Composite polarized lens and manufacturing method thereof

Abstract

The invention relates to a lens and a manufacturing method thereof, and in particular relates to a compound polarizing lens and a manufacturing method thereof. The compound polarizing lens comprises a PVA polarizing film, a TAC substrate and a resin lens; the PVA polarizing film is fitted with the TAC substrate to form a compound layer; the compound layer is attached on the inner surface or the outer surface of the resin lens; the PVA polarizing film is arranged between the TAC substrate and the resin lens substrate. The structure of the lens has the advantages of both the traditional TAC polarizer and resin polarizer, but no disadvantages of the two polarizers; in combination with the adjustment of the bending of the lens structure and different numbers of degrees of the resin lens, various single-focus (shortsightedness, astigmatism and the like), dual-focus and multi-focus optical polarizing lenses can be formed conveniently; based on the characteristic of easy setting of the resin lens and the characteristics of convenience in processing and reasonable polarizing structure of the TAC and the PVA, a new structure lens can be formed; the new structure lens has the advantages of the resin lens, the TAC and the PVA, and is capable of meeting the requirements of almost all polarizing lenses.

Description

technical field [0001] The invention relates to a lens and a manufacturing method thereof, in particular to a composite polarized lens and a manufacturing method thereof. Background technique [0002] With the progress of society and the improvement of living standards, the demand for sunshade mirrors and driving mirrors has greatly increased. Due to the advantages of controlling the transmittance of light in different vibration directions, polarized lenses are increasingly used for the advantages of reducing glare and diffuse reflection while shading the sun. At the same time, a large number of myopia, bifocal and multifocal presbyopic glasses wearers also need a kind of polarized lens that can enjoy sunshine and driving fun under the premise of clear vision. [0003] However, due to its single bending molding and thermoplastic material characteristics, the traditional TAC polarizer has disadvantages such as lens rebound deformation, if the lens center thickness is greater...

AI Technical Summary

Problems solved by technology

[0003] However, due to its single bending molding and thermoplastic material characteristics, the traditional TAC polarizer has disadvantages such as lens rebound deformation, if the lens center thickness is greater than 1.5mm, the lens may exceed the standard, and the optical effect is not good. There is a pity for polarized lenses, but the sandwich-type resin polarizer has the disadvantages that the thickness must be greater than 2.0 mm, it is easy to delaminate, and the production of high-degree lenses is difficult.

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