Light-emitting device with light guide for two way illumination
US9752757B2 · kind B2 · utility
1Cited by
49References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2014 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jan 25, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variety of light-emitting devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, a light-emitting device includes one or more light-emitting elements (LEEs) disposed on a base surface that are configured to emit light, a first optical element having a first surface spaced apart from the LEEs and positioned to receive light from the LEEs, a transparent second optical coupled to the first optical element, and a reflector element adjacent the second optical element arranged to reflect a portion of light output from the second optical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.