Liquid crystal modulator including a diffuser with plural phase

Details Liquid crystal modulator including a diffuser with plural phase Liquid crystal modulator including a diffuser with plural phase

1991-04-04

1993-07-06

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 74, G02F 11335, G02F 11333

Patent

active

052259200

ABSTRACT:
Light emitted from a coherent light source undergoes fine adjustment of its polarizing direction by a polarizing device and is directed to a liquid crystal device through a collimating optical system. The polarizing device is capable of fine-adjusting the polarizing direction in accordance with the wavelength of the incident light, thereby providing a high contrast ratio. When an image is recorded by holography using such a liquid crystal spacial light modulator, it is possible to obtain an image of high quality.

REFERENCES:
patent: 3736047 (1973-05-01), Gelber et al.
patent: 4505547 (1985-03-01), Sekimura et al.
patent: 4715686 (1987-12-01), Iwashita et al.
patent: 5046827 (1991-09-01), Frost et al.
patent: 5148302 (1992-09-01), Nagano et al.

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