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Glasses lens for correcting eyesight

A spectacle lens and technology for correcting vision, applied in the field of spectacle lenses for correcting vision

Inactive Publication Date: 2008-06-11
卢在文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In conventional technology, it is impossible to freely select the size of eyeglass lenses based on the user's style and preference

Method used

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  • Glasses lens for correcting eyesight
  • Glasses lens for correcting eyesight
  • Glasses lens for correcting eyesight

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Preferred embodiments of the present invention are described below with reference to the accompanying drawings.

[0028] Such as figure 1 , 2A Shown in and 2B, according to an embodiment of the present invention, a spectacle lens for correcting vision (referring to a spectacle lens for correcting astigmatism) includes a concave portion 11 and a changing portion 12, and the concave portion 11 is made of polycarbonate material, plastic material or glass material is made and has a concave surface 10; at its central portion; a change portion 12 extends outward in a curved planar shape in a radial direction from an edge portion of the concave surface 10; The thickness of the change portion 12 is not uniform in the circumferential direction. The changing portion 12 has a use area (lens size) that changes with the visual acuity (diopter) of a user suffering from astigmatism and has a circular outer peripheral surface. Here, the concave part 11 and the changing part 12 are ...

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PUM

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Abstract

A glasses lens for correcting eyesight is disclosed, which comprises a concave part which has a concave surface at its center portion; and a varying part which is outwardly extended from an edge of the curved surface with a certain curve, with the varying part being formed in a plane shape, with the thickness of the varying part being nonuniform in a circumferential direction, with the use area of the same being varied depending on a user's eyesight, wherein the concave part and varying part are made depending on a user's measured eyesight so that a user's astigmatism can be corrected and are cut in certain shapes and sizes corresponding to the size of a glasses frame and are used as a concave lens.

Description

technical field [0001] The present invention relates to a spectacle lens for correcting astigmatism or nearsightedness, wherein the boundary between the central concave surface and the changing edge plane is formed by a substantially smooth curved surface in the spectacle lens for correcting astigmatism or myopia, and in particular to a A spectacle lens for vision correction, in which a concave lens pre-polished according to the power of a spectacle lens for correcting astigmatism or myopia is cut and assembled to a spectacle frame, and the thickness of the concave lens can be significantly reduced, thereby reducing the weight of the spectacle, and using The user can freely choose the desired size of the spectacle lens according to his style or hobby. Background technique [0002] Generally, visual impairment is divided into astigmatism, nearsightedness and hyperopia. [0003] In astigmatism, the ability to refract light passing through the cornea in all directions is not u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02A61F9/00
CPCG02C7/02
Inventor 卢在文
Owner 卢在文
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