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:
Jul. 01, 2003
Filed:
Mar. 20, 2001
Andrew F. Kurtz, Rochester, NY (US);
Joshua M. Cobb, Victor, NY (US);
David Kessler, Rochester, NY (US);
Barry D. Silverstein, Rochester, NY (US);
Michael E. Harrigan, Victor, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A digital cinema projector ( ) for projection of color images onto a display surface comprises a light source ( ), which produces a beam of light. Beam-shaping optics ( ) homogenize and focus the beam of light and color splitting optics ( ) separate focus beam of light into separate color beams. A first modulation optics system comprises a prepolarizer ( ), which prepolarizes a first color beam; a wire grid polarization beamsplitter ( ), which transmits a first predetermined polarization state of the prepolarized beam; a reflective spatial light modulator ( ), which alters the transmitted prepolarized beam with information and reflects the image bearing first color beam through the wire grid polarization beamsplitter ( ); and a wire grid polarization analyzer ( ), which transmits the image bearing first color beam and attenuates unwanted polarization components. A recombination prism ( ) combines the first color beam from the first modulation optical system with other image bearing color beams to create a full color image bearing beam. A projection lens system ( ) projects the full color image bearing beam onto the display surface ( ).