Slit lamp

Abstract

The utility model relates to the field of slit lamp microscopes, in particular to a slit lamp. Comprising a lifting placement table, a face fixer, an illumination tower, a control base, a micro-motion platform, an image acquisition unit and a display, the micro-motion platform is arranged on the tabletop of the lifting placement table; the illumination tower and the image acquisition unit are rotationally arranged on the micro-motion platform, the rotation axes of the illumination tower and the image acquisition unit are the same, and the illumination tower and the image acquisition unit are kept relatively static; the image acquisition unit is used for acquiring an eye image of a detector; and the display is connected to the lifting placement table, electrically connected with the image acquisition unit and used for displaying the target image. According to the utility model, the collected eye image of a patient can be displayed on the display, so that a user can use the device more conveniently and comfortably. In addition, the image acquisition unit can also have an image recognition function, so that the eye condition of the patient can be automatically judged according to the image, which is more efficient and accurate.

Description

Technical Field

[0001] The utility model relates to the field of slit lamp microscopes, and particularly to a slit lamp. Background Art

[0002] A slit lamp, also known as a slit lamp microscope, is a precision inspection device widely used in the field of ophthalmology. The slit lamp consists of a high-intensity light source that can focus to produce a thin beam of light, precisely illuminating different parts of the eye. It is used in combination with a biological microscope. By adjusting the width, angle, brightness of the light and using different filters, the details of each layer of the eye tissue can be highlighted.

[0003] The slit lamp is mainly used for the detailed examination of the anterior segment structure of the eye, including the eyelids, conjunctiva, sclera, cornea, anterior chamber, iris, pupil and lens, and even the anterior one-third part of the vitreous body can be observed. It can help doctors determine the location, nature, size and depth of eye diseases, and is crucial for corneal evaluation, diagnosis of ocular surface diseases, screening of refractive errors, detection of cataracts and diagnosis of glaucoma, etc.

[0004] In existing eye examinations, doctors judge the eye conditions of patients based on what they observe through the slit lamp microscope. The diagnosis results have a high degree of correlation with the doctor's experience, and long-term use of the slit lamp microscope can also cause eye discomfort to doctors. Summary of the Invention

[0005] In view of this, the utility model provides a slit lamp, which at least partially solves the problems existing in the prior art.

[0006] According to one aspect of the utility model, there is provided a slit lamp, comprising:

[0007] A lifting placement table, a face fixator, an illumination tower, a control base, a micro-moving platform, an image acquisition unit and a display;

[0008] The control base is arranged on the tabletop of the lifting placement table; both the micro-moving platform and the face fixator are arranged on the control base, and the micro-moving platform moves relative to the plane where the control base is located;

[0009] Both the illumination tower and the image acquisition unit are rotatably arranged on the micro-moving platform. The rotation axes of the illumination tower and the image acquisition unit are the same, and the illumination tower and the image acquisition unit remain relatively stationary; the image acquisition unit is used to acquire the eye image of the detector;

[0010] The display is connected to the lifting placement table, and the display is electrically connected to the image acquisition unit for displaying the target image.

[0011] The technical solution of the utility model has at least the following beneficial effects:

[0012] In the present utility model, the lifting placement table, the control base and the micro-moving platform facilitate the user to adjust and move more conveniently during use. At the same time, by setting the image acquisition unit and the display, the eye images of the patient collected can be displayed on the display, so that the user can judge and diagnose more conveniently and comfortably. In addition, the image acquisition unit in the present utility model can also be an existing image acquisition unit with image recognition function, so that the eye conditions of the patient can be automatically judged through the collected images, which is more efficient and accurate, and can assist the user in diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 Structural schematic diagram of a slit lamp in an embodiment of the present application;

[0015] Figure 2 Structural schematic diagram of the connection of the lighting tower, the control base, the micro-moving platform and the image acquisition unit in another embodiment of the present application;

[0016] Figure 3 Structural schematic diagram of a slit lamp in an embodiment of the present application;

[0017] Figure 4 Structural schematic diagram of the connection of the lighting tower, the control base, the micro-moving platform and the image acquisition unit in another embodiment of the present application;

[0018] Figure 5 Structural schematic diagram of the lighting tower in another embodiment of the present application;

[0019] Figure 6 Structural schematic diagram of the width adjustment device in another embodiment of the present application;

[0020] Figure 7 Internal transmission structural schematic diagram of the width adjustment device with the elastic holding member being a spring in another embodiment of the present application;

[0021] Figure 8 Internal transmission structural schematic diagram of the width adjustment device with the elastic holding member being a rubber cord in another embodiment of the present application;

[0022] Figure 9 For Figure 7 and Figure 8Schematic diagram of the arrangement structure between the first guiding slideway and the bearing block slider in the width adjustment device;

[0023] Figure 10 For Figure 7 And Figure 8 Schematic diagram of the arrangement structure of the interval relationship between the upper and lower bearing block sliders in the width adjustment device;

[0024] Figure 11 Schematic diagram of the internal transmission structure of the width adjustment device in another embodiment of the present application where the spring is connected between the arc-shaped half bearing and the inner side wall of the first placement sleeve;

[0025] Figure 12 For Figure 11 Schematic diagram of the arrangement structure between the first guiding slideway and the bearing block slider in the width adjustment device;

[0026] Figure 13 Schematic diagram of the connection structure between the arc-shaped half bearing, the width adjustment knife and the adjustment roller in another embodiment of the present application;

[0027] Figure 14 Schematic diagram of the structure of the length and color adjustment device in another embodiment of the present application;

[0028] Figure 15 Schematic diagram of the internal structure decomposition of the length and color adjustment device in another embodiment of the present application;

[0029] Figure 16 Schematic diagram of the arrangement structure of two gear crank arms in the gear position adjustment module in another embodiment of the present application;

[0030] Figure 17 Schematic diagram of the structure of the color adjustment turntable in another embodiment of the present application;

[0031] Figure 18 For Figure 17 Enlarged structure schematic diagram at position A in;

[0032] Figure 19 Schematic diagram of the connection structure between the gear position adjustment module, the partition board (transparent display) and the color adjustment turntable in another embodiment of the present application.

[0033] Reference numerals

[0034] 1. Reflector assembly; 10. Second placement sleeve; 101. Third guiding slideway; 11. First placement sleeve; 110. First guiding slideway; 12. Pressing rod sleeve; 120. Limiting block; 13. Worm; 14. Worm gear; 15. Adjusting rod; 16. Rubber rope; 17. Arc-shaped half axle tile; 171. Axle tile slider; 172. Adjusting roller; 173. Positioning column; 174. Width adjusting knife; 18. Wedge-shaped adjusting block; 19. Spring; 2. Width adjusting device; 3. Length and color adjusting device; 30. Third placement sleeve; 31. Adjusting window; 32. Rotating connection bracket; 33. Length adjusting wheel disc; 330. Circular adjusting hole; 331. Special-shaped adjusting hole; 34. Color adjusting wheel disc; 340. Clamping groove; 341. Color adjusting hole; 342. Main limiting groove; 343. Importing sub-groove; 35. Partition board; 350. Light avoidance through groove; 351. Elastic part avoidance through groove; 360. First support arm; 361. Second support arm; 362. Adjusting end; 4. Image acquisition unit; 5. Lighting tower; 6. Micro-motion platform; 7. Lifting placement table; 8. Display; 9. Face fixator; 90. Supplementary light. Detailed implementation mode

[0035] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0036] It should be noted that, without conflict, the following embodiments and the features in the embodiments may be combined with each other; and, based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present disclosure.

[0037] It should be noted that the following describes various aspects of embodiments within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present disclosure, those skilled in the art should understand that one aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. Additionally, this device and / or this method may be implemented using other structures and / or functionality in addition to one or more of the aspects described herein.

[0038] As an embodiment of the present utility model, as Figure 1 and Figure 3 shown, a slit lamp is provided, including:

[0039] Lifting placement table 7, face fixator 9, lighting tower 5, control base, micro-motion platform 6, image acquisition unit 4 and display 8.

[0040] The control base is arranged on the desktop of the lifting and placing table 7. Multiple universal wheels are arranged at the bottom of the lifting and placing table 7, and multiple handles are arranged on the desktop of the lifting and placing table 7.

[0041] The micro-motion platform 6 and the face fixator 9 are both arranged on the control base, and the micro-motion platform 6 moves relative to the plane where the control base is located. A supplementary light 90 is arranged above the face fixator 9.

[0042] Such as Figure 2 and Figure 4 shown, the micro-motion platform 6 includes two rack-and-rail slides, a gear connecting shaft and a sliding sleeve.

[0043] The gears at both ends of the gear connecting shaft are respectively meshed with the racks in the two rack-and-rail slides. The sliding sleeve is slidably sleeved on the gear connecting shaft. Through the cooperation of the gear and the rack, the micro-motion platform 6 can be driven to approach or move away from the eyes of the detector.

[0044] The lighting tower 5 and the image acquisition unit 4 are both rotatably arranged on the micro-motion platform 6. The rotation axes of the lighting tower 5 and the image acquisition unit 4 are the same, and the lighting tower 5 and the image acquisition unit 4 remain relatively stationary. The image acquisition unit 4 is used to acquire the eye images of the detector. The display 8 is connected to the lifting and placing table 7 through a multi-section adjustment arm. The display 8 is electrically connected to the image acquisition unit 4 and is used to display the target image.

[0045] In this embodiment, through the lifting and placing table 7, the control base and the micro-motion platform 6, it is convenient for the user to adjust and move more conveniently during use. At the same time, by setting the image acquisition unit 4 and the display 8, the acquired eye images of the patient can be displayed on the display 8 so that the user can judge and diagnose more conveniently and comfortably. In addition, the image acquisition unit 4 in the same utility model can also be an existing image acquisition unit 4 with an image recognition function. Thus, the eye condition of the patient can be automatically judged through the acquired images, which is more efficient and accurate and can assist the user in diagnosis.

[0046] The lighting tower 5 in this embodiment is a device in a slit lamp for providing slit light, and this device has the functions of adjusting the length, width, direction and color of the slit light. Specifically, such as Figure 5 shown, in the lighting tower 5 of this embodiment, a reflector assembly 1, a width adjustment device 2, and a length and color adjustment device 3 are arranged in sequence from top to bottom. The reflector assembly 1 is used for fine-tuning the direction of the slit light; the width adjustment device 2, the length and color adjustment device 3 are respectively used for adjusting the width, length and color of the slit light. Specific details will be introduced and described in detail in the following embodiments.

[0047] As another embodiment of the present utility model, such as Figures 6 to 13As shown, a slit light width adjustment device 2 is also provided, which can be the device inside the lighting tower 5 in the above embodiment for adjusting the width of the slit light.

[0048] The slit light width adjustment device 2 includes: a first placement sleeve 11, a wedge-shaped adjustment block 18, a drive module, an elastic retainer, two arc-shaped half shaft sleeves 17, two width adjustment blades 174 and two adjustment rollers 172.

[0049] Two first guiding slides 110 are arranged in parallel on the inner side wall of the first placement sleeve 11, and the sliding direction of the first guiding slide 110 is perpendicular to the central axis of the first placement sleeve 11.

[0050] The two arc-shaped half shaft sleeves 17 are respectively slidably arranged in the two first guiding slides 110 through shaft sleeve sliders 171, and the two arc-shaped half shaft sleeves 17 are arranged oppositely. As Figure 9 and Figure 12 shown, the matching structure between the two shaft sleeve sliders 171 located above and the two first guiding slides 110 can ensure that the two arc-shaped half shaft sleeves 17 are slidably installed in the first placement sleeve 11. In this structure, in order to reduce the sliding resistance, the shaft sleeve slider 171 can be set as a cylindrical structure.

[0051] The two width adjustment blades 174 are respectively connected to the bottoms of the two arc-shaped half shaft sleeves 17. A positioning post 173 is arranged at the bottom of the arc-shaped half shaft sleeve 17, and the width adjustment blade 174 is rotatably arranged on the positioning post 173. The width of the width adjustment blade 174 is greater than or equal to the width of the arc-shaped half shaft sleeve 17, and the cutting edges of the two width adjustment blades 174 are arranged oppositely.

[0052] Specifically, an installation groove is formed at the bottom of the arc-shaped half shaft sleeve 17, and the arc-shaped half shaft sleeve 17 has the same symmetry plane as the installation groove. The positioning post 173 is arranged at the center position of the installation groove, and a threaded hole is also arranged in the installation groove for fixedly connecting the width adjustment blade 174. The length of the installation groove ( Figure 13 the length in the direction indicated by L in

[0053] ) is greater than the length of the width adjustment blade 174.

[0054] In this embodiment, the sliding direction of the first guiding slideway 110 is perpendicular to the central axis of the first mounting sleeve 11, and the two arc-shaped half axle tiles 17 are respectively slidably arranged in the two first guiding slideways 110. Thus, when adjusting the size of the width control slit by adjusting the opening and closing of the two arc-shaped half axle tiles 17, the distance between the generation position of the width control slit and the slit light source remains unchanged all the time, so as to ensure that the focusing plane of the slit light spot remains at the same position, and finally ensure the lighting inspection effect of the eye.

[0055] In addition, as Figure 13 shown, a positioning column 173 is arranged at the bottom of the arc-shaped half axle tile 17, a width adjusting knife 174 is rotatably arranged on the positioning column 173, and the width of the width adjusting knife 174 ( Figure 13 the length in the K direction in the figure) is greater than or equal to the width of the arc-shaped half axle tile 17. Thus, during the assembly process, the width adjusting knife 174 can rotate slightly around the positioning column 173. Then, under the constraint of the elastic holding member, the cutting edges of the two adjusting knives face each other, and the cutting edges are completely fitted by rotating their own angles to achieve the effect of automatic tool alignment. Then, in this posture, the bottom width adjusting knife 174 of the arc-shaped half axle tile 17 is completely fixedly connected to avoid light leakage during use.

[0056] Two adjusting rollers 172 are respectively rotatably arranged on the outer side walls of the two arc-shaped half axle tiles 17, and two outer side walls of the wedge-shaped adjusting block 18 are respectively abutted against the two adjusting rollers 172 for driving the two adjusting rollers 172 to move along the sliding direction of the first guiding slideway 110. The driving module is connected to the wedge-shaped adjusting block 18 for driving the wedge-shaped adjusting block 18 to move along the central axis direction.

[0057] Specifically, the adjusting roller 172 includes: a rotating shaft and a rotating wheel.

[0058] The rotating shaft is connected to the outer side wall of the arc-shaped half axle tile 17, and the rotating wheel is rotatably connected to the rotating shaft.

[0059] The wedge-shaped adjusting block 18 includes: a triangular driving part and a cylindrical sliding part.

[0060] The sliding part is fixedly connected to a surface of the driving part close to the inner side wall of the first mounting sleeve 11. A guiding groove is arranged on the side edge of the triangular driving part, and the adjusting roller 172 is rollingly embedded in the guiding groove. The sliding part is slidably embedded in the second guiding slideway of the first mounting sleeve 11, and the sliding direction of the second guiding slideway is parallel to the central axis of the first mounting sleeve 11.

[0061] During actual use, when the wedge-shaped adjusting block 18 moves downward, it will press the two adjusting rollers 172 to move away from each other, thereby increasing the width of the gap to widen the width of the slit light.

[0062] The elastic retaining member is connected between two arc-shaped half shaft tiles 17, or between the arc-shaped half shaft tile 17 and the inner side wall of the first placement sleeve 11, and is used to drive the two width adjustment knives 174 to approach each other. In this embodiment, the elastic retaining member is a spring 19.

[0063] Specifically, there are two ways to set the elastic retaining member as follows:

[0064] One is, as Figure 7 and Figure 8 shown, the elastic retaining member is connected between two arc-shaped half shaft tiles 17:

[0065] Both ends of the spring 19 are respectively connected to the connecting columns of the two arc-shaped half shaft tiles 17, and the spring 19 is in a stretched state. The spring 19 in this setting method can also be replaced by a rubber rope 16.

[0066] However, in this structure, when the two arc-shaped half shaft tiles 17 are opened and closed, due to the distance between the force generated by the elastic retaining member and the force generated by the wedge-shaped adjustment block 18, it is easy for the two arc-shaped half shaft tiles 17 to rotate relative to each other. Therefore, in order to limit the occurrence of rotation, a sliding structure of a set of shaft tile sliders 171 cooperating with the first guiding slideway 110 is additionally provided at a position close to the bottom of the arc-shaped half shaft tile 17, and as Figure 10 shown, the interval between the two shaft tile sliders 171 close to the bottom of the arc-shaped half shaft tile 17 is greater than the interval between the two shaft tile sliders 171 close to the top of the arc-shaped half shaft tile 17 ( Figure 10 the distance in the W direction in

[0067] The other is, as Figure 11 and Figure 12 shown, the elastic retaining member is connected between the arc-shaped half shaft tile 17 and the inner side wall of the first placement sleeve 11:

[0068] At this time, two springs 19 are provided. Both ends of each spring 19 are respectively abutted against the rotating shaft and the inner side wall of the first placement sleeve 11, and the spring 19 is in a compressed state.

[0069] In addition, as Figure 12 shown, in this structural solution, the end of the rotating shaft is equivalent to the shaft tile slider 171. In addition, in order to further ensure the sliding stability of the two arc-shaped half shaft tiles 17, a first guiding slideway 110 can be additionally provided at this position, so that the end of the rotating shaft can be slidably arranged in this first guiding slideway 110.

[0070] In this form of elastic retaining member setting, the position where the elastic force is applied can be more precisely coincident with the positions where the two width adjustment knives 174 are provided. Thus, the alignment effect of the two cutting edges can be more effectively ensured by the elastic force of the spring 19, and the tendency of the arc-shaped half axle tile 17 to rotate can be minimized to ensure the smooth sliding of the two arc-shaped half axle tiles 17 in the first guiding slideway 110.

[0071] As Figure 6 , Figure 9 and Figure 10 shown, the drive module includes: a second placement sleeve 10, a worm gear 14, a worm 13, an adjusting rod 15 and a pressure rod sleeve 12.

[0072] The second placement sleeve 10 is fixedly sleeved on the top of the first placement sleeve 11. The second placement sleeve 10 and the first placement sleeve 11 are coaxially arranged.

[0073] The worm gear 14 is rotatably arranged coaxially inside the second placement sleeve 10, and a spiral slideway is provided on the inner side wall of the worm gear 14. The worm 13 is rotatably arranged perpendicular to the axis on the side wall of the second placement sleeve 10, and the worm gear 14 meshes with the worm 13.

[0074] As Figure 6 and Figure 7 shown, the pressure rod sleeve 12 includes a pressure rod top plate, a lifting sleeve and a limit block 120.

[0075] The pressure rod top plate is fixedly connected to the outer side wall of the lifting sleeve, and the limit block 120 is fixedly arranged at the edge of the pressure rod top plate. A spiral slideway is provided on the outer side wall of the lifting sleeve, and the spiral slide rail is embedded in the spiral slide. The limit block 120 is slidably arranged in the third guiding slideway 101 on the inner side wall of the second placement sleeve 10, and the sliding direction of the third guiding slideway 101 is parallel to the central axis of the second placement sleeve 10.

[0076] One end of the adjusting rod 15 is spherical, and this end abuts against the pressure rod top plate to reduce the friction with the pressure rod top plate. A thread is provided at the other end of the adjusting rod 15, and it is connected to the wedge-shaped adjusting block 18 through the thread. Moreover, a spring 19 is sleeved on the adjusting rod 15. One end of the spring 19 abuts against the spherical head, and the other end abuts against the wedge-shaped adjusting block 18 to ensure the connection stability between the adjusting rod 15 and the wedge-shaped adjusting block 18 and reduce the shaking.

[0077] By rotating the worm 13, the worm gear 14 can be driven to rotate inside the second placement sleeve 10. Then, through the mutual cooperation of the spiral slideway and the spiral slide rail, the pressure rod sleeve 12 is driven to rise and fall, and further the wedge-shaped adjusting block 18 is driven to perform a lifting movement through the adjusting rod 15.

[0078] As another embodiment of the present invention, asFigures 14 to 19 As shown, a device for adjusting the color and length of slit light is also provided. This device can be the device inside the lighting tower 5 in the above embodiment for adjusting the color and length of slit light.

[0079] Specifically, the device for adjusting the color and length of slit light includes: a third placement sleeve 30, a color adjustment turntable 34, a length adjustment turntable 33, a partition 35, a placement rotating shaft, and a gear position adjustment module.

[0080] The third placement sleeve 30 is rotatably sleeved coaxially outside the second placement sleeve 10.

[0081] The color adjustment turntable 34 and the length adjustment turntable 33 are rotatably sleeved coaxially on the placement rotating shaft. The partition 35 is clamped between the color adjustment turntable 34 and the length adjustment turntable 33. The partition 35 is fixedly connected inside the third placement sleeve 30 and is stationary relative to the color adjustment turntable 34 and the length adjustment turntable 33. An elastic member avoidance through groove 351 and a light avoidance through groove 350 are provided on the partition 35.

[0082] Specifically, as Figure 15 shown, a plurality of length adjustment holes are provided along the circumferential direction on the bottom plate of the length adjustment turntable 33, and the sizes of the plurality of length adjustment holes are different. By rotating the length adjustment turntable 33, length adjustment holes with different diameters can be located on the input optical path of the slit light source to screen the diameter of the light that can pass through, thereby adjusting the length of the slit light.

[0083] Among the plurality of length adjustment holes, there are a plurality of circular adjustment holes 330, and the aperture sizes of the plurality of circular adjustment holes 330 are different. The plurality of circular adjustment holes 330 are used to achieve multi-gear independent adjustment of the length of the slit light.

[0084] Among the plurality of length adjustment holes, there is also a special-shaped adjustment hole 331. The special-shaped adjustment hole 331 includes two arc-shaped ends arranged at intervals, the sizes of the two arc-shaped ends are different, and the two arc-shaped ends are connected by two arc-shaped side walls for transition. The special-shaped adjustment hole 331 is used to achieve continuous stepless adjustment of the length of the slit light.

[0085] Moreover, the inner side wall of the length adjustment hole has a taper, and the opening size of the side where the slit light enters the length adjustment hole is larger than the opening size of the side where the slit light exits.

[0086] Since the inner side wall of the length adjustment hole has a taper, when light passes through, if the light at the edge has a certain inclination angle, it will be reflected back by the inclined surface at the taper. Thus, the stray light with an inclined direction in the edge of the light column after passing through can be further eliminated, and only the edge of the finally formed light spot is ensured to be sharper and clearer.

[0087] On the bottom plate of the color adjustment wheel 34, a plurality of color adjustment holes 341 are provided along the circumferential direction, and color filter glasses of different colors are installed in each color adjustment hole 341.

[0088] The gear position adjustment module is arranged on the partition plate 35 and is respectively in contact with the inner side walls of the color adjustment wheel 34 and the length adjustment wheel 33. The gear position adjustment module is used to lock the rotation angles of the color adjustment wheel 34 and the length adjustment wheel 33. The gear position adjustment module includes: two gear position arms and an elastic holding member.

[0089] As Figure 19 shown, the two gear position arms are respectively rotatably arranged on the front and back surfaces of the partition plate 35 through rotating shafts. The elastic holding member is connected to the tail ends of the two gear position arms. The elastic holding member is used to make the two gear position arms have a tendency to rotate around the axis through elastic force, so that the head ends of the two gear position arms respectively abut against the inner side walls of the length adjustment wheel 33 and the color adjustment wheel 34. Specifically, in this embodiment, the elastic holding member can be a spring 19 or an elastic rubber cord 16.

[0090] Specifically, as Figure 15 and Figure 16 shown, the gear position arm includes: a first arm 360 and a second arm 361.

[0091] The first arm 360 and the second arm 361 are connected at an angle. A rotating through hole is provided at the connecting portion of the first arm 360 and the second arm 361, and the rotating shaft rotates through the rotating through hole, so that the gear position arm can rotate freely around the axis. The non-connecting end of the first arm 360 is the head end of the gear position arm, and a bearing (i.e., the adjusting end head 362) is provided on the head end of the gear position arm. The non-connecting end of the second arm 361 is the tail end of the gear position arm, and a connecting rod is provided on the tail end of the gear position arm. The elastic holding member is connected to the connecting rod.

[0092] At least one clamping groove 340 is provided on the inner side walls of the length adjustment wheel 33 and the color adjustment wheel 34.

[0093] Specifically, as Figure 17 and Figure 18 shown, the length adjustment wheel 33 and the color adjustment wheel 34 can be accurately positioned at the corresponding gear positions of the structure by the clamping restriction between the clamping groove 340 and the adjusting end head 362 for easy use.

[0094] In the gear adjustment module of this embodiment, two gear crank arms are respectively rotated and set on the front and back surfaces of the partition 35, and an elastic retainer is used to connect and constrain the tail ends of the two gear crank arms, and then under the pulling constraint of the elastic force of the elastic retainer, the head ends of the two gear crank arms can be respectively set against the inner wall of the length adjustment wheel 33 and the color adjustment wheel 34. Then, the gear adjustment of the two adjustment wheels is independently limited by the friction between the end of the gear crank arm and the inner wall of the adjustment wheel. The two gear crank arms in the gear adjustment module are mutually constrained by the elastic retainer, and their respective ends can be independently controlled to conflict with the adjustment wheel. The structural design is more ingenious and simple, occupies less space, involves fewer components, and the component structure is also simpler.

[0095] The adjustment device in this embodiment not only does not affect the independent operation of the color adjustment wheel 34 and the length adjustment wheel 33, but also can place the gear adjustment module in the cavity formed by the snap fit between the color adjustment wheel 34 and the length adjustment wheel 33, thereby further reducing space occupancy and simplifying the structure.

[0096] As another embodiment of the present invention, a slit light adjustment wheel is also provided, and the adjustment wheel can be the length adjustment wheel 33 and the color adjustment wheel 34 in the above embodiments.

[0097] Specifically, Figure 17 and Figure 18 As shown, a slit light adjustment wheel comprises: a circular bottom plate and an annular side wall arranged along the edge of the bottom plate.

[0098] The outer side of the annular side wall is provided with a shifting gear. The inner side of the annular side wall is provided with at least one locking groove 340. A rotating shaft through hole is provided at the center of the circular bottom plate. The adjustment end 362 in the gear adjustment module is elastically abutted against the inner side of the adjustment wheel. The locking groove 340 is used to limit the movement of the adjustment end 362. The adjustment end 362 is a circular end, such as the adjustment end 362 can be a roller.

[0099] like Figure 18 As shown, the positioning groove 340 includes a limiting main groove 342 and two lead-in sub-grooves 343. The two lead-in sub-grooves 343 are symmetrically connected to the two ends of the limiting main groove 342. The groove depth of the lead-in sub-grooves 343 (as shown in FIG. Figure 18 The length in the direction indicated by S in the figure gradually deepens from the end away from the limiting main groove 342 to the end connected to the limiting main groove 342, and the minimum groove depth of the limiting main groove 342 is greater than the maximum groove depth of the introduction sub-groove 343.

[0100] The inner side wall of the adjustment wheel in this embodiment will elastically abut against the adjustment end 362 in the gear adjustment module, so that there will be a certain friction damping when the adjustment wheel is turned, and thus a certain rotation feel can be provided. At the same time, a locking groove 340 is provided on the inner side wall of the adjustment wheel, and the depth of the locking groove 340 conforms to the rule of changing from shallow to deep and then to shallow again, so that the friction force of the adjustment end 362 when passing through the locking groove 340 will also change from large to small and then to large, and thus a rotation feel corresponding to the change rule can be provided, so that when the user turns the adjustment wheel, he can determine the shift position by hand feeling, which is convenient for use.

[0101] Furthermore, the limiting main groove 342 and the introduction sub-groove 343 are both arc-shaped grooves, and the diameter corresponding to the limiting main groove 342 is smaller than the diameter corresponding to the introduction sub-groove 343. The diameter corresponding to the limiting main groove 342 is greater than or equal to the diameter of the adjustment end 362. By setting the curvature relationship between the limiting main groove 342, the introduction sub-groove 343 and the adjustment end 362, the adjustment end 362 can have a more obvious sense of stuck when it moves to the position of the limiting main groove 342, further ensuring the accuracy of the adjustment.

[0102] In addition, it also includes a placement shell, that is, a third placement sleeve 30. The adjusting wheel is rotatably embedded in the placement shell, such as Figure 14 As shown, a plurality of adjustment windows 31 are provided in the circumferential direction of the outer wall of the housing for adjusting the gear teeth. A rotating connection bracket 32 ​​is provided on the outer wall of the housing, and the rotating connection bracket 32 ​​is used to be rotatably connected with the micro-motion platform 6 to ensure that the irradiation angle of the slit light can be greatly rotated. At the same time, during the rotation process, the lighting tower 5 may block and interfere with other component structures, thereby making the adjustment window 31 at the corresponding position unavailable. Therefore, a plurality of adjustment windows 31 are provided in this embodiment to facilitate the subsequent adjustment of the corresponding wheel.

[0103] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A slit lamp, characterized in that: include: Lifting table, face holder, lighting tower, control base, micro-motion platform, image acquisition unit and display; The control base is arranged on the desktop of the lifting and placing table; the micro-motion platform and the face fixer are both arranged on the control base, and the micro-motion platform moves relative to the plane where the control base is located; The lighting tower and the image acquisition unit are both rotatably arranged on the micro-motion platform, the rotation axes of the lighting tower and the image acquisition unit are the same, and the lighting tower and the image acquisition unit remain relatively stationary; the image acquisition unit is used to acquire an eye image of the tester; The display is connected to the lifting and placing table, and the display is electrically connected to the image acquisition unit for displaying the target image.

2. A slit lamp according to claim 1, characterized in that: The micro-motion platform comprises two rack slide rails, a gear connecting shaft and a sliding sleeve; The gears at both ends of the gear connecting shaft are respectively meshed with the racks in the two rack slide rails; The sliding sleeve is slidably mounted on the gear connecting shaft.

3. A slit lamp according to claim 1, characterized in that: The display is connected to the lifting and placing table through a multi-section adjustment arm.

4. A slit lamp according to claim 1, characterized in that: A plurality of universal wheels are arranged at the bottom of the lifting and placing table, and a plurality of handles are arranged on the desktop of the lifting and placing table.

5. A slit lamp according to claim 1, characterized in that: A fill light is arranged above the face fixer.

6. A slit lamp according to claim 5, characterized in that: The lighting tower comprises: Color adjustment wheel, length adjustment wheel, partition, placement shaft, placement housing and gear adjustment module; The color adjustment wheel and the length adjustment wheel are coaxially rotatably sleeved on the placement shaft, the placement shaft is arranged in the placement shell, a rotation connection bracket is arranged on the outer side wall of the placement shell, and the rotation connection bracket is rotatably arranged on the micro-motion platform; The partition is sandwiched between the color adjustment wheel and the length adjustment wheel, and the partition is stationary relative to the color adjustment wheel and the length adjustment wheel, and an elastic member avoidance slot and a light avoidance slot are provided on the partition; The gear adjustment module is arranged on the partition plate and is respectively arranged to abut against the inner side walls of the color adjustment wheel and the length adjustment wheel; the gear adjustment module is used to lock the rotation angle of the color adjustment wheel and the length adjustment wheel; The gear adjustment module comprises: Two gear crank arms and elastic retaining members; The two gear crank arms are respectively rotatably arranged on the front and back surfaces of the partition through a rotating shaft; The elastic retaining member is connected to the tail ends of the two gear crank arms, and the elastic retaining member is used to make the two gear crank arms have a tendency to rotate around the axis through elastic force, so that the head ends of the two gear crank arms are respectively against the inner side walls of the length adjustment wheel and the color adjustment wheel.

7. A slit lamp according to claim 6, characterized in that: The gear crank arm comprises: A first arm and a second arm, wherein the first arm and the second arm are connected at an angle, a rotation hole is provided at a connection portion between the first arm and the second arm, and the rotation shaft is rotatably disposed in the rotation hole; The non-connected end of the first support arm is the head end of the gear crank arm, and a bearing is provided on the head end of the gear crank arm; The non-connected end of the second support arm is the tail end of the gear crank arm, a connecting rod is arranged on the tail end of the gear crank arm, and the elastic retaining member is connected to the connecting rod.

8. A slit lamp according to claim 6, characterized in that: The color adjustment wheel and the length adjustment wheel are both embedded in the placement shell, and a plurality of adjustment windows are opened in the circumferential direction of the outer side wall of the placement shell for rotating the adjustment wheel.

9. A slit lamp according to claim 6, characterized in that: The lighting tower also includes: The first placement sleeve, the wedge-shaped adjustment block, the drive module, the elastic retainer, two arc-shaped half-bearings, two width adjustment knives and two adjustment rollers; The first placement sleeve is rotatably arranged on the top of the placement shell, and two first guide slideways are arranged in parallel on the inner side wall of the first placement sleeve, and the sliding direction of the first guide slideway is perpendicular to the central axis of the first placement sleeve; The two arc-shaped half-bearings are respectively slidably arranged in the two first guide slideways, and the two arc-shaped half-bearings are arranged opposite to each other; The two width adjustment knives are respectively connected to the bottom of the two arc-shaped half-bearings, and a positioning column is arranged at the bottom of the arc-shaped half-bearings, and the width adjustment knives are rotatably arranged on the positioning column; the width of the width adjustment knives is greater than or equal to the width of the arc-shaped half-bearings, and the blades of the two width adjustment knives are arranged opposite to each other; The two adjusting rollers are rotatably arranged on the outer side walls of the two arc-shaped half-bearings respectively, and the two outer side walls of the wedge-shaped adjusting block are respectively arranged on the two adjusting rollers, and are used to drive the two adjusting rollers to move along the sliding direction of the first guide slideway; the driving module is connected to the wedge-shaped adjusting block, and is used to drive the wedge-shaped adjusting block to move along the central axis direction; The elastic retaining member is connected between the two arc-shaped half-bearing shells, or between the arc-shaped half-bearing shells and the inner side wall of the first placement sleeve, and is used to drive the two width adjustment knives to approach each other.

10. A slit lamp according to claim 9, characterized in that: The driving module comprises: The second placement sleeve, worm wheel, worm, adjusting rod and pressure rod sleeve; The second placement sleeve is fixedly sleeved on the top of the first placement sleeve; the second placement sleeve and the first placement sleeve are coaxially arranged; The worm wheel is coaxially rotatably arranged inside the second placement sleeve, and a spiral slide rail is arranged on the inner side wall of the worm wheel; the worm is rotatably arranged on the side wall of the second placement sleeve perpendicular to the axis, and the worm wheel is meshed with the worm; The pressure rod sleeve comprises a pressure rod top plate, a lifting sleeve and a limit block; The pressure rod top plate is fixedly connected to the outer side wall of the lifting sleeve, and the limit block is fixedly arranged at the edge of the pressure rod top plate; a spiral slide is arranged on the outer side wall of the lifting sleeve, and the spiral slide is embedded in the spiral slide; the limit block is slidably arranged in the third guide slide on the inner side wall of the second placement sleeve, and the sliding direction of the third guide slide is parallel to the central axis of the second placement sleeve; One end of the adjusting rod is disposed against the top plate of the pressure rod, and the other end of the adjusting rod is connected to the wedge-shaped adjusting block.

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