US 7,320,231 B2
Method of making a molding die
Shigeru Hosoe, Hachioji (Japan)
Assigned to Konica Corporation, Tokyo (Japan)
Filed on Apr. 20, 2004, as Appl. No. 10/829,020.
Application 10/829020 is a division of application No. 10/079498, filed on Feb. 22, 2002, abandoned.
Claims priority of application No. 2001-054182 (JP), filed on Feb. 28, 2001; application No. 2001-054183 (JP), filed on Feb. 28, 2001; application No. 2001-299657 (JP), filed on Sep. 28, 2001; and application No. 2001-299664 (JP), filed on Sep. 28, 2001.
Prior Publication US 2004/0194510 A1, Oct. 07, 2004
This patent is subject to a terminal disclaimer.
Int. Cl. C03B 9/48 (2006.01); B29D 11/00 (2006.01)
U.S. Cl. 65—374.12  [249/135; 428/808] 13 Claims
OG exemplary drawing
 
1. A method of producing a molding die for molding an optical element, comprising:
shaping an amorphous alloy having a super-cooled liquid phase to form a die base body; and
forming a die face onto a part of the die base body,
wherein the die face corresponds to an optical surface of the optical element or the die face corresponds to a dimensional reference surface, and
wherein the forming step includes grinding the part of the die base body to form the die face.