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US 11,953,195 B2Granted
Solid-state grow-lights for plant cultivation
AssigneeBridgelux, Inc.
InventorsYi-Qun Li, Jing Qiong Zhang
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Abstract
There is provided a light emitting device, for example a grow-light, comprising: a first solid-state light source that generates blue light with a blue photon flux; and a second solid-state light source that generates red light with a red photon flux; wherein a ratio of the blue photon flux to red photon flux is from about 1:3 to about 3:1. It may be that the broadband blue light substantially matches at least one of: the absorption peak wavelength of chlorophyll-a; the absorption peak wavelength of chlorophyll-b; and the absorption peak wavelength of carotenoid.
Claims8
A grow-light comprising:
- a first solid-state light source for generating blue light with a blue photon flux;
- and
- a second solid-state light source for generating red light with a red photon flux;
- wherein a ratio of the blue photon flux to red photon flux is from about 1:3 to about 3:1;
- and
- wherein the first solid-state light source is for generating a first broadband blue light with a maximum emission intensity wavelength from 420 nm to 450 nm with a first blue photon flux, and a second broadband blue light with a maximum emission intensity wavelength from 460 nm to 470 nm with a second blue photon flux, and wherein a ratio of the first blue photon flux to the second blue photon flux is from about 2:1 to about 4:1.
3 more elements
Dependencies are inferred from the claim text.