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:
Nov. 18, 2014
Filed:
Oct. 13, 2011
Chohei Ono, Ibaraki, JP;
Shinro Inui, Ibaraki, JP;
Masayuki Fukui, Ibaraki, JP;
Kazuomi Kaneko, Hitachi, JP;
Nobuki Matsui, Hitachi, JP;
Chohei Ono, Ibaraki, JP;
Shinro Inui, Ibaraki, JP;
Masayuki Fukui, Ibaraki, JP;
Kazuomi Kaneko, Hitachi, JP;
Nobuki Matsui, Hitachi, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
Provided is a projection video display device with which a sliding load is minimized while maintaining an adjustment precision in a lens shift mechanism. A lens shift mechanism () which moves a projection lens in a direction which is orthogonal to the optical axis of projected light has a configuration in which mobile bases (), which retain the projection lens, slide using a shaft (), which is attached on a fixed member () side, as a guide member. A further aspect of the configuration is that a correction screw is inserted from the rear face side of the fixed member () to make contact with the shaft (), and optical axis tilt and misalignment of the projection lens are corrected by adjusting the degree of insertion of the correction screw.