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:
Dec. 23, 2003
Filed:
Feb. 27, 2001
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A projection display system includes: two light sources ( ); a condenser ( ) for condensing the light from the light sources; a time-division color separating optical system ( ) for temporally switching the incident light into a first, second, or third color of light to be emitted; a light valve ( ) capable of modulating the incident light individually for each pixel; a lighting optical system ( ) for directing the light from the time-division color separating optical system onto the light valve, and a projection optical system ( ) for magnifying and projecting a pixel on the light valve. The light from the two light sources ( ) is condensed on the time-division color separating optical system or its vicinity by the condenser ( ), and then superimposed. This can provide a projection display system that performs time-division driving and can achieve high-brightness projection images without increasing the size and cost of a system.