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Apparatus and method of operating a luminaire

  • US 9,801,248 B2
  • Filed: 08/03/2015
  • Issued: 10/24/2017
  • Est. Priority Date: 07/25/2012
  • Status: Active Grant
First Claim
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1. A luminaire, comprising:

  • at least one solid state light source;

    at least one photosensitive transducer responsive to at least one physical characteristic indicative of at least one light condition in an ambient environment;

    a lamp control subsystem comprising at least one controller and at least one non-transitory processor-readable medium, the lamp control subsystem communicatively coupled to the photosensitive transducer to receive light condition signals indicative of the at least one light condition in the ambient environment sensed by the photosensitive transducer, the lamp control subsystem which;

    determines an expected time for at least a first daily event, the first daily event associated with a respective first illumination condition in the ambient environment;

    detects an illumination condition in the ambient environment that matches the first illumination condition;

    in response to detection of the illumination condition in the ambient environment that matches the first illumination condition, verifies whether a time of detection of the detected illumination condition that matches the first illumination condition is within a threshold of an expected time for the respective first daily event;

    if verified, controls a supply of power to the at least one solid state light source responsive at least in part to the light condition signals from the photosensitive transducer; and

    if not verified, controls a supply of power to the at least one solid state light source according to a schedule, and not according to the light condition signals from the photosensitive transducer.

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