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:
Oct. 18, 2011
Filed:
Jun. 20, 2008
Applicant:
Pierre St. Hilaire, Belmont, CA (US);
Inventor:
Pierre St. Hilaire, Belmont, CA (US);
Assignee:
AllView Research LLC, Belmont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A front projection system comprises a display source and a front projection screen. A rear projection system comprises a display source and a rear projection screen. The display source generates illumination. The front or rear projection screen comprises a plurality of high aspect ratio structures are configured to act as a Bragg selective holographic element. The plurality of high aspect ratio structures are configured to diffract the illumination toward a viewer.