Patent Number: 6,804,055

Title: Fresnel lens for use with rear projection display

Abstract: The ultra-thin rear projection display device described herein includes a wide angle lens system and one or more planar mirrors that are parallel to a screen on which an image is to be displayed. In one embodiment, the screen that has multiple groove angles to provide better illumination than screens with a single groove angle.

Inventors: Peterson; Mark David (Lake Oswego, OR), Gohman; Jeffrey Alan (Hillsboro, OR)

Assignee: InFocus Corporation

International Classification: G03B 21/06 (20060101); G03B 021/60 ()

Expiration Date: 10/12/2021