Invention Grant
US09431595B2 Vibration wave driving device, image pickup device, optical apparatus, liquid discharge device, and electronic apparatus
有权
振动波驱动装置，图像拾取装置，光学装置，液体排出装置和电子装置
- Patent Title: Vibration wave driving device, image pickup device, optical apparatus, liquid discharge device, and electronic apparatus
- Patent Title (中): 振动波驱动装置，图像拾取装置，光学装置，液体排出装置和电子装置
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Application No.: US14653803Application Date: 2013-12-16
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Publication No.: US09431595B2Publication Date: 2016-08-30
- Inventor: Tatsuo Furuta , Hiroshi Saito , Shinya Koyama , Akira Uebayashi , Hidenori Tanaka , Takeshi Kawano , Yoshihiko Matsumura
- 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: JP2012-279477 20121221
- International Application: PCT/JP2013/084391 WO 20131216
- International Announcement: WO2014/098244 WO 20140626
- Main IPC: H01L41/04
- IPC: H01L41/04 ; H04N5/217 ; H02N2/00 ; H01L41/18 ; H02N2/10 ; H04N5/225 ; H04N5/335 ; G02B7/10 ; G02B27/00 ; H01L41/187 ; H02N2/16 ; H01L41/09 ; H02N2/14 ; B41J2/14
Abstract:
A vibration wave driving device including a lead-free piezoelectric material that can be driven with high reliability over a wide operating temperature range, an image pickup device including the vibration wave driving device, and an optical apparatus including the vibration wave driving device are provided. The vibration wave driving device generates a vibration wave by applying an AC voltage to a piezoelectric element, and includes the piezoelectric element and a capacitor that satisfy 20[° C.]≦T∈(Cmax)−T∈(Pmax)≦75[° C.] and 0.50≦∈(Cc)/∈(Cmax)≦0.80.
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