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Retro-reflective optical transceiver

  • US 5,121,242 A
  • Filed: 02/04/1991
  • Issued: 06/09/1992
  • Est. Priority Date: 02/04/1991
  • Status: Expired due to Term
First Claim
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1. A retro-reflective optical transceiver adapted to receive information encoded on incoming light rays transmitted by a distant source and transmit information to said source by encoding light rays reflected by said transceiver to said source, said transceiver comprising:

  • a corner cube reflector having a first end adapted to receive said incoming light rays;

    three mutually perpendicular reflective faces adapted to reflect a portion of said incoming light rays back toward said source in a direction substantially parallel to said incoming light rays; and

    a substantially transmissive aperture adapted to permit a portion of said incoming light rays to pass through said corner cube reflector;

    receiver means adapted to receive said incoming light rays passing through said aperture and detect information encoded on said light rays; and

    an optical switch in optical alignment with said first end of said corner cube reflector, adapted to modulate the intensity of said light rays reflected by said corner cube reflector back toward said source.

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