LIGHTING ASSEMBLY
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Accused Products
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.
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Citations
65 Claims
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1-34. -34. (canceled)
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35. A horticultural lighting fixture comprising at least one Light Emitting Diode (LED) having
a) first spectral characteristics including a peak in the wavelength range from 600 to 700 nm and arranged to exhibit a full width of half maximum of at least 50 nm or more; -
b) second spectral characteristics with a maximum of 50 nm full width of half maximum and arranged to exhibit a peak wavelength in the range from 440 to 500 nm, and c) all or part of the emission at a frequency of 600-800 nm is generated using a whole or partial wavelength up-conversion of the LED chip radiation power. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 64)
a) the first LED diode has first phosphorescent spectral characteristics comprising a peak wavelength in the wavelength range of 600 to 700 nm and is arranged to exhibit at least a full width of half maximum of at least 50 nm; b) the first LED further having second luminescent spectral characteristics comprising a peak in the wavelength range of 440 to 500 nm; and c) the first LED optionally having third phosphorescent spectral characteristics of a freely adjustable peak wavelength in the range of 500 nm to 800 nm range arranged to exhibit at least 30 nm full width of half maximum; d) first emission intensities of the first, second and optional third spectral characteristics being adjustable in any ratio.
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48. The lighting fixture of claim 47, comprising second LED with at least one luminescent spectral characteristics with maximum 50 nm full width of half maximum and peak wavelength in the range of 400 to 500 nm and optional phosphorescent second and third spectral characteristics having freely adjustable peak wavelengths in the range of 450 nm to 800 nm.
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49. The lighting fixture of claim 35, wherein the said up-conversion of LED emission is arranged to be established by means of any of the following:
- at least one semiconductor quantum dot, phosphor-material, and/or sulfide-material.
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64. A method for enhancing plant growth wherein at least one lighting fixture of claim 35 emits light to at least one plant.
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36. A horticultural lighting fixture comprising at least one Light Emitting Diode (LED) having
a) first spectral characteristics including a peak in the wavelength range from 600 to 700 nm and arranged to exhibit a full width of half maximum of at least 50 nm or more; -
b) second spectral characteristics with a maximum of 50 nm full width of half maximum and arranged to exhibit a peak wavelength in the range from 440 to 500 nm, and c) at least a part or the whole of the emission at wavelengths of 500-600 nm is arranged to be minimized and/or omitted and/or to be reduced below the intensity in 400-500 nm band and below the intensity in 600-700 nm band.
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50. A lighting fixture for facilitating plant growth comprising a luminescent UV LED, optionally with external emission characteristics, said LED arranged to exhibit
a) first phosphorescent spectral characteristics with a peak wavelength in the range of 350 to 550 nm; -
b) second optional phosphorescent spectral characteristics with a peak wavelength in the range of 600 to 800 nm; c) third optional phosphorescent spectral characteristics with a peak wavelength freely adjustable between 350 and 800 nm; d) the phosphorescent emission intensities of first, optional second and optional third spectral characteristics being adjustable in any ratio to accommodate plant growth.
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51. A light emitting component of a horticultural light, comprising;
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a light emitting compound semiconductor chip; and a light wavelength up-conversion phosphor which is deposited in direct proximity of the LED chip; said component being capable of emitting two characteristic light emission peaks, and all or part of the emission at a frequency of 600-800 nm is generated using a whole or partial wavelength up-conversion of the LED chip radiation power, the two characteristics light emission peaks are at 440 nm-500 nm and 600-700 nm, respectively. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65)
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52. A light emitting component of a horticultural light, comprising;
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a light emitting compound semiconductor chip; and a light wavelength up-conversion phosphor which is deposited in direct proximity of the LED chip; said component being capable of emitting two characteristic light emission peaks, and emission at wavelengths of 500-600 nm is arranged to be minimized and to be reduced below the peak intensity in 400-500 nm band and below the peak intensity in 600-700 nm band.
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Specification