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:
Nov. 16, 1999
Filed:
Nov. 04, 1997
Stephen J Reinsch, Vista, CA (US);
Hughes-JVC Technology Corporation, Carlsbad, CA (US);
Abstract
A high contrast polarizer and color beam splitter for use in a full color light valve projector includes a light source for providing input light on a first optical axis and first, second and third light valves for modulating light of first, second and third colors. The polarizer and color beam splitter includes a color and angle sensitive interface, located on the first optical axis, for reflecting at least part of the input light. A polarizer, located on a second optical axis, receives the input light reflected by the color and angle sensitive interface and reflects light of a first polarization along the second optical axis. A first color separator, located on the second optical axis at a first angle with respect to a plane orthogonal to the second optical axis, reflects light of the first color onto the color and angle sensitive interface. The color and angle sensitive interface transmits the light of the first polarization and the first color, received from the first color separating means, onto the first light valve. The polarizer and color beam splitter minimizes the angle of the first color separator to decrease the phase change and increase contrast while maintaining a compact size.