Patent · US Expired

Optical element

US7465074B2 · kind B2 · utility

40Cited by
11References
19Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 14, 2005
Grant dateDec 16, 2008
Priority date
Expiry dateFeb 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.