US 2003/0146526 A1 · Compression molding of optical lenses

Abstract

A lens molding system which uses glass molds to mold polycarbonate blanks. The blanks are preheated, then additionally surface heated, molded, and cooled under pressure.

Claims1

Dependent claims

A device and/or method substantially as shown and described.

Dependencies are inferred from the claim text.

Facts

Application

10/368,731Filed 18 Feb 2003

Priority

24 Feb 1999

Published

7 Aug 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification20 codes

B29C 43/021
Of articles of definite length, i.e. discrete articles: characterised by the shape of the surface
B29C 33/3828
Characterised by the material or the manufacturing process: moulds made of at least two different materials having different thermal conductivities
B29C 33/565
Coatings , e.g. enameled or galvanised; Releasing, lubricating or separating agents: consisting of shell-like structures supported by backing material
B29C 43/361
Moulds for making articles of definite length, i.e. discrete articles: with pressing members independently movable of the parts for opening or…

Family

Application09/257,231Continuation · filed 24 Feb 1999

Application09/687,264Continuation · filed 12 Oct 2000

Application10/368,731Continuation · filed 18 Feb 2003

US 6,162,376 ARelated patent

US 6,521,146 B1Related patent

US 2003/0146526 A1This patent

From the US filing history. Foreign family members aren’t listed.

Abstract

A lens molding system which uses glass molds to mold polycarbonate blanks. The blanks are preheated, then additionally surface heated, molded, and cooled under pressure.

Compression molding of optical lenses

Life of this patent

Abstract

Claims1

Compression molding of optical lenses

Life of this patent

Abstract

Claims1