The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2009
Filed:
Feb. 15, 2005
Tatsuya Suetsugu, Osaka, JP;
Norimasa Kominami, Osaka, JP;
Takeshi Ohtani, Osaka, JP;
Naoko Kaga, Osaka, JP;
Hiroaki Yokoi, Osaka, JP;
Minoru Takada, Osaka, JP;
Takashi Tarumi, Osaka, JP;
Toshihiko Einishi, Osaka, JP;
Kohei Kadono, Ikeda, JP;
Tatsuya Suetsugu, Osaka, JP;
Norimasa Kominami, Osaka, JP;
Takeshi Ohtani, Osaka, JP;
Naoko Kaga, Osaka, JP;
Hiroaki Yokoi, Osaka, JP;
Minoru Takada, Osaka, JP;
Takashi Tarumi, Osaka, JP;
Toshihiko Einishi, Osaka, JP;
Kohei Kadono, Ikeda, JP;
Isuzu Glass Co., Ltd., Osaka, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
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.