Canon Kabushiki Kaisha

Hiromu Yasuda

Chikara Aoshima

Kousuke Kiyamura

Kunihiko Sasaki

Yuki Nagao

Takeya Nakayama

An image stabilizing apparatus includes a movable member holding a lens, a moving unit configured to move the movable member in a predetermined plane, a tilting unit configured to tilt the movable member relative to predetermined plane, a detection unit configured to detect shake, and a control unit configured to control the moving unit and the tilting unit based on shake information obtained from the detection unit. The control unit sets a tilt target value of the tilting unit in accordance with a displacement target value of the moving unit.

Image stabilizing apparatus, lens barrel, and image pickup apparatus

An image stabilizer includes a support member, a movable member holding a correcting member and rotatable relative to the support member around a first rotating axis, which intersects with an optical axis, or a second rotating axis, which intersects with both the optical axis and the first rotating axis, and a restricting member which rotatably holds the movable member around the first rotating axis and restricts rotation of the movable member around the second rotating axis. The support member rotatably holds the restricting member around the second rotating axis along with the movable member and restricts rotation of the restricting member relative to the support member around the first rotating axis.

Image stabilizer, lens barrel, image pickup apparatus, and optical apparatus

An image stabilizer includes a movable member holding a lens, a tilting unit configured to rotate around a predetermined point to tilt the movable member relative to an optical axis, and a driving unit configured to move a position in an optical axis direction of the movable member relative to the tilting unit, the movable member is configured to tilt such that a radius of curvature around the predetermined point varies according to the position in the optical axis direction.

Image stabilizer, lens apparatus, and image pickup apparatus

An image stabilization apparatus is provided that includes a fixed back-plate, a movable barrelthat holds a correction lensand is movably supported by the fixed back-platein a direction perpendicular to the optical axis, a first rotary bodythat is rotatably supported by the fixed back-plateand moves the movable barrelin a first direction depending on rotation thereof, and a first drive motorthat drives the first rotary body. The center axis of the first rotary bodyis arranged within the optical path of an image capturing optical system.

Image stabilization apparatus, optical apparatus, and image capturing apparatus

An image shake correcting device includes a movable unit for holding a correction lens, a rotation preventing plate that rotatably supports the movable unit about a first rotation axis orthogonal to the optical axis, and a fixed base plate that rotatably supports the rotation preventing plate about a second rotation axis orthogonal to the optical axis. The first rotation axis and the second rotation axis intersect at point O on the optical axis of the correction lens. An urging spring urges in a direction where both the movable unit and the fixed base plate are brought closer to each other. A first rolling ball is located on a first hypothetical spherical surface formed between the movable unit and the rotation preventing plate, and a second rolling ball is located on a second hypothetical spherical surface formed between the rotation preventing plate and the fixed base plate.

Image shake correcting device, lens barrel, optical apparatus, and image pickup apparatus

An image shake correction apparatus includes a fixed member; a movable member configured to hold a correcting member that corrects image shake and configured to have a first connecting unit and a second connecting unit; a first moving member connected to the first connecting unit, and configured to move the movable member in a first direction via the first connecting unit; a second moving member connected to the second connecting unit, and configured to move the movable member in a second direction different from the first direction via the second connecting unit; a first drive unit configured to drive the first moving member; and a second drive unit configured to drive the second moving member independently of driving of the first moving member. The first drive unit and the second drive unit share a constituent component.

Image shake correction apparatus, and optical equipment and imaging device provided with same

An image stabilizing apparatus for correcting an image shake by moving an optical element arranged in a lens barrel in a plane orthogonal to an optical axis includes a first rolling holder configured to support a first rolling member so as to be capable of rolling in a first direction orthogonal to the optical axis, the first rolling member moving the optical element in the first direction, and a fixed member attached to a surface of the first rolling holder and providing support for the lens barrel, the first rolling member being provided on the surface.

Image stabilizing apparatus and optical apparatus having the same

An image shake correcting apparatus includes a movable member configured to hold an image shake correcting member; a fixed member configured to hold the movable member so as to be movable along a spherical surface centering on a rotational center point; and an electromagnetic drive unit configured to have a magnet and a coil provided in portions that are mutually opposed in the movable member and the fixed member, wherein the magnet and the coil are disposed with inclination from a direction perpendicular to an optical axis so that a direction of drive force that is generated when the coil is energized approximately conforms to a tangential direction of a spherical surface centering on the rotational center point.

Image shake correcting apparatus, optical equipment, and imaging device

An optical apparatus having a recording mode that is switchable between motion picture recording and still picture recording includes an optical element, a motor that includes a rotor having a magnet, and a stator having a coil configured to provide a rotational force to the magnet, the motor being configured to drive the optical element, a position sensor configured to detect a position of the rotor of the motor, and a driving circuit configured to select, in accordance with the recording mode, first driving configured to switch an electrization to the coil in the motor in accordance with a determined time interval, or second driving configured to switch an electrization to the coil in the motor in accordance with an output of the position sensor.

Optical apparatus having a recording mode for recording a motion picture and a different recording mode for recording a still picture

A drive apparatus includes a magnet rotor having a plurality of magnetic poles that are magnetized, a stator having a magnetic pole portion that opposes each pole of the magnet rotor, a coil configured to excite the magnetic pole portion, a position detector configured to detect a position of the magnet rotor, a first driver configured to switch an electrification state of the coil in accordance with a preset time interval, a second driver configured to switch an electrification state of the coil in accordance with an output of the position detector, and a controller configured to select the first driver when the output of the position detector is less than a first threshold, and to select the second driver when the output of the position detector is equal to or larger than the first threshold.

Drive apparatus

The optical image stabilizer includes a shift member holding an image stabilizing element and being movable with respect to a center axis, a lock member disposed around the shift member and rotatable about the center axis between a lock position to limit movement of the shift member and an unlock position to release the limit of the movement of the shift member, and a base member including a supporting portion to rotatably support the lock member. The shift member includes protrusions at its plural circumferential places. The lock member includes, in its inner circumferential part, locking portions to receive contact of the protrusions at the lock position so as to limit the movement of the shift member. The supporting portion is formed so as to include plural openings allowing contact of the protrusions with the lock portions and so as to support the inner circumferential part of the lock member.

Optical image stabilizer and optical apparatus

An interchangeable lens which is removably mounted on a camera body including an image sensor includes a tilt unit configured to move a lens unit in a tilt direction with respect to the image sensor, a shift unit configured to move the lens unit in a shift direction with respect to the image sensor, a changing unit configured to change a relative angle between the shift unit and the tilt unit by relatively rotating the shift unit and the tilt unit, a detection unit configured to detect the relative angle, and a control unit configured to transmit to the camera body a detection result of the relative angle detected by the detection unit.

Interchangeable lens and camera system

Drive apparatus having a stepping motor

A driving apparatus includes a first magnet, second magnet, stator, first coil, second coil, first bearing, second bearing and rotor. The first and second magnets respectively have a magnetized portion in which S pole and N pole are alternately magnetized. The rotor has a magnetic pole portion opposite to each magnetized portion. The stator fixes the first magnet and second magnet to the same axis to rotatably support the rotor. The first coil magnetically excites a portion where the magnetic pole portion of the rotor faces the first magnet. The second coil magnetically excites a portion where the magnetic pole portion of the rotor faces the second magnet. Thereby, a driving apparatus is provided which stabilizes the quality by simplifying the configuration of a rotor and makes it possible to realize high speed of rotation and improvement of response speed by decreasing the moment of inertia of a rotor.

Driving apparatus

An optical apparatus having a recording mode that is switchable between motion picture recording and still picture recording includes an optical element, a motor that includes a rotor having a magnet, and a stator having a coil configured to provide a rotational force to the magnet, the motor being configured to drive the optical element, a position sensor configured to detect a position of the rotor of the motor, and a driving circuit configured to select, in accordance with the recording mode, first driving configured to switch an electrization to the coil in the motor in accordance with a determined time interval, or second driving configured to switch an electrization to the coil in the motor in accordance with an output of the position senor.

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Kawasaki, Japan

Hiromu Yasuda