Title:
STEREOSCOPIC VISION RECOGNITION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/073736
Kind Code:
A1
Abstract:
Disclosed is a stereoscopic vision recognition system with which generation of crosstalk at oblique view angles can be reduced. The stereoscopic vision recognition system includes: a video display device which comprises a first linear polarisation element provided on the observer side; a first λ/4 sheet which is provided on the observer side of the first linear polarisation element; and active shutter spectacles which comprise, from the outside and in the following order, a second λ/4 sheet, a liquid crystal cell, and a second linear polarisation element. If the angle made by the transmission axis of the first linear polarisation element and the in-plane retardation axis of the first λ/4 sheet is defined as φ1, and the angle made by the transmission axis of the second linear polarisation element and the in-plane retardation axis of the second λ/4 sheet is defined as φ2, 40°≤φ1≤50° and 130°≤φ2≤140° or 130°≤φ1≤140° and 40°≤φ2≤50° are satisfied and the NZ coefficient of the first λ/4 sheet is less than 1.
Inventors:
HASEGAWA Masahiro (())
長谷川 雅浩 (())
長谷川 雅浩 (())
Application Number:
JP2011/076773
Publication Date:
June 07, 2012
Filing Date:
November 21, 2011
Export Citation:
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)
HASEGAWA Masahiro (())
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)
HASEGAWA Masahiro (())
International Classes:
G02F1/13; G02B27/26; G02F1/1335; G02F1/13363; G02F1/1347; H04N13/04
Attorney, Agent or Firm:
YASUTOMI & Associates (5-36, Miyahara 3-chome Yodogawa-ku, Osaka-sh, Osaka 03, 〒5320003, JP)
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Claims:
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