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:
Aug. 08, 2006
Filed:
Oct. 12, 2004
Nobuo Watanabe, Shiojiri, JP;
Kiyotaka Nakano, Matsumoto, JP;
Toshio Matsumiya, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An optical component casing includes a lower casing in which a plurality of optical components are arranged, a lid-shaped upper casing () that closes the lower casing, and an optical component holding frame () that holds an incident-side polarization plate and a visual-angle correcting plate for arranging them at predetermined positions inside the lower casing. An optical component holding frame supporting surface (A) is formed on an upper side of the upper casing () to rotatably support the optical component holding frame (). The optical component holding frame () includes a polarization plate holding frame () for holding the incident-side polarization plate, and a correcting plate holding frame () for holding the visual-angle correcting plate. The polarization plate holding frame () slides on the optical component holding frame supporting surface (A) of the upper casing () and has a rotation guiding surface (B) for rotatably supporting the correcting plate holding frame ().