Method for testing glass material, method for evaluating glass material and method for producing optical element

The invention provides a method for testing glass material, a method for evaluating glass material and a method for producing optical element. There is provided a method for testing a glass material and a method for evaluating a glass material capable of preventing a generation of a gap between an e...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TACHIWANA KAZUO, AKOJIMA JUNKO, NAKAMURA JUN, AOYAGI SHIGERU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES JOINING GLASS TO GLASS OR OTHER MATERIALS MEASURING METALLURGY MINERAL OR SLAG WOOL PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TESTING
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Beschreibung
Zusammenfassung:	The invention provides a method for testing glass material, a method for evaluating glass material and a method for producing optical element. There is provided a method for testing a glass material and a method for evaluating a glass material capable of preventing a generation of a gap between an evaluation result and an actual degradation state of the surface of a lens, and also to provide a method for producing an optical element capable of sufficiently exhibiting chemical durability possessed by the optical element, which is the method for testing a glass material, to perform a test regarding a chemical durability of a glass material, comprising examining a correlation between a variation of hydrogen ion concentration indexes of a process liquid in which the glass material is immersed, and a variation of chemical durability index values of a prescribed type of the glass material.