described connect order object lens, described hollow reflecting mirror, in continuous camera lens, diopter adjustment eyeglass, insertable fundus fluorescein angiography optical filter, imaging lens, infrared fileter and imageing sensor, be provided with aperture diaphragm in continuous camera lens in described.
6. fundus camera optical system as described as claim 2 to 4 any one is characterized in that:
Described lure the optometry systematic optical axis through after described partially reflecting mirror with described lamp optical system optical axis common optical axis after described partially reflecting mirror transmission;
Described illumination optical system unify lure the optometry system shared optical axis after described hollow mirror reflects with described camera optical system common optical axis.
7. fundus camera optical system as claimed in claim 2 is characterized in that: describedly lure the visual reflex mirror and lure between the optometry systematic optical axis angle with 35 ° ~ 75 °.
8. fundus camera optical system as claimed in claim 3, is characterized in that: have the angle of 25 ° ~ 65 ° between described illumination reflector and lamp optical system optical axis.
9. fundus camera optical system as claimed in claim 6, it is characterized in that: described partially reflecting mirror and lure between the common optical axis of optometry system and lamp optical system and there is the angle of 30 ° ~ 70 °, to the gold-tinted reflectance, being 5% ~ 15%, is 85% ~ 95% to the transmitance of 400 ~ 900nm wave-length coverage light.
10. fundus camera optical system as claimed in claim 1 is characterized in that: described hollow reflecting mirror and lure between the common optical axis of optometry system and lamp optical system and have the angle of 30 ° ~ 70 °.
11. fundus camera optical system as claimed in claim 4 is characterized in that: the diameter of described stain Ban center stain is 3 ~ 7mm, and the aperture of its annular light hole is 8 ~ 20mm.
12. fundus camera optical system as claimed in claim 1 is characterized in that: the center light hole of described hollow reflecting mirror is an elliptical aperture, and described elliptical aperture major axis is 15.9 ~ 16.9mm, and minor axis is 10.7 ~ 11.7mm.
13. fundus camera optical system as claimed in claim 4 is characterized in that: described diopter adjustment eyeglass can move along the camera optical system optical axis, to absorb the eye fundus image of different diopters, and diopter adjustment scope-15D ~+15D.
14. fundus camera optical system as claimed in claim 4, it is characterized in that: described fundus fluorescein angiography optical filter is a bandpass filter, it is 515 ~ 525nm that peak value sees through wavelength, and the shortwave cutoff wavelength is 500 ~ 510nm, and the long wave cut-off function wavelength is 530 ~ 540nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331065.XA CN103431839B (en) | 2013-08-01 | 2013-08-01 | A kind of fundus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331065.XA CN103431839B (en) | 2013-08-01 | 2013-08-01 | A kind of fundus camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103431839A true CN103431839A (en) | 2013-12-11 |
| CN103431839B CN103431839B (en) | 2015-11-18 |
Family
ID=49685634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310331065.XA Active CN103431839B (en) | 2013-08-01 | 2013-08-01 | A kind of fundus camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103431839B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104757935A (en) * | 2015-04-27 | 2015-07-08 | 奉化科创科技服务有限公司 | Method for eliminating stray light of fundus camera |
| CN108309228A (en) * | 2017-01-16 | 2018-07-24 | 天津工业大学 | portable fundus camera optical system |
| CN110191671A (en) * | 2017-01-18 | 2019-08-30 | 诺华股份有限公司 | The calibration method of the measuring device based on camera for human eye diagnosis |
| CN110267584A (en) * | 2017-07-07 | 2019-09-20 | Ai因塞特株式会社 | For effectively inhibiting the polarisation fundus camera of internal reflection |
| CN110573059A (en) * | 2017-04-28 | 2019-12-13 | 株式会社尼康 | Ophthalmologic imaging optical system, ophthalmologic imaging apparatus, ophthalmologic image acquisition method, and ophthalmologic image system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1868397A (en) * | 2005-05-26 | 2006-11-29 | 株式会社拓普康 | Ophthalmic apparatus |
| US20080212029A1 (en) * | 2007-03-01 | 2008-09-04 | Nidek Co., Ltd. | Fundus camera |
| CN101564285A (en) * | 2008-04-22 | 2009-10-28 | 佳能株式会社 | Fundus camera |
| CN101677761A (en) * | 2007-05-24 | 2010-03-24 | 拓普康株式会社 | Optical image measuring instrument |
| US20100073633A1 (en) * | 2008-09-25 | 2010-03-25 | Canon Kabushiki Kaisha | Fundus camera |
| CN102613957A (en) * | 2012-04-05 | 2012-08-01 | 深圳典邦科技有限公司 | Fundus examination equipment |
| CN102657516A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Automatic retina imaging system |
| JP2012192009A (en) * | 2011-03-16 | 2012-10-11 | Nidek Co Ltd | Fundus photographing apparatus |
-
2013
- 2013-08-01 CN CN201310331065.XA patent/CN103431839B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1868397A (en) * | 2005-05-26 | 2006-11-29 | 株式会社拓普康 | Ophthalmic apparatus |
| US20080212029A1 (en) * | 2007-03-01 | 2008-09-04 | Nidek Co., Ltd. | Fundus camera |
| CN101677761A (en) * | 2007-05-24 | 2010-03-24 | 拓普康株式会社 | Optical image measuring instrument |
| CN101564285A (en) * | 2008-04-22 | 2009-10-28 | 佳能株式会社 | Fundus camera |
| US20100073633A1 (en) * | 2008-09-25 | 2010-03-25 | Canon Kabushiki Kaisha | Fundus camera |
| JP2012192009A (en) * | 2011-03-16 | 2012-10-11 | Nidek Co Ltd | Fundus photographing apparatus |
| CN102613957A (en) * | 2012-04-05 | 2012-08-01 | 深圳典邦科技有限公司 | Fundus examination equipment |
| CN102657516A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Automatic retina imaging system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104757935A (en) * | 2015-04-27 | 2015-07-08 | 奉化科创科技服务有限公司 | Method for eliminating stray light of fundus camera |
| CN108309228A (en) * | 2017-01-16 | 2018-07-24 | 天津工业大学 | portable fundus camera optical system |
| CN110191671A (en) * | 2017-01-18 | 2019-08-30 | 诺华股份有限公司 | The calibration method of the measuring device based on camera for human eye diagnosis |
| CN110573059A (en) * | 2017-04-28 | 2019-12-13 | 株式会社尼康 | Ophthalmologic imaging optical system, ophthalmologic imaging apparatus, ophthalmologic image acquisition method, and ophthalmologic image system |
| CN110267584A (en) * | 2017-07-07 | 2019-09-20 | Ai因塞特株式会社 | For effectively inhibiting the polarisation fundus camera of internal reflection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103431839B (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070019160A1 (en) | Ring light fundus camera | |
| JP5084594B2 (en) | Ophthalmic imaging device | |
| JP6084284B2 (en) | Apparatus and method for imaging an eyeball | |
| CN103431839B (en) | A kind of fundus camera | |
| ES2655703T3 (en) | Intuitive techniques and apparatus for obtaining ophthalmological images | |
| CN106725293B (en) | Lens module and the fundus imaging equipment for using the lens module | |
| NL2006471C2 (en) | Apparatus and method for observing an eye. | |
| US9474443B2 (en) | Ophthalmic apparatus | |
| CN103118586A (en) | Examination instrument | |
| CN103458771A (en) | Retinal imaging device | |
| US9629536B2 (en) | Illumination system for opthalmic microscope, and its operation method | |
| US20130250236A1 (en) | Gaze-fixation aiding and image focusing device | |
| WO2019141283A1 (en) | Fundus camera | |
| CN107997737B (en) | Eye imaging system, method and device | |
| CN109893086A (en) | A kind of fundus camera that lighting source is coaxial with fixation light source | |
| CN106618477A (en) | Portable non-mydriatic fundus imaging device | |
| CN102613957B (en) | Fundus examination equipment | |
| CN104434023A (en) | Front ophthalmoscope used on mobile phone | |
| US20220338733A1 (en) | External alignment indication/guidance system for retinal camera | |
| US8777411B2 (en) | Fundus examination device capable of aiding in gaze fixation and image focusing | |
| KR102263378B1 (en) | Retinal camera and fluorescence with internal fixation target without light path increase | |
| CN208640675U (en) | A kind of multispectral retinal illumination system | |
| CN113876295A (en) | Multi-mode double-off-axis retina imaging device and method | |
| KR20170043714A (en) | Portable retinal camera for both mydriasis and non-mydriasis | |
| US10238283B2 (en) | Lens system for inspection of an eye |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |