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:
Mar. 12, 2013
Filed:
Sep. 04, 2009
Alban N. Lescure, Redmond, WA (US);
Markus Duelli, Seattle, WA (US);
Mark O. Freeman, Snohomish, WA (US);
Alban N. Lescure, Redmond, WA (US);
Markus Duelli, Seattle, WA (US);
Mark O. Freeman, Snohomish, WA (US);
Microvision, Inc., Redmond, WA (US);
Abstract
An imaging system (), such as a scanned laser projection system, includes one or more laser sources () configured to produce one or more light beams (), and a light modulator () configured to produce images () from the light beams (). Optional optical alignment devices () can be used to orient the light beams () into a combined light beam (). A beam separator (), which can be any of a birefringent wedge, compensated birefringent wedge, or a polymerized liquid crystal layer, is disposed between at least one of the laser sources () and the light modulator (). The beam separator () is configured to receive light from the laser sources () and deliver two angularly separated and orthogonally polarized light beams () to the light modulator () so as to reduce speckle appearing when the images () are displayed on a display surface ().