Method for producing an optical sheet

Details Method for producing an optical sheet Method for producing an optical sheet

2011-03-08

2011-03-08

Vargot, Mathieu D. (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

C264S001360, C264S001600, C264S002700

Reexamination Certificate

active

07901600

ABSTRACT:
A lens film with small warpage even when a transparent base is thin is provided. Pole prisms made of a hardening resin are arranged along the extending direction on a transparent base made of a flexible material. The transparent base has a depression according to a valley between the pole prisms adjacent to each other. The pole prism has a sloping face extending to an inner wall of the depression. The transparent base is in contact with the valley. A layer not functioning as a prism, that is, a so-called skirt layer does not exist between the transparent base and the pole prisms.

REFERENCES:
patent: 5143672 (1992-09-01), Kuwahara
patent: 2002/0051866 (2002-05-01), Mullen

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