Device for detecting astigmatism degree

Abstract

The utility model provides a device for testing astigmatism degree, which relates to the technical field of vision testing instruments and comprises a storage tank, first positioning grooves are uniformly distributed on the inner wall of the storage tank, the top of one side of the storage tank is rotatably connected with a tank cover through a damping rotating shaft, and a rotating groove is arranged on the other side of the storage tank. Through the arrangement of the storage tank, the tank cover, the rotating pile and the cylindrical lenses, in the use process, the tank cover is opened, the cylindrical lenses are rotated out of the storage tank through the rotating pile, eight cylindrical lenses with different marks are provided, the different cylindrical lenses are sequentially used, the astigmatism degree is measured, meanwhile, the difference between the cylindrical lenses becomes 0.05, and the astigmatism degree is measured. Through the arrangement of the cylindrical lenses and the supporting rods, the supporting rods are taken out from the trapezoidal blocks during use, and then different cylindrical lenses are quickly grabbed through the cooperation of the embedded blocks and the auxiliary lugs, so that the cylindrical lenses are prevented from being blurred when the cylindrical lenses are mounted on a test lens frame.

Description

Technical Field

[0001] The utility model relates to the technical field of vision detection instruments, in particular to a device for detecting the degree of astigmatism. Background Art

[0002] Astigmatism is a vision problem usually caused by an irregular shape of the cornea or lens of the eye. A normal eye is spherical in shape, allowing light to be evenly focused on the retina through the cornea and lens, producing clear vision. However, in the case of astigmatism, the shape of the cornea or lens is irregular, causing the light to not be evenly focused on the retina, but to focus into multiple points, which can cause blurred vision, distortion or discomfort in the eyes.

[0003] At present, most of the methods for testing astigmatism are to add or subtract cylinders on a trial frame. However, most of them directly take the cylinders by hand, which may cause blurring of the cylinders and thus lead to deviations in the test.

[0004] Therefore, we provide a device for testing the degree of astigmatism to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a device for testing the degree of astigmatism, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for testing the degree of astigmatism, comprising a storage tank, the inner wall of which is evenly distributed with positioning grooves 1, the top of one side of the storage tank is rotatably connected to a tank cover via a damping shaft, the other side of the storage tank is provided with a rotating groove, the gap of the rotating groove is bonded and connected with a strip magnetic sheet 2, the inner wall of the rotating groove is rotatably connected with a rotating pile via a damping shaft, the inner wall of the rotating pile is bonded and connected with a strip magnetic sheet 3, cylindrical lenses are installed inside the rotating piles, one side of the cylindrical lens is provided with an auxiliary ear, and the other side of the cylindrical lens is bonded and connected with a strip magnetic sheet 4, a trapezoidal block is installed at the bottom of the storage tank, a placement groove is opened inside the trapezoidal block, and a support rod is provided inside the placement groove.

[0007] Preferably, a strip-shaped magnetic sheet 1 is adhesively connected to the side surface of the can cover, and positioning grooves 2 are evenly distributed on the inner wall of the can cover.

[0008] Preferably, a sliding groove is provided on the surface of the support rod, a sliding key is provided inside the sliding groove, the sliding key is fixedly connected to the side of the splint, the inner wall of the splint is provided with an engaging block, the outer side of the splint is provided with a round rod, and the round rod is located on the inner wall of the opening of the support rod, and the tail of the support rod is adhesively connected with a magnetic disc 2.

[0009] Preferably, the sliding key fits tightly with the sliding groove, and the axis of the clamping plate and the axis of the support rod are kept in the same straight line.

[0010] Preferably, the size of the engaging block matches the size of the groove of the auxiliary ear, and both ends of the clamping plate mounting engaging block are designed with outward curvatures, and the material of the clamping plate is plastic.

[0011] Preferably, a magnetic disc one is adhesively connected to the inner wall of the placement groove, and the size of the magnetic disc one matches the size of the magnetic disc two.

[0012] Preferably, the inner wall gap of the rotating pile matches the thickness of the cylindrical mirror, and the size of the strip magnetic sheet three matches the size of the strip magnetic sheet four.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Through the setting of storage tank, tank cover, rotating pile and cylindrical mirror, when in use, open the tank cover, rotate the cylindrical mirror out of the storage tank through the rotating pile, provide eight cylindrical mirrors with different markings, and measure the degree of astigmatism by using different cylindrical mirrors in sequence. At the same time, the difference between the cylindrical mirrors becomes 0.05 to ensure the accuracy of measurement.

[0015] 2. Through the arrangement of the cylindrical mirror and the support rod, when in use, the support rod is taken out from the trapezoidal block, and then, through the cooperation of the engaging block and the auxiliary ear, different cylindrical mirrors can be quickly grasped, and then, when installing to the trial frame, blurring of the cylindrical mirror can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the trapezoidal block structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cylindrical mirror of the utility model being placed outside the storage tank;

[0019] Figure 4 It is a schematic diagram of the support rod grabbing the cylindrical mirror of the utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the support rod of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the utility model at position A when viewed from above;

[0022] Figure 7 It is a schematic diagram of the rotating pile and cylindrical mirror structure of the utility model.

[0023] Numbers in the figure: 1. Storage tank; 11. Positioning slot 1; 12. Tank cover; 121. Strip magnetic sheet 1; 122. Positioning slot 2; 13. Rotating slot; 14. Strip magnetic sheet 2; 2. Rotating pile; 21. Strip magnetic sheet 3; 3. Cylindrical mirror; 31. Auxiliary ear; 32. Strip magnetic sheet 4; 4. Trapezoidal block; 41. Placement slot; 42. Magnetic disc 1; 5. Support rod; 51. Sliding slot; 52. Sliding key; 53. Clamp; 54. Engaging block; 55. Round rod; 56. Magnetic disc 2. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] See also Figure 1-7 As shown, the utility model provides a technical solution: a device for testing the degree of astigmatism, comprising a storage tank 1, the inner wall of the storage tank 1 is evenly distributed with positioning grooves 11, the top of one side of the storage tank 1 is rotatably connected with a tank cover 12 through a damping shaft, a rotating groove 13 is arranged on the other side of the storage tank 1, a strip magnetic sheet 2 14 is bonded and connected to the gap of the rotating groove 13, a rotating pile 2 is rotatably connected to the inner wall of the rotating pile 2 through a damping shaft, a strip magnetic sheet 3 21 is bonded and connected to the inner wall of the rotating pile 2, a cylindrical lens 3 is installed inside the rotating pile 2, an auxiliary ear 31 is arranged on one side of the cylindrical lens 3, and a strip magnetic sheet 4 32 is bonded and connected to the other side of the cylindrical lens 3, a trapezoidal block 4 is installed at the bottom of the storage tank 1, a placement groove 41 is opened inside the trapezoidal block 4, and a support rod 5 is arranged inside the placement groove 41;

[0027] It should be noted that the cylindrical lenses 3 are marked as -0.05DC, -0.10DC, -0.15DC, -0.20DC, +0.05DC, +0.10DC, +0.15DC and +0.20DC.

[0028] Specifically, a strip magnetic sheet 121 is adhesively connected to the side of the tank cover 12, and positioning grooves 122 are evenly distributed on the inner wall of the tank cover 12. The strip magnetic sheet 121 cooperates with the strip magnetic sheet 14 to quickly close the storage tank 1. At the same time, the positioning groove 122 and the positioning groove 11 both play the same role. After closing the storage tank 1, the two together fix the cylindrical lens 3 to prevent the cylindrical lens 3 from breaking.

[0029] Furthermore, a sliding groove 51 is provided on the surface of the support rod 5, and a sliding key 52 is provided inside the sliding groove 51. The sliding key 52 is fixedly connected to the side of the splint 53, and the inner wall of the splint 53 is provided with an engaging block 54. The outer side of the splint 53 is provided with a round rod 55, and the round rod 55 is located on the inner wall of the opening of the support rod 5. The tail of the support rod 5 is bonded with a magnetic disc 56. The splint 53 is pulled by the sliding key 52, and then the spacing of the splint 53 is reduced by the round rod 55, so that the engaging block 54 cooperates with the auxiliary ear 31 to quickly grab the cylindrical lens 3.

[0030] Specifically, the sliding key 52 fits tightly with the sliding groove 51, and the axis of the clamping plate 53 is kept in the same straight line as the axis of the support rod 5. The friction force generated by the tight fit between the sliding key 52 and the sliding groove 51 prevents the clamping plate 53 from moving inside the support rod 5 without the action of external force.

[0031] Specifically, the size of the interlocking block 54 matches the size of the groove of the auxiliary ear 31, and the two ends of the splint 53 for installing the interlocking block 54 are designed with outward curvature. The material of the splint 53 is plastic. When the splint 53 moves toward the inside of the support rod 5, the bending degree of the splint 53 is limited by the round rod 55 to reduce the spacing of the interlocking blocks 54. Finally, the two interlocking blocks 54 fit together inside the groove of the auxiliary ear 31.

[0032] Embodiment 2

[0033] See also Figure 2 and 7 As shown, in comparison with Example 1, as another implementation of the utility model, the inner wall of the placement groove 41 is adhesively connected with a magnetic disc 1 42, and the size of the magnetic disc 1 42 matches the size of the magnetic disc 2 56. When the support rod 5 is placed in the placement groove 41, the support rod 5 is prevented from sliding out at will through the cooperation between the magnetic disc 1 42 and the magnetic disc 2 56.

[0034] Furthermore, the inner wall gap of the rotating pile 2 matches the thickness of the column mirror 3, and the size of the strip magnetic sheet three 21 matches the size of the strip magnetic sheet four 32. Through the strip magnetic sheet three 21 and the strip magnetic sheet four 32, the column mirror 3 can be quickly removed and put back on the rotating pile 2.

[0035] Working principle: first, a device for testing the degree of astigmatism is moved to the working position; in the first step, the storage tank 1 is opened by the paddle on the outer surface of the tank cover 12; in the second step, the cylindrical lens 3 is rotated to the outside of the storage tank 1 by the rotating pile 2; then, the tank cover 12 is closed by cooperating with the strip magnetic sheet 1 121 and the strip magnetic sheet 2 14; in the third step, the support rod 5 is pulled out from the inside of the placement groove 41; in the fourth step, the splint 53 is pressed against the side of the auxiliary ear 31; in the fifth step, the splint 53 is pulled inward by the sliding key 52; then, the gap of the splint 53 is reduced by the round rod 55 until the two engaging blocks 54 are in the recess of the auxiliary ear 31. The inside of the groove fits, the sixth step, pulls out the cylindrical lens 3 from the inside of the rotating pile 2, and then, the cylindrical lens 3 is inserted into the inside of the trial frame, the seventh step, after the cylindrical lens 3 is used, the side of the cylindrical lens 3 with the strip magnetic sheet four 32 is placed into the inside of the rotating pile 2, and the strip magnetic sheet three 21 cooperates with the strip magnetic sheet four 32 to fix the cylindrical lens 3, and at the same time, the clamping plate 53 is pushed outward by the sliding key 52, and then, the clamping plate 53 expands the gap through its own elasticity, so that the engaging block 54 is separated from the auxiliary ear 31, the eighth step, removes the cylindrical lens 3 in turn and inserts them into the inside of the trial frame for measurement, thus completing the use process of a device for testing the degree of astigmatism.

Claims

1. A device for testing astigmatism, comprising a storage tank (1), characterized in that: The inner wall of the storage tank (1) is evenly distributed with positioning grooves 1 (11); the top of one side of the storage tank (1) is rotatably connected to a tank cover (12) via a damping shaft; the other side of the storage tank (1) is provided with a rotating groove (13); the gap of the rotating groove (13) is bonded and connected to a strip-shaped magnetic attraction sheet 2 (14); the inner wall of the rotating groove (13) is rotatably connected to a rotating pile (2) via a damping shaft; the inner wall of the rotating pile (2) is bonded and connected to a strip-shaped magnetic attraction sheet 3 (21); a cylindrical mirror (3) is installed inside the rotating pile (2); an auxiliary ear (31) is provided on one side of the cylindrical mirror (3); and a strip-shaped magnetic attraction sheet 4 (32) is bonded and connected to the other side of the cylindrical mirror (3); a trapezoidal block (4) is installed at the bottom of the storage tank (1); a placement groove (41) is provided inside the trapezoidal block (4); a support rod (5) is provided inside the placement groove (41).

2. A device for testing astigmatism according to claim 1, characterized in that: A strip-shaped magnetic sheet (121) is adhesively connected to the side surface of the can cover (12), and positioning grooves (122) are evenly distributed on the inner wall of the can cover (12).

3. The device for testing the degree of astigmatism according to claim 1, characterized in that: The surface of the support rod (5) is provided with a sliding groove (51), the interior of the sliding groove (51) is provided with a sliding key (52), the sliding key (52) is fixedly connected to the side of the clamping plate (53), the inner wall of the clamping plate (53) is provided with an engaging block (54), the outer side of the clamping plate (53) is provided with a round rod (55), and the round rod (55) is located on the inner wall of the opening of the support rod (5), and the tail of the support rod (5) is adhesively connected with a magnetic disc 2 (56).

4. The device for testing the degree of astigmatism according to claim 3, characterized in that: The sliding key (52) is tightly fitted with the sliding groove (51), and the axis of the clamping plate (53) and the axis of the support rod (5) are kept on the same straight line.

5. The device for testing the degree of astigmatism according to claim 3, characterized in that: The size of the engaging block (54) matches the size of the groove of the auxiliary ear (31), and the two ends of the clamping plate (53) for mounting the engaging block (54) are designed with outward curvatures, and the material of the clamping plate (53) is plastic.

6. The device for testing astigmatism according to claim 1, characterized in that: The inner wall of the placement groove (41) is bonded with a magnetic disc one (42), and the size of the magnetic disc one (42) matches the size of the magnetic disc two (56).

7. The device for testing the degree of astigmatism according to claim 1, characterized in that: The inner wall gap of the rotating pile (2) matches the thickness of the cylindrical mirror (3), and the size of the strip-shaped magnetic attraction sheet three (21) matches the size of the strip-shaped magnetic attraction sheet four (32).

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