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. 02, 2011
Filed:
May. 24, 2005
Jonathan A. Sachs, Vancouver, WA (US);
Howard V. Goetz, Tigard, OR (US);
David Keith, Vancouver, WA (US);
Lin LI, St. Petersburg, FL (US);
Steven H. Linn, Hillsboro, OR (US);
Alexander Parfenov, Rancho Palos Verdes, CA (US);
Stephen E. Brice, Portland, OR (US);
Terry J. Scheffer, Hilo, HI (US);
James A. Van Vechten, Corvallis, OR (US);
Jiuzhi Xue, Broomfield, CO (US);
Jonathan A. Sachs, Vancouver, WA (US);
Howard V. Goetz, Tigard, OR (US);
David Keith, Vancouver, WA (US);
Lin Li, St. Petersburg, FL (US);
Steven H. Linn, Hillsboro, OR (US);
Alexander Parfenov, Rancho Palos Verdes, CA (US);
Stephen E. Brice, Portland, OR (US);
Terry J. Scheffer, Hilo, HI (US);
James A. Van Vechten, Corvallis, OR (US);
Jiuzhi Xue, Broomfield, CO (US);
Compound Photonics Limited, Phoenix, AZ (US);
Abstract
An optically addressed, photoconductive spatial light modulator (SLM) operates in a transmissive mode and is capable of modulating a wide spectrum of visible light. There is no pixel structure or native pixel resolution in the SLM. The SLM has no photodiodes and does not rectify. A light projection system () in which one or more SLMs () are placed includes a write (image definition) UV light path () and a read (illumination) visible light path () to form a color image projection display. The write UV light propagates from an image display pattern source () and either sequentially or continuously writes image patterns on the photoconductive SLMs. The read visible light propagates through the SLM and is modulated by an electro-optical material, the optical properties of which change in response to the image structure carried by the write light. The result is a high efficiency display system that delivers high resolution color images through a projection lens () onto a display screen.