Invention Grant
- Patent Title: Optical glass and use thereof
- Patent Title (中): 光学玻璃及其用途
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Application No.: US14381771Application Date: 2013-02-25
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Publication No.: US09302930B2Publication Date: 2016-04-05
- Inventor: Tomoaki Negishi , Toshiyuki Nishikawa
- Applicant: Tomoaki Negishi , Toshiyuki Nishikawa
- Applicant Address: JP Tokyo
- Assignee: HOYA CORPORATION
- Current Assignee: HOYA CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2012-041736 20120228
- International Application: PCT/JP2013/054733 WO 20130225
- International Announcement: WO2013/129302 WO 20130906
- Main IPC: C03C3/068
- IPC: C03C3/068 ; C03B11/00 ; C03B11/08 ; G02B1/02 ; G02B3/00 ; C03B40/02 ; C03B5/43 ; C03B17/04 ; C03B17/06
Abstract:
An aspect of the present invention relates to optical glass, which is oxide glass, having a refractive index nd ranging from 1.95 to 2.50 and an Abbé number νd ranging from 18 to 40, including essential components in the form of Si4+, B3+, La3+, Ti4+, Nb5+, and at least one from among Gd3+, Y3+, and Yb3+, including, denoted as cation %, 1 to 30% of Si4+, 1 to 50% of B3+, wherein a total of Si4+ and B3+ ranges from 5 to 55%, a total of 11 to 70% of La3+, Gd3+, Y3+, and Yb3+, with 10 to 50% of La3+, a total of 23 to 70% of Ti4+, Nb5+, Ta5+, and W6+, with equal to or greater than 1% of Nb5+ and greater than 22% of Ti4+.
Public/Granted literature
- US20150045204A1 OPTICAL GLASS AND USE THEREOF Public/Granted day:2015-02-12
Information query
