US 12,342,432 B2
Color temperature control of a lighting device
Matthew R. Blakeley, Allentown, PA (US); Christopher M. Green, Austin, TX (US); Peter MacLellan, Austin, TX (US); Robert C. Newman, Jr., Emmaus, PA (US); and Jaykrishna A. Shukla, Mays Landing, NJ (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Aug. 14, 2023, as Appl. No. 18/233,557.
Application 18/233,557 is a continuation of application No. 17/219,399, filed on Mar. 31, 2021, granted, now 11,743,985.
Claims priority of provisional application 63/022,095, filed on May 8, 2020.
Claims priority of provisional application 63/003,138, filed on Mar. 31, 2020.
Prior Publication US 2023/0389149 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H05B 45/20 (2020.01); H05B 45/10 (2020.01); H05B 47/11 (2020.01); H05B 47/16 (2020.01); H05B 47/19 (2020.01)
CPC H05B 45/20 (2020.01) [H05B 45/10 (2020.01); H05B 47/11 (2020.01); H05B 47/16 (2020.01); H05B 47/19 (2020.01)] 53 Claims
OG exemplary drawing
 
1. A lighting device comprising:
a wireless communication circuit that is configured to communicate wireless messages;
a lighting load;
a drive circuit for controlling the lighting load to emit light having a first color; and
a control circuit configured to:
receive, via the wireless communication circuit, a first message indicating a second color;
determine whether the first color and the second color are on a black body curve;
in response to determining that the first color and the second color are on the black body curve, control the drive circuit to fade the light emitted by the lighting load to a plurality of correlated color temperature (CCT) chromaticity values along the black body curve between the first color and the second color in a CCT chromaticity space; and
in response to determining that one or more of the first color or the second color are not on the black body curve, control the drive circuit to fade the light emitted by the lighting load from the first color to the second color in an XY chromaticity space.