Lighting device with plural fluorescent materials
US9711686B2 · kind B2 · utility
8Cited by
0References
8Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 22, 2016 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Mar 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8511
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is a light-emitting device that has a high emission efficiency, excellent stability and temperature properties, and that generates light having a high color rendering property sufficient for practical use. This semiconductor light-emitting device comprises a semiconductor light-emitting element that emits blue light, a green phosphor that absorbs the blue light and emits green light, and an orange phosphor that absorbs the blue light and emits orange light, and is characterized in that the orange phosphor is an Eu-activated α-SiAlON phosphor having an emission spectrum peak wavelength within a range of 595 to 620 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.