Method of selectively tinting cast lenses

Details Method of selectively tinting cast lenses Method of selectively tinting cast lenses

1985-10-07

1987-02-03

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

8507, 264 21, 351162, B29D 1100

Patent

active

046408053

ABSTRACT:
A method of coloring predetermined areas of cast contact lenses by placing a coating of soluble dye on the mold surface in the area to be colored. The liquid lens monomer is added to the mold and dissolves the dye from the mold surface before being polymerized to form a solid contact lens. After being polymerized the lens containing the dye in its polymer structure is removed from the mold.

REFERENCES:
patent: 2241415 (1941-05-01), Moulton
patent: 4553975 (1985-11-01), Su
patent: 4582402 (1986-04-01), Knapp

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