Twisted nematic liquid light valve with birefringence compensati

Details Twisted nematic liquid light valve with birefringence compensati Twisted nematic liquid light valve with birefringence compensati

1981-04-01

1983-10-11

Evans, F. L.

350335, 350342, G02F 1133

Patent

active

044088396

ABSTRACT:
This invention is a light valve using birefringent nematic liquid crystals in which compensation for residual birefringence is achieved by passing light through two separate liquid crystal layers having their major optical axes twisted oppositely along an axis parallel to the direction of light propagation and aligned perpendicular to one another at the interface between the two liquid crystal layers.

REFERENCES:
patent: 3881808 (1975-05-01), Gurtler et al.
Grinberg et al., Optical Engineering, vol. 14, No. 3, May-Jun. 1975, pp. 217-225.

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