A slit lamp module and an eye examination system

Abstract

The embodiment of the application provides a slit lamp module, comprising: a support, a light source, an adjusting part, a reflecting mechanism and a light uniformizing sheet; the light source and the reflecting mechanism are fixedly connected to the support; the adjusting part is movably connected to the support and located between the light source and the reflecting mechanism, the adjusting part is provided with a first light passing hole and a second light passing hole with different shapes; the reflecting mechanism is provided with a light inlet hole and a light outlet hole; the slit lamp module has a first working state and a second working state; in the first working state, light emitted by the light source is projected to the outside after sequentially passing through the first light passing hole, the light inlet hole, the light outlet hole and the light uniformizing sheet; in the second working state, light emitted by the light source is projected to the outside after sequentially passing through the second light passing hole, the light inlet hole and the light outlet hole. The problems of large volume and complex operation of a traditional slit lamp can be solved.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to a slit lamp module and an eye examination system. Background Technology

[0002] A slit lamp is an ophthalmic examination instrument that includes an illumination module and a microscope. It allows adjustment of the focal point and the width of the light source to create light bands of varying widths on the surface of the eye, enabling observation and examination of the eye's health. Traditional slit lamps suffer from drawbacks such as large size, difficulty in transportation, complex operation, and high price. Furthermore, their operation and image interpretation require specialized medical personnel, limiting their widespread application. Utility Model Content

[0003] This utility model provides a slit lamp module and an eye examination system to solve the problems of large size, difficult transportation, complex operation and high price of slit lamps in related technologies.

[0004] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0005] In a first aspect, this utility model provides a slit lamp module, including: a bracket, a light source, an adjustment component, a reflection mechanism, and a light diffuser;

[0006] The light source and the reflection mechanism are fixedly connected to the bracket;

[0007] The adjusting member is movably connected to the bracket and is located between the light source and the reflection mechanism. The adjusting member has a first light-transmitting hole and a second light-transmitting hole with different shapes.

[0008] The reflective mechanism has a light inlet and a light outlet, with the light inlet opposite to the adjusting member;

[0009] The light-diffusing plate is movably connected to the bracket and is positioned close to the light-emitting hole;

[0010] The slit lamp module has a first working state and a second working state;

[0011] In the first working state, the first light-passing hole is opposite to the light source, the light-diffusing plate is opposite to the light-exiting hole, and the light emitted by the light source passes through the first light-passing hole, the light-inlet hole, the light-exiting hole and the light-diffusing plate in sequence before being projected to the outside.

[0012] In the second working state, the second light-passing hole is opposite to the light source, the light-diffusing plate is away from the light-emitting hole, and the light emitted by the light source passes through the second through hole, the light-in hole and the light-out hole in sequence before being projected to the outside.

[0013] Optionally, the first light-transmitting hole is circular in shape, and the second light-transmitting hole is slit in shape.

[0014] Optionally, the adjusting component includes a rotating shaft and a slit plate connected to each other. The rotating shaft is rotatably connected to the bracket and located between the light source and the reflecting mechanism. The first light-transmitting hole and the second light-transmitting hole are disposed on the slit plate.

[0015] Optionally, the slit sheet includes a support layer and a functional layer, the support layer and the functional layer being stacked, and the thickness of the support layer being greater than the thickness of the functional layer.

[0016] Optionally, the first light-transmitting hole penetrating the support layer is a first sub-light-transmitting hole, and the first light-transmitting hole penetrating the functional layer is a second sub-light-transmitting hole, wherein the size of the first sub-light-transmitting hole is larger than that of the second sub-light-transmitting hole;

[0017] The second light-transmitting hole that penetrates the support layer is a third sub-light-transmitting hole, and the second light-transmitting hole that penetrates the functional layer is a fourth sub-light-transmitting hole. The size of the third sub-light-transmitting hole is larger than that of the fourth sub-light-transmitting hole.

[0018] Optionally, it also includes a limiting member connected to the bracket. In the first working state, the rotating shaft is located in a first position, and the limiting member abuts against the rotating shaft, so that the rotating shaft is held in the first position. In the second working state, the rotating shaft is located in a second position, and the limiting member abuts against the rotating shaft, so that the rotating shaft is held in the second position.

[0019] Optionally, the limiting member is a ball-head plunger, and the rotating shaft is provided with an arc-shaped locking part adapted to the shape of the ball-head plunger. When the rotating shaft is in the first position and the second position, the ball-head plunger abuts against the locking part.

[0020] Optionally, it also includes an elastic element located between the light-diffusing sheet and the support, for providing motion resistance to the light-diffusing element.

[0021] Optionally, it also includes a fixation lamp, which is fixedly connected to the bracket.

[0022] Secondly, this utility model also discloses an eye examination system, including a fundus camera and any of the slit lamp modules disclosed in the first aspect, wherein the slit lamp module is disposed on the fundus camera.

[0023] The slit lamp module provided in this embodiment is used in conjunction with a fundus camera, enabling the fundus camera to simultaneously perform slit lamp examinations. The slit lamp module emits light to provide the detection conditions, while the fundus camera acquires and analyzes the images. The size of the slit lamp module is approximately the size of a human eye socket, making it small and easy to assemble. When slit lamp examination is needed, the slit lamp module is mounted on the fundus camera; when the slit lamp function is not required, the slit lamp module can be removed. The fundus camera replaces the microscope in traditional slit lamp instruments, also featuring a small size, high level of intelligence, simple operation, and strong versatility. The combination of the two not only solves the problems of large size and complex operation of traditional slit lamps but also allows for simultaneous fundus examination and slit lamp examination functions on a single device, greatly expanding the application scenarios of the equipment. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 A schematic diagram of a slit lamp module provided in an embodiment of the present invention is shown;

[0026] Figure 2 This diagram illustrates a slit lamp module provided in an embodiment of the present invention from another direction;

[0027] Figure 3 A schematic diagram of the adjusting member provided in an embodiment of the present invention is shown;

[0028] Figure 4 A schematic diagram of the adjusting member provided in an embodiment of the present invention in another direction is shown;

[0029] Figure 5 A schematic diagram of the functional layers of the adjusting member provided in an embodiment of this utility model is shown;

[0030] Figure 6 This diagram shows an overall assembly schematic of a slit lamp module provided in an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of the eye examination system provided in an embodiment of the present invention is shown.

[0032] Figure label:

[0033] 100: Slit lamp module; 1: Housing; 11: Slide groove; 2: Bracket; 21: Magnet; 22: Circuit board; 3: Light source; 4: Adjustment component; 41: First light-transmitting hole; 411: First sub-light-transmitting hole; 412: Second sub-light-transmitting hole; 42: Second light-transmitting hole; 421: Third sub-light-transmitting hole; 422: Fourth sub-light-transmitting hole; 43: Rotating shaft; 431: Connecting block; 432: Snap-fit ​​part; 433: Rotating shaft cover; 44: Slit plate; 441: Support layer; 4411: Positioning post; 4412: Connecting hole; 442: Functional layer; 4421: Positioning hole; 45: First slit switching position; 5: Reflection mechanism; 51: Light inlet hole; 52: Light outlet hole; 6: Light diffuser; 61: Second slit switching position; 7: Limiting component; 8: Plug screw; 81: Elastic component; 9: Fixation lamp; 200: Fundus camera. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0036] like Figure 1As shown in Figure 2, this embodiment provides a slit lamp module 100, including: a bracket 2, a light source 3, an adjusting member 4, a reflecting mechanism 5, and a light diffuser 6; the light source 3 and the reflecting mechanism 5 are fixedly connected to the bracket 2; the adjusting member 4 is movably connected to the bracket 2 and is located between the light source 3 and the reflecting mechanism 5, and the adjusting member 4 has a first light-transmitting hole 41 and a second light-transmitting hole 42 with different shapes; the reflecting mechanism 5 has a light-inlet hole 51 and a light-outlet hole 52, and the light-inlet hole 51 is opposite to the adjusting member 4; the light diffuser 6 is movably connected to the bracket 2 and is close to... The light emission aperture 52 is provided; the slit lamp module 100 has a first working state and a second working state; in the first working state, the first light transmission aperture 41 is opposite to the light source 3, the light diffuser 6 is opposite to the light emission aperture 52, and the light emitted by the light source 3 passes through the first through hole, the light inlet aperture 51, the light emission aperture 52 and the light diffuser 6 in sequence before being projected to the outside; in the second working state, the second light transmission aperture 42 is opposite to the light source 3, the light diffuser 6 is away from the light emission aperture 52, and the light emitted by the light source 3 passes through the second through hole, the light inlet aperture 51 and the light emission aperture 52 in sequence before being projected to the outside.

[0037] The bracket 2 supports the various optical components on the slit lamp module 100. The bracket 2 has a through-hole at its center, forming a channel for light propagation. The light source 3 emits light, the adjustment component 4 adjusts the shape of the light band formed on the eyeball, the reflection mechanism 5 adjusts the direction of light propagation, and the diffuser 6 adjusts the light intensity. The light adjusted by these optical components is projected onto the user's eyeball, forming light bands of varying widths on the eyeball surface for observation of the eye's health.

[0038] like Figure 2 As shown, the light source 3 and the reflecting mechanism 5 are positioned opposite each other on both sides of the bracket 2. The light source 3 is located at the center of the light path. The reflecting mechanism 5 has a light inlet 51 and a light outlet 52. The light inlet 51 faces the light source 3, and the light emitted by the light source 3 enters the reflecting mechanism 5 through the light inlet 51. Inside the reflecting mechanism 5, multiple lenses and mirrors are arranged at certain angles and distances along the light propagation path. After being adjusted by the lenses and mirrors, the incoming light exits through the light outlet 52 and propagates in a designated direction. The user wears the slit lamp module 100 on the eye socket, with the eyeball positioned precisely on the light path, forming a light band on the surface of the eyeball for optical examination of lesions on the surface of the eyeball.

[0039] In practical applications, the slit lamp module 100 needs to be used in conjunction with the fundus camera 200. The slit lamp module 100 is mounted on the lens of the fundus camera 200, with the light transmission aperture on the slit lamp module 100 aligned with the lens of the fundus camera 200, so that the user's eye image falls into the frame captured by the lens. A fixation lamp 9 is mounted on the bracket 2, with its light source 3 facing the user. The fixation lamp 9 illuminates when the fundus camera 200 takes a picture. The purpose of the fixation lamp 9 is to guide the user's eyes to focus on a fixed point, preventing eye movements during shooting that could lead to image capture failure. (Reference) Figure 2 The bracket 2 also has a circuit board 22, which is connected to the light source 3, the reflection mechanism 5, and the fixation lamp 9. In use, the circuit board 22 is connected to the circuit of the fundus camera 200 to power the slit lamp module 100. The slit lamp module 100 does not need a separate power supply, so that the slit lamp module 100 can be made lighter. In some embodiments, the light source 3, the reflection mechanism 5, and the fixation lamp 9 can also be connected to the control system of the fundus camera 200 through the circuit board 22, so that the optical components on the slit lamp module 100 can be adjusted and controlled synchronously at the operation terminal of the fundus camera 200.

[0040] It should be noted that in slit-lamp examination, the shape and intensity of the light band formed by the light projected onto the eyeball differ depending on the location of the eye being examined. Therefore, the slit lamp has two modes: diffused light and slit light. Diffuse light is a wider light band that illuminates the entire ocular surface, while slit light is a narrower light band that forms a light cross-section on the eyeball. In this embodiment, the switching between the two modes is achieved by adjusting the positions of the adjusting element 4 and the light diffuser 6, enabling the slit lamp module 100 to meet the needs of slit-lamp examination. Figure 1 As shown, the adjusting component 4 has two light-transmitting holes of different shapes, corresponding to two different working states. Figure 6 The D and S modes are used to represent different light bands, forming light bands of different shapes. The diffuser 6 changes the light intensity in accordance with the shape of the light band.

[0041] Optionally, in some embodiments, the first light-transmitting hole 41 is circular in shape, and the second light-transmitting hole 42 is slit in shape.

[0042] The first light-transmitting hole 41 is a large circular hole, and the second light-transmitting hole 42 is a narrow slit approximately 0.1 mm wide. In the first working state, the control adjustment component 4 and the light-diffusing plate 6 are adjusted to the first working state. Figure 6In the D setting shown, the first light-passing aperture 41 is aligned with the light source 3, and the diffuser 6 is aligned with the light-emitting aperture 52 of the reflecting mechanism 5. The light emitted from the light source 3 passes through the first light-passing aperture 41, forming a circular diffused light. This circular light band retains most of the light emitted from the light source 3 and has a strong light intensity. Since the user's eyes cannot be exposed to strong light for extended periods, the diffuser 6 is needed to adjust the light band to a suitable intensity to avoid eye discomfort caused by strong light. The diffuser 6 can be made of materials such as plastic or frosted glass to evenly scatter the light, resulting in more uniform light reaching the surface of the eyes. The diffuser 6 must be used synchronously with the first light-passing aperture 41.

[0043] In the second working state, the control adjustment element 4 and the light-diffusing plate 6 are adjusted to the second working state. Figure 6 In the S setting shown, the second light-transmitting aperture 42 is aligned with the light source 3, and the light diffuser 6 is positioned away from the light-emitting aperture 52. The light emitted by the light source 3 passes through the second light-transmitting aperture 42, forming a slit-like beam. The adjustment element 4 blocks most of the light emitted by the light source 3, resulting in a relatively dark light band that can be directly emitted through the light-emitting aperture 52 and illuminate the user's eye surface.

[0044] In this embodiment, the slit lamp module 100 works in conjunction with the fundus camera 200, enabling the fundus camera 200 to simultaneously perform slit lamp examinations. The slit lamp module 100 emits light to provide the detection conditions, while the fundus camera 200 acquires and analyzes the acquired images. The size of the slit lamp module 100 is approximately the size of a human eye socket, making it small and easy to assemble. When slit lamp examination is needed, the slit lamp module 100 is mounted on the fundus camera 200; when the slit lamp function is not needed, the slit lamp module 100 can be removed. The fundus camera 200 replaces the microscope in traditional slit lamp instruments, also featuring a small size, high level of intelligence, simple operation, and strong versatility. The combination of the two not only solves the problems of large size and complex operation of traditional slit lamps but also allows for the simultaneous implementation of fundus examination and slit lamp examination functions on a single device, greatly expanding the application scenarios of the equipment.

[0045] Furthermore, since the slit lamp module 100 is designed to work with the fundus camera 200, its structure and dimensions can be adaptively adjusted according to the actual situation of the fundus camera 200. For example... Figure 7 As shown, the housing of the fundus camera 200 roughly conforms to the contour of the human head, forming a dark chamber around the user's eye that isolates external light, providing an environment for optical examination. The slit lamp module 100 is installed inside the housing of the fundus camera 200. In this embodiment, the slit lamp module 100 is designed for monocular examination mode. Its overall size is slightly larger than a single human eye socket, approximately 4mm x 7mm, which is significantly smaller than that of a traditional slit lamp. During use, the eye to be examined is aligned with the light emitted by the slit lamp module 100.

[0046] Optionally, the slit lamp module 100 may further include a housing 1, with a bracket 2, a light source 3, an adjustment component 4, a reflection mechanism 5, and a light diffuser 6 disposed within the housing 1. A magnet 21 is provided at the bottom of the housing 1, and a corresponding magnet 21 is also provided on the back of the lens cover of the fundus camera 200, allowing the slit lamp module 100 to be magnetically attached to the fundus camera 200. Of course, other connection methods can also be used between the slit lamp module 100 and the fundus camera 200; this embodiment does not strictly limit this. An electronic contact is also provided at the bottom of the housing 1, which is electrically connected to the circuit board 22 within the slit lamp module 100. An interface is correspondingly provided on the lens cover of the fundus camera 200, allowing the slit lamp module 100 to be connected to the circuitry of the fundus camera 200. The mechanical and electrical connections between the slit lamp module 100 and the fundus camera 200 are achieved by providing the magnet 21 and the electronic contact at the bottom of the housing 1, respectively.

[0047] In some alternative embodiments, the adjusting member 4 includes a rotating shaft 43 and a slit plate 44 connected to each other. The rotating shaft 43 is rotatably connected to the bracket 2 and located between the light source 3 and the reflection mechanism 5. The first light-transmitting hole 41 and the second light-transmitting hole 42 are disposed on the slit plate 44.

[0048] The adjusting component 4 rotates to switch the first light-transmitting hole 41 and the second light-transmitting hole 42 on the light source 3. For example... Figure 3 The adjusting component 4 includes a cylindrical rotating shaft 43 and a fan-shaped slit plate 44. The rotating shaft 43 is rotatably connected to the bracket 2, and the slit plate 44 is fixedly connected to the rotating shaft 43 and located in the propagation path of the light emitted by the light source 3. A first light-transmitting hole 41 and a second light-transmitting hole 42 are disposed on the slit plate 44. The rotating shaft 43 drives the slit plate 44 to rotate, causing the slit lamp module 100 to switch between a first working state and a second working state.

[0049] The end of the rotating shaft 43 can be machined with a connecting block 431 of irregular shape. A corresponding connecting hole 4412 is provided on the slit plate 44. The connecting block 431 is inserted into the connecting hole 4412 for connection, so as to prevent the rotating shaft 43 and the slit plate 44 from becoming loose and moving.

[0050] In some alternative embodiments, the slit plate 44 includes a support layer 441 and a functional layer 442, which are stacked together, with the thickness of the support layer 441 being greater than the thickness of the functional layer 442.

[0051] The slit plate 44 consists of a support layer 441 and a functional layer 442. Since the width of the first light-transmitting hole 41 is only about 0.1 mm, a hole that is too thick would obstruct light transmission and result in unclear light edges. Therefore, the functional layer 442, which provides the first light-transmitting hole 41 and the second light-transmitting hole 42, has a thickness of about 0.1 mm to ensure image quality. The functional layer 442 is made of metal, ensuring uniform and burr-free light edges with a neater appearance. The functional layer 442 is connected to the support layer 441, which is about 1 mm thick. The support layer 441 provides support for the functional layer 442, addressing the problem that the thin metal sheet of the functional layer 442 is not strong enough and easily deforms during rotation or shaking.

[0052] In specific applications, such as Figure 3 - Figure 4 As shown, due to insufficient strength of the functional layer 442, the connecting hole 4412 on the slit plate 44 can be set on the support layer 441. The connection between the slit plate 44 and the rotating shaft 43 is achieved through the support layer 441, and the functional layer 442 is bonded to the support layer 441 by adhesive. The functional layer 442 is also provided with a positioning hole 4421, and the support layer 441 has a protruding positioning post 4411 at the corresponding position. The positioning post 4411 of the support layer 441 is inserted into the positioning hole 4421 of the functional layer 442, and glue is applied to the hole to complete the bonding between the functional layer 442 and the support layer 441. It can be understood that the outer edge of the support layer 441 extends at least beyond the outer edge of the functional layer 442 to protect the functional layer 442, which has lower strength.

[0053] In some alternative embodiments, the first light-transmitting hole 41 penetrating the support layer 441 is a first sub-light-transmitting hole 411, and the first light-transmitting hole 41 penetrating the functional layer 442 is a second sub-light-transmitting hole 412, with the size of the first sub-light-transmitting hole 411 being larger than that of the second sub-light-transmitting hole 412; the second light-transmitting hole 42 penetrating the support layer 441 is a third sub-light-transmitting hole 421, and the second light-transmitting hole 42 penetrating the functional layer 442 is a fourth sub-light-transmitting hole 422, with the size of the third sub-light-transmitting hole 421 being larger than that of the fourth sub-light-transmitting hole 422.

[0054] like Figure 4 As shown, in this embodiment, the first light-transmitting hole 41 forms a first sub-light-transmitting hole 411 and a second sub-light-transmitting hole 412 on the support layer 441 and the functional layer 442, respectively. The second light-transmitting hole 42 forms a third sub-light-transmitting hole 421 and a fourth sub-light-transmitting hole 422 on the support layer 441 and the functional layer 442, respectively. The size of the first sub-light-transmitting hole 411 and the third sub-light-transmitting hole 421 on the support layer 441 is at least larger than the second sub-light-transmitting hole 412 and the fourth sub-light-transmitting hole 422 on the functional layer 442, so as to avoid the first sub-light-transmitting hole 411 and the third sub-light-transmitting hole 421 interfering with the propagation of light. The shape of the light after passing through the slit plate 44 ultimately depends on the shape of the second sub-light-transmitting hole 412 and the fourth sub-light-transmitting hole 422.

[0055] It should be noted that, Figure 4 This is merely an example design where the vias on the support layer 441 and the functional layer 442 have the same shape and number, differing only in size. In reality, only the second sub-light-transmitting aperture 412 and the fourth sub-light-transmitting aperture 422 on the functional layer 442 function as gaps; the vias on the support layer 441 serve a buffering function. Therefore, as long as the second sub-light-transmitting aperture 412 and the fourth sub-light-transmitting aperture 422 on the functional layer 442 are exposed to the light path and possess the aforementioned large circular aperture and 0.1mm wide slit, the difference in shape and number of vias on the support layer 441 will not interfere with light propagation. For the same reason, the front-to-back relationship between the support layer 441 and the functional layer 442 does not affect the propagation of light. The functional layer 442 can be positioned close to the light source 3, so that light first passes through the second sub-light-transmitting hole 412 or the fourth sub-light-transmitting hole 422, and then through the first sub-light-transmitting hole 411 and the third sub-light-transmitting hole 421. Alternatively, the functional layer 442 can be positioned away from the light source 3, so that light first passes through the first sub-light-transmitting hole 411 and the third sub-light-transmitting hole 421, and then through the second sub-light-transmitting hole 412 or the fourth sub-light-transmitting hole 422. (The attached diagram is not included in this text.) Figure 4 The structures shown are for illustrative purposes only and should not be construed as limiting the scope of this invention.

[0056] In addition, in some optional embodiments, a limiting member 7 is also included. The limiting member 7 is connected to the bracket 2. In the first working state, the rotating shaft 43 is located in the first position, and the limiting member 7 abuts against the rotating shaft 43, so that the rotating shaft 43 is held in the first position. In the second working state, the rotating shaft 43 is located in the second position, and the limiting member 7 abuts against the rotating shaft 43, so that the rotating shaft 43 is held in the second position.

[0057] A rotating shaft cover 433 is provided above the rotating shaft 43 to fix the rotating shaft 43 on the bracket 2. A limiting member 7 is provided in the rotating shaft cover 43.

[0058] Optionally, the limiting member 7 is a ball-head plunger, and the rotating shaft 43 is provided with an arc-shaped locking part 432 adapted to the shape of the ball-head plunger. When the rotating shaft 43 is in the first position and the second position, the ball-head plunger abuts against the locking part 432.

[0059] The bottom of the ball plunger is spherical and contains a spring. Two arc-shaped locking portions 432 are correspondingly provided on the rotating shaft 43, which mate with the spherical bottom of the ball plunger. When the rotating shaft 43 switches between the first and second positions, it compresses the spring, causing the bottom of the ball plunger to retract. When the rotating shaft 43 reaches its final position, the bottom of the ball plunger aligns with the arc-shaped locking portions 432 and falls into them under the spring force. The impact force when the bottom of the ball plunger falls provides mechanical vibration feedback, allowing the operator to easily know that the gear has been switched to the correct position.

[0060] Additionally, in some optional embodiments, an elastic element 81 is included, located between the light homogenizer 6 and the support 2, for providing resistance to movement of the light homogenizer.

[0061] In practical applications, the light-diffusing plate 6 is rotatably connected to the bracket 2 via two side-mounted screws 8. The screws 8 can be divided into a threaded part, a smooth part, and a fixing block along the axial direction. The threaded part of the screw 8 is inserted into the threaded hole on the bracket 2, and the smooth part passes through the rotation hole of the light-diffusing plate 6. The light-diffusing plate 6 rotates around the screw 8 as an axis to achieve the switching between the first working state and the second working state. A spring is connected between the fixing block and the light-diffusing plate 6 to produce a damping effect when switching between different modes.

[0062] Both the adjusting element 4 and the light-diffusing plate 6 switch between the first and second working states by rotation. A first slit switching stop 45 and a second slit switching stop 61 can be respectively provided on the adjusting element 4 and the light-diffusing plate 6. A corresponding groove 11 is provided on the housing 1, and the first slit switching stop 45 and the second slit switching stop 61 are located within the groove 11 and can slide along the groove 11. The two ends of the groove 11 correspond to the first and second working states respectively, and text markings are provided on the surface of the housing 1. This allows the operator to control the rotation of the adjusting element 4 and the light-diffusing plate 6 by tossing, enabling the slit lamp module 100 to switch between the first and second working states.

[0063] This utility model embodiment also discloses an eye examination system, including a fundus camera 200 and any of the slit lamp modules 100 in the above embodiments, wherein the slit lamp module 100 is disposed on the fundus camera 200.

[0064] In use, first install the slit lamp module 100 onto the fundus camera 200. When using the ocular surface imaging function, switch the first slit switch 45 and the second slit switch 61 to the D position, i.e., the first working state. Then, follow the voice prompts of the device and place your head in front of the module. The fundus camera 200 will then capture the corresponding ocular images.

[0065] In slit mode, first switch the first slit switch 45 and the second slit switch 61 to the S position, i.e., the second working state. Then, follow the device's voice prompts and place your head in front of the module. The fundus camera 200 will then acquire the corresponding eye images.

[0066] The eye examination system in this embodiment has the same advantages as the slit lamp module 100 described above, which will not be repeated here.

[0067] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0068] Although alternative embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the alternative embodiments as well as all changes and modifications falling within the scope of the present invention.

[0069] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0070] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the principle and implementation of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A slit lamp module, characterized in that, include: Support frame, light source, adjustment components, reflection mechanism, and diffuser; The light source and the reflection mechanism are fixedly connected to the bracket; The adjusting member is movably connected to the bracket and is located between the light source and the reflection mechanism. The adjusting member has a first light-transmitting hole and a second light-transmitting hole with different shapes. The reflective mechanism has a light inlet and a light outlet, with the light inlet opposite to the adjusting member; The light-diffusing plate is movably connected to the bracket and is positioned close to the light-emitting hole; The slit lamp module has a first working state and a second working state; In the first working state, the first light-passing hole is opposite to the light source, the light-diffusing plate is opposite to the light-exiting hole, and the light emitted by the light source passes through the first light-passing hole, the light-in hole, the light-exiting hole and the light-diffusing plate in sequence before being projected to the outside. In the second working state, the second light-transmitting hole is opposite to the light source, the light-diffusing plate is away from the light-emitting hole, and the light emitted by the light source passes through the second light-transmitting hole, the light-in hole and the light-emitting hole in sequence before being projected to the outside.

2. The slit lamp module as described in claim 1, characterized in that, The first light-transmitting hole is circular in shape, and the second light-transmitting hole is slit in shape.

3. The slit lamp module as described in claim 1, characterized in that, The adjusting component includes a rotating shaft and a slit plate connected to each other. The rotating shaft is rotatably connected to the bracket and located between the light source and the reflection mechanism. The first light-transmitting hole and the second light-transmitting hole are disposed on the slit plate.

4. The slit lamp module as described in claim 3, characterized in that, The slit sheet includes a support layer and a functional layer, which are stacked together, and the thickness of the support layer is greater than the thickness of the functional layer.

5. The slit lamp module as described in claim 4, characterized in that, The first light-transmitting hole that penetrates the support layer is a first sub-light-transmitting hole, and the first light-transmitting hole that penetrates the functional layer is a second sub-light-transmitting hole. The size of the first sub-light-transmitting hole is larger than that of the second light-transmitting hole. The second light-transmitting hole that penetrates the support layer is a third sub-light-transmitting hole, and the second light-transmitting hole that penetrates the functional layer is a fourth sub-light-transmitting hole. The size of the third sub-light-transmitting hole is larger than that of the fourth sub-light-transmitting hole.

6. The slit lamp module as described in claim 3, characterized in that, It also includes a limiting member connected to the bracket. In the first working state, the rotating shaft is located in a first position, and the limiting member abuts against the rotating shaft, so that the rotating shaft is held in the first position. In the second working state, the rotating shaft is located in a second position, and the limiting member abuts against the rotating shaft, so that the rotating shaft is held in the second position.

7. The slit lamp module as described in claim 6, characterized in that, The limiting component is a ball-head plunger, and the rotating shaft is provided with an arc-shaped locking part adapted to the shape of the ball-head plunger. When the rotating shaft is in the first position and the second position, the ball-head plunger abuts against the locking part.

8. The slit lamp module as described in claim 1, characterized in that, It also includes an elastic element located between the light-diffusing sheet and the support, which provides resistance to movement of the light-diffusing element.

9. The slit lamp module as described in claim 1, characterized in that, It also includes a fixed-view lamp, which is fixedly connected to the bracket.

10. An eye examination system, characterized in that, It includes a fundus camera and a slit lamp module as described in any one of claims 1-9, wherein the slit lamp module is disposed on the fundus camera.

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