Title:
POLARIZING LIGHT GUIDE PLATE, ILLUMINATING DEVICE, AND PROJECTION DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/125479
Kind Code:
A1
Abstract:
Disclosed is a polarizing light guide plate which comprises: a light guide body (10) which has opposing surfaces, wherein one of the surfaces serves as an emitting surface (10a); a reflective layer (12) provided on the other surface of the opposing surfaces of the light guide body (10); a plurality of half-wavelength plates (11) formed on the emitting surface (10a) of the light guide body (10) at regular intervals in a certain direction; and a plurality of anisotropic refraction portions (13) formed along the other surface at regular intervals in the certain direction within the light guide body (10). The anisotropic refraction portion (13) is provided such that a refractive index with respect to a first polarized light is smaller than that of the light guide body (10) and a refractive index with respect to a second polarized light is larger than that of the light guide body (10).
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Inventors:
SAITOH, Goroh (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
齋藤 悟郎 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 〒1088001, JP)
IMAI, Masao (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
今井 雅雄 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 〒1088001, JP)
齋藤 悟郎 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 〒1088001, JP)
IMAI, Masao (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
今井 雅雄 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 〒1088001, JP)
Application Number:
JP2011/056761
Publication Date:
October 13, 2011
Filing Date:
March 22, 2011
Export Citation:
Assignee:
NEC CORPORATION (7-1 Shiba 5-chome, Minato-ku Tokyo, 01, 〒1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目７番１号 Tokyo, 〒1088001, JP)
SAITOH, Goroh (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
齋藤 悟郎 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 〒1088001, JP)
IMAI, Masao (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目７番１号 Tokyo, 〒1088001, JP)
SAITOH, Goroh (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
齋藤 悟郎 (〒01 東京都港区芝五丁目７番１号 日本電気株式会社内 Tokyo, 〒1088001, JP)
IMAI, Masao (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
International Classes:
F21S2/00; F21V9/14; G02B5/00; G02B5/30; G02B6/00; G02F1/13; G02F1/13357; F21Y101/02
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (8th Floor, 16th Kowa Bldg.9-20, Akasaka 1-chom, Minato-ku Tokyo 52, 〒1070052, JP)
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