Document Type and Number:
Japanese Patent JPS5034556
Kind Code:
A
Abstract:
A light control element having a wide viewing angle includes two biaxial electro-optic crystal plates having thicknesses of retardations equal to each other, and resulting in an equivalent uniaxial crystal plate, and a uniaxial crystal plate conjugate to the electro-optic crystal plates and having a thickness of the equivalent uniaxial retardation of the biaxial electro-optic crystal plate arrayed in cascade in the direction of light incidence. The anisotropy of the biaxial electro-optic crystal is perfectly compensated not only for normally incident light but also for obliquely incident light.
Application Number:
JP8490773A
Publication Date:
April 02, 1975
Filing Date:
July 30, 1973
Export Citation:
International Classes:
G01R19/145; G02F1/03; G02F1/05; (IPC1-7): G02F1/03
Domestic Patent References:
| JPS4839059A | 1973-06-08 |