CN104042185A - Fundus digital imaging system - Google Patents
Fundus digital imaging system Download PDFInfo
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- CN104042185A CN104042185A CN201410283401.2A CN201410283401A CN104042185A CN 104042185 A CN104042185 A CN 104042185A CN 201410283401 A CN201410283401 A CN 201410283401A CN 104042185 A CN104042185 A CN 104042185A
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- imaging system
- light source
- transducer
- filter plate
- digital imaging
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- 238000003384 imaging method Methods 0.000 title claims abstract description 23
- 238000005286 illumination Methods 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 210000001508 eye Anatomy 0.000 abstract description 23
- 230000006378 damage Effects 0.000 abstract description 11
- 208000027418 Wounds and injury Diseases 0.000 abstract description 6
- 208000014674 injury Diseases 0.000 abstract description 6
- 239000013307 optical fiber Substances 0.000 abstract description 2
- 210000000695 crystalline len Anatomy 0.000 description 15
- 210000003128 head Anatomy 0.000 description 6
- 210000005252 bulbus oculi Anatomy 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 208000017442 Retinal disease Diseases 0.000 description 2
- 206010038923 Retinopathy Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- Eye Examination Apparatus (AREA)
Abstract
The invention relates to a fundus digital imaging system. The fundus digital imaging system comprises an illumination device and is characterized in that the illumination device comprises a light source, a converter, a controller and an illumination lens, the converter is respectively connected with the light source, the illumination lens and the controller, the converter is provided with a plurality of filters, the light source is connected to any filter of the converter through the controller, and light passing through the current filter is transmitted to the illumination lens through an optical fiber. According to the fundus digital imaging system, light of different wave lengths is transmitted into the system through the converter, and injury to the eyes can be lowered when the eyes are detected and photographed.
Description
Technical field
The present invention relates to medical instruments field, particularly, relate to a kind of for neonatal optical fundus digital imaging system.
Background technology
With neonate retinopathy, be the blind main cause of the child of developed country, along with our national economic development, this disease has obvious ascendant trend, and China is annual because general 2-3 ten thousand children of this disease are blind.So, use the hand-held ophthalmofundoscope of special neonate to have very important meaning for neonate retinopathy early screening.
Radix Rumicis high definition optical fundus digital imaging system mainly comprises Radix Rumicis ophthalmofundoscope, electromotion focusing mechanism, digital CCD imaging system, the devices such as the visible illuminator of halogen annular.
Due to a little less than neonate eyes are highly brittle, crystalline lens does not have maturation, so will strictly control number of times and the each irradiate light time of checking while carrying out examination of ocular fundus, simultaneously, because neonate pupil is very little, optical fundus reflective also very weak, photographed neonatal eye fundus image clearly so need to increase exposure rate.What at present conventional ophthalmofundoscope was used is visible ray, and when neonate is irradiated, heavy dose and repeatedly irradiation meeting cause irreversible damage to neonatal eyes.
In addition, due to the continuous irregular motion of neonatal eyeball meeting, and the irradiation that can initiatively hide light, so when taking, need ophthalmofundoscope to have focusing system fast, if the focusing time is long, the image that just may take is just unintelligible because of rocking of eyeball.
Summary of the invention
The invention provides a kind of optical fundus digital imaging system, by using transducer that the light of different wave length is input in described system, can when human eye inspection is taken pictures, reduce the injury to eyes.
For this purpose, the present invention proposes a kind of optical fundus digital imaging system, described system comprises illuminator, described illuminator comprises light source, transducer, controller and illumination camera lens, described transducer is connected with described light source, described illumination camera lens and described controller respectively, described transducer is provided with a plurality of filter plates, by described controller, described light source is connected to any filter plate of described transducer, and the light of the current filter plate of process arrives described illumination camera lens by fiber-optic transfer.
Wherein, described illumination camera lens is set to Crossed Circle structure.
Wherein, described transducer comprises visible ray filter plate and infrared light filter plate.
Wherein, described system also comprises camera head, and the sensitive chip of described camera head is used CMOS chip.
Wherein, described system also comprises focusing component, and described focusing component is comprised of a plurality of liquid lens.
Use optical fundus of the present invention digital imaging system, there is following beneficial effect:
1) the application uses transducer to provide infrared light supply and two kinds of light sources of visible light source for system, because infrared light supply is less to the damage of human eye, use under normal circumstances infrared light supply human eye is observed and taken a picture, the eye fundus image weak for reflectivity used visible light source, two kinds of light sources are replaced according to specific circumstances, can effectively reduce the injury to human eye;
2), by the switching controls to visible light source and infrared light supply, can, when controlling exposure dose, obtain high-quality eye fundus image;
3) sensitive chip of the application's system is used CMOS chip, has shortened time of exposure, has improved the brightness of image, has reduced the irradiation time of light source to optical fundus simultaneously, thereby has reduced the injury to human eye;
4) the application's system utilizes liquid lens to form focusing component, has shortened the focusing time, thereby solved neonatal eyeball, often moves, and is difficult to the problem of focusing.
Accompanying drawing explanation
By reference to accompanying drawing, can more clearly understand the features and advantages of the present invention, accompanying drawing is schematically to should not be construed as the present invention is carried out to any restriction, in the accompanying drawings:
Fig. 1 shows the structural representation of the illuminator of optical fundus of the present invention digital imaging system;
Fig. 2 shows the structural representation of optical fundus of the present invention digital imaging system.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
Fig. 1 shows the structural representation of the illuminator of optical fundus of the present invention digital imaging system.
With reference to Fig. 1, the illuminator 40 of embodiments of the invention comprises light source 100, transducer 200, controller 300 and illumination camera lens 400, transducer 200 is connected with light source 100, illumination camera lens 400 and controller 300 respectively, transducer 300 is provided with a plurality of filter plates, by controlling controller 300, light source 100 is connected to any filter plate of transducer 200, the light of the current filter plate of process is transferred to illumination camera lens 400 by optical fiber 500.
Light source 100 can be used the wider light source of spectrum, as metal halogen light source, thereby can obtain by the filtering of filter plate the light of visible light wave range and the light of infrared band.
Transducer 200 comprises visible ray filter plate and infrared light filter plate, by the control of controller 300, can select light source to be connected to visible ray filter plate or infrared light filter plate.
Controller 300 is for the filter plate of transducer 200 is selected, and can also control intensity and the light application time of light source simultaneously, when obtaining good image quality, can not damage neonate eyes.
In one embodiment, illumination camera lens 400 is set to loop configuration, as being set to Crossed Circle structure or three loop configuration, thereby can avoid occurring shade, realizes the function of shadowless lighting.
Fig. 2 shows the structural representation of a kind of optical fundus of the present invention digital imaging system.
With reference to Fig. 2, the optical fundus digital imaging system of embodiments of the invention, described system comprises ophthalmofundoscope 10, illuminator 20, focusing component 30 and camera head 40, wherein ophthalmofundoscope 10 is positioned at the front end of system, illuminator 20 is positioned at the rear end of ophthalmofundoscope 10, for throwing light on by 10 pairs of human eyes of ophthalmofundoscope, between camera head 40 and illuminator 20, be provided with focusing component 30, for system is focused.
Focusing component 30 is used a plurality of liquid lens to form, and by control device is set, focusing component is regulated.When neonate is detected, because neonatal eyes can be constantly mobile, so the focusing component that uses liquid lens to form can be 200 milliseconds by focusing time shorten, thereby be easy to obtain the photo of fine definition.
The CMOS chip that sensitive chip use sense luminosity in camera head 40 is 72%, minimum exposure time is 5 milliseconds, meanwhile, in camera head 40, is provided with gain amplifying circuit, further improve brightness of image, thereby can reduce long exposure, neonatal eyes are caused damage.
Between illuminator 20 and focusing component 30, also arrange many groups for the lens group 50 of imaging.
Known by above-described embodiment, use optical fundus of the present invention digital imaging system, there is following beneficial effect:
1) the application uses transducer to provide infrared light supply and two kinds of light sources of visible light source for system, because infrared light supply is less to the damage of human eye, use under normal circumstances infrared light supply human eye is observed and taken a picture, the eye fundus image weak for reflectivity used visible light source, two kinds of light sources are replaced according to specific circumstances, can effectively reduce the injury to human eye;
2), by the switching controls to visible light source and infrared light supply, can, when controlling exposure dose, obtain high-quality eye fundus image;
3) sensitive chip of the application's system is used CMOS chip, has shortened time of exposure, has improved the brightness of image, has reduced the irradiation time of light source to optical fundus simultaneously, thereby has reduced the injury to human eye;
4) the application's system utilizes liquid lens to form focusing component, has shortened the focusing time, thereby solved neonatal eyeball, often moves, and is difficult to the problem of focusing.
Although described by reference to the accompanying drawings embodiments of the present invention, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such modification and modification all fall into by within claims limited range.
Claims (5)
1. an optical fundus digital imaging system, described system comprises illuminator, it is characterized in that, described illuminator comprises light source, transducer, controller and illumination camera lens, described transducer is connected with described light source, described illumination camera lens and described controller respectively, described transducer is provided with a plurality of filter plates, by described controller, described light source is connected to any filter plate of described transducer, and the light of the current filter plate of process arrives described illumination camera lens by fiber-optic transfer.
2. a kind of eyeground imaging system according to claim 1, is characterized in that, described illumination camera lens is set to Crossed Circle structure.
3. a kind of eyeground imaging system according to claim 1, is characterized in that, described transducer comprises visible ray filter plate and infrared light filter plate.
4. a kind of eyeground imaging system according to claim 1, is characterized in that, described system also comprises camera head, and the sensitive chip of described camera head is used CMOS chip.
5. a kind of eyeground imaging system according to claim 1, is characterized in that, described system also comprises focusing component, and described focusing component is comprised of a plurality of liquid lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283401.2A CN104042185A (en) | 2014-06-23 | 2014-06-23 | Fundus digital imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283401.2A CN104042185A (en) | 2014-06-23 | 2014-06-23 | Fundus digital imaging system |
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| CN104042185A true CN104042185A (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410283401.2A Pending CN104042185A (en) | 2014-06-23 | 2014-06-23 | Fundus digital imaging system |
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| CN (1) | CN104042185A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108514402A (en) * | 2018-03-14 | 2018-09-11 | 苏州兆乘四海通科技有限公司 | A kind of self-timer fundus camera |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3004276B2 (en) * | 1988-05-31 | 2000-01-31 | 株式会社トプコン | Non-mydriatic retinal camera |
| US20030076477A1 (en) * | 2001-10-22 | 2003-04-24 | Canon Kabushiki Kaisha | Ophthalmic photographic apparatus |
| US20090262303A1 (en) * | 2008-04-22 | 2009-10-22 | Canon Kabushiki Kaisha | Fundus camera |
| CN201431446Y (en) * | 2009-04-24 | 2010-03-31 | 陈平怀 | Fundus observation and recording device utilizing LED light source |
| CN103750815A (en) * | 2013-12-25 | 2014-04-30 | 北京理工大学 | Portable variable camber liquid lens fundus camera |
| CN103815869A (en) * | 2014-03-21 | 2014-05-28 | 苏州微清医疗器械有限公司 | Handheld type fundus camera |
| CN203914867U (en) * | 2014-06-23 | 2014-11-05 | 屠军 | A kind of optical fundus digital imaging system |
-
2014
- 2014-06-23 CN CN201410283401.2A patent/CN104042185A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3004276B2 (en) * | 1988-05-31 | 2000-01-31 | 株式会社トプコン | Non-mydriatic retinal camera |
| US20030076477A1 (en) * | 2001-10-22 | 2003-04-24 | Canon Kabushiki Kaisha | Ophthalmic photographic apparatus |
| US20090262303A1 (en) * | 2008-04-22 | 2009-10-22 | Canon Kabushiki Kaisha | Fundus camera |
| CN201431446Y (en) * | 2009-04-24 | 2010-03-31 | 陈平怀 | Fundus observation and recording device utilizing LED light source |
| CN103750815A (en) * | 2013-12-25 | 2014-04-30 | 北京理工大学 | Portable variable camber liquid lens fundus camera |
| CN103815869A (en) * | 2014-03-21 | 2014-05-28 | 苏州微清医疗器械有限公司 | Handheld type fundus camera |
| CN203914867U (en) * | 2014-06-23 | 2014-11-05 | 屠军 | A kind of optical fundus digital imaging system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108514402A (en) * | 2018-03-14 | 2018-09-11 | 苏州兆乘四海通科技有限公司 | A kind of self-timer fundus camera |
| CN108514402B (en) * | 2018-03-14 | 2024-05-28 | 苏州兆乘四海通科技有限公司 | Self-timer fundus camera |
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Free format text: FORMER OWNER: FENG ZHICHUN Effective date: 20150908 Owner name: BEIJING DONGFANG XINYUE TECHNOLOGY DEVELOPMENT CO. Free format text: FORMER OWNER: TU JUN Effective date: 20150908 |
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Effective date of registration: 20150908 Address after: 100085, 0112-20, room 01, 26 Information Road, Haidian District, Beijing Applicant after: Beijing Oriental crescent Technology Development Co., Ltd. Address before: 100020, The Union Buildings,, 20 Wai Avenue, Beijing, Chaoyang District Applicant before: Tu Jun Applicant before: Feng Zhichun |
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Application publication date: 20140917 |