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:
Oct. 19, 1982
Filed:
Sep. 29, 1980
Applicant:
Inventors:
Martin Dotsko, Binghamton, NY (US);
Robert E Klemm, Binghamton, NY (US);
David L Peters, Whitney Point, NY (US);
Assignee:
The Singer Company, Binghamton, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
350117 ; 350125 ; 350126 ;
Abstract
The invention is a variable gain non-Lambertian screen surface (12) for employment in a visual display system. The screen surface provides constant image brightness, independent of changes in viewing angle (22). It is therefore suitable for off-axis viewing. The screen gain continuously varies from a magnitude of one to infinity at different portions on the screen surface in such a manner that the equivalent gain preceived by an off-axis viewer (16) corresponds to the viewer perceiving constant image brightness, independent of changes in the viewing angle.