System and method for selected pump LEDs with multiple phosphors
US11611023B2 · kind B2 · utility
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Key dates
| Filing date | Jun 29, 2020 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Jun 29, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An LED pump light with multiple phosphors is described. LEDs emitting radiation at violet and/or ultraviolet wavelengths are used to pump phosphor materials that emit other colors. The LEDs operating in different wavelength ranges are arranged to reduce light re-absorption and improve light output efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.