CN211022586U - Multifunctional portable fundus camera with three-dimensional alignment of ball cage rocker - Google Patents

Abstract

The utility model discloses a multifunctional portable fundus camera with a ball cage rocker for three-dimensional alignment, which comprises a three-dimensional alignment device and a host computer detachably arranged on the three-dimensional alignment device, wherein the three-dimensional alignment device can three-dimensionally move to adjust the host computer; the host comprises a main control system, a display screen, a combined light path, a focusing knob, an electromagnet and a wireless communicator, wherein the main control system is respectively connected with the display screen, the electromagnet and the wireless communicator; the combined light path comprises an imaging, focusing and illuminating light path, the three light paths share an eyepiece and a spectroscope, and the imaging light path is sequentially connected with an imaging adjustable zoom lens group and a photosensitive CCD; the focusing light path is aligned and then sequentially connected with the movable reflector, the split image focusing adjustable zoom lens group, the fixation lamp, the split image screen, the double-point positioning hole and the infrared light, and the focusing light path is aligned at a working distance and focused at a split image; the lighting light path is sequentially connected with the reflector and the flash lamp. The utility model discloses it is small, stability is high, the precision is high, support artificial intelligence auxiliary diagnosis, be suitable for the diagnosis treatment to the eye bottom disease.

Description

Multifunctional portable fundus camera with three-dimensional alignment of ball cage rocker

Technical Field

The utility model relates to an exempt from mydriasis eye ground camera, concretely relates to take multi-functional portable eye ground camera of three-dimensional alignment of ball cage rocker belongs to intelligent medical diagnosis field.

Background

At present, the desktop fundus camera on the market is large in size, undetachable in structure, not portable, heavy (generally over 20kg), and incapable of being carried outside, so that the desktop fundus camera equipment is generally inconvenient to be dispatched to a primary hospital for general investigation or visit.

The portable fundus camera on the market is too simple and small, so that the portable fundus camera has a single function, such as a single optical function; imaging without screen preview and photo display, and using in combination with other devices (such as computer and display); the stability is difficult to maintain in the shooting process because a mechanical alignment device such as a sliding table ball cage is not available; or although the portable camera is equipped with a stand, the stand is fixedly welded and cannot move in three dimensions; the above drawbacks cause the fundus picture to have a general imaging quality that is difficult to reach or approach the level of a desktop fundus camera.

In view of the above, there is an urgent need for the emergence of an eye fundus camera that combines the advantages of both desktop and portable cameras.

Disclosure of Invention

In order to overcome the shortcoming and the not enough that exist among the prior art, the utility model aims at providing a take multi-functional portable eye ground camera of three-dimensional alignment of ball cage rocker, this camera design is retrencied, and is small, light in weight, conveniently carries, and stability is high, and is multiple functional, and it is convenient to read the piece, is fit for the relevant shooting and the diagnosis treatment of the disease of base course hospital to the eye ground, and supports the supplementary diagnosis of backstage artificial intelligence, does not lose the high accuracy of traditional eye ground camera simultaneously again, high definition, advantages such as big visual field.

The utility model provides a technical scheme that its technical problem adopted is:

the multifunctional portable fundus camera with the three-dimensional alignment of the ball cage rocker comprises a three-dimensional alignment device and a host machine detachably arranged on the three-dimensional alignment device, wherein the three-dimensional alignment device realizes the three-dimensional movement of the host machine; the host comprises a main control system, an integrated display screen, a combined light path, a focusing knob, an electromagnet and a wireless communication module, wherein the main control system is respectively connected with the display screen, the electromagnet and the wireless communication module; the combined light path comprises an imaging light path, an alignment focusing light path and an illumination light path, the three light paths share an eyepiece and a first spectroscope, and the imaging light path and the alignment focusing light path are symmetrically and conjointly arranged with each other except for a shared part; the first spectroscope in the imaging light path is sequentially connected with the imaging adjustable zoom lens group and the photosensitive CCD, and the photosensitive CCD is connected with the main control system through a circuit; the first spectroscope in the alignment focusing light path is sequentially connected with a movable reflector, a split image focusing adjustable zoom lens group, a fixed sight lamp, a split image screen, a double-point positioning hole and an infrared light source, the fixed sight lamp and the infrared light source are respectively connected with a main control system through circuits, and the alignment focusing light path supports the working distance alignment and split image focusing functions; the split image focusing adjustable zoom lens group and the imaging adjustable zoom lens group are arranged in a linkage manner, and synchronous focusing from the split image to the eye ground and from the eye ground to the photosensitive CCD can be carried out through the focusing knob; the first spectroscope in the illumination light path is sequentially connected with a second reflector and a flash light source, and the flash light source is connected with a main control system through a circuit; the focusing light path and the illumination light path are isolated by the movable reflector, and the electromagnet controls the movement of the movable reflector to enable the focusing light path or the illumination light path to be conducted.

Furthermore, the three-dimensional alignment device comprises a sliding table, a rocker with a ball cage structure and a head support bracket capable of being adjusted by lifting up and down, wherein the head support bracket and the host are vertically arranged on the sliding table and are parallel to each other; the rocker can control the three-dimensional movement of the host, the lens of the host can be adjusted to be aligned with the eyes of the testee through the rocker, and the rocker is provided with a button for taking pictures.

Further, the working distance alignment: the primary alignment of the tested eye and the host machine eyepiece lens can be completed through the movement of the rocker; the accurate alignment of the working distance is realized by aligning the double-point positioning of the focusing light path; the split image focusing: and when the two icons of the split image screen are at the same horizontal or vertical position, the split image focusing is finished.

Furthermore, when the movable reflector is positioned on the focusing light path, the lighting light path is blocked, and the focusing light path is conducted; when the movable reflector is withdrawn from the focusing light path, the focusing light path can not enter eyes, and the illumination light path is conducted.

Further, the imaging optical path is always on; the imaging light path and the other two light paths share an eyepiece through the semi-transparent and semi-reflective first spectroscope, the first spectroscope reflects incident light aligned with the focusing light path or the illuminating light path so as to enter the fundus, and meanwhile, the first spectroscope transmits the light reflected by the fundus to enter the rear half part of the imaging light path and finally images the photosensitive CCD.

Further, the master control system can use a hardware platform and an operating system of a mobile phone or a tablet computer; the host can supply power through a battery, a power adapter or a USB data line; the wireless communication module can comprise 4G \5G, Wifi and Bluetooth, and the Wifi and the Bluetooth can be connected with matched equipment; the display screen is transversely arranged on the side wall of the host, and the display interface has the function of a touch screen; the host machine is provided with a plurality of slot interfaces, including an SIM card slot, a TF card slot, a USB slot, an HDMI slot and a DC power supply/charging interface.

Furthermore, the three optical paths are arranged on the same two-dimensional plane and are arranged in parallel except for the shared part; when the three light paths are vertically arranged, the included angles between the first spectroscope, the movable reflecting plate and the second reflecting plate and the horizontal line are 30 +/-5 degrees; the included angle between the first reflector and the horizontal line and the included angle between the second spectroscope and the horizontal line are set to be 45 +/-5 degrees.

The technical problem that the utility model can solve is as follows:

(1) the sliding table of the ball cage rocker supports three-dimensional regulation and control; the fundus shooting imaging needs to be clear, and the functions of working distance calibration, fundus split image focusing, fundus illumination, fundus imaging and the like need to be provided.

(2) The device is provided with an operating system and a touch display screen. The competitive products generally do not have a display screen, need to be externally connected with a computer, and have a large screen, so that the competitive products are not portable and are heavy.

(3) Access to the network is required, either by wire or wirelessly, to support remote diagnostics, artificial intelligence interpretation, PACS system, DICOM.

(4) Three power modes are supported: battery powered, power adapter powered, or USB powered.

(5) And the display of the self-contained display screen and the display of the HDMI external display screen are supported.

(6) Can be fixed, held by hand, detached and packed in box.

The utility model discloses have desk-top eye ground camera and the two advantage of portable eye ground camera concurrently, fill a blank between the two above, the utility model discloses a support is aimed at to small and exquisite but multiple functional mobile phone platform major control system of rocker slip table three-dimensional, but the simplest necessary light path design (take the work distance to aim at and the infrared preview light path of the function is focused to the eye ground split image, flash of light illumination light path, formation of image light path of shooing), the touch display screen that the size is suitable (about 6 cun), detachable construction is equipped with rechargeable battery and abundant wireless network interface.

The utility model discloses thereby can aim at through support and rocker and stabilize the shooting, can dismantle again handheld shooting down, host computer and accessory are detachable construction, can place and carry in the suitcase.

From optical function and performance, the utility model discloses surpass general handheld eye ground camera, possess the working distance location and the focus function of the eye ground split image, have great angle of vision, less pupil diameter, high resolution eye ground formation of image.

From the volume size weight, the utility model discloses small and exquisite light than desk-top eye ground camera, weight is steerable within 8kg, and volume parameter establishes to be within 22cm long, wide 8cm (widest department screen 17cm), height 30 cm.

From the service environment, the utility model discloses a built-in rechargeable battery of machine can not rely on external power source to carry out work.

From external interface, the utility model provides an abundant external interface satisfies the wireless network and inserts the connection function with the peripheral hardware, can realize the input management of patient's information, show the diagnostic result, browse the hardware support of functions such as historical information. The utility model discloses can integrate 4G/5G, WIFI, bluetooth, can solve most machines and need rely on wired LAN's problem. If a wired local area network is needed, the USB-to-Ethernet module can be externally connected through the USB slot.

Drawings

Fig. 1 is the overall appearance of the utility model: (a) a perspective view; (b) a side view;

FIG. 2 is a schematic view of a head rest;

FIG. 3 is a schematic diagram of the optical path;

FIG. 4 is a schematic diagram of the working distance alignment and split image focusing optical path;

FIG. 5 is a schematic diagram of the dual-point positioning effect;

FIG. 6 is a schematic diagram of split image focusing effect: (a) the split image is not focused; (b) finishing split image focusing;

FIG. 7 is a schematic view of the illumination path;

FIG. 8 is a schematic diagram of the imaging optical path;

FIG. 9 is a schematic diagram of the internal structure of the host;

wherein, the head support is 1-1, the host machine is 1-2, the sliding table is 1-3, and the rocker is 1-4;

the system comprises an eyepiece 2-1, a first reflector 2-2, a first spectroscope 2-3, an imaging adjustable zoom lens group 2-4, a photosensitive CCD2-5, a movable reflector 2-6, a split image focusing adjustable zoom lens group 2-7, a fixation lamp 2-8, a split image screen and double-point positioning hole 2-9, an infrared light source 2-10, a second reflector 2-11, a flash light source 2-12 and a second spectroscope 2-13;

3-1 parts of electromagnet, 3-2 parts of focusing knob, 3-3 parts of display screen, 3-4 parts of battery bin, 3-5 parts of slot area, 3-6 parts of photosensitive CCD (charge coupled device) board and 3-7 parts of main control SOC (system on chip).

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1, the multifunctional portable fundus camera with a ball cage rocker three-dimensional alignment of the present embodiment includes a main body 1-2, and a three-dimensional alignment device and a power adapter, on which the main body 1-2 is detachably mounted.

The three-dimensional alignment device comprises a sliding table 1-3, a rocker 1-4 with a ball cage structure and a head support bracket 1-1 capable of being adjusted in an up-down lifting mode, wherein the head support bracket 1-1 and a host 1-2 are vertically arranged on the sliding table 1-3, and the head support bracket 1-1 and the host 1-2 are arranged in parallel; the rocking bar 1-4 can control the host 1-2 to move three-dimensionally, the rocking bar 1-4 has a ball cage structure, the middle has a rotatable cylinder wall, the top has a button for taking pictures, specifically: the positions of the lens of the host 1-2 and the eyes of the person to be examined can be adjusted by the rocker 1-4, the rocker 1-4 can be pushed to directly control the movement of the host 1-2 in the front-back and left-right directions, and in addition, the vertical height adjustment of the host 1-2 can be controlled by the rotary cylinder wall on the rocker 1-4; the three-dimensional adjustment range of the main body 1-2 is set within 90mm in the left-right direction, within 60mm in the front-back direction, and within 30mm in the up-down direction.

If the height difference between the human eyes and the lens of the host 1-2 is large, the chin rest knob on the head rest bracket 1-1 is adjusted firstly, as shown in figure 2, the adjustable range of the upper and lower chin rests is set within 60mm, and the adjustable range of the vertical distance between the chin rest and the ocular lens is set to be 55-145 mm.

The weight of the multifunctional portable fundus camera with the three-dimensional alignment of the ball cage rocker of the embodiment is about 5-8 kg.

The host 1-2 can be detached from the sliding table 1-3 for independent use, and can be shot by hand to be applied to some special scenes; other components can be detached and put into suitcases, bags and boxes, which is convenient for carrying, transferring, installing and evacuating.

The host 1-2 is internally provided with a touch display screen 3-3, an internal combined light path, an external focusing knob 3-2, an electromagnet 3-1 motor, a light sensing plate, a main control board, a wireless communication module, an external slot interface, a rechargeable battery and the like.

As shown in fig. 3, the combined optical path in the main unit 1-2 includes an imaging optical path, an alignment focusing optical path and an illumination optical path, which are sequentially arranged from left to right, and the three optical paths are located on the same two-dimensional plane, so as to achieve the effects of reducing the volume and flattening the body.

The three optical paths share an eyepiece 2-1, a first reflector 2-2 and a first beam splitter 2-3 (the illumination optical path, the focusing optical path and the imaging optical path are respectively the reflection part and the transmission part). Both the imaging optical path and the focusing optical path are symmetrically conjugated except for the portions common to each other. Preferably, the other portions of the three optical paths are parallel to each other except for the portions common to each other.

According to the principle that the light reflection incident angle is equal to the reflection angle, under the structure that three light paths are vertically arranged, the included angle between the first beam splitter 2-3, the movable reflecting plate 2-6 and the second reflecting plate 2-11 and the horizontal line is 30 +/-5 degrees; the included angle between the first reflector 2-2 and the second spectroscope 2-13 and the horizontal line is set to be 45 +/-5 degrees.

The focusing light path and the imaging light path are aligned and have symmetry. The main body is as follows: the position of the photosensitive CCD2-5 in the imaging light path is consistent with or symmetrical to the position of the split image screen in the focusing light path. In the focusing light path and the imaging light path, there is a binding-linked adjustable zoom lens group (split image focusing adjustable zoom lens group 2-7 and imaging adjustable zoom lens group 2-4), and when the external focusing knob 3-2 is rotated, both of them can move up or down at the same time. The two linked adjustable focusing lens sets also keep the consistency of the adjusting light paths of the two adjustable focusing lens sets, so that the image of the illumination light path on the fundus can be clearly imaged on the photosensitive CCD2-5 after the split image light spot is clearly imaged on the fundus and the image of the illumination light path on the fundus returns through the imaging light path.

As shown in FIG. 4, the focusing alignment light path comprises an infrared light source 2-10, a split image screen, a double-point positioning hole 2-9, a fixation lamp 2-8, a split image focusing adjustable zoom lens group 2-7, a movable reflector 2-6, a first spectroscope 2-3, a first reflector 2-2, an eyepiece 2-1 and other lenses which are arranged in sequence, an infrared L ED lamp emits light rays to enter the fundus oculi and return to a fundus oculi preview image, meanwhile, the position of a double point L ED on the fundus oculi is displayed to judge whether the working distance is aligned, and a mark line or block of the split image screen is displayed to judge whether the fundus oculi focuses successfully.

The focusing light path integrates the functions of working distance alignment and split image focusing, and the functions are as follows:

the infrared light source can be projected on the retina of the eye ground after passing through the two-point positioning holes at the two sides of the split image screen, if the incident light rays at the two points are opposite to the eye ground, the two bright points projected on the eye ground can be reflected back according to the original path and displayed at the middle position of the eye ground image. If the two points are deviated, the two reflected points are deviated; if too close or too far apart, the two points of the shot may be too far apart or too small. According to the method, whether the lens is aligned with the pupil or not and whether the distance between the lens and the pupil accords with the preset working distance or not can be judged. The alignment of the working distance of the eyes of the examiners is finished through the rocking bars 1-4, and the effect is shown in figure 5. The display screen 3-3 displays the fundus image at the moment, and if the two reflection bright spots are in the boxes in the figure, the distance between the lens of the ocular lens 2-1 and the eye at the moment meets the working distance requirement, and the lens is aligned with the pupil of the eye.

FIG. 6 is a schematic view of split image focusing effect, which is to move the split image focusing adjustable zoom lens set 2-7 and the imaging adjustable zoom lens set 2-4 simultaneously by adjusting the focusing knob 3-2 on the host 1-2 to focus the retina, and when the split image is at the same horizontal or vertical position, it indicates that the split image focusing is completed.

As shown in FIG. 7, the illumination light path comprises an illumination L ED lamp and other lenses, specifically, a flash lamp source 2-12, a second reflector 2-11, a first spectroscope 2-3, a first reflector 2-2 and an eyepiece 2-1 which are connected in sequence.

The design of the illumination light path mainly ensures that the eyeground can be completely covered, the brightness is uniformly distributed, and the overbrightness and the overdarkness of certain aureoles of the eyeground are avoided. As the light source, white light, green light, or the like may be used. The intensity of the flash light is controlled within the range of safety and less stimulation of human eyes.

After focusing is finished, a shooting button is pressed, an illumination program is triggered, the movable reflector 2-6 is pulled upwards by the electromagnet 3-1 or the motor to achieve the effects of cutting off the fundus preview and aligning to a focusing light path and conducting the illumination light path, the flash lamp source 2-12 (namely a white L ED flash lamp) is turned on at the moment, light rays are projected to the fundus through the illumination light path, and the light rays reflected by the fundus are used by an imaging light path.

As shown in fig. 8, the imaging optical path includes a focus-adjustable lens group, and other lenses, specifically: the imaging adjustable zoom lens group comprises a photosensitive CCD2-5, an imaging adjustable zoom lens group 2-4, a first spectroscope 2-3, a first reflector 2-2 and an ocular lens 2-1 which are connected in sequence. The imaging light path receives fundus information which is reflected back after light emitted by the focusing light path or the illumination light path passes through the fundus, and finally images on the light sensing plate.

As the imaging adjustable zoom lens group 2-4 and the split image focusing adjustable zoom lens group 2-7 in the focusing light path adopt synchronous linkage measures, and the focusing light path and the imaging light path are symmetrically designed, the symmetrical imaging light path can focus and image on the light sensing plate after the split images are aligned. When the photographing button is pressed, the main control program sets a certain exposure time, the photosensitive CCD board 2-5 converts the optical signal returned from the eyeground into an electric signal and transmits the electric signal to the main control processor, and the main control processor converts the acquired electric signal into image data and displays the image on the liquid crystal display screen 3-3. The photosensitive device can adopt a CCD with 1000 ten thousand pixels to support high-definition imaging.

The focusing light path and the imaging light path are aligned, the respective adjustable zoom lens groups realize synchronous linkage through the device, and the focusing of the browsed images is successful while the focusing of the imaging light path is also successful. The adjustable zoom lens group can realize the movement of the adjusting position through a focusing knob 3-2 outside the main machine 1-2, and the adjusting travel range can be 1-3 cm.

The focusing light path and the illumination light path are isolated by a movable reflector 2-6. When the movable reflector 2-6 is on the focusing light path, the lighting light path is blocked, and the focusing light path is conducted; when the movable reflector 2-6 moves out of the focusing light path, the focusing light path can not enter eyes, and the illumination light path is conducted. The movable reflector 2-6 is driven to move by the electromagnet 3-1 or a motor.

The imaging light path is always conducted, and the imaging light path and the other two light paths share the ocular lens 2-1 part through a semitransparent and semi-reflecting first spectroscope 2-3. The first spectroscope 2-3 reflects the incident light directed to the focusing light path and the illumination light path, and the light reflected back through the fundus enters the rear half imaging light path and finally images the light-sensing plate.

A second reflector 2-2 can be placed behind the ocular 2-1 to adjust the position layout of the rear light path.

As shown in fig. 9, the internal structure of the main machine 1-2 comprises a main control part, an electric part, a focusing knob 3-2, a display screen 3-3, a battery part, a slot area 3-5, a wireless communication module and a photosensitive CCD plate 3-6;

the main control part can use a hardware platform and an operating system of a mobile phone or a tablet personal computer, such as an ARM mobile phone hardware platform and an android system, other competitive products generally use a simple embedded system, or a complex and bulky X86 processor and a Windows operating system, the main control part is set as a main control SOC board 3-7 in the embodiment, and the main control board is connected and controlled with a photosensitive Sensor, a touch display screen 3-3, an electromagnet, a fixation lamp 2-8, an infrared lamp panel, an illuminating lamp, a battery bin and an external slot component through cables.

The electric part is an electromagnet 3-1 driven by a super capacitor and can also be a motor, and the electric part is used for removing the movable reflector 2-6 through an electric signal before shooting after the fundus split image focusing is finished and giving way to the illumination light path so as to be used when the fundus is shot. The electromagnet 3-1 is connected with the movable reflector 2-6, the electromagnet 3-1 is attracted by electromagnetic force to move upwards when the capacitor discharges, the movable reflector 2-6 is driven at the same time, after the discharge, the electromagnetic force disappears, the lighting process of the lighting light path is finished, and the movable reflector 2-6 returns to the original position under the tension of the spring to prepare for focusing the next fundus split image.

The focusing knob 3-2 is connected with the linkage adjustable zoom lens group in the combined light path, and the focusing knob 3-2 simultaneously adjusts the split image focusing adjustable zoom lens group and the adjustable zoom lens group in the imaging light path through a linkage device so as to simultaneously focus split images and images. It may be a mechanical structure or a rotary encoder.

With respect to the display 3-3, other prior art products either display separately through an external computer or display screen or integrate a larger display screen into the body, thereby making the body bulky. The display screen of the embodiment adopts a high-resolution 720P display screen with 5.5 inches to present fundus photos, the display interface has a touch screen function, the fundus photos of each photographed person can be browsed, and the photographing button can be clicked to trigger photographing. The touch display screen can be transversely placed, so that the use habit of an operator can be met, and the touch display screen is comfortable visually. The device can also be vertically placed, so that the volume can be further reduced, and the device is more exquisite.

The battery part is arranged in the main machine 1-2 body and can be set as a rechargeable battery, so that the disassembly and replacement are convenient, and the charging can be carried out by matching with a seat.

The slot area 3-5 is arranged at the bottom of the outer side of the host 1-2 and comprises a slot interface including a SIM card slot, a TF card slot, a USB (Type-C) slot, an HDMI slot and a round-head DC charging interface. And the SIM card slot is used for inserting a mobile phone or a data card, so that the equipment can be connected into a 4G/5G network and is accessed into the artificial intelligence background image information processing service. The TF card slot is connected with the mobile memory card, so that the information storage capacity of the host can be enlarged, and a user can enjoy larger picture storage space. The USB slot, micro USB or Type-C, can be used to file transfer, charge, the debugging of developer, also can external USB changes ethernet module to insert inside LAN, and USB slot connection USB data line (can charge and transmit data), also can connect OTG equipment, is used for external USB equipment (USB peripheral hardware such as USBHUB, USB flash disk, USB changes ethernet device). The HDMI slot supports the simultaneous projection of images onto a large computer display screen for viewing to obtain direct observation of image details. The DC power supply/charging interface can be connected with a power adapter for converting alternating current (110V-220V) into direct current (5V or 12V, 1-3A), can charge a battery, and can enable the host 1-2 to work in a power supply state of the power adapter.

The wireless communication module can include 4G/5G, wifi, bluetooth module, and bluetooth can link some corollary equipment, such as ID card reader, sweep yard rifle, printer etc.. Through WIFI or 4G/5G, a hospital diagnosis and treatment information system can be accessed, and a background artificial intelligent diagnosis and treatment network can also be accessed to acquire a pathological change screening result of the fundus image. The wireless communication module can be integrated in the main control SOC boards 3-7 and can also be integrated on the main control expansion circuit board.

The multifunctional portable fundus camera with the three-dimensional alignment of the ball cage rocker is used for photographing diagnosis, and the specific operation flow is as follows:

(1) firstly, adjusting the distance between a lens of a host 1-2 and an eyeball of a shot by a rocker 1-4, aligning and conforming to the length of a working distance; specifically, whether the working distance is met is judged by whether the double bright spots in the infrared preview image displayed on the screen are within an expected range, which is shown in fig. 5.

(2) And then the focusing knob 3-2 outside the main machine 1-2 is adjusted to make the fundus image displayed on the screen clear, which can be judged by whether the two vertical bars of the split image screen are aligned or not, as shown in fig. 6.

(3) And (3) photographing: after focusing is finished, a shooting button on a rocker 1-4 is pressed, a main control system receives an electric signal, controls the movable reflector 2-6 to move upwards, switches an illumination light path to a conducting state, controls the flash lamp source 2-12 to emit light, illuminates the eyeground at the moment, focuses and images eyeground information on the photosensitive CCD2-5 through an imaging light path, and obtains a shot image and displays the shot image on the display screen 3-3;

(4) a photographer observes the picture, or the picture is converted into Ethernet through a wireless communication module (WIFI, 4G/5G) or a USB, the Internet is accessed, the picture is connected to a background artificial intelligence platform, and remote diagnosis information of the fundus image is acquired through AI or expert diagnosis.

The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (7)

1. The multifunctional portable fundus camera with the three-dimensional alignment of the ball cage rocker is characterized by comprising a three-dimensional alignment device and a host machine detachably arranged on the three-dimensional alignment device, wherein the three-dimensional alignment device realizes the three-dimensional movement of the host machine; the host comprises a main control system, an integrated display screen, a combined light path, a focusing knob, an electromagnet and a wireless communication module, wherein the main control system is respectively connected with the display screen, the electromagnet and the wireless communication module;

the combined light path comprises an imaging light path, an alignment focusing light path and an illumination light path, the three light paths share an eyepiece and a first spectroscope, and the imaging light path and the alignment focusing light path are symmetrically and conjointly arranged except for a shared part; the first spectroscope in the imaging light path is sequentially connected with the imaging adjustable zoom lens group and the photosensitive CCD, and the photosensitive CCD is connected with the main control system through a circuit; the first spectroscope in the alignment focusing light path is sequentially connected with a movable reflector, a split image focusing adjustable zoom lens group, a fixed sight lamp, a split image screen, a double-point positioning hole and an infrared light source, the fixed sight lamp and the infrared light source are respectively connected with a main control system through circuits, and the alignment focusing light path supports the working distance alignment and split image focusing functions; the split image focusing adjustable zoom lens group and the imaging adjustable zoom lens group are arranged in a linkage manner, and synchronous focusing from the split image to the eye ground and from the eye ground to the photosensitive CCD can be carried out through the focusing knob; the first spectroscope in the illumination light path is sequentially connected with a second reflector and a flash light source, and the flash light source is connected with a main control system through a circuit; the focusing light path and the illumination light path are isolated by the movable reflector, and the electromagnet controls the movement of the movable reflector to enable the focusing light path or the illumination light path to be conducted.

2. The multifunctional portable fundus camera with a three-dimensional alignment of the rocker of the spherical cage according to claim 1, wherein said three-dimensional alignment means comprises a sliding table, a rocker with a spherical cage structure and a head support bracket which can be adjusted up and down, the head support bracket and the main frame are vertically arranged on the sliding table and are parallel to each other; the rocker can control the three-dimensional movement of the host, the lens of the host can be adjusted to be aligned with the eyes of the testee through the rocker, and the rocker is provided with a button for taking pictures.

3. The multi-functional portable fundus camera with a caged rocker three-dimensional alignment of claim 2 wherein said working distance alignment: the primary alignment of the tested eye and the host machine eyepiece lens can be completed through the movement of the rocker; the accurate alignment of the working distance is realized by aligning the double-point positioning of the focusing light path;

the split image focusing: and when the two icons of the split image screen are at the same horizontal or vertical position, the split image focusing is finished.

4. The multifunctional portable fundus camera according to any of claims 1 to 3 having three-dimensional alignment of the rocker of the ball cage, wherein when the movable reflector is in the alignment focusing optical path, the illumination optical path is blocked and the alignment focusing optical path is conducted; when the movable reflector is withdrawn from the focusing light path, the focusing light path can not enter eyes, and the illumination light path is conducted.

5. The multi-functional portable fundus camera with a ball cage rocker three-dimensional alignment according to any of claims 1-3 wherein said imaging optical path is always on; the imaging light path and the other two light paths share an eyepiece through the semi-transparent and semi-reflective first spectroscope, the first spectroscope reflects incident light aligned with the focusing light path or the illuminating light path so as to enter the fundus, and meanwhile, the first spectroscope transmits the light reflected by the fundus to enter the rear half part of the imaging light path and finally images the photosensitive CCD.

6. The multifunctional portable fundus camera with a three-dimensional alignment of a ball cage rocker according to any of claims 1-3 characterized in that said master control system can use the hardware platform and operating system of a mobile phone or tablet computer; the host can supply power through a battery, a power adapter or a USB data line; the wireless communication module can comprise 4G \5G, Wifi and Bluetooth, and the Wifi and the Bluetooth can be connected with matched equipment; the display screen is transversely arranged on the side wall of the host, and the display interface has the function of a touch screen; the host machine is provided with a plurality of slot interfaces, including an SIM card slot, a TF card slot, a USB slot, an HDMI slot and a DC power supply/charging interface.

7. The multifunctional portable fundus camera according to any one of claims 1 to 3 having a three-dimensional alignment of the rocker with a spherical cage, wherein said three optical paths are arranged on the same two-dimensional plane, being arranged parallel to each other except for the common portion; when the three light paths are vertically arranged, the included angles between the first spectroscope, the movable reflecting plate and the second reflecting plate and the horizontal line are 30 +/-5 degrees; the included angle between the first reflector and the horizontal line and the included angle between the second spectroscope and the horizontal line are set to be 45 +/-5 degrees.

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