Illumination device having optical particles for diffusing light
US7220025B2 · kind B2 · utility
2Cited by
23References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2003 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Aug 28, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device comprising: a body member; one or more sources of light aligned on a longitudinal axis of, and lying within, the body member; one or more transparent regions of the body member through which light from the or each source passes when the source or sources are energized; and optical particles such as balls or chips of glass lying in the body member and extending between the or each source and that side of the or each transparent region which is directed towards the inside of the body member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.