Method and apparatus for making lenses

Details Method and apparatus for making lenses Method and apparatus for making lenses

1994-11-22

1997-05-20

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Changing mold size or shape during molding or with shrinkage...

264 27, 264 136, 4251744, 4251748E, 425407, 425808, B29D 1100

Patent

active

056309678

ABSTRACT:
A method for forming a preform mass of thermoplastic material into a lens by compression molding between a pair of molds without the formation of air bubbles or the entrapment of air pockets in the finished lens by preheating the preform mass and molds, and further continuing to apply increased pressure while increasing the temperature or maintaining a predetermined temperature and pressure until the mass has been compressed between the two molds into the shape of a substantially finished lens.

REFERENCES:
patent: 5032160 (1991-07-01), Murata et al.
patent: 5100590 (1992-03-01), Ruhlin
patent: 5188650 (1993-02-01), Nomura
patent: 5368790 (1994-11-01), Greshes

Affiliated with

Also associated with

Rating

Method and apparatus for making lenses 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 and apparatus for making lenses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for making lenses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1721888