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Title:
OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/053481
Kind Code:
A1
Abstract:
An optical system (100) of the present invention has a reflective image-forming element (11). A λ/4 wave plate (21a) is disposed on the second main surface side of the reflective image-forming element (11), and a λ/4 wave plate (21b) is disposed on the first main surface side of the reflective image-forming element (11). Furthermore, a polarization plate (22a) is disposed on the opposite side to the reflective image-forming element (11) with respect to the λ/4 wave plate (21a). Layers formed of a transparent member (24) are respectively formed between the reflective image-forming element (11) and the λ/4 wave plate (21b), between the reflective image-forming element (11) and the λ/4 wave plate (21a), and between the λ/4 wave plate (21a) and the polarization plate (22a). The transparent member (24) is optically isotropic, and has a refractive index (n). Light inputted to the λ/4 wave plate (21b) from a subject to be projected (30) is linearly polarized light.

Inventors:
IMAMURA Kentarou (())
今村 健太郎 (())
SHIMATANI Takafumi (())
Application Number:
JP2011/073837
Publication Date:
April 26, 2012
Filing Date:
October 17, 2011
Export Citation:
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Assignee:
SHARP KABUSHIKI KAISHA (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 〒5458522, JP)
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町22番22号 Osaka, 〒5458522, JP)
IMAMURA Kentarou (())
今村 健太郎 (())
International Classes:
G02B17/08; G02B5/08; G02B27/22; G02F1/13; G02F1/1335; G02F1/13363; G09F9/00
Domestic Patent References:
WO2007116639A12007-10-18
Attorney, Agent or Firm:
OKUDA Seiji (OKUDA & ASSOCIATES, 10th Floor Osaka Securities Exchange Bldg., 8-16, Kitahama 1-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
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Claims:



 
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