National Institute of Advanced Industrial Science and Technology

Nihon Yamamura Glass Co., Ltd.

Takuro Ikeda

Junji Nishii

Hidekazu Hashima

Naoyuki Kitamura

Tatsuo Hidaka

Junichi Nakamura

Kohei Fukumi

An optical glass having a high refractive index (particularly preferably a refractive index of 1.6 or more), low dispersion (an Abbe number of 45 or more), a low deformation point, and improved resistance to devitrification upon molding, and suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure is provided. The optical glass contains 1.0-4.5 wt. % SiO, 30.5-50.0 wt. % BO, 1.1-8.0 wt. % LiO, 10.1-19.5 wt. % BaO, 15.5-30.0 wt. % ZnO, 3.0-15.0 wt. % YO, and 10.0-19.5 wt. % LaO.

Optical glass

Growing community of inventors

Hyogo, Japan

Takuro Ikeda