Invention Grant
- Patent Title: Optical glass and optical element
- Patent Title (中): 光学玻璃和光学元件
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Application No.: US12928951Application Date: 2010-12-22
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Publication No.: US08399369B2Publication Date: 2013-03-19
- Inventor: Yoshinori Yamamoto
- Applicant: Yoshinori Yamamoto
- Applicant Address: JP Saitama
- Assignee: Sumita Optical Glass, Inc.
- Current Assignee: Sumita Optical Glass, Inc.
- Current Assignee Address: JP Saitama
- Agency: Farjami & Farjami LLP
- Priority: JP2009-296213 20091225
- Main IPC: C03C3/14
- IPC: C03C3/14 ; C03C3/068
Abstract:
An object of the present invention is to provide optical glass having improved glass-devitrification resistance and moldability without causing reduction in refractive index, and also provide an optical element using the optical glass as a raw material. Specifically, the present invention provides an optical glass containing components of, by mol %: B2O3: over 60% through 75%; Bi2O3: 24% to 39%; La2O3: 7% or lower; Gd2O3: 7% or lower; and ZrO2: 7% or lower.
Public/Granted literature
- US20110160032A1 Optical glass and optical element Public/Granted day:2011-06-30
Information query
