Light-emitting device
US9608176B2 · kind B2 · utility
0Cited by
0References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2012 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Nov 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A light-emitting device is specified, said device comprising: a light-emitting semiconductor element (23) which emits greenish white light (10) during operation of the device, a filter element (4) which has a higher optical transmittance (11) in a spectral region of red light than in a spectral region of blue and green light, wherein the filter element (4) is arranged in such a way with respect to the light-emitting semiconductor element (23) that solely filtered light (12) which passes through the filter element (4) is emitted by the device during operation of the device, and the filtered light (12) is warm-white light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.