Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1992-06-30
1993-10-26
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
359318, 356121, 250551, G01J 120
Patent
active
052568695
ABSTRACT:
A method and apparatus for performing free space optical interconnection. A micro-mirror type of spatial light modulator has an array of mirror elements, whose height with respect to a deflection plane can be individually adjusted. These heights are adjusted such that an input beam of light is phase modulated, and by interference, it is deflected to a desired detector. More than one input beam can be used with the same spatial light modulator, whose mirror elements are adjusted in patterns for deflecting and focussing to multiple detectors.
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"4.times.4 free-space optical switching using real-time binary phase-only holograms generated by a liquid-crystal display", Hirofumi Yamazaki and Massayasu Yamaguchi, Optics Letters, Sep. 15, 1991, vol. 16, No. 18, pp. 1415-1417.
Lin Tsen-Hwang
Magel Gregory A.
Burton Dana L.
Kesterson James C.
Messinger Michael
Nelms David C.
Stoltz Richard A.
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