Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1982-03-15
1984-09-04
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
350 9615, 350 9625, 358200, H01J 516, G02B 516
Patent
active
044699417
ABSTRACT:
An optical image scanner utilizing an integral array of fiber optic launch couplers to direct an input light image to a selectively reflective termination and then to an output termination. The selectively reflective termination is sequenced to scan the bidirectional fibers of the launch coupler array to direct, in turn, the light transmitted through the launch coupler to the output. Thus, an input light image, applied in parallel, is scanned to develop a serial output for the respective pixels of the image. In one particular arrangement in accordance with the invention, the selectively reflective termination comprises an array of binary driven Faraday rotators. In an alternative arrangement, the reflective scanner comprises a rotating disc with a single reflective spot positioned near the periphery and facing the terminal ends of the bidirectional fibers of the launch coupler array. In still another arrangement, the reflective scanner comprises a liquid crystal array and the image scanner is combined with a CCD register for signal storage and readout.
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Bissell Henry M.
General Dynamics Pomona Division
Johnson Edward B.
Nelms David C.
Westin Edward P.
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