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. 07, 2006
Filed:
Jul. 17, 2002
Hiroyuki Hiraiwa, Yokohama, JP;
Shigeru Sakuma, Chigasaki, JP;
Minako Azumi, Kawasaki, JP;
Masaaki Mochida, Yamato, JP;
Hiroyuki Hiraiwa, Yokohama, JP;
Shigeru Sakuma, Chigasaki, JP;
Minako Azumi, Kawasaki, JP;
Masaaki Mochida, Yamato, JP;
Nikon Corporation, Tokyo, JP;
Abstract
An optical member manufacturing method of the present invention has a growth step of growing an ingot of a fluoride crystal, a plane orientation measurement step of measuring two or more crystal plane orientations of the ingot, a cutout step of cutting out an optical material from the ingot along any one of the crystal plane orientations obtained in the plane orientation measurement step, and a machining step of performing predetermined machining processing on the optical material to obtain an optical member.