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US 12,514,168 B2Granted
Light source for plant cultivation
AssigneesIndustry-University Cooperation Foundation of Chungbuk National University, Seoul Viosys Co., Ltd.
InventorsMyung-Min Oh, Yoon-Seon Choi
Life of this patent
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Abstract
A light source for plant cultivation includes at least two light emitting devices supplying light to a plant. Each of the light emitting devices includes a first semiconductor layer doped with a first conductivity type dopant, a second semiconductor layer disposed on the first semiconductor layer and doped with a second conductivity type dopant different from the first conductivity type dopant, and an active layer interposed between the first semiconductor layer and the second semiconductor layer. The light emitting devices emit light towards the plant under a different condition in terms of at least one of wavelength, radiation intensity, and emission timing to control the type and content of phytochemicals in the plant.
Claims20
A light device, comprising:
- a light source;
- a controller connected to the light source through a wire;
- a fluid regulator connected to the controller;
- and
- a power supplier configured to supply electric power to the light source,
- wherein the light source includes a first light emitter and a second light emitter, each of the first light emitter and the second light emitter including:
- a first semiconductor layer doped with a first conductivity type dopant;
- a second semiconductor layer disposed on the first semiconductor layer and doped with a second conductivity type dopant that is different from the first conductivity type dopant;
- and
- an active layer interposed between the first semiconductor layer and the second semiconductor layer,
- wherein the first light emitter is configured to emit a first light having a first light spectrum, and the second light emitter is configured to emit a second light having a second light spectrum,
- wherein the first light spectrum includes at least one peak wavelength that is different from a peak wavelength of the second light spectrum,
- wherein the controller is configured to operate the first and second light emitters to emit light under one of different conditions, each of the different conditions including at least one of a different light spectrum, a different radiation intensity, or a different emission timing,
- wherein the controller is configured to select one of the different conditions for operation of the first and second light emitters based on a user input,
- wherein the operation is varied such that the first light emitter emits the first light in a first condition, and the second light emitter emits the second light in a second condition, and
- wherein the first condition uses a first radiation intensity that is less than a second radiation intensity used in the second condition.
13 more elements
A light device, comprising:
- a light source;
- a controller connected to the light source through a wire;
- a regulator connected to the controller and configured to control a fluid flow;
- and
- a power supplier configured to supply electric power to the light source,
- wherein the light source includes a first light emitter and a second light emitter,
- wherein the first light emitter is configured to emit a first light having a first peak wavelength, and the second light emitter is configured to emit a second light having a second peak wavelength,
- wherein the first peak wavelength and the second peak wavelength are in different color ranges,
- wherein the controller is configured to operate the first and second light emitters to emit light under one of different conditions, each of the different conditions including at least one of a different light spectrum, a different radiation intensity, or a different emission timing,
- wherein the controller is configured to select one of the different conditions for operation of the first and second light emitters,
- wherein the operation is varied such that the first light emitter emits the first light and the second light emitter emits the second light, and
- wherein a first radiation intensity of the first light is lower than a second radiation intensity of the second light.
9 more elements
A light device, comprising:
- a light source;
- a controller connected to the light source through a wire;
- and
- a fluid regulator connected to the controller,
- wherein the light source includes:
- a first semiconductor layer doped with a first conductivity type dopant;
- a second semiconductor layer disposed on the first semiconductor layer and doped with a second conductivity type dopant that is different from the first conductivity type dopant;
- and
- an active layer interposed between the first semiconductor layer and the second semiconductor layer,
- wherein the controller is configured to operate the light source to adjust at least one of a wavelength, a radiation intensity, or an emission timing,
- wherein the controller is configured to vary operation of the light source based on a user input,
- wherein the operation is varied such that the light source emits a first light in a first condition and the light source emits a second light in a second condition, and
- wherein a first radiation intensity of the first light is lower than a second radiation intensity of the second light.
10 more elements
Dependencies are inferred from the claim text.