The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 1999
Filed:
May. 23, 1996
Applicant:
Inventors:
Eric Marcellin-Dibon, Rennes, FR;
Valter Drazic, Betton, FR;
Assignee:
Thomson multimedia S.A., Boulogne Cedex, FR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359487 ; 359483 ; 359485 ;
Abstract
An optical polarization device including a source of light emitting a light beam, and a polarization beam splitter for reflecting the s-polarization component of the light beam and transmitting the p-polarization component. A Fresnel structure with a reflective coating receives the s-polarization component, rotates it 90 degrees and returns it to the beam splitter. A plate of micro-prisms, functioning in reflection total, recombine the two polarization components of the light beam so as to produce a collimated beam.