×

Lighting control device having a corrector integrally with a controller thereof for correcting a dimming prescribed range stored therein

  • US 10,390,401 B2
  • Filed: 09/02/2016
  • Issued: 08/20/2019
  • Est. Priority Date: 09/10/2015
  • Status: Active Grant
First Claim
Patent Images

1. A lighting control device, comprising:

  • a pair of input terminals electrically connected to an illumination load and an AC power supply;

    a bidirectional switch configured to switch between conduction and non-conduction of a bidirectional current between the pair of input terminals;

    an inputter configured to receive a dimming level specifying a magnitude of a light output of the illumination load;

    a controller configured to control the bidirectional switch so as to retain the bidirectional switch in an ON state for an on time having a length determined in accordance with the dimming level within a prescribed range in each of half periods of an AC voltage of the AC power supply; and

    a corrector configuredto determine, with reference to a determination condition, whether or not a target waveform which is a waveform of at least one of a voltage and a current input to the pair of input terminals has an anomaly andto correct the prescribed range so as to narrow the prescribed range when the target waveform has the anomaly.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×