Method for forming an optical element

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Changing mold size or shape during molding or with shrinkage...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C065S102000, C264S002700, C425S808000

Reexamination Certificate

active

07611648

ABSTRACT:
The invention relates to a process for forming an optical element. A forming tool is used having a plurality of molding or hot-embossing portions formed on a surface thereof for molding or hot-embossing optical structures onto a substrate. On the surface of the substrate there is formed at least one preformed portion. The substrate is heated to a temperature above a transition temperature and the forming tool and the substrate are pressed against each other for forming an optical element having a plurality of structures having an optical effect, wherein the shape of the structures having an optical effect is given by the respective associated molding or hot-embossing portion.According to the invention, when the forming tool and the substrate are pressed against each other, the respective preformed portion of the substrate first of all gets into contact to the associated molding or hot-embossing portion or to the forming tool at a central area so that a nip, which is formed between a surface of the respective preformed portion and a surface of the associated molding or hot-embossing portion or of said forming tool extends and broadens from said central area towards an edge of the respective preformed portion or of said substrate. According to the invention the substrate and said forming tool are provided with a substantially identical base so that the deformation ratio of the substrate is advantageously low.

REFERENCES:
patent: 5436764 (1995-07-01), Umetani et al.
patent: 6070436 (2000-06-01), Hirota et al.
patent: 6305194 (2001-10-01), Budinski et al.
patent: 6368524 (2002-04-01), Fujita et al.
patent: 648712 (1995-04-01), None
patent: 04187533 (1992-07-01), None
patent: 2000053428 (2000-02-01), None
patent: 2002-293553 (2002-10-01), None
Abstract of B1.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

Rate now

     

Profile ID: LFUS-PAI-O-4114654

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.