JP4784453B2 - Rotating device, light beam deflecting device, shake correcting device, and optical device - Google Patents

Description

  The present invention relates to a rotating device for rotating a rotor with respect to a stator within a predetermined angle range about a central axis by electromagnetic force, and a rotation with a light beam deflecting optical member attached to the stator. A light beam deflecting device that deflects a light beam by rotating the child within a predetermined angle range around the optical axis by electromagnetic force, and each of a plurality of apex angle prisms depending on the amount of shake caused by hand shake or vibration, etc. The present invention relates to a shake correction apparatus that rotates within a predetermined angle range, and an optical apparatus to which the shake correction apparatus is applied.

  In general, as an example of a hollow motor for driving a camera or a robot, a stator coil is fixed to an inner surface of a cylindrical fixed frame serving as a stator portion via a flexible substrate. The outer ring of the bearing is fixed to both ends of the inner surface, and on the other hand, the rotor magnet is fixed to the outer surface of the cylindrical movable frame that becomes the rotor portion so as to face the stator coil, and the inner ring of the bearing is fixed to both ends of the outer surface of the movable frame. Japanese Patent Application Laid-Open No. 2004-228667 discloses a ball that is fixed and a ball is disposed between an outer ring and an inner ring of a bearing, and a movable frame is rotated about a central axis by electromagnetic force with respect to the fixed frame.

  Conventionally, an optical shake correction apparatus that can optically correct shake caused by camera shake or vibration during shooting and shoot as an easy-to-view image without causing a shake in a subject image is a video camera, an electronic still camera, a still camera. It is applied to optical devices such as cameras and binoculars.

  As an example of this type of optical shake correction device, a concave lens and a convex lens that are controlled in a direction to cancel out the shake amount are provided in a video camera, and at least one of the concave lens and the convex lens is virtually set according to the shake amount. Japanese Patent Application Laid-Open No. 2004-228688 discloses a method of deflecting a light beam by rotating about the center of curvature of the following.

Furthermore, as another example of a shake correction device that optically corrects the shake of a video camera caused by hand shake or vibration, the first apex angle variable prism that rotates in the vertical direction is composed of a plano-concave lens and a convex flat lens. The second apex angle variable prism that rotates in the horizontal direction is composed of a plano-concave lens and a convex flat lens, and two-dimensionally by combining the respective rotation angles of the first and second apex angle variable prisms. Japanese Patent Application Laid-Open No. 2004-228561 discloses a variable transmission optical axis.
JP-A-6-292340 JP-A-6-281889 JP-A-10-104678

  By the way, in the hollow motor disclosed in the above-mentioned Patent Document 1, although the movable frame can be rotated around the central axis by electromagnetic force with respect to the fixed frame, the rotor is provided with respect to the stator. Since it is not a structure that can be rotated within a predetermined angle range about the central axis by electromagnetic force, it cannot be applied to the case where the rotation range of the rotor is limited.

  Further, in the optical shake correction apparatus disclosed in Patent Document 2 shown above, at least one of the concave lens and the convex lens is rotated around the virtual center of curvature according to the shake amount to deflect the light flux. However, according to the description of Patent Document 2 described above, for example, when the convex lens is rotated, the convex lens rotating means moves the vertical lens pair of the upper and lower convex lens support members that support the convex lens and the pair of upper and lower convex lens support members in the vertical direction. A pair of left and right convex lens vertical rotation members that rotate left and right, and a convex lens horizontal rotation member that is provided between the pair of left and right convex lens vertical rotation members and rotates the pair of left and right convex lens vertical rotation members in the horizontal direction; The structure of the convex lens rotating means is complicated and large because it is composed of the electromagnetic means for convex lens vertical rotation and the electromagnetic means for convex lens horizontal rotation. There, miniaturization is difficult because it requires an installation space for the components.

  Further, in the shake correction apparatus disclosed in Patent Document 3 described above, the first and second apex angle variable prisms are rotated according to the shake amount caused by hand shake or vibration, and the first and second prisms are rotated. Although the transmission optical axis can be varied two-dimensionally by synthesizing the respective pivot angles of the vertical angle variable prism, the first and second vertical angle variable prisms can be rotated according to the description in Patent Document 3 described above. In this case, since the lens rotating means is engaged with a rack attached to the side wall of the variable vertical angle prism, the pinion attached to the shaft of the motor is meshed with the lens rotating means. Miniaturization is difficult.

  Therefore, a rotating device for rotating the rotor with respect to the stator by an electromagnetic force around a central axis within a predetermined angle range, a light beam deflecting device that has a simple structure and can be miniaturized, and a simple structure In addition, a shake correction device that can be downsized and an optical device to which the shake correction device is applied are desired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the invention according to claim 1 is a circuit for rotating the rotor with respect to the stator within a predetermined angle range about the central axis by electromagnetic force. A moving device,
The stator includes an inner surface orthogonal to the central axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the central axis, and a first back yoke fixed to the inner peripheral surface in an arc shape. A drive coil fixed on the first back yoke,
The rotating element includes a rotating cylinder disposed in the frame body so as to be rotatable about the central axis, and a second back yoke fixed to the outer peripheral surface of the rotating cylinder in an arc shape , A permanent magnet fixed on the second back yoke and facing the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke;
In the rotating device, the rotating cylinder is rotated within a predetermined angle range about the central axis by the electromagnetic force generated between the drive coil and the permanent magnet.
The invention according to claim 2 is a rotating device for rotating the rotor with respect to the stator within a predetermined angle range around the central axis by electromagnetic force.
The stator includes an inner surface orthogonal to the central axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the central axis, and a first back yoke fixed to the inner peripheral surface in a ring shape A drive coil fixed on the first back yoke,
The rotating element includes a rotating cylinder disposed in the frame body so as to be rotatable around the central axis, and a second back yoke fixed to the outer peripheral surface of the rotating cylinder in a ring shape, A permanent magnet fixed on the second back yoke and facing the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke;
In the rotating device, the rotating cylinder is rotated within a predetermined angle range about the central axis by the electromagnetic force generated between the drive coil and the permanent magnet.

The invention of claim 3 wherein is a turning device according to claim 1 or claim 2, characterized in that mounted integrally with the optical member to the rotary cylinder.

According to a fourth aspect of the present invention, there is provided a light beam deflecting device in which a rotor in which a light beam deflecting optical member is integrally attached to a stator is rotated within a predetermined angle range about an optical axis by electromagnetic force. A device,
The stator includes an inner surface orthogonal to the optical axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the optical axis, and a first back yoke fixed to the inner peripheral surface in an arc shape A drive coil fixed on the first back yoke,
The rotator is disposed in the frame so as to be rotatable about the optical axis, and a rotating cylinder in which the light beam deflecting optical member is integrally attached, and an outer periphery of the rotating cylinder A second back yoke fixed to the surface in a circular arc shape, and a permanent magnet fixed on the second back yoke and opposed to the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke;
In the light beam deflecting device, the rotating cylindrical body is rotated within a predetermined angle range about the optical axis by the electromagnetic force generated between the drive coil and the permanent magnet.
According to a fifth aspect of the present invention, there is provided a light beam deflecting device in which a rotor in which a light beam deflecting optical member is integrally attached to a stator is rotated within a predetermined angle range about an optical axis by electromagnetic force. A device,
The stator includes an inner surface orthogonal to the optical axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the optical axis, and a first back yoke fixed to the inner peripheral surface in a ring shape A drive coil fixed on the first back yoke,
The rotator is disposed in the frame so as to be rotatable about the optical axis, and a rotating cylinder in which the light beam deflecting optical member is integrally attached, and an outer periphery of the rotating cylinder A second back yoke fixed to the surface in a ring shape, and a permanent magnet fixed on the second back yoke and opposed to the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke;
In the light beam deflecting device, the rotating cylindrical body is rotated within a predetermined angle range about the optical axis by the electromagnetic force generated between the drive coil and the permanent magnet.

Further, the invention according to claim 6 is a shake in which some of the plurality of apex angle prisms are rotated within a predetermined angle range around the optical axis by electromagnetic force in accordance with a shake amount caused by hand shake or vibration. A correction device,
A first shake amount detector for detecting a first shake amount when shaken in the direction of a first axis perpendicular to the optical axis;
A second shake amount detector for detecting a second shake amount when shaken in a direction of a second axis perpendicular to the optical axis and the first axis;
A frame in which a front inner surface perpendicular to the optical axis and a rear inner surface perpendicular to the optical axis are opposed to each other via an inner circumferential surface concentric with the optical axis, in a circular concave shape,
A fixed vertex prism fixed in the frame;
A first rotation apex angle prism is mounted opposite to the fixed apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the first deflection amount. A moving cylinder,
A pair of first back yokes fixed in a circular arc shape symmetrically about the optical axis along the inner peripheral surface intersecting the second axis in the frame, and inner peripheral surfaces of the pair of first back yokes A pair of first drive coils secured to
A pair of second back yokes fixed in a circular arc symmetrically about the optical axis along an outer peripheral surface intersecting the second axis in the first rotating cylinder and the pair of second back yokes A pair of first permanent magnets fixed to the outer peripheral surface of the first permanent magnet and facing the pair of first drive coils with a slight gap therebetween,
At least three or more ring-shaped grooves formed on the front inner surface of the frame body and a ring-shaped groove formed on the front surface of the first rotating cylinder facing the front inner surface are sandwiched, The rotation of the first rotating cylinder is guided while being pressed against the inner surface of the front side by the magnetic attraction action of the pair of first permanent magnets generated between the pair of first back yokes and the pair of second back yokes. A first ball to
A second rotation apex angle prism is attached to face the first rotation apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the second deflection amount . A second rotating cylinder;
A pair of third back yokes fixed in a circular arc shape symmetrically about the optical axis along the inner peripheral surface intersecting the first axis in the frame, and inner peripheral surfaces of the pair of third back yokes A pair of second drive coils fixed to
A pair of fourth back yokes and a pair of fourth back yokes fixed symmetrically around the optical axis along an outer circumferential surface intersecting the first axis in the second rotating cylinder. A pair of second permanent magnets that are fixed to the outer peripheral surface of the first permanent magnet and are opposed to the pair of second drive coils with a slight gap therebetween,
At least three or more ring-shaped grooves formed on the rear inner surface of the frame body and a ring-shaped groove formed on the rear surface facing the rear inner surface of the second rotating cylinder are sandwiched, The second rotating cylinder rotates while being pressed against the inner surface of the rear side by the magnetic attraction action of the pair of second permanent magnets generated between the pair of third back yokes and the pair of fourth back yokes. A second ball for guiding
The first and second rotating cylinders are moved to the light by the electromagnetic forces generated between the first drive coil and the first permanent magnet and between the second drive coil and the second permanent magnet. The shake correction apparatus is characterized in that each of the shake correction apparatuses rotates within a predetermined angle range about an axis.

According to the seventh aspect of the present invention, there is a vibration in which some of the plurality of apex angle prisms are rotated within a predetermined angle range around the optical axis by electromagnetic force in accordance with a shake amount caused by hand shake or vibration. A correction device,
A first shake amount detector for detecting a first shake amount when shaken in the direction of a first axis perpendicular to the optical axis;
A second shake amount detector for detecting a second shake amount when shaken in a direction of a second axis perpendicular to the optical axis and the first axis;
A frame in which a front inner surface perpendicular to the optical axis and a rear inner surface perpendicular to the optical axis are opposed to each other via an inner circumferential surface concentric with the optical axis, in a circular concave shape,
A fixed vertex prism fixed in the frame;
A first rotation apex angle prism is mounted opposite to the fixed apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the first deflection amount. A moving cylinder,
A first ring-shaped back yoke fixed to the inner peripheral surface located on the front inner surface side in the frame body at right angles to the optical axis, and a plurality of first drives fixed on the first ring-shaped back yoke. Coils,
A second ring-shaped back yoke fixed to the outer peripheral surface of the first rotating cylinder perpendicular to the optical axis, and fixed on the second ring-shaped back yoke and slightly with the plurality of first drive coils. A first ring-shaped permanent magnet magnetized with an even number of poles facing each other at an interval;
At least three or more ring-shaped grooves formed on the front inner surface of the frame body and a ring-shaped groove formed on the front surface of the first rotating cylinder facing the front inner surface are sandwiched, The rotation of the first rotating cylinder is guided while being pressed against the inner surface of the front side by the magnetic attraction action of the first ring-shaped permanent magnet generated between the first ring-shaped back yoke and the second ring-shaped back yoke. A first ball to
A second rotation apex angle prism is attached to face the first rotation apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the second deflection amount . A second rotating cylinder;
A third ring-shaped back yoke fixed to the inner peripheral surface located on the rear inner surface side in the frame body at right angles to the optical axis, and a plurality of second rings fixed on the third ring-shaped back yoke. A drive coil;
A fourth ring-shaped back yoke fixed to the outer peripheral surface of the second rotating cylinder perpendicularly to the optical axis, and fixed on the fourth ring-shaped back yoke and slightly with the plurality of second drive coils. A second ring-shaped permanent magnet magnetized with an even number of poles facing each other at an interval;
At least three or more ring-shaped grooves formed on the rear inner surface of the frame body and a ring-shaped groove formed on the rear surface facing the rear inner surface of the second rotating cylinder are sandwiched, The rotation of the second rotating cylinder while being pressed against the inner surface of the rear side by the magnetic attraction action of the second ring-shaped permanent magnet generated between the third ring-shaped back yoke and the fourth ring-shaped back yoke. A second ball for guiding
The first and second rotating cylinders are moved to the light by the electromagnetic forces generated between the first drive coil and the first permanent magnet and between the second drive coil and the second permanent magnet. The shake correction apparatus is characterized in that each of the shake correction apparatuses rotates within a predetermined angle range about an axis.

Furthermore, an invention described in claim 8 is an optical apparatus comprising the shake correction apparatus according to claim 6 or claim 7 and an optical lens, wherein the optical axes of both are arranged to coincide with each other.

According to the rotating device of the first and second aspects, the rotor can be rotated with respect to the stator within a predetermined angle range around the central axis by electromagnetic force with a simple structure. Therefore, it is possible to provide a rotating device that can be reduced in size with a simple structure.

Further, according to the rotation device according to claim 3, the optical member turning cylinder of the turning device according to claim 1 or claim 2 described above, even if mounted integrally claim 1 or The same effect as in the second aspect can be obtained.

Further, according to the light beam deflecting device according to any one of claims 4 and 5, the rotator having the light beam deflecting optical member attached to the stator with a simple structure is fixed to the predetermined axis around the optical axis by electromagnetic force. Since the light beam can be deflected by rotating within the angle range, a light beam deflecting device that can be miniaturized with a simple structure can be provided.

In addition, according to the shake correction apparatus of the sixth and seventh aspects, the fixed vertical angle prism fixed to the subject side and the first rotating cylinder that rotates about the optical axis are mounted in the frame. The first pivotal apex prism and the second pivotal apex prism attached to the second pivoting cylinder that pivots about the optical axis are incorporated, and the first pivotal apex prism and the first pivotal prism Since the two-rotation vertical angle prism is rotated within a predetermined angle range by electromagnetic force according to the horizontal shake amount and the vertical shake amount, the subject image is in the horizontal shake direction even if the horizontal shake and the vertical shake occur. In addition, since the horizontal shake and the vertical shake can be canceled by moving in a direction that cancels the vertical shake direction, it is possible to provide a shake correction apparatus that can obtain a good subject image and that is simple in structure and small in size.

Furthermore, according to the optical device of the eighth aspect, since the shake correction device according to the sixth or seventh aspect and the optical lens are provided and the optical axes of the two are aligned, the optical device can be downsized. Can be achieved.

  Embodiments of a rotating device, a light beam deflecting device, a shake correcting device, and an optical device according to the present invention will be described in detail below in the order of Embodiment 1 and Embodiment 2 with reference to FIGS. .

  The rotating device, the light beam deflecting device, the shake correcting device, and the optical device according to the present invention all have a predetermined angle about the central axis (or optical axis) with respect to the stator by the electromagnetic force. The technical idea of rotating within the range is the same, and in the following first and second embodiments, the shake correction apparatus according to the present invention is applied to an optical apparatus such as a video camera, an electronic still camera, a still camera, and binoculars. In addition to specifically explaining the example, the technical idea of the rotating device and the light beam deflecting device according to the present invention will be described based on the shake correcting device according to the present invention.

FIG. 1 is a configuration diagram illustrating an overall configuration of a video camera that is an example of an imaging apparatus that captures a subject image as an optical apparatus to which the shake correction apparatus according to the first embodiment of the present invention is applied.
2A, 2B, and 2C show a fixed apex angle prism, a first rotation apex angle prism, and a second rotation apex angle provided in the shake correction apparatus according to the first embodiment of the present invention. Front view, side view, perspective view for explaining the prism,
3 (a) and 3 (b) are diagrams illustrating operations performed by the fixed apex angle prism, the first rotation apex angle prism, and the second rotation apex angle prism provided in the shake correction apparatus according to the first embodiment of the present invention. A diagram for explaining the principle,
FIG. 4 is an exploded perspective view showing the shake correction apparatus according to the first embodiment of the present invention in an exploded manner,
5 (a), 5 (b), and 5 (c) are a YY sectional view, a XX sectional view, a front view, showing a shake correcting apparatus according to the first embodiment of the present invention,
FIG. 6 is a cross-sectional view for explaining a force for pressing a plurality of balls sandwiched between the front frame body and the first rotating cylinder body toward the front frame body side in the shake correction apparatus according to the first embodiment of the present invention. ,
FIG. 7 is a view for explaining the rotation operation of the first rotating cylinder to which the first rotation apex angle prism is attached in the shake correcting apparatus according to the first embodiment of the present invention. FIG. A state is shown, (b) is the figure which showed the time of rotation.

  In the video camera 10 </ b> A shown in FIG. 1, the shake correction device 30 according to the first embodiment of the present invention is attached to the front portion of the lens barrel 11. In this shake correction device 30, the frame 31 is divided into two parts, a front frame 32 and a rear frame 33, which are integrally combined. A fixed apex angle prism fixed on the subject side in the frame 31. 34 and the first rotation apex angle prism that rotates within a predetermined angle range about the optical axis K (= center axis) by electromagnetic force in accordance with the horizontal shake amount (or vertical shake amount) of the video camera 10A. 35 and a second rotation apex angle prism 36 that rotates within a predetermined angle range about the optical axis K by electromagnetic force in accordance with the vertical shake amount (or horizontal shake amount) of the video camera 10A. Built in.

  At this time, one of the first and second rotation apex angle prisms 35 and 36 is rotated according to the lateral shake amount of the video camera 10A, and the other according to the vertical shake amount of the video camera 10A. What is necessary is just to rotate. In the first embodiment, the case where the first rotation vertex prism 35 is rotated according to the lateral shake amount and the second rotation vertex prism 36 is rotated according to the longitudinal shake amount will be described below. .

  Further, in the lens barrel 11, a front lens (group) 12 for photographing a subject along the optical axis K and a subject image photographed by the front lens (group) 12 are zoomed. The zoom lens (group) 13 is movable in the optical axis direction, the iris 14 is openable and closable to adjust the amount of light of the subject image, and the focus is movable in the optical axis direction to adjust the focus of the subject image. A lens (group) 15 and a solid-state imaging device 16 that photoelectrically converts a subject image are arranged in this order from the subject side. At this time, the shake correction device 30 according to the first embodiment and the members 12 to 16 in the lens barrel 11 have the same optical axis.

  In addition, in the video camera 10A, a control unit 21 that controls the whole and a lateral shake amount (first shake amount) when a lateral shake occurs in the direction of the Y axis (first axis) orthogonal to the optical axis K are detected. The vertical shake amount when the vertical shake occurs in the direction of the X-axis (second axis) perpendicular to the optical axis K and Y axis (first axis) 22 Rotation of a vertical shake amount detector (second shake amount detector) 23 for detecting a second shake amount) and a first rotation apex angle prism 35 that rotates in the shake correction device 30 according to the lateral shake amount. A first angle sensor 24 that detects an angle; a second angle sensor 25 that detects a rotation angle of a second rotation apex angle prism 36 that rotates in accordance with the amount of vertical shake in the shake correction device 30; A rotation apex angle pre-rotation that rotates the first and second rotation apex angle prisms 35 and 36 provided in the shake correction device 30 within a predetermined angle range, respectively. The arm drive circuit 26, is provided.

  At this time, the horizontal shake amount detector 22 and the vertical shake amount detector 23 are configured by a known angular velocity sensor such as a gyro, and the horizontal direction (X-axis direction) and the vertical direction (Y-axis direction) of the video camera 10A. , Each angular velocity caused by the lateral shake and the vertical shake is detected, and the lateral shake amount and the vertical shake amount corresponding to each angular velocity are input to the control unit 21. .

  Further, the first angle sensor 24 and the second angle sensor 25 are magnetic forces of respective angle detection magnets (not shown) attached to the first rotation apex angle prism 35 side and the second rotation apex angle prism 36 side, respectively. Is detected by each hall element (not shown), and each detection result is input to the control unit 21 to control each rotation position of the first rotation apex angle prism 35 and the second rotation apex angle prism 36. Therefore, the rotating apex angle prism 35 and the second rotating apex angle prism 36 can be brought to their initial positions at the initial stage.

  Here, as shown in FIGS. 2A and 2B, the fixed apex angle prism 34, the first rotation apex angle prism 35, and the second rotation apex angle provided in the shake correction apparatus 30 of the first embodiment. Both the prisms 36 are formed in a circular shape using transparent optical glass or a transparent resin material, and the apex angle directions are both thin. This is an optical member for deflecting a light beam that is formed with a thick thickness on the opposite side via the axis K.

  Further, the rotation apex angle prism drive circuit 26 supplies each coil drive current to coil wiring boards 48 and 58 (FIG. 5) to be described later according to the lateral shake amount and the vertical shake amount.

  At this time, as shown in FIG. 2C, when viewed from the subject side, the apex angle direction of the fixed apex angle prism 34 to be fixed is always directed to the lower right (for example, −45 ° direction). Is set to

  In addition, the vertical angle direction of the first rotation vertical angle prism 35 that rotates about the optical axis K is set to be upward on the Y axis (first axis) orthogonal to the optical axis K at the initial stage. In addition, the first rotation apex angle prism 35 rotates within a predetermined angle range in the ± direction with respect to the Y axis (first axis) according to the amount of lateral deflection.

  Further, the apex angle direction of the second rotation apex angle prism 36 that rotates about the optical axis K is on the X axis (second axis) orthogonal to the optical axis K and the Y axis (first axis) at the initial stage. The second rotation apex angle prism 36 is rotated within a predetermined angle range in the ± direction with respect to the X axis (second axis) according to the amount of vertical deflection. It is like that.

  Here, the operation principle of the fixed apex angle prism 34, the first rotation apex angle prism 35, and the second rotation apex angle prism 36 will be described with reference to FIGS. 3 (a) and 3 (b).

As shown in FIG. 3A, when the fixed apex angle prism 34, the first rotation apex angle prism 35, and the second rotation apex angle prism 36 are in the initial state, vector θ ₀ , vector θ ₁ , vector θ ₂ Are the image shift vectors corresponding to the vertical angle direction of the fixed vertical angle prism 35, the vertical angle directions of the first rotating vertical angle prism 35, and the vertical angle directions of the second rotating vertical angle prism 36, respectively. Show.

In this initial state, Vectorshita ₁ and Vectorshita ₂ combined vector Vectorshita _{1 + 2} fixed apex angle prism 34 and the first to counteract the Vectorshita ₀ and each apex angle direction of the second rotation angle prism 35, 36 is set As a result, the three apex angle prisms 34, 35 and 36 are equivalent to a parallel plate. Accordingly, since the incident angle of the light beam from the subject is the same as that of the light beam emitted from the apex angle prism and the light beam is not refracted, the image A of the subject on the incident optical axis is emitted as it is without moving. .

Next, FIG. 3B shows that the first rotation apex angle prism 35 is rotated, for example, by + α ₁ according to the lateral shake amount from the initial state, and the second rotation apex angle prism is set according to the vertical shake amount. For example, a state where 36 is rotated by + α ₂ is shown.

During this rotation, the first rotation apex angle prism 35 moves the image shift vector from the vector θ ₁ to the vector θ ′ ₁ , and the second rotation apex angle prism 36 changes the image shift vector from the vector θ ₂ to the vector θ ′ ₂ . since moving, the composite vector vectorθ _{'1 + 2} of _{vectorθ' 1} and vectorθ _'2 is not in alignment with respect Vectorshita ₀ shown in FIG. 3 (a), light is refracted.

In this case, a vector variation Vectorshita _a first rotation apex angle prism 35, a combined vector Vectorshita synthesized by translating the vector variation Vectorshita _b of the second rotation angle prism 36 is obtained, the synthesis If the components of the vector vector θ are θX and θY, the subject image A moves to the subject image A ′ in the first quadrant of the XY coordinates. This state is enlarged and displayed on the right side of FIG.

  As described above, the first rotation apex angle prism 35 is rotated within a predetermined angle range in the ± direction with respect to the Y axis (first axis) according to the lateral deflection amount, and the second rotation apex angle prism 35 By rotating 36 within a predetermined angle range in the ± direction with respect to the X axis (second axis) according to the amount of vertical shake, the subject image A is appropriately within the first to fourth quadrants of the XY coordinates. Since it can move, even if horizontal shake and vertical shake occur in the video camera 10A, the subject image A moves in a direction that cancels out the horizontal shake direction and the vertical shake direction, so that the horizontal shake and the vertical shake can be canceled. A good subject image can be obtained.

  Next, a specific configuration of the shake correction apparatus 30 according to the first embodiment of the present invention will be described with reference to FIGS. 4 and 5A to 5C.

  As shown in FIG. 4 and FIGS. 5A and 5B, in the shake correction apparatus 30 according to the first embodiment of the present invention, the frame body 31 is made up of the front frame body 32 and the rear frame body 33 using a black resin material. The butt surfaces of both 32 and 33 are covered together and fastened together as a frame 31 with a plurality of screws or the like.

  The front frame 32 is formed with a light passage hole 32b for allowing light from a subject to pass through in a rectangular shape on the front surface 32a side, and a circular concave portion 32c is formed in the inside. Has been.

  Further, the rear frame body 33 is formed with a light passage hole 33b passing through the front frame body 32 on the rear surface 33a side so as to pass through in a round hole shape, and the inside of the rear frame body 33 is thinned. A circular recess 33c is formed.

  A fixed apex angle prism 34 is fixed on the subject side in the circular recess 32c of the front frame 32, and the first rotation apex angle prism 35 is integrated with the fixed apex angle prism 34 so as to face the fixed apex angle prism 34. The first rotating cylinder 41 attached in a fixed manner is provided so as to be rotatable within a predetermined angle range around the optical axis K.

  Further, in the circular recess 33 c of the rear frame 33, a second rotation apex angle prism 36 is integrally formed facing the first rotation apex angle prism 35 that is rotatably provided in the front frame body 32. A second rotating cylinder 51 attached to the optical axis K is provided to be rotatable within a predetermined angle range about the optical axis K.

  At this time, when the first and second rotation apex angle prisms 35 and 36 are viewed from the subject side, the apex angle direction of the first rotation apex angle prism 35 is as shown in FIGS. 2 (c) and 5 (a). As shown in FIG. 2C, the apex angle direction of the second pivotal apex prism 36 is upward on the Y axis (first axis) at the initial stage. It is directed toward the front of the drawing on the second axis), and is shown downward in FIG.

  Here, as shown in FIG. 5 (b), on the front frame body 32 side, the circular recess 32 c of the front frame body 32 is connected to the inner peripheral surface of the circular recess 32 c and orthogonal to the optical axis K. At least three of the front inner surface 32d and the front surface 41a facing the front inner surface 32d of the first rotating cylindrical body 41 to which the first rotating apex angle prism 35 is attached are supported by the retainer 42. Ring-shaped grooves 32d1 (shown only in FIG. 6) and 41a1 (shown only in FIG. 6) for rolling the balls 43 are formed, and the plurality of balls 43 are circular concave portions of the front frame body 32. Since it is sandwiched between the front inner surface 32d of 32c and the front surface 41a of the first rotating cylinder 41, the first rotating cylinder 41 can be rotated around the optical axis K by being guided by a plurality of balls 43. It is like that.

  Further, as shown in FIG. 4, the first rotating cylinder 41 has left and right outer peripheral surfaces 41b formed symmetrically in a circular arc shape, and a notch portion 41c is formed above and below the left and right outer peripheral surfaces 41b. It is formed symmetrically.

  4 and 5B, a pair of back yokes 44 are provided on the left and right outer circumferential surfaces 41b intersecting the X axis (second axis) in the first rotating cylinder 41. A pair of permanent magnets 45 are fixed in the pair of back yokes 44 in a symmetrical manner.

  On the other hand, a pair of back yokes 46 are fixed to the left and right of the inner peripheral surface formed concentrically with the optical axis K in the circular recess 32c of the front frame body 32, and are fixed symmetrically in a circular arc shape. A pair of coil wiring boards 48 each having a drive coil 47 is fixed to the upper inner peripheral surface, and the pair of coil wiring boards 48 are attached to a ring-shaped coil wiring board 59 provided on the rear surface 33a side of the rear frame 33. It is connected.

  The pair of back yokes 44 and the pair of permanent magnets 45 fixed to the left and right outer peripheral surfaces 41 b of the first rotating cylinder 41 are arranged on the left and right sides of the inner peripheral surface of the circular recess 32 c formed in the front frame body 32. Since the pair of fixed back yokes 46 and the pair of drive coils 47 are opposed to each other with a slight gap therebetween, the electromagnetic force generating means is configured as a circumferentially opposed type.

  At this time, as shown in an enlarged view in FIG. 6, from the front surface 32 a of the front frame body 32 out of the pair of back yokes 46 fixed to the left and right of the inner peripheral surface of the circular recess 32 c formed in the front frame body 32. The rear end portion at a far position is a position closer to the front surface 32a side of the front frame body 32 by the dimension L than the rear end portions of the pair of back yokes 44 fixed to the left and right outer peripheral surfaces 41b of the first rotating cylinder 41. It is in.

  In this configuration, the magnetic lines of force J by the pair of permanent magnets 45 fixed to the left and right outer peripheral surfaces 41 b of the first rotating cylinder 41 via the pair of back yokes 44 come out from the rear end portions of the pair of back yokes 44. After passing through the pair of coil wiring boards 48, the rear end portions of the pair of back yokes 46 fixed to the left and right of the inner peripheral surface of the circular recess 32c of the front frame body 32 are entered. The magnetic attraction action acts in the direction of attracting 46, in other words, the direction of decreasing the dimension L, and the plurality of balls 43 sandwiched between the front frame 32 and the first rotating cylinder 41 are attached to the front frame 32. The first rotating cylinder 41 is pressed against the front inner surface 32d of the circular concave portion 32c of the front frame body 32 through the plurality of balls 43 by pressing with the force F toward the front inner surface 32d side of the circular concave portion 32c. While the optical axis K Together becomes rotatable mind, the first rotary cylinder 41 is favorably aligning the optical axis K by the magnetic force lines J toward the outer peripheral side.

  At this time, the force F pressing the ball 43 is such that the first inner surface 32d of the circular recess 32c of the front frame 32 is caused by the gravity of the first rotating cylinder 41 even when the front frame 32 is directed in the direction opposite to the direction of gravity. The strength of the permanent magnet 45 is set so that it does not fall apart.

  7A, the pair of permanent magnets 45 fixed to the left and right outer peripheral surfaces 41b of the first rotating cylinder 41 via the pair of back yokes 44 divides the circumference into four equal parts. In the left and right regions, both end portions along the circumferential direction are magnetized to N and S poles, respectively. On the other hand, the back yoke and the permanent magnet are not fixed because the notch 41c is formed in the upper and lower sides adjacent to the left and right outer peripheral surfaces 41b of the first rotating cylinder 41.

At this time, in order to rotate the first rotating cylinder 41 within a predetermined angular range by the electromagnetic force generated between the driving coil 47 and the permanent magnet 45, the circumferential direction of the driving coil 47 to both ends in the circumferential direction is determined. The angle β ₁ with respect to the optical axis is set to be approximately half of the angle β ₂ with respect to the optical axis toward both ends in the circumferential direction of the permanent magnet 45 having a pair of N and S poles. Is opposed to the central portion of the permanent magnet 45 reaching the initial position.

Further, the angle β ₃ with respect to the optical axis to both ends in the circumferential direction of the pair of back yokes 46 fixed to the left and right of the inner peripheral surface of the circular recess 32 c formed in the front frame 32 is greater than the angle β ₂ described above. although set is large, the angle beta ₃ is the angle in a range that does not conflict with a pair of back yokes 56 provided on the frame 33 side after the later.

Therefore, the predetermined angle range when rotating the first rotating cylinder 41 is (β ₃ −β ₂ ), that is, ± (β ₃ −β ₂ ) / In the first embodiment, the angles β ₁ , β ₂ , β ₃ are set so that the first rotating cylinder 41 can rotate about ± 12 ° about the X axis or the Y axis. Yes.

Then, as shown in FIG. 7B, when a current is applied to the pair of drive coils 47 in the coil wiring board 48 according to the amount of lateral vibration, the gap between the pair of drive coils 47 and the pair of permanent magnets 45 is obtained. in since the first rotary cylinder 41 by an electromagnetic force generated to be for example + alpha ₃ only rotates according to the lateral deflection amount, the first rotating apex angle prism 35 is also rotated integrally with the first rotary cylinder 41 To do.

  Returning to FIGS. 4 and 5A and 5B again, the rear frame 33 side is formed in substantially the same structure form as the front frame 32 side described above.

  That is, on the rear frame 33 side, a rear inner surface 33d that is connected to the inner peripheral surface of the circular concave portion 33c in the circular concave portion 33c of the rear frame body 33 and formed orthogonal to the optical axis K, and the second Since at least three or more balls 53 supported by the retainer 52 roll on the rear surface 51a facing the rear inner surface 33d of the second rotating cylinder 51 to which the rotation vertex prism 36 is attached. Ring-shaped grooves (reference numbers not shown) are formed, and a plurality of balls 53 are formed between a rear inner surface 33d of the circular recess 33c of the rear frame 33 and a rear surface 51a of the second rotating cylinder 51. Since it is sandwiched between them, the second rotating cylinder 51 can be rotated around the optical axis K by being guided by the plurality of balls 53.

  Further, as shown in FIG. 4, the second rotating cylinder 51 has upper and lower outer peripheral surfaces 51b formed in a circular arc shape and symmetrically in the vertical direction, and cutout portions 51c on the left and right of the upper and lower outer peripheral surfaces 51b. It is formed symmetrically.

  As shown in FIGS. 4 and 5A, a pair of back yokes 54 are vertically symmetrically formed in a concave frame shape on the upper and lower outer peripheral surfaces 51b intersecting the Y axis in the second rotating cylinder 51. A pair of permanent magnets 55 are fixed in the pair of back yokes 54, respectively.

  On the other hand, a pair of back yokes 56 are fixed vertically and symmetrically to the upper and lower sides of the inner peripheral surface formed concentrically with the optical axis K in the circular recess 33c of the rear frame 33, and these pair of back yokes 56 are fixed. A pair of coil wiring boards 58 each having a drive coil 57 are fixed to the upper inner peripheral surface, and the pair of coil wiring boards 58 are attached to a ring-shaped coil wiring board 59 provided on the rear surface 33a side of the rear frame 33. It is connected.

  The pair of back yokes 54 and the pair of permanent magnets 45 fixed to the upper and lower outer peripheral surfaces 51 b of the second rotating cylinder 51 are located above and below the inner peripheral surface of the circular recess 33 c formed in the rear frame 33. Since the pair of fixed back yokes 56 and the pair of drive coils 57 are opposed to each other with a slight space therebetween, the electromagnetic force generating means is configured as a circumferentially opposed type.

  Therefore, the rear frame 33 side is fixed to the upper and lower sides of the inner peripheral surface of the circular recess 33c formed in the rear frame 33 in the same manner as the front frame 32 side described above with reference to FIG. A front end portion of the back yoke 56 located far from the rear surface 32 a of the rear frame body 33 is more rear than the front end portions of the pair of back yokes 54 fixed to the upper and lower outer peripheral surfaces 51 b of the second rotating cylinder 51. The body 33 is close to the rear surface 33a side by a dimension L (not shown).

  In this configuration, the lines of magnetic force generated by the pair of permanent magnets 55 fixed to the upper and lower outer peripheral surfaces 51 b of the second rotating cylinder 51 via the pair of back yokes 54 come out from the front end portions of the pair of back yokes 54. After passing through the coil wiring board 58, the pair of back yokes 54 enter the front end portions of the pair of back yokes 56 fixed to the upper and lower sides of the inner peripheral surface of the circular recess 33c formed in the rear frame 33. , 56, in other words, a magnetic attraction action acts in the direction of decreasing the dimension L (not shown), and a plurality of balls 53 sandwiched between the rear frame 33 and the second rotating cylinder 51. Is pushed to the rear inner surface 33d side of the circular concave portion 33c of the rear frame body 33 with a force F (not shown), and the second rotating cylinder 51 passes through the balls 53 by this force F (not shown). In the rear side of the circular recess 33c of the rear frame 33 While being pressed against the 33d together it becomes rotatable about the optical axis K, a second rotary cylinder 51 is favorably aligning the optical axis K by the magnetic force lines J toward the outer peripheral side.

  Further, on the rear frame 33 side, a pair of back yokes 54 and a pair of permanent magnets 55 fixed to the upper and lower outer peripheral surfaces 51 b of the second rotating cylinder 51, and a circular recess 33 c formed in the rear frame 33. Since the pair of back yokes 56 and the pair of drive coils 57 fixed on the upper and lower sides of the inner peripheral surface of FIG. 7 only differ from the above-described FIGS. 7 (a) and 7 (b) only in the vertical arrangement, The second rotation apex angle prism 36 can be rotated integrally with the second rotation cylinder 51 according to the amount.

  According to the shake correction apparatus 30 of the first embodiment configured as described above, an electromagnetic force is generated between the pair of permanent magnets 45 by changing the current applied to the pair of drive coils 47 according to the amount of lateral shake. In addition, the current applied to the pair of drive coils 57 is varied in accordance with the amount of vertical deflection, and electromagnetic force is generated between the pair of permanent magnets 55 and attached to the first rotating cylinder 41 in the first time. The moving apex angle prism 35 and the second rotating apex angle prism 36 attached to the second rotating cylinder 51 are each within a predetermined angle range by electromagnetic forces generated according to the lateral shake amount and the vertical shake amount. Since the image is rotated, even if a horizontal shake and a vertical shake occur, the subject image A (FIG. 3) moves in a direction that cancels the horizontal shake direction and the vertical shake direction to cancel the horizontal shake and the vertical shake. As a result, a good subject image can be obtained and the structure is simple. Possible to provide a stabilizing device 30 can be downsized.

  In addition, the video camera 10A (FIG. 1), which is an example of an optical device that includes the shake correction device 30 and the optical lens of the first embodiment and is arranged so that the optical axes of both are aligned, can be reduced in size.

  Here, when the technical idea of the shake correction device 30 of the first embodiment described above is applied, when the camera or the robot is driven, the rotor is centered on the central axis by electromagnetic force with respect to the stator. The rotating device can be configured to rotate within a predetermined angle range.

  In the rotating device described above, for example, the front frame body 32 described above, a pair of back yokes 46 fixed to the left and right of the inner peripheral surface of the circular recess 32c formed in the front frame body 32, and a pair of drives. The coil 47 constitutes a stator, and the first rotating cylinder 41, a pair of back yokes 44 and a pair of permanent magnets 45 fixed to the left and right outer peripheral surfaces 41b of the first rotating cylinder 41, And a pair of back yokes 44, a pair of back yokes 46, and at least three balls 43 supported by a retainer 42 between the front frame body 32 and the first rotating cylinder body 41. Is sandwiched by the magnetic attraction action of a pair of permanent magnets 45 generated between them, and the rotor is rotated with respect to the stator within a predetermined angle range around the central axis by electromagnetic force with a simple structure. This allows you to It can provide rotation device capable of simple and compact. At this time, an optical member (not shown) can be integrally attached to the first rotating cylinder 41 in the rotating device. In this case, the same effect as that of the rotating device described above can be obtained.

  Furthermore, when the technical idea of the shake correction device 30 of the first embodiment described above is applied, a rotor having a light beam deflecting optical member (not shown) attached to the stator is centered on the optical axis by electromagnetic force. Thus, it can be configured as a light beam deflecting device that rotates within a predetermined angle range and deflects the light beam.

  In the above-described light beam deflecting device, for example, the front frame body 32 described above, a pair of back yokes 46 fixed to the left and right of the inner peripheral surface of the circular recess 32c formed in the front frame body 32, and a pair of drives. The coil 47 constitutes a stator, the first rotating cylinder 41, a light beam deflecting optical member (not shown) attached to the first rotating cylinder 41, and the first rotating cylinder. The pair of back yokes 44 and the pair of permanent magnets 45 fixed to the left and right outer peripheral surfaces 41 b of the body 41 constitute a rotator, and the retainer 42 is provided between the front frame body 32 and the first rotating cylinder 41. By sandwiching at least three or more balls 43 supported by the pair of back yokes 44 and the pair of back yokes 46 by the magnetic attraction action of a pair of permanent magnets 45, a simple structure can be applied to the stator. Install the optical member for beam deflection Since the rotating element can be rotated within a predetermined angle range about the optical axis by electromagnetic force to deflect the light beam, it is possible to provide a light beam deflecting device that has a simple structure and can be miniaturized. .

FIG. 8 is a block diagram showing the overall configuration of a video camera to which the shake correction apparatus according to the second embodiment of the present invention is applied.
FIG. 9 is an exploded perspective view showing the shake correction apparatus according to the second embodiment of the present invention in an exploded manner,
FIGS. 10A and 10B are a YY sectional view, a front view, and a front view showing a shake correcting apparatus according to the second embodiment of the present invention.
FIG. 11 is a cross-sectional view for explaining a force for pressing a plurality of balls sandwiched between the front frame body and the first rotating cylinder body to the front frame body side in the shake correcting apparatus according to the second embodiment of the present invention. ,
FIG. 12 is a view for explaining the rotation operation of the first rotating cylinder to which the first rotation apex angle prism is attached in the shake correcting apparatus according to the second embodiment of the present invention. FIG. A state is shown, (b) is the figure which showed the time of rotation.

  In the video camera 10 </ b> B shown in FIG. 8, the shake correction device 60 according to the second embodiment of the present invention is attached to the front portion of the lens barrel 11. In the shake correcting device 60, the frame body 61 is divided into three parts, which are a front frame body 62, an intermediate frame body 63, and a rear frame body 64, and are integrally combined. Similarly, a fixed angle prism 34 fixed on the subject side and a predetermined angular range centered on the optical axis K (= center axis) by electromagnetic force according to the lateral shake amount (or vertical shake amount) of the video camera 10B. The first rotation apex angle prism 35 that rotates inside and the vertical shake amount (or the horizontal shake amount) of the video camera 10B is rotated within a predetermined angle range around the optical axis K by electromagnetic force. The second rotation apex angle prism 36 is built in the order described above.

  At this time, the fixed apex angle prism 34 and the first and second rotating apex angle prisms 35 and 36 are each of the apex angles as in the first embodiment described above with reference to FIGS. Direction is set.

  In addition, as in the first embodiment, one of the first and second rotation apex angle prisms 35 and 36 is rotated according to the amount of lateral shake of the video camera 10B, and the other is the video camera 10B. What is necessary is just to rotate according to the amount of vertical deflection. In the second embodiment as well, a case where the first rotation apex angle prism 35 is rotated according to the lateral shake amount and the second rotation apex angle prism 36 is rotated according to the vertical shake amount will be described below. .

  In the lens barrel 11, as in the first embodiment, a front lens (group) 12, a variable power lens (group) 13, an iris 14, a focus lens (group) 15, and a subject image are stored. The solid-state imaging device 16 that performs photoelectric conversion is arranged in this order from the subject side. At this time, the shake correction device 60 of the second embodiment and the members 12 to 16 in the lens barrel 11 have the same optical axis.

  In the video camera 10B, as in the first embodiment, the control unit 21, the lateral shake amount detector 22, the longitudinal shake amount detector 23, the first angle sensor 24, and the second angle sensor are provided. 25 and a rotation vertex angle prism drive circuit 26 are provided.

  Next, a specific configuration of the shake correction apparatus 60 according to the second embodiment of the present invention will be described with reference to FIGS. 9 and 10A and 10B. In the shake correction device 60 of the second embodiment, the Y axis orthogonal to the optical axis K is the first axis, and the X axis orthogonal to the optical axes K and Y is the second axis.

  As shown in FIGS. 9 and 10A and 10B, in the shake correction apparatus 60 according to the second embodiment of the present invention, the frame body 61 is formed of the front frame body 62 and the middle frame body 63 using a black resin material. The rear frame body 64 is divided into three parts, and the butted surfaces of the frame bodies 62, 63, 64 are covered with each other and fastened together as a frame body 61 with a plurality of screws or the like.

  In the front frame 62, a light passage hole 62b for allowing light from a subject to pass through is formed in a rectangular shape on the front surface 62a side, and a circular concave portion 62c is formed in the inside. Has been.

  Further, the above-described middle frame 63 is formed with a large-diameter round hole 63a that penetrates a part of the inner peripheral surface of the frame 61 inside.

  Further, the rear frame body 64 is formed with a light passage hole 64b passing through the front frame body 62 and the intermediate frame body 63 on the rear surface 64a side so as to penetrate in a round hole shape. A hollow concave portion 64c is formed in the inside.

  In addition, a fixed apex prism 34 is fixed on the subject side in the circular recess 62c of the front frame 62.

  Further, in the circular recess 62c of the front frame body 62 and the circular hole 63a of the middle frame body 63, a first rotation vertex angle prism 35 is integrally attached to face the fixed vertex angle prism 34. A rotating cylinder 71 is provided to be rotatable within a predetermined angle range about the optical axis K.

  Further, the second rotary apex angle prism 36 is integrally mounted in the round hole 63a of the middle frame 63 and the circular recess 64c of the rear frame 64 so as to face the first rotary apex angle prism 35. The second rotating cylinder 81 is provided so as to be rotatable within a predetermined angle range about the optical axis K.

  At this time, when the first and second rotary apex angle prisms 35 and 36 are viewed from the subject side, the apex angle direction of the first rotary apex angle prism 35 is as shown in FIGS. 2 (c) and 10 (a). As shown in FIG. 2C, the apex angle direction of the second pivotal apex prism 36 is upward on the Y axis (first axis) at the initial stage. Heading toward the front of the figure on the second axis).

  Here, on the front frame body 62 side, a front inner surface 62d that is connected to the inner peripheral surface of the circular concave portion 62c in the circular concave portion 62c of the front frame body 62 and formed orthogonal to the optical axis K, For rolling at least three or more balls 73 supported by the retainer 72 on the front surface 71a facing the front inner surface 62d of the first rotation cylinder 71 to which the rotation angle prism 35 is attached. Ring-shaped grooves 62d1 (shown only in FIG. 11) and 71a1 (shown only in FIG. 11) are respectively formed, and the plurality of balls 73 are connected to the front inner surface 62d of the circular recess 62c of the front frame 62 and the first rotation. Since it is sandwiched between the front surface 71 a of the cylindrical body 71, the first rotating cylindrical body 71 can be rotated around the optical axis K by being guided by a plurality of balls 73.

  The first rotating cylinder 71 has a ring-shaped back yoke 74 fixed so as to be orthogonal to the optical axis K along the outer peripheral portion on the rear surface 71b (FIG. 9) side, and this ring-shaped back yoke. A ring-shaped permanent magnet 75 is fixed to 74 toward the circular recess 62 c of the front frame 62.

  On the other hand, at the rear end portion of the inner peripheral surface located on the front inner surface 62d side in the circular concave portion 62c of the front frame body 62, the dimension is 2 × H than the outer peripheral diameter of the ring-shaped permanent magnet 75 (only FIG. 11 is shown). A ring-shaped back yoke 76 having a flange having a large diameter is fixed so as to be orthogonal to the optical axis K, and a plurality of drive coils 77 are provided on the ring-shaped back yoke 76 having a flange at intervals of 45 °. A ring-shaped coil wiring board 78 is fixed toward the ring-shaped permanent magnet 75 in a state in which the drive coils 77 are printed in series (series), and is connected to the ring-shaped coil wiring board 78 protruding from the ring-shaped coil wiring board 78. The pattern portion 78a is exposed toward the outside of the middle frame 63.

  Further, a ring-shaped back yoke 79 is fixed to the back surface of the front surface 71a of the first rotating cylinder 71 so as to be orthogonal to the optical axis K, and the ring-shaped back yoke 79 integrally rotates with the first rotating cylinder 71. A magnetic loop to the ring-shaped back yoke 74 fixed to the cylindrical body 71 is formed.

  The ring-shaped back yoke 74 and the ring-shaped permanent magnet 75 fixed to the rear surface 71b side of the first rotating cylinder 71 are located at the rear end portion of the inner peripheral surface of the circular recess 62c formed in the front frame body 62. There are a plurality of ring-shaped back yokes 79 which are opposed to the fixed ring-shaped back yoke 76 and the plurality of drive coils 77 with a slight space therebetween and are fixed to the back surface of the front surface 71a of the first rotating cylinder 71. Since this is opposed to the drive coil 77 with a slight gap, the electromagnetic force generating means is configured as a ring surface facing type.

  At this time, as shown in an enlarged view in FIG. 11, the magnetic lines of force J generated by the ring-shaped permanent magnet 75 fixed to the rear surface 71 b side of the first rotating cylinder 71 via the ring-shaped back yoke 74 are generated in the front frame body 62. Since the ring-shaped back yoke 76 having a flange diameter larger than that of the ring-shaped permanent magnet 75 fixed to the rear end portion of the inner peripheral surface of the circular concave portion 62c formed in FIG. In other words, the magnetic attraction acts in the direction of narrowing the distance between the two back yokes 74, 76, and the plurality of balls 73 sandwiched between the front frame body 62 and the first rotating cylinder 71 are attached to the front frame body 62. The circular concave portion 62c is pushed by the force F toward the front inner surface 62d, and the force F causes the first rotating cylinder 71 to be pressed against the front inner surface 62d of the circular concave portion 62c of the front frame body 62 while centering the optical axis K. And can be rotated The first rotary cylinder 71 is favorably aligning the optical axis K by the magnetic force line J towards.

  At this time, the force F for pressing the ball 73 is such that the first inner surface 62d of the circular recess 62c of the front frame 62 is caused by the gravity of the first rotating cylinder 71 even when the front frame 62 is directed in the direction opposite to the direction of gravity. Although the strength of the ring-shaped permanent magnet 75 is set so as not to fall apart from the head, when the strength of the ring-shaped permanent magnet 75 is too strong, the ring-shaped permanent magnet 75 is fixed to the back surface of the front surface 71a of the first rotating cylinder 71. The strength of the magnetic field is adjusted by setting the outer diameter of the ring-shaped back yoke 79.

  Further, as shown in FIG. 12A, the ring-shaped permanent magnet 75 fixed to the rear surface 71b (FIG. 11) side of the first rotating cylinder 71 via the ring-shaped back yoke 74 includes an N pole and an S pole. Are magnetized to 8 poles at intervals of 45 ° along the circumferential direction, and a ring-shaped back yoke with a hook at the rear end portion of the inner peripheral surface of the circular recess 62c formed in the front frame 62 A total of seven drive coils 77 provided on the ring-shaped coil wiring board 78 fixed through 76 are also arranged at intervals of 45 °. The number of drive coils 77 may be eight, but is seven for convenience of the wiring pattern.

  Accordingly, also in the second embodiment, similarly to the first embodiment, the first rotating cylinder 71 is rotated within a predetermined angular range by the electromagnetic force generated between the drive coil 77 and the ring-shaped permanent magnet 75. In order to achieve this, the angle with respect to the optical axis toward one end in the circumferential direction of one drive coil 77 among the plurality of drive coils 77 is a set of N poles and S poles in the ring-shaped permanent magnet 75 ( 2 poles) is set to substantially half the angle with respect to the optical axis to both ends of the circumferential direction of the permanent magnet 75. Specifically, as shown in the drawing, light to both ends of the circumferential direction of one drive coil 77 The angle with respect to the axis is about 45 °, and the angle with respect to the optical axis at both ends in the circumferential direction of a pair (two poles) of permanent magnets 75 that are a pair of N and S poles is about 90 °.

  In other words, the circumference of one drive coil 77 in the plurality of drive coils 77 in a state where the plurality of drive coils 77 are connected in series (series) and the ring-shaped permanent magnet 75 is magnetized to an even pole. The angle with respect to the optical axis toward both ends in the direction is the angle with respect to the optical axis toward both ends in the circumferential direction of one (one pole) permanent magnet 75 magnetized to the N pole or S pole in the ring-shaped permanent magnet 75. Is almost the same.

  At this time, one drive coil 77 is attached to the cross point between the adjacent N pole and S pole in the magnetizing area of a pair (two poles) of permanent magnets 75 in which the N pole and the S pole are combined. In this case, the rotation torque is not generated and cannot be restored. Therefore, the rotation angle is within the circumferential magnetization angle. In fact, the drive coil 77 itself has a variation in the mounting angle. Since the generated torque is not perfect at the portion where the density rises, the predetermined angular range when rotating the first rotating cylinder 71 is one (one pole) permanent magnetized to the N pole or S pole. When the angle of the magnet 75 is about 2/3 of the circumferential direction and the mounting angle in the circumferential direction of one permanent magnet 75 magnetized on the N or S pole is 45 °. Has a predetermined angle range of 30 °, that is, ± It becomes about 5 °.

  Although the number of magnetic poles of the ring-shaped permanent magnet 75 fixed to the rear surface 71b (FIG. 11) side of the first rotating cylinder 71 via the ring-shaped back yoke 74 is set to 8 in this embodiment. Without being limited thereto, the number of magnetic poles of the ring-shaped permanent magnet 75 may be an even number, and if the number of magnetic poles of the ring-shaped permanent magnet 75 is set to 4, 6, 8, 12,. From the above, the predetermined rotation ranges are 60 °, 40 °, 30 °, 20 °, and so on.

Then, as shown in FIG. 12B, when a current is applied to the seven drive coils 77 in the coil wiring board 78 according to the amount of lateral vibration, the seven drive coils 77 and eight poles are magnetized. The first rotating cylinder 71 (FIG. 11) is rotated by, for example, + α ₄ according to the amount of lateral vibration due to the electromagnetic force generated between the ring-shaped permanent magnet 75 and the first rotating cylinder 71 ( The first rotation vertical angle prism 35 (FIG. 11) also rotates together with FIG.

  9 and 10A and 10B again, the rear frame body 64 side is formed in substantially the same structure form as the front frame body 62 side described above.

  That is, on the rear frame body 64 side, a rear inner surface 64d that is connected to the inner peripheral surface of the circular concave portion 64c in the circular concave portion 64c of the rear frame body 64 and orthogonal to the optical axis K, Of the second rotating cylinder 81 to which the rotating apex angle prism 36 is attached, at least three or more of the circular concave surfaces 81c that are retracted from the rear surface 81b and face the rear inner surface 64d described above are supported by the retainer 82. Ring-shaped grooves (reference numbers not shown) for rolling the balls 83 are respectively formed. The plurality of balls 83 are formed on the rear inner surface 64d of the circular recess 64c of the rear frame body 64 and the second rotating cylinder. Since it is sandwiched between the circular concave surface 81 c of the body 81, the second rotating cylinder 81 can be rotated around the optical axis K by being guided by a plurality of balls 83.

  The second rotating cylinder 81 has a ring-shaped back yoke 84 fixed so as to be orthogonal to the optical axis K along the outer peripheral portion on the front surface 81a (FIG. 9) side, and this ring-shaped back yoke. A ring-shaped permanent magnet 85 magnetized with 84 poles 84 is fixed toward the circular recess 64c of the rear frame 64.

  On the other hand, at the front end portion of the inner peripheral surface located on the rear inner surface 64d side in the circular concave portion 64c of the rear frame body 64, only the dimension 2 × H (not shown) is larger than the outer peripheral diameter of the ring-shaped permanent magnet 85. A ring-shaped back yoke 86 with a hook formed in a large diameter is fixed so as to be orthogonal to the optical axis K, and seven drive coils 87 are provided on the hook-shaped ring back yoke 86 at intervals of 45 °. The ring-shaped coil wiring board 88 is fixed toward the ring-shaped permanent magnet 85 side in a state where the drive coils 87 are printed in series (series), and is connected to the ring-shaped coil wiring board 88 protruding from the ring-shaped coil wiring board 88. A pattern portion (88a, not shown) is exposed to the outside of the middle frame 63.

  Further, a ring-shaped back yoke 89 is fixed to the rear surface of the rear surface 81b of the second rotating cylinder 81 so as to be orthogonal to the optical axis K, and the ring-shaped back yoke 89 is integrated with the second rotating cylinder 89 in the second rotation. A magnetic loop to the ring-shaped back yoke 84 fixed to the cylindrical body 81 is formed.

  The ring-shaped back yoke 84 and the ring-shaped permanent magnet 85 fixed to the front surface 81 a side of the second rotating cylinder 81 are fixed to the front end portion of the inner peripheral surface of the circular recess 64 c formed in the rear frame body 64. The ring-shaped back yoke 89 and the plurality of drive coils 87 facing each other with a slight gap therebetween, and the ring-shaped back yoke 89 fixed to the back surface of the rear surface 81b of the second rotating cylinder 81 includes a plurality of Since it is opposed to the drive coil 87 with a slight gap, the electromagnetic force generating means is configured as a ring surface facing type.

  Accordingly, on the rear frame body 64 side, as in the case of the front frame body 62 side described above with reference to FIG. 11, the ring fixed to the front surface 81a side of the second rotating cylinder 81 via the ring-shaped back yoke 84. The magnetic lines of force generated by the ring-shaped permanent magnet 85 enter the ring-shaped back yoke 86 with a flange having a larger diameter than the ring-shaped permanent magnet 85 fixed to the front end portion of the inner peripheral surface of the circular recess 64 c formed in the rear frame 64. The magnetic attraction acts in the direction in which the back yokes 84 and 86 are attracted, in other words, in the direction in which the distance between the back yokes 84 and 86 is reduced, and between the rear frame body 64 and the second rotating cylinder 81. The plurality of sandwiched balls 83 are pressed against the rear inner surface 64d of the circular recess 64c of the rear frame 64 with a force F (not shown), and the second rotating cylinder 81 is caused by this force F (not shown). On the rear inner surface 64d of the circular recess 64c of the rear frame body 64 Together with lighted while allowing rotation about the optical axis K, a second rotary cylinder 81 is favorably aligning the optical axis K by the magnetic force lines toward the outer peripheral side.

  Further, on the rear frame body 64 side, the arrangement relationship between the ring-shaped permanent magnet 85 and the plurality of drive coils 87 is the same as that on the front frame body 62 side described with reference to FIGS. 12A and 12B described above. Therefore, the second rotating cylinder 81 can be rotated according to the amount of vertical deflection.

  According to the shake correction device 60 of the second embodiment configured as described above, the electromagnetic force is generated between the ring-shaped permanent magnet 75 by varying the current applied to the plurality of drive coils 77 according to the amount of lateral shake. In addition, the current applied to the plurality of drive coils 87 is varied in accordance with the amount of vertical deflection, and electromagnetic force is generated between the ring-shaped permanent magnet 85 and attached to the first rotating cylinder 71. The moving apex angle prism 35 and the second rotating apex angle prism 36 attached to the second rotating cylinder 81 are each within a predetermined angle range by electromagnetic forces generated according to the lateral shake amount and the vertical shake amount. Since the image is rotated, even if a horizontal shake and a vertical shake occur, the subject image A (FIG. 3) moves in a direction that cancels the horizontal shake direction and the vertical shake direction to cancel the horizontal shake and the vertical shake. So you can get a good subject image and easy Concrete in possible to provide a compact capable shake correction apparatus 60.

  Furthermore, the video camera 10B (FIG. 8), which is an example of an optical device that includes the shake correction device 60 of the second embodiment and the optical lens and is arranged so that the optical axes of both are aligned, can be reduced in size.

  Here, when the technical idea of the shake correction device 60 of the second embodiment described above is applied, when the camera or the robot is driven, the rotor is centered on the central axis by electromagnetic force with respect to the stator. The rotating device can be configured to rotate within a predetermined angle range.

  In the above rotating device, for example, the front frame body 62 described above and the ring-shaped back yoke 76 with a hook fixed to the rear end portion of the inner peripheral surface of the circular recess 62 c formed in the front frame body 62. And a plurality of drive coils 77 constitute a stator, and the first rotating cylinder 71, a ring-shaped back yoke 74 and a ring-shaped permanent magnet fixed to the rear surface 71b of the first rotating cylinder 71 are provided. 75, and a rotor, and at least three or more balls 73 supported by the retainer 72 between the front frame body 62 and the first rotating cylinder 71 are connected to the ring-shaped back yoke 74 and the hooked ring shape. By sandwiching the ring-shaped permanent magnet 75 between the back yoke 76 by the magnetic attraction action, the rotor is moved with respect to the stator by electromagnetic force within a predetermined angle range with the center axis as the center by a simple structure. Can be rotated with Runode, thereby the structure can provide a rotating device capable of simple and compact. At this time, an optical member (not shown) can be integrally attached to the first rotating cylinder 71 in the rotating device, and in this case, the same effect as the above-described rotating device can be obtained.

  Furthermore, when the technical idea of the shake correction device 60 of the second embodiment described above is applied, a rotor having a light beam deflecting optical member (not shown) attached to the stator is centered on the optical axis by electromagnetic force. Thus, it can be configured as a light beam deflecting device that rotates within a predetermined angle range and deflects the light beam.

  In the above-described light beam deflecting device, for example, the ring-shaped back yoke 76 with a hook fixed to the rear end portion of the inner peripheral surface of the front frame body 62 described above and the circular recess 62 c formed in the front frame body 62. And a plurality of drive coils 77 constitute a stator, and the first rotating cylinder 71, a light beam deflecting optical member (not shown) attached to the first rotating cylinder 71, and the first The ring-shaped back yoke 74 and the ring-shaped permanent magnet 75 fixed to the rear surface 71 b side of the one rotating cylinder 71 constitute a rotor, and between the front frame body 62 and the first rotating cylinder 71. By holding at least three or more balls 73 supported by the retainer 72 by the magnetic attractive action of the ring-shaped permanent magnet 75 generated between the ring-shaped back yoke 74 and the hooked ring-shaped back yoke 76, a simple structure is achieved. Luminous flux against the stator Since the rotator attached with the directional optical member can be rotated within a predetermined angle range around the optical axis by electromagnetic force to deflect the light beam, the structure is simple and the size can be reduced. A light beam deflecting device can be provided.

1 is a configuration diagram illustrating an overall configuration of a video camera that is an example of an imaging apparatus that captures a subject image as an optical apparatus to which a shake correction apparatus according to a first embodiment of the present invention is applied. FIG. (A), (b), and (c) are a fixed apex angle prism, a first rotation apex angle prism, and a second rotation apex angle prism provided in the shake correction apparatus according to the first embodiment of the present invention. It is the front view, side view, and perspective view for demonstrating. (A), (b) shows the operation principle of the fixed apex angle prism, the first rotation apex angle prism, and the second rotation apex angle prism provided in the shake correction apparatus of Embodiment 1 according to the present invention. It is a figure for demonstrating. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a shake correction apparatus according to a first embodiment of the present invention in an exploded manner. (A), (b), (c) is the YY sectional view, XX sectional view, and front view which showed the shake correction apparatus of Example 1 which concerns on this invention. In the shake correction apparatus according to the first embodiment of the present invention, it is a cross-sectional view for explaining a force for pressing a plurality of balls held between a front frame body and a first rotating cylinder body toward the front frame body side. In the shake correction apparatus of Example 1 which concerns on this invention, it is a figure for demonstrating the rotation operation | movement of the 1st rotation cylinder which attached the 1st rotation apex angle prism, (a) shows an initial state. (B) is the figure which showed the time of rotation. It is the block diagram which showed the whole structure of the video camera to which the shake correction apparatus of Example 2 which concerns on this invention is applied. It is the disassembled perspective view which decomposed | disassembled and showed the shake correction apparatus of Example 2 which concerns on this invention. (A), (b) is the YY sectional drawing and front view which showed the shake correction apparatus of Example 2 which concerns on this invention. In the shake correction apparatus according to the second embodiment of the present invention, it is a cross-sectional view for explaining a force for pressing a plurality of balls sandwiched between a front frame body and a first rotating cylinder body toward the front frame body side. In the shake correction apparatus of Example 2 which concerns on this invention, it is a figure for demonstrating the rotation operation | movement of the 1st rotation cylinder which attached the 1st rotation apex angle prism, (a) shows an initial state. (B) is the figure which showed the time of rotation.

Explanation of symbols

10A, 10B ... Video camera,
DESCRIPTION OF SYMBOLS 11 ... Lens barrel, 12 ... Front lens (group), 13 ... Variable magnification lens (group), 14 ... Iris,
15 ... Focus lens (group), 16 ... Solid-state image sensor,
21 ... control unit,
22 ... 1st shake amount detector (lateral shake amount detector),
23 ... second shake amount detector (vertical shake amount detector),
24... First angle sensor 25. Second angle sensor 26...
30 ... shake correction apparatus of embodiment 1,
31 ... Frame,
32 ... front frame, 32a ... front surface, 32b ... light passage hole, 32c ... circular recess,
32d ... front inner surface, 32d1 ... ring-shaped groove,
33 ... rear frame, 33a ... rear surface, 33b ... light passage hole, 33c ... circular recess,
33d ... rear inner surface,
34. Fixed vertex angle prism,
35 ... 1st rotation apex angle prism, 36 ... 2nd rotation apex angle prism,
41 ... 1st rotation cylinder,
41a ... front surface, 41a1 ... ring-shaped groove, 41b ... outer peripheral surface, 41c ... notch,
42 ... Retainer, 43 ... Ball, 44 ... Back yoke, 45 ... Permanent magnet,
46 ... back yoke, 47 ... coil, 48 ... coil wiring board,
51. Second rotating cylinder,
51a ... rear surface, 51b ... outer peripheral surface, 51c ... notch,
52 ... Retainer, 53 ... Ball, 54 ... Back yoke, 55 ... Permanent magnet,
56 ... Back yoke, 57 ... Drive coil, 58 ... Coil wiring board,
59 ... Ring coil wiring board,
60 ... shake correction apparatus of embodiment 2,
61 ... Frame,
62 ... front frame body, 62a ... front face, 62b ... light passage hole, 62c ... circular recess,
62d ... front side inner surface, 62d1 ... ring-shaped groove,
63 ... Medium frame, 63a ... Round hole,
64 ... rear frame body, 64a ... rear surface, 64b ... light passage hole, 64c ... circular recess,
64d ... rear inner surface,
71 ... 1st rotation cylinder,
71a ... front surface, 71a1 ... ring-shaped groove, 71b ... rear surface,
72 ... Retainer 73 ... Ball
74 ... Ring-shaped back yoke, 75 ... Ring-shaped permanent magnet,
76 ... Ring-shaped back yoke with flange, 77 ... Drive coil, 78 ... Ring coil wiring board,
79 ... Ring-shaped back yoke,
81 ... the second rotating cylinder,
81a ... front surface, 81b ... rear surface, 82 ... retainer, 83 ... ball,
84 ... Ring-shaped back yoke, 85 ... Ring-shaped permanent magnet,
86 ... Ring-shaped back yoke with hook, 87 ... Coil, 88 ... Coil wiring board,
89 ... Ring-shaped back yoke,
Y axis ... 1st axis, X axis ... 2nd axis.

Claims (8)

A rotating device for rotating the rotor with respect to the stator by electromagnetic force within a predetermined angle range about the central axis;
The stator includes an inner surface orthogonal to the central axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the central axis, and a first back yoke fixed to the inner peripheral surface in an arc shape. A drive coil fixed on the first back yoke,
The rotating element includes a rotating cylinder disposed in the frame body so as to be rotatable about the central axis, and a second back yoke fixed to the outer peripheral surface of the rotating cylinder in an arc shape , A permanent magnet fixed on the second back yoke and facing the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke ;
A rotating device characterized in that the rotating cylinder is rotated within a predetermined angle range about the central axis by the electromagnetic force generated between the drive coil and the permanent magnet. A rotating device for rotating the rotor with respect to the stator by electromagnetic force within a predetermined angle range about the central axis;
The stator includes an inner surface orthogonal to the central axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the central axis, and a first back yoke fixed to the inner peripheral surface in a ring shape A drive coil fixed on the first back yoke,
The rotating element includes a rotating cylinder disposed in the frame body so as to be rotatable around the central axis, and a second back yoke fixed to the outer peripheral surface of the rotating cylinder in a ring shape, A permanent magnet fixed on the second back yoke and facing the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke;
It said electromagnetic force by the rotating cylindrical body to the central axis rotating device you characterized by rotating within a predetermined angular range about the occurring between the permanent magnet and the driving coil. The rotating device according to claim 1, wherein an optical member is integrally attached to the rotating cylinder . A light beam deflector for an optical member with respect to the stator a light beam deflection device for rotating within the angular range of Tokoro around the optical axis constant by electromagnetic force turning member mounted integrally,
The stator includes an inner surface orthogonal to the optical axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the optical axis, and a first back yoke fixed to the inner peripheral surface in an arc shape A drive coil fixed on the first back yoke,
The rotator is disposed in the frame so as to be rotatable about the optical axis, and a rotating cylinder in which the light beam deflecting optical member is integrally attached, and an outer periphery of the rotating cylinder A second back yoke fixed to the surface in a circular arc shape, and a permanent magnet fixed on the second back yoke and opposed to the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke;
Light beam deflecting device, characterized in that to the pivot within an angular range of the pivoting cylindrical body a Jo Tokoro around the said optical axis by the electromagnetic force generated between the permanent magnet and the driving coil. A light beam deflector for an optical member with respect to the stator a light beam deflection device for rotating within the angular range of Tokoro around the optical axis constant by electromagnetic force turning member mounted integrally,
The stator includes an inner surface orthogonal to the optical axis, a frame body connected to the inner surface and having an inner peripheral surface concentric with the optical axis, and a first back yoke fixed to the inner peripheral surface in a ring shape A drive coil fixed on the first back yoke,
The rotator is disposed in the frame so as to be rotatable about the optical axis, and a rotating cylinder in which the light beam deflecting optical member is integrally attached, and an outer periphery of the rotating cylinder A second back yoke fixed to the surface in a ring shape, and a permanent magnet fixed on the second back yoke and opposed to the drive coil with a slight gap therebetween,
Further, at least three or more ring-shaped grooves formed on the inner surface of the frame body and a ring-shaped groove formed on the front surface of the rotating cylinder facing the inner surface are sandwiched, and the first back A ball for guiding the rotation of the rotating cylinder while being pressed against the inner surface by a magnetic attraction action of the permanent magnet generated between the yoke and the second back yoke;
Light beam deflecting device, characterized in that to the pivot within an angular range of the pivoting cylindrical body a Jo Tokoro around the said optical axis by the electromagnetic force generated between the permanent magnet and the driving coil. A shake correction apparatus that rotates some of the plurality of apex angle prisms around an optical axis by electromagnetic force within a predetermined angle range according to a shake amount caused by hand shake or vibration,
A first shake amount detector for detecting a first shake amount when shaken in the direction of a first axis perpendicular to the optical axis;
A second shake amount detector for detecting a second shake amount when shaken in a direction of a second axis perpendicular to the optical axis and the first axis;
A frame in which a front inner surface perpendicular to the optical axis and a rear inner surface perpendicular to the optical axis are opposed to each other via an inner circumferential surface concentric with the optical axis, in a circular concave shape,
A fixed vertex prism fixed in the frame;
A first rotation apex angle prism is mounted opposite to the fixed apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the first deflection amount. A moving cylinder,
A pair of first back yokes fixed in a circular arc shape symmetrically about the optical axis along the inner peripheral surface intersecting the second axis in the frame, and inner peripheral surfaces of the pair of first back yokes A pair of first drive coils secured to
A pair of second back yokes fixed in a circular arc symmetrically about the optical axis along an outer peripheral surface intersecting the second axis in the first rotating cylinder and the pair of second back yokes A pair of first permanent magnets fixed to the outer peripheral surface of the first permanent magnet and facing the pair of first drive coils with a slight gap therebetween,
At least three or more ring-shaped grooves formed on the front inner surface of the frame body and a ring-shaped groove formed on the front surface of the first rotating cylinder facing the front inner surface are sandwiched, The rotation of the first rotating cylinder is guided while being pressed against the inner surface of the front side by the magnetic attraction action of the pair of first permanent magnets generated between the pair of first back yokes and the pair of second back yokes. A first ball to
A second rotation apex angle prism is attached to face the first rotation apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the second deflection amount. A second rotating cylinder;
A pair of third back yokes fixed in a circular arc shape symmetrically about the optical axis along the inner peripheral surface intersecting the first axis in the frame, and inner peripheral surfaces of the pair of third back yokes A pair of second drive coils fixed to
A pair of fourth back yokes and a pair of fourth back yokes fixed symmetrically around the optical axis along an outer circumferential surface intersecting the first axis in the second rotating cylinder. A pair of second permanent magnets that are fixed to the outer peripheral surface of the first permanent magnet and are opposed to the pair of second drive coils with a slight gap therebetween,
At least three or more ring-shaped grooves formed on the rear inner surface of the frame body and a ring-shaped groove formed on the rear surface facing the rear inner surface of the second rotating cylinder are sandwiched, The second rotating cylinder rotates while being pressed against the inner surface of the rear side by the magnetic attraction action of the pair of second permanent magnets generated between the pair of third back yokes and the pair of fourth back yokes. A second ball for guiding
The first and second rotating cylinders are moved to the light by the electromagnetic forces generated between the first drive coil and the first permanent magnet and between the second drive coil and the second permanent magnet. A shake correction apparatus characterized by rotating around a shaft within a predetermined angle range . A shake correction apparatus that rotates some of the plurality of apex angle prisms around an optical axis by electromagnetic force within a predetermined angle range according to a shake amount caused by hand shake or vibration,
A first shake amount detector for detecting a first shake amount when shaken in the direction of a first axis perpendicular to the optical axis;
A second shake amount detector for detecting a second shake amount when shaken in a direction of a second axis perpendicular to the optical axis and the first axis;
A frame in which a front inner surface perpendicular to the optical axis and a rear inner surface perpendicular to the optical axis are opposed to each other via an inner circumferential surface concentric with the optical axis, in a circular concave shape,
A fixed vertex prism fixed in the frame;
A first rotation apex angle prism is mounted opposite to the fixed apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the first deflection amount. A moving cylinder,
A first ring-shaped back yoke fixed to the inner peripheral surface located on the front inner surface side in the frame body at right angles to the optical axis, and a plurality of first drives fixed on the first ring-shaped back yoke. Coils,
A second ring-shaped back yoke fixed to the outer peripheral surface of the first rotating cylinder perpendicular to the optical axis, and fixed on the second ring-shaped back yoke and slightly with the plurality of first drive coils. A first ring-shaped permanent magnet magnetized with an even number of poles facing each other at an interval;
At least three or more ring-shaped grooves formed on the front inner surface of the frame body and a ring-shaped groove formed on the front surface of the first rotating cylinder facing the front inner surface are sandwiched, The rotation of the first rotating cylinder is guided while being pressed against the inner surface of the front side by the magnetic attraction action of the first ring-shaped permanent magnet generated between the first ring-shaped back yoke and the second ring-shaped back yoke. A first ball to
A second rotation apex angle prism is attached to face the first rotation apex angle prism, and is arranged to be rotatable around the optical axis in the frame according to the second deflection amount. A second rotating cylinder;
A third ring-shaped back yoke fixed to the inner peripheral surface located on the rear inner surface side in the frame body at right angles to the optical axis, and a plurality of second rings fixed on the third ring-shaped back yoke. A drive coil;
A fourth ring-shaped back yoke fixed to the outer peripheral surface of the second rotating cylinder perpendicularly to the optical axis, and fixed on the fourth ring-shaped back yoke and slightly with the plurality of second drive coils. A second ring-shaped permanent magnet magnetized with an even number of poles facing each other at an interval;
At least three or more ring-shaped grooves formed on the rear inner surface of the frame body and a ring-shaped groove formed on the rear surface facing the rear inner surface of the second rotating cylinder are sandwiched, The rotation of the second rotating cylinder while being pressed against the inner surface of the rear side by the magnetic attraction action of the second ring-shaped permanent magnet generated between the third ring-shaped back yoke and the fourth ring-shaped back yoke. A second ball for guiding
The first and second rotating cylinders are moved to the light by the electromagnetic forces generated between the first drive coil and the first permanent magnet and between the second drive coil and the second permanent magnet. A shake correction apparatus characterized by rotating around a shaft within a predetermined angle range. An optical apparatus comprising the shake correction apparatus according to claim 6 or 7 and an optical lens, the optical axes of which are arranged to coincide with each other.

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