Glasses lens for correcting eyesight

A spectacle lens and technology for correcting vision, applied in the field of spectacle lenses for correcting vision
CN101196618AInactive Publication Date: 2008-06-11卢在文
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
卢在文
Publication Date
2008-06-11
Estimated Expiration
Not applicable · inactive patent

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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.
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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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