Production method of curved-surface mold and production method of optical element using this metal mold

A method of easily manufacturing a metal mold able to add an antireflection structure to a lens or the like having a complicated surface shape such as an aspherical lens. The method comprises the steps of forming a silicon dioxide film (SiO2) film ( 2 ) on a curved-surface base substrate ( 1 ) forme...

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Bibliographische Detailangaben
1. Verfasser:	KOBAYASHI SHINJI,YAMAGUCHI ATSUSHI,SUMI SATOSHI,HIGUCHI MASAHIRO,MAENO YOSHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES FOUNDRY MOULDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of easily manufacturing a metal mold able to add an antireflection structure to a lens or the like having a complicated surface shape such as an aspherical lens. The method comprises the steps of forming a silicon dioxide film (SiO2) film ( 2 ) on a curved-surface base substrate ( 1 ) formed in a specified shape, etching the silicon dioxide film (SiO2) film ( 2 ) using a resist mask ( 3 ) to form a specified shaped antireflection structure pattern, bonding a metal used for the metal mold ( 4 ) onto a silicon dioxide film (SiO2) film ( 21 ) on which this antireflection film pattern is formed to transfer the antireflection film pattern onto the metal used for the metal mold ( 4 ), and then re-moving the silicon dioxide film (SiO2) film to form a metal mold ( 4 a) having an antireflection structure on the curved surface.