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:
Sep. 16, 2003
Filed:
Dec. 31, 2001
Michael T. Davis, Richardson, TX (US);
Douglas W. Anderson, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An optical engine (15) for an SLM-type display system, which may be either a front or rear projection system ( ). The optical engine ( ) provides for a high contrast, telecentric illumination angle to the SLM ( ) without compromising brightness by vignetting due to offset in the pupil. The resulting offset pupil is converted to a telecentric, on-axis image by a relay path ( ) between the SLM ( ) and the projection lens ( ). The relay path ( ) places the image at an intermediate image plane accessible by a the projection lens ( ), which permits the projection lens ( ) to be telecentric without an offset pupil.