A compact ophthalmic examination adapter that is easy to disassemble

Abstract

The utility model relates to a compact ophthalmic examination adapter convenient to dismount, including installation shell, installation shell is U type, form the U type clamping groove for cooperation installation with mobile phone on installation shell, the inside of installation shell is hollow, form first installation cavity and second installation cavity respectively on both sides of U type clamping groove, cooperation installation has first control module in first installation cavity, and with the LED lamp group of first control module electricity is connected, cooperation installation still has the macro lens in first installation cavity, and the LED lamp group surrounds macro lens and evenly distributes along the circumference, cooperation installation has second control module in second installation cavity, and second control module is connected with first control module electricity. Can cooperate with the photograph of smart mobile phone to human eye, and its structure is compact, and it is convenient to carry and dismounts conveniently.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a compact ophthalmic examination adapter that is easy to assemble and disassemble. Background Technology

[0002] Ophthalmologists commonly rely on desktop examination equipment (such as slit-lamp microscopes, optical coherence tomography (OCT) scanners, and fundus cameras) to obtain high-resolution images of patients' ocular lesions. In current technology, the design logic of traditional desktop equipment for ophthalmic image acquisition focuses on high-precision imaging and clinical-grade stability. However, traditional desktop equipment is bulky, not portable, and requires specific installation environments, making it unsuitable for ophthalmic screening in remote areas, and for postoperative examinations of bedridden patients, patients in postoperative recovery, or individuals with mobility impairments. Utility Model Content

[0003] To address the shortcomings of the existing manufacturing technology, the applicant provides a compact ophthalmic examination adapter that is easy to assemble and disassemble. By incorporating an LED light group, a macro lens, a first control module, a second control module, and a mounting shell, it can take pictures of the human eye in conjunction with a smartphone. Its compact structure makes it easy to carry and assemble and disassemble, making it suitable for ophthalmic screening in remote areas, as well as for postoperative examinations of bedridden patients, patients in the postoperative recovery period, or people with mobility impairments.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A compact ophthalmic examination adapter that is easy to assemble and disassemble includes a mounting shell, the mounting shell being U-shaped, thereby forming a U-shaped clamping groove on the mounting shell for mounting with a mobile phone, and the interior of the mounting shell being hollowed out, thereby forming a first mounting cavity and a second mounting cavity on both sides of the U-shaped clamping groove, respectively.

[0006] The first mounting cavity is fitted with a first control module and an LED light group electrically connected to the first control module. The first mounting cavity is also fitted with a macro lens, and the LED light group is evenly distributed around the macro lens along the circumference.

[0007] A second control module is installed inside the second mounting cavity, and the second control module is electrically connected to the first control module.

[0008] By aligning the macro lens with the phone's camera, the first and second control modules drive and control the LED light group to emit light, thereby providing supplementary lighting when the phone's camera takes a picture through the macro lens, and thus completing image acquisition through the phone.

[0009] As a further improvement to the above technical solution:

[0010] The structure of the first control module is as follows: it includes a first mounting plate that is installed parallel to and spaced apart from the inner wall surface of the first mounting cavity, a first PCB board that is installed between the first mounting plate and the inner wall surface of the first mounting cavity, the first PCB board that is arranged parallel to and spaced apart from the inner wall surface of the first mounting cavity, and several support rings that are fixed on the end face of the first mounting plate, the support rings supporting the first PCB board, thereby making the first PCB board and the first mounting plate arranged parallel to and spaced apart.

[0011] An LED light group is fixed on the first mounting plate. The LED light group includes a first LED light array for emitting white light and a second LED light array for emitting blue light. The first LED light array includes several first LED lights evenly distributed along the circumference, and the second LED light array includes several second LED lights evenly distributed along the circumference. Individual first LED lights and individual second LED lights are alternately arranged in sequence.

[0012] The first LED array and the second LED array are electrically connected to the first PCB board, respectively;

[0013] Both the first mounting plate and the first PCB board have clearance holes for avoiding macro lenses.

[0014] The structure of the second control module is as follows: it includes a second mounting plate that is fitted to the inner wall of the second mounting cavity. Several positioning bushings are fixed on the end face of the second mounting plate. The second mounting plate is installed parallel to the second PCB board at intervals through the positioning bushings. A power supply battery is disposed between the second PCB board and the second mounting plate. The power supply battery is fitted to the second mounting plate. Several battery limiting plates are fixed on the end face of the second mounting plate. The power supply battery is limited and fixed by the battery limiting plates. The power supply battery is electrically connected to the second PCB board, thereby supplying power to the LED light group through the second PCB board.

[0015] A switching button is installed on the second PCB board. By pressing the switching button, the first LED array or the second LED array can be made to light up individually.

[0016] The inner wall of the second mounting cavity is provided with several second positioning protrusions. The second positioning protrusions correspond one-to-one with several third positioning slots opened on the second mounting plate. The second positioning protrusions also correspond one-to-one with several fourth positioning slots opened on the second PCB board. By allowing a single second positioning protrusion to be inserted into the corresponding third positioning slot and the corresponding fourth positioning slot at the same time, the second mounting plate and the second PCB board are simultaneously limited.

[0017] Several positioning shafts are provided on the inner wall surface of the second mounting cavity. Each positioning shaft corresponds to a positioning sleeve. By inserting a single positioning shaft into the corresponding positioning sleeve, the second mounting plate is limited.

[0018] The inner wall of the first mounting cavity is provided with several first positioning protrusions, each of which corresponds to a number of first positioning slots on the first mounting plate. The first positioning protrusions also correspond to a number of second positioning slots on the first PCB board. By simultaneously inserting a single first positioning protrusion into the corresponding first positioning slot and the corresponding second positioning slot, the first mounting plate and the first PCB board are simultaneously positioned.

[0019] Several support shafts are provided on the inner wall of the first mounting cavity, and the support shafts support the first PCB board, thereby realizing parallel and spaced installation between the first PCB board and the inner wall of the first mounting cavity.

[0020] An imaging hole is provided on the wall of the first mounting cavity, through which the macro lens takes pictures;

[0021] A ring-shaped mounting sleeve is fixed on the inner wall of the first mounting cavity. The mounting sleeve is arranged concentrically with the shooting hole. An internal thread is provided on the inner circular surface of the mounting sleeve. The mounting sleeve is installed with the macro lens through the internal thread, thereby adjusting the vertical distance between the macro lens and the mobile phone lens by rotating the macro lens, thereby achieving focusing.

[0022] A front cover is fitted into the first mounting cavity, and a rear cover is fitted into the second mounting cavity.

[0023] The inner wall of the first mounting cavity and the inner wall of the second mounting cavity are respectively provided with limiting protrusions distributed along the edge shape;

[0024] A limiting flange arranged in the first mounting cavity is used to limit the front cover;

[0025] The limiting flange arranged in the second mounting cavity is used to limit the rear cover.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model features a compact and reasonable structure, and is easy to operate. By incorporating an LED light group, a macro lens, a first control module, a second control module, and a mounting shell, it can be used with a smartphone to photograph the human eye. Its compact structure makes it easy to carry and assemble / disassemble, making it suitable for ophthalmic screening in remote areas, as well as for postoperative examinations of bedridden patients, patients in postoperative recovery, or people with mobility impairments.

[0028] This utility model also has the following advantages:

[0029] (1) By setting up an installation sleeve, which is connected to the macro lens by a threaded connection, the operator can remove or install the macro lens from the installation sleeve 19 without the need for complicated tools. This greatly saves time when changing different types of macro lenses and effectively improves work efficiency. At the same time, the operator can quickly focus by rotating the macro lens, which can further improve the flexibility and convenience of use.

[0030] (2) By setting the first LED array and the second LED array to surround the macro lens in a circle, the lighting can be supplemented according to the shooting needs, thereby improving the image acquisition effect.

[0031] (3) By setting a power supply battery, the ophthalmic examination adapter can achieve self-powered operation, thereby further improving the ease of use; at the same time, the second mounting plate is set to fit the inner wall of the second mounting cavity and the power supply battery is attached to the plate surface of the second mounting plate, which can improve the heat dissipation performance of the battery and ensure the working stability of the ophthalmic examination adapter.

[0032] (4) By setting anti-slip pads and anti-slip blocks, the anti-slip performance of the ophthalmic examination adapter can be improved, thereby improving the clamping stability of the U-shaped clamping slot for the mobile phone.

[0033] (5) By setting a support shaft, the first PCB board and the inner wall of the first mounting cavity can be installed at an interval, thereby reducing electromagnetic interference and avoiding short circuit problems.

[0034] (6) By setting a shooting hole, which is used to cooperate with the mobile phone lens, the problem of scratches caused by contact between the macro lens and the mobile phone lens is avoided. Attached Figure Description

[0035] Figure 1 This is the front view of the present invention.

[0036] Figure 2 for Figure 1 A sectional view of section AA in the middle.

[0037] Figure 3 This is a schematic diagram of the structure of the first control module and the second control module in this utility model.

[0038] Figure 4 for Figure 3 Exploded view.

[0039] Figure 5 This is a schematic diagram of the structure of the first mounting cavity in this utility model.

[0040] Figure 6 This is a schematic diagram of the structure of the second mounting cavity in this utility model.

[0041] The components include: 1. First LED light array; 2. Second LED light array; 3. Macro lens; 4. Anti-slip pad; 5. First control module; 6. Second control module; 7. Front cover; 8. Rear cover; 9. Mounting shell; 10. U-shaped clamping groove; 11. First mounting cavity; 12. Second mounting cavity; 13. First positioning protrusion; 14. Positioning shaft; 15. Limiting protrusion; 16. Second positioning protrusion; 17. Support shaft; 18. Shooting hole; 19. Mounting sleeve; 20. Anti-slip block; 21. Clearance groove.

[0042] 501, First mounting plate; 502, First PCB board; 503, Support ring; 504, Clearance hole; 505, First positioning groove; 506, Second positioning groove;

[0043] 601. Second mounting plate; 602. Second PCB board; 603. Positioning bushing; 604. Battery limiting plate; 605. Power supply battery; 606. Change button; 607. Third positioning slot; 608. Fourth positioning slot. Detailed Implementation

[0044] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0045] The structure and function of this utility model are as follows:

[0046] like Figures 1-6 As shown, a compact ophthalmic examination adapter that is easy to assemble and disassemble includes a mounting shell 9, which is U-shaped, forming a U-shaped clamping groove 10 for mounting with a mobile phone. The interior of the mounting shell 9 is hollowed out, forming a first mounting cavity 11 and a second mounting cavity 12 on both sides of the U-shaped clamping groove 10. A first control module 5 and an LED light group electrically connected to the first control module 5 are installed in the first mounting cavity 11. A macro lens 3 is also installed in the first mounting cavity 11, and the LED light group is evenly distributed around the macro lens 3. A second control module 6 is installed in the second mounting cavity 12 and is electrically connected to the first control module 5. By aligning the macro lens 3 with the camera of the mobile phone, the first control module 5 and the second control module 6 drive and control the LED light group to emit light, thereby providing supplementary lighting when the mobile phone camera takes pictures through the macro lens 3, and thus completing image acquisition through the mobile phone. By incorporating an LED light group, a macro lens 3, a first control module 5, a second control module 6, and a mounting shell 9, it can take pictures of the human eye in conjunction with a smartphone. Its compact structure makes it easy to carry and assemble and disassemble, making it suitable for ophthalmological screening in remote areas, as well as for postoperative examinations of bedridden patients, patients in the postoperative recovery period, or people with mobility impairments.

[0047] like Figures 3-4As shown, the structure of the first control module 5 is as follows: it includes a first mounting plate 501 installed parallel to and spaced apart from the inner wall surface of the first mounting cavity 11; a first PCB board 502 is installed between the first mounting plate 501 and the inner wall surface of the first mounting cavity 11; the first PCB board 502 is arranged parallel to and spaced apart from the inner wall surface of the first mounting cavity 11; several support rings 503 are fixed on the end face of the first mounting plate 501, and the support rings 503 support the first PCB board 502, thereby making the first PCB board 502 and the first mounting plate 501 arranged parallel to and spaced apart; an LED light group is fixed on the first mounting plate 501. The LED light assembly includes a first LED array 1 for emitting white light and a second LED array 2 for emitting blue light. The first LED array 1 includes several first LEDs evenly distributed along the circumference, and the second LED array 2 includes several second LEDs evenly distributed along the circumference. Individual first LEDs and individual second LEDs are alternately arranged. The first LED array 1 and the second LED array 2 are electrically connected to a first PCB board 502. Both the first mounting plate 501 and the first PCB board 502 have clearance holes 504 for avoiding the macro lens 3. By setting the first mounting plate 501, the LED light assembly can be stably fixed and supported. By setting the first LED array 1 and the second LED array 2 to surround the macro lens 3 in a circle, supplementary lighting can be provided according to shooting needs, improving the image acquisition effect.

[0048] like Figures 3-4 As shown, the structure of the second control module 6 is as follows: it includes a second mounting plate 601 that is fitted to the inner wall of the second mounting cavity 12. Several positioning bushings 603 are fixed on the end face of the second mounting plate 601. The second mounting plate 601 is installed parallel to the second PCB board 602 at intervals through the positioning bushings 603. A power supply battery 605 is provided between the second PCB board 602 and the second mounting plate 601. The power supply battery 605 is fitted to the second mounting plate 601. Several battery limiting plates 604 are fixed on the end face of the second mounting plate 601. The battery limiting plates 604 limit and fix the power supply battery 605. The power supply battery 605 is electrically connected to the second PCB board 602, thereby supplying power to the LED light group through the second PCB board 602. A conversion button 606 is installed on the second PCB board 602. By pressing the conversion button 606, the first LED light array 1 or the second LED light array 2 can be made to emit light individually. By incorporating a power supply battery 605, the ophthalmic examination adapter can achieve self-powered operation, thereby further improving ease of use.

[0049] In this invention, the second mounting plate 601 is fitted to the inner wall of the second mounting cavity 12, and the power supply battery 605 is fitted to the surface of the second mounting plate 601, which can improve the heat dissipation performance of the battery and ensure the working stability of the ophthalmic examination adapter.

[0050] In this utility model, such as Figures 1-2 , Figures 5-6 As shown, the mounting shell 9 is U-shaped and is clamped onto the mobile phone through the U-shaped clamping groove 10. Anti-slip pads 4 and anti-slip blocks are respectively installed on the two side walls of the U-shaped clamping groove 10. The anti-slip pads 4 have serrations on their end faces to further improve their anti-slip performance. The anti-slip blocks include two anti-slip blocks 20 spaced apart. One anti-slip block 20 is located above the shooting hole 18, and the other anti-slip block 20 is located below the shooting hole 18.

[0051] The mounting housing 9 has a first mounting cavity 11 and a second mounting cavity 12 respectively on its two vertical plane end faces. The upper part of the interior of the mounting housing 9 is provided with a cutout, which allows the first mounting cavity 11 and the second mounting cavity 12 to be connected for easy wiring. A front cover 7 is installed in the first mounting cavity 11 and a rear cover 8 is installed in the second mounting cavity 12. By setting the front cover 7 to cover the first mounting cavity 11 and the rear cover 8 to cover the second mounting cavity 12, the control module inside the mounting cavity can be protected.

[0052] like Figures 5-6 As shown, the inner wall surfaces of the first mounting cavity 11 and the second mounting cavity 12 are respectively provided with limiting protrusions 15 distributed along their edge shapes; the limiting protrusions 15 arranged in the first mounting cavity 11 are used to limit the front cover 7; the limiting protrusions 15 arranged in the second mounting cavity 12 are used to limit the rear cover 8. By providing the limiting protrusions 15, the corresponding front cover 7 and rear cover 8 can be stably supported.

[0053] In addition, the front cover 7 and the rear cover 8 are installed with the mounting shell 9 by means of a snap-fit, so that the front cover 7 and the rear cover 8 can be easily and quickly disassembled and assembled; the two vertical plane end faces of the mounting shell 9 are respectively provided with a clearance groove group, and each clearance groove group includes two symmetrically distributed clearance grooves 21. By setting the clearance grooves 21, it is convenient for users to take and disassemble the front cover 7 and the rear cover 8.

[0054] Several positioning shafts 14 are provided on the inner wall of the second mounting cavity 12. Each positioning shaft 14 corresponds to a positioning sleeve 603. By inserting a single positioning shaft 14 into its corresponding positioning sleeve 603, the second mounting plate 601 is limited in position. By providing the positioning shafts 14, the second mounting plate 601 can be reliably limited in position. At the same time, by fixing the positioning shafts 14 to their corresponding positioning sleeves 603 with threaded connectors, the second mounting plate 601 can be stably attached to the wall of the second mounting cavity 12.

[0055] Several first positioning protrusions 13 are provided on the inner wall of the first mounting cavity 11. Each first positioning protrusion 13 corresponds to a number of first positioning grooves 505 formed on the first mounting plate 501. Each first positioning protrusion 13 also corresponds to a number of second positioning grooves 506 formed on the first PCB board 502. By allowing a single first positioning protrusion 13 to be inserted into the corresponding first positioning groove 505 and the corresponding second positioning groove 506 at the same time, the first mounting plate 501 and the first PCB board 502 are simultaneously limited.

[0056] Several second positioning protrusions 16 are provided on the inner wall of the second mounting cavity 12. The second positioning protrusions 16 correspond one-to-one with several third positioning grooves 607 formed on the second mounting plate 601. The second positioning protrusions 16 also correspond one-to-one with several fourth positioning grooves 608 formed on the second PCB board 602. By allowing a single second positioning protrusion 16 to be inserted into the corresponding third positioning groove 607 and the corresponding fourth positioning groove 608 at the same time, the second mounting plate 601 and the second PCB board 602 are simultaneously limited.

[0057] By setting the first positioning protrusion 13, the second positioning protrusion 16, and the corresponding positioning groove, the first mounting plate 501, the second mounting plate 601, the first PCB board 502, and the second PCB board 602 can be accurately positioned and limited respectively, so as to prevent them from shaking in the corresponding mounting cavity and improve the structural stability.

[0058] Several support shafts 17 are provided on the inner wall of the first mounting cavity 11. The support shafts 17 support the first PCB board 502, thereby achieving parallel and spaced installation between the first PCB board 502 and the inner wall of the first mounting cavity 11. By providing the support shafts 17, spaced installation between the first PCB board 502 and the inner wall of the first mounting cavity 11 can be achieved, thereby reducing electromagnetic interference and avoiding short circuits.

[0059] A shooting hole 18 is provided on the wall of the first mounting cavity 11, through which the macro lens 3 takes pictures. A ring-shaped mounting sleeve 19 is fixed on the inner wall of the first mounting cavity 11. The mounting sleeve 19 is concentrically arranged with the shooting hole 18. An internal thread is provided on the inner circular surface of the mounting sleeve 19. The mounting sleeve 19 is installed with the macro lens 3 through the internal thread, thereby adjusting the vertical distance between the macro lens 3 and the mobile phone lens by rotating the macro lens 3, thus achieving focus. In this utility model, the inner diameter of the shooting hole 18 is smaller than the inner diameter of the mounting sleeve 19. By setting the shooting hole 18, it is used to cooperate with the mobile phone lens, avoiding the problem of scratches caused by contact between the macro lens 3 and the mobile phone lens.

[0060] By setting up the mounting sleeve 19, which is connected to the macro lens 3 by a threaded connection, the operator can remove or install the macro lens 3 from the mounting sleeve 19 without the need for complicated tools. This greatly saves time when changing different types of macro lenses 3 and effectively improves work efficiency. At the same time, the operator can quickly adjust the focus by rotating the macro lens 3, which can further improve the flexibility and convenience of use.

[0061] The working process of this utility model is as follows:

[0062] By inserting the mobile phone into the U-shaped clamping slot 10, the ophthalmic examination adapter is stably clamped onto the mobile phone under the clamping force of its U-shaped structure and the action of the anti-slip pad 4 and the anti-slip block group.

[0063] At the same time, align the phone's lens with the shooting hole 18, and quickly adjust the focus by rotating the macro lens 3. After focusing, close the front cover 7.

[0064] Subsequently, by pressing and holding the conversion button 606 (press for more than 3 seconds), the LED light array is made to light up. According to the shooting requirements, by briefly pressing the conversion button 606, the first LED light array 1 or the second LED light array 2 can be switched to light up.

[0065] Finally, eye images were captured using a mobile phone.

[0066] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A compact ophthalmic examination adapter that is easy to assemble and disassemble, characterized in that: Includes a mounting shell (9), which is U-shaped, thereby forming a U-shaped clamping groove (10) on the mounting shell (9) for mounting with a mobile phone. The interior of the mounting shell (9) is hollowed out, thereby forming a first mounting cavity (11) and a second mounting cavity (12) on both sides of the U-shaped clamping groove (10). The first mounting cavity (11) is equipped with a first control module (5) and an LED light group electrically connected to the first control module (5). The first mounting cavity (11) is also equipped with a macro lens (3). The LED light group is evenly distributed around the macro lens (3) along the circumference. The second control module (6) is installed in the second mounting cavity (12), and the second control module (6) is electrically connected to the first control module (5); By aligning the macro lens (3) with the camera of the mobile phone, the first control module (5) and the second control module (6) drive and control the LED light group to emit light, thereby providing supplementary lighting when the camera of the mobile phone takes a picture through the macro lens (3), and then completing the image acquisition through the mobile phone.

2. The compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 1, characterized in that: The structure of the first control module (5) is as follows: it includes a first mounting plate (501) that is installed parallel to and spaced apart from the inner wall surface of the first mounting cavity (11), a first PCB board (502) is installed between the first mounting plate (501) and the inner wall surface of the first mounting cavity (11), the first PCB board (502) and the inner wall surface of the first mounting cavity (11) are arranged parallel to and spaced apart, and several support rings (503) are fixed on the end face of the first mounting plate (501), the support rings (503) support the first PCB board (502), so that the first PCB board (502) and the first mounting plate (501) are arranged parallel to and spaced apart; An LED light group is fixed on the first mounting plate (501). The LED light group includes a first LED light array (1) for emitting white light and a second LED light array (2) for emitting blue light. The first LED light array (1) includes several first LED lights evenly distributed along the circumference, and the second LED light array (2) includes several second LED lights evenly distributed along the circumference. The single first LED light and the single second LED light are alternately arranged in sequence. The first LED array (1) and the second LED array (2) are electrically connected to the first PCB board (502), respectively; Both the first mounting plate (501) and the first PCB board (502) are provided with clearance holes (504) for avoiding the macro lens (3).

3. The compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 2, characterized in that: The structure of the second control module (6) is as follows: it includes a second mounting plate (601) that is fitted to the inner wall of the second mounting cavity (12). Several positioning bushings (603) are fixed on the end face of the second mounting plate (601). The second mounting plate (601) is installed parallel to the second PCB board (602) at intervals through the positioning bushings (603). A power supply battery (605) is provided between the second PCB board (602) and the second mounting plate (601). The power supply battery (605) is fitted to the second mounting plate (601). Several battery limiting plates (604) are fixed on the end face of the second mounting plate (601). The power supply battery (605) is limited and fixed by the battery limiting plates (604). The power supply battery (605) is electrically connected to the second PCB board (602), thereby supplying power to the LED light group through the second PCB board (602). A conversion button (606) is installed on the second PCB board (602). By pressing the conversion button (606), the first LED array (1) can emit light individually or the second LED array (2) can emit light individually.

4. The compact ophthalmic examination adapter for easy assembly and disassembly as described in claim 3, characterized in that: The inner wall of the second mounting cavity (12) is provided with several second positioning protrusions (16). The second positioning protrusions (16) correspond one-to-one with several third positioning grooves (607) opened on the second mounting plate (601). The second positioning protrusions (16) also correspond one-to-one with several fourth positioning grooves (608) opened on the second PCB board (602). By allowing a single second positioning protrusion (16) to be inserted into the corresponding third positioning groove (607) and the corresponding fourth positioning groove (608) at the same time, the second mounting plate (601) and the second PCB board (602) are simultaneously limited.

5. A compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 3, characterized in that: The inner wall of the second mounting cavity (12) is provided with several positioning shafts (14), and each positioning shaft (14) corresponds to a positioning sleeve (603). By inserting a single positioning shaft (14) into the corresponding positioning sleeve (603), the second mounting plate (601) is limited.

6. A compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 2, characterized in that: The inner wall of the first mounting cavity (11) is provided with several first positioning protrusions (13). Each first positioning protrusion (13) corresponds to a number of first positioning grooves (505) opened on the first mounting plate (501). Each first positioning protrusion (13) also corresponds to a number of second positioning grooves (506) opened on the first PCB board (502). By allowing a single first positioning protrusion (13) to be inserted into the corresponding first positioning groove (505) and the corresponding second positioning groove (506) at the same time, the first mounting plate (501) and the first PCB board (502) are simultaneously limited.

7. A compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 2, characterized in that: A number of support shafts (17) are provided on the inner wall surface of the first mounting cavity (11). The support shafts (17) support the first PCB board (502), thereby realizing parallel and spaced installation between the first PCB board (502) and the inner wall surface of the first mounting cavity (11).

8. A compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 2, characterized in that: An imaging hole (18) is provided on the wall of the first mounting cavity (11), and the macro lens (3) takes pictures through the imaging hole (18); An annular mounting sleeve (19) is fixed on the inner wall of the first mounting cavity (11). The mounting sleeve (19) is arranged concentrically with the shooting hole (18). An internal thread is provided on the inner circular surface of the mounting sleeve (19). The mounting sleeve (19) is installed with the macro lens (3) through the internal thread. The vertical distance between the macro lens (3) and the mobile phone lens is adjusted by rotating the macro lens (3), thereby achieving focusing.

9. A compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 1, characterized in that: A front cover (7) is fitted into the first mounting cavity (11), and a rear cover (8) is fitted into the second mounting cavity (12).

10. A compact ophthalmic examination adapter that is easy to assemble and disassemble as described in claim 9, characterized in that: The inner wall of the first mounting cavity (11) and the inner wall of the second mounting cavity (12) are respectively provided with limiting protrusions (15) distributed along the edge shape; A limiting flange (15) arranged in the first mounting cavity (11) is used to limit the front cover (7); The limiting flange (15) arranged in the second mounting cavity (12) is used to limit the rear cover (8).

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