Interior indirect lighting
US4569003A · kind A · utility
36Cited by
2References
14Claims
0Family size
Inventors
Key dates
| Filing date | Oct 19, 1984 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Oct 19, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V7/0008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An indirect room lighting system has a diffuse reflecting upper band around the walls about 15 to 24 inches high. A luminaire illuminates this diffuse reflecting band with a beam of light having a radiation pattern broad horizontally and narrow vertically confined essentially to the region of the diffuse reflecting upper bands. The reflector of the luminaire may be positioned at a 45.degree. angle to the walls in the corner, intersecting in the corner, or in the center of the room comprising a Fresnel cylindrical lens, or it may take other forms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.