Invention Grant
- Patent Title: Ultrasonic motor and lens driving apparatus
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Application No.: US15615724Application Date: 2017-06-06
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Publication No.: US10972019B2Publication Date: 2021-04-06
- Inventor: Ryo Yamasaki , Makoto Oikawa
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JPJP2012-017136 20120130
- Main IPC: H02N2/10
- IPC: H02N2/10 ; H02N2/00 ; G02B7/04

Abstract:
An ultrasonic motor includes a vibrator configured to generate a vibration, a relatively movable member configured to be movable by the vibrator, wherein the relatively movable member is movable relatively according to the vibration of the vibrator, a holding unit configured to hold the vibrator, wherein the holding unit includes a first holding member configured to hold the vibrator and a second holding member; and a damping member provided between the vibrator and the second holding member and configured to reduce a vibration transmitted to the second holding member, a pressure unit configured to press the vibrator against the relatively movable member, wherein the second holding member is configured to press the vibrator against the relatively movable member, and wherein the first holding member is made of a material having a higher damping capability against the vibrator than a material of the second holding member.
Public/Granted literature
- US20170272007A1 ULTRASONIC MOTOR AND LENS DRIVING APPARATUS Public/Granted day:2017-09-21
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