Lens driving apparatus, image blur correction apparatus and image pickup apparatus including the same

Patent metadata

Field	Value
Publication number	US-2016109718-A1
Application number	US-201514873463-A
Country	US
Kind code	A1
Filing date	Oct 2, 2015
Priority date	Oct 21, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

Provided is a lens driving apparatus, including: an ultrasonic motor including a drive slider having an output shaft provided so as to project in a direction perpendicular to a driving direction of the drive slider; a lens moving frame configured to hold an optical system, and having a hole into which the output shaft is to be inserted; and a fixed portion configured to support the lens moving frame so that the lens moving frame is movable in a direction perpendicular to an optical axis, hold the ultrasonic motor so that the ultrasonic motor is removable from a side opposite to a side where the lens moving frame is provided, and have a through hole passing through the fixed portion in a direction of the optical axis.

First claim

What is claimed is:

1 . A lens driving apparatus, comprising:
an ultrasonic motor including a drive slider having an output shaft provided so as to project in a direction perpendicular to a driving direction of the drive slider; a lens moving frame configured to hold an optical system, and having a hole into which the output shaft is to be inserted; and a fixed portion configured to support the lens moving frame so that the lens moving frame is movable in a direction perpendicular to an optical axis, hold the ultrasonic motor so that the ultrasonic motor is removable from a side opposite to a side where the lens moving frame is provided, and have a through hole passing through the fixed portion in a direction of the optical axis.

2 . The lens driving apparatus according to claim 1 , wherein the ultrasonic motor is positioned through the through hole when the ultrasonic motor is held by the fixed portion.

3 . The lens driving apparatus according to claim 1 , wherein the hole comprises an elongated hole into which the output shaft is slidably inserted.

4 . The lens driving apparatus according to claim 3 , wherein the through hole has an enlarged through hole formed in one of the driving direction of the drive slider of the ultrasonic motor and a direction perpendicular to the driving direction of the drive slider of the ultrasonic motor.

5 . The lens driving apparatus according to claim 1 , wherein:
the ultrasonic motor includes an oscillator having two projections formed along the driving direction of the drive slider; and the ultrasonic motor has a configuration enabling mounting to the fixed portion after being rotated at 180° with respect to the output shaft.

6 . The lens driving apparatus according to claim 1 , wherein the fixed portion comprises:
a fixed barrel configured to support the lens moving frame so that the lens moving frame is movable within a plane perpendicular to the optical axis; and a motor mounting member fixed to the fixed barrel, including a mounting portion to which the ultrasonic motor is fixed so that the ultrasonic motor is removable from a side that does not face the lens mounting frame, the mounting portion having a through hole passing through the motor mounting member in the optical axis direction.

7 . An image blur correction apparatus, comprising a lens driving apparatus, the lens driving apparatus comprising:
an ultrasonic motor including a drive slider having an output shaft provided so as to project in a direction perpendicular to a driving direction of the drive slider; a lens moving frame configured to hold an optical system, and having a hole into which the output shaft is to be inserted; and a fixed portion configured to support the lens moving frame so that the lens moving frame is movable in a direction perpendicular to an optical axis, hold the ultrasonic motor so that the ultrasonic motor is removable from a side opposite to a side where the lens moving frame is provided, and have a through hole passing through the fixed portion in a direction of the optical axis.

8 . An image pickup apparatus, comprising:
a lens driving apparatus comprising:
an ultrasonic motor including a drive slider having an output shaft provided so as to project in a direction perpendicular to a driving direction of the drive slider;
a lens moving frame configured to hold an optical system, and having a hole into which the output shaft is to be inserted; and
a fixed portion configured to support the lens moving frame so that the lens moving frame is movable in a direction perpendicular to an optical axis, hold the ultrasonic motor so that the ultrasonic motor is removable from a side opposite to a side where the lens moving frame is provided, and have a through hole passing through the fixed portion in a direction of the optical axis; and
an image pickup element configured to receive light from the optical system.

Assignees

• Canon Kk

Inventors

• Isaka Mitsuhiro

Classifications

• G02B27/646 Primary

  compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68) · CPC title

• G02B7/023

  permitting adjustment · CPC title