Volume phase hologram with liquid crystal in microvoids between

Details Volume phase hologram with liquid crystal in microvoids between Volume phase hologram with liquid crystal in microvoids between

1991-07-10

1993-03-30

Arnold, Bruce Y.

Optical: systems and elements

Holographic system or element

Having particular recording medium

359 7, 359 52, 359 94, 430 1, G02B 532, G02F 113, G03H 102

Patent

active

051989123

ABSTRACT:
Composite holograms are disclosed wherein microvoids between the holographic interference fringes are filled with a liquid crystal. The diffraction efficiency and other holographic properties of such composite holograms may be varied by external stimuli, e.g., application of an electric field of thermal energy.

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