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:
Aug. 02, 1994
Filed:
Sep. 23, 1993
David A Braun, Denville, NJ (US);
Terence J Nelson, New Providence, NJ (US);
Lanny S Smoot, Morris Township, Morris County, NJ (US);
Bell Communications Research, Inc., Livingston, NJ (US);
Abstract
A front projection video display system achieves high contrast without darkened ambient room conditions by a specific combination and arrangement of the components of this system. These components include a front-projection video projector which projects an image of particular direction of polarization; polarizing lenses which polarize light radiated from room light fixtures in a direction orthogonal to that of the projected image; a polarizing filter which substantially transmits light polarized parallel to the projected image and substantially blocks light orthogonal to the projected image; and a projection screen which is polarization maintaining and which receives the projected image for viewing by the viewing audience.