Device for screening for risk of eye disease using a smartphone

Abstract

The utility model relates to a device for screening the risk of eye disease by using smart phone belongs to the technical field of ophthalmic auxiliary device, its structure is: in having magnetism suction charging and discharging smart phone back magnetism suction connects magnetism suction base, magnetism suction base upper surface connects carousel and lighting disc in proper order, magnetism suction base and carousel rotate and cooperate through the rotation column of outer circumference setting, be equipped with wireless charging device in magnetism suction base, and the power supply of wireless charging device passes through electrode ring and elastic contact structure and makes carousel and lighting disc realize power supply intercommunication, lighting disc can rotate coaxially relative to carousel, be equipped with LED lamp group on lighting disc. The device can magnetically attract and combine in having wireless charging and discharging smart phone back, charges for the whole equipment, and rotates lighting disc to the designated cell -phone camera back through connecting carousel, provides continuous power supply for lighting disc simultaneously, guarantees the continuous work of eye disease detection.

Description

Technical Field

[0001] This invention relates to a device for screening the risk of eye diseases using a smartphone, belonging to the technical field of ophthalmic auxiliary devices. Background Technology

[0002] Early diagnosis of eye diseases is a significant challenge in the global health field. Traditional diagnostic methods for common eye conditions such as cataracts, glaucoma, and dry eye rely on ophthalmologists using instruments like slit-lamp microscopes. However, these devices are inconvenient to use, have poor portability, are expensive, and are difficult to use for home self-examination, community screening, and remote diagnosis. With the aging population and the increasing number of patients with chronic diseases, there is an urgent need for intelligent and efficient screening methods. Currently, smartphones are rapidly evolving, equipped with high-resolution cameras and advanced image processing technology. Combined with certain mobile applications, they hold promise as a means for doctors to quickly examine eye diseases. Researchers have already developed utility models that attach to smartphones to help obtain anterior segment or fundus images; however, these products all have a single light source structure and cannot be tailored to specific eye diseases, thus failing to obtain satisfactory image data. For example, in patent number CN201710098623.0, a portable digital slit lamp for cataract screening is used. The setting of a single and fixed angle slit light source makes the photos taken by the mobile phone dim and unclear in detail. Utility Model Content

[0003] The technical problem to be solved by this invention is to provide a device for screening the risk of eye diseases using a smartphone. The device can be magnetically attached to the back of a smartphone with wireless charging and discharging to charge the entire device. It can also rotate an illumination disk to the back of a designated phone camera via a connecting turntable, while providing continuous power to the illumination disk to ensure continuous operation of eye disease detection.

[0004] To solve the above problems, the specific technical solution of this utility model is as follows: A device for screening the risk of eye diseases using a smartphone, characterized in that: a magnetic base is magnetically connected to the back of a smartphone with magnetic charging and discharging capabilities; a turntable and an illumination disc are sequentially connected to the upper surface of the magnetic base; the magnetic base and the turntable are rotatably engaged by a rotating column set on the outer circumference; a wireless charging device is provided inside the magnetic base, and the positive and negative electrodes of the wireless charging device are connected to a first elastic contact point through wires; a macro lens is snapped into a through hole in the center of the turntable, and the center of the macro lens corresponds to the center of the rear camera of the smartphone; a large electrode ring with positive and negative electrodes is provided on the front of the turntable; a small electrode ring with positive and negative electrodes is provided outside the turntable, and the positive and negative electrodes of the large electrode ring and the small electrode ring are connected correspondingly through power lines; the small electrode ring is coaxial with the rotating column, and the positive and negative electrodes of the small electrode ring are respectively in contact with the first elastic contact point; the illumination disc has a through hole in its center, and an LED light group is provided on the outer surface of the illumination disc and located on the outer periphery of the through hole; an illumination main circuit board is provided inside the illumination disc. The LED light assembly is connected to the main lighting circuit board, and the positive and negative terminals of the main lighting circuit board are connected by a second elastic contact. The second elastic contact is connected to the positive and negative electrode rings of the large electrode ring. The lighting disc and the turntable are connected by magnetic attraction or peripheral snap-fit, so that the second elastic contact on the main lighting circuit board can contact the large electrode ring in the turntable to conduct electricity. The lighting disc can rotate coaxially relative to the turntable, and the second elastic contact and the large electrode ring maintain continuous contact during the rotation.

[0005] The wireless charging device includes a wireless charging coil and a charging circuit board. The power input terminal of the charging circuit board is connected to the wireless charging coil, and the output terminal of the charging circuit board is connected to the first elastic contact via a power line.

[0006] The positive and negative poles of the first elastic contact are located on the base of the connecting rotating column, and the small electrode ring is horizontally set and in contact with the first elastic contact; or the positive and negative poles of the first elastic contact are located on the rotating column, and the small electrode ring is vertically set and in contact with the first elastic contact.

[0007] The magnetic base contains a C-shaped magnet or a dotted distribution of magnets, which attracts the magnetic ring of the smartphone case.

[0008] The magnetic base is equipped with a rechargeable lithium battery charging module. The output end of the rechargeable lithium battery charging module is connected to the charging port through a charging circuit board. The charging port extends out of the outer circumference of the magnetic base through the opening of the C-shaped magnet.

[0009] The LED light group of the lighting disc includes at least one white LED and one blue LED; the main lighting circuit board is equipped with a switch button and an adjustment knob, the switch button switches to control the LEDs in different positions, and the adjustment knob controls the brightness of the LEDs.

[0010] The LED light group has two white LEDs located inside the lighting disk. The outer shell of the upper surface of the lighting disk has corresponding perforations. A grid is provided on the perforation of one of the white LEDs to divide the light source surface and make the light source reflection point characteristic. A polarizing film I is provided on the perforation of the other white LED. At the same time, a polarizing film II is provided on the observation through hole in the center of the lighting disk, which is placed perpendicular to the polarizing film I.

[0011] An opening slot is provided on the upper surface of the lighting disk, and a slit light module is installed at the opening slot. The slit light module includes a slit housing, a slit LED lamp, and an optical cylindrical lens. The slit LED lamp is located in the lower part of the inner cavity of the slit housing, and the optical cylindrical lens is located in the upper part of the inner cavity of the slit housing. A partition is provided between the slit LED lamp and the optical cylindrical lens, and a slit parallel to the axis of the optical cylindrical lens is provided on the partition. The positive and negative terminals of the slit LED lamp are connected to a third elastic contact. Two parallel slit light modules are provided in the inner cavity of the lighting disk corresponding to the opening slot. The connecting lugs have positioning posts on both sides of the slit housing, which mate with the connecting lugs. A slit light-guiding circuit board is located between the two connecting lugs. The top of the slit light-guiding circuit board has an electrode groove. After the third elastic contact flips, it contacts and connects with the electrode groove of the slit light-guiding circuit board. A pin is located on the side of the slit light-guiding circuit board, which connects to the main lighting circuit board for power supply. Alternatively, a fourth elastic contact is located at the bottom of the slit light-guiding circuit board, which extends out of the lighting disk and connects to the positive and negative circuits of the large electrode ring.

[0012] The upper surface of the lighting disk is magnetically attached to or the outer circumference is clamped to the surface light source disk; the upper surface of the surface light source disk is a light guide plate, and LED light strips are provided inside the surface light source disk. The positive and negative terminals of the LED light strips are provided with fifth elastic contacts extending out of the lower surface of the surface light source disk; the upper surface of the lighting disk is provided with light guide plate electrical contacts, the upper surface of the light guide plate electrical contacts is provided with electrode slides that communicate with the fifth elastic contacts, and the lower surface of the light guide plate electrical contacts is connected to the circuit of the main lighting circuit board.

[0013] The device for screening the risk of eye diseases using a smartphone, as described in this application, has the following advantages:

[0014] 1. The magnetic base and the connecting turntable are connected by a rotating column. By adjusting the relative rotation between the two, the center of the macro lens in the center of the connecting turntable is aligned with the rear lens of the camera, ensuring that a clear image is presented after the eye disease detection.

[0015] 2. The magnetic base is equipped with a wireless charging device, a first elastic contact, and positive and negative rings for connecting the turntable. This allows the power from the mobile phone to be delivered to the device at any angle of rotation of the turntable, thus providing continuous power.

[0016] 3. Various functional lighting devices are set on the lighting disc to facilitate eye disease detection. The lighting disc is also equipped with a second elastic contact point that contacts the positive and negative electrode rings. The lighting disc can be rotated at any angle relative to the turntable to continuously provide power to the main lighting circuit board.

[0017] 4. The lighting equipment consists of white LED lights, grid and polarized light, blue LED lights and slit lights. Its layout is reasonable, which effectively saves the space occupied by each functional module and reduces the overall size of the equipment.

[0018] 5. Adding a surface light source to the upper surface of the illumination disc can further enhance the function of detecting eye diseases. Attached Figure Description

[0019] Figure 1 This is an overall exploded view of Embodiments 1 to 3 of this application.

[0020] Figure 2 This is an exploded view of the magnetic base.

[0021] Figure 3 This is a three-dimensional view of the turntable from above.

[0022] Figure 4 This is a three-dimensional view of the turntable from below.

[0023] Figure 5 An exploded view of the lighting disk.

[0024] Figure 6 This is a bottom-view perspective view of the main lighting circuit board and the slit light guiding circuit board.

[0025] Figure 7 This is a schematic diagram of the structure of each LED in an LED light assembly.

[0026] Figure 8 This is a diagram of another connection structure for a slit-optical circuit board.

[0027] Figure 9 This is a cross-sectional view of the slit optical module.

[0028] Figure 10 This is an overall exploded view of Embodiment 4 of this application.

[0029] Figure 11 An exploded view of a diffuse reflective light disk.

[0030] Figure 12 This is a diagram showing the positional relationship of each contact point. Detailed Implementation Example 1

[0031] like Figure 1As shown, a device for screening the risk of eye diseases using a smartphone has a magnetic base 1 magnetically connected to the back of a smartphone with magnetic charging and discharging capabilities; a turntable 2 and an illumination disc 3 are sequentially connected to the upper surface of the magnetic base 1.

[0032] The magnetic base 1 and the turntable 2 are rotatably engaged by a rotating column 14 set on the outer circumference. By adjusting the relative rotation between the two, the center of the macro lens connected to the center of the turntable is made concentric with the rear lens of the camera. A wireless charging device 13 is provided in the magnetic base 1, which can be reverse charged by a smartphone. The positive and negative terminals of the wireless charging device 13 are connected to the first elastic contact 16 through wires.

[0033] like Figure 2 As shown, the wireless charging device 13 includes a wireless charging coil 131 and a charging circuit board 132. The power input terminal of the charging circuit board 132 is connected to the wireless charging coil 131, and the output terminal of the charging circuit board 132 is connected to the first elastic contact 16 through a power line.

[0034] like Figure 3 and Figure 4 As shown, a macro lens 26 is snapped into the through hole in the center of the turntable 2. The center of the macro lens 26 corresponds to the center of the rear camera of the smartphone. The macro lens 26 can be replaced as needed. A large electrode ring 22 with positive and negative poles is provided on the front of the turntable 2. A small electrode ring 23 with positive and negative poles is provided on the outside of the turntable 2. The positive and negative poles of the large electrode ring 22 and the small electrode ring 23 are connected to each other through a power line. The small electrode ring 23 is coaxial with the rotating column 14, and the positive and negative electrodes of the small electrode ring 23 are in contact with the first elastic contact 16 respectively.

[0035] The positive and negative poles of the first elastic contact 16 are located on the base 17 connecting the rotating column 14, and the small electrode ring 23 is horizontally arranged and in contact with the first elastic contact 16; or the positive and negative poles of the first elastic contact 16 are located on the rotating column 14, and the small electrode ring 23 is vertically arranged and in contact with the first elastic contact 16. Figure 2 As shown, in this embodiment, the first elastic contact 16 is set outside the rotating column 14, and the positive and negative electrode rings of the small electrode ring 23 are always in contact with the first elastic contact 16 when the turntable 2 rotates at any angle.

[0036] like Figure 5 and Figure 6 As shown, the lighting disk 3 has a through hole at its center. An LED light group is provided on the outer surface of the lighting disk 3 and around the through hole. A main lighting circuit board 32 is provided inside the lighting disk 3. The LED light group is connected to the main lighting circuit board 32. The positive and negative terminals of the circuit of the main lighting circuit board 32 are connected by a second elastic contact 35. The second elastic contact 35 is connected to the positive and negative electrode rings of the large electrode ring 22.

[0037] The lighting disc 3 and the turntable 2 are connected by magnetic attraction or peripheral snap-fit, so that the second elastic contact 35 on the main lighting circuit board 32 contacts the large electrode ring 22 in the turntable 2 to conduct electricity. The lighting disc 3 can rotate coaxially relative to the turntable 2. During the rotation, the second elastic contact 35 and the large electrode ring 22 maintain continuous contact.

[0038] like Figure 5 As shown, the LED light group 31 of the lighting disk 3 includes at least one white LED and one blue LED; a switch button 34 and an adjustment knob 33 are provided on the main lighting circuit board 32. The switch button 34 switches to control the LEDs in different positions, and the adjustment knob 33 controls the brightness of the LEDs.

[0039] like Figure 7 As shown, in this embodiment, the LED light group 31 has two white LEDs, which are located inside the lighting disk 3. The outer shell of the upper surface of the lighting disk 3 has corresponding hollow holes. A grid 31-1 is provided on the hollow hole of one of the white LEDs to divide the light source surface and make the light source reflection point characteristic. A polarizing film I31-2 is provided on the hollow hole of the other white LED. At the same time, a polarizing film II31-3 is provided in the observation through hole in the center of the lighting disk 3, which is placed perpendicular to the polarizing film I31-2. Example 2

[0040] like Figure 2 As shown, based on the structure of Embodiment 1, a rechargeable lithium battery charging module 18 is provided inside the magnetic base 1. The output end of the rechargeable lithium battery charging module 18 is connected to the charging port 19 through a charging circuit board. A C-shaped magnet 12 is provided inside the magnetic base 1, and the charging port 19 extends out of the outer circumference of the magnetic base 1 through the opening of the C-shaped magnet 12. At the same time, in order to save space, an opening corresponding to the position of the charging port 8 is provided on the annular magnet 6. Therefore, the lithium battery charging and discharging module 7, the charging port 8 and the annular magnet 6 can be arranged in the same plane, saving space layout. Example 3

[0041] A device that uses a smartphone to screen for the risk of developing eye diseases, such as Figure 5 As shown, based on the structure of Embodiment 1, an opening slot is provided on the upper surface of the lighting disk 3, and a slit light module 4 is provided at the opening slot; as Figure 8As shown, the slit light module 4 includes a slit housing 41, a slit LED lamp 42, and an optical cylindrical lens 43. The slit LED lamp 42 is located in the lower part of the inner cavity of the slit housing 41, and the optical cylindrical lens 43 is located in the upper part of the inner cavity of the slit housing 41. A partition is provided between the slit LED lamp 42 and the optical cylindrical lens 43, and a slit slit 44 parallel to the axis of the optical cylindrical lens 43 is provided on the partition. The positive and negative terminals of the slit LED lamp 42 are connected to a third elastic contact 45. Two parallel connecting lugs 36 are provided at the corresponding opening slot in the inner cavity of the illumination disk 3. Positioning posts 47 are provided on both sides of the slit housing 41, and the positioning posts 47 cooperate with the connecting lugs 36. A slit light guiding circuit board 46 is provided between the two connecting lugs 36. An electrode groove is provided on the top of the slit light guiding circuit board 46. After the third elastic contact 45 is flipped, it contacts and communicates with the electrode groove of the slit light guiding circuit board 46. Figure 6 As shown, the bottom of the slit light guiding circuit board 46 is provided with a fourth elastic contact 48, which extends out of the illumination disk 3 and is connected to the positive and negative circuits of the large electrode ring 22. Figure 8 As shown, the slit light power supply circuit board 46 has a pin on its side. The pin is connected to the main lighting circuit board 32 to supply power, so as to avoid the fourth elastic contact 48 being restricted in contact and thus affecting the operation of the slit LED lamp 42.

[0042] When the slit LED light 42 is turned on, the light passes through the slit 44 to form a light surface. This light surface passes through the optical cylindrical lens 43 and forms the slit light detection requirement, which can complete the slit detection of the patient's eye. Example 4

[0043] like Figure 10 and Figure 11 As shown, a device for screening the risk of eye diseases using a smartphone, based on the structure of Embodiment 1 or 2, has a surface light source disk 5 magnetically attached or snapped onto the upper surface of the illumination disk 3; a light guide plate 52 is located on the upper surface of the surface light source disk 5; an LED light strip 51 is provided inside the surface light source disk 5; the positive and negative terminals of the LED light strip 51 are provided with fifth elastic contacts 53 extending from the lower surface of the surface light source disk 5; as shown... Figure 5 As shown, a light guide plate electrical contact 38 is provided on the upper surface of the lighting disk 3. The upper surface of the light guide plate electrical contact 38 is provided with an electrode slide that communicates with the fifth elastic contact 53. The lower surface of the light guide plate electrical contact 38 is connected to the circuit of the lighting main circuit board 32. The LED light strip 51 contacts the fifth elastic contact 53 through the light guide plate electrical contact 38, so that the power supply on the lighting disk 3 is transferred to the LED light strip 51, causing the LED light strip 51 to generate diffuse reflection light source through the light guide plate 52.

[0044] like Figure 12As shown, in each embodiment, the power supply of the LED lights is connected through corresponding elastic contacts. Not only is it concentrically set with the rear camera of the mobile phone, but it can also rotate with the lighting disk 3 to adjust the angle, thereby realizing the functions of each module. Example 5

[0045] A method of operating a device based on embodiments one to four that uses a smartphone to screen for the risk of eye diseases includes the following steps:

[0046] Step 1: Set your smartphone to charge other devices, and then attach the magnetic base 1 of this device to the back of your phone case;

[0047] Step 2: Simultaneously rotate the magnetic base 1 and the turntable 2, and adjust the position of the turntable 2 to ensure that the central macro lens 26 is concentric with the rear camera of the mobile phone;

[0048] Step 3: Attach or snap the lighting disc 3 onto the upper surface of the turntable 2, ensuring a continuous circuit connection; rotate the lighting disc 3 to position the lighting lamp as needed; press the switch button 34 to turn one of the LEDs in the LED light group 31 on or off, and adjust the brightness of the LED light group 31 using the adjustment knob 33; or flip the slit light module 4 to ensure a continuous circuit connection between the slit LED lamp 42 and the turntable 2, and turn on the slit light projection; or attach the surface light source emitting disk 5 to the lighting disc 3 to ensure a continuous circuit connection between the LED light strip 51 and the turntable 2.

[0049] Step 4: Illuminate the patient's eye with one of the LEDs in the LED light group 31, the slit LED light 42, or the reflective light disk 5, and image the eye through the macro lens 26 and take a picture with a mobile phone.

[0050] The following section provides further explanation of how each LED light in step three is used for clinical diagnosis of eye diseases.

[0051] Method 1: When the white LED with grid 31-1 in LED light group 31 is turned on, grid 31-1 divides the light source surface and makes the light source have two reflective points. Using this light source, the characteristic reflection of the posterior capsule of the lens, i.e., the fourth Purkinje image, is used to determine whether the patient has cataracts.

[0052] Method 2: When the white LED in the LED light group 31 has a polarizing film I31-2, and the observation hole in the center of the illumination disk 3 is provided with a polarizing film II31-3 that is placed perpendicular to the polarizing film I31-2, the interference of stray light on the skin surface can be eliminated by using this polarized light source mode, and various eyelid diseases can be screened.

[0053] Method 3: When the blue LED light in LED light group 31 is turned on, the condition of the ocular surface after fluorescein staining can be observed, such as the corneal epithelial defects, the tear film breakup time, and the fit of orthokeratology lenses, etc.

[0054] Method 4: When the white LED in LED light group 31 is turned on and the polarizing film I31-2 on it is removed, a clear photo of the diffused light in the anterior segment can be taken in this light mode to record and screen for anterior segment diseases.

[0055] Method 5: When the slit light module 4 is tilted upward and flipped, and the slit LED light 42 is turned on, observe the anterior chamber depth and lens cross-sectional morphology in slit light mode.

[0056] Method 6: When the surface light source emitting disk 5 is set on the illumination disk 3 and the LED light strip 51 is turned on, the surface light source emitting disk 5 produces uniform surface light. Through the principle of interference light, the patient's tear film lipid layer and tear trough height can be observed. At the same time, the tear trough can be clearly displayed and the tear trough height can be observed.

Claims

1. A device for screening the risk of eye diseases using a smartphone, characterized in that: A magnetic base (1) is magnetically connected to the back of a smartphone with magnetic charging and discharging capabilities; a turntable (2) and an illumination disc (3) are sequentially connected to the upper surface of the magnetic base (1); The magnetic base (1) and the turntable (2) are rotated together by a rotating column (14) on the outer circumference; a wireless charging device (13) is provided inside the magnetic base (1), and the positive and negative poles of the wireless charging device (13) are connected to the first elastic contact (16) through wires. A macro lens (26) is snapped into the through hole in the center of the turntable (2), and the center of the macro lens (26) corresponds to the center of the rear camera of the smartphone; a large electrode ring (22) with positive and negative poles is provided on the front of the turntable (2); a small electrode ring (23) with positive and negative poles is provided on the outside of the turntable (2), and the positive and negative poles of the large electrode ring (22) and the small electrode ring (23) are connected through a power line; the small electrode ring (23) is coaxial with the rotating column (14), and the positive and negative electrode rings of the small electrode ring (23) are in contact with the first elastic contact (16) respectively; The lighting disk (3) has a through hole in the center. An LED light group is provided on the outer surface of the lighting disk (3) and on the outer periphery of the through hole. A lighting main circuit board (32) is provided inside the lighting disk (3). The LED light group is connected to the lighting main circuit board (32). The positive and negative terminals of the circuit of the lighting main circuit board (32) are connected by a second elastic contact (35). The second elastic contact (35) is connected to the positive and negative electrode rings of the large electrode ring (22). The lighting disc (3) and the turntable (2) are connected by magnetic attraction or peripheral snap-fit, so that the second elastic contact (35) on the main lighting circuit board (32) contacts the large electrode ring (22) in the turntable (2) to conduct electricity. The lighting disc (3) can rotate coaxially relative to the turntable (2). During the rotation, the second elastic contact (35) and the large electrode ring (22) maintain continuous contact.

2. The device for screening the risk of eye diseases using a smartphone according to claim 1, characterized in that: The wireless charging device (13) includes a wireless charging coil (131) and a charging circuit board (132). The power input terminal of the charging circuit board (132) is connected to the wireless charging coil (131), and the output terminal of the charging circuit board (132) is connected to the first elastic contact (16) through a power line.

3. The device for screening the risk of eye diseases using a smartphone according to claim 2, characterized in that: The positive and negative poles of the first elastic contact (16) are located on the base (17) of the connecting rotating column (14), and the small electrode ring (23) is set horizontally and in contact with the first elastic contact (16); or the positive and negative poles of the first elastic contact (16) are located on the rotating column (14), and the small electrode ring (23) is set vertically and in contact with the first elastic contact (16).

4. The device for screening the risk of eye diseases using a smartphone according to claim 1, characterized in that: The magnetic base (1) is equipped with a C-shaped magnet (12) or a dotted magnet, which attracts the magnetic ring of the smartphone case.

5. The device for screening the risk of eye diseases using a smartphone according to claim 4, characterized in that: The magnetic base (1) is equipped with a rechargeable lithium battery charging module (18). The output end of the rechargeable lithium battery charging module (18) is connected to the charging port (19) through the charging circuit board. The charging port (19) extends out of the outer circumference of the magnetic base (1) through the opening of the C-shaped magnet (12).

6. The device for screening the risk of eye diseases using a smartphone according to claim 1, characterized in that: The LED light group (31) of the lighting disk (3) includes at least one white LED and one blue LED; a switch button (34) and an adjustment knob (33) are provided on the main lighting circuit board (32). The switch button (34) switches the LED lights in different positions, and the adjustment knob (33) controls the brightness of the LED lights.

7. The device for screening the risk of eye diseases using a smartphone according to claim 1, characterized in that: The LED light group (31) has two white LEDs, which are located inside the lighting disk (3). The outer shell of the upper surface of the lighting disk (3) has corresponding hollow holes. A grid (31-1) is provided on the hollow hole of one of the white LEDs to divide the light source surface and make the light source reflection point characteristic. A polarizing film I (31-2) is provided on the hollow hole of the other white LED. At the same time, a polarizing film II (31-3) is placed perpendicular to the polarizing film I (31-2) in the observation through hole in the center of the lighting disk (3).

8. The device for screening the risk of eye diseases using a smartphone according to claim 1, characterized in that: An opening slot is provided on the upper surface of the lighting disk (3), and a slit light module (4) is provided at the opening slot; the slit light module (4) includes a slit housing (41), a slit LED lamp (42), and an optical cylindrical lens (43); the slit LED lamp (42) is located in the lower part of the inner cavity of the slit housing (41), and the optical cylindrical lens (43) is located in the upper part of the inner cavity of the slit housing (41). A partition is provided between the slit LED lamp (42) and the optical cylindrical lens (43), and a slit slit (44) parallel to the axis of the optical cylindrical lens (43) is provided on the partition; the positive and negative poles of the slit LED lamp (42) are connected to a third elastic contact (45); two parallel connecting points are provided in the inner cavity of the lighting disk (3) corresponding to the opening slot. Connecting ear piece (36), positioning post (47) is provided on both sides of the slit shell (41), positioning post (47) cooperates with connecting ear piece (36); slit light-leading circuit board (46) is provided between the two connecting ear pieces (36), the top of slit light-leading circuit board (46) is provided with electrode groove, the third elastic contact (45) is flipped and contacts and communicates with the electrode groove of slit light-leading circuit board (46); the side end of slit light-leading circuit board (46) is provided with pin, the pin is connected to the lighting main circuit board (32) for power lead, or the bottom of slit light-leading circuit board (46) is provided with fourth elastic contact (48), the fourth elastic contact (48) extends out of the lighting disk (3) and is connected to the positive and negative circuits of the large electrode ring (22).

9. The device for screening the risk of eye diseases using a smartphone according to claim 1, characterized in that: The upper surface of the lighting disk (3) is magnetically attached to or the outer circumference is clamped to the surface light source disk (5); the upper surface of the surface light source disk (5) is a light guide plate (52), and the surface light source disk (5) is provided with LED light strips (51). The positive and negative terminals of the LED light strips (51) are provided with fifth elastic contacts (53) extending out of the lower surface of the surface light source disk (5); the upper surface of the lighting disk (3) is provided with light guide plate electrical contacts (38), the upper surface of the light guide plate electrical contacts (38) is provided with an electrode slide that connects to the fifth elastic contacts (53), and the lower surface of the light guide plate electrical contacts (38) is connected to the circuit of the lighting main circuit board (32).

Images