Wide-range diopter adjustable optical system for ciliary muscle training glasses

Abstract

The invention discloses a wide-range diopter adjustable optical system for ciliary muscle training glasses, and relates to the technical field of diopter adjusting.The wide-range diopter adjustable optical system comprises a glasses body, glasses legs are rotationally connected to the two sides of the glasses body, and mounting grooves are formed in glasses frames on the two sides of the glasses body; and a positive focal power lens and a negative focal power lens are arranged in the mounting groove. According to the ciliary muscle training glasses, the optical lens group capable of being dynamically adjusted is introduced and matched with the driving mechanism and a precise control mechanism, continuous and precise adjustment of the refractive power is achieved, the glasses can adapt to individualized refractive states of different users, the limitation that existing equipment is only suitable for people with specific vision is overcome, the applicable group is widened, and the application range of the glasses is widened. The optical system provided by the invention can be used as a standardized functional module, not only can be adapted in a spectacle frame, but also can be used in equipment, so that the consistency, the reliability and the quality controllability of a product in a production stage are remarkably improved, and a foundation is laid for large-scale application.

Description

Technical Field

[0001] This invention relates to the field of diopter adjustment technology, specifically to a wide-range diopter adjustable optical system for ciliary muscle training glasses. Background Technology

[0002] Currently, optical and visual intervention programs for myopia prevention and control in adolescents mainly include the following categories: First, contact lenses, represented by orthokeratology lenses, change the curvature of the cornea by wearing them at night to achieve temporary clear uncorrected vision during the day. However, these pose risks of infection, are cumbersome to care for, and are expensive. Second, drug therapy, represented by low-concentration atropine eye drops, relaxes the ciliary muscle through non-selective Young's cholinergic receptor blocking. However, this may be accompanied by side effects such as photophobia and blurred near vision, and the long-term effects and rebound effects after discontinuation are still under investigation. In general, developing a non-invasive optical device that has no drug side effects and can actively and scientifically train the ciliary muscle has become an important research direction in the field of myopia prevention and control.

[0003] In the field of optical devices for training the ciliary muscle, several existing technologies have emerged that aim to train accommodative function through dynamic visual stimulation. However, these technologies still have significant limitations in terms of the universality and effectiveness of optical design.

[0004] For example, Chinese patent (CN221061191U) discloses a ciliary muscle training glasses scheme that uses a mechanical structure to move the lens to change the distance between it and the eyeball, thereby achieving focal length adjustment. Although this design introduces the concept of dynamic zoom, its training mode is essentially optimized for a single basic refractive state, and the range of adjustment it can cover is limited. For a wide range of users with large differences in refractive power (such as users with both myopia and hyperopia), this device is difficult to provide effective optical stimulation that matches their needs, and therefore lacks the necessary universality. Summary of the Invention

[0005] To solve the above-mentioned technical problems, a wide-range diopter adjustable optical system for ciliary muscle training glasses is provided. This technical solution solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A wide-range diopter adjustable optical system for ciliary muscle training glasses includes a glasses body with temples rotatably connected to both sides of the glasses body. Mounting slots are provided on the frames on both sides of the glasses body, and positive and negative diopter lenses are disposed within the mounting slots. A drive mechanism and a mounting mechanism are disposed inside the frames of the glasses body. The mounting mechanism is used to fix the position of the positive diopter lens, and the drive mechanism is used to adjust the distance between the positive and negative diopter lenses, thereby changing the total diopter of the optical system.

[0008] Preferably, the driving mechanism includes a first micro motor fixedly installed on the inner wall of the top of the eyeglass frame on the eyeglass body. The output end of the first micro motor is fixedly connected to a lead screw. A guide rod is also fixedly installed inside the eyeglass frame on the eyeglass body. A movable frame is slidably connected to the guide rod, and the movable frame is threadedly connected to the lead screw.

[0009] Preferably, a first threaded rod is rotatably connected inside the movable frame. The threads at both ends of the first threaded rod have opposite directions, and a first clamping block is threaded to both ends of the outer wall of the first threaded rod. A first fixing rod is also fixedly connected inside the movable frame. The first clamping block is slidably connected to the first fixing rod, and a second micro motor for driving the first threaded rod to rotate is also provided on the inner wall of the movable frame.

[0010] Preferably, the mounting mechanism includes a second threaded rod, a second fixing rod, and a second clamping block. The second threaded rod is rotatably mounted inside the top of the eyeglass frame of the eyeglass body. The second fixing rod is fixedly connected inside the top of the eyeglass frame of the eyeglass body. The second clamping block is provided in two sets and is threadedly connected to both ends of the second threaded rod, and the threads at both ends of the second threaded rod have opposite directions. The second clamping block is slidably connected to the second fixing rod. A third micro motor for driving the second threaded rod to rotate is also installed inside the top of the eyeglass frame of the eyeglass body.

[0011] Preferably, the formula for calculating the total optical power of the optical system is:

[0012]

[0013] in, For the total optical power of the optical system, The optical power of a positive optical power lens d is the optical power of the negative optical power lens, and d is the distance between the positive optical power lens and the negative optical power lens.

[0014] Preferably, the optical material of the positive focal length lens is ACRYLIC optical plastic, with a refractive index of 1.49 and an Abbe number of 55.3.

[0015] Preferably, the negative power lens is made of ARTON_D4532 optical plastic with a refractive index of 1.51 and an Abbe number of 57.5.

[0016] Preferably, the focal length of the positive power lens is f1, the focal length of the negative power lens is f2, and the total length of the optical system is L, which respectively satisfy 30mm≤f2≤45mm, -45mm≤f3≤-30mm, and 9mm≤L≤15.3mm.

[0017] Preferably, the refractive power of the eyeglasses body is adjustable within a range of ±200 degrees.

[0018] Preferably, the glasses body is also provided with a storage module, which allows the wearer to save control parameters and recall them when needed.

[0019] Compared with the prior art, the present invention provides a wide-range diopter adjustable optical system for ciliary muscle training glasses, which has the following beneficial effects:

[0020] The ciliary muscle training glasses of this invention, by introducing a dynamically adjustable optical lens group and cooperating with a drive mechanism and a precise control mechanism, achieve continuous and precise adjustment of refractive power, thereby adapting to the individual refractive state of different users. This completely overcomes the limitation of existing devices that are only suitable for specific vision groups, significantly broadening the applicable group. This product is conducive to promotion and use and has substantial improvements. The optical system of this invention can be used as a standardized functional module, not only adaptable to various eyeglass frames, but also used in devices. This not only greatly simplifies the overall structural design, but also significantly improves the consistency, reliability and quality controllability of the product in the production stage, laying a solid foundation for large-scale application. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the positive optical power lens and the negative optical power lens in this invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the glasses body in this invention;

[0024] Figure 4 In this invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0025] Figure 5 In this invention Figure 3 A schematic diagram of the enlarged structure at point B;

[0026] Figure 6This is a schematic diagram of the optical system structure of the glasses body in this invention;

[0027] Figure 7 This is the wavefront aberration RMS diagram of the optical system of the glasses body in this invention;

[0028] Figure 8 This is a diagram showing the adjustment curve of the optical system of the glasses body in this invention.

[0029] The numbers on the map are:

[0030] 1. Eyeglass body; 101. Temples; 102. Mounting slot; 103. Positive power lens; 104. Negative power lens;

[0031] 2. Drive mechanism; 201. First micro motor; 202. Lead screw; 203. Guide rod; 204. Movable frame; 205. Second micro motor; 206. First threaded rod; 207. First fixed rod; 208. First clamping block;

[0032] 3. Mounting mechanism; 301. Third micro motor; 302. Second threaded rod; 303. Second fixing rod; 304. Second clamping block;

[0033] 4. The pupil of the human eye. Detailed Implementation

[0034] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0035] Example 1

[0036] Please refer to Figures 1-8 As shown, a wide-range diopter adjustable optical system for ciliary muscle training glasses includes a glasses body 1. Temples 101 are rotatably connected to both sides of the glasses body 1. Mounting slots 102 are provided on the frames on both sides of the glasses body 1. Positive diopter lenses 103 and negative diopter lenses 104 are disposed inside the mounting slots 102. A drive mechanism 2 and a mounting mechanism 3 are disposed inside the frames of the glasses body 1. The mounting mechanism 3 is used to fix the position of the positive diopter lens 103, and the drive mechanism 2 is used to adjust the distance between the positive diopter lens 103 and the negative diopter lens 104, thereby changing the total diopter of the optical system.

[0037] Please refer to Figure 3 and Figure 4As shown, the drive mechanism 2 includes a first micro motor 201 fixedly installed on the inner wall of the top of the frame of the eyeglass body 1. The output end of the first micro motor 201 is fixedly connected to the lead screw 202. A guide rod 203 is also fixedly installed inside the frame of the eyeglass body 1. A movable frame 204 is slidably connected to the guide rod 203. The movable frame 204 is threadedly connected to the lead screw 202.

[0038] Please refer to Figure 3 and Figure 4 As shown, a first threaded rod 206 is rotatably connected inside the movable frame 204. The threads at both ends of the first threaded rod 206 have opposite directions of rotation, and both ends of the outer wall of the first threaded rod 206 are threadedly connected to a first clamping block 208. A first fixing rod 207 is also fixedly connected inside the movable frame 204. The first clamping block 208 is slidably connected to the first fixing rod 207. A second micro motor 205 that drives the first threaded rod 206 to rotate is also provided on the inner wall of the movable frame 204.

[0039] Those skilled in the art will understand that the output of the second micro motor 205 drives the first threaded rod 206 to rotate, causing the two sets of first clamping blocks 208 to move closer or further apart. When the two sets of first clamping blocks 208 move closer together, the negative optical power lens 104 is fixedly installed, and when the two sets of first clamping blocks 208 move further apart, the negative optical power lens 104 is released from fixation. Furthermore, by driving the output of the first micro motor 201 to rotate, the lead screw 202 is driven to rotate, thereby moving the installed negative optical power lens 104 closer to or further away from the positive optical power lens 103, changing the distance between the two, and thus adjusting the total optical power of the optical system.

[0040] Please refer to Figure 3 and Figure 5 As shown, the mounting mechanism 3 includes a second threaded rod 302, a second fixing rod 303, and a second clamping block 304. The second threaded rod 302 is rotatably mounted inside the top of the frame of the eyeglasses body 1. The second fixing rod 303 is fixedly connected inside the top of the frame of the eyeglasses body 1. The second clamping block 304 is provided in two sets and is threadedly connected to both ends of the second threaded rod 302 respectively. The threads at both ends of the second threaded rod 302 are in opposite directions. The second clamping block 304 is slidably connected to the second fixing rod 303. A third micro motor 301 for driving the second threaded rod 302 to rotate is also installed inside the top of the frame of the eyeglasses body 1.

[0041] Those skilled in the art will understand that the output end of the third micro motor 301 drives the second threaded rod 302 to rotate, causing the two sets of second clamping blocks 304 to move closer or further apart. When the two sets of second clamping blocks 304 move closer together, the positive focal length lens 103 is fixedly installed, thereby fixing the position of the positive focal length lens 103. When the positive focal length lens 103 moves further apart, the positive focal length lens 103 is released from installation.

[0042] Example 2

[0043] The basic optical path structure of the ciliary muscle training glasses consists of a positive power lens 103 and a negative power lens 104. According to the theory of multi-element optical systems, the combined focal length of the system changes with the distance between the positive power lens 103 and the negative power lens 104. Based on this principle, by precisely controlling the spacing between the positive power lens 103 and the negative power lens 104, the system can exhibit the required positive or negative power.

[0044] The formula for calculating the total optical power of an optical system is:

[0045]

[0046] in, For the total optical power of the optical system, The optical power of the positive optical power lens 103, d represents the optical power of the negative optical power lens 104, and d represents the distance between the positive optical power lens 103 and the negative optical power lens 104.

[0047] For a normal refractive emmetropic eye, the system can be adjusted to a specific state so that the optical powers of the positive power lens 103 and the negative power lens 104 completely cancel each other out. At this time, the system is equivalent to an optical plate, the combined focal length is infinity, and the overall optical power is 0 (i.e., This does not affect the user's view of the outside world; when the user has refractive errors, such as needing to compensate for -D (myopia) or +D (hyperopia), the system adjusts the distance between the positive power lens 103 and the negative power lens 104 through the drive mechanism 2, so that the system's synthesized focal length accurately corresponds to -D (i.e., ...). ) and +D (i.e. The optical power value of the device is such that a single optical structure can meet the correction training needs of both hyperopia and myopia without replacement, significantly improving the integration and functionality of the device.

[0048] In the specific design process, to ensure excellent imaging quality across a refractive power range of ±200 degrees, a strategy of discrete sampling and collaborative optimization was adopted. First, multiple representative discrete points (e.g., one sampling point every 50 degrees) were selected across the entire target refractive power range. Aberration optimization was performed on the optical structure at the lens spacing corresponding to each sampling point to ensure that the system possesses near-diffraction-limited imaging performance under these critical conditions. Subsequently, a series of optimized "refractive power-lens spacing" data were curve-fitted to generate a smooth, continuous adjustment curve. Finally, the system controller drives the lens movement based on this fitted curve, thereby achieving stepless, continuous, and precise adjustment of the refractive power in practical use.

[0049] Example 3

[0050] To achieve a lightweight design and reduce manufacturing costs, both the positive power lens 103 and the negative power lens 104 are made of optical plastic. This optical system is suitable for human eyes with a maximum pupil diameter D of 8mm and is applicable to ±200 degrees of hyperopia / myopia. Its optical path is as follows... Figure 6 As shown. Among them, the positive power lens 103 is a fixed group, and the negative power lens 104 is a zoom group. The optical path structure is a positive and negative structure. By moving the negative power lens 104 back and forth, the overall focal length sign of the optical path structure is changed, so as to achieve the zoom compensation for farsightedness / nearsightedness. The distance between the human eye and the aspherical lens is 12mm, and the designed field of view is a full field of view of 60 degrees.

[0051] Assuming the focal length of the positive power lens 103 is f1 and the focal length of the negative power lens 104 is f2, and the total length of the optical system is L, then the following conditions must be met: 30mm ≤ f2 ≤ 45mm, -45mm ≤ f3 ≤ -30mm, and 9mm ≤ L ≤ 15.3mm. The optical material of the positive power lens 103 is ACRYLIC optical plastic with a refractive index of 1.49 and an Abbe number of 55.3. The optical material of the negative power lens 104 is ARTON_D4532 optical plastic with a refractive index of 1.51 and an Abbe number of 57.5.

[0052] Table 1 shows the detailed parameters of the proposed optical path structure, including the radius of curvature (Radius) of the positive power lens 103 and the negative power lens 104, as well as the distance (Thickness) between the lenses, where Change indicates that the air gap is movable.

[0053] Table 1. Parameters of the Optical System for Wide-Range Continuously Adjustable Ciliary Muscle Training Glasses

[0054]

[0055] The optical system structure proposed in this invention is an aspherical optical system. The optical lens surface type is an even-order aspherical with a number of 12. Table 2 shows the even-order aspherical coefficients of each optical surface. The table lists the front / back surfaces of the positive power lens 103, and the front / back surfaces of the aspherical lens are labeled as follows. Figure 1 As shown.

[0056] Table 2 Even-order aspherical coefficients of optical lenses

[0057]

[0058] In this invention, the air gap between the positive power lens 103 and the negative power lens 104 is used as refractive power compensation. The refractive power compensation range is ±200 degrees. The interval corresponding to each refractive power compensation is shown in Table 3.

[0059] Table 3. Optical Interval for Refractive Power Compensation

[0060]

[0061] Based on aberration theory, this invention rationally controls the shape of the positive power lens 103 and the negative power lens 104, as well as the air gap between the lenses, and finally realizes the optical path structure of the variable magnification glasses for training the ciliary muscle. It has good imaging performance and a lightweight and compact optical path structure, while also having a large field of view.

[0062] like Figure 7 As shown, the optical system provided by this invention exhibits wavefront aberrations close to the diffraction limit in its central field of view across various discrete refractive power states within a range of ±200 degrees. This indicates that the system possesses excellent imaging quality across the entire adjustment range, providing a clear and stable visual stimulus basis for ciliary muscle training. Regarding continuous zoom capabilities, Figure 8 The curve showing the relationship between the system's refractive power and the lens group spacing is presented. This curve exhibits good approximate linearity, which not only verifies the smoothness and predictability of the system's adjustment process but also facilitates the subsequent use of a cam mechanism to achieve high-precision and high-reliability continuous adjustment. The cam structure designed based on this curve can ensure stable, stepless continuous magnification of the system within a refractive power range of ±200 degrees.

[0063] In summary, this invention not only optimizes the image quality of the optical system itself but also fully considers the feasibility of engineering implementation at the system architecture level. The proposed optical structure combines the advantages of excellent imaging performance with simple mechanical control, providing a valuable optical solution for the field of ciliary body training instruments, and has good reference and significance.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A wide-range diopter adjustable optical system for ciliary muscle training glasses, comprising a glasses body (1), characterized in that, The eyeglass body (1) has temples (101) rotatably connected to both sides. The eyeglass frame on both sides of the eyeglass body (1) is provided with mounting slots (102). A positive power lens (103) and a negative power lens (104) are provided inside the mounting slots (102). A drive mechanism (2) and a mounting mechanism (3) are provided inside the upper frame of the eyeglass body (1). The mounting mechanism (3) is used to fix the position of the positive power lens (103), and the drive mechanism (2) is used to adjust the distance between the positive power lens (103) and the negative power lens (104) to change the total power of the optical system.

2. The wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The driving mechanism (2) includes a first micro motor (201) fixedly installed on the inner wall of the top of the eyeglass frame on the eyeglass body (1). The output end of the first micro motor (201) is fixedly connected to the lead screw (202). A guide rod (203) is also fixedly installed inside the eyeglass frame on the eyeglass body (1). A movable frame (204) is slidably connected to the guide rod (203). The movable frame (204) is threadedly connected to the lead screw (202).

3. The wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 2, characterized in that, The movable frame (204) is rotatably connected to a first threaded rod (206). The threads at both ends of the first threaded rod (206) are in opposite directions. Both ends of the outer wall of the first threaded rod (206) are threadedly connected to a first clamping block (208). The movable frame (204) is also fixedly connected to a first fixing rod (207). The first clamping block (208) is slidably connected to the first fixing rod (207). The inner wall of the movable frame (204) is also provided with a second micro motor (205) that drives the first threaded rod (206) to rotate.

4. The wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The mounting mechanism (3) includes a second threaded rod (302), a second fixing rod (303), and a second clamping block (304). The second threaded rod (302) is rotatably mounted inside the top of the frame of the eyeglass body (1). The second fixing rod (303) is fixedly connected inside the top of the frame of the eyeglass body (1). The second clamping block (304) is provided in two sets and is threadedly connected to both ends of the second threaded rod (302). The threads at both ends of the second threaded rod (302) are in opposite directions. The second clamping block (304) is slidably connected to the second fixing rod (303). A third micro motor (301) for driving the second threaded rod (302) to rotate is also installed inside the top of the frame of the eyeglass body (1).

5. The wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The formula for calculating the total optical power of the optical system is as follows: in, For the total optical power of the optical system, The optical power of the positive optical power lens 103, d is the optical power of the negative optical power lens (104), and d is the distance between the positive optical power lens (103) and the negative optical power lens (104).

6. The wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The optical material of the positive focal length lens (103) is ACRYLIC optical plastic, with a refractive index of 1.49 and an Abbe number of 55.

3.

7. The wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The negative power lens (104) is made of ARTON_D4532 optical plastic with a refractive index of 1.51 and an Abbe number of 57.

5.

8. The wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The focal length of the positive power lens (103) is f1, the focal length of the negative power lens (104) is f2, and the total length of the optical system is L, which respectively satisfy 30mm≤f2≤45mm, -45mm≤f3≤-30mm, and 9mm≤L≤15.3mm.

9. A wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The refractive power of the eyeglasses (1) can be adjusted within a range of ±200 degrees.

10. A wide-range diopter adjustable optical system for ciliary muscle training glasses according to claim 1, characterized in that, The glasses body (1) is also equipped with a storage module, which allows the wearer to save control parameters and call them when needed.

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