Method for molding contact lenses

Details Method for molding contact lenses Method for molding contact lenses

1993-10-05

1997-02-11

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Including step of mold making

264 18, 425808, B29D 1100

Patent

active

056017596

ABSTRACT:
A method of molding a series of contact lenses having a range of optical powers using a matrix of posterior and anterior molds having varying surface characteristics such that the optical powers vary while maintaining constant fitting characteristics, and using a number of mold types which is less than the total number of contact lenses produced in the series.

REFERENCES:
patent: 2394941 (1946-02-01), Smith
patent: 3806079 (1974-04-01), Beattie
patent: 4383672 (1983-05-01), Kreuttner
patent: 4640489 (1987-02-01), Larsen
patent: 4836960 (1989-06-01), Spector et al.
patent: 5178801 (1993-01-01), Shimizu et al.
patent: 5200121 (1993-04-01), Hagmann et al.

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