Lighting device, lighting attachment device, and method for manufacturing lighting cover
US11639784B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 30, 2020 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Dec 31, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V14/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device, a lighting attachment device, and a method of manufacturing a lighting cover having a film coated with an optical-scattering agent are provided. The lighting device includes: a lighting unit having a lighting cover, the lighting cover having an adjustable degree of optical scattering; and a control unit configured to adjust the lighting cover to an appropriate degree of optical scattering according to the growth state of a cultivation subject. The method for manufacturing a lighting cover includes: partitioning a lighting cover of a synthetic resin material into a plurality of scattering zones; and coating an optical-scattering agent on the lighting cover such that each of the scattering zones has a different degree of optical scattering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.