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US 2020/0264499 A1Published application
Phosphor, wavelength conversion element, light source device, and projector
AssigneeSeiko Epson Corporation
InventorOsamu ARAKAWA
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Abstract
A phosphor according to the present disclosure includes a first crystal phase added with an activator agent, a second crystal phase higher in thermal conductivity than the first crystal phase, and a third crystal phase which is disposed between the first crystal phase and the second crystal phase, and is same in crystal structure as the first crystal phase, and is smaller in additive amount of the activator agent than the first crystal phase.
Claims19
A phosphor comprising:
- a first crystal phase added with an activator agent;
- a second crystal phase higher in thermal conductivity than the first crystal phase;
- and
- a third crystal phase which is disposed between the first crystal phase and the second crystal phase, and is same in crystal structure as the first crystal phase, and is smaller in additive amount of the activator agent than the first crystal phase.
1 more element
Dependencies are inferred from the claim text.