Title:
CERAMIC PHOSPHOR PLATE
Document Type and Number:
Japanese Patent JP2023098603
Kind Code:
A
Abstract:
To provide a ceramic phosphor plate with improved extraction efficiency.SOLUTION: A ceramic phosphor plate is composed of a ceramic substrate having a light incident surface and a light emission surface facing the light incident surface, and an antireflection film formed at least on the light emission surface. The light emission surface of the ceramic substrate has an uneven shape consisting of concave parts and convex parts, an arithmetic mean roughness (Ra) is 0.1 μm or more and 0.7 μm or less, and a kurtosis (Rku) obtained from a surface roughness curve is 5 or more and 10 or less.SELECTED DRAWING: None
Inventors:
KIMURA KOSUKE
IRIE MASAKI
IRIE MASAKI
Application Number:
JP2022167471A
Publication Date:
July 10, 2023
Filing Date:
October 19, 2022
Export Citation:
Assignee:
COORSTEK KK
International Classes:
F21V9/30; G02B5/20; G02B1/113; H01L33/50
Attorney, Agent or Firm:
Shigeru Kinoshita
Yuko Sawada
Yuko Sawada
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