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    VIBRATION-TYPE ACTUATOR, ELECTRONIC DEVICE, AND OPTICAL DEVICE
    5.
    发明公开
    VIBRATION-TYPE ACTUATOR, ELECTRONIC DEVICE, AND OPTICAL DEVICE 审中-公开

    公开(公告)号：EP4280853A1

    公开(公告)日：2023-11-22

    申请号：EP23174108.3

    申请日：2023-05-17

    申请人： CANON KABUSHIKI KAISHA

    发明人： UEBAYASHI, Akira ,  WATANABE, Takayuki ,  ODA, Yuki

    IPC分类号： H10N30/00 ,  H10N30/30 ,  H10N30/80 ,  H10N30/853

    摘要： A vibration-type actuator includes a vibration body including an electric-mechanical energy conversion element with a lead content of 1000 ppm or less, and an elastic body having a plate portion and protrusions protruding in a direction intersecting with a main surface of the plate portion, and a contact body in contact with the protrusions. The vibration body and the contact body are relatively moved by vibration of the vibration body. The vibration-type actuator further comprises a pressure member pressing the vibration body against the contact body and a foamed member arranged between the pressure member and the vibration body. The foamed member contains, as a main skeleton, a siloxane bond including silicon and oxygen, and an average equivalent circle diameter of bubbles contained in the foamed member is greater than 120 µm.