Dynamic lighting device with controlled color temperature
US11927343B2 · kind B2 · utility
0Cited by
1References
20Claims
0Family size
Inventors
Key dates
| Filing date | Sep 30, 2020 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Sep 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable angle beam control device is capable of maintaining the same color temperature of the light source regardless of the changes in the angle of the beam. The controllable light beam device has a light source with primary optics producing a low divergence light beam having an inverted angular distribution of the correlated color temperature (CCT), and a liquid crystal device with an electrically variable refractive index distribution arranged to receive said light beam and to provide a variable angle beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.