Invention Grant
US08482182B2 Driving apparatus, optical apparatus, and driving signal control circuit
有权
驱动装置,光学装置和驱动信号控制电路
- Patent Title: Driving apparatus, optical apparatus, and driving signal control circuit
- Patent Title (中): 驱动装置,光学装置和驱动信号控制电路
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Application No.: US12754271Application Date: 2010-04-05
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Publication No.: US08482182B2Publication Date: 2013-07-09
- Inventor: Hisao Ito , Hideo Yoshida , Takezo Nagamitsu , Tetsuya Tokoro , Yukihiko Sigeoka
- Applicant: Hisao Ito , Hideo Yoshida , Takezo Nagamitsu , Tetsuya Tokoro , Yukihiko Sigeoka
- Applicant Address: JP Tokyo JP Gunma JP Moriguchi-Shi
- Assignee: FUJIFILM Corporation,Sanyo Semiconductor Co., Ltd.,Sanyo Electric Co., Ltd.
- Current Assignee: FUJIFILM Corporation,Sanyo Semiconductor Co., Ltd.,Sanyo Electric Co., Ltd.
- Current Assignee Address: JP Tokyo JP Gunma JP Moriguchi-Shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPP2009-106485 20090424
- Main IPC: H01L41/00
- IPC: H01L41/00

Abstract:
A driving apparatus includes a piezoelectric element which undergoes expansion/contraction motion by a driving signal; a driving shaft which is mounted on the piezoelectric element, and undergoes reciprocating movement according to the expansion/contraction motion of the piezoelectric element; a first movement member which is friction-engaged with the driving shaft, and moves due to the reciprocating movement of the driving shaft; and a first control portion which applies driving signals to the piezoelectric element; the first control portion applies driving control pulse signals when the first movement member is to be moved, and applies stop control pulse signals when the stopped first movement member is not to be moved to put the first movement member into a vibration-arrested state. By this means, the stopped first movement member can be smoothly moved, and the first movement member in motion can be smoothly stopped.
Public/Granted literature
- US20100270954A1 DRIVING APPARATUS, OPTICAL APPARATUS, AND DRIVING SIGNAL CONTROL CIRCUIT Public/Granted day:2010-10-28
Information query
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