OPTICAL FILTER AND IMAGE-PICKUP APPARATUS

申请公布号：US2007247543(A1)

申请号：US20070733313

申请日期：2007.04.10

申请公布日期：2007.10.25

申请人：

CANON KABUSHIKI KAISHA

发明人：HOZUMI YASUSHI;NOTO GORO;ITOH ISAMI

分类号：H04N5/225

主分类号：H04N5/225

摘要：An optical filter which can remove dust stuck to the incidence surface of incidence of light and reduce the mounting space. A filter body is adapted to have predetermined transmittivity as well as a piezoelectric characteristic. At least two electrodes are formed on the filter body. A drive voltage is applied between the at least two electrodes to vibrate the filter body.

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