Position detection device, drive device, and lens barrel

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United States of America Patent

PATENT NO 9541369
APP PUB NO 20140132251A1
SERIAL NO

14158086

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Abstract

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A position detection device includes a detection portion and a magnetism generation portion. The detection portion includes a first magnetism detection element and a second magnetism detection element. The first magnetism detection element and the second magnetism detection element are disposed on a plane. The magnetism generation portion is disposed at a position opposite the detection portion. The magnetism generation portion includes mutually opposing magnetic fluxes with respect to the detection portion by performing bipolar magnetization on a face opposite the plane where the first magnetism detection element and the second magnetism detection element are disposed.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD1-61 SHIROMI 2-CHOME CHUO-KU OSAKA-SHI OSAKA 540-6207

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Enomoto, Tatsuhiro Nara, JP 2 5
Miyamori, Kenichi Hyogo, JP 20 156
Umeda, Makoto Osaka, JP 21 425

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