Real time image subtraction with a single liquid crystal light v

Details Real time image subtraction with a single liquid crystal light v Real time image subtraction with a single liquid crystal light v

1986-01-30

1987-11-17

Miller, Stanley D.

35016215, 350342, 350345, 350339F, G02B 2746, G02F 113

Patent

active

047070773

ABSTRACT:
A technique for subtracting images in real time utilizing a single liquid crystal light valve (LCLV) is described. The two images are projected on the LCLV through a common grating in a well-determined geometry. The interrogating light beam is optically filtered, so that only different features in the two images are revealed.

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patent: 4124278 (1978-11-01), Grinberg et al.
patent: 4127322 (1978-11-01), Jacobson et al.
Ebersole, "Optical Image Subtraction", vol. 14, No. 5, Sep.-Oct. 1975, Optical Engineering.

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