CN2899706Y - Fundus camera - Google Patents
Fundus camera Download PDFInfo
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- CN2899706Y CN2899706Y CN 200620069556 CN200620069556U CN2899706Y CN 2899706 Y CN2899706 Y CN 2899706Y CN 200620069556 CN200620069556 CN 200620069556 CN 200620069556 U CN200620069556 U CN 200620069556U CN 2899706 Y CN2899706 Y CN 2899706Y
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- anterior ocular
- ocular segment
- camera
- camera head
- lens
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Abstract
A fundus camera comprises a body and a preocular camera device movably fixed at one side of the body. The preocular camera device comprises a close-up lens with adjustable focal distance, a base plate, a group of changeable light filters with grid light filters, a color CCD (Charge Coupled Device) image sensor or CMOS (Complementary Metal-Oxide Semiconductor) image sensor with infrared function, and a casing. The close-up lens with adjustable focal distance is mounted at one side of the base plate, the color CCD image sensor or CMOS image sensor with infrared function is mounted at another side of the base plate; the group of changeable light filters with grid light filters are mounted at the same side of the base plate with the color CCD image sensor or CMOS image sensor with infrared function. By adding the preocular camera device, the optic quality of the pictures taken by the fundus camera at preocular in near distance is improved; the preocular inflorescent radiography function is increased; the shooting range is enlarged; and real-time monitoring of pupil visible light ring and the infrared light ring during fundus shooting is realized.
Description
[technical field]
This utility model is about a kind of ophthalmologic examination equipment, is meant a kind of retinal camera especially.
[background technology]
The basic functional principle of existing retinal camera is: penetrate a branch of ring-shaped light in retinal camera, see through illumination optical fundus such as cornea, pupil, crystalline lens, vitreous body; The ophthalmoscopic image that is illuminated returns retinal camera through vitreous body, crystalline lens, cornea etc., image on the target surface of ccd image sensor or cmos image sensor, output eye fundus image information is to Computerized image processing system, for analyzing, check, diagnose, filing.
The illumination path of this retinal camera is: penetrating a branch of ring-shaped light in retinal camera, is a clear ring of light when arriving the eye pupil hole, and illumination light is through illumination optical fundus such as cornea, anterior chamber, pupil, crystalline lens, vitreous body; A round dark space is stayed by ring of light central authorities, and as the imaging passage, ophthalmoscopic image returns the retinal camera imaging through this passage; Because the effect of the ring of light, can overcome illumination light reflective when cornea, anterior chamber, pupil, crystalline lens, vitreous body.
The imaging optical path of this retinal camera is: because the optical fundus retina is on lenticular focal plane, so the image on optical fundus is equivalent to an infinity target (normal conversely speaking, Qu Guangdu eyes should be clearly when seeing the infinity target); Retinal camera will be made a video recording to the optical fundus by crystalline lens, just is equivalent to the shooting to an infinity target, so system far away is centred one's hope in the design of its optical imagery light path, adds focus adjustment or compensation, and coverage is taken into account high myopia and high hypermetropia.
The major defect that exists in the prior art is: because the illumination path of existing retinal camera must pass through anterior ocular segment (cornea, the anterior chamber, eye pupil, crystalline lens, vitreous body etc.) could arrive optical fundus (claiming oculi posterior segment again), and the imaging optical path on optical fundus must be through anterior ocular segment (vitreous body, crystalline lens, eye pupil, the anterior chamber, cornea etc.) just can return retinal camera, so, the quality of optical fundus shooting and the situation of anterior ocular segment have very confidential relation, when using retinal camera to carry out the optical fundus shooting, if can take the image of some anterior ocular segment earlier, just can and check that diagnosis provides some that the data of reference value is arranged more for the optical fundus shooting.Yet existing retinal camera is centred one's hope on system far away, and the optical quality that anterior ocular segment is closely taken is difficult to guarantee that quality of optical imaging such as its imaging definition, distortion are relatively poor.
In addition, when carrying out the optical fundus shooting, visible or the infrared ring-shaped light that penetrates in the retinal camera, should be a clear ring of light when arriving the pupil of anterior ocular segment, the position of this ring of light and clear situation, directly influence the image quality of optical fundus shooting, because tested eye can be moving, can blink, the ring of light needs to adjust at any time, and retinal camera self does not have eye pupil ring of light real-time monitoring and control, when the colored optical fundus shooting of carrying out visible light and FFA (Fundus Fluorescein Angiography) fluorescence fundus angiography, the operator can lean on the visible ring of light of naked eyes direct observation eye pupil, but carry out infrared light exempt from ICG (Indocyanine Green) the indocyanine green choroid radiography of mydriasis shooting and infrared light the time, the operator with the naked eye can't see the infrared ring of light of this eye pupil.
[summary of the invention]
Technical problem to be solved in the utility model is to provide a kind of retinal camera with anterior ocular segment camera head.
This utility model solves the problems of the technologies described above by the following technical programs: a kind of retinal camera, comprise body, and the movable anterior ocular segment camera head that is fixed on body one side.
Described utility model further is specially:
Described anterior ocular segment camera head comprise adjustable focal length close-up lens, substrate, have one group of switchable filter lens of grid filter lens, with colored CCD (the Charge Coupled Device Charge Coupled Device (CCD)) imageing sensor of infrared function or CMOS (the complementary matal-oxide semiconductor of Complementary Metal-Oxide Semiconductor) imageing sensor, shell; Wherein the close-up lens of adjustable focal length is installed in a side of substrate, the opposite side that is installed in substrate with the colored CCD imageing sensor or the cmos image sensor of infrared function, one group of switchable filter lens is installed in colored CCD imageing sensor or the cmos image sensor side identical with substrate with infrared function, shell be set in the adjustable focal length of assembling close-up lens, substrate, have one group of switchable filter lens of grid filter lens and with the colored CCD imageing sensor of infrared function or the outside of cmos image sensor.
One side of the horizontal direction of described retinal camera body and vertical direction respectively is equipped with a hook, described anterior ocular segment camera head comprises a hook box, described anterior ocular segment camera head is fixed on as required by hook box on the hook of horizontal direction or vertical direction, and described hook box fixedly is assembled on the shell.
Described anterior ocular segment camera head comprises function switch and power supply, control and holding wire, and described function switch and power supply, control and holding wire are assemblied in the described hook box.
The advantage of this utility model retinal camera is: add the anterior ocular segment camera head;
1, improves the anterior ocular segment pickup quality; Enlarge image pickup scope, the photographic images quality is eye socket, simple eye, eyes, facial until whole head preferably;
2, utilize the filter system of retinal camera self to penetrate different light, comprise the exciting light that excites filter lens to leach in the machine, cooperate the one group of switchable filter lens that has the grid filter lens in the anterior ocular segment camera head, can carry out the anterior ocular segment shooting of multiple demand, comprise anterior ocular segment fluorescein sodium (Fluorescein Sodium) radiography;
3, realize the real-time monitoring of the visible ring of light of anterior ocular segment eye pupil and the infrared ring of light, comprise that the real-time monitoring of the visible ring of light of eye pupil when colored optical fundus shooting that retinal camera carries out visible light is with FFA (Fundus Fluorescein Angiography) fluorescence fundus angiography and retinal camera carry out the real-time monitoring of the infrared infrared ring of light of eye pupil when exempting from the mydriasis shooting with infrared ICG (Indocyanine Green) indocyanine green choroid radiography, easy to operate accurate, can guarantee the optical fundus pickup quality.
4, anterior ocular segment camera head, two kinds of fixing meanss are easily realized multiple function, make the more perfect function of existing retinal camera.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the bulk junction composition of this utility model retinal camera.
Fig. 2 is the STRUCTURE DECOMPOSITION figure of the anterior ocular segment camera head of this utility model retinal camera.
Fig. 3 is the constitutional diagram of Fig. 2, and wherein part is cutd open and shown.
Fig. 4 is the front view of this utility model retinal camera, and wherein the anterior ocular segment camera head is fixed on the hook of body horizontal direction one side.
Fig. 5 is the vertical view of this utility model retinal camera, angle of anterior ocular segment camera head beat wherein, and the retinal camera body is ajusted.
Fig. 6 is the vertical view of this utility model retinal camera, and wherein the anterior ocular segment camera head is ajusted, angle of retinal camera body beat.
Fig. 7 is the front view of this utility model retinal camera, and wherein the anterior ocular segment camera head is fixed on the hook of body vertical direction one side.
[specific embodiment]
See also Fig. 1 to Fig. 3, this utility model retinal camera comprises body 1, and Fig. 3 anterior ocular segment camera head 100, the structure of described body 1 is the structure of existing retinal camera, described anterior ocular segment camera head 100 comprises the close-up lens 110 of Fig. 2 adjustable focal length, substrate 120, the one group of switchable filter lens 130 that has the grid filter lens, colored CCD (Charge Coupled Device Charge Coupled Device (CCD)) imageing sensor or CMOS (the complementary matal-oxide semiconductor of Complementary Metal-Oxide Semiconductor) imageing sensor 140 with infrared function, shell 150, function switch 160, power supply, control and holding wire 170, and hook box 180.
The close-up lens 110 of adjustable focal length is installed in a side of substrate 120, the opposite side that is installed in substrate 120 with the colored CCD imageing sensor or the cmos image sensor 140 of infrared function, one group of switchable filter lens 130 is installed in the identical side of the colored CCD imageing sensor of infrared function or cmos image sensor 140 and substrate 120, shell 150 is set in the close-up lens 110 of the adjustable focal length of assembling, substrate 120, the one group of switchable filter lens 130 that has the grid filter lens, and with the outside of the colored CCD imageing sensor or the cmos image sensor 140 of infrared function, function switch 160 and power supply, control and holding wire 170 are assemblied in the hook box 180, this hook box 180 is fixedly assembled with shell 150, thereby constitute anterior ocular segment camera head 100, as shown in Figure 3.
One side of the horizontal direction of the body 1 of retinal camera and a side of vertical direction respectively are equipped with a hook 12, can anterior ocular segment camera head 100 be fixed on the hook 12 of horizontal direction or vertical direction as required, thereby realize that anterior ocular segment is made a video recording or the real-time monitoring of the eye pupil ring of light.
See also Fig. 4 to shown in Figure 6, anterior ocular segment camera head 100 is fixedly mounted on the hook 12 of body 1 horizontal direction one side, and this operation principle with anterior ocular segment camera head 100 retinal cameras is as described below.
Anterior ocular segment camera head 100 is fixed on the hook 12 of retinal camera body 1 horizontal direction one side, the eye pupil ring of light 14 hot spot 16 shapes slightly a little further that make the optical axis of anterior ocular segment camera head 100 and 1 outgoing of retinal camera body in an angle, horizontal hunting mechanism by retinal camera body 1, anterior ocular segment camera head 100 is ajusted, aim at anterior ocular segment, at this moment retinal camera body 1 amesiality (as Fig. 6); Because hot spot 16 departs from the ring of light 14 position clearly, so be a bigger uniform light spots, this hot spot 16 can be used as the anterior ocular segment illumination, utilize the filter system of retinal camera body 1 self to penetrate different light simultaneously, comprise the exciting light that excites filter lens to leach in the machine, cooperate the one group of switchable filter lens 130 that has the grid filter lens in the anterior ocular segment camera head 100, can carry out the anterior ocular segment shooting of multiple demand, comprise anterior ocular segment fluorescein sodium (Fluorescein Sodium) radiography.
In addition, anterior ocular segment camera head 100 has the function of adjustable focal length and function conversion, can change examinee's distance, extremely far can take by near, utilize ambient lighting light (as indoor light, sun diffused light), the function that cooperates anterior ocular segment camera head 100 adjustable focal lengths, the regulatory function permutator, select automatic or manual exposure and automatic or manual white balance, make anterior ocular segment camera head 100 can adapt to different distance, different brightness, can both take under the situation of different-colour, except that anterior ocular segment, also can photograph eye socket, simple eye, eyes, facial until whole head.
This retinal camera can also carry out the real-time monitoring of the visible ring of light of eye pupil and the infrared ring of light: on the hook 12 of retinal camera body 1 vertical direction one side, fixedly the anterior ocular segment camera head 100, as shown in Figure 7, the eye pupil ring of light 14 shapes that make the optical axis of anterior ocular segment camera head 100 and retinal camera outgoing in an angle, utilize the ring of light 14 on 100 pairs of eye pupils of anterior ocular segment camera head to make a video recording, the institute's image of taking the photograph input computer, on computer display, arrange a little picture to show, can be to the real-time monitoring of the visible ring of light of eye pupil and the infrared ring of light; Comprise the real-time monitoring of the visible ring of light of eye pupil when retinal camera carries out the shooting of colored optical fundus with FFA (FundusFluorescein Angiography) fluorescence fundus angiography, and anterior ocular segment camera head 100 has the infrared photography function, can carry out the real-time monitoring of the infrared infrared ring of light of eye pupil when exempting from the mydriasis shooting with infrared ICG (Indocyanine Green) indocyanine green choroid radiography equally.
The difference of this utility model retinal camera and existing retinal camera is:
1, existing retinal camera independently is not used for the anterior ocular segment camera head of anterior ocular segment shooting, but by the optical fundus camera system (telescopic system) of retinal camera self anterior ocular segment is closely taken, optical qualities such as its imaging definition, distortion are all relatively poor; Install the full details that the anterior ocular segment camera head can photograph anterior ocular segment additional, optical indexes such as its imaging definition, distortion can both be improved.
2, existing retinal camera does not have independently anterior ocular segment camera head, make the optical axis of anterior ocular segment camera head optical imaging system and retinal camera self illuminator the optical axis type in an angle, utilize the filter system of retinal camera self to penetrate different light, comprise the exciting light that excites filter lens to leach in the machine, cooperate the one group of switchable filter lens that has the grid filter lens in the anterior ocular segment camera head, carry out the anterior ocular segment shooting of multiple demand, comprise anterior ocular segment fluorescein sodium (Fluorescein Sodium) radiography.
3, existing retinal camera does not have independently anterior ocular segment camera head, certainly just can not use the function of anterior ocular segment camera head adjustable focal length and function conversion, change examinee's distance, extremely far can take by near, utilize ambient lighting light (as indoor light, sun diffused light), the function that cooperates anterior ocular segment camera head adjustable focal length, the regulatory function permutator, select automatic or manual exposure and automatic or manual white balance, make the anterior ocular segment camera head can adapt to different distance, different brightness, can both take under the situation of different-colour, except that anterior ocular segment, can photograph picture quality eye socket preferably, simple eye, eyes, facial until whole head.
4, existing retinal camera does not have the real-time monitoring of the visible ring of light of eye pupil and the infrared ring of light, when the colored optical fundus shooting of carrying out visible light and FFA (Fundus Fluorescein Angiography) fluorescence fundus angiography, the operator is by the visible ring of light of naked eyes direct observation eye pupil, carrying out infraredly when exempting from mydriasis shooting with infrared ICG (Indocyanine Green) indocyanine green choroid radiography, the operator with the naked eye can't see the infrared ring of light of this eye pupil; Owing to tested eye can move, can blink, the ring of light needs to adjust at any time, and the infrared ring of light of eye pupil loses run-home if can not monitor in real time at this moment, brings and operates inconvenience, just may influence pickup quality; Install the anterior ocular segment camera head additional, make the emergent light of illuminator of the optical axis of anterior ocular segment camera head optical imaging system and retinal camera self in an angle ring-like, can be to the real-time monitoring of the visible ring of light of eye pupil and the infrared ring of light, comprise that the real-time monitoring of the visible ring of light of eye pupil when retinal camera carries out the shooting of colored optical fundus with FFA (Fundus FluoresceinAngiography) fluorescence fundus angiography and retinal camera carry out the real-time monitoring of the infrared infrared ring of light of eye pupil when exempting from the mydriasis shooting with infrared ICG (Indocyanine Green) indocyanine green choroid radiography, easy to operate accurate, can guarantee the optical fundus pickup quality.
Claims (6)
1. a retinal camera comprises body, it is characterized in that: comprise that activity is fixed on the anterior ocular segment camera head of body one side.
2. retinal camera as claimed in claim 1 is characterized in that: described anterior ocular segment camera head comprise adjustable focal length close-up lens, substrate, have one group of switchable filter lens, imageing sensor, the shell of grid filter lens; Wherein the close-up lens of adjustable focal length is installed in a side of substrate, imageing sensor is installed in the opposite side of substrate, one group of switchable filter lens is installed in an imageing sensor side identical with substrate, shell be set in the adjustable focal length of assembling close-up lens, substrate, have the outside of the one group of switchable filter lens and the imageing sensor of grid filter lens.
3. as retinal camera as described in the claim 2, it is characterized in that: described imageing sensor is with the colorful charge coupled device imageing sensor of infrared function or complementary matal-oxide semiconductor imageing sensor.
4. as retinal camera as described in the claim 2, it is characterized in that: a side of the horizontal direction of described retinal camera body is equipped with a hook, described anterior ocular segment camera head comprises a hook box, described anterior ocular segment camera head is fixed on the described hook by hook box, and described hook box fixedly is assembled on the shell.
5. retinal camera as claimed in claim 2, it is characterized in that: a side of the vertical direction of described retinal camera body is equipped with a hook, described anterior ocular segment camera head comprises a hook box, described anterior ocular segment camera head is fixed on the described hook by hook box, and described hook box fixedly is assembled on the shell.
6. as claim 4 or 5 described retinal cameras, it is characterized in that: described anterior ocular segment camera head comprises function switch and power supply, control and holding wire, and described function switch and power supply, control and holding wire are assemblied in the described hook box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069556 CN2899706Y (en) | 2006-02-20 | 2006-02-20 | Fundus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069556 CN2899706Y (en) | 2006-02-20 | 2006-02-20 | Fundus camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2899706Y true CN2899706Y (en) | 2007-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620069556 Expired - Fee Related CN2899706Y (en) | 2006-02-20 | 2006-02-20 | Fundus camera |
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| CN (1) | CN2899706Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102988023A (en) * | 2012-12-19 | 2013-03-27 | 苏州康捷医疗股份有限公司 | Lens for examining anterior segment |
| CN103108583A (en) * | 2010-06-25 | 2013-05-15 | 安尼迪斯保健系统有限公司 | Method and apparatus for imaging the choroid |
| CN104107030A (en) * | 2013-04-17 | 2014-10-22 | 佳能株式会社 | Ophthalmologic Imaging Apparatus, Method Of Controlling The Same, And Program |
| CN106618478A (en) * | 2017-01-16 | 2017-05-10 | 中国科学院上海光学精密机械研究所 | Handheld fundus camera with main illuminating rays sharing same light path |
-
2006
- 2006-02-20 CN CN 200620069556 patent/CN2899706Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103108583A (en) * | 2010-06-25 | 2013-05-15 | 安尼迪斯保健系统有限公司 | Method and apparatus for imaging the choroid |
| CN103108583B (en) * | 2010-06-25 | 2015-09-09 | 安尼迪斯保健系统有限公司 | For to the method for choroid imaging and device |
| CN102988023A (en) * | 2012-12-19 | 2013-03-27 | 苏州康捷医疗股份有限公司 | Lens for examining anterior segment |
| CN104107030A (en) * | 2013-04-17 | 2014-10-22 | 佳能株式会社 | Ophthalmologic Imaging Apparatus, Method Of Controlling The Same, And Program |
| CN106618478A (en) * | 2017-01-16 | 2017-05-10 | 中国科学院上海光学精密机械研究所 | Handheld fundus camera with main illuminating rays sharing same light path |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Fuzhou Fuda Photoelectric Equipment Co., Ltd. Assignor: Chen Pinghuai Contract fulfillment period: 2008.12.1 to 2013.11.30 Contract record no.: 2008350000226 Denomination of utility model: Fundus camera Granted publication date: 20070516 License type: Exclusive license Record date: 20081231 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.1 TO 2013.11.30; CHANGE OF CONTRACT Name of requester: FUZHOU FALDAN PHOTOELECTRIC EQUIPMENT CO., LTD. Effective date: 20081231 |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHANG TAO Free format text: FORMER OWNER: CHEN PINGHUAI Effective date: 20110113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 350003 3-3F, RONGQIAO AREA 3, NO. 60, WEST RING NORTH ROAD, FUZHOU CITY, FUJIAN PROVINCE TO: 361000 5/F, NO. 52, HUAXIN ROAD, SIMING DISTRICT, XIAMEN CITY, FUJIAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110113 Address after: Huaxin Road, Siming District of Xiamen city in Fujian province 361000 No. 52 five floor Patentee after: Zhang Tao Address before: 350003, 3-3F, three District, 60 West Central Road, Fuzhou, Fujian Patentee before: Chen Pinghuai |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 Termination date: 20120220 |