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:
Jul. 29, 1997
Filed:
Nov. 13, 1995
Takashi Kashihara, Nara, JP;
Tadayoshi Yamada, Toyono-gun, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In the optical coupling system where the space between projection lens and CRT is connected with a liquid, this invention aims to offer a projection lens unit wherein the angle of CRT relative to the optical axis of projection lens (tilt angle) may be changed by quite a simple operation; thereby the CRT tilt angle can be reset to an optimum when the angle of projection oblique to a screen shifts. Namely, a first housing and a second housing in which an optical coupling liquid is contained and sealed are coupled together with an watertight structure like a piston and cylinder and fixed, and a ring cam for regulating the relative space and tilt is held between the two housings; by fastening the two housings together with bolts, etc. the two housings can be set at a desired relative positioning.