CN203987984U - A kind of hand-held fundus camera - Google Patents
A kind of hand-held fundus camera Download PDFInfo
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- CN203987984U CN203987984U CN201420131258.0U CN201420131258U CN203987984U CN 203987984 U CN203987984 U CN 203987984U CN 201420131258 U CN201420131258 U CN 201420131258U CN 203987984 U CN203987984 U CN 203987984U
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Abstract
The utility model discloses a kind of hand-held fundus camera, for medically, to human eye examination of ocular fundus, by optical imaging method, obtain human eye eye fundus image, to judge retinopathy pathology and focus.The fundus camera of this hand-held adopts near-infrared and two kinds of LED of white light as lighting source, by optical lens, gathers eye fundus image, and CCD or COMS receive signal, and by image transmitting and processing, human eye eye fundus image are presented on screen.This hand-held fundus camera configuration is simple, can carry, and adopts manual focusing mode, and imaging clearly also can real-time Transmission image.
Description
Technical field
The present invention relates to a kind of hand-held fundus camera, be particularly related to and a kind ofly based on LED, throw light on, the large visual field fundus camera of CCD \ COMS imaging, with near-infrared and white light LEDs as lighting source, by optical lens, gather human eye eye fundus image, CCD or COMS receive signal, and process by hardware-software image, and human eye eye fundus image is presented on screen.
The invention belongs to field of medical technology, take human eye eye fundus image, diagnosis and state of an illness judgement for fundus oculi disease examination and assistance whole body other system disease, relate to image acquisition, and image is processed, the technology such as Internet Transmission.
Background technology
LED light source is the Novel illumination mode occurring in recent years, and its relatively traditional light source has LED to have life-span length, energy savings, brightness advantages of higher.CCD/COMS is a revolutionary product aspect accepting at image in recent years, substantially replaces at present traditional film camera.The present invention is exactly a kind of novel fundus camera in conjunction with above technology.
Fundus photography is a checkup item of extensive use in ophthalmology, and the blood vessel on optical fundus is the unique blood vessel that can observe directly by body surface of human body.Adopt fundus camera, doctor can check whether optic nerve, retina, choroid and the refracting media on optical fundus have pathological changes to exist, can also other system disease be diagnosed with the state of an illness and be judged by the assistance of fundus camera simultaneously, as cerebral infarction, cerebral hemorrhage, cerebral arteriosclerosis, the cerebral tumor, diabetes, nephropathy, hypertension etc.
Traditional desk-top fundus camera comprises complicated illuminator and viewing system, bulky, and system structure is complicated; The some appliance requires on computers software of characteristic just can be used, and machine itself does not possess image memory function, and what even have cannot work alone by separating computer.If need picture, need patient to arrive the front optical fundus picture of taking of instrument, very inconvenient to especial patient, the bed patient of Ru Dui hospital, or the patient in edge mountain area is extremely inconvenient.
The patent No. be CN103099600 disclosure of the invention a kind of examination of ocular fundus instrument, yet LED light source is used in its special definition, and its Lights section complex structure, its internal configurations the mirror of giving out light, and need could realize its function before and after focusing lens.Different from focusing principle of the present invention
The patent No. be CN102499629 disclosure of the invention a kind of direct ophthalmofundoscope, it throws light on by optically focused and mirror lens, by lens imaging in CCD.Different from lighting theory of the present invention.
The present invention proposes a kind of hand-held fundus photography imaging device, adopt the high definition camera lens of large visual field that eye fundus image is imaged on to CCD above, and be presented on screen, can take and obtain and store human eye optical fundus picture, reading images after can being connected with computer.
Volume of the present invention is little, easy to carry, and does not need those who are investigated to carry out mydriasis, can do simply, check quickly and accurately, and especially to bed patient, outlying mountain area patient's examination of ocular fundus provides convenience.
Summary of the invention
Technology of the present invention is dealt with problems:
The present invention proposes a kind of optical fundus scanned imagery device, the problem mainly solving has:
1) portable, the miniaturization of complete machine, mechanical movement part hommization, easy to operate;
2) illuminator is simplified, and adopts LED light source;
3) focusing adopts image plane focusing, has simplified overall structure;
4) solved the problem that traditional fundus camera needs mydriasis;
5) realize take pictures, show in real time, the function such as storage, transmission;
6) directly use lithium battery power supply, safe ready;
Technical solution of the present invention:
A hand-held fundus camera, comprises large visual field high definition optical fundus camera lens and housing.High definition optical fundus, described large visual field camera lens comprises eyeglass, photographic lens module, illumination module and bayonet socket.Described eyeglass consist of two spherical lenses.Described photographic lens module forms high definition imaging lens by the sphere camera lens of multi-disc, and representative ophthalmic lens quantity is 7.Described illumination module is by near-infrared and two kinds of light sources of broad-spectrum white-light, and user can choose different lighting sources, and by button, regulates the light intensity of described light source.Described bayonet socket is to be connected and fixed large visual field high definition camera lens and housing, for convenience detach and installation.Described housing comprises imaging modules, demonstration module, focusing module, battery modules and button module group.Described imaging modules adopts low-light (level) miniature CCD \ COMS chip, and described chip is positioned over to photographic lens image planes.Described demonstration module comprises display chip and display screen, and described display screen is LCDs.Described focusing module is focusing handwheel, adopts bevel type gear to coordinate cam structure, regulates described imaging modules to move forward and backward along optical axis, can be to different diopter human eye blur-free imagings.Described battery modules is connected to computer by data wire or 220V-5V power supply adaptor charges, and described battery module automatic stop function after charging is full of, to protect described hand-held fundus camera.
Principle of the present invention:
Cardinal principle of the present invention comprises optical imagery theory and CCD imaging technique, Display Technique, memory technology, transmission technology etc.
The present invention compared with prior art has the following advantages:
In this device, selected near-infrared and visible LED, basic model adopts near-infrared to search target, and visible ray flash of light is taken.Do not need mydriasis just can photograph eye fundus image.
Adopt CCD to receive image, can realize the miniaturization of product.
Use LCD Panel, user can search by the eye fundus image showing in real time on screen, and takes needed picture.
The mode that has adopted image planes to move in focusing, simplifies the structure, and accomplishes the blur-free imaging of large diopter scope simultaneously.
Between large visual field high definition optical fundus camera lens and housing, adopt bayonet socket pattern, realize dismounting flexibly.
In the camera lens of optical fundus, with illumination optical LED lamp, simplified lighting module.
In software application, this device combines video output in real time with traditional camera function.When general focusing, fundus observation, display is exported amphiblestroid video in real time, and camera function is provided.When having obtained satisfied image and need to preserve, operator presses the button of taking pictures on joystick, and the image that system is preserved current time is recorded in storage card as photo.
In order to realize portable, the miniaturization of complete machine, this device has been done Miniaturization Design to light source, optical system and frame for movement especially in system design, makes its fundus camera more traditional in volume, weight, power consumption and retinal tomography greatly reduce.
Accompanying drawing explanation
Fig. 1 is the structural representation of hand-held fundus camera of the present invention
Fig. 2 is the fundamental diagram of hand-held fundus camera of the present invention
Fig. 3 is optical schematic diagram
Fig. 4 is signal acquiring processing system schematic diagram
In accompanying drawing, the labelling of each parts is as follows: large visual field high definition optical fundus camera lens 1 and housing 2,
1, high definition optical fundus, large visual field camera lens; 2, housing; 3 eyeballs;
10, eyeglass; 11, illumination module, 111, infrared LED; 112, white light LEDs; 12, photographic lens module; 13 bayonet sockets
20, imaging modules, 201, CCD \ COMS; 22, show module, 211, display chip; 212, display screen; 22, focusing module; 23, button module group, 24, battery modules
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is elaborated through row, thereby make advantages and features of the invention more easily be those skilled in the art will recognize that protection scope of the present invention is made to more explicit defining.
Refer to Fig. 1, the embodiment of the present invention comprises: a kind of hand-held fundus camera, and it comprises: 1, high definition optical fundus, large visual field camera lens; 2, housing; 3 eyeballs; 10, eyeglass; 11, illumination module, 111, infrared LED; 112, white light LEDs; 12, photographic lens module; 13 bayonet sockets 20, imaging modules; 22, show module, 201, CCD \ COMS; 211, display chip; 212, display screen; 22, focusing module; 23, button module group, 24, battery modules
Described high definition optical fundus, large visual field camera lens 1 comprises eyeglass 10, illumination group 11 and photographic lens module 12.Illumination group 11 is positioned at photographic lens module 12 upper ends, on high definition optical fundus, large visual field camera lens 1, is provided with bayonet socket 13, can do and be connected easily and dismounting with housing 2.
On housing, there are photographic lens module 12, digital camera imaging module 20, demonstration module 21, focusing module 22, button module group 23.On housing, have the bayonet socket being connected with camera lens to do, bayonet socket rear end is camera imaging module 20, and module is integrated on cam curve cylinder, and housing has battery modules 24.
Meanwhile, on cam, also dispose bevel type gear.There is demonstration module housing rear end, by showing that sheet and display screen form.Housing lower end is handle, and power board has been placed in its inside, lithium battery, focusing knob.On focusing knob, also configured bevel type gear, matched with the bevel type gear of camera module configuration.Adjusting handle, drives bevel gear, thereby drives whole camera module to move forward and backward along optical axis center.
Figure 2 shows that operation principle of the present invention: start on and off switch, battery modules is circuit supply.In large visual field high definition ophthalmofundoscope illumination module in front, near-infrared LED or white light LEDs send illuminating ray, illumination light is irradiated to human eye by eyeglass, the light that human eye fundus reflex is returned passes through eyeglass, by photographic lens, form picture again, now the sensitive chip CCD on camera module receives optical signal, after converting the signal of telecommunication to.Signal is transferred to display chip, and after display chip is processed, on display screen, the image of seeing is done in real-time demonstration.By regulating adjusting handle, can to diopter-20D and+the optical fundus blur-free imaging of human eye within the scope of 20D.After aiming at the position that will observe, press the button of taking pictures, can take the picture on optical fundus, picture can be kept in SD storage card simultaneously.The present invention can also connect in succession by usb data line and computer direct.By reading the content of SD card, can preserve and print captured picture.
Described imaging modules: coordinate photographic lens to be comprised of high definition optical fundus, large visual field camera lens by eyeglass, the described order object lens that connect are aspheric surface, are typically both-sided aspherical, or one side aspheric surface.Its effect is to provide good intermediate image plane.The intermediate image plane being become by above-mentioned aspheric surface, then by photographic lens module 12 by image imaging to CCD.
Described photography module can be that 3～8 eyeglasses form, and its typical structure is 7 slice structures.
Camera lens comprehensive parameters of the present invention: its visual field is greater than 45 degree, its representative value is more than 40.Camera lens can to diopter-20D and+the optical fundus blur-free imaging of eye within the scope of 20D.
Described bayonet socket: camera lens and housing are to adopt to be connected, greatly aspect machine carry and install.User only needs camera lens and housing, to after good, to rotate to fixing position, just can use machine.Its representative instance has adopted rotary bayonet structure.
Described focusing module, consists of focusing handwheel, bevel type gear, focusing drum, pedestal etc.; Focusing handwheel drives subsidiary bevel type gear, and is furnished with corresponding bevel type gear at focusing drum.
First operator rotates focusing handwheel, by rotarily driving the bevel type gear on handwheel, and then drives focusing drum, has cam curve and rotational pin on focusing drum, and it matches with pedestal, when focusing drum rotates, by cam curve, drives pedestal to move forward and backward.Thereby realized the function that the imager chip CCD \ COMS on pedestal moves forward and backward along axle center.
Described demonstration module, is comprised of display chip and LCD screen etc., and display chip, by after the Electric signal processing of CCD \ COMS, is presented on LCD screen, is controlling the function such as storage, LED illumination, flash of light of image simultaneously.
Described button module group, its major function is pictures taken, and software system etc. is set.
Described battery modules, it comprises supply module, and with power supply, adopts lithium battery or other movable power sources.Its representative instance adopts the lithium battery of the 2600mA of 3.7V, is installed in the handle of housing,
Figure 3 shows that lighting theory of the present invention: comprised illumination module, eyeglass.
Near-infrared LED or white light LEDs, eyeglass, photographic lens, CCD \ CMOS.
Its typical wavelengths of near-infrared LED, near 850, can be also the near-infrared LED from 600nm to 1000nm, and the light that it is launched focuses on people's intraccular part through eyeglass.
Its typical wavelengths of white light LEDs is the mixed wavelengths from 400nm to 750nm, and the emittance ratio of its wavelength is for to meet with conventional LED.
LED sends illuminating ray, by eyeglass 3, by eyeglass 3, focuses on people's intraccular part, and illuminating ray illuminates human eye optical fundus uniformly, and the reflected light on the human eye optical fundus being illuminated is inner by eyeball, finally reflects human eye eyeball.After the light of being converted out is collected by eyeglass 3, real image in the middle of limited amphi position is set to.
Figure 4 shows that signal acquiring processing system schematic diagram of the present invention.CCD \ COMS receives the optical signal that comes from optical lens, converts view data to, and in transmission as demonstration module, the processing system in demonstration module 21 is shown in picture number on display screen 212 after view data is processed.
It is mainly CCD \ COMS to show module, and Main Function is that optical signal is changed through row, and optical signal is become to an electric signal transmission imaging modules.
Imaging modules combines several functions, comprises that LED controls, picture-storage, and the several functions such as image conversion, image processing, image demonstration, system operation, are the core components that this system is controlled.
The function of button module group is to be responsible for taking pictures, to arrange systematic parameter and regulating system state.User can arrange system many kinds of parameters by button, such as power, video and picture mode, browsing pictures pattern, light illumination mode, set of time, the date setting of lighting source energy.
The function of battery modules is to be responsible for whole Circuits System to provide power supply support, comprises LED illumination, and liquid crystal display power supply etc. are responsible for the function that battery charges simultaneously.In example, battery is lithium battery.Can use USB2.0 data-interface to be connected to computer or 220V-5V power supply adaptor charges.Power module is automatic stop function after battery is full of, protection power source equipment.
It should be noted that, preferred version of the present invention is announced as above, but it is not limited in listed utilization in description and embodiment.It can be used to the field of the invention completely, for those skilled in the art, therefore can realize easily other modification, not deviate under the general concept that claim and equivalency range limit, the present invention is not limited to specific details and legend as described herein.
Claims (4)
1. a hand-held fundus camera, comprise by eyeglass, photographic lens module, illumination module, high definition optical fundus, the large visual field camera lens that bayonet socket forms, with by imaging modules, show module, focusing module, battery modules, the housing that button module group forms, high definition optical fundus, large visual field camera lens can be connected with housing by bayonet socket and be fixed together, it is characterized in that, the light beam that illumination module is sent is irradiated to eyes through eyeglass, the light beam of eyes fundus reflex passes through eyeglass successively, photographic lens module, being imaged module receives, imaging modules and demonstration module, focusing module is connected with battery modules, show that the image that module receives imaging modules shows, focusing module can regulate the distance of imaging modules and photographic lens module, battery modules is imaging modules and illumination module power supply.
2. a kind of hand-held fundus camera according to claim 1, is characterized in that described imaging modules is comprised of two-dimentional photo-sensitive cell, can be CMOS or CCD chip.
3. a kind of hand-held fundus camera according to claim 1, it is characterized in that described illumination module is comprised of near-infrared LED and two kinds of light sources of broad-spectrum white-light LED, infrared LED light source light spectrum scope is at 800nm ± 15nm, broad-spectrum white-light LED light source light spectrum scope is between 400nm～850nm, illumination module is connected with button module group, and by button module group, regulates the luminous light intensity of illumination module.
4. a kind of hand-held fundus camera according to claim 1, is characterized in that described focusing module regulates described imaging modules to move forward and backward along the optical axis of photographic lens module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131258.0U CN203987984U (en) | 2014-03-21 | 2014-03-21 | A kind of hand-held fundus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131258.0U CN203987984U (en) | 2014-03-21 | 2014-03-21 | A kind of hand-held fundus camera |
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| CN203987984U true CN203987984U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420131258.0U Expired - Fee Related CN203987984U (en) | 2014-03-21 | 2014-03-21 | A kind of hand-held fundus camera |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175660A (en) * | 2016-07-12 | 2016-12-07 | 苏州微清医疗器械有限公司 | Hand fundus camera |
| CN111281337A (en) * | 2020-03-02 | 2020-06-16 | 南方科技大学 | Image acquisition equipment and fundus retina imaging method based on image acquisition equipment |
-
2014
- 2014-03-21 CN CN201420131258.0U patent/CN203987984U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175660A (en) * | 2016-07-12 | 2016-12-07 | 苏州微清医疗器械有限公司 | Hand fundus camera |
| CN111281337A (en) * | 2020-03-02 | 2020-06-16 | 南方科技大学 | Image acquisition equipment and fundus retina imaging method based on image acquisition equipment |
| CN111281337B (en) * | 2020-03-02 | 2023-03-14 | 南方科技大学 | Image acquisition equipment and fundus retina imaging method based on image acquisition equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20180321 |
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| CF01 | Termination of patent right due to non-payment of annual fee |