JP2012168398A - Image blur correction device and optical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the thickness in an optical axis direction.SOLUTION: An image blur correction device includes a movable member 103 holding blur correction means 101, a guide member 104 supported to be movable in a first direction orthogonal to an optical axis with respect to a fixed member 102 and supporting the movable member to make the movable member movable in a second direction orthogonal to the optical axis and different from the first direction, a first rolling member 105 guiding the guide member by rolling with respect to the fixed member, a second rolling member guiding the movable member by rolling with respect to the guide member, first and second energizing means generating a force for bringing the first and second rolling members into rollable contact with the guide member, and drive means moving the movable member. The first rolling member and the second rolling member are arranged on the same surface side of the guide member.

Description

  The present invention relates to an image shake correction apparatus and an optical apparatus mounted on an optical apparatus.

  First, a general vibration isolation system will be described with reference to FIG. FIG. 4 assumes a system that suppresses image blur caused by camera vertical shake 461p and camera horizontal shake 461y in the direction of the arrow 461 shown in the figure.

  In FIG. 4, reference numeral 462 denotes a lens barrel having a photographing optical system, and reference numerals 463p and 463y denote angular displacement detection devices for detecting camera vertical shake angular displacement and camera horizontal shake angular displacement, respectively. It is indicated by 464y. Reference numerals 465p and 465y denote arithmetic circuits which calculate signals from the angular displacement detection devices 463p and 463y and convert them into drive target signals for the image blur correction device 400. Then, the image blur correction device 400 is driven by this signal to ensure stability on the image plane 469. Reference numerals 467p and 467y denote driving units of the image blur correction apparatus 400, and reference numerals 468p and 468y denote correction lens position detection sensors.

  Next, a conventional image blur correction apparatus will be described with reference to FIGS. FIG. 5 is an exploded perspective view showing the structure of a conventional image shake correction apparatus, and FIG. 6 is a schematic view of the image shake correction apparatus after assembling FIG. 5 cut in parallel to the optical axis.

  In general, an image shake correction apparatus includes a movable member that holds a correction lens that is independent of a direction in which the camera is shaken horizontally (hereinafter referred to as a yaw direction) and a direction in which the camera is shaken in a vertical direction (hereinafter referred to as a pitch direction). It is necessary to support such that it can move without friction without causing movement in the optical axis direction.

  This conventional image blur correction apparatus includes a correction lens 301, a fixed base plate 302, a movable barrel 303, a guide member 304, a first rolling ball 305, first rolling receiving members 306 and 307, a second rolling. It has a ball 308 and second rolling receiving members 309 and 310. In addition, an urging member 312 is provided. The rolling balls 305 and 308 are preferably made of a hard material in order to reduce rolling resistance. In addition, the fixed ground plate 302 and the movable lens barrel 303 provided with positioning parts for various parts have a complicated shape, and thus are most suitably manufactured by resin molding.

  On the other hand, when the load on the movable lens barrel 303 increases, such as when the weight of the correction lens 301 is increased, a large pressure is generated at locations where the balls contact the rolling balls 305 and 308. In the structure in which the mold resin and the rolling balls 305 and 308 are brought into contact with each other, there is a possibility that the pressure is deformed and worn. Therefore, it is necessary to attach rolling receiving members 306, 307, 309, and 310 for receiving the rolling balls 305 and 308 to the movable lens barrel 303 and the fixed base plate 302 that are mold members, respectively. Further, the rolling receiving members 306, 307, 309, and 310 are made of a hard material such as stainless steel, and are suitably manufactured by press molding.

  On the other hand, the image shake correction apparatus is attached to a lens barrel member (not shown) that supports another lens group and an imaging member such as a film or a CCD by an attachment portion provided on the fixed base plate 302. Therefore, by making the position and inclination in the optical axis direction between the fixed base plate 302 and the lens barrel member (not shown) accurate, the positional relationship with other lens groups and imaging members can be performed with high accuracy.

  In Patent Document 1, a guide member having a ball holding portion extending in the yaw direction and the pitch direction is provided between the fixed member and the movable member that holds the lens. As a result, the movement of the movable member in the rotational direction is restricted, so that the movable member can be accurately moved by a desired amount in the yaw direction and the pitch direction.

Japanese Patent Laid-Open No. 11-007051

  However, in the conventional image blur correction apparatus disclosed in FIGS. 5 and 6, the first rolling receiving members 306 and 307, the first rolling ball 305, and the guide member are disposed between the fixed base plate 302 and the correction lens 301. 304, the 2nd rolling ball 308, the 2nd rolling receiving member 309,310, and many parts are interposed. Therefore, the conventional image blur correction apparatus disclosed in FIGS. 5 and 6 and the image blur correction apparatus disclosed in Patent Document 1 have a problem that it is difficult to reduce the thickness of the entire apparatus because components overlap in the optical axis direction. It was.

(Object of invention)
An object of the present invention is to provide an image shake correction apparatus and an optical apparatus in which the thickness in the optical axis direction is reduced.

  In order to achieve the above object, an image shake correction apparatus of the present invention includes a fixed member, a movable member that holds a shake correction unit and is movable in a direction orthogonal to the optical axis, and an optical axis with respect to the fixed member. A guide member that is movably supported in a first orthogonal direction and that supports the movable member in a second direction perpendicular to the optical axis and different from the first direction; and the guide member, A first rolling member that guides the fixed member by rolling in the first direction and a second rolling member that guides the movable member by rolling in the second direction relative to the guide member. A first urging means for generating a force for bringing the first rolling member into contact with the guide member so that the first rolling member can roll; and the second rolling member can be rolled on the guide member. A second urging means for generating a contact force, and the movable member in the first direction and the And a driving means for moving the second direction, the first rolling member and the second rolling member is for being disposed on the same side of the guide member.

  According to the present invention, the thickness in the optical axis direction can be reduced.

1 is an exploded perspective view showing a component configuration of an image shake correction apparatus that is an embodiment of the present invention. FIG. It is a front view which shows the state after the assembly of an Example. It is a schematic diagram which shows the state cut | disconnected in parallel with the optical axis of an Example. It is a perspective view which shows a general vibration isolating system. It is a disassembled perspective view which shows the structure of a prior art example. It is a schematic diagram which shows the state cut | disconnected in parallel with the optical axis of a prior art example.

  The mode for carrying out the present invention is as described in the following examples.

  With reference to FIGS. 1 to 3, the configuration of an image blur correction apparatus 100 according to the present embodiment will be described.

  An image shake correction apparatus 100 according to the present exemplary embodiment includes a correction lens 101 that is a shake correction unit, a fixed base plate 102 that is a fixed member, a movable barrel 103 that is a movable member, and a guide member 104. The first rolling ball 105 (1051, 1052, 1053), the first rolling receiving member 106, the second rolling ball 107 (1071, 1072, 1073), the second rolling receiving member 108, A first biasing magnet 109 and a second biasing magnet 110 are included. Further, the first yoke 111, the second yoke 112, the pitch magnet 113, the yaw magnet 114, the pitch coil 115, and the yaw coil 116 are provided. Although the first and second rolling balls 105 and 107 are used as the first and second rolling members, a cylindrical rolling member may be used.

  By fixing the first rolling receiving member 106, the first biasing magnet 109, the first yoke 111, the second yoke 112, the pitch magnet 113, and the yaw magnet 114 to the fixed base plate 102, the fixed unit is Constitute.

  Further, by fixing the correction lens 101, the second rolling receiving member 108, the second urging magnet 110, the pitch coil 115, and the yaw coil 116 to the movable barrel 103, a barrel unit is configured.

  FIG. 1 is an exploded perspective view showing a component structure of the present embodiment. FIG. 2 is a front view of the image blur correction apparatus 100 after assembly. In FIG. 2, the guide member 104 and the second yoke 112 are not shown for the sake of explanation. FIG. 3 is a schematic diagram in which the image blur correction apparatus 100 is cut in parallel to the optical axis.

  The correction lens 101 is a lens that forms part of an imaging optical system (not shown), and is a shake optical element that decenters the optical axis. By moving in the direction orthogonal to the optical axis, the image formed by the imaging optical system can be moved. Thus, when camera shake is detected, stability on the image plane can be ensured by the above-described method.

  In the present embodiment, the correction lens 101 is used as a shake correction unit. However, the same effect can be expected by moving an image sensor such as a CCD or C-MOS sensor with respect to the photographing lens.

  The fixed ground plate (fixing member) 102 is formed in a substantially disk shape. The movable lens barrel 103 can be arranged with an opening at the center.

  Further, as shown in FIG. 1, the fixed ground plate 102 has mounting holes 1021 that can fix three mounting rings on the outer peripheral side surface portion. Using this hole, it is fixed to a lens barrel that fixes another lens group (for example, an imaging optical system). That is, the mounting hole 1021 is a reference position for the image blur correction apparatus 100.

  The fixed ground plate 102 has a first rolling ball arrangement groove 1022 that passes therethrough. The first rolling ball arrangement groove 1022 is provided in the same number (three in this embodiment) as the number of the first rolling balls 105 (1051, 1052, 1053), and the first rolling balls are disposed therein. 1051, 1052, and 1053 can be accommodated so that they can roll. The size of the opening of the first rolling ball arrangement groove 1022 is larger than the movable range of the first rolling ball 105 and has a long hole shape that is long in the yaw direction. However, this invention is not limited to this shape, For example, a rectangular shape may be sufficient.

  The fixed ground plate 102 has holes for fitting with the first urging magnet 109, the pitch magnet 113, and the yaw magnet 114, and each component can be positioned.

  The movable lens barrel 103 can hold the correction lens 101 in the central opening. The movable lens barrel 103 is supported so as to be movable in a direction perpendicular to the optical axis with respect to the fixed base plate 102 by a method described later.

  The movable lens barrel 103 has three second rolling ball arrangement grooves 1031 that pass therethrough. The second rolling ball arrangement groove 1031 can accommodate the second rolling ball 107 (1071, 1072, 1073) in a rollable manner therein, and the size of the groove is the second rolling ball arrangement groove 1031. It is larger than the movable range of the moving ball 107.

  The first rolling ball arrangement groove 1022 constitutes a first rolling member arrangement groove, the second rolling ball arrangement groove 1031 constitutes a second rolling member arrangement groove, and their heights are It is smaller than the diameter of the first and second rolling members.

  In addition, the movable lens barrel 103 has a hole for fitting with the second urging magnet 110, and the second urging magnet 110 can be positioned. The movable lens barrel 103 can hold the pitch coil 115 and the yaw coil 116. In addition, the movable lens barrel 103 includes a position detection sensor (not shown), and can sequentially measure the displacement amounts in the pitch direction and the yaw direction with respect to the fixed base plate 102. A non-contact type position detection sensor is suitable, and a known optical sensor, magnetic sensor, or the like can be used.

  The guide member 104 is made of a highly wear-resistant material such as stainless steel. Accordingly, even if a hard material is used for the first and second rolling balls 105 and 107, the contact portion is not scraped and can be used for a long time. In this embodiment, the yoke of the first urging magnet 109 and the second urging magnet 110 can also be used by using a ferromagnetic material such as martensitic stainless steel.

  The guide member 104 is supported with respect to the fixed base plate 102 so as to be movable in the pitch direction (first direction). The movable lens barrel 103 is supported so as to be movable in the yaw direction (second direction).

  Here, the pitch direction and the yaw direction are orthogonal to each other. Further, the pitch direction and the yaw direction are directions orthogonal to the optical axis. Thereby, the movable lens barrel 103 is supported so as to be movable with respect to the fixed base plate 102 without rotating in a direction orthogonal to the optical axis.

  The guide member 104 has two first rolling guide portions 1041. The first rolling guide portion 1041 has a V-shaped cross section with respect to the yaw direction. As a result, the first rolling balls 1051 and 1052 can be supported so that they can roll without play in the pitch direction while contacting at two points.

  Further, two second rolling guide portions 1042 are provided on the same surface as the surface on which the first rolling guide portion 1041 is provided. The second rolling guide portion 1042 has a V-shaped cross section with respect to the pitch direction. As a result, the second rolling balls 1071 and 1072 can be supported so that they can roll without play in the yaw direction while touching at two points.

  In this embodiment, the two first rolling guide portions 1041 and the two second rolling guide portions 1042 are provided in the same part, respectively, so that the moving directions to be supported are made highly accurate. Can do.

  The first rolling balls (first rolling members) 1051 to 1053 are formed of a material having high hardness such as stainless steel or ceramic in order to reduce rolling resistance and to make with high processing accuracy. The first rolling balls 1051 to 1053 guide the guide member 104 by rolling in the pitch direction with respect to the fixed base plate 102.

  The first rolling receiving member 106 is made of a highly wear-resistant material such as stainless steel. Thus, even if a hard material is used for the rolling ball 105, the contact portion is not scraped and can be used for a long time. In this embodiment, the yoke of the first urging magnet 109 can also be used by using a ferromagnetic material such as martensitic stainless steel.

  The first rolling receiving member 106 comes into contact with the fixed base plate 102 and is screwed. The first guide portions 1061 and 1062 are provided on the surface in contact with the fixed base plate 102. The first guide portions 1061 and 1062 have a V-shaped cross section perpendicular to the yaw direction. As a result, the first rolling balls 1051 and 1052 can be supported so that they can roll without play in the pitch direction while contacting at two points.

  The second rolling balls (second rolling members) 1071 to 1073 are made of a material having high hardness in order to reduce rolling resistance and to make with high processing accuracy. The second rolling balls 1071 to 1073 guide the movable barrel 103 to the guide member 104 by rolling in the yaw direction.

  The second rolling receiving member 108 is preferably made of a metal having excellent wear resistance, such as stainless steel. Thereby, even if it uses a hard material for a rolling ball, it can endure long-term use, without a contact part being shaved. In this embodiment, the yoke of the second urging magnet 110 can also be used by using a ferromagnetic material such as martensitic stainless steel.

  The second rolling receiving member 108 is fixed in contact with the movable barrel 103. The second guide portions 1081 and 1082 are provided on the surface in contact with the movable lens barrel 103. The second guide portions 1081 and 1082 have a V-shaped cross section perpendicular to the pitch direction. Thus, the second rolling balls 1071 and 1072 can be supported so as to roll in the yaw direction while contacting at two points.

  The first biasing magnet 109 is a magnet that is magnetized in the optical axis direction, and is fixed to the first rolling receiving member 106. At this time, by facing the guide member 104 with a predetermined gap, a suction force in the optical axis direction can be applied between the guide member 104 and the first rolling receiving member 106. Thus, the first rolling ball 105 is always held between the first rolling receiving member 106 and the guide member 104. That is, the first urging magnet 109, the first rolling receiving member 106, which is a ferromagnetic material, and the guide member 104 form a magnetic circuit, thereby realizing the first urging means of the present invention. In the present embodiment, two first urging magnets 109 are used. The resultant force is inside a triangle connecting a plurality (three) of first rolling balls 1051, 1052, 1053. As a result, the first biasing magnet 109 is prevented from coming into contact with the guide member 104.

  The magnitude of the resultant force of the first urging means is larger than the sum of the weights of the movable lens barrel 103 and the guide member 104, and preferably about three times the sum of the weights. Thus, even if an inertial force in an arbitrary direction is applied to the movable lens barrel 103 due to an impact or the like, the resultant force of the first urging magnet 109 and the resultant force of the inertial force connect the first rolling balls 105. Can be prevented from going outside.

  The second urging magnet 110 is a magnet that is magnetized in the optical axis direction, and is fixed to the second rolling receiving member 108. At this time, the suction force in the optical axis direction can be applied between the guide member 104 and the second rolling receiving member 108 by facing the guide member 104 with a predetermined gap. Thus, the second rolling ball 107 is always held between the second rolling receiving member 108 and the guide member 104. That is, a magnetic circuit is formed by the second urging magnet 110, the second rolling receiving member 108, which is a ferromagnetic material, and the guide member 104, thereby realizing the second urging means of the present invention. As a method of configuring the first and second urging means, an elastic member such as a spring or a method using an electrostatic force may be used in addition to using a magnetic force as in the present embodiment.

  In the present embodiment, three second urging magnets 110 are used. The resultant force is inside a triangle connecting a plurality (three) of second rolling balls 1071, 1072, 1073. This prevents the second urging magnet 110 from coming into contact with the guide member 104.

  The magnitude of the resultant force of the second urging means is larger than the weight of the movable lens barrel 103, and preferably about three times the weight. Thus, even if an inertial force in an arbitrary direction is applied to the movable lens barrel 103 due to an impact or the like, the sum of the urging force and the inertial force by the second urging magnet 110 ties the second rolling ball 107. It can prevent going out of the triangle.

  Pitch magnet 113, pitch coil 115, first yoke 111, and second yoke 112 constitute a pitch direction actuator (first driving means).

  The yaw magnet 114, the yaw coil 116, the first yoke 111, and the second yoke 112 constitute a yaw direction actuator (second driving means).

  The pitch magnet 113 generates a magnetic field that generates thrust in the pitch direction when electric power is supplied to the pitch coil 115.

  The yaw magnet 116 generates a magnetic field that generates a thrust in the yaw direction when electric power is supplied to the yaw coil 116.

  The first yoke 111 and the second yoke 112 serve as yokes for the pitch direction actuator and the yaw direction actuator, reduce the magnetic resistance of the respective magnets, and increase the efficiency of the actuator.

  Each actuator is a known electromagnetic actuator. In the present invention, the type of actuator is not limited, and a known actuator that moves the movable barrel 103 relative to the fixed base plate 102 in two directions orthogonal to the optical axis can be used. Specifically, an electrostatic actuator, a piezoelectric actuator, a giant magnetostrictive actuator, or the like may be used. Further, two 1-degree-of-freedom type actuators may be used as in this embodiment, or one 2-degree-of-freedom type actuator may be used.

  In the present embodiment, the first rolling ball 105 and the second rolling ball 107 are arranged side by side on the same surface side of the guide member 104. In the present embodiment, the first rolling ball 105 and the second rolling ball 107 have the same diameter. Therefore, the 1st rolling receiving member 106 and the 2nd rolling receiving member 108 are arrange | positioned in the same surface.

  The first rolling balls 1051, 1052, 1053 are in contact with the guide member 104 so as to be able to roll. The first rolling balls 1051 and 1052 are regulated by the first rolling guide portion 1041 provided on the guide member 104 and the first guide portions 1061 and 1062 provided on the first rolling receiving member 106. The Then, the guide member 104 is supported so as to be movable only in the pitch direction with respect to the fixed base plate 102. The position of the guide member 104 is determined stably in the direction of the optical axis by being supported by the three balls of the first rolling balls 1051, 1052, and 1053.

  The second rolling balls 1071, 1072, 1073 are in contact with the guide member 104 so as to be able to roll. The second rolling balls 1071 and 1072 are regulated by the second rolling guide portion 1042 provided on the guide member 104 and the second guide portions 1081 and 1082 provided on the second rolling receiving member 108. The The movable lens barrel 103 is supported so as to be movable only in the yaw direction with respect to the guide member 104. The movable lens barrel 103 is supported by three balls, ie, the second rolling balls 1071, 1072, and 1073, so that the position thereof is stably determined in the optical axis direction. Thereby, the movable lens barrel 103 is supported so as to be movable with respect to the fixed base plate 102 without rotating in the direction orthogonal to the optical axis. Then, the correction lens 101 can be moved to a predetermined position by generating a predetermined thrust in the pitch actuator and the yaw actuator.

  The effect of this embodiment will be described by comparing FIG. 3 which is a schematic diagram of this embodiment with FIG. 6 which is a schematic diagram of a conventional image blur correction apparatus.

  With the arrangement as in the present embodiment, the thickness of the image shake correction apparatus in the optical axis direction can be reduced. This will be described in detail below.

  Conventionally, as shown in FIG. 6, the thickness of the image blur correction device is (the thickness of the fixed ground plate 302 + the thickness of the first rolling receiving member 306 + the diameter of the first rolling ball 305 + The thickness of the guide member 304 + the diameter of the second rolling ball 308 + the thickness of the second rolling receiving member 310 + the thickness of the movable lens barrel 303) is required.

  However, in this embodiment, as shown in FIG. 3, the first rolling ball 105 and the second rolling ball 107 are arranged on the same surface side of the guide member 104. And it is possible to arrange | position in parallel in an optical axis direction, and to arrange | position the 1st rolling receiving member 106 and the 2nd rolling receiving member 108 in parallel in an optical axis direction. Further, the movable lens barrel 103 and the fixed base plate 102 can be disposed between the guide member 104 and the first and second rolling receiving members 106 and 108. Therefore, the distance from the lower end of the apparatus to the guide member 104 is (the thickness of the first and second rolling receiving members 106 and 108 + the diameter of the first and second rolling balls 105 and 107 + the thickness of the guide member 104). It can be configured if there is only a minute. Compared to the conventional case, this is equivalent to (the thickness of the fixed ground plate 302 + the diameter of the second rolling ball 308 + the thickness of the second rolling receiving member 310 + the thickness of the movable lens barrel 303). The shake correction apparatus can be thin in the optical axis direction. In the present embodiment, the first rolling ball 105 and the second rolling ball 107 have the same diameter, so that the first and second rolling receiving members 106 and 108 are arranged on the same surface. In this configuration, the thickness in the optical axis direction is minimized. The present invention is not limited to this, and the diameters of the first and second rolling balls 105 and 107 may be changed. This increases the thickness of the entire apparatus in the optical axis direction, but allows the first and second rolling receiving members 106 and 108 to be arranged on different surfaces, which is advantageous for reducing the diameter of the entire apparatus. is there.

  Further, by adopting such a configuration, the position of the image shake correction apparatus in the optical axis direction can be determined with high accuracy.

  As shown in FIG. 6, the first rolling receiving members 306 and 307 of the conventional image blur correction device are in contact with the first rolling ball 305 on the surface opposite to the surface to which the fixed ground plate 302 is attached. . The guide member 304 is in contact with the second rolling ball 308 on the surface opposite to the surface in contact with the first rolling ball 305. The second rolling receiving members 309 and 310 fix the movable lens barrel 303 on the opposite side of the surface in contact with the second rolling ball 308.

  Therefore, when the thickness of any one of the guide member 304, the first rolling receiving members 306 and 307, and the second rolling receiving members 309 and 310 varies, the position of the lens (for example, tilts obliquely, etc.) ) Will change. This is because the first and second rolling receiving members 306 and 307 are desirably manufactured by press working that is excellent in mass productivity, but generally, in press working, the plate thickness may vary depending on the lot.

  On the other hand, the first rolling receiving member 106 of the image shake correcting apparatus of the present embodiment shown in FIG. 3 is in contact with the first rolling ball 105 on the same surface side as the fixed ground plate 102 is attached. Further, the guide member 104 is in contact with the second rolling ball 107 on the same surface side as that in contact with the first rolling ball 105. The second rolling receiving member 108 is in contact with the movable lens barrel 103 on the same side as that in contact with the second rolling ball 107.

  Therefore, even if the plate thickness of any of the first rolling receiving member 106, the guide member 104, and the second rolling receiving member 108 varies, the overall dimensions only vary, and the reference position with respect to other optical members. The positional relationship between the fixed ground plate 102 and the correction lens 101 is not affected. Therefore, it is possible to adopt a configuration with fewer error factors than the conventional image blur correction apparatus, and it is possible to stabilize the optical performance of the image blur correction apparatus.

  As described above, in the above embodiment, the fixed base plate 102 and the movable lens barrel 103 are disposed between the guide member 104 and the first and second rolling receiving members 106 and 108. As a result, the thinnest configuration in the optical axis direction was achieved. However, the image blur correction apparatus proposed in the present invention is not limited to this form.

  In order to achieve the above configuration, the thickness of at least a part of the movable lens barrel 103 and the fixed base plate 102 in the optical axis direction needs to be smaller than the diameter of the rolling balls 105 and 107. Therefore, the diameter of the rolling balls 105 and 107 may be increased, and the strength may be insufficient due to excessive thinning of the movable barrel 103 and the fixed base plate 102.

  In order to prevent this, the movable lens barrel 103 may be disposed on the opposite side of the surface where the second rolling receiving member 108 contacts the second rolling ball 107. Thereby, the thickness of the movable lens barrel 103 can be made larger than the diameter of the second rolling ball 107, and a decrease in strength can be avoided. Further, the fixed ground plate 102 may be disposed on the opposite side of the surface where the first rolling receiving member 106 contacts the first rolling ball 105. Thereby, the thickness of the fixed ground plate 102 can be made larger than the diameter of the first rolling ball 105, and the strength of the fixed ground plate 102 can be avoided from being lowered.

  Although this configuration is thicker in the direction of the optical axis than in the above embodiment, the occurrence of the above problem can be avoided. In this case, by reducing the diameters of the first and second rolling balls 105 and 107, an increase in size in the optical axis direction can be suppressed.

  In this embodiment, the image shake correction apparatus has been described. However, the image shake correction apparatus is mounted on an imaging apparatus such as a video camera, a digital camera, or a silver salt still camera, or an optical apparatus including an observation apparatus such as a binocular, a telescope, or a field scope. Is possible. Therefore, an optical apparatus having the image shake correction apparatus of this embodiment also constitutes one aspect of the present invention.

DESCRIPTION OF SYMBOLS 101 Correction lens 102 Fixed base plate 103 Movable lens barrel 104 Guide member 105 1st rolling ball 106 1st rolling receiving member 107 2nd rolling ball 108 2nd rolling receiving member 109 1st biasing magnet 110 Second biasing magnet

Claims (8)

A fixing member;
A movable member that holds the shake correction means and is movable in a direction perpendicular to the optical axis;
A guide member that is supported so as to be movable in a first direction perpendicular to the optical axis with respect to the fixed member, and that supports the movable member so as to be movable in a second direction perpendicular to the optical axis and different from the first direction. When,
A first rolling member that guides the guide member by rolling in the first direction with respect to the fixed member;
A second rolling member for guiding the movable member by rolling in the second direction with respect to the guide member;
First urging means for generating a force for bringing the first rolling member into contact with the guide member in a rollable manner;
Second urging means for generating a force for bringing the second rolling member into contact with the guide member in a rollable manner;
Drive means for moving the movable member in the first direction and the second direction;
The image blur correction device according to claim 1, wherein the first rolling member and the second rolling member are disposed on the same surface side of the guide member.   The image blur correction device according to claim 1, wherein the first rolling member and the second rolling member are arranged in parallel in the optical axis direction. A first rolling receiving member fixed to the fixing member;
A second rolling receiving member fixed to the fixing member,
The first urging means sandwiches the first rolling member between the guide member and the first rolling receiving member,
The second urging means sandwiches the second rolling member between the guide member and the second rolling receiving member,
The image blur correction apparatus according to claim 1, wherein the first rolling receiving member and the second rolling receiving member are arranged in parallel in the optical axis direction. The fixing member is provided with a first rolling member arrangement groove in which the first rolling member is accommodated so as to be movable in the first direction;
The movable member is provided with a second rolling member arrangement groove in which the second rolling member is movably accommodated in the second direction,
The height of the said 1st rolling member arrangement | positioning groove | channel and the 2nd rolling member arrangement | positioning groove | channel is smaller than the diameter of the said 1st and 2nd rolling member, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. The image blur correction device according to claim 1. The first rolling member contacts the guide member at two points,
5. The image blur correction device according to claim 1, wherein the second rolling member is in contact with the guide member at two points. 6. The resultant force of the first urging means passes through an in-plane formed by connecting a plurality of the first rolling members, and is greater than the combined weight of the shake correcting means, the movable member, and the guide member,
The resultant force of the second urging means passes through an in-plane formed by connecting a plurality of the second rolling members, and is larger than the weight of the shake correction means and the movable member. 6. The image blur correction device according to any one of items 5 to 5. The first and second rolling bearing members are ferromagnetic;
The first biasing means is realized by a magnetic force acting between the first rolling receiving member and the guide member,
The image blur correction apparatus according to claim 3, wherein the second urging unit is realized by a magnetic force acting between the second rolling receiving member and the guide member.   An optical apparatus comprising the image blur correction device according to claim 1.

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