Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1992-05-05
1993-07-20
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250225, 250226, 250214AG, 358 29, 358 42, H01J 3150, G01J 350, H04N 964
Patent
active
052296008
ABSTRACT:
A color preserving image intensifier having synchronously reciprocating input and output multi-segmented, multi-color filter slides. To compensate for differences in exposure time of the segments of the filters arising from varying reciprocation velocity due, e.g. to sinusoidal motion, either the intensity of the output image is variably filtered or the intensifier gain is varied. In one embodiment, polarizing filters rotated in synchronicity with the reciprocation of the color preserving filters vary image intensity. In another embodiment, intensifier gain is varied based upon a velocity indicator.
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Fischer, "Obtaining Color Pictures With An Image Intensifier Tube," RCA TN No. 556, Mar. 1964, pp. 1-2.
Hogan Patrick M.
ITT Corporation
Messinger Michael
Nelms David C.
Plevy Arthur L.
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