Luminaire of variable color temperature for obtaining a blend color light of a desired color temperature from different emission-color light sources
US5350977A · kind A · utility
233Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1993 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Jun 8, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire of variable color temperature is arranged for emitting blended color light from luminaire section, with color temperature control signals so transmitted from control section to luminaire-lighting section as to substantially equalize respective differences in reciprocal color temperatures of respective two adjacent stages of the color temperature control signals, to thereby render blended state of emission colors to be variable and a dimming of the blended color light to be realized with the color temperature gradually varied in smooth manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.