Patent · US Active

Light emitting device using filter element

US8651703B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

INTELLECTUAL DISCOVERY CO., LTD. · KR

Inventors

Kum Soon Wong · Kuala Lumpur, MY
Farn Hin Chen · Ipoh, MY
Kean Loo Keh · Air Itam, MY

Key dates

Filing date	Apr 9, 2010
Grant date	Feb 18, 2014
Priority date	—
Expiry date	Jun 7, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/856
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light emitting device with at least one LED die, a filter element and a reflective element. The filter element may be configured to preferentially attenuate light passing through the filter element, such that light output has improved color uniformity when compared to similar light emitting devices without a filter element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.