CN104887179A - Visual handheld fundus camera without display screen - Google Patents
Visual handheld fundus camera without display screen Download PDFInfo
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- CN104887179A CN104887179A CN201510250974.XA CN201510250974A CN104887179A CN 104887179 A CN104887179 A CN 104887179A CN 201510250974 A CN201510250974 A CN 201510250974A CN 104887179 A CN104887179 A CN 104887179A
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Abstract
The invention relates to a visual handheld fundus camera without a display screen. The visual handheld fundus camera comprises an observing tube (15) and a shooting tube (16) which are communicated with each other, a rotatable lighting module serving as a light source is connected at the upper end of the front of the observing tube (15) and used for lighting a fundus and comprises a 450nm narrow band pass filter (1), a white LED (light-emitting diode) reflector lamp (2), a front-end amplifying lens assembly and a light splitter (6), the front-end amplifying lens assembly is positioned in the front of the observing tube (15) and used for focusing light entering the fundus and amplifying a fundus image, the light splitter (6) is positioned in the observing tube (15) and used for separating a light path of the front-end amplifying lens assembly, one path of light horizontally enters a fundus observing module, and the other path of light enters a shooting record module positioned in the shooting tube. According to the camera, an optical real image seen from a fundus observing window is consistent with an image stored in a photosensitive element, and limitation of imaging effects of the liquid crystal display screen is avoided.
Description
Art
The invention belongs to field of medical technology, particularly a kind ofly do not need display screen and visual hand-held fundus camera.
Background technology
Examination of ocular fundus is Application comparison a kind of diagnostic mode widely in ophthalmology, and adopt the mode of examination of ocular fundus, doctor can check whether the optic nerve, retina etc. on patient optical fundus have pathological changes to occur intuitively.
Existing examination of ocular fundus equipment is mainly divided into two kinds:
The first is ophthalmofundoscope, directly observes primarily of after optical lens imaging, and this equipment can only be observed, and does not have image and stores and analyzing and processing function, be unfavorable for the disease analysis that doctor is follow-up, cause diagnosis subjectivity larger;
The second is fundus camera, mainly after optical lens imaging, add photographic system, but due to imaging optical path and illuminator many employings same light path, cause image fault larger, the picture of doctor on liquid crystal display screen it is seen that after photographic head and cmos image sensor process, now just creates difference with real optical fundus real image, for this fine structure in optical fundus, a bit difference just may cause the mistake of diagnosis, and then the treatment of impact to patient.
The patent No. a kind of fundus camera that has been the disclosure of the invention of CN103431839A, but the light path of its illuminator and imaging optical path have overlapping, easily interference is caused to the picture that optical fundus is, and examiner observes similarly is image after photographic head and cmos image sensor process, real optical fundus optics real image directly can not be observed.
The patent No. a kind of hand-held ophthalmoscope that has been the disclosure of the invention of CN1080509A, but it adopts the mode of highlighted exposed photographic to fundus photography, and higher source luminance can stimulate pupil to reduce instantaneously, reduces the quality of taking pictures.Although be furnished with photographic system, external photographing unit not only makes complex structure, loses portability, too increases cost.
The patent No. a kind of hand-held fundus camera that has been the disclosure of the invention of CN103815869A, the image that what this invention also existed that examiner observes on screen similarly is after photographic head and CCD or cmos image sensor process, directly can not observe the problem of real optical fundus optics real image.
The patent No. a kind of visual digital ophthalmoscope that has been the disclosure of the invention of CN102512137A, the patent No. somascope at the bottom of a kind of visual eye that has been the disclosure of the invention of CN103099600A, although these two kinds inventions can make examiner directly observe real optical fundus real image, but they are all be equipped with single anti-digital camera to meet this condition, considerably increase the cost of equipment like this, be unfavorable for the popularization of equipment.
Summary of the invention
The object of the invention is the above-mentioned deficiency overcoming prior art, a kind of visual hand-held fundus camera without display screen is provided.Technical scheme of the present invention is as follows:
Without a visual hand-held fundus camera for display screen, comprise be interconnected inspection section (15), shooting cylinder (16), it is characterized in that,
The upper end anterior at inspection section (15) is connected with as light source for illuminating the lighting module on optical fundus, and described lighting module comprises (450) nm narrow-band pass filter (1) and white light LEDs shot-light (2); Before (450) nm narrow-band pass filter of this module is placed in LED spotlight, directly stimulate pupil for preventing the white light source of high brightness; Camera module can rotate, to adjust the light angle entering optical fundus;
Front end amplifying lens group: the front portion being positioned at inspection section (15), comprising the planoconvex lens (3) be arranged in successively in same light path, biconcave lens (4) and planoconvex lens (5), eye fundus image being amplified for focusing on the light on incident optical fundus simultaneously.
Spectroscope (6); Be positioned at inspection section (15), be used for being separated the light path through front end amplifying lens group, a road light level enters fundus observation module, and another road light then enters the shooting logging modle being positioned at shooting cylinder;
Observation Blocks at the bottom of optical fundus: be made up of collecting lens (7), eyepiece (8) and fundus observation window (9) successively, after spectroscope (6) carries out light path separation, the light path of level enters collecting lens (7), then converges on eyepiece (8);
Shooting logging modle: comprise convex lens (10), photo-sensitive cell (11) and image processor, another light path after spectroscope enters this module, is admitted to image processor after being gathered after the convergence of convex lens (10) by photo-sensitive cell.
Described shooting logging modle can also comprise the WiFi sending module be connected with image processor, for being sent by the image after image processor process.
The present invention designs and mainly improves the structure of existing examination of ocular fundus equipment, and improvement mainly contains 3 points:
(1) first does not need to show eye fundus image by liquid crystal display screen, not only eliminates the cost of liquid crystal display screen, and simplifies complete machine structure, make fuselage less, easy convenient operation and carrying with.
(2) it two is that illuminator is independently separated with imaging camera system, and external light source can not produce interference to the light path of imaging, and such presented eye fundus image is more clear, and the picture quality shot is higher.
(3) it three is utilize spectroscope, the light returned from fundus reflex is divided into two-way, one tunnel can make examiner observe real optical fundus optics real image, photographic head can be utilized again to carry out shooting preserve on another road simultaneously, the optics real image that examiner sees from fundus observation window is consistent with the image that photo-sensitive cell is preserved, not by the restriction of liquid crystal display screen imaging effect.
This visual hand-held fundus camera configuration is relatively simple, and easy to operate, be easy to carry with, the optical fundus real image that examiner observes is truly clear, is compared to and utilizes digital camera as photographic system, significantly reduces the cost of fundus camera; External light source can not produce interference to the light path of imaging system, and the optical fundus real image presented in fundus observation window is more clear, and the optical fundus picture quality shot is higher.The image photographed is sent to multiple computers by WiFi or cell-phone customer terminal carries out showing and storing, and is conveniently undertaken holding a consultation or/and carry out state of an illness tracking to those who are investigated by different expert, solves the problems that existing fundus camera exists.
Accompanying drawing explanation
Fig. 1 is the structure key diagram of the visual hand-held fundus camera without display screen of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described in further detail:
Refer to Fig. 1, the visual hand-held fundus camera without display screen of the present invention comprises following modules:
(1) lighting module: comprise 450nm narrow-band pass filter 1 and white light LEDs shot-light 2; This module is used for illuminating optical fundus as the light source of fundus camera, before 450nm narrow-band pass filter is added in LED spotlight, prevent the white light source of high brightness from stimulating pupil reduce instantaneously thus reduce the quality of taking pictures, whole module is semifixed on inspection section 15 by screw, can carry out the rotation of 0 degree ~ 90 degree to adjust the light angle entering optical fundus.
(2) front end amplifying lens group: the front portion being positioned at inspection section 15, is made up of planoconvex lens 3, biconcave lens 4 and planoconvex lens 5 successively, amplifies for focusing on the light on incident optical fundus to eye fundus image simultaneously.
(3) spectroscope 6; Spectroscope 6 and horizontal direction are 45 degree and place, and be used for being separated the light path through front end amplifying lens group, a road light level enters fundus observation module, and another road then vertically enters shooting logging modle.
(4) fundus observation module: fundus observation module is made up of collecting lens 7, eyepiece 8 and fundus observation window 9 successively.After spectroscope 6 carries out light path separation, the light path of level enters collecting lens 7, then converges on eyepiece 8, and now examiner can observe optical fundus real image clearly from fundus observation window.
(5) take logging modle: be positioned at and the shooting cylinder 16 that be connected vertical with inspection section 15, by (two) convex lens 10, CMOS photo-sensitive cell 11, image processor and WiFi sending module 13, to take pictures and illuminated pushbutton switch 12 forms.Light path vertical after spectroscope enters this module and can carry out shooting can being sent on remote computer or cell-phone customer terminal screen by WiFi module to eye fundus image and show, and now takes the optical fundus real image seen in the eye fundus image of preservation and fundus observation window completely the same.To take pictures and illuminated pushbutton switch is designed to upwards to push open illumination of beginning, press the button and take pictures
(6) lithium battery and charging circuit 14: with lighting module with take logging modle and be connected, for white light LEDs shot-light, image processor and WiFi sending module provide power supply.
The light path of visual hand-held fundus camera to traditional fundus camera without display screen of the present invention is innovated, the light path of tradition fundus camera is generally designed to LED light and directly or after reflection takes in eyeball, the light be reflected back directly enters photographic head and takes pictures, illumination path and imaging optical path have overlap, cause the decline of quality of taking pictures.And the present invention creates part is to utilize spectroscope to be separated light path, achieve the function of optical fundus real image observation and Taking Pictures recording simultaneously, and lighting module and observation image-forming module separate, illumination path and imaging optical path do not interfere with each other, and enhance the definition of taking pictures.
During use, inspection section is aimed at the eyes of those who are investigated, push to take pictures and illuminated pushbutton switch 12 to open white light LEDs shot-light 2, and appropriate rotating spot lamp enters the angle of the light on optical fundus with adjustment, the light that fundus reflex returns is through front end amplifying lens group, enter spectroscope 6 and be divided into independently two-way, one road light level enters fundus observation module, and examiner just can see steady and audible eye fundus image eye alignment fundus observation window 9; Another road then vertically enters shooting logging modle, and by 11 imagings, image procossing and WiFi sending module 13 are sent to eye fundus image on the screen of remote computer or cell-phone customer terminal and show.The optics real image that the image that telecreen shows and examiner see from fundus observation window does not have parallax, only has cmos imaging and WiFi to transmit the of short duration time delay caused.Now can press press button 12 of taking pictures and shooting preservation is carried out to carry out the follow-up treatment and analysis to eye fundus image to the eye fundus image seen, also can be taken pictures by Long-distance Control.
Claims (2)
1. without a visual hand-held fundus camera for display screen, comprise be interconnected inspection section (15), shooting cylinder (16), it is characterized in that,
The upper end anterior at inspection section (15) is connected with as light source for illuminating the lighting module on optical fundus, and described lighting module comprises (450) nm narrow-band pass filter (1) and white light LEDs shot-light (2); Before (450) nm narrow-band pass filter of this module is placed in LED spotlight, directly stimulate pupil for preventing the white light source of high brightness; Camera module can rotate, to adjust the light angle entering optical fundus;
Front end amplifying lens group: the front portion being positioned at inspection section (15), comprising the planoconvex lens (3) be arranged in successively in same light path, biconcave lens (4) and planoconvex lens (5), eye fundus image being amplified for focusing on the light on incident optical fundus simultaneously;
Spectroscope (6); Be positioned at inspection section (15), be used for being separated the light path through front end amplifying lens group, a road light level enters fundus observation module, and another road light then enters the shooting logging modle being positioned at shooting cylinder;
Observation Blocks at the bottom of optical fundus: be made up of collecting lens (7), eyepiece (8) and fundus observation window (9) successively, after spectroscope (6) carries out light path separation, the light path of level enters collecting lens (7), then converges on eyepiece (8);
Shooting logging modle: comprise convex lens (10), photo-sensitive cell (11) and image processor, another light path after spectroscope enters this module, is admitted to image processor after being gathered after the convergence of convex lens (10) by photo-sensitive cell.
2. the visual hand-held fundus camera without display screen according to claim 1, it is characterized in that, described shooting logging modle also comprises the WiFi sending module be connected with image processor, for being sent by the image after image processor process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510250974.XA CN104887179A (en) | 2015-05-15 | 2015-05-15 | Visual handheld fundus camera without display screen |
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| CN201510250974.XA CN104887179A (en) | 2015-05-15 | 2015-05-15 | Visual handheld fundus camera without display screen |
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| CN104887179A true CN104887179A (en) | 2015-09-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308742A (en) * | 2016-10-20 | 2017-01-11 | 天津大学 | Visual direct digital ophthalmoscope |
| CN108378819A (en) * | 2018-05-02 | 2018-08-10 | 重庆贝奥新视野医疗设备有限公司 | Fundus camera and virtual reality imaging device |
| 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 |
| CN112754427A (en) * | 2019-10-21 | 2021-05-07 | 西安市第四医院 | Head fixing part for fundus photography examination |
| CN112998645A (en) * | 2019-12-20 | 2021-06-22 | 苏州因确匹电子科技有限公司 | Fundus imaging device, fundus imaging system, and fundus imaging method |
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| US6079830A (en) * | 1992-08-31 | 2000-06-27 | Canon Kabushiki Kaisha | Eye measuring apparatus having signal processing means for calculating eye information |
| JP2002306419A (en) * | 2001-04-13 | 2002-10-22 | Canon Inc | 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 |
| CN104586351A (en) * | 2014-11-06 | 2015-05-06 | 苏州微清医疗器械有限公司 | Portable fundus camera |
| CN204797793U (en) * | 2015-05-15 | 2015-11-25 | 天津大学 | Visual hand -held type fundus camera of no display screen |
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2015
- 2015-05-15 CN CN201510250974.XA patent/CN104887179A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6079830A (en) * | 1992-08-31 | 2000-06-27 | Canon Kabushiki Kaisha | Eye measuring apparatus having signal processing means for calculating eye information |
| JP2002306419A (en) * | 2001-04-13 | 2002-10-22 | Canon Inc | 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 |
| CN104586351A (en) * | 2014-11-06 | 2015-05-06 | 苏州微清医疗器械有限公司 | Portable fundus camera |
| CN204797793U (en) * | 2015-05-15 | 2015-11-25 | 天津大学 | Visual hand -held type fundus camera of no display screen |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308742A (en) * | 2016-10-20 | 2017-01-11 | 天津大学 | Visual direct digital ophthalmoscope |
| 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 |
| CN108378819A (en) * | 2018-05-02 | 2018-08-10 | 重庆贝奥新视野医疗设备有限公司 | Fundus camera and virtual reality imaging device |
| CN108378819B (en) * | 2018-05-02 | 2023-10-27 | 重庆贝奥新视野医疗设备有限公司 | Fundus camera and virtual reality imaging apparatus |
| CN112754427A (en) * | 2019-10-21 | 2021-05-07 | 西安市第四医院 | Head fixing part for fundus photography examination |
| CN112998645A (en) * | 2019-12-20 | 2021-06-22 | 苏州因确匹电子科技有限公司 | Fundus imaging device, fundus imaging system, and fundus imaging method |
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