Encapsulated liquid crystal apparatus having low off-axis haze,

Details Encapsulated liquid crystal apparatus having low off-axis haze, Encapsulated liquid crystal apparatus having low off-axis haze,

1991-09-26

1994-02-08

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 94, 359 98, G02F 113

Patent

active

052852997

ABSTRACT:
A liquid crystal apparatus including a low birefringence encapsulated liquid crystal material in a containment medium. The liquid crystal material contains a dye that conforms to the structure of the liquid crystal material. The difference between the ordinary index of refraction and extraordinary index of refraction of the liquid crystal material is between about 0.050 and 0.115. The index of refraction of the containment is greater than the ordinary index of refraction of the liquid crystal material. The liquid crystal apparatus provides low haze at off-axis viewing angles, permits efficient sine-wave power operation, and provides energy control.

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