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:
Mar. 21, 2006
Filed:
Aug. 12, 2002
Tadayuki Fujimoto, Hachioji, JP;
Kishio Sugawara, Hamura, JP;
Shinichiro Hirota, Fuchu, JP;
Hiroyuki Sakai, Tokyo, JP;
Hidemi Tajima, Hamura, JP;
Tadayuki Fujimoto, Hachioji, JP;
Kishio Sugawara, Hamura, JP;
Shinichiro Hirota, Fuchu, JP;
Hiroyuki Sakai, Tokyo, JP;
Hidemi Tajima, Hamura, JP;
Hoya Corporation, Tokyo, JP;
Abstract
In a press molding apparatus for press molding a plurality of glass materials into a plurality of glass optical elements by the use of a pressing mold including upper and lower molds each of which has a plurality of molding surfaces, at least one of the upper and the lower molds is a heat generator within which heat is generated when the heat generator is subjected to a high-frequency induction heating by an induction heating coil. The heat generator having a plurality of shape-processed portions () produced by partially processing a shape of the heat generator in order that a temperature distribution of the heat generator is adjusted. The apparatus simultaneously press forms, into the glass optical elements, the glass materials supplied between the molding surfaces of the upper and the lower molds which are subjected to the high-frequency induction heating.