Lighting fixture including a neutral density polymeric material for controlled light distribution
US5967648A · kind A · utility
15Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Feb 9, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2103/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire having both a direct and indirect lighting component is provided. The luminaire includes a fixture including a lamp. A neutral density polymeric material is disposed below the lamp. The neutral density polymeric material includes a polymeric substrate carrying a predetermined pattern for reflecting and transmitting incident light from the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.