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:
Jan. 28, 2003
Filed:
Nov. 27, 2001
Shigekazu Yamagishi, Osaka, JP;
Hiroshi Miyai, Hyogo, JP;
Hitoshi Noda, Osaka, JP;
Atsushi Hatakeyama, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
Three colors of light beams from a light source travel via a first optical system to strike a reflecting surface of a rotating polygon mirror, or mirrors, at different angles without overlapping. The rotating polygon mirror or mirrors reflect the light beams for scanning. The reflected light beams enter a second optical system at different angles to illuminate an image display panel at different portions. On the image display panel, belt-like regions illuminated by the light beams of individual colors are formed in parallel with each other, and these illuminated regions are moved continuously by scanning. A formed color image is magnified and projected by a projection optical system. With such a projection type image display apparatus, a display having high resolution and light efficiency that is also small, thin and inexpensive is achieved.