Invention Grant
- Patent Title: Optical glass, optical member, and optical device
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Application No.: US16876523Application Date: 2020-05-18
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Publication No.: US11852815B2Publication Date: 2023-12-26
- Inventor: Shinichi Amma , Tatsuo Nagashima
- Applicant: AGC INC.
- Applicant Address: JP Tokyo
- Assignee: AGC INC.
- Current Assignee: AGC INC.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP 17223586 2017.11.21
- Main IPC: G02B27/01
- IPC: G02B27/01 ; G02C7/10

Abstract:
The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*≥4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*/|a*|≥0.55 under A light source in a CIELab representation, and satisfying b*≥0.1.
Public/Granted literature
- US20200278483A1 OPTICAL GLASS, OPTICAL MEMBER, AND OPTICAL DEVICE Public/Granted day:2020-09-03
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