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:
Mar. 18, 1997
Filed:
May. 11, 1995
John A Clarke, Carshalton, GB;
U.S. Philips Corporation, New York, NY (US);
Abstract
A liquid crystal projection display system includes a liquid crystal display panel (7) which is illuminated by light directed at a small angle (A) to its normal for display contrast enhancement. To reduce defocussing and distortion effects, the panel is tilted with the normal to its plane at an angle (B) to the axis of the projection lens smaller than the illumination angle (A) and a deflector element is disposed between the panel and the projection lens for deflecting the panel output beam so that it is directed generally parallel to the projection lens axis. The panel may be operated in a reflective mode or a transmissive mode. In the latter case, a further deflector element may be disposed adjacent the input side of the panel allowing the axis of illuminating light beam to be arranged parallel with the projection lens axis.