Near infrared cutoff filter glass

A near infrared cutoff filter glass, which comprises, as represented by cation percentage: P5+ 30 to 50%, Al3+ 5 to 20%, R+ 20 to 40% (wherein R+ is the total amount of Li++Na++K+), R′2+ 5 to 30% (wherein R′2+ is the total amount of Mg2++Ca2++Sr2++Ba2++Zn2+), Cu2+ 3 to 15% and comprises, as represen...

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Bibliographische Detailangaben
1. Verfasser:	Shiratori, Makoto
Format:	Patent
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	A near infrared cutoff filter glass, which comprises, as represented by cation percentage: P5+ 30 to 50%, Al3+ 5 to 20%, R+ 20 to 40% (wherein R+ is the total amount of Li++Na++K+), R′2+ 5 to 30% (wherein R′2+ is the total amount of Mg2++Ca2++Sr2++Ba2++Zn2+), Cu2+ 3 to 15% and comprises, as represented by anion percentage: O2− 30 to 90% and F− 10 to 70%, wherein (Li++Na++K+)/(P5++Al3+) is from 0.45 to 1.0, and (Sr2++Ba2++Cu2+)/(Al3++Mg2++Ca2+) is from 0.5 to 1.0.