Calibration device for ophthalmology imaging equipment

Abstract

The invention discloses a calibration device for ophthalmology imaging equipment, and relates to the technical field of ophthalmology instruments.The calibration device comprises a supporting plate, the upper portion of the supporting plate is fixedly connected with the imaging equipment, the side, close to the imaging equipment, of the supporting plate is fixedly connected with a box, the box is fixedly connected with the imaging equipment, and the upper portion of the box is movably connected with an arc-shaped supporting plate; a calibration assembly is arranged on the box body and comprises a first connecting column, a second connecting column, an arc-shaped supporting block and a roll shaft which are symmetrically and movably connected to the upper portion of the box body, and a first movable plate and a second movable plate which are movably connected to the interior of the box body, the jaw is placed on the arc-shaped supporting block and the roll shaft, and self adjustment is achieved through the calibration assembly. The two-dimensional head bearing and adjusting equipment is simple in structure, does not need to be adjusted by a worker, and can quickly complete eye calibration through rough adjustment and calibration of the two-dimensional head bearing and adjusting equipment, so that frequent adjustment and correction are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmic instruments, and in particular to a calibration device for ophthalmic imaging equipment. Background Art

[0002] Ophthalmology is an important branch of medicine that focuses on eye health, disease prevention, diagnosis and treatment. It covers a wide range of aspects, from basic examinations of eyelids, conjunctiva, cornea, lens, retina and other eye structures to complex surgeries such as cataract removal, glaucoma laser surgery, vitrectomy and correction of refractive errors (myopia, hyperopia, astigmatism).

[0003] Calibration of ophthalmic imaging equipment is a key step in ensuring diagnostic accuracy and treatment effectiveness. It involves fine-tuning the internal parameters of the equipment and external environmental factors to ensure that the acquired eye images have high clarity, accurate proportions and true colors. This process usually includes adjusting the focus, alignment, resolution of the optical system, and correcting image distortion, brightness, contrast and other parameters to ensure that the equipment can capture subtle changes and abnormal features of the eye structure.

[0004] At present, when ophthalmic imaging equipment is collecting information about the patient's eyes, most patients directly face their eyes to the shooting structure on the imaging equipment. During this process, the staff nearby needs to adjust the patient's head position to ensure that the patient's eyes are facing the shooting structure on the imaging equipment. The operation process is relatively cumbersome, and when the collection time is too long, the patient's neck will become sore, causing the patient's eyes to be dislocated, resulting in failure of information collection. The traditional two-dimensional head load-bearing adjustment device uses the horizontal movement and vertical lifting drive mechanism on the workbench to achieve two-dimensional movement of the patient's head, and finally completes the positioning of the patient's head and eyes. However, during the use of the above design, it is necessary to obtain feedback information from the patient whether the current adjustment is appropriate only after the horizontal movement and vertical lifting drive mechanism are adjusted. Therefore, frequent adjustment and correction are required. Therefore, a calibration device for ophthalmic imaging equipment is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art that the patient's head position needs to be adjusted by the staff nearby, the patient's neck will feel sore when the acquisition time is too long, causing the patient's eyes to be dislocated, and the traditional two-dimensional head-bearing adjustment equipment needs frequent adjustment and correction. A calibration device for ophthalmic imaging equipment is proposed to solve the problems in the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A calibration device for ophthalmic imaging equipment comprises a support plate, wherein the upper part of the support plate is fixedly connected to the imaging equipment, the side of the support plate close to the imaging equipment is fixedly connected to the box, the box and the imaging equipment are fixedly connected, the upper part of the box is movably connected to the arc-shaped support plate, and the box is provided with a calibration component, wherein the calibration component comprises a first connecting column, a second connecting column and an arc-shaped support block, a roller shaft, which are symmetrically and movably connected at the upper part of the box, and a first movable plate and a second movable plate movably connected inside the box, a chin is placed on the arc-shaped support block and the roller shaft, and the chin can be moved left and right on the arc-shaped support block through the roller shaft, and a slight downward pressure during the left and right movement of the chin can make the arc-shaped support block tilted, and the tilted angle of the arc-shaped support block is squeezed by the second connecting column and the first connecting column to squeeze the first movable plate, so that the side of the first movable plate subjected to force squeezes the second movable plate, and the second movable plate is slightly tilted in the direction of the squeezing force, so that the first movable plate drives the arc-shaped support block and the arc-shaped support plate to slide on the inclined second movable plate, so that the first movable plate drives the head placed on the arc-shaped support block to perform preliminary left and right adjustment and calibration.

[0008] The box body is provided with an auxiliary component, which includes a connecting rod and a rack symmetrically and movably connected at the upper part of the box body, and a limit plate symmetrically and movably connected at the upper part of the box body. After the arc support block is initially calibrated, the chin is slightly lifted, and the arc support block and the fifth spring return to their original state, so that the chin is placed in the center position on the arc support block. At this time, the chin is pressed down hard, driving the arc support block and the arc support plate to be squeezed downward, and the downward squeezing of the arc support plate drives the rack, and the downward movement of the rack drives the two connecting rods to move towards each other, and the two connecting rods moving towards each other drive the limit plate to limit the head placed on the arc support block.

[0009] The above technical solution further includes:

[0010] A slide groove is fixedly connected to the upper part of the box body, and a third connecting column is slidably connected to the outer side of the slide groove, and an end of the third connecting column close to the box body is fixedly connected to a limiting rod, and the limiting rod is slidably connected to the slide groove, and an end of the third connecting column close to the slide groove is movably connected to a ball, and the ball is movably connected to the slide groove, and the third connecting column slides in the slide groove, and the third connecting column is limited by the limiting rod.

[0011] A fourth spring is fixedly connected inside the third connecting column, and a fourth connecting column is fixedly connected to one end of the fourth spring away from the box body. The fourth connecting column is fixedly connected to the arc-shaped support plate, and the fourth connecting column is slidably connected to the third connecting column. The fourth connecting column is squeezed by the squeezing force to squeeze the fourth spring, so that the fourth connecting column moves inside the third connecting column.

[0012] A fifth spring is symmetrically fixedly connected inside the box body, and the fifth spring is fixedly connected to the second movable plate. A limiting groove is symmetrically provided on one side of the second movable plate away from the fifth spring, and the squeezed second movable plate returns to its original state through the fifth spring.

[0013] A side of the first movable plate close to the second movable plate is movably connected with multiple rollers, and the multiple rollers are slidably connected to the limiting grooves. A side of the first movable plate away from the rollers is movably connected to the first connecting column. The first movable plate is supported by the rollers, so that the first movable plate can slide easily in the limiting groove.

[0014] The first connecting column is movably connected to the second connecting column, a third spring is fixedly connected inside the first connecting column, one end of the third spring close to the arc-shaped support plate is fixedly connected to the second connecting column, the second connecting column is movably connected to the arc-shaped support plate, and the squeezed second connecting column squeezes the third spring and slides inside the first connecting column.

[0015] A fixing rod is fixedly connected to the outer side of the arc support plate, the fixing rod is movably connected to the arc support block, the arc support block is movably connected to the roller shaft, and a second spring is symmetrically fixedly connected to the outer side of the arc support block, and two of the second springs are fixedly connected to the arc support plate, and the arc support block is movable within a certain range by being restricted by the fixing rod.

[0016] The arc support plate is fixedly connected to the rack, and a fixed plate is symmetrically and movably connected to the outer side of the arc support plate. Gears are rotatably connected to the outer sides of the two fixed plates. The fixed plate and the box body are movably connected. The arc support plate squeezed downward drives the rack to push the gears on both sides. The gears are restricted by the fixed plate, so that the rack and the fixed plate are meshed.

[0017] The gear is meshed with the rack, the gear is fixedly connected to the connecting rod, the end of the connecting rod away from the gear is movably connected with a push rod, the outer side of the arc-shaped support plate is symmetrically fixedly connected to a limiting ring, the push rod and the limiting ring are movably connected, and the rotation of the gear drives the two connecting rods to move in opposite directions.

[0018] The pushing rod is movably connected to the limiting plate, a first spring is fixedly connected to a side of the limiting plate close to the pushing rod, an end of the first spring away from the limiting plate is fixedly connected to the limiting ring, and the limiting plate is buffered by the first spring so that the limiting plate can buffer and limit the head.

[0019] The present invention has the following beneficial effects:

[0020] 1. In the present invention, the first movable plate is squeezed by the activity of the arc-shaped support block in the calibration component, so that the first movable plate drives the head placed on the arc-shaped support block to perform preliminary left and right adjustment and calibration, thereby realizing self-adjustment without the need for adjustment by staff. Moreover, through its own preliminary adjustment and calibration, the two-dimensional head-bearing adjustment device can quickly complete the calibration of the eyes, reducing frequent adjustment corrections.

[0021] 2. In the present invention, the arc-shaped support block in the auxiliary component is pressed down by the chin, which drives the limit plate to move in the opposite direction to limit the head placed on the arc-shaped support block, thereby solving the problem that when the collection time is too long, the patient's neck will feel sore, causing the patient's eyes to be dislocated and causing information collection failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of a calibration device for ophthalmic imaging equipment proposed by the present invention;

[0023] Figure 2 It is a schematic diagram of the overall top structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the front structure of the calibration component in the present invention;

[0025] Figure 4 It is a schematic diagram of the rear structure of the calibration component in the present invention;

[0026] Figure 5 It is a front cross-sectional structural schematic diagram of the calibration component in the present invention;

[0027] Figure 6 It is a schematic diagram of the side cross-sectional structure of the calibration component in the present invention;

[0028] Figure 7 for Figure 6 A schematic diagram of the enlarged structure in the middle.

[0029] In the figure: 1. support plate; 2. imaging device; 3. box; 4. arc-shaped support plate; 5. slide groove; 6. first connecting column; 7. second connecting column; 8. third connecting column; 9. fourth connecting column; 10. gear; 11. connecting rod; 12. push rod; 13. limit ring; 14. first spring; 15. limit plate; 16. arc-shaped support block; 17. roller; 18. second spring; 19. fixed rod; 20. rack; 21. third spring; 22. fourth spring; 23. first movable plate; 24. roller; 25. limit groove; 26. second movable plate; 27. fixed plate; 28. fifth spring; 29. ​​limit rod; 30. ball. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] like Figure 1-Figure 7 As shown, a calibration device for ophthalmic imaging equipment proposed by the present invention comprises a support plate 1, an imaging device 2 is fixedly connected to the upper part of the support plate 1, a box 3 is fixedly connected to the side of the support plate 1 close to the imaging device 2, the box 3 and the imaging device 2 are fixedly connected, an arc-shaped support plate 4 is movably connected to the upper part of the box 3, a calibration component is arranged on the box 3, the calibration component comprises a first connecting column 6, a second connecting column 7 and an arc-shaped support block 16, a roller shaft 17 symmetrically movably connected to the upper part of the box 3, and a first movable plate 23 and a second movable plate 26 movably connected inside the box 3, a chin is placed on the arc-shaped support block 16 and the roller shaft 17, The chin can be moved left and right on the arc-shaped support block 16 through the roller 17. A slight downward pressure during the left and right movement of the chin can tilt the angle of the arc-shaped support block 16. The tilted angle of the arc-shaped support block 16 squeezes the first movable plate 23 through the second connecting column 7 and the first connecting column 6, so that the side of the first movable plate 23 that is subjected to force squeezes the second movable plate 26. The second movable plate 26 will be slightly tilted in the direction of the squeezing force, so that the first movable plate 23 drives the arc-shaped support block 16 and the arc-shaped support plate 4 to slide on the inclined second movable plate 26, so that the first movable plate 23 drives the head placed on the arc-shaped support block 16 to perform preliminary left and right adjustment and calibration.

[0033] An auxiliary component is provided on the box body 3, and the auxiliary component includes a connecting rod 11 and a rack 20 symmetrically and movably connected at the upper part of the box body 3, and a limit plate 15 symmetrically and movably connected at the upper part of the box body 3. After the arc support block 16 is initially calibrated, the chin is slightly lifted, and the arc support block 16 and the fifth spring 28 return to their original state, so that the chin is placed in the center position on the arc support block 16. At this time, the chin is pressed down hard, driving the arc support block 16 and the arc support plate 4 to be squeezed downward, and the downward squeezing of the arc support plate 4 drives the rack 20, and the downward movement of the rack 20 drives the two connecting rods 11 to move in opposite directions, and the two connecting rods 11 moving in opposite directions drive the limit plate 15 to limit the head placed on the arc support block 16.

[0034] A slide groove 5 is fixedly connected to the upper part of the box body 3, and a third connecting column 8 is slidably connected to the outer side of the slide groove 5. The end of the third connecting column 8 close to the box body 3 is fixedly connected to a limiting rod 29, and the limiting rod 29 is slidably connected to the slide groove 5. The end of the third connecting column 8 close to the slide groove 5 is movably connected to a ball 30, and the ball 30 is movably connected to the slide groove 5. The third connecting column 8 slides in the slide groove 5, and the third connecting column 8 is limited by the limiting rod 29.

[0035] A fourth spring 22 is fixedly connected inside the third connecting column 8, and a fourth connecting column 9 is fixedly connected to one end of the fourth spring 22 away from the box body 3. The fourth connecting column 9 is fixedly connected to the arc-shaped support plate 4, and the fourth connecting column 9 is slidably connected to the third connecting column 8. The fourth connecting column 9 is squeezed by the extrusion force to squeeze the fourth spring 22, so that the fourth connecting column 9 moves inside the third connecting column 8.

[0036] A fifth spring 28 is symmetrically fixedly connected inside the box body 3, and the fifth spring 28 is fixedly connected to the second movable plate 26. A limiting groove 25 is symmetrically provided on one side of the second movable plate 26 away from the fifth spring 28. The squeezed second movable plate 26 returns to its original state after passing through the fifth spring 28.

[0037] A side of the first movable plate 23 close to the second movable plate 26 is movably connected with multiple rollers 24, and the multiple rollers 24 are slidably connected to the limiting grooves 25. The side of the first movable plate 23 away from the rollers 24 is movably connected to the first connecting column 6. The first movable plate 23 is supported by the rollers 24, so that the first movable plate 23 can slide easily in the limiting grooves 25.

[0038] The first connecting column 6 is movably connected to the second connecting column 7, and a third spring 21 is fixedly connected inside the first connecting column 6. One end of the third spring 21 close to the arc-shaped support plate 4 is fixedly connected to the second connecting column 7. The second connecting column 7 is movably connected to the arc-shaped support plate 4. The squeezed second connecting column 7 squeezes the third spring 21 and slides inside the first connecting column 6.

[0039] A fixing rod 19 is fixedly connected to the outer side of the arc support plate 4, the fixing rod 19 and the arc support block 16 are movably connected, the arc support block 16 and the roller shaft 17 are movably connected, and a second spring 18 is symmetrically fixedly connected to the outer side of the arc support block 16, and the two second springs 18 are fixedly connected to the arc support plate 4, and the arc support block 16 is movable within a certain range by being restricted by the fixing rod 19.

[0040] In this embodiment, the patient places the chin on the arc support block 16 and the roller 17, and the patient drives the arc support block 16 and the roller 17 to move left and right according to the direction of the eye deviation detected by the imaging device 2. The chin can be moved left and right on the arc support block 16 through the roller 17. During the left and right movement of the chin, a slight downward pressure can tilt the arc support block 16. The tilted angle of the arc support block 16 is caused by the second connecting column 7 squeezing the third spring 21, and the third spring 21 squeezes the first connecting column 6. The first connecting column 6 transmits the force to the first movable plate 23. The side of the first movable plate 23 that is subjected to the force squeezes the second movable plate 26, and the second movable plate 26 is slightly tilted in the direction of the squeezing force.

[0041] The first movable plate 23 is made to slide in the limiting groove 25 on the second movable plate 26 through the roller 24, so that the first movable plate 23 drives the arc support block 16 and the arc support plate 4 to slide on the inclined second movable plate 26. At this time, the arc support plate 4 is subjected to the downward force of the arc support block 16 and will squeeze the fourth spring 22 through the fourth connecting column 9, so that the fourth connecting column 9 moves slightly with the arc support block 16. In the sliding process, the third connecting column 8 will slide on the slide groove 5 with the arc support block 16, and the ball 30 at the end of the third connecting column 8 will contact the slide groove 5 to reduce the sliding friction, and the third connecting column 8 is restricted in the slide groove 5 through the limiting rod 29, so that the first movable plate 23 drives the head placed on the arc support block 16 to perform preliminary left and right adjustment and calibration.

[0042] Embodiment 2

[0043] like Figure 1-Figure 7 As shown, based on the first embodiment, the arc support plate 4 is fixedly connected to the rack 20, and the outer side of the arc support plate 4 is symmetrically and movably connected with the fixed plate 27. The outer sides of the two fixed plates 27 are rotatably connected with the gears 10. The fixed plates 27 are movably connected to the box body 3. The arc support plate 4 squeezed downward drives the rack 20 to push the gears 10 on both sides. The gears 10 are restricted by the fixed plates 27, so that the rack 20 and the fixed plates 27 are meshed.

[0044] The gear 10 is meshed with the rack 20, and the gear 10 is fixedly connected to the connecting rod 11. The end of the connecting rod 11 away from the gear 10 is movably connected with a push rod 12. The outer side of the arc-shaped support plate 4 is symmetrically fixedly connected with a limit ring 13. The push rod 12 and the limit ring 13 are movably connected. The rotation of the gear 10 drives the two connecting rods 11 to move in opposite directions.

[0045] The push rod 12 is movably connected to the limit plate 15. A first spring 14 is fixedly connected to the side of the limit plate 15 close to the push rod 12. An end of the first spring 14 away from the limit plate 15 is fixedly connected to the limit ring 13. The limit plate 15 is buffered by the first spring 14 so that the limit plate 15 can buffer and limit the head.

[0046] In this embodiment, as described in the previous step, after the arc support block 16 is initially calibrated, the chin is slightly lifted, and the squeezed second spring 18 and fifth spring 28 rebound the arc support block 16 and the fifth spring 28 to return to their original state. At this time, the chin is placed at the center position on the arc support block 16. At this time, the chin is pressed down hard, driving the arc support block 16 and the arc support plate 4 to be squeezed downward, so that the fourth connecting column 9 and the second connecting column 7 squeeze the fourth spring 22 and the third spring 21 at the same time. At this time, the downward squeezing of the arc support plate 4 drives the rack 20, and the rack 20 The gears 10 on both sides are pushed downward to rotate on the fixed plate 27. At this time, the fixed plate 27 is against the box body 3 to limit the two gears 10 so that the gears 10 can mesh with the rack 20. The rotation of the gear 10 drives the two connecting rods 11 to move in opposite directions. The two connecting rods 11 push the push rod 12 to move in the limiting ring 13, and drive the limiting plate 15 to approach the head placed on the arc-shaped support block 16. The limiting plate 15 can buffer the restriction of the head through the first spring 14 to prevent excessive squeezing. At this time, the head is still and waiting for inspection.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A calibration device for an ophthalmic imaging device, comprising a support plate (1), characterized in that: The upper part of the support plate (1) is fixedly connected to an imaging device (2); a side of the support plate (1) close to the imaging device (2) is fixedly connected to a box (3); the box (3) and the imaging device (2) are fixedly connected; the upper part of the box (3) is movably connected to an arc-shaped support plate (4); a calibration component is arranged on the box (3); the calibration component comprises a first connecting column (6), a second connecting column (7) and an arc-shaped support block (16), and a roller (17) symmetrically movably connected at the upper part of the box (3); and a first movable plate (23) and a second movable plate (26) movably connected inside the box (3); a chin is placed on the arc-shaped support block (16) and the roller (17); and the chin is moved by the roller ( 17) The chin can be moved left and right on the arc-shaped support block (16). During the process of the chin moving left and right, a slight downward pressure can tilt the angle of the arc-shaped support block (16). The tilted angle of the arc-shaped support block (16) is pressed by the second connecting column (7) and the first connecting column (6) to squeeze the first movable plate (23), so that the side of the first movable plate (23) that is subjected to force squeezes the second movable plate (26). The second movable plate (26) is slightly tilted in the direction of the squeezing force, so that the first movable plate (23) drives the arc-shaped support block (16) and the arc-shaped support plate (4) to slide on the tilted second movable plate (26), so that the first movable plate (23) drives the head placed on the arc-shaped support block (16) to perform preliminary left and right adjustment and calibration; The box body (3) is provided with an auxiliary component, which includes a connecting rod (11) and a rack (20) symmetrically and movably connected to the upper part of the box body (3), and a limit plate (15) symmetrically and movably connected to the upper part of the box body (3). After the arc support block (16) is initially calibrated, the chin is slightly lifted, the arc support block (16) and the fifth spring (28) return to their original state, so that the chin is placed in the center position on the arc support block (16). At this time, the chin is pressed down with force, driving the arc support block (16) and the arc support plate (4) to be squeezed downward, and the downward squeezing of the arc support plate (4) drives the rack (20), and the downward movement of the rack (20) drives the two connecting rods (11) to move in opposite directions, and the two connecting rods (11) moving in opposite directions drive the limit plate (15) to limit the head placed on the arc support block (16).

2. A calibration device for ophthalmic imaging equipment according to claim 1, characterized in that: The upper part of the box body (3) is fixedly connected with a slide groove (5), and the outer side of the slide groove (5) is slidably connected with a third connecting column (8), one end of the third connecting column (8) close to the box body (3) is fixedly connected with a limit rod (29), and the limit rod (29) is slidably connected to the slide groove (5), and the end of the third connecting column (8) close to the slide groove (5) is movably connected with a ball (30), and the ball (30) is movably connected to the slide groove (5).

3. A calibration device for ophthalmic imaging equipment according to claim 2, characterized in that: A fourth spring (22) is fixedly connected inside the third connecting column (8), and an end of the fourth spring (22) away from the box body (3) is fixedly connected to a fourth connecting column (9), the fourth connecting column (9) is fixedly connected to the arc-shaped support plate (4), and the fourth connecting column (9) is slidably connected to the third connecting column (8).

4. The calibration device for ophthalmic imaging equipment according to claim 1, characterized in that: A fifth spring (28) is symmetrically fixedly connected inside the box body (3), the fifth spring (28) is fixedly connected to the second movable plate (26), and a limiting groove (25) is symmetrically provided on one side of the second movable plate (26) away from the fifth spring (28).

5. The calibration device for ophthalmic imaging equipment according to claim 4, characterized in that: A side of the first movable plate (23) close to the second movable plate (26) is movably connected to a plurality of rollers (24), and the plurality of rollers (24) are slidably connected to the limiting grooves (25), and a side of the first movable plate (23) away from the rollers (24) is movably connected to the first connecting column (6).

6. The calibration device for ophthalmic imaging equipment according to claim 1, characterized in that: The first connecting column (6) is movably connected to the second connecting column (7); a third spring (21) is fixedly connected inside the first connecting column (6); one end of the third spring (21) close to the arc-shaped support plate (4) is fixedly connected to the second connecting column (7); and the second connecting column (7) is movably connected to the arc-shaped support plate (4).

7. The calibration device for ophthalmic imaging equipment according to claim 1, characterized in that: A fixing rod (19) is fixedly connected to the outer side of the arc-shaped support plate (4); the fixing rod (19) is movably connected to the arc-shaped support block (16); the arc-shaped support block (16) is movably connected to the roller shaft (17); a second spring (18) is symmetrically fixedly connected to the outer side of the arc-shaped support block (16); and two second springs (18) are fixedly connected to the arc-shaped support plate (4).

8. The calibration device for ophthalmic imaging equipment according to claim 1, characterized in that: The arc-shaped support plate (4) is fixedly connected to the rack (20); the outer side of the arc-shaped support plate (4) is symmetrically and movably connected to a fixed plate (27); the outer sides of the two fixed plates (27) are both rotatably connected to a gear (10); and the fixed plate (27) is movably connected to the box body (3).

9. The calibration device for ophthalmic imaging equipment according to claim 8, characterized in that: The gear (10) is meshed with the rack (20), the gear (10) is fixedly connected to the connecting rod (11), one end of the connecting rod (11) away from the gear (10) is movably connected to a push rod (12), the outer side of the arc-shaped support plate (4) is symmetrically fixedly connected to a limit ring (13), and the push rod (12) is movably connected to the limit ring (13).

10. The calibration device for ophthalmic imaging equipment according to claim 9, characterized in that: The push rod (12) is movably connected to the limiting plate (15); a first spring (14) is fixedly connected to a side of the limiting plate (15) close to the push rod (12); and an end of the first spring (14) away from the limiting plate (15) is fixedly connected to the limiting ring (13).

Images