Title:
フツリン酸塩ガラス、プレス成型用ガラス素材、光学素子それぞれの製造方法。
Document Type and Number:
Japanese Patent JP5660846
Kind Code:
B2
Abstract:
In order to produce a fluorophosphate glass including P5+ at a small content on the composition thereof, the composition is adjusted so as to provide well-balanced chemical durability and thermal stability. In the production of a fluorophosphate glass in which O2−/P5+>3.7, Al3+ content is in a predetermined amount or more and p5+ content is in a predetermined amount or less, a glass raw material is prepared by using an AlF3 in which the content of Al2O3 is limited to the range from 1 to 5% by mass, and the raw material is melted to produce the fluorophosphate glass.
Inventors:
池西 幹男
Application Number:
JP2010231058A
Publication Date:
January 28, 2015
Filing Date:
October 14, 2010
Export Citation:
Assignee:
ＨＯＹＡ株式会社
International Classes:
C03B11/00; C03C3/247; G02B1/00
Attorney, Agent or Firm:
Patent business corporation It burns and is ぎ特許事務所.
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