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:
Feb. 02, 1993
Filed:
Sep. 20, 1991
Applicant:
Inventor:
Christopher W Mathewson, Rochester, NY (US);
Assignee:
Sayett Group, Inc., Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 53 ; 359 40 ; 359 71 ;
Abstract
Display apparatus for forming an image from a plurality of image modulators located at different distances from an image surface includes illumination means for forming an illumination beam, a plurality of image forming modulators disposed at different distances from the image surface, for forming a composite image on the image surface, path length correcting means disposed between the plurality of image forming modulators and the image surface, for equalizing the optical path lengths between the image forming modulators and the image surface, so that the composite image can be focused.