Liquid crystal photoconductive layer including a back-to-back di

Details Liquid crystal photoconductive layer including a back-to-back di Liquid crystal photoconductive layer including a back-to-back di

1991-06-18

1993-08-03

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 74, G02F 11333, G02F 1135

Patent

active

052334503

ABSTRACT:
A liquid crystal element of optical writing type includes a pair of transparent substrates respectively having electrodes formed on the overall surfaces thereof. The liquid crystal element also includes a photoconductive layer formed on one of the transparent substrates and having a back-to-back diode structure, which impedance is to be changed depending on an amount of incident light. The liquid crystal element further includes a mirror layer for reflecting light entered from the other side of a writing side of the photoconductive layer, and a liquid crystal layer disposed between the pair of transparent substrates.

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I. Abdulhalim, G. Moddel, K. M. Johnson, and C. M. Walker, "Optically Addressed Electroclinic Liquid Crystal Spatial Light Modulator with an a-Si:H Photodiode" Journal of Non-Cystalline Solids 115 pp. 162-164 (1989).

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