Luminaire with uplight control
US4858091A · kind A · utility
39Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Dec 1, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V5/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved luminaire having uplight control to provide uniform ceiling illumination and downward light control below horizontal to uniformly distribute downward light with the added feature of eliminating glare between the 60.degree.-90.degree. vertical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.