Title:
OPTICAL GLASS, OPTICAL ELEMENT, AND OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/110304
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a low-cost optical glass that has a high refractive index, low dispersion, and good transmittance. Provided is an optical glass characterized by containing, in mass percent, 5-9% of SiO2, 12-15% of B2O3, 50-54% of La2O3, 1-9% of Gd2O3, 4-8% of Nb2O5, 3-8% of TiO2, 0.5-4% of WO3, 3-7% of ZrO2, and by substantially not containing ZnO.
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Inventors:
IGUCHI NORIAKI (JP)
Application Number:
PCT/JP2016/083707
Publication Date:
June 29, 2017
Filing Date:
November 14, 2016
Export Citation:
Assignee:
HIKARI GLASS CO LTD (JP)
International Classes:
C03C3/068; G02B1/00
Foreign References:
| JP2014221704A | 2014-11-27 | |||
| JPS6046948A | 1985-03-14 | |||
| JP2015040171A | 2015-03-02 | |||
| JP2015044724A | 2015-03-12 |
Attorney, Agent or Firm:
SHOYO INTELLECTUAL PROPERTY FIRM (JP)
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