Patents Assigned to GC Communication - Justia Patents Search

Patents Assigned to GC Communication

Method and apparatus for laser machining light guides, light guides obtained thereby, and back-lit screens incorporating such light guides

Patent number: 6467922

Abstract: A method of manufacturing a light guide in the form of a plate having a face with a plurality of diffusing patterns obtained by means of a laser beam, wherein said face is exposed to radiation of intensity lying in the range 104 W/cm2 to 107 W/cm2, in particular in the range 3×104 W/cm2 to 3×106 W/cm2, so as to form surface irregularities and irregularities in depth.

Type: Grant

Filed: July 11, 2000

Date of Patent: October 22, 2002

Assignee: GC Communication

Inventors: Christophe Blanc, Frédéric Chazallet