Large-size double-sided aspheric lens for preventing myopia in movement
Through the three-zone design of double-sided aspherical lenses, the aberration of large-size sports protective glasses is optimized and the edge thickness is reduced, which solves the problems of clear imaging and comfortable wearing of large-size lenses during movement, and provides a thinner lens design.
Patent Information
- Application Number
- CN202422513225.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The lenses of existing large-size sports protective glasses are insufficient in aberration correction ability at the edges, resulting in image deformation and the edge thickness is too thick to meet the clear imaging needs of myopic people during exercise.
The double-sided aspherical design is adopted to distinguish the refractive light of the lens into the central refractive stability zone, the refractive transition zone and the edge thickness reduction zone. The aberration is optimized and the edge thickness is reduced through the three-zone design of the diopter, so as to achieve clear imaging and thinning of the lens.
It realizes clear imaging and comfortable wearing of large-size sports protective glasses, with a 3-20% reduction in edge thickness, providing thinner and more comfortable lenses for myopic people.
Smart Images
Figure CN223139964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sports protective myopia lens, in particular to a large-size sports protective myopia aspheric lens on both sides. Background Art
[0002] Today, various sports events are popular among various people, and more and more people participate in outdoor sports. Especially for outdoor events such as cycling and skiing, sports protective glasses are often required during outdoor sports, which can effectively protect the eyes of the wearer. However, for myopic people or those who need to wear glasses to correct their vision, when wearing sports protective glasses, they need to wear their own glasses first and then the sports protective glasses. Although this can achieve the functions of vision correction and protection, it is too cumbersome, and double injuries are likely to occur in case of danger. Therefore, it is necessary to add diopter to sports protective glasses to correct vision and protect the eyes at the same time. Currently, most sports protective glasses adopt large-size, irregular shapes and other appearances. The larger the size, the higher the lens power, the thicker the edge thickness of the lens, and at the same time, the worse the aberration correction ability at the edge. The image will be distorted when observing through the edge area. Sports protective lenses usually adopt spherical surface design, and such design cannot solve the above problems. Conventional aspheric designs are basically based on a lens diameter within 80 mm, and within this range, the aberration can be corrected well. However, when the size is greater than 80 mm, the aberration correction ability becomes weak, and the edge power changes greatly, which cannot meet the clear imaging needs of the wearer.
[0003] To realize the processing of more large-size irregular lenses, the large-size design needs to be considered when designing the lens. When designing large-size lenses, the aberration of the lens with the increase of the field of view, whether the edge diopter meets the clear imaging requirements, and the lens thickness must be considered. When adopting the aspheric design on both sides, the above problems need to be comprehensively considered to meet the requirements of current large-size sports protective glasses. Summary of the Utility Model
[0004] Purpose of the utility model: The purpose of the utility model is to propose a large-size sports protective myopia aspheric lens on both sides, which realizes the optimization of large-size aberration, clear imaging and reduction of edge thickness through the aspheric design on both sides and the three-zone diopter method, providing a lens with a large field of view and clear imaging and a thinner edge thickness for people wearing large-size sports protective glasses.
[0005] Technical solution: The refractive area of the lens of the present utility model is divided into a central refractive stable area, a refractive transition area, and an edge thickness reduction area from the center to the edge; the diopter range of the central refractive stable area is -20D to +20D, and the change in diopter within the entire range is ≤0.5D; the diopter range of the refractive transition area is the diopter of the central refractive stable area - 2D to the diopter of the central refractive stable area + 2D, and the diopter of the refractive transition area is variable; the diopter range of the edge thickness reduction area is the diopter of the refractive transition area - 2D to the diopter of the refractive transition area + 2D, and the diopter of the edge thickness reduction area is variable.
[0006] The central refractive stable area is in the range of 0 to 30 mm in the radial direction OA from the center O point of the lens outward.
[0007] The central refractive stable area provides the diopter required for full correction of vision and has a stable diopter.
[0008] The refractive transition area is in the range of 10 to 60 mm in the radial direction AB from the center O point of the lens outward.
[0009] The diopter of the refractive transition area increases or decreases monotonically along the AB direction.
[0010] The refractive transition area is used to correct large-sized aberrations and provide a clear image.
[0011] The edge thickness reduction area is in the range of 5 to 60 mm in the radial direction BC from the center O point of the lens outward.
[0012] The change in diopter of the edge thickness reduction area increases or decreases monotonically or first increases and then decreases or first decreases and then increases along the BC direction.
[0013] The edge thickness reduction area can further correct off-axis point aberrations of a large field of view and reduce the edge thickness of the lens.
[0014] The edge thickness of the edge thickness reduction area is reduced by 3 to 20%.
[0015] Beneficial effects: The present utility model designs a large-sized sports protection myopia aspheric lens through the method of double-sided aspheric and three-zone diopter division. By changing the diopter, large-sized aberration optimization, clear imaging, and reduction of edge thickness are achieved, providing a lens with a large field of view, clear imaging, and a thinner edge thickness for people wearing large-sized sports protection glasses, making the large-sized sports protection glasses clearer, more comfortable, and thinner. Description of the drawings
[0016] Figure 1 is a schematic diagram of the refractive zone division of the lens of the present utility model;
[0017] Figure 2It is a schematic diagram of the variation law of the diopter in each zone of the present utility model. Specific embodiments
[0018] The present utility model will be further described below with reference to the accompanying drawings.
[0019] As Figure 1 shown, for the large-sized sports protection myopia double-sided aspheric lens of the present utility model, the dioptric zone of the lens is divided into three parts from the center to the edge: the central dioptric stable zone 1, the dioptric transition zone 2, and the edge thickness reduction zone 3; the central dioptric stable zone 1 has a length range of 0-30 mm in the radial direction OA from the center O point of the lens outwards, the diopter range in this zone is -20D to +20D, and the change amount of the diopter in the whole interval ≤ 0.5D; the central dioptric stable zone 1 provides the diopter required for full correction of vision and the diopter is stable. The dioptric transition zone 2 has a length range of 10-60 mm in the radial direction AB from the center O point of the lens outwards, the diopter range in this zone is the diopter of the central dioptric stable zone 1 - 2D to the diopter of the central dioptric stable zone 1 + 2D, and the change of the diopter in this zone increases or decreases monotonically along the AB direction. Since the diopter in this zone is variable, it can correct large-sized aberrations and provide a clear image. The edge thickness reduction zone 3 has a length range of 5-60 mm in the radial direction BC from the center O point of the lens outwards, the diopter range in this zone is the diopter of the dioptric transition zone 2 - 2D to the diopter of the dioptric transition zone 2 + 2D, and the change of the diopter in this zone increases or decreases monotonically or first increases and then decreases or first decreases and then increases along the BC direction. Since the diopter in this zone is variable, it can further correct the off-axis point aberration of the large field of view and reduce the edge thickness of the lens, so that the edge thickness of the edge thickness reduction zone 3 is reduced by 3-20%.
[0020] The diameter OC of the large-sized sports protection myopia double-sided aspheric lens ≥ 80 mm; the large-sized sports protection myopia double-sided aspheric lens provides a diopter range of -20D to +20D; the material of the large-sized sports protection myopia double-sided aspheric lens is not limited to materials such as resin, plastic, and glass.
[0021] Embodiment
[0022] As Figure 1, a large-sized sports protective myopia double-sided aspherical lens proposed by the present utility model, the refractive area of the lens is divided into three parts from the center to the edge: the central refractive stable area 1, the refractive transition area 2, and the edge thickness reduction area 3. The length of OA in the central refractive stable area 1 is 30 mm, the diopter of this area is -4.0 D, and the change in diopter in the whole interval is ≤0.1 D. The length of AB in the refractive transition area 2 is 30 mm, and the diopter of this area increases monotonically along the direction of AB, and the diopter increases by 0.75 D at point B. The length of BC in the radial direction from the center O point of the lens outward in the edge thickness reduction area 3 is 30 mm. The diopter change in this area first increases and then decreases along the direction of BC, first increasing to 0.25 D and then decreasing by 0.5 D. The diopter change rules of the three areas are as Figure 2 shown. The edge thickness of the edge thickness reduction area is reduced by 5%. The diameter OC of the large-sized sports protective myopia double-sided aspherical lens is 90 mm. The diopter provided by the large-sized sports protective myopia double-sided aspherical lens is -4.0 D. The material of the large-sized sports protective myopia double-sided aspherical lens is PC plastic.
[0023] The present utility model designs a large-sized sports protective myopia double-sided aspherical lens by means of double-sided asphericity and three-zone diopter division, providing a clearer, more comfortable and thinner-edge lens for people who need to wear large-sized glasses during sports; the large-sized design is more conducive to processing into various-shaped lenses to meet the preferences of various people.
Claims
1. A large-sized sports protective myopia double-sided aspherical lens, characterized in that, The refractive region of the lens is divided into a central refractive stable region, a refractive transition region, and an edge thickness reduction region from the center to the edge; the diopter range of the central refractive stable region is -20D to +20D, and the change in diopter within the entire range is ≤ 0.5D; the diopter range of the refractive transition region is the diopter of the central refractive stable region - 2D to the diopter of the central refractive stable region + 2D, and the diopter of the refractive transition region is variable; the diopter range of the edge thickness reduction region is the diopter of the refractive transition region - 2D to the diopter of the refractive transition region + 2D, and the diopter of the edge thickness reduction region is variable.
2. The aspherical lens for large-sized sports protection myopia with double-sided non-spherical surfaces according to claim 1, wherein The central refractive stable region has a radial length range of 0 to 30 mm in the OA direction from the center O point of the lens outward.
3. A large-size sports protection myopia double-sided aspherical lens according to claim 2, characterized in that, The central refractive stable region provides the diopter required for full correction of vision and has a stable diopter.
4. A large-sized sports protective myopia double-sided aspherical lens according to claim 2, characterized in that, The refractive transition region has a radial length range of 10 to 60 mm in the AB direction from the center O point of the lens outward.
5. A large-size sports protection myopia double-sided aspherical lens according to claim 4, characterized in that, The diopter of the refractive transition region increases or decreases monotonically along the AB direction.
6. A large-size sports protection myopia double-sided aspherical lens according to claim 1 or 4, characterized in that, The refractive transition region is used to correct large-sized aberrations and provide a clear image.
7. A large-sized sports protection myopia double-sided aspheric lens according to claim 4, characterized in that, The edge thickness reduction region has a radial length range of 5 to 60 mm in the BC direction from the center O point of the lens outward.
8. A large-sized sports protection myopia double-sided aspherical lens according to claim 7, characterized in that, The change in diopter of the edge thickness reduction region increases or decreases monotonically or first increases and then decreases or first decreases and then increases along the BC direction.
9. A large-sized sports protection myopia double-sided aspherical lens according to claim 1 or 8, characterized in that, The edge thickness reduction region can further correct off-axis point aberrations in a large field of view and reduce the edge thickness of the lens.
10. A large-size sports protection myopia double-sided aspherical lens according to claim 9, characterized in that, The edge thickness of the edge thickness reduction region is reduced by 3 to 20%.