Title:
GLASS, OPTICAL GLASS, GLASS RAW MATERIAL FOR PRESS MOLDING, AND OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2013/191271
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide glass having excellent transmittance, an optical glass, a glass raw material for press molding, and an optical element. [Solution] A glass including at least one type of oxide selected from TiO2, Nb2O5, WO3, and Bi2O3 as a glass component therefor, having a total TiO2, Nb2O5, WO3, and Bi2O3 content of at least 20 mol%, and having a βOH value indicated in formula (1) that fulfills the relationship indicated in formula (2). βOH = - [1n(B/A)]/t … (1); βOH ≥ 0.4891 × 1 n (1/HR) + 2.48 … (2).
Inventors:
MIKAMI SHUHEI
FUJIWARA YASUHIRO
FUJIWARA YASUHIRO
Application Number:
PCT/JP2013/067051
Publication Date:
December 27, 2013
Filing Date:
June 21, 2013
Export Citation:
Assignee:
HOYA CORP (JP)
MIKAMI SHUHEI
FUJIWARA YASUHIRO
MIKAMI SHUHEI
FUJIWARA YASUHIRO
International Classes:
C03C3/062; C03C3/064; C03C3/066; C03C3/12; C03C3/16; C03C3/17; C03C3/19; C03C3/21; C03C3/253; G02B1/00
Foreign References:
| JP2010057893A | 2010-03-18 | |||
| JP2011046550A | 2011-03-10 | |||
| JP2011042556A | 2011-03-03 |
Attorney, Agent or Firm:
MAEDA & SUZUKI (JP)
Maeda and a Suzuki international patent business corporation (JP)
Maeda and a Suzuki international patent business corporation (JP)
Download PDF: