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Calibration operation of a lighting device

  • US 9,554,446 B2
  • Filed: 04/10/2014
  • Issued: 01/24/2017
  • Est. Priority Date: 04/19/2013
  • Status: Active Grant
First Claim
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1. A controller comprising:

  • an input for receiving a reading from a light sensor representing a sensed light level;

    presence detection logic for detecting presence based on a presence sensor, and configured to indicate a set-point to bring at least one lighting device to an operative level in response to a positive detection of presence; and

    calibration logic for performing a calibration operation, by causing a light output of the lighting device to change between a first, lower level and a second, higher level, and calibrating the set-point based on the reading from the light sensor under influence of the first and second levels;

    wherein the calibration logic is configured to trigger the calibration operation to be performed in response to said positive detection of presence.

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