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. 13, 1990
Filed:
Nov. 21, 1988
Applicant:
Inventors:
Frederic J Kahn, Palo Alto, CA (US);
Paul N Kendrick, Sunnyvale, CA (US);
Jerry Leff, Saratoga, CA (US);
Linden J Livoni, Los Gatos, CA (US);
Bryan E Loucks, Los Alto Hills, CA (US);
David E Stepner, Cupertino, CA (US);
Kenneth G Witte, San Jose, CA (US);
Assignee:
Greyhawk Systems, Inc., Milpitas, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
353122 ; 353 38 ; 353102 ;
Abstract
An image projection apparatus in which an image object plane contains a plurality of reflecting images and a light source and optical system projects a beam on each of said plurality of images. Spaced projection lenses are positioned to receive the light reflected from the image and direct the light on a projection surface with the plurality of reflected images in coregistration.