CN102499629A - Mobile-phone-type direct ophthalmofundoscope - Google Patents
Mobile-phone-type direct ophthalmofundoscope Download PDFInfo
- Publication number
- CN102499629A CN102499629A CN2011103447954A CN201110344795A CN102499629A CN 102499629 A CN102499629 A CN 102499629A CN 2011103447954 A CN2011103447954 A CN 2011103447954A CN 201110344795 A CN201110344795 A CN 201110344795A CN 102499629 A CN102499629 A CN 102499629A
- Authority
- CN
- China
- Prior art keywords
- module
- imaging
- ophthalmofundoscope
- direct
- fundus
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
- A61B3/1208—Multiple lens hand-held instruments
Abstract
The invention discloses a mobile-phone-type direct ophthalmofundoscope. The mobile-phone-type direct ophthalmofundoscope comprises a shell, wherein the lower end of the shell is a handheld end; the upper end of the shell is a video imaging end; a lighting module, an observation module, a fundus imaging module and an image transmission module are arranged in the shell; the lighting module comprises a light source, a light intensity adjusting device, a diaphragm disc, a condenser lens and a reflecting mirror; the condenser lens and the diaphragm disc are arranged in a light path between the light source and the reflecting mirror sequentially; the light source is arranged at the handheld end; the reflecting mirror is arranged at the video imaging end; and an observation system module, the fundus imaging module and an imaging display module are arranged at the video imaging end. The invention provides the mobile-phone-type direct ophthalmofundoscope, which is convenient to carry by an examiner and can photograph the fundus image and transmit the fundus image in a wireless mode.
Description
Technical field
The present invention is the direct ophthalmofundoscope of a kind of handset type, and relates to IMAQ and network transmission techniques, belongs to ophthalmic medical observation diagnostic device field, is mainly used in the fundus oculi disease examination and assists the diagnosis of whole body other system disease and the state of an illness to judge.
Background technology
Adopt direct ophthalmoscopic examination of ocular fundus need not carry out mydriasis to those who are investigated; Be one simply, fast and accurately the inspection; It can check not only whether optic nerve, retina, choroid and refracting media have pathological changes to exist; Can also assist the diagnosis of whole body other system disease and the state of an illness to judge through the inspection on optical fundus simultaneously, like arteriosclerosis, intracranial hematoma, diabetes etc.Traditional direct ophthalmofundoscope comprises illuminator and viewing system, and its ultimate principle is to utilize ophthalmoscope that the pupil of light through seized eye projected those who are investigated's ophthalmic, and the image formation by rays that is reflected out by the those who are investigated optical fundus again is at examiner's ophthalmic.
Traditional direct ophthalmofundoscope does not have the shooting writing function, and different doctors look into patient's fundus oculi disease sight and judge that subjectivity is bigger, and can't form visual medical record management.As need eye fundus image must arrive fixed instrument place just to take pictures, for very inconvenience of especial patient.People such as excuse Yongsheng have carried out the feasibility study of direct ophthalmofundoscope digitized image system; Adopt optics adapter, image-carrying fiber bundle, CCD and direct ophthalmofundoscope of IMAQ card connection and electronic computer; The eye fundus image that direct ophthalmofundoscope is observed be presented on the computer screen with the form of digital signal, but this system equipment is complicated; Difficult quilt is carried, and does not have very strong clinical practice property.Patent 92105247.2 has been introduced a kind of hand-held ophthalmoscope; It has photographic system; The mode that adopts high bright exposure to take a picture is taken pictures to the optical fundus, and on flat-panel screens, shows, but owing to when taking pictures, adopt higher source luminance; Can stimulate human eye to cause pupil moment to be dwindled, influence ophthalmofundoscope and take continuously.And the hand-held ophthalmofundoscope adopts external photographing unit, the instrument more complicated, huge that remains unchanged, and discontented podiatrist gives birth to the portable requirement of ophthalmofundoscope.In addition, ophthalmofundoscope employing beam splitting system is carried out beam split to the light of patient's fundus reflex, only makes the part light intensity get into camera, and this possibly cause the eye fundus image contrast to descend, and can not obtain eye fundus image clearly.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to above-mentioned prior art, and a kind of designs simplification is provided, and body is less and can and show and the direct ophthalmofundoscope of handset type of transmission in realtime imaging under the low-light (level).
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
The direct ophthalmofundoscope of a kind of handset type; It is characterized in that: comprise housing; The lower end of housing is a handheld terminal; The upper end of housing is the video imaging end, is provided with lighting module, Observation Blocks, fundus imaging module and image transmission module in the housing, and described lighting module comprises light source, light intensity adjusting device, apertured plate, collecting lens and reflecting mirror; Described collecting lens, apertured plate are successively set in the light path between light source and the reflecting mirror wherein, and light source is arranged on handheld terminal; Described reflecting mirror is arranged on the video imaging end, and also being provided with described observation at described video imaging end is mould, fundus imaging module and imaging display module, and described observation is that module comprises peephole and focus-compensating system; Described fundus imaging module comprises imaging CCD; This imaging CCD is arranged in the described housing and is arranged in the observation optical path of viewing system, and described imaging display module is arranged on outside the housing, and described image transmission module is connected with described fundus imaging module eye fundus image is sent to the medical record management server.
The direct ophthalmofundoscope of a kind of handset type of the present invention, it has parts such as lithium battery source module, image-forming module, image transmission module.It can make things convenient for the examiner to carry; Image energy to being imaged on examiner's ophthalmic is taken by the low-light (level) camera synchronously; And carry out case history through the storage server that the optical fundus picture is sent to doctor's PC or hospital based on the image transmission module of Radio Transmission Technology and file, conveniently the examiner is carried out the state of an illness follow the tracks of or comprehensively make a definite diagnosis by different experts.The direct ophthalmofundoscope of this handset type can meet community hospital especially and checked the instructions for use that resembles the huge and universal sign property ophthalmic diseases of quantity early screening, can alleviate the problem that the domestic present professional and technical personnel of community hospital lacks simultaneously.
The direct ophthalmofundoscope of handset type of the present invention is made up of lighting module and Observation Blocks two parts, and integrated power module, fundus imaging module and image transmission module are one.The light path axis of Observation Blocks is fixed on a side that deviates from the illumination path axis slightly, and it is reflective that this method can effectively be got rid of the cornea of field of view one side.Lighting module comprises bulb, light intensity adjusting device, apertured plate, collecting lens and reflecting mirror; Observation Blocks comprises peephole and focus-compensating system.Light intensity adjusting device can be through the light intensity at the bottom of the adjusting knob change entering patient's eyes; The focus-compensating system is made up of the little eyeglass of one group of different number of degrees; Lean on the examiner to select to proofread and correct the different ophthalmic refractive degree of patient or examiner with picking, have 24 the dioptric lens of difference: 0D, ± 1D, ± 2D, ± 3D, ± 4D, ± 5D, ± 6D, ± 8D, ± 10D, ± 12D, ± 16D, ± 20D ,-25D; Apertured plate is provided with crack, grid, no red, large spot, five kinds of diaphragms of small light spot, and the conversion apertured plate can obtain required hot spot.
The power module lithium battery capacity requires to be installed in the direct ophthalmoscopic handle more than the 1000mA, can be connected to computer or the 220V-5V power supply adaptor charges by USB2.0 interface data line, is mainly optical fundus lighting module and Observation Blocks and supplies power.Power module is full of the back automatic stop function at battery, the protection power-supply device.
Image-forming module of the present invention adopts miniature imaging CCD and some imaging lens of ultra-low illumination, or existing minisize pick-up head on the market, and minimal illumination is below 0.02Lux, more than 1,300,000 pixels.Imaging CCD is placed in the light path of Observation Blocks, can be in the position of traditional ophthalmofundoscopy person human eye, and the examiner observes at the bottom of the patient's eyes through the LCDs of below, peephole position, and this method can be avoided the examiner to gather and before patient's eye, observe the optical fundus; Imaging CCD also can be in the observation optical path between peephole and the patient; This method still adopts the method for examiner at the bottom of patient's eyes is observed at the peephole place; When the observer can see clearly fundus image; Imaging CCD go up will appear equally clearly as, LCDs is used for showing captured eye fundus image at this moment.Image-forming module has the image memory function, can also be through the usb data line with image uploading to computer or medical record management server.
Image transmission module of the present invention is that the image of preserving in the image-forming module is sent to PC or medical record management server through Wireless transmission mode, can be the pattern of transmitting as soon as shooting, also can be the image in the memory device to be carried out batch upload.Wireless network can be that the Wi-Fi technical standard also can be the ZigBee technical standard, and the ZigBee technology can be expanded the coverage area through increasing routing node, the transmission requirement when reaching actual use.Under the Wi-Fi network schemer, adopt the direct images file of wireless route; Under the ZigBee network schemer, the image transmission module between terminal node (handset type ophthalmofundoscope) and master controller (server terminal) comprises image file and compresses, packs, encodes, unpacks and flow process such as decoding.
Above image-forming module and transport module can adopt all-in-one-piece chip for cell phone group, and chipset possesses high-resolution camera interface and control treatment chip, wireless transport module interface and external memorizer interface; Also can be the freestanding module groups of function, on the veneer camera module, add take pictures, control function such as storage, and Wi-Fi routing module or ZigBee transport module.
Compared with present technology the present invention also has the following advantages: 1, adopted image-forming module; Can carry out image recording to situation at the bottom of the observed patient's eyes of examiner; Conveniently the examiner is carried out the state of an illness and follow the tracks of or comprehensively made a definite diagnosis by different experts, adopted the miniature CCD of low-light (level) in the image-forming module, the light intensity in the illumination path can satisfy imaging requirements; Can avoid the time switching to the imaging source of Gao Liang and causing patient's pupil moment to be dwindled, thereby influence is observed continuously and is taken in imaging.2, adopted the image wireless transport module, can the eye fundus image of taking be uploaded to the medical record management server through Wireless transmission mode, conveniently let different doctors share patient's case history resource.
Description of drawings
Principle schematic when the direct ophthalmofundoscope CCD of Fig. 1 handset type replaces examiner's position of human eye.
Principle schematic when the direct ophthalmofundoscope CCD of Fig. 2 handset type is arranged in observation optical path.
The specific embodiment
The present invention combines accompanying drawing to do further to detail:
As shown in Figure 1, the direct ophthalmofundoscope CCD of handset type replaces examiner's position of human eye.The direct ophthalmofundoscope housing of handset type; The lower end of housing is a handheld terminal, and the upper end of housing is the video imaging end, is provided with Observation Blocks, image imaging module and display module at the video imaging end; Imaging control module 6, image transmission module 7 and power module 8 have been placed 9 li of handheld terminals; Power module 8 adopts lithium battery, and handheld terminal 9 lower ends are usb 1s 0, is used for the output of battery charge and image.When at the bottom of the direct ophthalmofundoscopy patient's eyes with handset type; The illumination light of at first being sent by light source bulb 5 forms converging beam through focus lamp 4; Form certain divergent beams through apertured plate 3 then and get into reflecting prism 2, get into patient's eye 1 and illuminate the optical fundus according to the direction of arrow shown in the figure at last.The light intensity of knob 15 may command bulbs 5 in this process is stirred and is formed different hot spots at the bottom of apertured plate 3 can be controlled in patient's eyes.Imaging CCD11 has replaced the position of traditional direct ophthalmofundoscopy person human eye; The light of patient's fundus reflex departs from behind the illumination path through focus-compensating system 13 and peephole 12 a little; On imaging CCD11, form images; And by LCDs 14 demonstrations, this method can be avoided the examiner to gather and before patient's eye, observe the optical fundus.The examiner adjusts ophthalmoscopic position or rotates the diopter that compensating glass correction patient glasses are selected by focus-compensating system 13 through the eye fundus image of observing on the LCDs 14; When obtaining clear eye fundus image; The examiner presses the button 16 of taking pictures, and eye fundus image can be kept in the memorizer of imaging control module 6; After pressing the button 17, can eye fundus image be sent to the medical record management server through wireless transport module 7.Button 17 can be realized the transmitting as soon as shooting single photo, also can the image in the memorizer be uploaded onto the server in batches.
As shown in Figure 2, the direct ophthalmofundoscope CCD of handset type is arranged in observation optical path.The direct ophthalmofundoscope housing of handset type; The lower end of housing is a handheld terminal; The upper end of housing is the video imaging end, is provided with Observation Blocks, image imaging module and display module at the video imaging end, has placed imaging control module 6, image wireless transport module 7 and lithium battery source module 89 li of handheld terminals; Handle 9 lower ends are usb 1s 0, are used for the output of battery charge and image.When at the bottom of the direct ophthalmofundoscopy patient's eyes with said handset type; The illumination light of at first being sent by bulb 5 forms converging beam through focus lamp 4; Form certain divergent beams through apertured plate 3 then and get into reflecting prism 2, get into patient's eye 1 and illuminate the optical fundus according to the direction of arrow shown in the figure at last.The light intensity of knob 15 may command bulbs 5 in this process is stirred and is formed different hot spots at the bottom of apertured plate 3 can be controlled in patient's eyes.The light of patient's fundus reflex departs from behind the illumination path through focus-compensating system 13 and peephole 12 a little, and examiner's human eye is at peephole 12 places, and CCD11 is in observation optical path.After the examiner sees clear eye fundus image through adjustment ophthalmofundoscope position or after rotating focus-compensating system 13; CCD11 is last also to get a distinct image; Press the button 16 and take pictures this moment; Eye fundus image can be kept in the memorizer of imaging control module 6, and this moment, LCDs 14 was used for showing captured eye fundus image; After pressing the button 17, can eye fundus image be sent to the medical record management server through wireless transport module 7.Button 17 can be realized the transmitting as soon as shooting single photo, also can the image in the memorizer be uploaded onto the server in batches.
Claims (7)
1. direct ophthalmofundoscope of handset type; It is characterized in that: comprise housing; The lower end of housing is a handheld terminal; The upper end of housing is the video imaging end, is provided with lighting module, Observation Blocks, fundus imaging module and image transmission module in the housing, and described lighting module comprises light source, light intensity adjusting device, apertured plate, collecting lens and reflecting mirror; Described collecting lens, apertured plate are successively set in the light path between light source and the reflecting mirror wherein, and light source is arranged on handheld terminal; Described reflecting mirror is arranged on the video imaging end, and also being provided with described observation at described video imaging end is mould, fundus imaging module and imaging display module, and described observation is that module comprises peephole and focus-compensating system; Described fundus imaging module comprises imaging CCD; This imaging CCD is arranged in the described housing and is arranged in the observation optical path of viewing system, and described imaging display module is arranged on outside the housing, and described image transmission module is connected with described fundus imaging module eye fundus image is sent to the medical record management server.
2. the direct ophthalmofundoscope of handset type as claimed in claim 1 is characterized in that: be provided with power module and imaging control module (6) at described handheld terminal; Power module is lighting module and Observation Blocks power supply.
3. the direct ophthalmofundoscope of handset type as claimed in claim 1 is characterized in that: the USB interface that has the eye fundus image derivation of storing in the control module (6) that battery (8) charged, will form images in described handheld terminal bottom.
4. the direct ophthalmofundoscope of handset type as claimed in claim 1 is characterized in that: described imaging display module is LCDs (14).
5. the direct ophthalmofundoscope of handset type as claimed in claim 1 is characterized in that: described light source is a bulb.
6. the direct ophthalmofundoscope of handset type as claimed in claim 1 is characterized in that: described transport module is a wireless transport module.
7. the direct ophthalmofundoscope of handset type according to claim 1 is characterized in that: described power supply is a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103447954A CN102499629A (en) | 2011-11-04 | 2011-11-04 | Mobile-phone-type direct ophthalmofundoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103447954A CN102499629A (en) | 2011-11-04 | 2011-11-04 | Mobile-phone-type direct ophthalmofundoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102499629A true CN102499629A (en) | 2012-06-20 |
Family
ID=46211810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103447954A Pending CN102499629A (en) | 2011-11-04 | 2011-11-04 | Mobile-phone-type direct ophthalmofundoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102499629A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103479328A (en) * | 2013-09-22 | 2014-01-01 | 苏州红蓝光电科技有限公司 | Handheld digital wide-angle ophthalmoscope |
| CN103815869A (en) * | 2014-03-21 | 2014-05-28 | 苏州微清医疗器械有限公司 | Handheld type fundus camera |
| CN104683757A (en) * | 2014-12-24 | 2015-06-03 | 沈竞杰 | Handheld type real-time transmission system and handheld type real-time transmission method for minimally invasive surgery videos |
| CN105662343A (en) * | 2016-01-05 | 2016-06-15 | 中国科学院苏州生物医学工程技术研究所 | Dry eye detection and handheld imaging device and dry eye detection device and detection method thereof |
| JP2016524483A (en) * | 2013-05-07 | 2016-08-18 | ロンドン スクール オブ ハイジーン アンド トロピカル メディシンＬｏｎｄｏｎ Ｓｃｈｏｏｌ Ｏｆ Ｈｙｇｉｅｎｅ ＆ Ｔｒｏｐｉｃａｌ Ｍｅｄｉｃｉｎｅ | Ophthalmoscope |
| CN106923786A (en) * | 2017-04-13 | 2017-07-07 | 南京泰立瑞信息科技有限公司 | A kind of mobile phone shoots frame with eyeground |
| CN107456207A (en) * | 2017-08-31 | 2017-12-12 | 索春如 | A kind of fundus angiography optical module based on mobile device |
| CN108175375A (en) * | 2017-12-28 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | A kind of portable eyeground imaging system and its imaging method |
| CN109381158A (en) * | 2017-08-04 | 2019-02-26 | 黎浩桦 | Adapter, the Fundus Camera System comprising adapter and its application method |
| CN110448266A (en) * | 2018-12-29 | 2019-11-15 | 中国科学院宁波工业技术研究院慈溪生物医学工程研究所 | Random Laser is copolymerized focal line and scans three-dimensional ophthalmoscope and imaging method |
| CN110786823A (en) * | 2019-12-12 | 2020-02-14 | 新疆医科大学第三附属医院 | Infrared pupil identification measurement method and device, storage medium and terminal equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080509A (en) * | 1992-07-03 | 1994-01-12 | 刘红春 | Hand-held ophthalmoscope |
| CN201431446Y (en) * | 2009-04-24 | 2010-03-31 | 陈平怀 | Fundus observation and recording device utilizing LED light source |
| CN101953675A (en) * | 2009-07-15 | 2011-01-26 | 余琪 | Novel hand-held portable fundus camera device |
-
2011
- 2011-11-04 CN CN2011103447954A patent/CN102499629A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080509A (en) * | 1992-07-03 | 1994-01-12 | 刘红春 | Hand-held ophthalmoscope |
| CN201431446Y (en) * | 2009-04-24 | 2010-03-31 | 陈平怀 | Fundus observation and recording device utilizing LED light source |
| CN101953675A (en) * | 2009-07-15 | 2011-01-26 | 余琪 | Novel hand-held portable fundus camera device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016524483A (en) * | 2013-05-07 | 2016-08-18 | ロンドン スクール オブ ハイジーン アンド トロピカル メディシンＬｏｎｄｏｎ Ｓｃｈｏｏｌ Ｏｆ Ｈｙｇｉｅｎｅ ＆ Ｔｒｏｐｉｃａｌ Ｍｅｄｉｃｉｎｅ | Ophthalmoscope |
| CN103479328A (en) * | 2013-09-22 | 2014-01-01 | 苏州红蓝光电科技有限公司 | Handheld digital wide-angle ophthalmoscope |
| CN103815869A (en) * | 2014-03-21 | 2014-05-28 | 苏州微清医疗器械有限公司 | Handheld type fundus camera |
| CN104683757B (en) * | 2014-12-24 | 2017-12-29 | 卓外（上海）医疗电子科技有限公司 | Hand-held Minimally Invasive Surgery Real-time video transmission system and method |
| CN104683757A (en) * | 2014-12-24 | 2015-06-03 | 沈竞杰 | Handheld type real-time transmission system and handheld type real-time transmission method for minimally invasive surgery videos |
| CN105662343A (en) * | 2016-01-05 | 2016-06-15 | 中国科学院苏州生物医学工程技术研究所 | Dry eye detection and handheld imaging device and dry eye detection device and detection method thereof |
| CN106923786A (en) * | 2017-04-13 | 2017-07-07 | 南京泰立瑞信息科技有限公司 | A kind of mobile phone shoots frame with eyeground |
| CN109381158A (en) * | 2017-08-04 | 2019-02-26 | 黎浩桦 | Adapter, the Fundus Camera System comprising adapter and its application method |
| CN107456207A (en) * | 2017-08-31 | 2017-12-12 | 索春如 | A kind of fundus angiography optical module based on mobile device |
| CN107456207B (en) * | 2017-08-31 | 2024-04-05 | 北京东方明美科技有限公司 | Fundus camera optical assembly based on mobile equipment |
| CN108175375A (en) * | 2017-12-28 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | A kind of portable eyeground imaging system and its imaging method |
| CN110448266A (en) * | 2018-12-29 | 2019-11-15 | 中国科学院宁波工业技术研究院慈溪生物医学工程研究所 | Random Laser is copolymerized focal line and scans three-dimensional ophthalmoscope and imaging method |
| CN110786823A (en) * | 2019-12-12 | 2020-02-14 | 新疆医科大学第三附属医院 | Infrared pupil identification measurement method and device, storage medium and terminal equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102499629A (en) | Mobile-phone-type direct ophthalmofundoscope | |
| US11813024B2 (en) | Hand-held portable fundus camera for screening photography | |
| JP6850506B2 (en) | Devices and methods for capturing, analyzing, and transmitting still and video images of the fundus during examination with an ophthalmoscope. | |
| US8836778B2 (en) | Portable fundus camera | |
| US20140267668A1 (en) | Portable fundus camera | |
| US20130057828A1 (en) | Handheld portable fundus imaging system and method | |
| CN103815869A (en) | Handheld type fundus camera | |
| CN102657516B (en) | Automatic retina imaging system | |
| CN103750815A (en) | Portable variable camber liquid lens fundus camera | |
| EP2473092A1 (en) | Handheld portable fundus imaging system and method | |
| WO2013162471A2 (en) | Portable optics adapter to digital camera for fundus imaging | |
| CN105662333A (en) | Portable wide-angle eye bottom imaging device and method | |
| CN106343952A (en) | Eye imaging device | |
| CN104586351A (en) | Portable fundus camera | |
| CN102613957B (en) | Fundus examination equipment | |
| CN210383874U (en) | Automatic alignment and positioning fundus camera | |
| CN109589087A (en) | A kind of fundus camera optical system | |
| CN104887179A (en) | Visual handheld fundus camera without display screen | |
| CN107080595A (en) | A kind of Portable movable medical diagnosis and treatment terminal | |
| CN203987984U (en) | A kind of hand-held fundus camera | |
| CN105105706A (en) | Coaxial type display-screen-free digital direct ophthalmoscope | |
| CN203524644U (en) | Handheld digital wide angle ophthalmoscope | |
| CN204797793U (en) | Visual hand -held type fundus camera of no display screen | |
| CN103479328A (en) | Handheld digital wide-angle ophthalmoscope | |
| CN215605628U (en) | Binocular ophthalmoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |