OPTICAL GLASS, OPTICAL ELEMENT FORMED OF OPTICAL GLASS, AND OPTICAL DEVICE

Title:

OPTICAL GLASS, OPTICAL ELEMENT FORMED OF OPTICAL GLASS, AND OPTICAL DEVICE

Document Type and Number:

WIPO Patent Application WO/2018/037797

Kind Code:

A1

Abstract:

Provided is an optical glass which contains, in mol% of cations, 10-60% of an La3+ component, more than 0% but 75% or less of a Ga3+ component and 0-75% of an Nb5+ component, with the total of the La3+ component, the Ga3+ component and the Nb5+ component being 60-100%.

Inventors:

INOUE HIROYUKI (JP)
MASUNO ATSUNOBU (JP)
YOSHIMOTO KOHEI (JP)
UEDA MOTOI (JP)
YAMAMOTO HIROSHI (JP)
KAWASHIMA TATSUNORI (JP)

Application Number:

PCT/JP2017/026520

Publication Date:

March 01, 2018

Filing Date:

July 21, 2017

Export Citation:

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Assignee:

UNIV TOKYO (JP)
NIKON CORP (JP)

International Classes:

C03C3/15; C03C3/068; C03C3/155; C03C3/253; G02B1/00

Foreign References:

US5232879A	1993-08-03
US5392376A	1995-02-21

Other References:

SCHROEDER, J ET AL.: "Raman scattering and Boson peaks in glasses: temperature and pressure effects", JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 349, 28 October 2004 (2004-10-28), pages 88 - 97, XP004653342
TAKAHASHI, Y ET AL.: "Formation of Langasite- Type Crystals in Corresponding Glasses and Their Second-Order Optical Nonlinearities", JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, vol. 112, no. 1301, 23 January 2004 (2004-01-23), pages 61 - 64, XP055465831
ASAKURA SHOTEN: "3.1. Kogaku Sekkei to Kogaku Glass", GLASS HANDBOOK, 30 September 1975 (1975-09-30), pages 71 - 73, XP009518637
See also references of EP 3505499A4