Invention Grant
- Patent Title: Optical glass, press-molding glass material, optical element and method of manufacturing the same, and bonded optical element
- Patent Title (中): 光学玻璃，压制玻璃材料，光学元件及其制造方法和粘合光学元件
-
Application No.: US13650724Application Date: 2012-10-12
-
Publication No.: US08852745B2Publication Date: 2014-10-07
- Inventor: Kosuke Yamaguchi , Naomi Matsumoto
- Applicant: Hoya Corporation
- Applicant Address: JP Tokyo
- Assignee: Hoya Corporation
- Current Assignee: Hoya Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Main IPC: B32B17/06
- IPC: B32B17/06 ; C03B11/00 ; C03C3/062 ; C03C3/064
Abstract:
An aspect of the present invention relates to an optical glass, which comprises, denoted as weight percent, 2 to 37 percent of SiO2, 0 to 25 percent of B2O3, 0 to 10 percent of GeO2, 18 to 55 percent of a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO, and 27 to 55 percent of a combined content of TiO2, Nb2O5, and WO3, wherein the weight ratio of SiO2 content relative to a combined content of SiO2 and B2O3 ranges from 0.1 to 1, a weight ratio of the Li2O content to a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO ranges from 0 to 0.4, and a weight ratio of TiO2 content relative to a combined content of TiO2, Nb2O5, and WO3 ranges from 0.35 to 1, with a refractive index nd of 1.860 to 1.990 and an Abbé number νd of 21 to 29.
Public/Granted literature
Information query
