JP2017207603A - Optical equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide optical equipment capable of driving a drive part with high precision through a simple constitution.SOLUTION: Optical equipment has: a moving member which faces a base member and moves an optical system in a first direction relatively to the base member; three or more rolling members 20 which are held between the base member and moving member, respectively and move the moving member. The base member has a plurality of first contact parts, coming into contact with the respective rolling members 20, formed along a first direction, and the moving member has a plurality of second contact parts, opposed to the first contact parts respectively and coming into contact with the respective rolling members 20, formed along the first direction. A straight line connecting points, coming into contact with the first contact parts and second contact parts, of the rolling members 20 is inclined to a second direction in view of the first direction, and one of the first and second contact parts are formed at an outer periphery of the base member or moving member.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an optical apparatus having a drive unit.

  Optical devices such as binoculars have a drive device that drives an optical system. In Patent Document 1, an observation apparatus including a drive unit that guides an optical system in the optical axis direction by two balls disposed at positions separated in the optical axis direction and two guide units that engage with the two balls. Is disclosed.

Japanese Patent No. 5284008

  However, in the prior art disclosed in Patent Document 1, two guide portions are provided, and left and right inclined surfaces are formed in each guide portion so as to have a predetermined angle. For this reason, there is a possibility that a deviation or change in the driving direction due to the axial deviation of the two guide portions may occur.

  In view of such a problem, an object of the present invention is to provide an optical apparatus that can drive a drive unit with high accuracy with a simple configuration.

  An optical apparatus according to an aspect of the present invention includes a base member that is restricted from moving in a first direction and a base member that faces the base member in a second direction orthogonal to the first direction. A moving member that moves relative to the base member in the first direction; and at least three rolling members that are sandwiched between the base member and the moving member and move the moving member. The base member is formed with a plurality of first contact portions in contact with the rolling members along the first direction, and the moving member is formed along the first direction. A plurality of second contact portions, each facing one of the first contact portions and in contact with each rolling member, are formed, and are in contact with the first and second contact portions of the rolling member. The straight line connecting the points is the second direction in the first direction view. Inclined with respect to said one of the first and second contact portions, characterized in that it is formed on the outer periphery of the base member or the movable member.

  ADVANTAGE OF THE INVENTION According to this invention, the optical apparatus which can drive a drive part with high precision with a simple structure can be provided.

1 is an external perspective view of an optical apparatus of Example 1. FIG. (Example 1) which is sectional drawing of an optical instrument. FIG. 3 is a sectional view of the optical apparatus shown in FIG. 2 (Example 1). FIG. 3 is an exploded perspective view of a part of the focus drive mechanism when viewed from the object side (Example 1). (Example 1) which is sectional drawing of a guide mechanism. (Example 1) which is a perspective view of the bearing unit of another shape. It is a block diagram of an imaging device provided with the optical apparatus of Example 2 (Example 2). (Example 2) which is the disassembled perspective view which looked at the shake correction system from back. (Example 2) which is the disassembled perspective view which looked at the shake correction system from the front. (Example 2) which is sectional drawing of a guide mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same members are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is an external perspective view of the binoculars (optical apparatus) of the present embodiment. The binoculars have a pair of left and right objective optical systems, a pair of left and right erecting optical systems, and a pair of left and right eyepiece optical systems. The left and right sides correspond to the left and right sides of the binoculars viewing the binoculars. In FIG. 1, the optical axis OL of the left objective optical system (first optical system) and the optical axis OR of the right objective optical system (second optical system) are parallel, and the distance between the optical axes OL and OR is The distance between the optical axis EL of the left eyepiece optical system and the optical axis ER of the right eyepiece optical system is the same. The front cover 25 holds the left and right protective glasses L1L and L1R at the tip. The protective rubber 26 covers the outer sides of the left and right protective glasses L1L and L1R, thereby mitigating the impact on the inside due to dropping or the like. The eyepiece base member 10 and the front cover 25 are integrated by a fixing screw (not shown) and accommodate and protect the left and right optical systems and mechanical structures.

  FIG. 2 is a cross-sectional view of the binoculars in the state of FIG. 1 cut along a plane including both optical axes OL and EL, and shows the left optical system. The objective optical system includes a protective glass L1L and an objective lens L2L. The erecting optical system includes a Polo II type prism L3L. The eyepiece optical system includes an eyepiece lens L4L. The optical axis of the eyepiece lens L4L coincides with the optical axis EL of the eyepiece optical system.

  The front lens barrel 1L holds the objective lens L2L and is suspended from the fixed barrel 2L by an eccentric roller (not shown). The fixed cylinder 2L is screwed to the left end portion of the objective table 3 with screws 4. The front lens barrel 1L is adjusted in parallel eccentricity and tilting with an eccentric roller, and the position of the front lens barrel 1L in the direction orthogonal to the optical axis is determined so that the optical axis of the front lens barrel 1L coincides with the optical axis EL of the eyepiece optical system. .

  The eyepiece tube 5L holds an eyepiece lens L4L. The prism holder 6L holds the Polo II type prism L3L. The eyepiece holder 7L holds the eyepiece tube 5L. The prism holder 6L and the eyepiece holder 7L are integrated with screws or the like so that the Polo II prism L3L and the eyepiece lens L4L have a predetermined positional relationship. The eyepiece rubber 8L is placed on the left eyepiece tube 5L, and the shape of the eyepiece side can be folded back to change the eyepiece position. In order to couple the eyepiece tube 5L and the eyepiece holder 7L, a male helicoid screw is formed on the outer peripheral wall of the eyepiece tube 5L, and a female helicoid screw is formed on the inner peripheral wall of the eyepiece holder 7L. By rotating either the eyepiece tube 5L or the right eyepiece tube (not shown) and moving it back and forth along the optical axis, the left and right diopter can be adjusted. With the above configuration, the left eyepiece unit 9L is configured. The right eyepiece unit 9L is configured with the same configuration.

  The eyepiece base member 10 supports the left and right eyepiece units 9L and 9R so as to be rotatable around the optical axes OL and OR of the left and right objective optical systems, and advances and retracts the left and right objective optical systems along the optical axis to observe the distance. It is the support part of the structure which performs focusing according to. The eyepiece base member 10 is made of metal because it requires high rigidity and accuracy. The eyepiece base member 10 is provided with an opening 10L coaxial with the optical axis OL of the objective optical system. A cylindrical portion 6La provided in the prism holder 6L is rotatably fitted in the opening 10L.

  In the present embodiment, the left optical system has been described, but the right optical system has the same configuration.

  3 is a cross-sectional view of the binoculars in the state of FIG. 2 cut along the broken line of FIG. The left and right interlocking plates 11L and 11R interlock the rotational movements of the cylindrical portions 6La and 6Ra of the prism holders 6L and 6R, respectively. Each of the interlocking plates 11L and 11R includes gear portions 11La and 11Ra and a plurality of arm portions 11Lb and 11Rb that generate a biasing force along the optical axis by being incorporated at predetermined positions. The interlocking plates 11L and 11R are fastened to the prism holders 6L and 6R with screws so that the arm portions 11Lb and 11Rb are urged with the eyepiece base member 10 interposed therebetween. By meshing the gear portions 11La and 11Ra, the rotational movements of the left and right eyepiece units 9L and 9R can be linked. Since the optical axes EL and ER are decentered by a predetermined amount with respect to the optical axes OL and OR by the left and right Polo II prisms, the width of the optical axes EL and ER can be increased by rotating the eyepiece units 9L and 9R. Change. This makes it possible to perform eye width adjustment that matches the distance between the left and right pupils of the observer who uses binoculars and the distance between the optical axes EL and ER.

  FIG. 4 is an exploded perspective view when a part of the focus mechanism (drive unit) is viewed from the object side. FIG. 4A is a view seen from the top surface side, and FIG. 4B is a view seen from the bottom surface side.

  The objective base member 12 is fixed to the eyepiece base member 10 with screws 13 and supports the left and right objective optical systems so as to be able to advance and retract along the optical axis in order to perform focusing according to the observation distance. A focus base (focus support member, moving member) 14 is screwed onto the objective base 3 to which the left and right objective optical systems are fixed so as to be movable back and forth along the optical axis by a bearing unit (guide member) 19 with respect to the objective base member 12. (Not shown). The focus operation dial 16 is coupled with screws (not shown) so as to sandwich the feed screw 15 and the eyepiece base member 10. Therefore, the focus operation dial 16 is restricted from moving in the optical axis direction and can be rotated at a fixed position together with the feed screw 15. The drive nut 17 meshes with the thread portion of the feed screw 15 and is fixed to the focus base 14 with screws 18. By rotating the focus operation dial 16, the drive nut 17 advances and retracts the objective table 3 along the optical axis. The left and right objective optical systems move as a whole as the object stage 3 is advanced and retracted in the direction of the optical axis by the focus operation dial 16, thereby focusing according to the observation distance. The bearing unit 19 includes two balls (rolling members) 20, a retainer (intermediate member) 21, and a bearing plate 22. The retainer 21 is disposed between the balls 20. The positions of the ball 20 and the retainer 21 in the optical axis direction are determined by the bearing plate 22. The ball 20 can roll with respect to the thrust position of the bearing plate 22, and the retainer 21 can rotate.

  FIG. 5 is an enlarged cross-sectional view of the guide mechanism. In this embodiment, the guide mechanism includes the objective base member 12, the focus base 14, and the bearing unit 19. The objective base member 12 is formed with V-shaped grooves 12a and 12b facing each other and extending along the optical axis. V-shaped grooves 14 a and 14 b extending along the optical axis are formed on the outer periphery of the focus table 14 so as to face the V-shaped grooves formed on the objective base member 12. The biasing plate spring (biasing means) 23 is fixed to the objective base member 12 with screws 24, and a space between the opening 12c formed in the objective base member 12 and each V-shaped groove of the objective base member 12 is formed. The sliding surface 14c formed in the space between each V-shaped groove of the focus table 14 is biased. That is, the urging portion that urges the sliding surface 14 c of the urging plate spring 23 is between the V-shaped grooves formed on the objective base member 12 and between the V-shaped grooves formed on the focus table 14. Are arranged. The sliding surface 14c moves along the optical axis while receiving an urging force from the urging plate spring 23, and thus is formed with a surface with good sliding.

  The bearing unit 19 is disposed in a space formed by each V-shaped groove formed on the objective base member 12 and each V-shaped groove formed on the focus table 14. That is, each of the objective base members 12 formed in the direction orthogonal to the optical axis direction (x-axis direction, first direction) and the biasing direction (z-axis direction, second direction) by the biasing leaf spring 23. It is arranged in a space between the V-shaped groove and each V-shaped groove formed in the focus table 14.

  The ball 20 provided on one bearing unit 19 is in point contact with the lower surface (first contact portion) 12a1 of the V-shaped groove 12a and the upper surface (second contact portion) 14a1 of the V-shaped groove 14a. The upper surface 12a2 of 12a and the lower surface 14a2 of the V-shaped groove 14a are not in contact. The ball 20 provided on the other bearing unit 19 makes point contact with the lower surface (first contact portion) 12b1 of the V-shaped groove 12b and the upper surface (second contact portion) 14b1 of the V-shaped groove 14b. The upper surface 12b2 of the groove 12b and the lower surface 14b2 of the V-shaped groove 14b are not in contact with each other. That is, the lower surface 12a1 of the V-shaped groove 12a and the upper surface 14a1 of the V-shaped groove 14a, and the lower surface 12b1 of the V-shaped groove 12b and the upper surface 14b1 of the V-shaped groove 14b are configured as a sandwiching portion that sandwiches the ball 20. Further, the ball 20 is clamped at one point with the objective base member 12 and the focus base 14.

  In this embodiment, the upper surfaces 14a1 and 14b1 of the V-shaped grooves 14a and 14b are urged to the ball 20 by the urging plate spring 23, and the upper surfaces 14a1 and 14b1 of the V-shaped grooves 14a and 14b and the lower surfaces of the V-shaped grooves 12a and 12b. 12a1 and 12b1 contact the ball 20 reliably. Therefore, it is possible to prevent the ball 20 from jumping out from each clamping portion. The cylindrical diameter of the retainer 21 is smaller than the outer diameter of the ball 20 and is usually not in contact with the V-shaped grooves of the objective base member 12 and the focus table 14, but each surface is wide when subjected to an impact. The ball 20 is prevented from being struck on the sliding surface of the V-shaped groove in contact with the V-shaped groove.

  In this embodiment, V-shaped grooves are formed in the objective base member 12 and the focus base 14 in order to configure each clamping portion. However, the present invention is not limited to this as long as the ball 20 can be clamped. . In other words, the objective base member 12 and the focus table 14 are arranged such that a straight line connecting the points where the ball 20 contacts each clamping part is inclined with respect to a direction perpendicular to the biasing direction by the biasing plate spring 23 when viewed in the optical axis direction. The clamping part should just be comprised by the contact part formed in this. For example, only the inclined surface or curved surface facing the ball 20 may be formed on the objective base member 12 and the focus table 14.

  As described above, in this embodiment, in the focus mechanism of binoculars, the objective optical system is driven by rolling the ball 20 to reduce the friction and wear. Can be done. In addition, by inserting a plurality of balls 20 into the holding portions formed by the V-shaped grooves of the objective base member 12 and the focus table 14 on the outer periphery of the focus table 14, the vertical direction (z-axis direction) can be achieved with a simple configuration. ) Positioning and guiding of the focus mechanism can be performed. In addition, with such a configuration, it is possible to perform focus driving with high accuracy with less occurrence or change in the driving direction. Therefore, in this embodiment, it is possible to provide binoculars that can drive the focus mechanism with high accuracy with a simple configuration. Also, by providing a focus mechanism in the space between the left and right optical systems, the space can be used efficiently.

  In this embodiment, the bearing unit 19 is composed of the two balls 20, the retainer 21 and the bearing plate 22. However, as shown in FIG. 6, a plurality of balls 20 having the same diameter may be held. . In this embodiment, the ball 20 is used for positioning in the vertical direction (z-axis direction). However, since at least three or more balls can be positioned, the bearing unit 19 has a total of three balls 20. As long as it has. In this embodiment, the focus mechanism is manually operated from the outside, but the drive source is not limited to this. In this embodiment, the focus base 14 is biased by one biasing means, but the focus base 14 may be biased by a plurality of biasing means. In this case, each urging means is arranged so that the position of the center of gravity of the urging force is between each V-shaped groove formed on the objective base member 12 and between each V-shaped groove formed on the focus table 14. The

  FIG. 7 is a block diagram of an imaging apparatus 100 on which an interchangeable lens that is an example of the optical apparatus of the present invention is mounted. The imaging apparatus 100 includes a camera body 101 and a lens body (interchangeable lens) 103. In this embodiment, the lens body 103 is detachably attached to the camera body 101, but the camera body 101 and the lens body 103 may be integrally formed.

  A camera microcomputer 119 is built in the camera body 101. The release switch 120 is a switch for starting a release operation. The image sensor 110 captures a subject image and outputs an image signal to the camera microcomputer 119.

  A lens microcomputer 111 is built in the lens body 103. The camera microcomputer 119 and the lens microcomputer 111 communicate with each other via a communication contact 102. The lens microcomputer 111 is a state in the lens body 103 (zoom position, focus position, aperture value state, etc.) and information about the lens body 103 (open aperture value, focal length, data necessary for focal length calculation, etc.). Is transmitted to the camera body 101. The lens microcomputer 111 controls a shake correction system (anti-vibration unit) 112, a focus drive system 113, and an aperture drive system 114. The shake correction system 112 includes a shake correction drive system 115 and a lock / unlock drive system 116, and drives the correction lens based on a control signal calculated by the lens microcomputer 111 using an output of a sensor that detects the shake of the apparatus. Correct image blur. The lock / unlock drive system 116 locks the correction lens when image blur correction is not performed, and unlocks the correction lens when image blur correction is performed. The focus drive system 113 performs focusing by driving a lens for focus adjustment based on the command value from the lens microcomputer 111 and the output of the position detection device. Based on the command value from the lens microcomputer 111, the aperture drive system 114 reduces the aperture to a set position or returns it to the open state. The image stabilization switch 117 is a switch that is turned on when performing image blur correction. The A / M switch 118 is a switch used when selecting auto focus or manual focus.

  FIG. 8 is an exploded perspective view of the shake correction system (drive unit) 112 as viewed from the rear. FIG. 9 is an exploded perspective view of the shake correction system 112 as viewed from the front. The base member 121 serves as a positioning reference in a direction (optical axis direction) parallel to the optical axis O of the movable barrel 122. The movable lens barrel (lens holding member, moving member) 122 is configured to hold the movable lens L101 and to move together with the movable lens L101 in a plane perpendicular to the optical axis O (shift and rotation are possible). The However, the moving range of the movable lens barrel 122 is limited by a mechanism described later.

  On the outer periphery of the guide member 123, two first V-shaped grooves 123a are formed along the vertical direction (z-axis direction), and two second V-shaped grooves 123b are formed along the left-right direction (y-axis direction). Yes. The base member 121 is formed with a V-shaped groove 121a facing the first V-shaped groove 123a formed in the guide member 123 along the vertical direction (z-axis direction). The bearing unit (guide member) 124 is disposed in a space surrounded by the V-shaped groove 121a and the first V-shaped groove 123a, and the guide member 123 can be moved relative to the base member 121 only in the vertical direction (z-axis direction). To guide. Since the configuration of the bearing unit 124 is the same as that of the first embodiment, the description thereof is omitted. The movable lens barrel 122 is formed with a V-shaped groove 122a facing the second V-shaped groove 123b formed in the guide member 123 along the left-right direction (y-axis direction). The bearing unit 124 is disposed in a space surrounded by the V-shaped groove 122a and the second V-shaped groove 123b, and guides the movable lens barrel 122 relative to the guide member 123 so as to be relatively movable only in the left-right direction (y-axis direction). With the above configuration, the movable lens barrel 122 is guided so as to be movable relative to the base member 121 in the vertical direction and the horizontal direction.

  The biasing spring (biasing means) 125 is a tension coil spring, and the first end and the second end engage with the engaging portion 121b of the base member 121 and the engaging portion 122b of the movable lens barrel 122, respectively. The engaging portions 121b and 122b are provided at substantially equal angular positions on the outer periphery of each component. The biasing spring 125 biases the movable barrel 122 so as to sandwich the guide member 123 with respect to the base member 121, that is, in the forward direction (x-axis positive direction).

  The electric board 126 is fixed to the base member 121 with screws 127 and drives and controls the shake correction system 112. The flexible board 128 connects the electric element mounted on the shake correction system 112 and the electric board 126. The drive coils 129 </ b> P and 129 </ b> Y are attached to the movable lens barrel 122 by adhesion, and power is supplied from the electric board 126 through the flexible board 128. The drive coils 129P and 129Y generate a driving force in the vertical direction (z-axis direction) and a driving force in the left-right direction (y-axis direction), respectively.

  The drive magnet 130, the back yoke 131, and the counter yoke 132 are provided for each of the drive coils 129P and 129Y. The drive magnet 130 is magnetized so that the N pole and the S pole are provided in the front-rear direction (x-axis direction), and is arranged along the z-axis so that different magnetic pole faces face the drive coil 129P. It arrange | positions along a y-axis so that a different magnetic pole surface may face coil 129Y. The drive magnet 130 and the back yoke 131 are bonded and fixed so as to sandwich the base member 121. The opposing yoke 132 is fixed to the base member 121 with a fixing screw 135. The opposing yoke 132 forms an air layer for generating a driving force by the driving magnet 130 and the driving coils 129P and 129Y. By the drive coils 129P and 129Y, the drive magnet 130, the rear yoke 131, and the opposing yoke 132, the movable barrel 122 is moved in the vertical direction (z-axis direction) and the horizontal direction (x-axis direction) in the yz plane orthogonal to the optical axis O. An actuator to shift to is configured.

The light emitting diode (LED) 133P generates position information of the movable barrel 122 in the z-axis direction, and the light emitting diode (LED) 133Y generates position information of the movable barrel 122 in the y-axis direction. Each of the light emitting diodes 133P and 133Y is mounted on the flexible board 128, and power is supplied from the electric board 126 through the flexible board 128. The light emitting diodes 133P and 133Y are fixed to the movable lens barrel 122 together with the flexible substrate 128. The position detection element (PSD) 134P is disposed so as to face the light emitting diode 133P, and outputs a signal corresponding to the shift of the movable lens barrel 122 in the z-axis direction. The position detection element 134Y is disposed so as to face the light emitting diode 133Y, and outputs a signal corresponding to the shift of the movable barrel 122 in the y-axis direction. The position detection elements 134P and 134Y are mounted on the electric board 126. Light emitted from the light emitting diodes 133P and 133Y passes through the slit 122c formed in the movable lens barrel 122 and the slit 121c formed in the base member 121 to become light having a predetermined width, and the position detection elements 134P and 134Y. Are detected by the light receiving unit. Based on outputs from the position detection elements 134P and 134Y, position information of the movable lens barrel 122 in the z-axis direction and the y-axis direction can be obtained.
In the present embodiment, the position of the movable lens barrel 122 is detected by combining the LED and the PSD, but the position may be detected using other position detection means.

  FIG. 10 is a cross-sectional view of the guide mechanism. FIG. 10A shows a guide mechanism between the base member 121 and the guide member 123. FIG. 10B shows a guide mechanism between the guide member 123 and the movable lens barrel 122.

  As shown in FIG. 10A, the ball 124 a of the bearing unit 124 includes a front surface (first contact portion) 121 a 1 of the V-shaped groove 121 a of the base member 121 and a rear surface of the first V-shaped groove 123 a of the guide member 123 ( Point contact is made with the second contact portion) 123a1. Therefore, the ball 124 a guides the guide member 123 in the vertical direction (z-axis direction) with respect to the base member 121. Similarly to the first embodiment, the ball 124a does not contact the rear surface 121a2 of the V-shaped groove 121a of the base member 121 and the front surface 123a2 of the first V-shaped groove 123a of the guide member. In FIG. 10A, the base member 121 functions as a base member, and the guide member 123 functions as a moving member.

  As shown in FIG. 10B, the ball 124 a of the bearing unit 124 includes the front surface (first contact portion) 123 b 1 of the second V-shaped groove 123 b of the guide member 123 and the rear surface of the V-shaped groove 122 a of the movable lens barrel 122. (Second contact portion) Point contact with 122a1. Therefore, the ball 124 a guides the movable lens barrel 122 in the left-right direction (y-axis direction) with respect to the guide member 123. Further, the ball 124a is not in contact with the rear surface 123b2 of the second V-shaped groove 123b of the guide member 123 and the front surface 122a2 of the V-shaped groove 122a of the movable barrel. In FIG. 10B, the guide member 123 functions as a base member, and the movable lens barrel 122 functions as a moving member.

  Therefore, in the present embodiment, the front surface 121a1 of the V-shaped groove 121a and the rear surface 123a1 of the first V-shaped groove 123a, and the front surface 123b1 of the second V-shaped groove 123b and the rear surface 122a1 of the V-shaped groove 122a serve as a sandwiching portion for sandwiching the ball 124. Composed. In addition, the ball 124 is sandwiched by the base member 121, the movable lens barrel 122, and the guide member 123 at one point.

  In this embodiment, V-shaped grooves are formed in the base member 121, the movable lens barrel 122, and the guide member 123 in order to configure each clamping portion. However, the present invention is applicable if the ball 124a can be clamped. Is not limited to this. That is, the base member 121 and the movable mirror are arranged such that a straight line connecting the points where the balls 124a contact each clamping portion is inclined with respect to a direction orthogonal to the urging direction of the urging spring 125 in the moving direction of the movable lens L101. The clamping part should just be comprised by the contact part formed in the pipe | tube 122 and the guide member 123. FIG. For example, only the inclined surfaces and curved surfaces that are in contact with the ball 124 a may be formed on the base member 121, the movable lens barrel 122, and the guide member 123.

  In this embodiment, the movable barrel 122 is biased by the biasing spring 125 so as to sandwich the guide member 123 with respect to the base member 121. Therefore, the ball 124a reliably contacts the front surface 121a1 of the V-shaped groove 121a and the rear surface 123a1 of the first V-shaped groove 123a, and the front surface 123b1 of the second V-shaped groove 123b and the rear surface 122a1 of the V-shaped groove 122a. Popping out is prevented. As in the first embodiment, the diameter of the retainer cylinder provided in the bearing unit 124 is smaller than the outer diameter of the ball 124a. For this reason, the retainer normally does not contact the V-shaped grooves formed in each member, but when subjected to an impact, the retainer contacts each V-shaped groove on a wide surface and the ball 124a contacts the sliding surface of the V-shaped groove. Prevent dents.

  As described above, in this embodiment, shake correction with less friction and wear can be performed by driving the vibration isolation unit of the interchangeable lens by rolling the ball 124a. Further, by inserting a plurality of balls 124a into the respective clamping portions formed by the V-shaped grooves of the base member 121 and the guide member 123 on the outer periphery of the guide member 123, the occurrence or change of the driving direction is prevented. The anti-vibration unit can be driven with high accuracy in the left-right direction. In addition, on the outer periphery of the guide member 123, a plurality of balls 124a are inserted into the holding portions formed by the V-shaped grooves of the movable lens barrel 122 and the guide member 123, thereby generating or changing the driving direction. Therefore, it is possible to drive the vibration isolation unit with high accuracy in the vertical direction. Therefore, in this embodiment, it is possible to provide an interchangeable lens that can drive the image stabilizing unit with high accuracy with a simple configuration and an imaging device including the interchangeable lens.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

12 Objective base member (base member)
12a1 bottom surface (first contact portion)
14 Focus stand (moving member)
14a1 upper surface (second contact portion)
20 balls (rolling member)
121 Base member 121a1 front surface (first contact portion)
122 Movable lens barrel (moving member)
122a1 rear surface (second contact portion)
123 Guide member (moving member, base member)
123a1 rear surface (second contact portion)
123b1 front surface (first contact portion)
124a Ball (rolling member)

Claims (13)

A base member restricted in movement in the first direction;
A moving member that faces the base member in a second direction orthogonal to the first direction and moves the optical system relative to the base member in the first direction;
Each having at least three or more rolling members that are sandwiched between the base member and the moving member and move the moving member;
The base member is formed with a plurality of first contact portions in contact with the rolling members along the first direction,
A plurality of second contact portions are formed on the moving member, each facing one of the first contact portions along the first direction, and contacting each rolling member,
A straight line connecting the points of contact of the first and second contact portions of the rolling member is inclined with respect to the second direction in the first direction view,
Either one of the first and second contact portions is formed on an outer periphery of the base member or the moving member.   The optical apparatus according to claim 1, wherein the first and second contact portions are in contact with each rolling member at one point.   The optical apparatus according to claim 1, wherein the first and second contact portions are slopes inclined with respect to the second direction.   The optical apparatus according to claim 1, further comprising a biasing unit that biases the moving member in the second direction.   The optical apparatus according to claim 4, wherein the urging unit is disposed between the first contact portions and between the second contact portions. A plurality of biasing means for biasing the moving member in the second direction;
The urging means is arranged so that the position of the center of gravity of the urging force is between the first contact portions and between the second contact portions. The optical apparatus according to item 1.   The two first contact portions of the first contact portions are opposed to each other in a direction orthogonal to the first and second directions. The optical instrument described.   The said rolling member is clamped by the said 1st and 2nd contact part in the direction orthogonal to the said 1st and 2nd direction, The any one of Claim 1 to 7 characterized by the above-mentioned. Optical equipment.   A guide member comprising at least one or more rolling members and further disposed between the first and second contact portions in a direction orthogonal to the first and second directions. Item 9. The optical apparatus according to any one of Items 1 to 8.   The optical apparatus according to claim 1, further comprising an intermediate member disposed between at least two of the rolling members.   The optical apparatus according to claim 1, wherein the optical apparatus is binoculars. It further has a pair of left and right optical systems,
The first and second contact portions and the rolling member are disposed between an optical axis of each of the left and right optical systems and two surfaces orthogonal to the optical axis. 11. The optical apparatus according to 11.   The optical apparatus according to claim 1, wherein the optical apparatus is an interchangeable lens.