Patent ID: 11917958
Assignee: SEOUL VIOSYS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC A  H  Y | IPC A  H

Claim 9:
10. A plant cultivation light source, comprising:
a first light emitter having a first energy band gap of a first active layer,
a second light emitter having a second energy band gap of a second active layer, and
a third light emitter having a third energy band gap of a third active layer,
a controller operable to turn on one or more of the first, second, and third light emitters during each of a plurality of light periods,
wherein the first energy band gap has longer peak wavelength than the second energy band gap,
wherein the first energy band gap has longer peak wavelength than the third energy band gap,
wherein the plurality of light periods comprises a first light period and a second light period, and
wherein at least one of the first, second, third light emitter is off depending on a growth mode of the plant during the second light period.