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:
Jun. 06, 2006
Filed:
Sep. 27, 2002
Mitsuhiro Wada, Katano, JP;
Yoshihiro Masumoto, Kobe, JP;
Yoshimasa Fushimi, Neyagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A projection display apparatus includes a light source (), an illumination system (), a reflection system (), a reflection-type light modulator (), a lens element (), and a projection system (). The optical axis () of the illumination system () and the optical axis () of the projection system () are skew lines. The lens element () allows the exit pupil () of the illumination system () to be conjugated substantially with the entrance pupil () of the projection system (). Thus, the reflection-type light modulator () and the projection system () can be arranged coaxially. Moreover, mechanical contact or interference between the optical components can be eliminated, and the space can be utilized efficiently. This configuration can provide an inexpensive compact projection display apparatus using a reflection-type light modulator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile