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:
Feb. 25, 2014
Filed:
Dec. 01, 2005
Tomoyuki Morimoto, Hachioji, JP;
Shigeru Hosoe, Hachioji, JP;
Hiroyuki Matsuda, Sagamihara, JP;
Toshiyuki Imai, Hachioji, JP;
Tomoyuki Morimoto, Hachioji, JP;
Shigeru Hosoe, Hachioji, JP;
Hiroyuki Matsuda, Sagamihara, JP;
Toshiyuki Imai, Hachioji, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
A machining method of machining a transfer optical surface on a optical element producing die having the transfer optical surface made of a material having Vickers hardness of Hv1500 or more, comprising: machining the transfer optical surface on the optical element producing die by cutting with a cutting tool, wherein a rake face of a tip of a blade of the cutting tool is set with an angle of minus values at an incising point on a surface to be machined.