光学材料及びその製造方法並びに水性分散液

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专利权人:

三井金属鉱業株式会社

发明人:

吉田 麻美,鈴岡 健司,八島 勇

申请号：

JP20120239923

公开号：

JP6128799(B2)

申请日:

2012.10.31

申请国别(地区):

日本

年份:

2017

代理人:

摘要：

This optical material has particles containing rare earth phosphate. &ngr;d is 30 to 100 and &Dgr;&thetas;g,F as defined by formula (1) is -0.10 to -0.01, where &ngr;d is the Abbe number of the particles and &thetas;g,F to be the partial dispersion ratio. The rare earth phosphate preferably has a monoclinic crystal structure. The rare earth phosphate is preferably a phosphate of at least one rare earth element selected from La, Ce, Pr, Nd, Pm, Sm, Eu and Gd. &Dgr;&thetas;g,F=&thetas;g,F-（-1.665×10-7&ngr;d 3+5.213×10-5&ngr;d 2-5.656×10-3&ngr;d+0.7278）... (1)

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