Fluorophosphate glass and method for producing the same and near-infrared absorbing filter

To provide a fluorophosphates glass having a weather-resistant property and having an O2−/P5+ ratio even after production, which is set so that Cu2+ can be added with a quantity of such a degree suppressing an absorption of a visible light while absorbing a near-infrared light, and a method for prod...

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Bibliographische Detailangaben
Hauptverfasser:	Ikenishi Mikio, Tanno Yoshitake
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF GLASS HEATING JOINING GLASS TO GLASS OR OTHER MATERIALS LIGHTING MECHANICAL ENGINEERING METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS WEAPONS
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Beschreibung
Zusammenfassung:	To provide a fluorophosphates glass having a weather-resistant property and having an O2−/P5+ ratio even after production, which is set so that Cu2+ can be added with a quantity of such a degree suppressing an absorption of a visible light while absorbing a near-infrared light, and a method for producing the same, and a near-infrared light absorbing filter, wherein a molar ratio of a content of O2− with respect to a content of P5+ (O2−/P5+) in the fluorophosphates glass, is 3.2 or more and less than 3.4, and a molar ratio of a content of F− with respect to a total content of O2− and F− (F−/(O2−+F−)) in the fluorophosphates glass is 0.05 or more and 0.25 or less.