Patent Number: 7,086,745

Title: Optical component casing, optical device and projector

Abstract: An optical component casing includes a lower casing in which a plurality of optical components are arranged, a lid-shaped upper casing (472) that closes the lower casing, and an optical component holding frame (446) 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 (4471A) is formed on an upper side of the upper casing (472) to rotatably support the optical component holding frame (446). The optical component holding frame (446) includes a polarization plate holding frame (4461) for holding the incident-side polarization plate, and a correcting plate holding frame (4462) for holding the visual-angle correcting plate. The polarization plate holding frame (4461) slides on the optical component holding frame supporting surface (4471A) of the upper casing (472) and has a rotation guiding surface (4461B2) for rotatably supporting the correcting plate holding frame (4462).

Inventors: Watanabe; Nobuo (Shiojiri, JP), Nakano; Kiyotaka (Matsumoto, JP), Matsumiya; Toshio (Matsumoto, JP)

Assignee: Seiko Epson Corporation

International Classification: G03B 21/14 (20060101); G02F 1/1333 (20060101); G03B 21/22 (20060101)

Expiration Date: 8/08/02018