Myopia out-of-focus lens

Abstract

The utility model discloses a myopia out-of-focus lens, and particularly relates to the technical field of out-of-focus before film, the myopia out-of-focus lens comprises a lens frame body, the inner wall of the lens frame body is provided with a lens body, the inner wall of the lens body is provided with an optical center area, one side of the lens frame body is provided with a sliding groove, the outer wall of a threaded rod is in threaded connection with a threaded ring, and the threaded ring is provided with a sliding groove. An adjusting rod is connected to the inner wall of the mounting frame in a penetrating mode, a reset spring is arranged on one side of the positioning rod, and a shaft distance adjusting piece is connected to the outer wall of the positioning rod in a clamped mode. According to the out-of-focus lens for myopia, through the arrangement of the first micro-lens group, the threaded rod and the second micro-lens group, the problem that a user needs to adjust the position of the lens or a lens frame when the existing out-of-focus lens for myopia is used for far and near watching is solved, so that the user can conveniently and quickly change the fixed focus of an observation position; and the focusing efficiency of a worker during far and near observation is improved, so that the effect of delaying the myopia degree of a user by the out-of-focus lens is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-membrane defocusing, in particular to myopia. Background Art

[0002] Pre-membrane defocus can also be called myopic defocus, that is, the focus of vision falls in front of the retina. It is a principle widely used in myopia prevention and control technology. Myopia prevention and control glasses can effectively delay the growth of the eye axis through the "pre-membrane defocus" design, thereby delaying the deepening of myopia. The defocus phenomenon refers to the blurring caused by the focus not being imaged on the retina. Simply put, the focus is not on the retina. The focus falling in front of the retina is called pre-membrane defocus (i.e. myopic defocus), and the focus falling behind the retina is called post-membrane defocus (i.e. hyperopic defocus).

[0003] Existing myopia defocus lenses usually adopt a "front-membrane defocus" design, so that the focus is not on the retina, but in front of the retina, to delay the worsening of the user's myopia. Since the existing myopia defocus lenses require users to adjust the position of the lenses or frames when viewing near or far, it causes the user to be unable to quickly focus on the user's observation position when using the lenses, thereby reducing the effect of the defocus lenses on delaying the user's myopia. Therefore, the existing myopia defocus lenses need to be improved to a certain extent. Utility Model Content

[0004] The purpose of the utility model is to provide a myopia defocus lens to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a myopic defocus lens, comprising a frame body, a lens body is installed on the inner wall of the frame body, and a No. 1 microlens group is arranged on the outer wall of the lens body, an optical center area is arranged on the inner wall of the lens body, a sliding groove is opened on one side of the frame body, and an adjustment ring is connected to the inner wall bearing of the frame body, one end of the adjustment ring is fixedly connected to a bevel gear set, and the outer wall of the bevel gear set is fixedly connected to a threaded rod, the outer wall of the threaded rod is threadedly connected to a threaded ring, and the outer wall of the threaded ring is fixedly connected to a mounting frame;

[0006] An adjusting rod is connected through the inner wall of the mounting frame, and the other end of the adjusting rod is fixedly connected to a positioning rod, a return spring is provided on one side of the positioning rod, and a pull rod is fixedly connected to the other end of the adjusting rod, a wheelbase adjustment piece is snap-connected to the outer wall of the positioning rod, and a No. 2 microlens group is provided on the outer wall of the wheelbase adjustment piece, a movable ring is fixedly connected to one side of the mounting frame, and the inner wall of the movable ring is slidably connected to the fixed rod.

[0007] Preferably, an adjustment ring and a threaded rod are provided on the inner wall of the bevel gear set, and the threaded rod forms an integrated structure with the adjustment ring through the bevel gear set, and the threaded ring forms a threaded lifting structure through the threaded rod.

[0008] Preferably, the adjusting rod forms a tensile structure through a pull rod, and the positioning rod forms an integrated structure through the adjusting rod and the pull rod, and a mounting frame is connected through the outer wall of the positioning rod.

[0009] Preferably, two ends of the return spring are fixedly connected to a positioning rod and a mounting frame, and the return spring forms a compression structure through the positioning rod and the mounting frame.

[0010] Preferably, a mounting hole is formed through the outer wall of the wheelbase adjustment piece, and a positioning rod is slidably connected to the inner wall of the mounting hole. The inner wall of the mounting hole and the outer wall of the positioning rod match each other in shape and size.

[0011] Preferably, the second microlens group forms an integrated lifting structure with the mounting frame through a wheelbase adjustment sheet, and the diameter of the second microlens group is the same as the diameter of the optical center area.

[0012] Preferably, there are two mounting frames, and the two mounting frames are symmetrically arranged with the mid-perpendicular line of the wheelbase adjustment plate as the symmetry axis, and the movable ring forms a lifting structure through the mounting frame and the fixing rod.

[0013] Compared with the prior art, the utility model has the following beneficial effects: it is used for myopia defocus lenses;

[0014] 1. The first microlens group, the threaded rod and the second microlens group are arranged, and the threaded adjustment is used to drive the wheelbase adjustment plate and the second microlens group to perform vertical adjustment. At this time, the first microlens group and the second microlens group are used to change the user's focus on the observation position, which solves the problem that the user needs to adjust the position of the lens or the frame when the existing myopia defocus lens is used for far and near viewing, thereby facilitating the user to quickly change the focus of the observation position, improving the efficiency of the staff in focusing when observing far and near, and thus ensuring the effect of the defocus lens on delaying the myopia degree of the user;

[0015] 2. By setting up the mounting frame, positioning rod and return spring, a return spring limit spring is adopted, and the positioning rod is pushed by the elastic deformation of the return spring, so that the positioning rod slides along the inner wall of the mounting frame. Since the mounting hole through one side of the wheelbase adjustment piece is on the same vertical line as the positioning rod, the positioning rod slides along the mounting hole, and then the limited installation of the wheelbase adjustment piece is completed, thereby facilitating the staff to quickly install the wheelbase adjustment piece and the No. 2 microlens group, improving the staff's installation efficiency of the wheelbase adjustment piece and the No. 2 microlens group, and at the same time facilitating the staff to clean and replace the wheelbase adjustment piece and the No. 2 microlens group, thereby ensuring the subsequent cooperation of the No. 2 microlens group and the No. 1 microlens group for the user's focusing accuracy when viewing far and near. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the internal structure of the lens body of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the threaded ring and the second microlens group of the utility model;

[0019] Figure 4 It is a schematic diagram of the connection structure between the mounting bracket and the wheelbase adjustment plate of the utility model.

[0020] In the figure: 1. Frame body; 2. Lens body; 3. Micro lens group No. 1; 4. Optical center area; 5. Slide groove; 6. Adjustment ring; 7. Bevel gear group; 8. Threaded rod; 9. Threaded ring; 10. Mounting frame; 11. Adjustment rod; 12. Positioning rod; 13. Return spring; 14. Pull rod; 15. Mounting hole; 16. Wheelbase adjustment plate; 17. Micro lens group No. 2; 18. Movable ring; 19. Fixed rod. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-3The utility model provides a technical solution: a myopic defocus lens, comprising a frame body 1, a lens body 2 is installed on the inner wall of the frame body 1, and a No. 1 microlens group 3 is arranged on the outer wall of the lens body 2, an optical center area 4 is arranged on the inner wall of the lens body 2, a slide groove 5 is opened on one side of the frame body 1, and an adjusting ring 6 is connected to the inner wall bearing of the frame body 1, one end of the adjusting ring 6 is fixedly connected to a bevel gear group 7, and a threaded rod 8 is fixedly connected to the outer wall of the bevel gear group 7, a threaded ring 9 is threadedly connected to the outer wall of the threaded rod 8, and a mounting frame 10 is fixedly connected to the outer wall of the threaded ring 9.

[0023] The inner wall of the bevel gear set 7 is provided with an adjusting ring 6 and a threaded rod 8, and the threaded rod 8 forms an integrated structure with the adjusting ring 6 through the bevel gear set 7, and the threaded ring 9 forms a threaded lifting structure through the threaded rod 8;

[0024] The adjusting rod 11 forms a tensile structure through the pull rod 14, and the positioning rod 12 forms an integrated structure through the adjusting rod 11 and the pull rod 14, and the outer wall of the positioning rod 12 is penetrated and connected with the mounting frame 10;

[0025] The two ends of the return spring 13 are fixedly connected to the positioning rod 12 and the mounting frame 10 , and the return spring 13 forms a compression structure through the positioning rod 12 and the mounting frame 10 .

[0026] The specific implementation method is as follows: by setting the mounting frame 10, the positioning rod 12 and the return spring 13, the return spring 13 is used as a limit spring, and the positioning rod 12 is pushed by the elastic deformation of the return spring 13, so that the positioning rod 12 slides along the inner wall of the mounting frame 10. Since the mounting hole 15 through which the wheelbase adjustment piece 16 is opened on one side is on the same vertical line as the positioning rod 12, the positioning rod 12 slides along the mounting hole 15, and then the limited installation of the wheelbase adjustment piece 16 is completed, thereby facilitating the staff to quickly install the wheelbase adjustment piece 16 and the second microlens group 17, improving the staff's efficiency in installing the wheelbase adjustment piece 16 and the second microlens group 17, and at the same time facilitating the staff to clean and replace the wheelbase adjustment piece 16 and the second microlens group 17, thereby ensuring the subsequent cooperation between the second microlens group 17 and the first microlens group 3 for the user's focusing accuracy when viewing far and near.

[0027] See also Figure 1-4The utility model provides a technical solution: a myopic defocus lens, an inner wall of a mounting frame 10 is connected with an adjusting rod 11, and the other end of the adjusting rod 11 is fixedly connected with a positioning rod 12, one side of the positioning rod 12 is provided with a return spring 13, the other end of the adjusting rod 11 is fixedly connected with a pull rod 14, the outer wall of the positioning rod 12 is snap-connected with a wheelbase adjustment sheet 16, and the outer wall of the wheelbase adjustment sheet 16 is provided with a No. 2 microlens group 17, one side of the mounting frame 10 is fixedly connected with a movable ring 18, and the inner wall of the movable ring 18 is slidably connected with a fixed rod 19.

[0028] The outer wall of the wheelbase adjustment piece 16 is penetrated with a mounting hole 15, and the inner wall of the mounting hole 15 is slidably connected with the positioning rod 12, and the inner wall of the mounting hole 15 and the outer wall of the positioning rod 12 match each other in shape and size;

[0029] The second microlens group 17 forms an integrated lifting structure with the mounting frame 10 through the wheelbase adjustment piece 16, and the diameter of the second microlens group 17 is the same as the diameter of the optical center area 4;

[0030] There are two mounting frames 10 , and the two mounting frames 10 are symmetrically arranged with the mid-perpendicular line of the wheelbase adjustment piece 16 as the symmetry axis. The movable ring 18 forms a lifting structure through the mounting frames 10 and the fixing rod 19 .

[0031] The specific implementation method is as follows: by setting a No. 1 microlens group 3, a threaded rod 8 and a No. 2 microlens group 17, threaded adjustment is used to drive the wheelbase adjustment plate 16 and the No. 2 microlens group 17 to perform vertical adjustment. At this time, the No. 1 microlens group 3 and the No. 2 microlens group 17 are used to change the user's focus on the observation position, which solves the problem that the existing myopia defocus lenses require the user to adjust the position of the lenses or frames when viewing at far and near, thereby facilitating the user to quickly change the focus of the observation position, improving the focus efficiency of the staff when observing at far and near, and then ensuring the effect of the defocus lenses on delaying the myopia degree of the user.

[0032] Working principle: When using the myopic defocus lens, the lens body 2 is first installed on the inner wall of the frame body 1, so that the user can observe far and near through the lens body 2. When the user needs to ensure that the focus falls in front of the retina when observing far and near, first pull the pull rod 14, and then the pull rod 14 drives the adjustment rod 11 and the positioning rod 12 to slide along the mounting frame 10, so that the positioning rod 12 cooperates with the mounting frame 10 to compress and adjust the return spring 13;

[0033] At this time, the two ends of the wheelbase adjustment piece 16 are respectively installed on the inner wall of the mounting frame 10, so that by loosening the pull rod 14, the positioning rod 12 is pushed by the elastic deformation of the return spring 13, and the positioning rod 12 drives the adjustment rod 11 and the pull rod 14 to move up and down, so that the positioning rod 12 slides along the inner wall of the mounting frame 10, because the mounting hole 15 penetrating through one side of the wheelbase adjustment piece 16 is on the same vertical line as the positioning rod 12;

[0034] Thus, the positioning rod 12 slides along the mounting hole 15, thereby completing the limited installation of the wheelbase adjustment piece 16. Since the second microlens group 17 arranged on the inner wall of the wheelbase adjustment piece 16 has the same lateral size as the optical center area 4, the focus adjustment of the user's observation position is completed through the cooperation of the second microlens group 17 and the first microlens group 3;

[0035] At this time, the adjusting ring 6 is rotated so that the adjusting ring 6 drives the threaded rod 8 to rotate through the bevel gear set 7, thereby driving the threaded ring 9 connected to the outer wall thread to be raised and lowered through the threaded rod 8, and then the mounting frame 10 is driven by the threaded ring 9 to be synchronously adjusted. At this time, the mounting frame 10 drives the wheelbase adjustment piece 16 and the second microlens group 17 to be adjusted, so that the wheelbase adjustment piece 16 drives the other mounting frame 10 to slide along the fixed rod 19 through the movable ring 18;

[0036] This drives the second microlens group 17 to adjust its position, and then the second microlens group 17 cooperates with the first microlens group 3 to complete the focus adjustment when the user uses the lens body 2 to view near or far, ensuring the effect of the defocus lens in delaying the user's myopia.

[0037] 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 myopic defocused lens, comprising a frame body (1), characterized in that: The inner wall of the frame body (1) is provided with a lens body (2), and the outer wall of the lens body (2) is provided with a first micro lens group (3), the inner wall of the lens body (2) is provided with an optical center area (4), a slide groove (5) is provided on one side of the frame body (1), and the inner wall bearing of the frame body (1) is connected with an adjustment ring (6), one end of the adjustment ring (6) is fixedly connected with a bevel gear group (7), and the outer wall of the bevel gear group (7) is fixedly connected with a threaded rod (8), the outer wall of the threaded rod (8) is threadedly connected with a threaded ring (9), and the outer wall of the threaded ring (9) is fixedly connected with a mounting frame (10); An adjusting rod (11) is connected through the inner wall of the mounting frame (10), and the other end of the adjusting rod (11) is fixedly connected to a positioning rod (12), one side of the positioning rod (12) is provided with a return spring (13), the other end of the adjusting rod (11) is fixedly connected to a pull rod (14), the outer wall of the positioning rod (12) is snap-connected with a wheelbase adjusting piece (16), and the outer wall of the wheelbase adjusting piece (16) is provided with a second microlens group (17), one side of the mounting frame (10) is fixedly connected to a movable ring (18), and the inner wall of the movable ring (18) is slidably connected to a fixed rod (19).

2. A myopic defocus lens according to claim 1, characterized in that: The inner wall of the bevel gear set (7) is provided with an adjustment ring (6) and a threaded rod (8), and the threaded rod (8) forms an integrated structure through the bevel gear set (7) and the adjustment ring (6), and the threaded ring (9) forms a threaded lifting structure through the threaded rod (8).

3. The myopic defocus lens according to claim 1, characterized in that: The adjusting rod (11) forms a tensile structure through the pull rod (14), and the positioning rod (12) forms an integrated structure through the adjusting rod (11) and the pull rod (14), and the outer wall of the positioning rod (12) is penetrated and connected with a mounting frame (10).

4. The myopic defocus lens according to claim 1, characterized in that: The two ends of the return spring (13) are fixedly connected to a positioning rod (12) and a mounting frame (10), and the return spring (13) forms a compression structure through the positioning rod (12) and the mounting frame (10).

5. The myopic defocus lens according to claim 1, characterized in that: The outer wall of the wheelbase adjustment piece (16) is penetrated by a mounting hole (15), and the inner wall of the mounting hole (15) is slidably connected to a positioning rod (12), and the inner wall of the mounting hole (15) and the outer wall of the positioning rod (12) match each other in shape and size.

6. The myopic defocus lens according to claim 1, characterized in that: The second microlens group (17) forms an integrated lifting structure with the mounting frame (10) through the wheelbase adjustment sheet (16), and the diameter of the second microlens group (17) is the same as the diameter of the optical center area (4).

7. The myopic defocus lens according to claim 1, characterized in that: There are two mounting frames (10), and the two mounting frames (10) are symmetrically arranged with the mid-perpendicular line of the wheelbase adjustment piece (16) as the symmetry axis. The movable ring (18) forms a lifting structure through the mounting frame (10) and the fixing rod (19).

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