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:
Aug. 04, 2009
Filed:
Mar. 16, 2006
Lin LI, St. Petersburg, FL (US);
Israel J. Morejon, Tampa, FL (US);
Evan O'sullivan, Safety Harbor, FL (US);
Lin Li, St. Petersburg, FL (US);
Israel J. Morejon, Tampa, FL (US);
Evan O'Sullivan, Safety Harbor, FL (US);
Abstract
An image presentation device () incorporates an optical combiner () that utilizes a multi-state optical switch () for use with a plurality of colored light sources (). The switch () includes an electronically switchable holographic optical element HOE () having a first and a second mode of operation. Light from first and second light sources () passes through HOE () in a diffracted manner in at least one of the first and second modes of operation. Light from a third light source () is reflected by a reflector () in a third mode of operation. The combiner () operates to combine light from the various light sources () into a common light path.