Optical element
US7465074B2 · kind B2 · utility
40Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2005 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Feb 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical element is specified that comprises a radiation exit surface shaped so that light exiting through said radiation exit surface is suitable for substantially uniformly illuminating a defined area from a defined distance. The optical element is particularly well suited for use in emergency lighting systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.