Preparation method of double-sided composite thinned and zooming myopic lens

A myopia lens, double-sided technology, applied in glasses/protective glasses, glasses/goggles, optics, etc., can solve problems such as violation of comfort

Pending Publication Date: 2021-03-16
魏炳松 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the main aberration of the lens is astigmatism. The traditional spherical (Spherical) can effectively optimize the astigmatism only when a certain base curvature condition is met, but the thickness and weight of the lens, especially for users with a high degree of approximation, will Violation of comfort requirements

Method used

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  • Preparation method of double-sided composite thinned and zooming myopic lens
  • Preparation method of double-sided composite thinned and zooming myopic lens
  • Preparation method of double-sided composite thinned and zooming myopic lens

Examples

Experimental program
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Effect test

Embodiment 1

[0033] This embodiment provides a kind of double-sided composite thinning and zooming myopia lens, and its preparation method comprises the following steps:

[0034] S1: Establish the mathematical model of the front surface and the rear surface in the optical software,

[0035]

[0036] Among them, k 1 is the paraxial curvature of the front surface, k 2 is the paraxial curvature of the rear surface, p 1 is the aspheric coefficient of the front surface, p 2 is the rear surface aspheric coefficient, A is the high-order term coefficient, and x is the radial radius;

[0037] S2: Establish evaluation function

[0038] Design m=5, f 1 Optimized for astigmatism within a lens center radius of 10 mm, with a target value of 0; f 2 Optimized for astigmatism within a lens center radius of 20 mm, with a target value of 0, f 3 Optimized for astigmatism within a lens center radius of 25 mm and a target value of 0; f 4 is the power of the inner spherical lens with a radius of 5...

Embodiment 2

[0050] This embodiment provides a kind of double-sided composite thinning and zooming myopia lens, and its preparation method comprises the following steps:

[0051] S1: Establish the mathematical model of the front surface and the rear surface in the optical software,

[0052]

[0053] Among them, k 1 is the paraxial curvature of the front surface, k 2 is the paraxial curvature of the rear surface, p 1 is the aspheric coefficient of the front surface, p 2 is the rear surface aspheric coefficient, A is the high-order term coefficient, and x is the radial radius;

[0054] S2: Establish evaluation function

[0055] Design m=5, f 1 Optimized for astigmatism within a lens center radius of 10 mm, with a target value of 0; f 2 Optimized for astigmatism within a lens center radius of 20 mm, with a target value of 0; f 3 Optimized for astigmatism within a lens center radius of 25 mm and a target value of 0; f 4 is the power of the inner spherical lens with a radius of 5...

Embodiment 3

[0067] This embodiment provides a kind of double-sided composite thinning and zooming myopia lens, and its preparation method comprises the following steps:

[0068] S1: Establish the mathematical model of the front surface and the rear surface in the optical software,

[0069]

[0070]

[0071] Among them, k 1 is the paraxial curvature of the front surface, k 2 is the paraxial curvature of the rear surface, p 1 is the aspheric coefficient of the front surface, p 2 is the rear surface aspheric coefficient, A is the high-order term coefficient, and x is the radial radius;

[0072] S2: Establish evaluation function

[0073] Design m=5, f 1 Optimized for astigmatism within a lens center radius of 10 mm, with a target value of 0; f 2 Optimized for astigmatism within a lens center radius of 20 mm, with a target value of 0; f 3 Optimized for astigmatism within a lens center radius of 25 mm and a target value of 0; f 4 is the power of the inner spherical lens with a r...

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Abstract

The invention relates to a preparation method of a double-sided composite thinned and zooming myopic lens, and belongs to the technical field of optical lens design. According to the invention, the method comprises the following steps: S1, establishing a front surface mathematical model and a rear surface mathematical model in optical software; S2, establishing an evaluation function including theastigmatism optimization value and the lens edge thickness; and S3, inputting structural parameters of the lens blank, and successively optimizing by applying a least square method to obtain data ofthe front surface and the rear surface of the lens. The edge thickness of the lens prepared by the preparation method of the double-sided composite thinned and zooming myopic lens is reduced by 20%-30% compared with that of a spherical surface; the zoom range from the optical center to the edge degree not only reaches + / -4.00 D, but zooming can be performed according to an optometry prescription when the diameter of the lens is 10-40mm, and astigmatism is basically eliminated when the diameter of the lens is 50mm.

Description

technical field [0001] The invention relates to the technical field of optical lens design, more specifically, the invention relates to a preparation method of a double-sided composite thinning and zooming myopia lens. Background technique [0002] With the improvement of people's living standards, people have also put forward higher requirements for the comfort of myopia lenses. In the prior art, the myopic single-vision lens always calculates the diopter of the lens with an object point at infinity (the object distance is greater than or equal to 5 meters) to meet the optometry prescription. However, in the actual use of the lens, the objects observed by the human eye through the lens are not only in the distance. With the development of the times, people may see more close objects. If the lens can change the diopter according to different object points (Zoom) Reduce the degree of adjustment of the eyes to a certain extent, so the eyes will be more comfortable. In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02G02C7/08
CPCG02C7/081G02C7/024G02C7/028G02C2202/24
Inventor 魏炳松邓浩
Owner 魏炳松
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