US 12,292,326 B2
Emitter module for an LED illumination device
Kuo-Lih Chang, Austin, TX (US); Mickey Malone, Paige, TX (US); and Horace C. Ho, Austin, TX (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Jun. 18, 2024, as Appl. No. 18/746,643.
Application 18/746,643 is a continuation of application No. 18/220,774, filed on Jul. 11, 2023, granted, now 12,050,126.
Application 18/220,774 is a continuation of application No. 17/665,921, filed on Feb. 7, 2022, granted, now 11,740,123, issued on Aug. 9, 2023.
Application 17/665,921 is a continuation of application No. 16/834,368, filed on Mar. 30, 2020, granted, now 11,243,112, issued on Feb. 8, 2022.
Application 16/834,368 is a continuation of application No. 16/231,925, filed on Dec. 24, 2018, granted, now 10,605,652, issued on Mar. 31, 2020.
Application 16/231,925 is a continuation of application No. 14/314,482, filed on Jun. 25, 2014, granted, now 10,161,786, issued on Dec. 25, 2018.
Prior Publication US 2024/0337527 A1, Oct. 10, 2024
Int. Cl. G01J 1/02 (2006.01); G01J 1/32 (2006.01); G01J 3/02 (2006.01); G01J 3/46 (2006.01); G01J 3/50 (2006.01); H05B 45/20 (2020.01); H05B 45/46 (2020.01); H05B 47/19 (2020.01); G01J 1/42 (2006.01); G01J 1/44 (2006.01); H05B 47/195 (2020.01)
CPC G01J 1/0252 (2013.01) [G01J 1/32 (2013.01); G01J 3/0286 (2013.01); G01J 3/465 (2013.01); G01J 3/502 (2013.01); G01J 3/505 (2013.01); H05B 45/20 (2020.01); H05B 45/46 (2020.01); H05B 47/19 (2020.01); G01J 2001/4252 (2013.01); G01J 2001/444 (2013.01); H05B 47/195 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An illumination device, comprising:
a substrate having a first surface and a second surface transversely opposed to first surface across a thickness of substrate, wherein the substrate includes material having a first thermal conductivity;
a light-emitting diode (LED) array disposed on the first side of substrate, the LED array including a plurality of LEDs, each of the plurality of LEDs having a different emission spectrum;
at least one photodetector disposed proximate the LED array on the first side of the substrate;
a thermally transmissive layer disposed on the second side of substrate, the thermally transmissive layer including a material having a second thermal conductivity greater than the first thermal conductivity;
a plurality of thermally conductive pathways thermally conductively coupling each of the plurality of LEDs to the thermally transmissive layer—each of the thermally conductive pathways including a material having a third thermal conductivity greater than the first thermal conductivity; and
control circuitry coupled to the plurality of LEDs, the control circuitry to:
for each of the plurality of LEDs, at each of a plurality of ambient temperatures:
apply a plurality of different level drive currents to the respective LED while applying a non-operative drive current to the remaining plurality of LEDs;
measure a luminous output of the respective LED using the at least one photodetector; and
generate a luminous output curve as a function of drive current.