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. 03, 2004
Filed:
Nov. 30, 2001
Manabu Oumi, Chiba, JP;
Susumu Ichihara, Chiba, JP;
Takashi Niwa, Chiba, JP;
Kenji Kato, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Nobuyuki Kasama, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Seiko Instruments Inc., Chiba, JP;
Abstract
An apparatus for producing optical aperture is disclosed. A pressing body has a plane covering a tip and at least a part of stoppers. An opaque film formed on the tip. The pressing body is displaced toward the tip for forming an aperture on a point of the tip. According to the apparatus, the amount of displacement of the plate can be controlled excellently by the stopper and can be made very small. Thus, the aperture having a uniform and small size can be produced on the point of the tip easily.