Patent ID: 11897814
Assignee: NICHIA CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A rare earth aluminate sintered compact comprising a plurality of rare earth aluminate phosphor crystalline phases and a plurality of voids, wherein
an absolute maximum length of 90% or more by number of the rare earth aluminate phosphor crystalline phases is in a range from 0.4 μm to 1.3 μm, and
an absolute maximum length of 90% or more by number of the voids is in a range from 0.1 μm to 1.2 μm,, wherein a distance between two farthest points on a contour of one of the rare earth aluminate phosphor crystalline phases or the voids included in a measurement range on a surface or cross section of the rare earth aluminate sintered compact is defined as the absolute maximum length of the one of the rare earth aluminate phosphor crystalline phases or the voids.