US 12,295,076 B2
Lighting apparatus and lighting system including the same
Jun Ho Song, Ansan-si (KR); and BoYong Han, Ansan-si (KR)
Assigned to Seoul Semiconductor Co., Ltd., Ansan-si (KR)
Filed by Seoul Semiconductor Co., Ltd., Ansan-si (KR)
Filed on Sep. 27, 2023, as Appl. No. 18/373,519.
Application 18/373,519 is a continuation of application No. 18/092,335, filed on Jan. 1, 2023, granted, now 11,800,614.
Application 18/092,335 is a continuation of application No. 17/392,160, filed on Aug. 2, 2021, granted, now 11,546,978, issued on Jan. 3, 2023.
Application 17/392,160 is a continuation of application No. 16/698,836, filed on Nov. 27, 2019, granted, now 11,083,060, issued on Aug. 3, 2021.
Claims priority of provisional application 62/773,364, filed on Nov. 30, 2018.
Claims priority of provisional application 62/776,098, filed on Dec. 6, 2018.
Prior Publication US 2024/0032168 A1, Jan. 25, 2024
Int. Cl. H05B 45/20 (2020.01); H01L 25/075 (2006.01); H01L 33/50 (2010.01); H05B 45/10 (2020.01); H05B 47/11 (2020.01); H05B 47/16 (2020.01); H05B 47/175 (2020.01)
CPC H05B 45/20 (2020.01) [H01L 25/0753 (2013.01); H01L 33/50 (2013.01); H05B 45/10 (2020.01); H05B 47/11 (2020.01); H05B 47/16 (2020.01); H05B 47/175 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A lighting apparatus comprising:
a controller; and
an LED luminaire configured to emit light having a color temperature in a range of a minimum color temperature of 3,000K or less to a maximum color temperature of 5,000K or more,
wherein the LED luminaire includes a first light emitter, a second light emitter, and a third light emitter,
wherein the controller is configured to control the first, second, and third light emitters to provide light having the color temperature,
wherein the first light emitter is configured to emit a first light, the second light emitter is configured to emit a second light, and the third light emitter is configured to emit a third light,
wherein in a CIE-1931 coordinate system, the first light has a first color coordinate and the second light has a second color coordinate,
wherein the first color coordinate is different from the second color coordinate,
wherein the first color coordinate has an x-coordinate that is equal to or less than an x-coordinate of a color temperature of 10,000K,
wherein a y-coordinate of the second color coordinate is set between 0 and 1, and
wherein a color temperature of light emitted by the first, second, and third light emitters has high fidelity (Rf), and the Rf of at least a fraction of light having a color temperature from 2700K to 6500K is 95 or more.