US 11,991,799 B2
Systems, methods, and devices for creating a custom output spectral power distribution
William R. Florac, Verona, WI (US); Evan Gnam, Middleton, WI (US); Wendy Luedtke, Brooklyn, NY (US); Gary Bewick, Cross Plains, WI (US); and Michael Wood, Austin, TX (US)
Assigned to Electronic Theatre Controls, Inc., Middleton, WI (US)
Filed by Electronic Theatre Controls, Inc., Middleton, WI (US)
Filed on Oct. 14, 2021, as Appl. No. 17/501,946.
Claims priority of provisional application 63/093,952, filed on Oct. 20, 2020.
Prior Publication US 2022/0124884 A1, Apr. 21, 2022
Int. Cl. H05B 45/20 (2020.01); H05B 45/22 (2020.01); H05B 45/3577 (2020.01); H05B 47/125 (2020.01); H05B 47/14 (2020.01)
CPC H05B 45/20 (2020.01) [H05B 45/22 (2020.01); H05B 45/3577 (2020.01); H05B 47/125 (2020.01); H05B 47/14 (2020.01)] 21 Claims
OG exemplary drawing
 
1. A method for operating a lighting fixture with a plurality of light sources at a target chromaticity with a target output spectral power distribution, the method comprising:
determining a first distance between the target chromaticity and a first chromaticity with a first spectral power distribution;
determining a second distance between the target chromaticity and a second chromaticity with a second spectral power distribution;
scaling the first spectral power distribution by a first scaling factor to arrive at a first scaled spectral power distribution, the first scaling factor is based on the first distance;
scaling the second spectral power distribution by a second scaling factor to arrive at a second scaled spectral power distribution, the second scaling factor is based on the second distance;
adding the first scaled spectral power distribution and the second scaled spectral power distribution to arrive at the target output spectral power distribution at the target chromaticity; and
driving the plurality of light sources at intensities corresponding to the target output spectral power distribution.