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

Claim 16:
17. A plant cultivation device comprising:
a housing having an inner space capable of growing plants;
a light source disposed on the housing and configured to emit light into the inner space; and
a controller disposed on the housing and operable to turn on one or more emitters in the light source during a light period,
wherein the light source includes:
a first light emitter having a first active layer emitting light having a first peak wavelength within a first color wavelength band range,
a second light emitter having a second active layer emitting light having a second peak wavelength within a second wavelength band range, and
a third light emitter having a third active layer emitting light having a third peak wavelength different to the second peak wavelength,

wherein the controller operates the light source to provide a light having a first spectral pattern,
wherein the first spectral pattern includes the first peak wavelength having a relatively high intensity and the third peak wavelength having a lower intensity than the first peak wavelength, and
wherein at least one of the first, second, and third light emitters is off during a light period for at least one of a plurality of growth modes of the plants.