Method of molding a colored contact lens

Details Method of molding a colored contact lens Method of molding a colored contact lens

1988-07-21

1991-07-23

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 14, 264 21, 351162, B29D 1100

Patent

active

050341669

ABSTRACT:
A process for the manufacture of a molded contact lens containing a transparent central visual region circumscribed by a colored iris portion which comprises
a. coating a colored liquid which is either curable or thermoplastic in a mold for making a contact lens onto a surface thereof where the iris portion of the lens is formed to produce a colored film thereon which film contains a surface exposed to the interior of the mold and a surface in contact with the mold,
b. charging the mold with the resin used to form the body of the lens while maintaining the colored film in the iris portion and configuring the resin about the colored film whereby the surface of the film becomes integral with the body of the lens and the surface of the film becomes part of the outer surface of the lens when the molded lens is removed from the mold.

REFERENCES:
patent: 3536386 (1970-10-01), Spivack
patent: 3712718 (1973-01-01), LeGrand et al.
patent: 4447474 (1984-05-01), Neefe
patent: 4558931 (1985-12-01), Fuhrman
patent: 4582402 (1986-04-01), Knapp
patent: 4640805 (1987-02-01), Neefe
patent: 4681412 (1987-07-01), Lemelson
patent: 4702574 (1987-10-01), Bawa
patent: 4710327 (1987-12-01), Neefe
patent: 4774035 (1988-09-01), Carmelite et al.
patent: 4919850 (1990-04-01), Blum et al.

Affiliated with

Also associated with

Rating

Method of molding a colored contact lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of molding a colored contact lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of molding a colored contact lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-431227