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:
May. 01, 2007
Filed:
Jun. 09, 2004
Koji Hirata, Tokyo, JP;
Shuji Kato, Yokohama, JP;
Masahiko Yatsu, Fujisawa, JP;
Tsutomu Nakashima, Yokohama, JP;
Hidehiro Ikeda, Yokohama, JP;
Koji Hirata, Tokyo, JP;
Shuji Kato, Yokohama, JP;
Masahiko Yatsu, Fujisawa, JP;
Tsutomu Nakashima, Yokohama, JP;
Hidehiro Ikeda, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a projection type image display apparatus, a projector optical unit for projecting an image onto a screen while magnifying a size of the image to be projected with respect to an original size of the image displayed by an image forming element, has a group of lenses for magnifying the size of the image with respect to the original size thereof, and an optical path extending from the image forming element to the screen to transmit the image along the optical path.