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Optical detection system

  • US 10,295,658 B2
  • Filed: 10/01/2015
  • Issued: 05/21/2019
  • Est. Priority Date: 10/02/2014
  • Status: Active Grant
First Claim
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1. An active optical detection system comprising:

  • a signal generator configured to generate a plurality of signal patterns, each signal pattern comprising a unique transmit bit pattern;

    an optical transmitter comprising a plurality of light sources, each light source being aligned to a different transmission angle, wherein the optical transmitter is configured to transmit light from each light source in accordance with one of the signal patterns of the plurality of signal patterns;

    an optical receiver configured to receive light as a receive bit pattern; and

    processing circuitry configured to;

    determine a correlation between the receive bit pattern and one of the unique transmit bit patterns of the plurality of signal patterns, wherein the correlation between the receive bit pattern and the one of the unique transmit bit patterns determines a correlation spike that is indicative of a range to an object; and

    determine a direction to the object based on the correlation and the transmission angle associated with the signal pattern for the one of the unique transmit bit patterns.

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