Wavelength conversion member
US12365837B2 · kind B2 · utility
0Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2020 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Nov 13, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavelength conversion member includes a sintered body of a phosphor. An average diameter of pores in an arbitrary cross section falls within a range of not less than 0.28 μm and not more than 0.98 μm. A ratio of an area of pores to a whole area in an arbitrary cross section falls within a range of not less than 0.04% and not more than 2.7%. An average diameter of grains of the phosphor in an arbitrary cross section falls within a range of not less than 1 μm and not more than 3 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.