Title:
OSCILLATION ACTUATOR AND LENS BARREL USING THE SAME
Document Type and Number:
Japanese Patent JP2016033572
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lens barrel that enables a structure with a contact pressure force unchanged even if an external impact or the like is applied in a direct-acting type oscillation actuator, and can obtain a stable drive characteristic.SOLUTION: A lens barrel comprises: a lens guide shaft that movably supports a lens frame; a main body frame that holds the lens guide shaft; a slider that comes into contact with a drive shaft; an oscillator that is fixed to any one of the drive shaft or the slider; a drive guide shaft that supports the slider movably in parallel with the drive shaft; a drive case that holds the drive shaft and the drive guide shaft; an output shaft that is rotatable centering around a shaft almost in parallel with the drive guide shaft, and is supported movably in a shaft direction integrally with the slider; a pressure spring that presses the output shaft against the lens frame; and a connection part of the output shaft and the lens frame that transmits a drive force in an optical axis to the lens frame, and is slidable toward a direction almost orthogonal to a pressure direction in a direction orthogonal to the lens guide shaft.SELECTED DRAWING: Figure 1
Inventors:
NAKAJIMA SHIGEO
Application Number:
JP2014155987A
Publication Date:
March 10, 2016
Filing Date:
July 31, 2014
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/04
Attorney, Agent or Firm:
Yukio Takanashi