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. 23, 1996
Filed:
Sep. 15, 1994
Arthur P Minich, San Diego, CA (US);
David W Kappel, San Diego, CA (US);
Proxima Corporation, San Diego, CA (US);
Abstract
A compact projection illumination system includes a display controller, a condenser lens assembly including a light source, and a pair of finely faceted mirrors angularly disposed relative to one another to spread projection light emitted from the high intensity projection light source in two directions, and direct the reflected light to an image forming display device where an image is formed for projection purposes. The light is spread to illuminate precisely the light impinging surface of the image forming display device. To reduce image distortion caused by the faceted mirrors forming beam segments, the condenser lens assembly and the light source are arranged and constructed to permit the reflected beam segments to converge sufficiently to fill in dark or shadow areas between the beam segments prior to the segments impinging on the image forming display device, so that the resulting image is formed uniformly and substantially distortion free in a narrowly defined, compact space.