Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1994-06-15
1996-05-21
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
356 501, 356 503, H01J 4014
Patent
active
055192092
ABSTRACT:
An active imaging system for viewing targets with a high degree of range resolution of approximately one foot. The imaging system utilizes a laser pulse which passes through an electro-optical pulse slicer which creates a sharp leading edge and/or a sharp falling edge on the laser pulse. The laser pulse travels to the target under observation, illuminates and reflects off of the target and returns to a camera. A target is viewed only during the time all or a portion of the returning laser pulse overlaps the time the camera shutter gate is open. The imaging system is particularly suited for determining depth information about a target by varying the time relationship when the returning laser pulse is received by the camera.
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Aschoff Howard E.
Baker Martin C.
Barrett Joseph J.
Rapoport William R.
Shand Michael L.
Allied-Signal Inc.
Kreger, Jr. Verne E.
Nichols Steven L.
Westin Edward P.
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