LED structure with a dynamic spectrum and a method
First Claim
1. A method of adjusting the emission spectrum of an integrated LED structure for photobiological process, comprising:
- generating the emission output by supplying a common current to the semiconductor light emitting sources in the LED structure;
tuning the emission spectrum'"'"'s multiple intensity peaks to a nominal operating point by adjusting the common current value to a mid-value range; and
tuning the emission spectrum'"'"'s multiple peaks'"'"' intensity ratios within the full range by adjusting the common current from a minimum value to a maximum value.
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Abstract
An integrated LED structure and a method of adjusting the emission spectrum of an integrated LED structure, for photobiological process. The structure comprises a substrate; a plurality of optically isolated and electrically non-independent light emission areas integrated on the substrate; a light emitting semiconductor source of a first type mounted in the emission area(s); a light emitting semiconductor source of a second type mounted in the emission area(s); an electrical circuit layer for connecting the said light emitting semiconductor sources in serial fashion for each emission area; and wavelength conversion materials. The emission areas are controlled with a common electrical drive current, and the emission output can be tuned by adjusting the common current value, to enable use of one luminaire for a large variety of biomass growing applications.
25 Citations
9 Claims
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1. A method of adjusting the emission spectrum of an integrated LED structure for photobiological process, comprising:
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generating the emission output by supplying a common current to the semiconductor light emitting sources in the LED structure; tuning the emission spectrum'"'"'s multiple intensity peaks to a nominal operating point by adjusting the common current value to a mid-value range; and tuning the emission spectrum'"'"'s multiple peaks'"'"' intensity ratios within the full range by adjusting the common current from a minimum value to a maximum value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification