Title:
【発明の名称】液晶を備えた光制御装置
Document Type and Number:
Japanese Patent JPH04502524
Kind Code:
A
Abstract:
PCT No. PCT/CH90/00251 Sec. 371 Date Jun. 20, 1991 Sec. 102(e) Date Jun. 20, 1991 PCT Filed Oct. 26, 1990 PCT Pub. No. WO91/06889 PCT Pub. Date May 16, 1991.A new mode of operation is proposed for light control systems consisting of a combination of liquid crystal cells and polarizers. The direct operation of liquid crystal cells with circularly-polarized light is advantageous in many respects. The circularly-polarized light is produced either with conventional circular polarizers or with monomeric or polymeric cholesteric liquid crystals. The new mode of operation is possible under certain conditions for all liquid crystal cells which hitherto had to be operated with linearly-polarized light.
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Inventors:
Funf Ceiling Yurk
Shut martin
Shut martin
Application Number:
JP51421290A
Publication Date:
May 07, 1992
Filing Date:
October 26, 1990
Export Citation:
Assignee:
Ef Hoffman-La Roche Age
International Classes:
G02F1/13; C09K19/02; C09K19/58; G02B5/30; G02F1/00; G02F1/133; G02F1/1335; G02F1/137; G02F1/139; H04N9/31; (IPC1-7): G02F1/1335; G02F1/137
Domestic Patent References:
| JPS6325626A | 1988-02-03 |
Foreign References:
| US3960438A | 1976-06-01 |
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)