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US 2020/0045892 A1Published application
Light emission source led component, horticultural light, and horticultural lighting fixture
AssigneeValoya Oy
InventorLars AIKALA
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Abstract
A lighting fixture for facilitating plant growth and a light emitting component. The fixture includes a single light emission source LED device which provides at least two emission peaks in the wavelength range of 300-800 nm and at least one of the emission peaks has Full Width of Half Maximum (FWHM) at least 50 nm or higher. The emission peaks of the LED match well with a plant photosynthesis response spectrum and is therefore particularly suitable for high efficiency artificial lighting.
Claims15
A single light emission source light emitting diode (LED) component comprising:
- a single semiconductor LED chip having an emission peak between wavelengths of 400 nm and 470 nm and configured to generate first spectral characteristics of the single light emission source LED component;
- and
- a first phosphor and a second phosphor disposed in proximity to the single semiconductor LED chip and covering the single semiconductor LED chip, the first and second phosphors being configured to down-convert a part of a radiation power of the semiconductor LED chip,
- the first phosphor having a first emission peak between wavelengths of 400 nm and 800 nm,
- the second phosphor having a second emission peak between wavelengths of 400 nm and 800 nm,
- the first emission peak being different from the second emission peak, and
- the first phosphor and the second phosphor being configured to generate second spectral characteristics of the single light emission source LED component at wavelengths of 400-800 nm.
4 more elements
Dependencies are inferred from the claim text.