Title:
FLUORITE
Document Type and Number:
WIPO Patent Application WO/2012/011372
Kind Code:
A1
Abstract:
Disclosed is a fluorite with even greater laser durability than conventional fluorites. Specifically disclosed is a fluorite with a standard deviation for the area of a Voronoi region in a diagram wherein the etch pit distribution of a surface (111) is Voronoi-segmented is 6,000µm2 or less, or the standard deviation of the distance of a Delaunay side in a diagram wherein the etch pit distribution of a surface (111) is Delaunay-segmented is 80 µm or less.
Inventors:
YAMAZAKI, Takafumi (1013-1, Azauehara, Ohazaageoshimo, Ageo-Cit, Saitama 25, 〒3620025, JP)
山崎 貴史 (〒25 埼玉県上尾市大字上尾下字上原１０１３－１ 日本結晶光学株式会社 上尾工場内 Saitama, 〒3620025, JP)
山崎 貴史 (〒25 埼玉県上尾市大字上尾下字上原１０１３－１ 日本結晶光学株式会社 上尾工場内 Saitama, 〒3620025, JP)
Application Number:
JP2011/065025
Publication Date:
January 26, 2012
Filing Date:
June 30, 2011
Export Citation:
Assignee:
Nihon Kessho Kogaku Co.,Ltd. (810-5, Nobe-cho Tatebayashi-Cit, Gunma 47, 〒3740047, JP)
日本結晶光学株式会社 (〒47 群馬県館林市野辺町８１０－５ Gunma, 〒3740047, JP)
YAMAZAKI, Takafumi (1013-1, Azauehara, Ohazaageoshimo, Ageo-Cit, Saitama 25, 〒3620025, JP)
日本結晶光学株式会社 (〒47 群馬県館林市野辺町８１０－５ Gunma, 〒3740047, JP)
YAMAZAKI, Takafumi (1013-1, Azauehara, Ohazaageoshimo, Ageo-Cit, Saitama 25, 〒3620025, JP)
International Classes:
C30B29/12; C01F11/22; G02B1/02; H01L21/027
Attorney, Agent or Firm:
TAKEUCHI, ICHIZAWA & ASSOCIATES (6F. Akasaka 2-chome Annex, 19-8 Akasaka 2-chome, Minato-k, Tokyo 52, 〒1070052, JP)
Claims: