Invention Grant
- Patent Title: Optical glass
- Patent Title (中): 光学玻璃
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Application No.: US11817274Application Date: 2006-02-21
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Publication No.: US08148280B2Publication Date: 2012-04-03
- Inventor: Susumu Uehara
- Applicant: Susumu Uehara
- Applicant Address: JP Sagamihara-shi
- Assignee: Kabushiki Kaisha Ohara
- Current Assignee: Kabushiki Kaisha Ohara
- Current Assignee Address: JP Sagamihara-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2005-054239 20050228
- International Application: PCT/JP2006/303532 WO 20060221
- International Announcement: WO2006/093062 WO 20060908
- Main IPC: C03C3/066
- IPC: C03C3/066
Abstract:
An optical glass of the present invention has optical constants of a refractive index (nd) within a range from 1.75 to 1.85 and an Abbe number (νd) within a range from 35 to 45, comprises SiO2 and B2O3 as essential components and one or more components selected from the group consisting of ZrO2, Nb2O5, Ta2O5 and WO3, has a glass transition temperature (Tg) of 580° C. or below and has weathering resistance (surface method) of Class 1 or Class 2.
Public/Granted literature
- US20090062101A1 OPTICAL GLASS Public/Granted day:2009-03-05
Information query
