LEAD-FREE OPTICAL GLASSES

LEAD-FREE OPTICAL GLASSES HAVE REFRACTIVE INDICES ND OF BETWEEN 1.50 AND 1.56, ABBE NUMBERS VD OF BETWEEN 50 AND 64 AND HAVE THE FOLLOWING COMPOSITION (IN % BY WEIGHT, BASED ON OXIDE): SIO2 62-75; B2O3 5- 9.5; BAO 4.5-21; ZNO 0-16; CAO 0-0.5 (WHERE ZNO + CAO _ 0.05; BAO +ZNO + CAO _ 25); TIO2 1-7; N...

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Bibliographische Detailangaben
Hauptverfasser:	MAGDALENA WINKLER-TRUDEWIG, UWE KOLBERG, ALWIN WEITZEL, MONIKA GIERKE
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:	LEAD-FREE OPTICAL GLASSES HAVE REFRACTIVE INDICES ND OF BETWEEN 1.50 AND 1.56, ABBE NUMBERS VD OF BETWEEN 50 AND 64 AND HAVE THE FOLLOWING COMPOSITION (IN % BY WEIGHT, BASED ON OXIDE): SIO2 62-75; B2O3 5- 9.5; BAO 4.5-21; ZNO 0-16; CAO 0-0.5 (WHERE ZNO + CAO _ 0.05; BAO +ZNO + CAO _ 25); TIO2 1-7; NA2O 2-10; K2O 4.5-8; ZRO2 0-1; NB2O5 0-1; TA2O5 0-1; F- 0-0.5. THE COMPOSITION MAY INCLUDE 0-0.5% SB2O3 AND MAY BE FREE OF ARSENIC OXIDE.