Optical glass

A high refractive, low dispersive optical glass composition based on a B2O3-La2O3-Y2O3-TiO2 quaternary system which is free of thorium oxide. The glass made of the composition has a refractive index of 1.79 to 1.93 and an Abbe number of 30 to 41.

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Bibliographische Detailangaben
Hauptverfasser:	ISHIBASHI, KAZUFUMI, ICHIMURA, TAKEO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A high refractive, low dispersive optical glass composition based on a B2O3-La2O3-Y2O3-TiO2 quaternary system which is free of thorium oxide. The glass made of the composition has a refractive index of 1.79 to 1.93 and an Abbe number of 30 to 41.