Light emitting unit with reflector for uniform light emission
US9157603B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2013 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Dec 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/856
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting unit includes a light source device and a reflector. The light source device extends in parallel with an extension direction, and is capable of providing a light beam. The reflector is configured under the light source device and extends in parallel with the extension direction. The reflector has a first protrusion and a pair of second protrusions located on two sides of the first protrusion, the first protrusion has a peak portion and two trough portions, the second protrusion has a peak portion and a trough portion, and the two trough portions of the first protrusion are respectively connected to the trough portions of the two second protrusions to provide a fluctuant reflection surface, and a height of a cross section contour of the pair of the second protrusions in parallel with the extension direction is decreased from a center to two ends of the reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.