Horticultural lighting device
US11089736B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2017 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Feb 3, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device suitable for promoting plant growth, said lighting device comprising:—(i) a first group of LEDs comprising a plurality of LEDs adapted to generate a first emission spectrum having a peak between 450-460 nm (royal blue light); (ii) a second group of LEDs comprising a plurality of LEDs adapted to generate a second emission spectrum having a peak between 630-670 nm (crimson light); (iii) a third group of LEDs comprising a plurality of LEDs adapted to generate a third emission spectrum having a peak between 720-740 nm (cherry red light); (iv) a fourth group of LEDs comprising a plurality of LEDs adapted to generate white light; wherein the intensity of the light output generated by each group of LEDs is adjustable independently of the other groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.