Polarizing lens for sunglasses, method and apparatus for produci

Details Polarizing lens for sunglasses, method and apparatus for produci Polarizing lens for sunglasses, method and apparatus for produci

1999-01-19

1999-12-07

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

351163, 351177, 351 44, 264 17, G02C 712, G02C 702

Patent

active

059971398

ABSTRACT:
A polarizing lens for sunglasses comprising a laminate having a polarizing thin layer and supporting layers made from polycarbonate-resin being laminated on both surfaces of the thin layer, and a method and an apparatus for producing said polarizing lens. The laminate used for the inventive polarizing lens is formed as a oblong in which polarizing axis is corresponded to the cross direction thereof, and is so curved as to have a non-spherical curved surface whose curve along the direction of polarizing axis is shaper than curve along the direction orthogonal to the polarizing axis.

REFERENCES:
patent: 5135298 (1992-08-01), Peltman
patent: 5434707 (1995-07-01), Dalzell et al.

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