Invention Grant
US07868942B2 Driving device for removing foreign substance such as dust and image pickup apparatus
有权
用于除去灰尘和图像拾取装置等异物的驱动装置
- Patent Title: Driving device for removing foreign substance such as dust and image pickup apparatus
- Patent Title (中): 用于除去灰尘和图像拾取装置等异物的驱动装置
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Application No.: US12146250Application Date: 2008-06-25
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Publication No.: US07868942B2Publication Date: 2011-01-11
- Inventor: Toshifumi Urakami
- Applicant: Toshifumi Urakami
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. I.P. Division
- Priority: JP2007-179740 20070709
- Main IPC: H04N5/225
- IPC: H04N5/225

Abstract:
A driving device and an image pickup apparatus including the driving device capable of reliably detecting a vibration state of a vibrated member even when a piezoelectric element including as a control circuit an H-bridge circuit which contributes miniaturization of the circuit is employed are provided. In this driving device, a single piezoelectric member including a first driving electrode and a vibration detection electrode on a first side and a second driving electrode and a ground electrode on a second side is attached to an optical low-pass filter serving as the vibrated member so as to vibrate the optical low-pass filter. Furthermore, the vibration detection electrode is used to detect the vibration status of the optical low-pass filter.
Public/Granted literature
- US20090015705A1 DRIVING DEVICE FOR REMOVING FOREIGN SUBSTANCE SUCH AS DUST AND IMAGE PICKUP APPARATUS Public/Granted day:2009-01-15
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