OPTICAL ELEMENT FORMING DIE AND ITS PRODUCTION METHOD

PROBLEM TO BE SOLVED: To provide a production method of an optical element forming die which does not cause minute irregularity on the surface of a film formed on the surface of a preform. SOLUTION: The production method comprises a step of working to form a surface roughness Ra of 5 μm or less on a...

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Bibliographische Detailangaben
1. Verfasser:	SAITO KURATO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL GLASS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a production method of an optical element forming die which does not cause minute irregularity on the surface of a film formed on the surface of a preform. SOLUTION: The production method comprises a step of working to form a surface roughness Ra of 5 μm or less on a spatter face 6 of a target 5 and a step of forming a film 4 on the surface of a preform 2 by a spattering method using the target 5. COPYRIGHT: (C)2008,JPO&INPIT