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:
Sep. 29, 2015
Filed:
Oct. 13, 2011
Kazumasa Ueoka, Ibaraki, JP;
Shinro Inui, Ibaraki, JP;
Chohei Ono, Ibaraki, JP;
Kazuomi Kaneko, Hitachi, JP;
Kazumasa Ueoka, Ibaraki, JP;
Shinro Inui, Ibaraki, JP;
Chohei Ono, Ibaraki, JP;
Kazuomi Kaneko, Hitachi, JP;
HITACHI MAXELL, LTD., Osaka, JP;
Abstract
Provided is a projection video display device with which precision of location of each component of the optical engine and the projection optical assembly is maintained and display video quality not impaired even if exterior force is sustained. A projection video display device comprises an optical engine () which projects light which is emitted from a light source () upon a liquid-crystal panel () and forms a video, and a projection optical assembly () which projects an enlargement of the video which is emitted from the optical engine (). The projection optical assembly () and the optical engine () are configured to be anchored to a common base () which retains these in an integrated manner, with the common base () being attached to the casing of the device.