Method for forming plastic optical quality spectacle lenses

Details Method for forming plastic optical quality spectacle lenses Method for forming plastic optical quality spectacle lenses

1990-10-10

1993-01-12

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 17, 264 23, 264 26, B29D 1100

Patent

active

051788004

ABSTRACT:
A fast, relatively inexpensive method and simple is disclosed for producing a finished plastic multifocal or progressive lens from a preformed lens which has a predetermined lens correction (i.e., curvature or prescription) at its optical center. The disclosed method produces a finished lens which has a multifocal or progressive region without changing the lens correction at the optical center of the lens.

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Patent Abstracts of Japan, P885, (13261), 16 Jun. 1989, & JP, A, 105517 (Hitachi Chem. Corp. Ltd.) 2 Mar. 1989.

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