GeO2-BASED INFRARED TRANSMISSIVE GLASS

PROBLEM TO BE SOLVED: To provide a GeO-based infrared transmissive glass that gives abundant variations of glass materials to be selected for designing an optical lens for infrared rays.SOLUTION: The glass is configured to have a composition of components including, by mol%, 25 to 64% of GeO; 8 to 4...

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Bibliographic Details
Main Authors SAWANOBORI SHIGETO, WATANABE TAKASHI
Format Patent
LanguageEnglish
Published 29.05.2014
Subjects
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS
CHEMISTRY
GLASS
JOINING GLASS TO GLASS OR OTHER MATERIALS
METALLURGY
MINERAL OR SLAG WOOL
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS
SURFACE TREATMENT OF GLASS
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Summary:PROBLEM TO BE SOLVED: To provide a GeO-based infrared transmissive glass that gives abundant variations of glass materials to be selected for designing an optical lens for infrared rays.SOLUTION: The glass is configured to have a composition of components including, by mol%, 25 to 64% of GeO; 8 to 45% of one or more fluorides selected from LiF, NaF, KF, MgF, CaF, SrF, BaF, ZnF, AlF, YF, LaFand GdF; and 15 to 60% of one or more oxides selected from LiO, NaO, KO, MgO, CaO, SrO, BaO, ZnO, YO, LaO, GdO, GaO, ZrOand TaO; and to satisfy demands for a refractive index nd of 1.68 to 1.81 and an Abbe number d of 38 to 47.
Bibliography:Application Number: JP20120249251