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:
May. 31, 2005
Filed:
Jan. 04, 2002
Keita Takahashi, Kanagawa, JP;
Moriya Katagiri, Tokyo, JP;
Keita Takahashi, Kanagawa, JP;
Moriya Katagiri, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
An electromagnetic unit is provided for a lens barrel in which a light exposure controlling unit for controlling an amount of light is integrated. The electromagnetic unit is employed as a drive source for driving shutter blades, and a direction of the movement of a plunger in the electromagnetic unit is switched by a shutter lever, and the shutter blades are opened and closed. A coil and the plunger of the electromagnetic unit are disposed in parallel with an optical axis to reduce the space required for the electromagnetic unit, whereby downsizing of the light exposure controlling unit and the lens barrel is achieved.