METHOD FOR MANUFACTURING OPTICAL ELEMENT OF REFRACTIVE INDEX DISTRIBUTION TYPE

The present invention provides a method of producing a graded refractive index optical element, the method being capable of easily forming a graded refractive index distribution in a desired portion of a glass substrate without the need for a specific treatment atmosphere, and without using a molten...

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Bibliographische Detailangaben
Hauptverfasser: EINISHI, TOSHIHIKO, KOMINAMI, NORIMASA, TAKADA, MINORU, KAGA, NAOKO, OHTANI, TAKESHI, YOKOI, HIROAKI, SUETSUGU, TATSUYA, TARUMI, TAKASHI, KADONO, KOHEI
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The present invention provides a method of producing a graded refractive index optical element, the method being capable of easily forming a graded refractive index distribution in a desired portion of a glass substrate without the need for a specific treatment atmosphere, and without using a molten salt. More specifically, the present invention provides a method of producing a graded refractive index optical element comprising applying a paste containing a copper compound, an organic resin and an organic solvent to a glass substrate containing an alkali metal component as a glass component, and then performing heat treatment at a temperature below the softening temperature of the glass substrate.