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. 13, 2005
Filed:
Apr. 23, 2003
Hidehiro Ikeda, Yokohama, JP;
Masahiko Yatsu, Fujisawa, JP;
Koji Hirata, Yokohama, JP;
Junichi Ikoma, Yokosuka, JP;
Hidehiro Ikeda, Yokohama, JP;
Masahiko Yatsu, Fujisawa, JP;
Koji Hirata, Yokohama, JP;
Junichi Ikoma, Yokosuka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A projection type image display apparatus having an image display element outputting an image ray, a projection lens apparatus for performing overhead projection of the image ray from the image display element, the projection lens apparatus having a plurality of lens elements, a reflection mirror reflecting the image ray from the projection lens apparatus, and a screen on which the image ray reflected by the reflection mirror is projected. An optical axis of the projection lens apparatus is decentered from a center of the screen.