CN111248854A

CN111248854A - Calibration device for ophthalmologic imaging equipment

Info

Publication number: CN111248854A
Application number: CN202010094656.XA
Authority: CN
Inventors: 李春霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-16
Filing date: 2020-02-16
Publication date: 2020-06-09

Abstract

The invention discloses a calibration device for ophthalmologic imaging equipment, which comprises a bottom plate, wherein a first chute is formed in the middle of the upper end of the bottom plate, limiting grooves are formed in the inner side walls of the front and the rear of the first chute, a displacement mechanism is installed on the outer side wall of one side of the bottom plate, a shell is fixedly connected to the outer side wall of the other side of the bottom plate, a storage battery is fixedly connected to the interior of the shell, a supporting plate is installed at the upper end of the bottom plate through a lifting mechanism, and the supporting plate is of an arc structure: the invention relates to a calibration device for ophthalmologic imaging equipment, wherein a lifting mechanism with a supporting plate and a displacement mechanism are arranged on a bottom plate, when the calibration device is used, a driving motor of the displacement mechanism can be used for driving the supporting plate to move left and right on the bottom plate, the supporting plate moves up and down through a hydraulic cylinder of the lifting mechanism, the head of a patient is adjusted, the eyes of the patient are aligned to a shooting structure on the imaging equipment, manual adjustment is not needed, and the calibration device is convenient to operate.

Description

Calibration device for ophthalmologic imaging equipment

Technical Field

The invention relates to a calibration device, in particular to a calibration device for an ophthalmologic imaging apparatus, and belongs to the technical field of calibration devices.

Background

Ophthalmology is one of hospital subjects, and the staff of ophthalmology can use many mechanical equipment when examining patient's eye, and imaging device is one of them, and the patient is with the eye towards the shooting structure on the imaging device when using, gathers patient's eye information.

At present, when the ophthalmologic imaging device collects the information of the eyes of a patient, the patient mostly directly faces the eyes to a shooting structure on the imaging device, in the process, a nearby worker is required to adjust the head position of the patient to ensure that the eyes of the patient face the shooting structure on the imaging device, the operation process is troublesome, and the collection time is too long, the neck of the patient can suffer from aching pain, so that the eyes of the patient are deviated, and the information collection fails, the chin part of the head of the patient is abutted against a workbench by the traditional two-dimensional head bearing and adjusting device, then the two-dimensional movement of the head of the patient is realized by utilizing a horizontal movement and vertical lifting driving mechanism on the workbench, and finally the positioning of the head and the eyes of the patient is completed, but in the use process of the design, whether the current regulation is proper feedback information can be obtained from the patient after the horizontal movement and the vertical lifting driving mechanism are adjusted, frequent adjustment and correction are required, and the head of the patient is clamped in the process, so that the patient feels uncomfortable and the design is not humanized.

Disclosure of Invention

The invention provides a calibration device for an ophthalmologic imaging device, which effectively solves the problems that when the ophthalmologic imaging device collects information of eyes of a patient at present, the patient mostly directly faces the eyes to a shooting structure on the imaging device, in the process, a nearby worker needs to adjust the head position of the patient to ensure that the eyes of the patient face the shooting structure on the imaging device, the operation process is troublesome, and when the collection time is too long, the neck of the patient can suffer from ache, so that the eyes of the patient deviate, and the information collection fails.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to a calibration device for ophthalmological imaging equipment, which comprises a bottom plate, wherein a first chute is formed in the middle of the upper end of the bottom plate, limiting grooves are formed in the inner side walls of the front part and the rear part of the first chute, a displacement mechanism is arranged on the outer side wall of one side of the bottom plate, a shell is fixedly connected to the outer side wall of the other side of the bottom plate, a storage battery is fixedly connected to the interior of the shell, a supporting plate is arranged at the upper end of the bottom plate through a lifting mechanism and is of an arc structure, a sponge pad is fixedly connected to the middle of the upper end of the supporting plate, an arc-shaped cavity is formed in the plate body of the arc-shaped supporting plate, an arc-shaped slide rail is arranged in the cavity, an elastic support frame is supported in the slide rail through a first slide block, an, the equal sliding support in upper end both sides of layer board is connected with the curb plate, and the bottom of every curb plate passes through the second slider slidable and locks to arbitrary position in the arc slide rail, wherein all install aligning gear on the curb plate, logical groove has all been seted up to the inside of curb plate, the positive middle part fixedly connected with mounting panel of bottom plate.

As a preferred technical solution of the present invention, the displacement mechanism includes a motor housing, the motor housing is fixedly connected to the bottom plate, a driving motor is fixedly connected to the inside of the motor housing, the driving motor is electrically connected to the storage battery, an output end of the driving motor is fixedly connected to a screw rod, one end of the screw rod, which is far away from the driving motor, sequentially penetrates through the outer side walls of the motor housing and the bottom plate and extends to the inside of the first chute, one end of the screw rod, which is located inside the first chute, is rotatably connected to a first rotating load disk, one side of the first rotating load disk, which is far away from the screw rod, is fixedly connected to the inner side wall of the first chute, which is far away from the driving motor, and a.

As a preferable technical scheme of the invention, the first sliding block is in threaded connection with the screw rod and is in sliding connection with the inside of the first sliding groove, the front side and the rear side of the first sliding block are both fixedly connected with limiting blocks, and the limiting blocks are both in sliding connection with the inside of the limiting grooves on the same side.

As a preferred technical scheme of the present invention, the lifting mechanism includes a support plate, a lower end of the support plate is fixedly connected to an upper end of a first slide block of the displacement mechanism and slidably connected to an upper end of the bottom plate, a hydraulic cylinder is fixedly connected to a middle portion of the upper end of the support plate, the hydraulic cylinder is electrically connected to the storage battery, an upper end of the hydraulic cylinder is fixedly connected to a fixed block, an upper end of the fixed block is fixedly connected to a middle portion of the lower end of the support plate, and four corners of the upper end of the support plate are fixedly connected to support rods.

According to a preferable technical scheme of the invention, the hydraulic cylinder is wrapped with a dustproof sleeve, the dustproof sleeve is corrugated, the lower end of the dustproof sleeve is fixedly connected with the upper end of the support plate, and the upper end of the dustproof sleeve is fixedly connected with the lower end of the fixed block.

As a preferred technical scheme of the present invention, the support rods each include a main rod, lower ends of the main rods are all fixedly connected to an upper end of the support plate, auxiliary rods are inserted into upper ends of the main rods, upper ends of the auxiliary rods are all fixedly connected to support blocks, upper ends of the support blocks are all fixedly connected to lower ends of the support plates, outer side walls of the auxiliary rods are all wrapped with compression springs, diameters of the compression springs are smaller than diameters of the main rods on the same side and widths of the support blocks, lower ends of the compression springs are all fixedly connected to upper ends of the main rods on the same side, and upper ends of the compression springs are all fixedly connected to lower ends of the support blocks on the same side.

According to a preferred technical scheme, the calibrating mechanisms all comprise threaded supporting rods, the threaded supporting rods all penetrate through and are in threaded connection with the side plates on the same side, the threaded supporting rods are located above the through grooves formed in the side plates, hand wheels are fixedly connected to the ends, far away from the middle portion of the supporting plate, of the threaded supporting rods, second rotating carrying discs are rotatably connected to the ends, close to the middle portion of the supporting plate, of the threaded supporting rods, extruding plates are fixedly connected to one sides, far away from the threaded supporting rods, of the second rotating carrying discs, limiting plates are fixedly connected to the lower ends, far away from the middle portion of the supporting plate, one sides, far away from the middle portion of the supporting plate, of the limiting plates all penetrate through the through grooves formed in the side plates on the same.

As a preferable technical scheme, the lower ends of the limiting plates are connected with the lower ends of the inner parts of the through grooves in a sliding mode, the sides, far away from the middle part of the supporting plate, of the limiting plates are fixedly connected with baffle discs, and the diameters of the baffle discs are larger than the width of the through grooves.

The invention has the following beneficial effects:

1. according to the invention, the supporting plate of the traditional two-dimensional driving mechanism is designed into an arc shape, the elastic supporting frame and the arc-shaped sliding rail are additionally arranged, the coarse adjustment of the position of the patient is completed, the traditional fine adjustment mode is combined, the final positioning speed of the patient is greatly improved, meanwhile, no external clamping equipment is required to act on the head of the patient in the coarse adjustment mode, and the comfort level is greatly improved.

2. The invention relates to a calibration device for ophthalmologic imaging equipment, wherein a lifting mechanism with a supporting plate and a displacement mechanism are arranged on a bottom plate, when the calibration device is used, a driving motor of the displacement mechanism can be used for driving the supporting plate to move left and right on the bottom plate, the supporting plate moves up and down through a hydraulic cylinder of the lifting mechanism, the head of a patient is adjusted, the eyes of the patient are aligned to a shooting structure on the imaging equipment, manual adjustment is not needed, and the calibration device is convenient to operate.

3. When the device is used, the threaded support rods of the two calibration mechanisms can be used for supporting the extrusion plates on the two sides of the head of a patient to fix the head of the patient, so that the phenomenon that the neck of the patient is sore and the position of the eyes of the patient moves to cause information acquisition failure due to overlong information acquisition time is prevented.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a cutaway view of the present invention;

FIG. 2 is a view of the area at A in FIG. 1;

FIG. 3 is a schematic view of the first slider according to the present invention;

FIG. 4 is a schematic structural diagram of a limiting block of the present invention;

fig. 5 is an external structural view of the present invention.

In the figure: 1. a base plate; 2. a first chute; 3. a limiting groove; 4. a displacement mechanism; 41. a motor housing; 42. a drive motor; 43. a screw; 44. a first rotating carrier disc; 45. a first slider; 46. a limiting block; 5. a lifting mechanism; 51. a carrier plate; 52. a hydraulic cylinder; 53. a fixed block; 54. a support bar; 55. a main rod; 56. an auxiliary rod; 57. a support block; 58. a compression spring; 59. a dust-proof sleeve; 6. a support plate; 7. a side plate; 8. a calibration mechanism; 81. a threaded strut; 82. a hand wheel; 83. a second rotating carrier disk; 84. a pressing plate; 85. a limiting plate; 86. scale lines; 87. a second chute; 88. a catch tray; 9. a through groove; 10. a card holder; 11. a sponge cushion; 12. a housing; 13. a storage battery; 14. mounting a plate; 15. and a second slider.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: as shown in fig. 1-5, the calibration device for an ophthalmologic imaging apparatus of the present invention comprises a bottom plate 1, a first sliding groove 2 is formed in the middle of the upper end of the bottom plate 1, the inner side walls of the front and rear portions of the first sliding groove 2 are respectively provided with a limiting groove 3, a displacement mechanism 4 is installed on the outer side wall of one side of the bottom plate 1, a housing 12 is fixedly connected to the outer side wall of the other side of the bottom plate 1, a storage battery 13 is fixedly connected to the interior of the housing 12, a supporting plate 6 is installed at the upper end of the bottom plate 1 through a lifting mechanism 5, the supporting plate 6 is in an arc structure, a sponge pad 11 is fixedly connected to the middle of the upper end of the supporting plate 6, an arc-shaped cavity is arranged in the plate body of the arc-shaped supporting plate 6, an arc-shaped sliding rail is arranged in the, the elastic support frame is pressed and then vertically moves linearly and telescopically in the arc-shaped cavity, the upper end of the supporting plate 6 is connected with the side plate 7 through the equal sliding support on two sides, the bottom of each side plate 7 can slide in the arc-shaped sliding rail through the second sliding block and can be locked to any position, the calibrating mechanism 8 is installed on each side plate 7, the through groove 9 is formed in the inner portion of each side plate 7, and the mounting plate 14 is fixedly connected to the middle of the front face of the bottom plate 1.

The mounting plate 14 is fixedly connected to the middle of the front surface of the bottom plate 1, the head of a patient can be supported on the imaging device through the mounting plate 14 by using the supporting plate 6, and the shooting structure of the imaging device can conveniently acquire the information of the eyes of the patient.

Wherein, the displacement mechanism 4 includes a motor housing 41, the motor housing 41 is fixedly connected to the bottom plate 1, the interior of the motor housing 41 is fixedly connected with a driving motor 42, the driving motor 42 is electrically connected with the battery 13, the output end of the driving motor 42 is fixedly connected with a screw 43, one end of the screw 43, which is far away from the driving motor 42, sequentially passes through the outer side walls of the motor housing 41 and the bottom plate 1 and extends to the interior of the first chute 2, one end of the screw 43, which is located inside the first chute 2, is rotatably connected with a first rotating carrying disc 44, one side of the first rotating carrying disc 44, which is far away from the screw 43, is fixedly connected with the inner side wall of the first chute 2, which is far away from the driving motor 42, a first slider 45 is sleeved on the outer side wall of the screw 43, the screw 43 rotates the screw 43 through the driving motor 42, and drives the supporting, the position of the supporting plate 6 on the bottom plate 1 is adjusted, so that the eyes of the patient can be conveniently aligned with the shooting structure of the imaging device.

Wherein, first slider 45 threaded connection is on screw rod 43 and sliding connection is in the inside of first spout 2, the equal fixedly connected with stopper 46 of the front and back side of first slider 45, the equal sliding connection of stopper 46 is in the inside of homonymy spacing groove 3, makes things convenient for screw rod 43 to drive first slider 45 and slides in the inside of first spout 2, and the condition lower extreme that does not influence first slider 45 and move is fixing first slider 45 in first spout 2 simultaneously, avoids first slider 45 to leave the inside of first spout 2.

Wherein, elevating system 5 includes support plate 51, the lower extreme of support plate 51 and the first slider 45 upper end fixed connection of displacement mechanism 4 and the upper end sliding connection of bottom plate 1, the upper end middle part fixedly connected with pneumatic cylinder 52 of support plate 51, pneumatic cylinder 52 and battery 13 electric connection, the upper end fixedly connected with fixed block 53 of pneumatic cylinder 52, the upper end of fixed block 53 and the lower extreme middle part fixed connection of layer board 6, the equal fixedly connected with bracing piece 54 of the upper end four corners of support plate 51 moves layer board 6 through pneumatic cylinder 52, adjusts the height of layer board 6, conveniently aims at the shooting structure of imaging equipment with patient's eyes.

The outer portion of the hydraulic cylinder 52 is wrapped with a dustproof sleeve 59, the dustproof sleeve 59 is in a corrugated shape, the lower end of the dustproof sleeve 59 is fixedly connected with the upper end of the carrier plate 51, the upper end of the dustproof sleeve 59 is fixedly connected with the lower end of the fixing block 53, the hydraulic cylinder 52 is wrapped by the dustproof sleeve 59, and dust in air is prevented from being stuck on a piston rod of the hydraulic cylinder 52 and affecting normal work of the hydraulic cylinder 52.

Wherein, the bracing piece 54 all includes mobile jib 55, the lower extreme of mobile jib 55 all with the upper end fixed connection of support plate 51, the upper end of mobile jib 55 is all inserted and is equipped with vice pole 56, the equal fixedly connected with supporting shoe 57 in upper end of vice pole 56, the upper end of supporting shoe 57 all with the lower extreme fixed connection of layer board 6, it has compression spring 58 all to wrap up on the lateral wall of vice pole 56, compression spring 58's diameter all is less than the diameter of homonymy mobile jib 55 and the width of supporting shoe 57, compression spring 58's lower extreme all with the upper end fixed connection of homonymy mobile jib 55, compression spring 58's upper end all with the lower extreme fixed connection of homonymy supporting shoe 57, support the lower extreme of living layer board 6 through the elastic action of mobile jib 55 and vice pole 56 and compression spring 58, prevent that layer board 6 from taking place the phenomenon.

Wherein, the calibration mechanisms 8 all comprise threaded support rods 81, the threaded support rods 81 all penetrate through and are in threaded connection with the side plates 7 on the same side, the threaded support rods 81 are all positioned above the through grooves 9 formed in the side plates 7, the end, far away from the middle part of the supporting plate 6, of each threaded support rod 81 is fixedly connected with a hand wheel 82, the end, close to the middle part of the supporting plate 6, of each threaded support rod 81 is rotatably connected with a second rotating carrying disc 83, one side, far away from the threaded support rod 81, of each second rotating carrying disc 83 is fixedly connected with an extrusion plate 84, the lower end, far away from the middle part of the supporting plate 6, of each extrusion plate 84 is fixedly connected with a limiting plate 85, one side, far away from the middle part of the supporting plate 6, of each limiting plate 85 penetrates through the through grooves 9 formed in the side plates 7 on the same side, the lower, and a calibration operation is performed on the patient's head by observing the graduation marks 86.

Wherein, the lower extreme of limiting plate 85 all with the inside lower extreme sliding connection that the groove 9 was led to at the place, the equal fixedly connected with fender dish 88 in one side that the layer board 6 middle part was kept away from to limiting plate 85, the diameter that keeps off dish 88 all is greater than the width that the groove 9 was led to at the place, makes things convenient for limiting plate 85 to slide in the inside that leads to groove 9 to it keeps away from one side at the middle part of layer board 6 to injectd limiting plate 85 through fender dish 88, prevents that limiting plate 85 from breaking away from curb plate.

Specifically, before the present invention is used, the present invention is fixed on the imaging device through the mounting plate 14, and is electrically connected with the circuit of the imaging device, when in use, firstly, the patient puts the chin of the head on the arc-shaped supporting plate at the top of the elastic supporting frame, so that the chin is attached to the inner wall of the arc-shaped supporting plate, then the patient applies a force of moving left and right slightly to make the first sliding block and the head move left or right integrally, during the moving process, the first sliding block slides in the arc-shaped supporting plate 6, and the height direction of the patient can control the head to press up or down by himself, so that the elastic supporting frame and the head move up and down linearly, after the patient is adjusted to a proper position, the eyes of the patient align with the shooting structure of the imaging device, and after the current area and the city area are fed back, the head of the patient is kept static, then the driving motor, the driving motor 42 drives the supporting plate 6 to move left and right on the bottom plate 1 by rotating the screw 43, in the process, the first sliding block keeps static until the first sliding block is positioned at the symmetrical center of the arc-shaped supporting plate 6, the driving motor 42 stops rotating, then the hydraulic cylinder 52 of the lifting mechanism 5 is started, when the hydraulic cylinder 52 works, the special motor of the hydraulic cylinder 52 controls the oil pump to inject hydraulic oil into the oil cylinder, the piston is extruded by the hydraulic oil, then the supporting plate 6 is lifted by the piston rod until the supporting plate 6 rises to compress the elastic supporting frame until the elastic supporting frame can not be compressed continuously, at the moment, the rough adjustment of the position of the patient is finished, the hand wheel 82 of the two calibrating mechanisms 8 rotates the threaded support rod 81, so that the two extruding plates 84 simultaneously move towards the direction close to the middle part of the supporting plate 6 until the two extruding plates 84 are abutted against the, the staff can observe scale mark 86 on two limiting plates 85, guarantee that the length that two stripper plates 84 removed is the same to guarantee that patient's head is put in the middle part of layer board 6, then through imaging device operation displacement mechanism 4's driving motor 42 and elevating system 5's pneumatic cylinder 52, control fine setting motion from top to bottom, the position of adjustment patient's head, aim at imaging device's shooting structure with patient's eyes, then operate imaging device and gather patient's eye's information can. According to the invention, the supporting plate of the traditional two-dimensional driving mechanism is designed into an arc shape, the elastic supporting frame and the arc-shaped sliding rail are additionally arranged, the coarse adjustment of the position of the patient is completed, the traditional fine adjustment mode is combined, the final positioning speed of the patient is greatly improved, meanwhile, no external clamping equipment is required to act on the head of the patient in the coarse adjustment mode, and the comfort level is greatly improved.

Example 2: second spout 87 has been seted up through the front and back upper end at two limiting plates 85, logical groove 9 inside at two curb plates 7 has set up cassette 10, cassette 10 is concave structure, second slider 15 has been set up on the inside wall of the front and back of cassette 10, cassette 10 passes through the upper end of second slider 15 sliding connection at limiting plate 85, fix the motion orbit of limiting plate 85 simultaneously, when screw thread branch 81 moves stripper plate 84, cassette 10 is under the condition that does not influence the motion of limiting plate 85, fix limiting plate 85 in the inside that leads to groove 9 at place, prevent that limiting plate 85 from rocking in the inside that leads to groove 9 at place, and fix homonymy stripper plate 84 through limiting plate 85, prevent in the motion process, stripper plate 84 rotates at will on homonymy screw thread branch 81, the convenience supports stripper plate 84 at patient's head, the operation of calibrating is carried out to patient's head.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The calibration device for the ophthalmologic imaging equipment comprises a bottom plate (1) and is characterized in that a first sliding groove (2) is formed in the middle of the upper end of the bottom plate (1), limiting grooves (3) are formed in the inner side walls of the front portion and the rear portion of the first sliding groove (2), a displacement mechanism (4) is installed on the outer side wall of one side of the bottom plate (1), a shell (12) is fixedly connected onto the outer side wall of the other side of the bottom plate (1), a storage battery (13) is fixedly connected into the shell (12), a supporting plate (6) is installed at the upper end of the bottom plate (1) through a lifting mechanism (5), the supporting plate (6) is of an arc-shaped structure, a sponge cushion (11) is fixedly connected onto the middle of the upper end of the supporting plate (6), an arc-shaped cavity is formed in a plate body of the arc-shaped supporting plate (6), an arc-shaped, this elastic support frame's a top fixedly connected with arc layer board, the elastic support frame pressurized back straight line concertina movement about vertical in the arc cavity, the equal sliding support in upper end both sides of layer board (6) is connected with curb plate (7), and the bottom of every curb plate (7) is passed through the second slider and is slided and lock to arbitrary position in the arc slide rail, wherein all install calibration mechanism (8) on curb plate (7), logical groove (9) have all been seted up to the inside of curb plate (7), the positive middle part fixedly connected with mounting panel (14) of bottom plate (1).

2. The calibrating device for the ophthalmologic imaging apparatus according to claim 1, wherein the displacement mechanism (4) comprises a motor housing (41), the motor housing (41) is fixedly connected to the base plate (1), a driving motor (42) is fixedly connected to the inside of the motor housing (41), the driving motor (42) is electrically connected to the battery (13), a screw (43) is fixedly connected to an output end of the driving motor (42), one end of the screw (43) far away from the driving motor (42) sequentially penetrates through the outer side walls of the motor housing (41) and the base plate (1) and extends to the inside of the first chute (2), one end of the screw (43) located inside the first chute (2) is rotatably connected to a first rotating carrying disc (44), one side of the first rotating carrying disc (44) far away from the screw (43) is fixedly connected to the inner side wall of the first chute (2) far away from the driving motor (42), the outer side wall of the screw rod (43) is sleeved with a first sliding block (45).

3. The calibrating device for the ophthalmological imaging apparatus according to claim 2, characterized in that the first sliding block (45) is screwed on the screw rod (43) and is slidably connected inside the first sliding groove (2), the front side and the rear side of the first sliding block (45) are fixedly connected with limiting blocks (46), and the limiting blocks (46) are slidably connected inside the limiting grooves (3) on the same side.

4. The calibrating device for the ophthalmologic imaging apparatus according to claim 1, wherein the lifting mechanism (5) comprises a carrier plate (51), the lower end of the carrier plate (51) is fixedly connected with the upper end of the first slide block (45) of the displacement mechanism (4) and is slidably connected with the upper end of the base plate (1), a hydraulic cylinder (52) is fixedly connected with the middle of the upper end of the carrier plate (51), the hydraulic cylinder (52) is electrically connected with the accumulator (13), a fixed block (53) is fixedly connected with the upper end of the hydraulic cylinder (52), the upper end of the fixed block (53) is fixedly connected with the middle of the lower end of the carrier plate (6), and support rods (54) are fixedly connected with four corners of the upper end of the carrier plate (51).

5. The calibrating device for the ophthalmologic imaging apparatus according to claim 4, characterized in that the outside of the hydraulic cylinder (52) is covered with a dust-proof sleeve (59), the dust-proof sleeve (59) is corrugated, the lower end of the dust-proof sleeve (59) is fixedly connected with the upper end of the carrier plate (51), and the upper end of the dust-proof sleeve (59) is fixedly connected with the lower end of the fixing block (53).

6. A calibration device for an ophthalmic imaging apparatus according to claim 4, the support rods (54) comprise main rods (55), the lower ends of the main rods (55) are fixedly connected with the upper end of the carrier plate (51), auxiliary rods (56) are inserted into the upper ends of the main rods (55), supporting blocks (57) are fixedly connected to the upper ends of the auxiliary rods (56), the upper ends of the supporting blocks (57) are fixedly connected with the lower end of the supporting plate (6), the outer side walls of the auxiliary rods (56) are wrapped with compression springs (58), the diameters of the compression springs (58) are smaller than the diameter of the main rod (55) on the same side and the width of the supporting block (57), the lower ends of the compression springs (58) are fixedly connected with the upper ends of the main rods (55) on the same side, the upper ends of the compression springs (58) are fixedly connected with the lower ends of the supporting blocks (57) on the same side.

7. The calibrating device for the ophthalmologic imaging apparatus according to claim 1, wherein the calibrating mechanisms (8) each include a threaded rod (81), the threaded rods (81) each penetrate through and are connected to the side plate (7) on the same side, the threaded rods (81) are located above the through grooves (9) formed in the side plate (7), a hand wheel (82) is fixedly connected to one end of each threaded rod (81) far away from the middle of the supporting plate (6), one end of each threaded rod (81) close to the middle of the supporting plate (6) is rotatably connected to a second rotating carrying disc (83), one side of each second rotating carrying disc (83) far away from the corresponding threaded rod (81) is fixedly connected to an extruding plate (84), a limiting plate (85) is fixedly connected to the lower end of one side of each extruding plate (84) far away from the middle of the supporting plate (6), and one side of each limiting plate (85) far away from the middle of the supporting plate (6) penetrates through the side plate (7) formed in the same side The lower end of the front surface of the limiting plate (85) is provided with scale marks (86).

8. A calibration device for an ophthalmologic imaging apparatus according to claim 7, characterized in that the lower ends of the limit plates (85) are slidably connected to the inner lower ends of the through slots (9), the limit plates (85) are fixedly connected to the baffle discs (88) on the side away from the middle of the carrier plate (6), and the diameter of the baffle discs (88) is larger than the width of the through slots (9).