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Integrated solid state light emitting and detecting array and apparatus employing said array

  • US 5,319,182 A
  • Filed: 03/04/1992
  • Issued: 06/07/1994
  • Est. Priority Date: 03/04/1992
  • Status: Expired due to Fees
First Claim
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1. An optical information detecting apparatus comprising:

  • an integrated, solid state structure further comprisinga plurality of photonic diodes configured as a plurality of light sensors and a plurality of light emitting elements disposed on a substrate and are electrically isolated from one another, said light sensors being optically isolated from said light emitting elements, said diodes having a vertical structure, comprising a plurality of identically fabricated layers, corresponding layers of said diodes being mutually coplanar;

    circuit means connected to said light sensors for enabling said diodes to detect light, whereby a signal is generated in response to said detected light; and

    means for directing light that emanates from said light emitting elements to a target and for returning light that contains optical information to said light sensors, said means for directing light being external to said solid state structure;

    whereby said signal is indicative of an optical characteristic of said target.

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