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:
Apr. 12, 2005
Filed:
Mar. 30, 2004
Barry D. Silverstein, Rochester, NY (US);
Heidi L. Hall, Webster, NY (US);
Barry D. Silverstein, Rochester, NY (US);
Heidi L. Hall, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A digital projection apparatus () for projection of a multicolor image. A light source () provides visible light and a dichroic separator () splits the visible light into color light beams. Illumination optics directs each of the color light beams into a corresponding light modulation assembly (). A magnifying relay lens () for each color light beam focuses and relays the modulated light to form a magnified real image of the reflective spatial light modulator (). A dichroic combiner () forms a multicolor image by overlapping the magnified real images corresponding to each of the color light beams on a common optical axis. A projection lens projects the multicolor image toward a display surface. The polarization analyzers () are tilted relative to a local optical axis and are located in proximity to at least one of the magnified real images of the color light beams.