Title:
OPTICAL GLASS, OPTICAL MEMBER, AND WEARABLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/082616
Kind Code:
A1
Abstract:
Provided is an optical glass that has a high refractive index, is stronger than conventional optical glasses, and has good product properties. The optical glass has a refractive index (nd) of 1.55 or higher. The difference (Tf – Tg) between the fictive temperature (Tf) and the glass transition temperature (Tg) of the optical glass is 0°C or higher. Also provided are an optical member and a wearable device which use the optical glass. The crack-generating load L of this optical glass is preferably 350 mN or higher.
Inventors:
AMMA SHINICHI (JP)
NAGASHIMA TATSUO (JP)
NAGASHIMA TATSUO (JP)
Application Number:
PCT/JP2018/037092
Publication Date:
May 02, 2019
Filing Date:
October 03, 2018
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
C03C3/062; C03C3/097; G02B1/00
Domestic Patent References:
| WO2004110942A1 | 2004-12-23 | |||
| WO2017090645A1 | 2017-06-01 |
Foreign References:
| JP2008297198A | 2008-12-11 | |||
| JP2003104752A | 2003-04-09 | |||
| JP2010105902A | 2010-05-13 | |||
| JP2007302550A | 2007-11-22 | |||
| JP2011108344A | 2011-06-02 |
Other References:
See also references of EP 3702335A4
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, P.C. (JP)
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