Reflector and LED light-emitting unit using the same
US8096679B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 3, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | May 27, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED light-emitting unit comprises an LED element having an optical axis and a reflector covering the LED element. The reflector comprises a light-reflecting unit recessed downwardly from a top surface of a top wall of the reflector and located corresponding to the LED element. The light-reflecting unit has a reflecting face comprising two curved faces intersecting with each other at two lines. The curved faces have axes intersecting with each other. A distance between two intersecting points of the two lines with a cross section of the reflector which is parallel to the top surface of the top wall of the reflector is larger than that between any other two intersecting points of the reflecting face intersecting with the cross section of the reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.