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. 11, 2010
Filed:
Feb. 08, 2008
Applicant:
William C. Sweatt, Albuquerque, NM (US);
Inventor:
William C. Sweatt, Albuquerque, NM (US);
Assignee:
The United States of America as represented by the United States Department of Energy, Washington, DC (US);
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.