US 11,980,144 B2
Light source for plant cultivation
Mark McClear, Ansan-si (KR)
Assigned to SEOUL SEMICONDUCTOR CO., LTD., Ansan-si (KR)
Filed by SEOUL SEMICONDUCTOR CO., LTD., Ansan-si (KR)
Filed on Apr. 10, 2023, as Appl. No. 18/297,882.
Application 18/297,882 is a continuation of application No. 17/713,918, filed on Apr. 5, 2022, granted, now 11,622,509.
Application 17/713,918 is a continuation of application No. 16/506,731, filed on Jul. 9, 2019, granted, now 11,304,376, issued on Apr. 19, 2022.
Claims priority of provisional application 62/850,122, filed on May 20, 2019.
Prior Publication US 2023/0240197 A1, Aug. 3, 2023
Int. Cl. A01G 7/04 (2006.01); A01G 9/20 (2006.01); H05B 45/20 (2020.01)
CPC A01G 7/045 (2013.01) [A01G 9/20 (2013.01); H05B 45/20 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A light emitting device, comprising:
a substrate;
a first light emitter disposed on the substrate and configured to emit a first light having a first peak at a wavelength from about 400 nm to about 500 nm and a first sub-peak having a full-width at half-maximum greater than a full-width at half-maximum of the first peak; and
a second light emitter disposed on the substrate and configured to emit a second light having a second peak at a wavelength from about 500 nm to about 700 nm, the second peak having a different intensity from an intensity of the first sub-peak of the first light;
a controller electrically connected to the first light emitter and the second light emitter; and
a power supply electrically connected to the first light emitter and the second light emitter and configured to supply power to the first light emitter and the second light emitter,
wherein the first sub-peak and the second peak are located at different wavelengths from each other in spectrum of the first light and the second light,
wherein a combined spectrum of the first light and the second light has a first valley between the first peak and the first sub-peak, and
wherein the intensity of the first peak in the combined spectrum is higher than an intensity of the first sub-peak in the spectrum.