Compression molding of optical lenses

Details Compression molding of optical lenses Compression molding of optical lenses

1999-02-24

2000-12-19

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Changing mold size or shape during molding or with shrinkage...

264 27, 425406, 425808, B29D 1100

Patent

active

061623768

ABSTRACT:
A lens molding system which uses glass molds to mold polycarbonate blanks. The blanks are preheated, then additionally surface heated, molded, and cooled under pressure.

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patent: 5458820 (1995-10-01), Lefebvre
patent: 5630967 (1997-05-01), Greshes

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