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. 11, 1997
Filed:
Jun. 01, 1995
Adrianus H van den Brandt, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An illumination device for supplying a beam of linearly polarized light having a non-rotationally symmetrical cross-section at the location of an object to be illuminated is described, which device comprises a light source, a reflector, an optical integrator (54, 82) for forming said beam cross-section and for realizing a uniform light distribution across the beam cross-section, and a polarizing system for converting the light supplied by the source into linearly polarized light. Since the polarizing system is arranged in the radiation path in front of the optical integrator, the device can be implemented with a small number of components and in a compact manner. The device may be used to great advantage in an image projection apparatus.