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, 1985
Filed:
Apr. 21, 1983
Applicant:
Inventor:
Bertram VanBreemen, Indianapolis, IN (US);
Assignee:
RCA Corporation, Princeton, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
350128 ; 350123 ;
Abstract
A rear projection television receiver incorporates a screen which includes a prism lens arrangement. The prism lens comprises a number of prism lens elements made up of a plurality of lens surfaces or facets. The individual facets of a given prism lens element form different angles with respect to a vertical plane. The prism lens forms the vertical audience envelope of the screen, which results from a combination of the vertical audience envelope contributed by the differently angled facets, thereby giving a great deal of control over the shape of the envelope.