Title:
【発明の名称】偏光子
Document Type and Number:
Japanese Patent JP2509372
Kind Code:
B2
Abstract:
The polariser consists of a layer which is arranged in the beam path of the light, is made from a cholesteric liquid crystal having a Grandjean structure, and in which the light in a specific waveband is selectively and circularly polarised, reflected or transmitted with a reversed sense of rotation, and of a mirror which reverses the direction of rotation of the circularly polarised light. The component reflected by the mirror is likewise transmitted. When the liquid crystal layer is concentric with respect to the source of the natural light and the mirror is spherical, the result is a light source for circularly polarised light. A projection system is produced by combining two such polarisers as polariser and analyzer and a liquid crystal display cell arranged therebetween for modulating the intensity of the polarised light.
Inventors:
EMU II BARUNIKU
ESU UEE BERYAAEFU
YURUKU FUYUNFUSHIIRINGU
EN UEE MARIMONENKO
MAACHIN SHATSUTO
KURAUSU SHUMITSUTO
ESU UEE BERYAAEFU
YURUKU FUYUNFUSHIIRINGU
EN UEE MARIMONENKO
MAACHIN SHATSUTO
KURAUSU SHUMITSUTO
Application Number:
JP18255590A
Publication Date:
June 19, 1996
Filing Date:
July 10, 1990
Export Citation:
Assignee:
EFU HOFUMAN RA ROSHU AG
NIOPITSUKU MOSUKUWA RISAACHI ANDO PURODAKUSHON ASOSHEESHON
NIOPITSUKU MOSUKUWA RISAACHI ANDO PURODAKUSHON ASOSHEESHON
International Classes:
C09K19/02; C09K19/58; G02B5/30; G02F1/00; G02F1/13; G02F1/133; G02F1/1333; G02F1/13357; G02F1/139; H04N9/31; G02F1/1335; (IPC1-7): G02B5/30
Domestic Patent References:
| JPS59116613A | ||||
| JPH01133003A | ||||
| JPS52129450A | ||||
| JPH02132411A |
Foreign References:
| EP0302619A2 | ||||
| US4073571A |
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)