WAVELENGTH CONVERSION MEMBER
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United States of America Patent
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Issued Date -
Sep 8, 2022
app pub date -
Aug 7, 2020
filing date -
Aug 9, 2019
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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.
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