CN102871643B - The checkout equipment of taking pictures for main body optical fundus and detection module - Google Patents
The checkout equipment of taking pictures for main body optical fundus and detection module Download PDFInfo
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- CN102871643B CN102871643B CN201210363879.7A CN201210363879A CN102871643B CN 102871643 B CN102871643 B CN 102871643B CN 201210363879 A CN201210363879 A CN 201210363879A CN 102871643 B CN102871643 B CN 102871643B
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Abstract
The invention discloses a kind of checkout equipment of taking pictures for main body optical fundus, comprising: object lens: first end points being placed in above-mentioned checkout equipment, for limiting the working interface of the optical axis and above-mentioned checkout equipment; Camera: and be placed in second end points of this checkout equipment, carry out auto-focusing and taken pictures in aforementioned body optical fundus; Polarized illumination beam: comprise the white light beam of taking pictures for eye fundus image and the infrared calibration beam for camera calibrated and auto-focusing; Polarizing beam splitter: be inclined on the above-mentioned optical axis, transmits the polarized light from polarized illumination beam; Diaphragm: be placed in camera front, forms conjugation with above-mentioned working interface; White light source: synchronous with camera flash-light, provides the white light beam in polarized illumination beam; Infrared light supply: the infrared calibration beam in polarized illumination beam is provided, thus make phase function carry out auto-focusing.In addition, the invention also discloses a kind of detection module of taking pictures in main body optical fundus.
Description
Technical field
The present invention relates to main body retina technique for taking field, particularly a kind of checkout equipment of taking pictures for main body optical fundus.In addition, the invention still further relates to a kind of detection module of taking pictures for main body optical fundus.
Background technology
Retinal diseases is generally diagnosed by retinograph, such as, detects 3 kinds develop the fastest ophthalmic, as diabetic ophthalmopathy, glaucoma and senescence degeneration of macula by screening retinograph.More early detect that these diseases more likely postpone even to prevent the forfeiture of vision.
In recent years, hand-held digital fundus camera is the focus of prior art and market striving direction always.It is because it is portable that hand-held digital fundus camera all so allow people expect, price material benefit, exempts from mydriasis, easy to use, for using the patient that the diagnosis of traditional fundus camera is more difficult, the probability that hand-held digital fundus camera can be used to diagnose is larger.And the digital photo that hand-held digital fundus camera stores carries out tele-medicine and diagnosis easily through the Internet and mobile network.US patent 7784940Goldfain, Eye-ViewingDeviceComprisingVideoCaptureOptics disclose the predominant design consideration of hand-held digital fundus camera.SmartscopeM5 is a successful hand-held digital fundus camera, can buy from the OPTOMED company of Finland.
Adopt idiot camera or the hand-held digital fundus camera of mobile phone camera has several large main advantage.It has employed the state-of-the-art technology of idiot camera or mobile phone camera, and as auto-focusing, automatic exposure, high-resolution imaging, built-in LCD display carries out picture browsing, and Built-in Image transforms and carries out telecommunication network transmitting software.Meanwhile, also use the low cost of idiot camera/mobile phone camera and advantage easy to use, thus considerably reduce production cost.And, additionally use the advantage that idiot camera/mobile phone camera is easy to use and very popular, thus greatly reduce expense and the time of technical training and training on operation.
PCT publication WO2011/029064, Yates etc., teach in detail and how to use consumer digital camera to build the hand-held portable fundus photographing unit screened for photograph.
On the other hand, idiot camera or the hand-held digital fundus camera of mobile phone camera also faces several challenge is mainly adopted.First, hand-held digital fundus camera, preferably adopts for calibrating and the infrared beam of auto-focusing and the white light beam for optical fundus shooting.Because human eye exists dispersion, therefore need to carry out dispersion compensation during auto-focusing and retina shooting.The common employing of traditional fundus camera 2 imageing sensors carry out auto-focusing and eye fundus image shooting respectively, can with reference to US patent 7780292Kakuuchi, ophthalmologic examination equipment, and US patent 7431456Nanjo, fundus camera.Hand-held digital fundus camera only adopts single user-friendly camera, therefore needs the existing automatic focusing function of this camera, also has shooting eye fundus image function.
The second, hand-held digital fundus camera, preferably uses convergent beam, by pupil, through predetermined light paths to main body eyes retina.Therefore, there is again a new challenge here, needed the flash lamp light from idiot camera to be coupled in illuminating bundle, to make illuminating bundle still be controlled by photographic head.The solution of prior art (as, PCT publication WO2011/029064, Yatesetal) be the external flashing lamp revising consumer digital camera through hot shoe, but the program is only limitted to the consumer digital camera that outside is furnished with flash lamp and hot shoe, typical product as, DSLR photographing unit (single anti-digital camera lens), heavier, be not suitable as hand-held product.
3rd, hand-held digital fundus camera requires preferably have an energy under the predetermined visual field and distance condition, form the high power objective of initial retinal images.In order to record these images, user-friendly camera also needs to have micro-lens function, so that short distance focuses on (about 60-100 millimeter), and has a low-angle visual field (general 15 degree).Usually, micro-lens has predetermined focal length to regulate without the need to the visual field in order to mate object lens restriction.Prior art solution (e.g., PCT publication WO2011/029064, Yatesetal) adopts the detachable micro-lens with proper focal length.But the consumer digital camera being configured with detachable micro-lens is general all very heavy, is not suitable as portable equipment.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of checkout equipment of taking pictures for main body optical fundus, this checkout equipment adopts user-friendly camera or mobile phone camera, adopts photo-coupler to be coupled in the illuminating bundle of fundus camera by the flash lamp from user-friendly camera; This invention wink that also imagination adopts dispersion compensator to compensate between the infrared light of auto-focusing on retina and the white light of retinal images imaging is fallen apart.The further imagination of this invention adopts convergent-divergent optics to mate user-friendly camera and the shooting visual field and distance.This invention even further imagination employing light-field camera overcomes the out of focus problem because dispersion and initial calibration produce.This checkout equipment can auto-focusing, automatic exposure, high-resolution imaging, and cost is lower, is simple and easy to use.In addition, another technical problem that will solve of the present invention provides a kind of detection module of taking pictures for main body optical fundus.
For solving the problems of the technologies described above, the invention provides a kind of checkout equipment of taking pictures for main body optical fundus, comprising:
Object lens: first end points being placed in above-mentioned checkout equipment, for limiting the working interface of the optical axis and above-mentioned checkout equipment;
Camera: be integrated in this checkout equipment is a part for this checkout equipment, and is placed in second end points of this checkout equipment, carries out auto-focusing and takes pictures to aforementioned body optical fundus;
Polarized illumination beam: comprise the white light beam of taking pictures for eye fundus image and the infrared calibration beam for camera calibrated and auto-focusing;
Polarizing beam splitter: be inclined on the above-mentioned optical axis, transmits the polarized light from polarized illumination beam;
Diaphragm: be placed in camera front, forms conjugation with above-mentioned working interface;
White light source: to provide the white light beam in polarized illumination beam on the built-in flash being coupled to above-mentioned camera, at this, white light source can carry out auto-exposure control to above-mentioned camera;
Infrared light supply: the infrared calibration beam in polarized illumination beam is provided, thus make phase function carry out auto-focusing;
This checkout equipment carries out complete operation by camera, and being modified by camera in this checkout equipment is incorporated in this checkout equipment, becomes a part for checkout equipment, thus can complete auto-focusing and take main body eye optical fundus;
Above-mentioned white light source also comprises:
Light guides, for being directed to photoconverter by the flash lamp light from camera;
Photoconverter, is converted into the white light beam in polarized illumination beam by the flash lamp light from camera.
Described checkout equipment of taking pictures for main body optical fundus also comprises:
Dispersion compensator: fall apart for the wink compensated between white light beam and above-mentioned calibration beam.
Described checkout equipment of taking pictures for main body optical fundus also comprises:
Object locator, is placed in checkout equipment, for setting the distance between main body eye and sighting target.
Described checkout equipment of taking pictures for main body optical fundus also comprises:
The touch device that opens the light, by camera activation, this device that opens the light can control above-mentioned infrared calibration beam.
Described checkout equipment of taking pictures for main body optical fundus also comprises:
Convergent-divergent optics device, convergent-divergent is carried out to the retinal images generated by object lens so that and the visual field of camera match.
Camera comprises:
Fuselage;
Micro-lens; This micro-lens is connected on fuselage.
Polarized illumination beam is converted into a speckle on working interface, this speckle and optical axis phase deviation.
Above-mentioned camera is replaced by mobile phone camera further.
In addition, for solving the problems of the technologies described above, the present invention also provides a kind of detection module of taking pictures for main body optical fundus, comprising:
Object lens: first end points being placed in above-mentioned detection module, for limiting the working interface of the optical axis and above-mentioned detection module;
Polarized illumination beam: comprise the white light beam of taking pictures for eye fundus image and the infrared calibration beam for camera calibrated and auto-focusing;
Polarizing beam splitter: be inclined on the above-mentioned optical axis, transmits the polarized light from polarized illumination beam;
Diaphragm: the front being placed in peripheral hardware camera, forms conjugation with above-mentioned working interface;
White light source: synchronous with camera flash-light, provides the white light beam in polarized illumination beam;
Infrared light supply: the infrared calibration beam in polarized illumination beam is provided, thus make phase function carry out auto-focusing;
Mechanical adapter: second end points being placed in this detection module, for the camera Corresponding matching with detection module outside;
White light source; To provide the white light beam in above-mentioned polarized illumination beam on the built-in flash being coupled to above-mentioned camera; At this, above-mentioned white light source can carry out auto-exposure control to above-mentioned camera;
Infrared light supply: the infrared calibration beam being provided for auto-focusing;
Above-mentioned white light source also comprises:
Light guides, for being directed to photoconverter by the flash lamp light from camera;
Photoconverter, is converted into the white light beam of polarized illumination beam by the flash lamp light from camera.
Described detection module of taking pictures for main body optical fundus also comprises:
Dispersion compensator: fall apart for the wink compensated between white light beam and above-mentioned calibration beam.
Described detection module of taking pictures for main body optical fundus also comprises:
Object locator, is placed in detection module, for setting the distance between main body eye and sighting target.
Described detection module of taking pictures for main body optical fundus also comprises:
The touch device that opens the light, by camera activation, this device that opens the light can control above-mentioned infrared calibration beam.
Described detection module of taking pictures for main body optical fundus also comprises:
Convergent-divergent optics device, for adjusting the retinal images that generated by object lens to match with the visual field of camera.
Polarized illumination beam is converted into a speckle on working interface, this speckle and optical axis phase deviation.
In the present invention, have employed for calibrating and the infrared beam of auto-focusing and the white light beam for optical fundus shooting, because human eye exists dispersion, therefore needing to carry out dispersion compensation during auto-focusing and retina shooting.In addition, idiot camera or the hand-held digital fundus camera of mobile phone camera has several large main advantage is adopted.It has employed the state-of-the-art technology of idiot camera or mobile phone camera, and as auto-focusing, automatic exposure, high-resolution imaging, built-in LCD display carries out picture browsing, and Built-in Image transforms and carries out telecommunication network transmitting software.Meanwhile, also use the low cost of idiot camera/mobile phone camera and advantage easy to use, thus considerably reduce production cost.And, additionally use the advantage that idiot camera/mobile phone camera is easy to use and very popular, thus greatly reduce expense and the time of technical training and training on operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the checkout equipment of taking pictures for main body optical fundus in the first embodiment of the present invention;
Fig. 2 is the structural representation of the checkout equipment of taking pictures for main body optical fundus in the second embodiment of the present invention;
Fig. 3 is the structural representation of the checkout equipment of taking pictures for main body optical fundus in the third embodiment of the present invention;
Fig. 4 is the structural representation of the checkout equipment of taking pictures for main body optical fundus in the present invention's the 4th kind of embodiment;
Fig. 5 is the structural representation of the detection module of taking pictures for main body optical fundus in the first embodiment of the present invention;
Fig. 6 is the structural representation of the detection module of taking pictures for main body optical fundus in the second embodiment of the present invention;
Fig. 7 is the structural representation of the detection module of taking pictures for main body optical fundus in the third embodiment of the present invention;
Fig. 8 is the structural representation of the detection module of taking pictures for main body optical fundus in the present invention's the 4th kind of embodiment.
The object of the invention realization, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
This object of the present invention is for providing a kind of checkout equipment of taking pictures for main body optical fundus, this checkout equipment adopts user-friendly camera or mobile phone camera, photo-coupler is adopted to be coupled in the illuminating bundle of fundus camera by the flash lamp from user-friendly camera, this checkout equipment can auto-focusing, automatic exposure, high-resolution imaging, and cost is lower, is simple and easy to use.In addition, further object of the present invention is a kind of detection module of taking pictures for main body optical fundus is provided.
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
In the present invention, camera can adopt idiot camera, and can certainly adopt the camera of other types, the present invention is not restricted this.As shown in Figure 1, in the first embodiment, the checkout equipment 100 of taking pictures for main body optical fundus comprises object lens 10, idiot camera 20, polarized illumination beam 30, polarizing beam splitter 12, diaphragm 14, dispersion compensator 15 and object locator 40.
Object lens 10 are placed in first end points of checkout equipment 100, define the position of the optical axis 11 and working interface 6.When main body eye 1 and detection start to write 100 alignings carry out examination of ocular fundus time, illuminating bundle 30 projects main body eye pupil hole 3, illuminates retina 2, to make it align and to take pictures.In suitable alignment line, object lens 10 are producing first retinal images near back focal length interface 5 place, and first retinal images is imaged onto again on camera 20.Pupil 10 is also imaged onto on diaphragm 14 by object lens 10, and therefore, any illuminating bundle 30 from pupil 3 will be blocked when entering camera 20.The optical multiplier of object lens 10 is approximately 40D, and diameter is about 30mm.In this way, what object lens 10 provided about 25mm for main body eye 1 facilitates operating distance and retina 2 about 45 degree of enough angulars field of view.Object lens 10 are preferably aspherical lens also can generate the image of high-quality when larger view.
Idiot camera 20 is placed in detection and starts to write 100 second endpoint locations, for recording the fundus imaging by object lens 10.And this phase function carries out auto-focusing and automatic exposure system.Idiot camera 20 refers to auto-focusing, automatic exposure, built-in LCD display, can carry out image storage and transmission, simple for structure, light, consumer digital camera easy to use.The general embedded with network transmitting software of idiot camera 20, this software can by the image transmitting that stores to local computing or processor, thus by picture transfer on the Internet or telemedicine network.The resolution of camera 20 preferably over 20,000 pixels, and pupil size preferably over 10mm to receive all light through diaphragm 14.Idiot camera 20 preferably has a default save set with handled easily.
Idiot camera 20 is usually by fuselage 21 and camera lens 22, and flash lamp 23 forms.Also has built-in LCD display (not showing in FIG) so that scene Shows Picture and can change photographic head setting.The most typical representative of idiot camera 20 is the digital camera of PanasonicDMC-FH22KLUMIX14.1 ten thousand pixel with 3 touch screens.
During camera start, camera lens 22 is shifted out from camera body 21, during camera shutdown, camera lens 22 is loaded fuselage 21.Flash lamp 23 is arranged on fuselage usually, and away from camera lens 22.With DSLR camera (single anti-camera lens) unlike, the hot shoe that idiot camera 20 does not have external flashing lamp special usually, can not provide the simple scheme driving external flashing lamp.On the other hand, DSLR camera is usually very heavy, is not suitable as portable equipment.
Illuminating bundle 30 is polarized light to stop the reflected light from object lens 10 and anterior corneal surface 7 by polarizing beam splitter 12.Polarized illumination beam 30 is by the calibration beam 38 also passing through pin hole 39 from LED light source 37, and heavy chromium spectroscope 33, focal length lens 34, polariscope 35 forms.Polarized beam 30 can also origin autoflash lamp 23 and by the white light beam of condenser lens 31 for taking pictures, pin hole 32, heavy chromium spectroscope 33, focal length lens 34, polariscope 35 forms.Here white light beam 36 refers to the light of flash lamp light 24 after optically focused camera lens 31.Polarized illumination beam 30 carries out preliminary polarization through polariscope 35 at first, then carries out further polarization by polarizing beam splitter 12.Polariscope 35 and polarizing beam splitter 12 carry out cross polarization so that the light through polariscope 35 can reflex on polarizing beam splitter 12.
Polarized illumination beam 30 is convergent beam, assembles at the working interface 6 of checkout equipment 100.Polarized illumination beam 30 on the optical axis 11 with certain angles, is greater than at working interface 6 place and departs from visual axis 1mm position.Polarized illumination beam 30 is assembled through object lens 10, then on punktal lens 34, forms a focal spot.Convergent beam 30 can ensure that the illuminating bundle be irradiated on retina 2 is comparatively large, thus light can effectively enter pupil 3.Depart from pupil center, the distance optical axis 11 at a certain angle projected polarisation illuminating bundle 30 can enter camera 20. by very big less corneal reflex light
Polarizing beam splitter 12 tilts along the optical axis 11 direction, before being placed in diaphragm 14.Polarizing beam splitter only transmits the polarization light from polarized beam 30, and therefore he mostly can reflect the light beam from aspheric surface object lens 10 and cornea 7 surface.Light from cornea 2 accounts for polarization light 30%, is then transferred on camera by polarizing beam splitter 12 and forms retinal images.
The extinction ratio of polarizing beam splitter 12 is preferably 1:500 or higher.Cross polarization light effect can be strengthened by polariscope 35, form the polarized illumination beam 30 reflexed on polarizing beam splitter 12.In order to strengthen cross polarization light effect further, another polariscope can be inserted at polarizing beam splitter 12 rear, cross polarization can be carried out with polariscope 35.
Diaphragm 14 is placed in camera 20 front, by object lens 10, forms conjugation with the interface 6 of checkout equipment 100.The aperture size of diaphragm 14 is corresponding with predetermined minimum pupil size.Such as, the aperture of diaphragm 14 is 12mm, and corresponding minimum pupil size is 3mm.In operation, pupil 3 and working interface 6 align, and diaphragm 14 will stop any light from pupil 3 (being greater than the minimum dimension of pupil).
Calibration beam 38 is from light source 37, and light source 37 is preferably the LED lamplight of infrared wavelength, and therefore calibration beam 38 can make pupil 3 natural extension in dark surrounds, thus checkout equipment 100 can be used for exempting from mydriasis retina image-forming.Light source 37 is preferably the LED of high-power surface luminescence, and area is about 1mm, homogeneous radiation IR line.Calibration beam 38 is by pin hole 39, and heavy chromium spectroscope 33, focus lens 34 forms the focal spot between punktal lens 34 and object lens 10.Calibration beam 38 forms a part for polarized illumination beam 30 at first.Polarized illumination beam 30 is comparatively large in object lens 10 place beam sizes, and be converged to a point when interface 6, then uniform irradiation is on cornea 2.
The flash lamp 23 of camera 20 forms the flash lamp light beam 24 being used for cornea 2 and taking.Light beam 24 is assembled by condenser lens 31, and conducts light beam through pin hole 32, and reflects at heavy chromium spectroscope 33, then again focuses on through focus lens 34.White light beam 36 refers to the light of flash lamp light beam 24 after condenser lens 31, is the second part of composition illuminating bundle 30.Calibration beam 38 and white light beam 36 are after overweight chromium spectroscope 33, and be fused to same light path, this light path has identical beam profile with polarized illumination beam 30.In white light beam 36 the first string, flash lamp 23, condenser lens 31 and pin hole 32 are as white light beam light source.Flash lamp light beam 24 is imported pin hole 32 by condenser lens 31, and flash lamp light 24 is converted into white light beam 36 as optical converter by pin hole 32.
The light guides of other types equally also can be used to be coupled in white light beam 36 by flash lamp light beam 24, such as fiber optics bundle or light guide.If use light guide, use joint length is that the light guide of 50-150mm length replaces condenser lens 31 and pin hole 32.One end of light guide receives the flash of light light beam 24 from flash lamp 23, and the other end is attached to the white light beam 36 towards heavy chromium spectroscope 33 direction.In second scheme of white light beam 36, provide the white light beam 36 synchronous with idiot camera 20 flash lamp 23.Light guide is by flash lamp light beam 24 lead-in light transducer, and flash lamp light beam 24 is converted into white light beam 36 as light converter by photoconverter.
Be coupled in polarized illumination beam 30 by flash lamp light beam 24, make by camera 20, checkout equipment 100 can carry out complete operation.Better scheme is the light source 37 using the touch device 16 that opens the light to control to produce calibration beam 38.When camera 20 is started shooting, pass in and out camera body to control by camera lens 22 and open the light 16.When camera body 21 put back to by camera lens 22, the touch device 16 that opens the light represents turns off the light.In this way, the calibration beam 38 being provided for calibrating checkout equipment 100 and main body eye 1 can be continued.When pressing camera 20 is taken pictures, produce the white light beam 36 for taking pictures.Therefore, polarized beam 30 is by camera control completely, and synchronous with camera operation.
If light source 37 is infrared wavelength, then need to modify to camera 20, need to take out infrared fileter from fuselage 21.Infrared fileter is arranged in camera 20 usually, to stop infrared ray, thus strengthens the color balance of camera.In order to recover the color balance ability of camera 20, the infrared fileter of taking-up can be installed in the light path of white light beam 36.Like this, the camera 20 after amendment can carry out auto-focusing equally and corneal is taken pictures.And traditional cornea camera uses the camera lens of 2 different wave length difference in functionalitys carry out since focusing respectively and take pictures usually.
If light source 37 is infrared wavelength, so the optical dispersion of eyes can cause focal plane 5 (between the infrared beam of auto-focusing and the white light beam for optical fundus shooting) skew 0.5mm to 1mm.In order to obtain the picture quality of high-quality, thus the skew of dispersion compensator 15 focusing unilateral 5 is needed to compensate.The first string of dispersion compensator 15 is at auto-focusing and period moving lens 22 of taking pictures, with the skew that compensate for focus interface 5 is predetermined.Second scheme inserts at auto-focusing and period of taking pictures and take out glass plate.3rd scheme is the skew adopting triplet lens sheet to compensate the focal plane 5 between infrared light and white light.
The welcome reason of the first string of dispersion compensator 15 is, because without the need to increasing other optical body in checkout equipment 100.The self-defined control that the program needs a camera lens 22 to move, the camera SDK (SDK) provided by producer can be realized.But camera 20 does not have SKD, the therefore motion of uncontrollable camera lens 22.
Second scenario-frame of dispersion compensator is simple, and easily implements.Such as, the deviation of the 1mm at compensate for focus interface 5, only the light path between infrared auto-focusing and white light are taken pictures need be inserted the glass plate of 3mm.But the Mechanical Moving of glass plate may the shooting of delayed image.
3rd scheme of dispersion compensator can make white light beam 36 and calibration beam 38 focus on cornea, therefore without the need to carrying out Mechanical Moving simultaneously.Triplet lens sheet for this object has two identical eyeglasses and a symmetrical eyeglass usually, and the triplet lens sheet for this object does not have optical multiplier, can use as glass plate.Triplet lens sheet for this object is very ripe in the prior art.Optical design particulars can with reference to AchromatizingtheHumanEye, byBradleyetal, OptometryandVisionScience, Vol.68, No.8, pp.608-616.
Convergent-divergent optics 28 convergent-divergent is carried out to the retinal images from object lens 10 so that and the aperture visual field of camera 20 match.The simple De-dispersion lens of better scheme is this convergent-divergent optics 28 to be focal length be 60-120mm.Convergent-divergent optics 28 is preferably placed on the position far away apart from object lens 10 back focal plane 5 one focal lengths.Convergent-divergent optics 28 and object lens 10 form a focal power relay, and the light beam in autonomous agent eye pupil hole 3 is delivered to camera 20 in the future.This focal power relay has a zoom factor M, i.e. the ratio of focal length between convergent-divergent optics 28 and object lens 10.
Object locator 40 is sighting target, can guide visual direction and regulate main body eye 1.Localizer 40 is more prone to be made up of the LED light of more than 3 or 3, and these display lamp positions, near the focusing interface rear portion of collimating lens 41, show main body eye 1 by dichroic reflection device 13.For main body eye 1, object locator 40 seems at the not qualified point along the optical axis 11 direction.The direction of visual lines when LED light at every turn opening object locator 40 can guide cornea 2 to take pictures.Object locator 40 is visible light wave, in order to not make iris 3 be upset contraction, light need be dimmed.
As shown in Figure 2, in the second embodiment of checkout equipment, the inside white light source 50 of camera flash-light to viewer 200 produces pulse.White light beam 36 except checkout equipment 200 derives from internal light source 50, and the white light source 36 of checkout equipment 00 derives from outside the flash lamp difference of camera 20, and checkout equipment 200 is identical with checkout equipment 100.
As shown in Figure 2, light sensation opens the light device 51 for receiving the pulsed light from flash lamp 23, thus produces pulse to white light source 50.The light sensation device 51 that opens the light can be photodiode, the pulse of which couple generation current.White light source 50 is preferably white led lamps, and the white light beam 56 of generation is similar to calibration beam 38 characteristic from LED light source 37.White light source 50 is preferably high multiple, the LED of surface light emitting, and light-emitting zone is about 1mm, uniformly light-emitting.In this scenario, white light beam 36, flash lamp 23, light sensation opens the light device 51 and white light source 50 light source as (synchronous with the flash lamp 23 of camera 20) white light beam 36.
As shown in Figure 3, in the third embodiment of checkout equipment, camera 20 is made up of fuselage 21 and micro-lens 25.In checkout equipment 300, the camera lens of camera 20 is made up of micro-lens 25, and in checkout equipment 200, the camera lens of camera 20 is made up of microspur Built-in lens 22, and in addition, checkout equipment 300 is identical with checkout equipment 200.
As shown in Figure 3, micro-lens 25 the visual field that can coordinate camera 20 in checkout equipment 300 is set.Like this, whole visuals field of checkout equipment 300 can both be presented on the display screen of camera 20, and therefore, optical fundus viewer 300 have employed the both full-pixel advantage of camera 20.Such as, fuselage 21 is the PanasonicLumixDMC-GX116MPMicro4/3 mini system camera with 3-inch LCD touch screen, and micro-lens 24 is Panasonic45mmf/2.8 aspheric surface MEGAOISLens.
If micro-lens 25 for Built-in lens can be better.When focal length is fixed and had a predetermined visual field, a lot of idiot camera can carry out microshot, and the visual field that this predetermined field range limits than object lens 10 is much bigger.The micro-lens selecting micro-lens field range and object lens 10 field range to match more is willing to by idiot camera 20.If there is no the micro-lens that can mate, then use assisted zoom optics device 28 (as Fig. 4 and Fig. 7 describes), adjust the field range of object lens 10 to match with the visual field of camera 20.
As shown in Figure 4, in the 4th kind of embodiment of checkout equipment, except following except some, checkout equipment 400 is identical with checkout equipment 200:
The first, checkout equipment 400 is made up of assisted zoom optics device 28 and mobile phone camera, and checkout equipment 200 is made up of camera 20.
The second, the white light source 50 of checkout equipment 400 is synchronous with the operation of mobile phone camera 26, and the white light source 50 of checkout equipment 200 operates synchronous with flash lamp 23.
Mobile phone camera 26 refers to photographic head built-in in mobile phone, and mobile phone camera 26 is commonly the tiny lens 27 that aperture is 5mm.The visual field that the visual field of mobile phone camera 26 generally needs than optical fundus viewer is much bigger.Assisted zoom optics device 28 is preferably a pair double lens for amplifying, and the retinal images that object lens 10 are formed can be adjusted to and match with the field range of mobile phone camera 26 and aperture.Being usually used in operating microscope and slit lamp microscope with a pair double lens for amplifying, its structure, building and adjusting very ripe in these fields.
As shown in Figure 5, in the first embodiment of detection module, camera 20 is attached on optical fundus detection module 500, and flash lamp light enters illuminating bundle 30 and takes for cornea 2.Detection module 500 is reconfigured by checkout equipment 100 and forms an independently equipment.Detection module 500 can be attached to all kinds of camera 20 carry out with the use of, but the size of these cameras and parameter are required to be, and chosen in advance takes for cornea 2.
As shown in Figure 5, object lens 10 are placed in the 1st end points of detection module 500 to limit the optical axis 11 and the working interface 6 of detection module 500.The optical axis 11 and camera lens 22 align.Mechanical adapter is placed in the 2nd end points, and do not show in Figure 5, detection module 500 is attached on camera 20 by this adapter.The existing all kinds of mechanical adapter technology for camera are all ripe.
As shown in Figure 5, condenser lens 31 is placed in predetermined position of aliging with flash lamp 23.When detection module 500 is attached to camera 20, optical axis 11 and camera 20 align, and the flash lamp light beam from flash lamp 23 is assembled and is coupled in the light beam 36 for taking pictures.And establish light 16 by cable and can be controlled by movable camera lens 22.Like this, detection module 500 carries out complete operation by camera 20, thus completes the shooting of cornea 2.
As shown in Figure 6, in the second embodiment of detection module, be attached to by camera 20 on detection module 600, flash lamp produces pulse to the white light source taken for cornea 2.Detection module 600 is reconfigured by checkout equipment 200 and forms an independently equipment.Detection module 600 can be attached to all kinds of camera 20 carries out with the use of, but the size of these cameras and parameter are required to be, and chosen in advance takes for cornea 2.
As shown in picture 6, the photosensitive device 51 that opens the light is placed in precalculated position to receive the flash lamp light beam from flash lamp 23.Be attached to by camera 20 on detection module 600, optical axis 11 and camera 20 align, and the flash lamp from flash lamp 23 activates the photosensitive device 51 that opens the light, the photosensitive device 51 generation current pulse thus produce pulse generate for light beam 56 for shooting to white light source 50 of opening the light.And establishing light device 16 by cable can be controlled by movable camera lens 22.Like this, detection module 600 carries out complete operation by camera 20, thus completes the shooting of cornea 2.
As shown in Figure 7, in the third embodiment of detection module, camera 20 is attached on detection module 700, full frame seizure cornea 2 image.Detection module 700 is reconfigured by checkout equipment 300 and checkout equipment 400 and forms an independently equipment.Detection module 700 can be attached to all kinds of camera 20 carry out with the use of, but the size of these cameras and parameter are required to be, and chosen in advance takes for cornea 2.
As shown in Figure 7, assisted zoom optics device 28 is installed to the 2nd end points of detection module 700, and aligns with optical axis 11.Assisted zoom optics device 28 is preferably a pair double lens for amplifying, retinal images that object lens 10 are formed can be adjusted so that and the visual field of camera 20 and aperture match.When detection module 700 is attached to camera 20, optical axis 11 and camera 20 align, and the light from flash lamp 23 activates light sensation and to open the light device 51, thus light sensation opens the light, device 51 produces pulse to providing the white light source of light beam 56 for shooting.And establishing light device 16 by cable can be controlled by movable camera lens 22.Like this, detection module 700 carries out complete operation by camera 20, thus completes the shooting of cornea 2.Equally, the display screen of camera 20 fills up by the visual field of detection module 700, therefore realizes the both full-pixel shooting of camera 20.
As shown in Figure 8, in the 4th kind of embodiment of detection module, operated by mobile phone camera 26, mobile phone camera 26 is attached on detection module 800, capture retina 2 image with full frame.Detection module 800 is reconfigured by checkout equipment 400 and forms an independently equipment.Detection module 800 can be attached to the mobile phone camera 26 that size and parameter chosen in advance are taken for cornea 2.
As shown in Figure 8, assisted zoom optics device 28 is installed to the 2nd end points of detection module 800, and aligns with optical axis 11.Assisted zoom optics device 28 is preferably a pair double lens for amplifying, retinal images that object lens 10 are formed can be adjusted so that and and the visual field of mobile phone camera 26 and aperture match.When being attached on mobile phone camera 26 by detection module 800, optical axis 11 and camera lens 27 align, and the generation of white light source 50 is synchronous with the operation of mobile phone camera 26, and like this, detection module 800 is undertaken operating by mobile phone camera 26 thus completes the shooting of cornea 2.
Above checkout equipment of taking pictures for main body optical fundus provided by the present invention and detection module are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (14)
1., for the checkout equipment taken pictures in main body optical fundus, comprising:
Object lens: first end points being placed in above-mentioned checkout equipment, for limiting the working interface of the optical axis and above-mentioned checkout equipment;
Camera: be integrated in this checkout equipment is a part for this checkout equipment, and is placed in second end points of this checkout equipment, carries out auto-focusing and takes pictures to aforementioned body optical fundus;
Polarized illumination beam: comprise the white light beam of taking pictures for eye fundus image and the infrared calibration beam for camera calibrated and auto-focusing;
Polarizing beam splitter: be inclined on the above-mentioned optical axis, transmits the polarized light from polarized illumination beam;
Diaphragm: be placed in camera front, forms conjugation with above-mentioned working interface;
White light source: to provide the white light beam in polarized illumination beam on the built-in flash being coupled to above-mentioned camera, at this, white light source can carry out auto-exposure control to above-mentioned camera;
Infrared light supply: the infrared calibration beam in polarized illumination beam is provided, thus make phase function carry out auto-focusing;
This checkout equipment carries out complete operation by camera, and being modified by camera in this checkout equipment is incorporated in this checkout equipment, becomes a part for checkout equipment, thus can complete auto-focusing and take main body eye optical fundus;
Above-mentioned white light source also comprises:
Light guides, for being directed to photoconverter by the flash lamp light from camera;
Photoconverter, is converted into the white light beam in polarized illumination beam by the flash lamp light from camera.
2. the checkout equipment of taking pictures for main body optical fundus as claimed in claim 1, is characterized in that, also comprise:
Dispersion compensator: fall apart for the wink compensated between white light beam and above-mentioned calibration beam.
3. the checkout equipment of taking pictures for main body optical fundus as claimed in claim 1, is characterized in that, also comprise:
Object locator, is placed in checkout equipment, for setting the distance between main body eye and sighting target.
4. the checkout equipment of taking pictures for main body optical fundus as claimed in claim 1, is characterized in that, also comprise:
The touch device that opens the light, by camera activation, this device that opens the light can control above-mentioned infrared calibration beam.
5. the checkout equipment of taking pictures for main body optical fundus as claimed in claim 1, is characterized in that, also comprise:
Convergent-divergent optics device, convergent-divergent is carried out to the retinal images generated by object lens so that and the visual field of camera match.
6. the checkout equipment of taking pictures for main body optical fundus as described in any one of claim 1-5, it is characterized in that, camera comprises:
Fuselage;
Micro-lens; This micro-lens is connected on fuselage.
7. the checkout equipment of taking pictures for main body optical fundus as described in any one of claim 1-5, is characterized in that, polarized illumination beam is converted into a speckle on working interface, this speckle and optical axis phase deviation.
8. the checkout equipment of taking pictures for main body optical fundus as described in any one of claim 1-5, is characterized in that,
Above-mentioned camera is replaced by mobile phone camera further.
9., for the detection module taken pictures in main body optical fundus, comprising:
Object lens: first end points being placed in above-mentioned detection module, for limiting the working interface of the optical axis and above-mentioned detection module;
Polarized illumination beam: comprise the white light beam of taking pictures for eye fundus image and the infrared calibration beam for camera calibrated and auto-focusing;
Polarizing beam splitter: be inclined on the above-mentioned optical axis, transmits the polarized light from polarized illumination beam;
Diaphragm: the front being placed in peripheral hardware camera, forms conjugation with above-mentioned working interface;
White light source: synchronous with camera flash-light, provides the white light beam in polarized illumination beam;
Infrared light supply: the infrared calibration beam in polarized illumination beam is provided, thus make phase function carry out auto-focusing;
Mechanical adapter: second end points being placed in this detection module, for the camera Corresponding matching with detection module outside;
White light source; To provide the white light beam in above-mentioned polarized illumination beam on the built-in flash being coupled to above-mentioned camera; At this, above-mentioned white light source can carry out auto-exposure control to above-mentioned camera;
Infrared light supply: the infrared calibration beam being provided for auto-focusing;
Above-mentioned white light source also comprises:
Light guides, for being directed to photoconverter by the flash lamp light from camera;
Photoconverter, is converted into the white light beam of polarized illumination beam by the flash lamp light from camera.
10. the detection module of taking pictures for main body optical fundus as claimed in claim 9, is characterized in that, also comprise:
Dispersion compensator: fall apart for the wink compensated between white light beam and above-mentioned calibration beam.
11. detection modules of taking pictures for main body optical fundus as claimed in claim 9, is characterized in that, also comprise:
Object locator, is placed in detection module, for setting the distance between main body eye and sighting target.
12. detection modules of taking pictures for main body optical fundus as claimed in claim 9, is characterized in that, also comprise:
The touch device that opens the light, by camera activation, this device that opens the light can control above-mentioned infrared calibration beam.
13. detection modules of taking pictures for main body optical fundus as claimed in claim 9, is characterized in that, also comprise:
Convergent-divergent optics device, for adjusting the retinal images that generated by object lens to match with the visual field of camera.
14. detection modules of taking pictures for main body optical fundus as described in any one of claim 9-13, it is characterized in that, polarized illumination beam is converted into a speckle on working interface, this speckle and optical axis phase deviation.
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| CN201210363879.7A CN102871643B (en) | 2012-09-27 | 2012-09-27 | The checkout equipment of taking pictures for main body optical fundus and detection module |
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| CN201210363879.7A CN102871643B (en) | 2012-09-27 | 2012-09-27 | The checkout equipment of taking pictures for main body optical fundus and detection module |
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203885474U (en) * | 2013-08-24 | 2014-10-22 | 北京高景弘毅科技发展有限公司 | Slit lamp camera with flash function |
| DE102013018547B4 (en) * | 2013-11-05 | 2019-11-07 | Wavelight Gmbh | Device for aligning a focusing lens |
| CN103598872A (en) * | 2013-11-28 | 2014-02-26 | 温州雷蒙光电科技有限公司 | Fundus camera |
| WO2016033590A1 (en) * | 2014-08-31 | 2016-03-03 | Berestka John | Systems and methods for analyzing the eye |
| TWI549648B (en) * | 2014-11-06 | 2016-09-21 | 晉弘科技股份有限公司 | Ophthalmoscope |
| CN106551675A (en) * | 2015-09-30 | 2017-04-05 | 苏州速迈医疗设备有限公司 | A kind of binocular indirect ophthalmoscope with polarization function |
| CN105411524B (en) * | 2015-12-07 | 2020-09-04 | 温州医科大学眼视光器械有限公司 | Pupil detection device |
| US10394004B2 (en) * | 2016-04-05 | 2019-08-27 | Qualcomm Incorporated | Systems and devices having single-sided wafer-level optics |
| CN106725296B (en) * | 2016-12-22 | 2019-01-22 | 苏州科技城医院 | Auxiliary photo-taking device |
| DE102016125646A1 (en) * | 2016-12-23 | 2018-06-28 | Wipotec Wiege- Und Positioniersysteme Gmbh | Measuring and / or sensor device with a camera |
| CN107260123B (en) * | 2017-06-09 | 2020-09-18 | 苏州大学 | Mobile phone external eye ground imaging lens and eye ground image acquisition method |
| CN107450255A (en) * | 2017-08-31 | 2017-12-08 | 索春如 | A kind of fundus imaging apparatus based on mobile device |
| CN107504899B (en) * | 2017-09-30 | 2024-02-02 | 济南蓝动激光技术有限公司 | System and method for continuously tracking and measuring geometrical parameters of overhead line system |
| CN108175375A (en) * | 2017-12-28 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | Portable fundus imaging system and imaging method thereof |
| CN108814545A (en) * | 2018-03-14 | 2018-11-16 | 北京理工大学 | It is a kind of be used in combination with smart phone exempt from mydriasis fundus camera |
| CN109893085A (en) * | 2019-04-11 | 2019-06-18 | 北京悦琦创通科技有限公司 | A kind of optical fiber imports the hand-held fundus camera of lighting source |
| CN111419176B (en) * | 2020-06-10 | 2020-10-16 | 北京青燕祥云科技有限公司 | Fundus camera with image transmission function, fundus camera system and control method thereof |
| WO2022090817A1 (en) * | 2020-11-02 | 2022-05-05 | C-Mer Rainsoptics Limited | Adaptor and method for capturing images of a retina of an eye |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172035A (en) * | 2006-10-31 | 2008-05-07 | 株式会社拓普康 | Ophthalmologic photographing apparatus |
| CN102202558A (en) * | 2008-10-16 | 2011-09-28 | 史提芬·维杜纳 | Apparatus and method for imaging the eye |
| US8132911B2 (en) * | 2007-07-26 | 2012-03-13 | The United States Of America As Represented By The Department Of Health And Human Services | Fundus photo-stimulation system and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7048379B2 (en) * | 2003-03-17 | 2006-05-23 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Imaging lens and illumination system |
| JP4047255B2 (en) * | 2003-09-25 | 2008-02-13 | 株式会社ニデック | Fundus camera |
| JP5430260B2 (en) * | 2009-07-09 | 2014-02-26 | キヤノン株式会社 | Ophthalmic imaging apparatus and ophthalmic imaging method |
| US9357920B2 (en) * | 2009-09-04 | 2016-06-07 | University Of Virginia Patent Foundation | Hand-held portable fundus camera for screening photography |
| CN102613957B (en) * | 2012-04-05 | 2014-07-30 | 深圳典邦科技有限公司 | Fundus examination equipment |
-
2012
- 2012-09-27 CN CN201210363879.7A patent/CN102871643B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172035A (en) * | 2006-10-31 | 2008-05-07 | 株式会社拓普康 | Ophthalmologic photographing apparatus |
| US8132911B2 (en) * | 2007-07-26 | 2012-03-13 | The United States Of America As Represented By The Department Of Health And Human Services | Fundus photo-stimulation system and method |
| CN102202558A (en) * | 2008-10-16 | 2011-09-28 | 史提芬·维杜纳 | Apparatus and method for imaging the eye |
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|---|---|
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Inventor after: Lai Ming Inventor after: Wang Ningli Inventor after: Zhang Jinsong Inventor after: Huang Daozi Inventor after: Liu Yi Inventor after: Zhen Yi Inventor before: Lai Ming Inventor before: Wang Ningli Inventor before: Zhang Jinsong |
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