Broad-spectrum terbium-containing garnet phosphors and white-light sources incorporating the same
US6596195B2 · kind B2 · utility
45Cited by
7References
80Claims
0Family size
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Key dates
| Filing date | Jun 1, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Oct 10, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A rare earth-activated terbium-containing garnet phosphor is capable of absorbing radiation in the range from near UV to blue and emitting a broad spectrum of visible light in the range from about 490 nm to about 770 nm. The emission of the phosphor under an excitation at 450 nm exhibits a peak in the range of maximum sensitivity of the human eye. A light source combining a UV/blue LED and this phosphor can provide a white light that is on or near the Planckian locus and may be useful for general illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.