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:
Feb. 10, 2009
Filed:
Jun. 04, 2004
Objective for a projection apparatus, and corresponding front-projection or backprojection apparatus
Applicants:
Khaled Sarayeddine, Nouvoitou, FR;
Jean-jacques Sacre, Chateaugiron, FR;
Pascal Benoit, Liffre, FR;
Inventors:
Assignee:
Thomson Licensing, Boulogne Billancourt, FR;
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a projection objective comprising at least one lens and intended to transmit a divergent light beam onto a flat screen. A hyperbolically shaped mirror is oriented so as to receive, on its convex face, the light emanating from the lens. The invention also relates to a corresponding projection apparatus.