Driving device and optical apparatus

Details Driving device and optical apparatus Driving device and optical apparatus

2011-07-26

2011-07-26

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

With support

C310S328000

Reexamination Certificate

active

07986477

ABSTRACT:
A driving device is provided and includes: an actuator that includes a driving shaft attached to a piezoelectric element; and a driving signal control unit. The piezoelectric element is expanded and contracted in response to a driving signal. The driving shaft is reciprocated by the expansion and contraction operation of the piezoelectric element to move a driven member that is frictionally engaged with the driving shaft. The driving signal control unit outputs to the piezoelectric element a second driving signal that increases a driving force applied to the driven member and reduces the movement speed of the driven member during a period from the start of the expansion and contraction operation of the piezoelectric element to a predetermined time, as compared to a first driving signal output when the driven member is moved after the period has elapsed.

REFERENCES:
patent: 5917267 (1999-06-01), Miyazawa et al.
patent: 6483226 (2002-11-01), Okada
patent: 2006/0082253 (2006-04-01), Hara
patent: 9-191676 (1997-07-01), None
patent: 11-155292 (1999-06-01), None
patent: 11-318091 (1999-11-01), None
patent: 2006-11563 (2006-04-01), None

Affiliated with

Also associated with

Rating

Driving device and optical apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Driving device and optical apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving device and optical apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2701343