Isuzu Glass Company, Ltd.

National Institute of Advanced Industrial Science and Technology

Naoko Kaga

Kohei Kadono

Toshihiko Einishi

Tatsuya Suetsugu

Takashi Tarumi

Norimasa Kominami

Takeshi Ohtani

Hiroaki Yokoi

Minoru Takada

Yoshinobu Matsumura

Kunihiko Tani

Maki Tanigawa

Takeshi Morihara

Kiyoshi Shinohara

The purpose of the present invention is to use chalcogenide glass to produce an infrared transmitting glass that is more suitable for mold-forming than the conventional glasses. Specifically, the invention provides an infrared transmitting glass for mold forming which contains, in molar concentrations, 2-22% of Ge, 6-34% of at least one element selected from the group consisting of Sb and Bi, 1-20% of at least one element selected from the group consisting of Sn and Zn and 58-70% of at least one element chosen from the group comprising S, Se and Te.

Infrared transmitting glass for mold forming

The present invention provides a method of producing a graded refractive index optical element, the method being capable of easily forming a graded refractive index distribution in a desired portion of a glass substrate without the need for a specific treatment atmosphere, and without using a molten salt. More specifically, the present invention provides a method of producing a graded refractive index optical element comprising applying a paste containing a copper compound, an organic resin and an organic solvent to a glass substrate containing an alkali metal component as a glass component, and then performing heat treatment at a temperature below the softening temperature of the glass substrate.

Method for manufacturing optical element of refractive index distribution type

The present invention provides a method of producing an optical element without the need for high vacuum, unlike the thin film deposition methods, and without using a molten salt. More specifically, the invention provides a method of producing an optical element comprising applying a paste containing at least one compound selected from lithium compounds, potassium compounds, rubidium compounds, cesium compounds, silver compounds, and thallium compounds, an organic resin, and an organic solvent to a glass substrate containing an alkali metal component as a glass component and then performing heat treatment at a temperature below the softening temperature of the glass substrate.

Process for producing optical device

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Osaka, Japan

Naoko Kaga