JP2014174270A5

JP2014174270A5 -

Info

Publication number: JP2014174270A5
Application number: JP2013045546A
Authority: JP
Filing date: 2013-03-07
Publication date: 2016-04-14
Anticipated expiration: 2033-03-07

Description

本発明の目的は、光学素子を移動させた際の光学性能を向上させることである。 An object of the present invention is to improve the optical performance at the time of moving the optical optical element.

本発明によれば、光学素子を移動させた際の光学性能を向上させることができる。 According to the present invention, it is possible to improve the optical performance at the time of moving the optical optical element.

Claims

An image blur correction apparatus that corrects image blur by moving a movable portion that holds an optical element in a direction perpendicular to the optical axis,
Drive means for moving the movable part;
An image blur correction apparatus comprising: a curvature radius setting unit that sets a curvature radius of a surface on which the movable unit moves by the driving unit.

A guide member that is rotatable about a point on the optical axis as a rotation center point, and that constitutes the curvature radius setting means;
A fixed member that has a fixed-side contact region facing the movable-side contact region of the movable part and supports the guide member;
A movable support member that supports the movable part in a state where the movable part can be moved in contact with the movable side contact area of the movable part and the fixed side contact area of the fixed member;
An urging means for generating an urging force for holding the movable support member between the movable portion and the fixed member;
2. The curvature radius is set by changing the position where the guide member rotates about an axis and the movable support member contacts the movable contact area and the fixed contact area. The image blur correction device according to 1.

The movable-side contact area and the fixed-side contact area each have a plurality of areas having a shape that forms a part of a spherical surface with different curvature radii,
The image blur correction apparatus according to claim 2, wherein the guide member rotates around an optical axis, and an area in contact with the movable support member is selected from the plurality of areas.

The movable-side contact region and the fixed-side contact region each have a planar first region and a second region that forms a part of a spherical surface,
The image blur correction apparatus according to claim 2, wherein the guide member rotates around an optical axis and selects the first region or the second region in contact with the movable support member.

The image blur correction apparatus according to claim 2, wherein the movable contact area or the fixed contact area has a curved area in which a radius of curvature continuously changes.

The image blur correction device according to claim 1, wherein the curvature radius setting unit includes a deformation contact surface portion that contacts the movable portion, and an actuator or a mechanism portion that sets a curvature radius of the deformation contact surface portion.

The driving means comprises a coil and a magnet;
The image blur correction apparatus according to claim 1, wherein the coil or the magnet is fixed to the movable portion.

An image blur correction apparatus that corrects image blur by moving a movable portion that holds an optical element in a direction perpendicular to the optical axis,
It is characterized by comprising switching means for switching between moving the movable part in parallel and moving the movable part around an axis orthogonal to the optical axis when moving the movable part in a direction orthogonal to the optical axis. Image shake correction device.

An image blur correction apparatus that corrects image blur by rotating a movable part that holds an optical element around an axis orthogonal to an optical axis,
An image blur correction apparatus comprising: changing means for changing a position of an axis orthogonal to the optical axis in the optical axis direction.

An image blur correction apparatus according to any one of claims 1 to 7,
A lens barrel having a lens moving mechanism for supporting the lens so as to be movable in the optical axis direction;
A lens barrel in which, when the lens moves in the optical axis direction, a curvature radius setting unit of the image blur correction apparatus sets the curvature radius.

An image blur correction device according to any one of claims 2 to 5,
A lens barrel having a lens moving mechanism for supporting the lens so as to be movable in the optical axis direction;
The lens barrel includes a cam barrel that moves the lens in the optical axis direction and rotates the guide member.

A detecting means for detecting a change in an optical component constituting the optical system;
The lens barrel according to claim 10 or 11 , wherein the curvature radius setting means sets the curvature radius according to the optical component detected by the detection means.

The lens barrel according to claim 11 , further comprising a control unit that imparts hysteresis to a relationship between a position of the lens in the optical axis direction and a position of the guide member.

The movable-side contact region and the fixed-side contact region that are in contact with the movable support member each have a plurality of regions with different curvature radii,
The control means is configured such that the potential energy of the guide member when the movable support member can pass through the boundaries of the plurality of regions is higher than the potential energy when the movable support member cannot pass through the boundaries of the plurality of regions. The lens barrel according to claim 13 , wherein the lens barrel is set.

An image blur correction device according to claim 6;
A lens barrel having a lens moving mechanism for supporting the lens so as to be movable in the optical axis direction;
When the lens moves in the optical axis direction, the curvature radius setting means of the image blur correction device detects the position of the lens or the number of parts constituting the optical system and drives the actuator or mechanism unit. A lens barrel characterized by setting the radius of curvature.

A lens moving mechanism that supports the lens movably in the optical axis direction;
An image blur correction unit that corrects image blur by moving a movable portion that holds an optical element in a direction orthogonal to the optical axis;
And switching means for switching whether to move the movable part in parallel or rotationally move about an axis orthogonal to the optical axis when moving the movable part in a direction orthogonal to the optical axis. A lens barrel.

A lens moving mechanism that supports the lens movably in the optical axis direction;
An image blur correction unit that corrects image blur by rotating a movable portion that holds an optical element around an axis orthogonal to the optical axis;
And a changing unit that changes a position of an axis orthogonal to the optical axis in the optical axis direction.

An optical apparatus comprising the lens barrel according to any one of claims 10 to 15 .

A lens moving mechanism that supports the lens movably in the optical axis direction;
An image blur correction unit that corrects image blur by moving a movable portion that holds an optical element in a direction orthogonal to the optical axis;
And switching means for switching whether to move the movable part in parallel or rotationally move about an axis orthogonal to the optical axis when moving the movable part in a direction orthogonal to the optical axis. Optical equipment.

A lens moving mechanism that supports the lens movably in the optical axis direction;
An image blur correction unit that corrects image blur by rotating a movable portion that holds an optical element around an axis orthogonal to the optical axis;
Changing means for changing the position of the axis perpendicular to the optical axis in the optical axis direction.

Imaging apparatus characterized by having a lens barrel according to any one of claims 10 15.

Imaging means;
A lens moving mechanism that supports the lens movably in the optical axis direction;
An image blur correction unit that corrects image blur by moving a movable portion that holds an optical element in a direction orthogonal to the optical axis;
And switching means for switching whether to move the movable part in parallel or rotationally move about an axis orthogonal to the optical axis when moving the movable part in a direction orthogonal to the optical axis. An imaging device.

Imaging means;
A lens moving mechanism that supports the lens movably in the optical axis direction;
An image blur correction unit that corrects image blur by rotating a movable portion that holds an optical element around an axis orthogonal to the optical axis;
An imaging apparatus comprising: changing means for changing a position in an optical axis direction of an axis orthogonal to the optical axis.