Method of dyeing an optical article

Details Method of dyeing an optical article Method of dyeing an optical article

1986-05-19

1987-12-01

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

Contact lens

351159, D06P 500

Patent

active

047101997

ABSTRACT:
A method of dyeing an optical article in which the article is immersed in a dyeing solution which is heated and subjected to ultrasonic energy. The article is immersed for a time span commensurate with the desired tint or hue after which the article is cleaned and dried. As a result, eyeglass lenses made of a plastic material, or mineral glass, can be produced at a reproducible quality of dye and color gradient.

REFERENCES:
patent: 4442788 (1984-04-01), Weis

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