Liquid crystal light valve goggles for eye protection

Details Liquid crystal light valve goggles for eye protection Liquid crystal light valve goggles for eye protection

1989-12-12

1992-01-14

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 42, 359 44, 359 67, 359 72, 340705, G02F 1133, G09G 302

Patent

active

050815423

ABSTRACT:
An eye protection device 10 comprising a liquid crystal light valve 20 for providing an image of a scene. The light valve images the field of view under observation in a spectral range which matches the human eye. It will automatically reject a laser threat by simply absorbing the energy therefrom in the photoconductive layer thereof. Thus, the invention 10 provides a broad spectrum, zero response time, angle and polarization independent, sensitive eye protection device having a fast recovery time, high extinction coefficient and a high damage threshold. Hence, the invention is expected to be of significant utility to personnel operating in hostile environments.

REFERENCES:
patent: 4424529 (1984-01-01), Roese et al.
patent: 4462661 (1984-07-01), Witt
patent: 4561731 (1985-12-01), Kley
patent: 4997263 (1991-03-01), Cohen et al.
Moran, "Integrated Military Aircraft Displays and Controls," SID Digest, Apr. 1980, pp. 32-33.
"The Silicon Liquid-Crystal Light Valve", U. Efron et al., Journal of Applied Physics, vol. 57 (4), Feb. 15, 1985, pp. 1356-1368.

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