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

Driving device for removing foreign substance such as dust and image pickup apparatus
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.
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