CN111035360B - Binocular fundus camera and working method thereof - Google Patents
Binocular fundus camera and working method thereof Download PDFInfo
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- CN111035360B CN111035360B CN201911385024.2A CN201911385024A CN111035360B CN 111035360 B CN111035360 B CN 111035360B CN 201911385024 A CN201911385024 A CN 201911385024A CN 111035360 B CN111035360 B CN 111035360B
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- 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
- A61B3/14—Arrangements specially adapted for eye photography
- A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
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- 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
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
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- 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
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- 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
- A61B3/14—Arrangements specially adapted for eye photography
- A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
- A61B3/154—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for spacing
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- 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
- A61B3/14—Arrangements specially adapted for eye photography
- A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
- A61B3/156—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking
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- 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
- A61B3/14—Arrangements specially adapted for eye photography
- A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
- A61B3/156—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking
- A61B3/158—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking of corneal reflection
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Abstract
The invention has proposed a binocular eye ground camera and its work method, this binocular eye ground camera includes the outer casing, the face spacer linked with outer casing, also include the key set in outer casing, and sliding rail set and eye image acquisition device set installed in outer casing, also there are drive units which drive the eye image acquisition device set to move from side to side in the outer casing; when a key in the key group is pressed, the driving device drives the eye image acquisition device group to move leftwards or rightwards. The invention can adjust the distance between the left and right eye fundus cameras according to the different pupil distances so as to achieve the effect of matching with the pupils of human eyes.
Description
Technical Field
The invention relates to the technical field of fundus cameras, in particular to a binocular fundus camera and a working method thereof.
Background
With the development of medical level, more and more detection devices are provided for human eyes. Wherein, in the human eye examination, the eye needs to be imaged. When the fundus photographing system is used for fundus imaging, a light source is required to enter human eyes, and light reflected by the human eyes is received for imaging analysis. The distance between the left eye fundus camera and the right eye fundus camera of the existing binocular eye fundus camera is fixed, and the interpupillary distance on the face of each person is not completely equal, so that the left eye fundus camera and the right eye fundus camera with fixed distances cannot adapt to all binocular detection.
Disclosure of Invention
The invention aims to at least solve the technical problems in the prior art, and particularly innovatively provides a binocular fundus camera and a working method thereof.
In order to achieve the purpose, the invention provides a binocular fundus camera, which comprises an outer shell, a face spacer connected with the outer shell, a key group arranged on the outer shell, a slide rail group and an eye image acquisition device group arranged in the outer shell, and a driving device group for driving the eye image acquisition device group to move left and right; when a key in the key group is pressed, the driving device drives the eye image acquisition device group to move leftwards or rightwards. The invention can adjust the distance between the left and right eye fundus cameras according to the different pupil distances so as to achieve the effect of matching with the pupils of human eyes.
In a preferred embodiment of the present invention, the key set includes a left-eye key set and a right-eye key set, the left-eye key set includes a left-eye left-shift key and a left-eye right-shift key, and the right-eye key set includes a right-eye left-shift key and a right-eye right-shift key;
the signal output end of the left-eye left-shift key is connected with the left-eye left-shift signal input end of the controller, the signal output end of the left-eye right-shift key is connected with the left-eye right-shift signal input end of the controller, the signal output end of the right-eye left-shift key is connected with the right-eye left-shift signal input end of the controller, and the signal output end of the right-eye right-shift key is connected with the right-eye right-shift signal input end of the controller;
the sliding rail set comprises a left sliding rail set and a right sliding rail set, the left sliding rail set comprises a first left guide rail and a second left guide rail which are transversely arranged, and the right sliding rail set comprises a first right guide rail and a second right guide rail which are transversely arranged;
the eye image acquisition device group comprises a left eye fundus camera and a right eye fundus camera;
the driving device group comprises a left eye driving device and a right eye driving device;
the left eye driving device left shift signal output end of the controller is connected with the left shift signal input end of the left eye driving device, the left eye driving device right shift signal output end of the controller is connected with the right shift signal input end of the left eye driving device, the right eye driving device left shift signal output end of the controller is connected with the left shift signal input end of the right eye driving device, and the right eye driving device right shift signal output end of the controller is connected with the right shift signal input end of the right eye driving device;
when a left eye left shift key is pressed, the controller inputs a control signal to a left shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move leftwards on the left guide rail I and the left guide rail II;
when a left eye right shift key is pressed, the controller inputs a control signal to a right shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move rightwards on the left guide rail I and the left guide rail II;
when a right eye left-moving key is pressed, the controller inputs a control signal to a left-moving signal input end of the right eye driving device, and the right eye driving device drives the right eye fundus camera to move leftwards on the right guide rail I and the right guide rail II;
when a right eye right shift key is pressed, the controller inputs a control signal to a right shift signal input end of the right eye driving device, and the right eye driving device drives the right eye fundus camera to move rightwards on the right guide rail I and the right guide rail II.
In a preferred embodiment of the present invention, the left fundus camera or/and the right fundus camera includes: the human eye, the objective lens, the first reflector, the second reflector, the condenser, the lighting ring, the imaging lens group and the image acquisition device are sequentially arranged from left to right;
wherein, the first reflector is provided with a hole, the second reflector is provided with a hole, and the condenser is provided with a hole;
the illumination optical system includes: the light rays emitted by the illumination ring reach human eyes after sequentially passing through the condenser lens, the first reflector, the second reflector, the hole in the first reflector and the objective lens;
wherein the first reflector is alpha to the X axis1Said α is1∈(0,π/2]The second reflecting mirror is alpha to the X axis2Said α is2∈(0,π/2]The condenser and the X axis form beta, and the beta belongs to (0, pi/2)]The objective lens and the X axis form gamma which belongs to (0, pi/2)]；
The imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device;
wherein the imaging lens group and the X axisIs gamma-shaped1Said γ is1E [0, π/2). The invention skillfully combines the fundus camera imaging system and the illumination system together, eliminates stray light, has compact structure and layout, does not waste space, achieves various optical indexes and the like.
Illumination optical system, illumination ring luminous light later through a level crossing (speculum one) and the combined action of a sphere speculum (speculum two) for light can abundant even illumination people's eye, if lack these two speculums, will certainly let the LED ring littleer, and the circle that also arranges LED is littleer promptly, also is the number reduction of LED lamp. The two reflectors (the first reflector and the second reflector) and the condenser which are used for illumination adopt the structure that the middle is provided with a hole, so that light can be integrated, converged and reflected to the eyeground, and more importantly, imaging light cannot be blocked.
In a preferred embodiment of the invention, the liquid lens is arranged in a hole in the first reflecting mirror, or/and the liquid lens is arranged in a hole in the second reflecting mirror, or/and the liquid lens is arranged in a hole in the condenser;
when the liquid lens is arranged in the hole in the first reflector, the imaging optical acquisition system comprises: imaging light rays of human eyes sequentially pass through the objective lens, the liquid lens in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device;
when the liquid lens is arranged in the hole in the second reflector, the imaging optical acquisition system comprises: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the liquid lens in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device;
when the liquid lens is set in the hole in the condenser lens, the imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the liquid lens in the collecting lens and the imaging lens group and then reach the image acquisition device. The liquid lens is used for changing the curvature of the liquid to change the focal length, and the degree of automation is high. In addition, the liquid lens is positioned within 10mm near the splicing lens group, so that light rays can better penetrate through the liquid lens, the light path is simplified and shortened, and the size is small. The combination of illumination and imaging system just inlays in the condensing lens the liquid lens the inside, and the light path of formation of image has been avoided to three lenses that punch, arranges like this, lets the small and exquisite simple and convenient of entire system structure.
In a preferred embodiment of the present invention, the optical system further comprises a third reflecting mirror, wherein the third reflecting mirror is alpha to the X axis3Said α is3∈(0,π/2](ii) a The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring and the third reflector are arranged from left to right in sequence;
the imaging optical acquisition system includes: imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the third reflector and the imaging lens group and then reaches the image acquisition device. The imaging light path direction is changed through the third reflector, the transverse light path is reduced, and the head-mounted eye fundus camera is more compact in structure.
In a preferred embodiment of the present invention, the optical system further comprises a fourth reflecting mirror, wherein the fourth reflecting mirror is alpha to the X axis4Said α is4∈(0,π/2]；
The imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the condenser, the hole in the illuminating circular ring, the third reflector, the imaging lens group and the fourth reflector and then reach the image acquisition device. The imaging light path direction is changed through the four reflectors, so that the image acquisition device can conveniently acquire fundus image information.
In a preferred embodiment of the invention, the display device further comprises a first polarizer, wherein the first polarizer is arranged in the X axis
The above-mentioned
Opening a hole on the first polarizer; from left to right, the human eye, the objective lens, the first reflector, the second reflector, the condenser, the first polarizer, the lighting ring,The imaging lens group and the image acquisition device;
the lighting system includes: the light rays emitted by the illumination ring reach human eyes after passing through the holes in the polarizing plate I, the condenser lens, the reflector I, the reflector II and the objective lens in sequence;
the imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the first polaroid, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device. The first polaroid is convenient for filtering interference light emitted by the illumination ring, and a hole in the first polaroid is convenient for the fundus to directly pass through after imaging.
In a preferred embodiment of the present invention, the display device further comprises a second polarizer, wherein the second polarizer is located on the X axis
The above-mentioned
The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring, the second polarizer, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
the imaging optical acquisition system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the second polarizing film and the imaging lens group and then reach the image acquisition device. The second polaroid is beneficial to filtering interference light entering an imaging light path, and image acquisition information is improved.
In a preferred embodiment of the present invention, the optical lens further comprises a connecting lens set, wherein the connecting lens set is beta to the X axis2Said beta is2∈(0,π/2](ii) a The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring, the connecting lens group, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
the imaging optical pickup system includes: the imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the connecting lens group and the imaging lens group and then reaches the image acquisition device. The connecting lens group is favorable for eliminating aberration and enhancing image acquisition information.
In a preferred embodiment of the present invention, the illumination ring includes a support plate, M illumination LED lamps are disposed on the support plate, M is a positive integer greater than or equal to 1, and is a 1 st illumination LED lamp, a 2 nd illumination LED lamp, a 3 rd illumination LED lamp, … …, and an M th illumination LED lamp, the i th illumination LED lamp is located on a circle having a radius R, a hole is formed in the circle having the radius R, and i is a positive integer less than or equal to M, that is, all the illumination LED lamps on the support plate form a circle. The annular LED lamp provides sufficient lighting conditions for the fundus.
In a preferred embodiment of the invention, the support plate is a support circular plate; the radius of the supporting circular plate is larger than R; the negative pole of the ith illuminating lamp is connected with the power ground, the positive pole of the ith illuminating lamp is connected with the ith signal output end of the driving module, and the ith signal input end of the driving module is connected with the ith signal output end of the controller.
In a preferred embodiment of the present invention, the first mirror, the third mirror and the fourth mirror are plane mirrors;
the reflector is a spherical reflector;
the image acquisition device is a CCD;
the holes on the first reflector, the second reflector, the condenser and the supporting circular plate are round holes.
The invention also discloses a working method of the binocular fundus camera, which comprises the following steps:
s1, wearing or holding the binocular fundus camera in front of human eyes;
s2, the controller sends an LED lamp lighting signal to the driving module, and the lighting ring is lighted;
s3, adjusting the distance between the human eye and the objective lens, including one or any combination of steps S31, S32, S33, S34, making the human eye face to the objective lens:
s31, when the controller receives a left eye left shift key pressing signal, the controller inputs a control signal to the left shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move leftwards on the first left guide rail and the second left guide rail;
s32, when the controller receives the press of the left eye right shift key, the controller inputs a control signal to the right shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move rightwards on the left guide rail I and the left guide rail II;
s33, when the controller receives the press of the right eye left shift key, the controller inputs a control signal to the left shift signal input end of the right eye driving device, and the right eye driving device drives the right eye fundus camera to move left on the right guide rail I and the right guide rail II;
and S34, when the controller receives the press of the right eye right shift key, the controller inputs a control signal to the right shift signal input end of the right eye driving device, and the right eye driving device drives the right fundus camera to move rightwards on the right guide rail I and the right guide rail II.
In conclusion, due to the adoption of the technical scheme, the fundus camera imaging system and the illumination system are ingeniously combined together, stray light is eliminated, the structure is compact in layout, and various optical indexes are achieved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a binocular fundus camera of the present invention.
Fig. 2 is a schematic diagram of an illumination optical system and an imaging optical collection system of the present invention.
Fig. 3 is a schematic view of the illumination ring structure of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The invention provides a binocular fundus camera, which comprises an outer shell, a face spacer connected with the outer shell, a key group arranged on the outer shell, a slide rail group and an eye image acquisition device group arranged in the outer shell, and a driving device group for driving the eye image acquisition device group to move left and right, wherein the face spacer takes the comfort of a human body into consideration and is fully designed into a forehead support function and a nose support function according to human engineering; when a key in the key group is pressed, the driving device drives the eye image acquisition device group to move leftwards or rightwards. In the embodiment, a handheld area for holding by hand is arranged on the outer shell or a winding belt is arranged on the outer shell, and the binocular fundus camera is worn on the head through the winding belt, so that the binocular fundus camera can be held by hand or worn on the head.
In a preferred embodiment of the present invention, the key set includes a left-eye key set and a right-eye key set, the left-eye key set includes a left-eye left-shift key and a left-eye right-shift key, and the right-eye key set includes a right-eye left-shift key and a right-eye right-shift key;
the signal output end of the left-eye left-shift key is connected with the left-eye left-shift signal input end of the controller, the signal output end of the left-eye right-shift key is connected with the left-eye right-shift signal input end of the controller, the signal output end of the right-eye left-shift key is connected with the right-eye left-shift signal input end of the controller, and the signal output end of the right-eye right-shift key is connected with the right-eye right-shift signal input end of the controller;
the slide rail group comprises a left slide rail group and a right slide rail group, as shown in fig. 1, the left slide rail group comprises a left guide rail I and a left guide rail II which are transversely and fixedly arranged, and the right slide rail group comprises a right guide rail I and a right guide rail II which are transversely and fixedly arranged; the first left guide rail and the second left guide rail are symmetrical relative to the first right guide rail and the second right guide rail.
The eye image acquisition device group comprises a left eye fundus camera and a right eye fundus camera;
the driving device group comprises a left eye driving device and a right eye driving device;
the left eye driving device left shift signal output end of the controller is connected with the left shift signal input end of the left eye driving device, the left eye driving device right shift signal output end of the controller is connected with the right shift signal input end of the left eye driving device, the right eye driving device left shift signal output end of the controller is connected with the left shift signal input end of the right eye driving device, and the right eye driving device right shift signal output end of the controller is connected with the right shift signal input end of the right eye driving device;
when a left eye left shift key is pressed, the controller inputs a control signal to a left shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move leftwards on the left guide rail I and the left guide rail II;
when a left eye right shift key is pressed, the controller inputs a control signal to a right shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move rightwards on the left guide rail I and the left guide rail II;
when a right eye left-moving key is pressed, the controller inputs a control signal to a left-moving signal input end of the right eye driving device, and the right eye driving device drives the right eye fundus camera to move leftwards on the right guide rail I and the right guide rail II;
when a right eye right shift key is pressed, the controller inputs a control signal to a right shift signal input end of the right eye driving device, and the right eye driving device drives the right eye fundus camera to move rightwards on the right guide rail I and the right guide rail II. In this embodiment, still include the wireless connection module in the shell body, the receiving and dispatching end of wireless connection module links to each other with the receiving and dispatching end of controller, and binocular fundus camera passes through the wireless connection module and sends left and right fundus image that left fundus camera and right fundus camera gathered to the high in the clouds server, and the screening as big crowd lets the user obtain the screening of fundus pathological change. The left eye driving device and the right eye driving device are of the same structure, and the structure that the left eye driving device drives the left eye fundus camera to move and the right eye driving device drives the right eye fundus camera to move is the prior art.
In a preferred embodiment of the present invention, the left fundus camera or/and the right fundus camera includes: the inner shell is internally provided with a human eye, an objective lens, a first reflector, a second reflector, a condenser, an illumination ring, an imaging lens group and an image acquisition device from left to right in sequence;
wherein, the first reflector is provided with a hole, the second reflector is provided with a hole, and the condenser is provided with a hole;
the illumination optical system includes: the light emitted by the lighting ring sequentially passes through the condenser lens, the first reflector, the second reflector, the hole in the first reflector and the objective lens and then reaches human eyes;
wherein the first reflector is alpha to the X axis1Said α is1∈(0,π/2]The second reflecting mirror is alpha to the X axis2Said α is2∈(0,π/2]The condenser is beta to the X axis, and the beta belongs to (0, pi/2)]The objective lens and the X axis form gamma which belongs to (0, pi/2)]；
The imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device; the image signal output end of the image acquisition device is connected with the image signal input end of the controller.
Wherein the imaging lens group is gamma to the X axis1Said γ is1∈[0，π/2)。
In a preferred embodiment of the invention, the liquid lens is arranged in a hole in the first reflecting mirror, or/and the liquid lens is arranged in a hole in the second reflecting mirror, or/and the liquid lens is arranged in a hole in the condenser;
when the liquid lens is arranged in the hole in the first reflector, the imaging optical acquisition system comprises: imaging light rays of human eyes sequentially pass through the objective lens, the liquid lens in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device;
when the liquid lens is arranged in the hole in the second reflector, the imaging optical acquisition system comprises: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the liquid lens in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device;
when the liquid lens is set in the hole in the condenser lens, the imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the liquid lens in the collecting lens and the imaging lens group and then reach the image acquisition device. The curvature signal control input end of the liquid lens is connected with the curvature signal control output end of the controller.
Wherein, install liquid lens in the hole in speculum one, install liquid lens in the hole in speculum two, imaging optical acquisition system includes: imaging light of human eyes sequentially passes through the objective lens, the liquid lens in the first reflector, the liquid lens in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reaches the image acquisition device.
Installing a liquid lens in a hole in the first reflector and a liquid lens in a hole in the condenser, the imaging optical acquisition system comprising: imaging light rays of human eyes sequentially pass through the objective lens, the liquid lens in the first reflector, the hole in the second reflector, the liquid lens in the condenser, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device.
Installing a liquid lens in a hole in the second reflector and a liquid lens in a hole in the condenser, the imaging optical acquisition system comprising: imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the liquid lens in the second reflector, the liquid lens in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reaches the image acquisition device.
Installing a liquid lens in a hole in the first mirror, installing a liquid lens in a hole in the second mirror, installing a liquid lens in a hole in the condenser, the imaging optical acquisition system comprising: imaging light of human eyes sequentially passes through the objective lens, the liquid lens in the first reflector, the liquid lens in the second reflector, the liquid lens in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reaches the image acquisition device.
In a preferred embodiment of the present invention, the optical device further comprises a third reflecting mirrorThe third reflector is alpha to the X axis3Said α is3∈(0,π/2](ii) a The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring and the third reflector are arranged from left to right in sequence;
the imaging optical pickup system includes: imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the third reflector and the imaging lens group and then reaches the image acquisition device.
In a preferred embodiment of the present invention, the display device further comprises a fourth reflecting mirror, wherein the fourth reflecting mirror is alpha to the X axis4Said α is4∈(0,π/2]；
The imaging optical pickup system includes: imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the third reflector, the imaging lens group and the fourth reflector and then reaches the image acquisition device.
In a preferred embodiment of the invention, the display device further comprises a first polarizer, wherein the first polarizer is arranged in the X axis
The above-mentioned
Opening a hole on the first polarizer; the human eye, the objective lens, the first reflector, the second reflector, the condenser, the first polarizer, the lighting ring, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
the illumination system includes: the light rays emitted by the illumination ring reach human eyes after passing through the holes in the polarizing plate I, the condenser lens, the reflector I, the reflector II and the objective lens in sequence;
the imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the first polaroid, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device.
In a preferred embodiment of the present invention, the display device further comprises a second polarizer, wherein the second polarizer is aligned with the X-axisIs like
The above-mentioned
The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring, the second polarizer, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
the imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the second polarizing film and the imaging lens group and then reach the image acquisition device.
In a preferred embodiment of the present invention, the optical lens further comprises a connecting lens set, wherein the connecting lens set is beta to the X axis2Said beta is2∈(0,π/2](ii) a The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring, the connecting lens group, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
the imaging optical acquisition system includes: the imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the connecting lens group and the imaging lens group and then reaches the image acquisition device.
In a preferred embodiment of the present invention, as shown in fig. 3, the illumination ring includes a support plate, M illumination LED lamps are disposed on the support plate, where M is a positive integer greater than or equal to 1, and is a 1 st illumination LED lamp, a 2 nd illumination LED lamp, a 3 rd illumination LED lamp, … …, and an M th illumination LED lamp, respectively, an ith illumination LED lamp is located on a circle having a radius R, and a hole is formed in the circle having the radius R, and i is a positive integer less than or equal to M, that is, all the illumination LED lamps on the support plate form a circle. In the present embodiment, the number of the illumination LED lamps provided on the support plate is 30.
In a preferred embodiment of the invention, the support plate is a support circular plate; the radius of the supporting circular plate is larger than R;
the negative pole of the ith illuminating lamp is connected with the power ground, the positive pole of the ith illuminating lamp is connected with the ith signal output end of the driving module, and the ith signal input end of the driving module is connected with the ith signal output end of the controller.
In a preferred embodiment of the present invention, the first mirror, the third mirror and the fourth mirror are plane mirrors;
the reflector is a spherical reflector;
the image acquisition device is a CCD;
the holes on the first reflector, the second reflector, the condenser and the supporting circular plate are round holes.
In this embodiment, a hole is formed in the first reflecting mirror, a hole is formed in the second reflecting mirror, a hole is formed in the collecting mirror, and a hole is formed in the first polarizing plate; and a hole in the illumination ring; the shape and size of the holes are set according to actual requirements, and are not described in detail herein.
As shown in fig. 2, the left fundus camera (right fundus camera) includes: the inner shell is internally provided with a human eye, an objective lens, a first reflecting mirror, a second reflecting mirror, a collecting mirror, a first polarizing film, an illuminating ring, a second polarizing film, a connecting mirror group and a third reflecting mirror from left to right in sequence, and an imaging mirror group and a fourth reflecting mirror are arranged below the reflecting mirrors in sequence; the distance between the components is set according to actual conditions.
Wherein, a hole is formed on the first reflecting mirror, a hole is formed on the second reflecting mirror, a hole is formed on the collecting mirror, and the liquid lens is arranged in the hole in the collecting mirror; opening a hole on the first polarizer;
the illumination optical system includes: the light rays emitted by the illumination ring sequentially pass through the polarizing plate I, the condenser lens, the reflector I, the reflector II, the hole in the reflector I and the objective lens and then reach human eyes;
the imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflecting mirror, the hole in the second reflecting mirror, the liquid lens in the collecting mirror, the hole in the first polarizing film, the hole in the illuminating ring, the second polarizing film, the connecting lens group, the third reflecting mirror, the imaging lens group and the fourth reflecting mirror and then reach the image acquisition device. In the present embodiment, α1＝π/2，α2＝π/2，α3＝π/4，α4＝π/4，β＝π/2，γ＝π/2，
γ1＝0，β2Pi/2. Wherein the included angle is a smaller angle with the X-axis.
The invention also discloses a working method of the binocular fundus camera, which comprises the following steps:
s1, wearing or holding the binocular fundus camera in front of human eyes;
s2, the controller sends an LED lamp lighting signal to the driving module, and the lighting ring is lighted;
s3, adjusting the distance between the human eye and the objective lens, including one or any combination of steps S31, S32, S33, S34, making the human eye face to the objective lens:
s31, when the controller receives a left eye left shift key pressing signal, the controller inputs a control signal to the left shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move leftwards on the first left guide rail and the second left guide rail;
s32, when the controller receives the press of the left eye right shift key, the controller inputs a control signal to the right shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move rightwards on the left guide rail I and the left guide rail II;
s33, when the controller receives the press of the right eye left shift key, the controller inputs a control signal to the left shift signal input end of the right eye driving device, and the right eye driving device drives the right fundus camera to move left on the right guide rail I and the right guide rail II;
and S34, when the controller receives the press of the right eye right shift key, the controller inputs a control signal to the right shift signal input end of the right eye driving device, and the right eye driving device drives the right fundus camera to move rightwards on the right guide rail I and the right guide rail II. In this embodiment, the method further includes steps S4 and S4, after the distance between the human eye and the objective lens is adjusted to the right position, the controller sends a control command to the liquid lens to control the liquid lens to change the focal length by the curvature, so that the image capturing device on the left fundus camera captures left eye fundus image information, and the image capturing device on the right fundus camera captures right eye fundus image information more clearly and completely.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (13)
1. A binocular fundus camera comprises an outer shell and a face spacer connected with the outer shell, and is characterized by further comprising a key set arranged on the outer shell, a slide rail set and an eye image acquisition device set which are arranged in the outer shell, and a driving device set for driving the eye image acquisition device set to move left and right is further arranged in the outer shell;
the key set comprises a left eye key set and a right eye key set, the left eye key set comprises a left eye left shift key and a left eye right shift key, and the right eye key set comprises a right eye left shift key and a right eye right shift key;
the signal output end of the left-eye left-shift key is connected with the left-eye left-shift signal input end of the controller, the signal output end of the left-eye right-shift key is connected with the left-eye right-shift signal input end of the controller, the signal output end of the right-eye left-shift key is connected with the right-eye left-shift signal input end of the controller, and the signal output end of the right-eye right-shift key is connected with the right-eye right-shift signal input end of the controller;
the sliding rail set comprises a left sliding rail set and a right sliding rail set, the left sliding rail set comprises a first left guide rail and a second left guide rail which are transversely arranged, and the right sliding rail set comprises a first right guide rail and a second right guide rail which are transversely arranged;
the eye image acquisition device group comprises a left eye fundus camera and a right eye fundus camera; the left fundus camera or/and the right fundus camera includes: the human eye, the objective lens, the first reflector, the second reflector, the condenser, the lighting ring, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
wherein, a hole is formed on the first reflecting mirror, a hole is formed on the second reflecting mirror, and a hole is formed on the collecting mirror;
the illumination optical system includes: the light rays emitted by the illumination ring reach human eyes after sequentially passing through the condenser lens, the first reflector, the second reflector, the hole in the first reflector and the objective lens;
the first reflector is a plane reflector;
the second reflecting mirror is a spherical reflecting mirror;
wherein the first reflector is alpha to the X axis1Said α is1∈(0,π/2]The second reflecting mirror is alpha to the X axis2Said α is2∈(0,π/2]The condenser and the X axis form beta, and the beta belongs to (0, pi/2)]The objective lens and the X axis form gamma which belongs to (0, pi/2)]；
The imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device;
wherein the imaging lens group is gamma to the X axis1Said γ is1∈[0，π/2)；
The driving device group comprises a left eye driving device and a right eye driving device;
the left eye driving device left shift signal output end of the controller is connected with the left shift signal input end of the left eye driving device, the left eye driving device right shift signal output end of the controller is connected with the right shift signal input end of the left eye driving device, the right eye driving device left shift signal output end of the controller is connected with the left shift signal input end of the right eye driving device, and the right eye driving device right shift signal output end of the controller is connected with the right shift signal input end of the right eye driving device;
when a left eye left shift key is pressed, the controller inputs a control signal to a left shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move leftwards on the left guide rail I and the left guide rail II;
when a left eye right shift key is pressed down, the controller inputs a control signal to a right shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move rightwards on the first left guide rail and the second left guide rail;
when a right eye left-moving key is pressed, the controller inputs a control signal to a left-moving signal input end of the right eye driving device, and the right eye driving device drives the right eye fundus camera to move leftwards on the right guide rail I and the right guide rail II;
when a right eye right shift key is pressed, the controller inputs a control signal to a right shift signal input end of the right eye driving device, and the right eye driving device drives the right eye fundus camera to move rightwards on the right guide rail I and the right guide rail II.
2. The binocular fundus camera of claim 1, further comprising a liquid lens disposed in a hole in the first mirror;
when the liquid lens is arranged in the hole in the first reflector, the imaging optical acquisition system comprises: imaging light of human eyes sequentially passes through the objective lens, the liquid lens in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring and the imaging lens group and then reaches the image acquisition device.
3. The binocular fundus camera of claim 1, further comprising a liquid lens disposed in an aperture in the second mirror;
when the liquid lens is arranged in the hole in the second reflector, the imaging optical acquisition system comprises: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the liquid lens in the second reflector, the hole in the condenser lens, the hole in the illuminating ring and the imaging lens group and then reach the image acquisition device.
4. The binocular fundus camera of claim 1, further comprising a liquid lens disposed in a hole in the condenser;
when the liquid lens is set in the hole in the condenser lens, the imaging optical pickup system includes: the imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the liquid lens in the collecting lens and the imaging lens group and then reaches the image acquisition device.
5. The binocular fundus camera of claim 1, further comprising a third mirror, the third mirror being α to the X-axis3Said α is3∈(0,π/2](ii) a The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring and the third reflector are arranged from left to right in sequence;
the imaging optical pickup system includes: imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the third reflector and the imaging lens group and then reaches the image acquisition device.
6. The binocular fundus camera of claim 5, further comprising a fourth mirror, the fourth mirror being α to the X axis4Said α is4∈(0,π/2]；
The imaging optical pickup system includes: imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the third reflector, the imaging lens group and the fourth reflector and then reaches the image acquisition device.
7. The binocular fundus camera of claim 1, further comprising a first polarizer, the first polarizer being in alignment with the X-axis
The described
Opening a hole on the first polarizer; the human eye, the objective lens, the first reflector, the second reflector, the condenser, the first polarizer, the lighting ring, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
the lighting system includes: the light rays emitted by the illumination ring sequentially pass through the polarizing plate I, the condenser lens, the reflector I, the reflector II, the hole in the reflector II and the objective lens and then reach human eyes.
8. The method of claim 1The binocular fundus camera is characterized by further comprising a second polarizing film, wherein the second polarizing film is arranged along the X axis
The above-mentioned
The human eye, the objective lens, the first reflecting mirror, the second reflecting mirror, the condenser lens, the illuminating ring, the second polarizing film, the imaging lens group and the image acquisition device are sequentially arranged from left to right;
the imaging optical pickup system includes: imaging light rays of human eyes sequentially pass through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the second polarizing film and the imaging lens group and then reach the image acquisition device.
9. The binocular fundus camera of claim 1, further comprising a relay lens group β to the X-axis2Said beta is2∈(0,π/2](ii) a The human eye, the objective lens, the first reflector, the second reflector, the condenser, the illuminating ring, the connecting lens group, the imaging lens group and the image acquisition device are arranged from left to right in sequence;
the imaging optical pickup system includes: the imaging light of human eyes sequentially passes through the objective lens, the hole in the first reflector, the hole in the second reflector, the hole in the collecting lens, the hole in the illuminating ring, the connecting lens group and the imaging lens group and then reaches the image acquisition device.
10. The binocular fundus camera of claim 1, wherein the illumination ring includes a support plate on which M illumination LED lamps are disposed, the M being a positive integer greater than or equal to 1 and being respectively a 1 st illumination LED lamp, a 2 nd illumination LED lamp, a 3 rd illumination LED lamp, … …, an M th illumination LED lamp, the i th illumination LED lamp being located on a circle having a radius R, the i being a positive integer less than or equal to M in a circle having a radius R, i.e., all the illumination LED lamps on the support plate constitute a circle.
11. The binocular fundus camera of claim 10, wherein the support plate is a support circular plate; the radius of the supporting circular plate is larger than R;
the negative pole of the ith illuminating lamp is connected with the power ground, the positive pole of the ith illuminating lamp is connected with the ith signal output end of the driving module, and the ith signal input end of the driving module is connected with the ith signal output end of the controller.
12. The binocular fundus camera of claim 6, wherein mirror three and mirror four are planar mirrors;
the image acquisition device is a CCD;
the holes on the first reflector, the second reflector, the condenser and the supporting circular plate are round holes.
13. A method of operating a binocular fundus camera according to any one of claims 1 to 12 including the steps of:
s1, wearing or holding the binocular fundus camera in front of human eyes;
s2, the controller sends an LED lamp lighting signal to the driving module, and the lighting ring is lighted;
s3, adjusting the distance between the human eye and the objective lens, including one or any combination of steps S31, S32, S33, S34, making the human eye face to the objective lens:
s31, when the controller receives a left eye left shift key pressing signal, the controller inputs a control signal to the left shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move leftwards on the first left guide rail and the second left guide rail;
s32, when the controller receives the press of the left eye right shift key, the controller inputs a control signal to the right shift signal input end of the left eye driving device, and the left eye driving device drives the left eye fundus camera to move rightwards on the left guide rail I and the left guide rail II;
s33, when the controller receives the press of the right eye left shift key, the controller inputs a control signal to the left shift signal input end of the right eye driving device, and the right eye driving device drives the right fundus camera to move left on the right guide rail I and the right guide rail II;
and S34, when the controller receives the press of the right eye right shift key, the controller inputs a control signal to the right shift signal input end of the right eye driving device, and the right eye driving device drives the right fundus camera to move rightwards on the right guide rail I and the right guide rail II.
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