JP2010039083A - Optical vibration-proof device and optical equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve the miniaturization of an optical vibration-proof device by adequately arranging wiring members. <P>SOLUTION: An optical vibration-proof device is provided with: a lens-holding member 1002 which holds a vibration-proof lens 104; a base member 1001 which supports the lens-holding member so that it may be moved in a shifting direction orthogonally crossing the direction of an optical axis; a spring member 1008a whose one end is attached to the base member and whose other end is attached to the lens-holding member and which is arranged with inclination to the direction of the optical axis and to the shifting direction; coils 1003p and 1003y which constitute an actuator which drives the lens-holding member in the shifting direction to the base member and are attached to the lens-holding member; and a wiring member 1013 (1013c) connected to the coils. The wiring member is connected to the coils through the area surrounded by the spring member and the part facing the spring member in the lens-holding member. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical image stabilizer that reduces image blur and an optical apparatus including the same, and more particularly to electrical wiring in the optical image stabilizer.

  An optical image stabilizer that shifts an image stabilizer lens (hereinafter referred to as a shift lens) in a direction orthogonal to the optical axis direction is disclosed in Patent Document 1.

  This optical image stabilizer includes a lens holding member that holds a shift lens, and a base member that supports the lens holding member so as to be movable in a shift direction orthogonal to the optical axis direction of the shift lens. In addition, both ends of a spring member arranged to be inclined with respect to the optical axis direction and the shift direction are attached to a plurality of locations in the circumferential direction of the lens holding member and the base member. These spring members urge the lens holding member toward the neutral position in the shift direction and urge the lens holding member toward the base member in the optical axis direction.

  A plurality of balls are arranged between the lens holding member and the base member, and the balls guide the lens holding member in the shift direction with respect to the base member.

Further, an actuator for driving the lens holding member in the shift direction with respect to the base member is constituted by a coil attached to the lens holding member and a magnet attached to the base member.
JP-A-10-319465

  Although not specified in Patent Document 1, power supply to the coil of the actuator is generally performed by a wiring member such as a flexible substrate or a lead wire. In many cases, a position sensor for detecting a shift position of the lens holding member with respect to the base member is mounted on the flexible substrate.

  However, with the miniaturization of the optical image stabilizer, there is a problem of how to arrange the wiring members. In other words, if the wiring member is not properly disposed, there is a risk that miniaturization of the optical image stabilizer is hindered.

  The present invention provides an optical anti-vibration device and an optical apparatus provided with the same, in which wiring members can be appropriately arranged to achieve miniaturization.

  An optical image stabilizer as one aspect of the present invention includes a lens holding member that holds an anti-vibration lens, a base member that supports the lens holding member so as to be movable in a shift direction orthogonal to the optical axis direction, One end is attached to the base member and the other end is attached to the lens holding member, and the spring member is arranged to be inclined with respect to the optical axis direction and the shift direction, and the actuator that drives the lens holding member in the shift direction with respect to the base member And a coil attached to the lens holding member, and a wiring member connected to the coil. The wiring member is connected to the coil through a region surrounded by the spring member and a portion of the lens holding member facing the spring member.

  Note that the optical apparatus having the optical image stabilizer also constitutes another aspect of the present invention.

  According to the present invention, it is possible to realize further downsizing of the optical image stabilizer by effectively utilizing the region that is originally a dead space between the spring member and the extending portion as the region through which the wiring member is passed. it can.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows the configuration of an interchangeable lens as an optical apparatus provided with the optical image stabilization device that is Embodiment 1 of the present invention, and a digital single-lens reflex camera equipped with the interchangeable lens.

  In FIG. 1, reference numeral 1 denotes a digital single lens reflex camera (hereinafter simply referred to as a camera), and reference numeral 2 denotes an interchangeable lens attached to the camera 1.

  In the camera 1, the main mirror 3 moves forward and backward with respect to the optical path of the light beam from the interchangeable lens 2 together with a sub mirror 4 described later. As shown in the figure, the main mirror 3 disposed in the optical path reflects a part of the light beam from the interchangeable lens 2 and guides it to a finder optical system described later, and transmits the remaining light beam.

  A sub-mirror 4 is disposed behind the main mirror 3. The sub mirror 4 reflects the light beam transmitted through the main mirror 3 and guides it to the focus detection unit 5.

  The focus detection unit 5 includes an AF sensor, and detects the focus state of the interchangeable lens 2 by a so-called phase difference detection method.

  Reference numeral 6 denotes an image sensor constituted by a CCD sensor or a CMOS sensor. A subject image is formed on the light receiving surface (imaging surface) of the image sensor 6 by the light flux from the interchangeable lens 2. The imaging element 6 photoelectrically converts the subject image and outputs an imaging signal.

  The finder optical system includes a pentaprism 7 and an eyepiece lens 8, and enables observation of a subject image formed by a light beam reflected by the main mirror 3.

  Reference numeral 9 denotes a display panel constituted by an LCD or the like, which displays an image and various other information since it is generated based on an imaging signal by a signal processing unit (not shown).

  The interchangeable lens 2 accommodates an imaging optical system including a first lens unit 101, a second lens unit 102, an aperture unit 41, a third lens unit 103, a fourth lens unit 104, and a fifth lens unit 105 in order from the subject side. is doing. AXL is the optical axis of the imaging optical system.

  The aperture unit 41 is disposed closer to the subject than the third lens unit 103, and enters the camera 1 through the imaging optical system by increasing or decreasing the diameter of the aperture opening formed by the plurality of aperture blades 41a. Adjust the light intensity.

  The second lens unit 102 moves in the direction in which the optical axis AXL extends (hereinafter referred to as the optical axis direction) and performs focus adjustment. The first to fifth lens units 101 to 105 move in the optical axis direction and perform zooming.

  The fourth lens unit 104 is a vibration-proof lens (shift lens), and corrects (reduces) image blur by moving in a direction orthogonal to the optical axis direction.

  Reference numeral 21 denotes a fixed cylinder that is a base member of the interchangeable lens 2, and rotatably holds a focus ring 30 that is operated to move the second lens unit 102 in the optical axis direction. A mount member 43 is attached to the rear end of the fixed cylinder 21. Furthermore, an angular velocity sensor (a shake sensor) such as a gyro sensor for detecting a shake in the pitch direction (vertical direction) and a yaw direction (left and right direction) of the interchangeable lens 2 is attached to the fixed cylinder 21.

  Reference numeral 22 denotes a guide cylinder, which is fixed to the fixed cylinder 21 with screws. The guide tube 22 is formed with first to third straight grooves (not shown) extending in the optical axis direction. The first to third straight grooves are formed by connecting the first straight tube 24 and the third lens unit 103, respectively. The third lens barrel 38 to be held and the fourth lens barrel 39 to hold the fourth lens unit 104 are guided in the optical axis direction. In addition, a cam follower (not shown) that engages with the first cam cylinder 23 is attached to the guide cylinder 22.

  The first cam cylinder 23 is provided with a zoom key (not shown) that engages a rectilinear groove (not shown) of a zoom operation ring 29 that is rotated by a photographer to perform zooming. The rotation of the zoom operation ring 29 is transmitted to the first cam cylinder 23 via the zoom key. As a result, the first cam cylinder 23 moves in the optical axis direction while rotating, and zooming is performed.

  The first cam cylinder 23 is formed with first to fourth cam grooves 23a, 23b, 23c, and 23d.

  A cam follower (not shown) provided in the first rectilinear cylinder 24 engages with the first cam groove 23 a of the first cam cylinder 23 and the first rectilinear groove of the guide cylinder 22. A cam follower (not shown) provided in the third lens unit 103 engages with the second cam groove 23 b of the first cam cylinder 23 and the second rectilinear groove of the guide cylinder 22. A cam follower (not shown) provided in the fourth lens unit engages with the third cam groove 23 c of the first cam cylinder 23 and the third rectilinear groove of the guide cylinder 22.

  Further, the fourth cam groove 23 d of the first cam cylinder 23 is engaged with the cam follower provided in the guide cylinder 22.

  A cam follower (not shown) that engages a cam groove 28 a formed in the focus cam cylinder 28 and a rectilinear groove formed in the second cam cylinder 25 is attached to the first cam cylinder 23.

  The first rectilinear cylinder 24 is formed with a rectilinear groove (not shown) and a cam groove 24a. A cam follower (not shown) provided in the second rectilinear cylinder 26 is engaged with the rectilinear groove of the first rectilinear cylinder 24, thereby guiding the second rectilinear cylinder 26 in the optical axis direction. The cam follower provided in the first cam cylinder 23 is engaged with the cam groove 24a of the first rectilinear cylinder 24 with a predetermined clearance. An intermediate cylinder 27 is fixed to the first rectilinear cylinder 24.

  Reference numeral 25 denotes a second cam cylinder in which a rectilinear groove (not shown) and a cam groove 25a are formed. Since the above-described cam follower (not shown) provided in the first cam cylinder 23 is engaged with the rectilinear groove of the second cam cylinder 25, the first cam cylinder 23 and the second cam cylinder 25 are integrated. Rotate to. Further, a cam follower (not shown) provided in the second rectilinear cylinder 26 is engaged with the cam groove 25 a of the second cam cylinder 25 and the aforementioned rectilinear groove of the first rectilinear cylinder 24. Thereby, the second cam cylinder 25 moves in the optical axis direction while rotating.

  A front frame 31 to which accessories such as a filter and a hood are attached is attached to the front end of the second rectilinear cylinder 26. Further, the second rectilinear barrel 26 is engaged with a cam follower (not shown) provided in the first barrel 36 holding the first lens unit 101, and the position of the first barrel 36 in the optical axis direction. A cam groove 26a for adjusting the angle is formed.

  A ring plate 34 is attached to the inner periphery of the front end of the intermediate cylinder 27 to prevent intrusion of dust from between the intermediate cylinder 27 and the second rectilinear cylinder 26.

  The focus cam cylinder 28 is formed with a rectilinear groove that engages with a focus key (not shown) attached to the focus ring 30. Thereby, the rotation of the focus ring 30 is transmitted to the focus cam cylinder 28, and the focus cam cylinder 28 moves in the optical axis direction while rotating. Since the second lens barrel 37 that holds the second lens unit 102 is fixed to the focus cam barrel 28, manual focusing is performed by rotating the focus ring 30 by the photographer.

  Although not shown in detail, a focus drive unit that rotationally drives the focus ring 30 is provided in a region indicated by 44 in the drawing. The focus drive unit rotates the focus ring 30 according to the signal from the camera 1. Thereby, autofocus is performed.

  Further, when the focus cam cylinder 28 rotates, the first cam cylinder 23 moves in the optical axis direction while rotating.

  The third lens barrel 38 has a cam follower (not shown) that engages with the second cam groove 23b of the first cam cylinder 23 and the second rectilinear groove of the guide cylinder 22 described above. An aperture unit 41 is attached to a portion of the third lens barrel 38 on the subject side. Further, the third lens barrel 38 is provided with an arm portion (not shown) connected to the fifth lens barrel 40. Thereby, the third lens barrel 38 and the fifth lens barrel 40 are integrally moved in the optical axis direction.

  The fourth lens barrel 39 has a cam follower (not shown) that engages with the third cam groove 23 c of the first cam cylinder 23 and the third rectilinear groove of the guide cylinder 22 described above. The fourth lens barrel 39 is a base member of the optical image stabilizer 42.

  In the interchangeable lens 2 and the camera 1 configured as described above, when a release button (not shown) provided on the camera 1 is operated, the exposure of the image sensor 6 and the obtained image are obtained through autofocus and photometry operations. Recording is performed.

  2 and 3 show the configuration of the optical image stabilizer 42. Reference numeral 1001 denotes a shift base (base member) corresponding to the fourth lens barrel 39 shown in FIG. The shift base 1001 has spring mounting portions 1001a, 1001b, and 1001c to which one ends of the spring members 1008a, 1008b, and 1008c are attached (hooked).

  The shift base 1001 includes cam follower attachment portions 1001d, 1001e, and 1001f to which cam followers (not shown) that engage with the third cam groove 23c of the first cam cylinder 23 and the third rectilinear groove of the guide cylinder 22 are attached. Have.

  Furthermore, magnets 1004p and 1004y, first yokes 1006p and 1006y, first ball seats 1010a, 1010b and 1010c, and damper members 1014p and 1014y are attached to the shift base 1001.

  Note that the component with “p” means that it is a component for correcting image blur caused by rotational shake in the pitch direction of the interchangeable lens 2. In addition, the component with “y” means that it is a component for correcting image blur caused by rotational shake of the interchangeable lens 2 in the yaw direction. The component with “p” and the component with “y” are arranged at positions that are 90 degrees out of phase with each other when viewed in the optical axis direction.

  Reference numeral 1002 denotes a shift lens barrel as a lens holding member that holds the fourth lens unit 104, and is arranged so that a portion on the subject side (hereinafter referred to as the front side) projects forward from the shift base 1001. That is, the front portion of the shift barrel 1002 protrudes forward of the shift base 1001, and the rear portion of the shift barrel 1002 is accommodated on the inner periphery of the shift base 1001.

  The shift barrel 1002 includes spring mounting portions 1002a, 1002b, and 1002c to which the other ends of the spring members 1008a, 1008b, and 1008c are attached (hooked). The shift barrel 1002 is held by a shift base 1001 via spring members 1008a, 1008b, and 1008c so as to be movable in a direction orthogonal to the optical axis direction (also the direction in which the optical axis of the fourth lens unit 104 extends). .

  In the following description, a direction orthogonal to the optical axis direction is referred to as a shift direction, and shifting in the shift direction is referred to as shifting.

  In addition, coils 1003p and 1003y, position detection magnets 1005p and 1005y, second ball seats 1011a, 1011b, and 1011c, and a light shielding sheet 1012 are attached to the shift barrel 1002.

  Reference numerals 1015p and 1015y denote position sensors constituted by Hall elements, which are fixed to a shift barrel 1002 side (lens holding member side) surface (hereinafter referred to as a front surface) of the shift base 1001 via a flexible substrate 1013 described later. . The position sensor 1015p, 1015y detects the change in the magnetic field generated by the shift of the position detection magnets 1005p, 1005y together with the shift lens barrel 1002, thereby calculating the shift amount of the shift lens barrel 1002, that is, the shift position. .

  The first yokes 1006p and 1006y are fixed to the front surface of the shift base 1001 with screws. Magnets 1004p and 1004y are attracted and fixed to the front surfaces of the first yokes 1006p and 1006y by a magnetic force, respectively.

  Reference numeral 1007 denotes a second yoke, which is provided for the purpose of reducing leakage of magnetic flux generated by the magnets 1004p and 1004y. The second yoke 1007 is fixed to the stopper 1016 and the shift base 1001 with screws. Accordingly, the coils 1003p and 1003y are arranged between the second yoke 1007 and the first yokes 1006p and 1006y (and the magnets 1004p and 1004y). The magnet 1004p and the coil 1003p constitute an actuator that drives the shift barrel 1002 in the pitch direction, and the magnet 1004y and the coil 1003y constitute an actuator that drives the shift barrel 1002 in the yaw direction.

  In this embodiment, coil springs are used as the spring members 1008a, 1008b, and 1008c. When viewed in the optical axis direction, one end (outer end) of the spring members 1008a, 1008b, and 1008c is hooked on spring mounting portions 1001a, 1001b, and 1001c provided at three circumferentially equal intervals in the shift base 1001. Further, the other ends (inner ends) of the spring members 1008a, 1008b, and 1008c are attached to spring attachment portions 1002a, 1002b, and 1002c provided to protrude forward at three circumferentially spaced intervals in the shift barrel 1002. It is caught.

  The spring members 1008a, 1008b, and 1008c are arranged in different phases from the coils 1003p and 1003y and the magnets 1004p and 1004y when viewed in the optical axis direction.

  The other end of each spring member attached to the shift lens barrel 1002 is positioned in front of one end attached to the shift base 1001. That is, each spring member is disposed so as to be inclined with respect to the optical axis direction and the shift direction. As a result, the shift barrel 1002 has a shift in the optical axis direction as well as an urging force toward a neutral position in the shift direction (a position where the optical axis of the fourth lens unit 104 coincides with the optical axis AXL of the imaging optical system). An urging force toward the base 1001 side acts.

  The biasing force toward the shift base 1001 is set so that the shift barrel 1002 does not move away from the shift base 1001 in the optical axis direction even when a certain amount of impact is applied to the interchangeable lens 2. Further, the biasing force in the shift direction is such that the shift lens barrel 1002 is not displaced from the neutral position due to the weight of the shift lens barrel 1002 or disturbance applied to the interchangeable lens 2 in a state where no power is supplied to the coils 1003p and 1003y. Is set.

  Reference numerals 1009a, 1009b, and 1009c are balls that are held between the first ball seats 1010a, 1010b, and 1010c and the second ball seats 1011a, 1011b, and 1011c by the urging force toward the shift base 1001 described above. . Guide of the shift barrel 1002 in the shift direction with respect to the shift base 1001 is performed by rolling the balls 1009a, 1009b, and 1009c.

  The first ball seats 1010 a, 1010 b, and 1010 c are made of a material having higher rigidity than the shift base 1001 and are attached to the shift base 1001. Each first ball seat prevents the shift base 1001 from being scratched or recessed on the contact surface with each ball.

  The second ball seats 1011 a, 1011 b, and 1011 c are made of a material having higher rigidity than the shift barrel 1002 and are attached to the shift barrel 1002. Each second ball seat prevents the contact surface with each ball in the shift barrel 1002 from being scratched or dented.

  In this embodiment, each ball and each ball seat are arranged at the same phase as the spring members 1008a, 1008b, 1008c in the optical axis direction.

  The light shielding sheet 1012 is provided for the purpose of preventing unnecessary light from reaching the imaging surface, and is adhered and fixed to the shift lens barrel 1002.

  The flexible printed circuit board (wiring member) 1013 supplies power to the coils 1003p and 1003y from an electric circuit board (not shown) attached to the fixed cylinder 21, and transmits a signal between the electric circuit board and the position sensors 1015p and 1015y. Has a function to perform.

  The flexible printed circuit board 1013 is provided with sensor mounting portions 1013a and 1013b provided with lands for mounting the position sensors 1015p and 1015y by soldering. In addition, the flexible printed board 1013 is provided with coil connection portions 1013c and 1013d that are branched and extended with respect to the sensor mounting portions 1013a and 1013b and are connected to the coils 1003p and 1003y.

  Instead of the flexible printed board 1013, other wiring members such as lead wires may be used.

  The damper members 1014p and 1014y are provided so as to generate viscous resistance during shift driving.

  The stopper 1016 has a role of preventing the movement of the shift barrel 1002 toward the front side (the side away from the shift base 1001). As described above, the stopper 1016 is fixed to the shift base 1001 with screws with the second yoke 1007 interposed therebetween.

  A CPU (not shown) on the electric circuit board calculates a shake displacement by integrating signals from shake sensors (angular velocity sensors) for the pitch direction and the yaw direction, and shift mirrors so as to cancel image shake due to the shake displacement. A target shift amount in the pitch direction and yaw direction of the cylinder 1002 is calculated. Then, the CPU energizes the coils 1003p and 1003y from the electric circuit board via the flexible printed board 1013. Accordingly, the shift barrel 1002 is shifted in the pitch direction and the yaw direction by the thrust generated by the action of the magnetic flux generated in the coils 1003p and 1003y and the magnetic flux of the magnets 1004p and 1004y.

  At this time, the output signals from the position sensors 1015p and 1015y are transmitted to the CPU via the flexible printed circuit board 1013, so that the CPU shifts the shift amount in the pitch direction and the yaw direction of the shift barrel 1002 to the target shift amount. It can be determined whether it has been reached. Thus, the CPU controls the energization of the coils 1003p and 1003y, that is, the drive of the shift barrel 1002, so that the shift amount of the shift barrel 1002 reaches the target shift amount.

  FIG. 4 shows a positional relationship among the shift base 1001, the shift barrel 1002, the spring member 1008a, and the flexible printed board 1013 (coil connection portion 1013c) when viewed from the shift direction. The positional relationship among the shift base 1001, the shift lens barrel 1002, the spring member 1008b, and the flexible printed board 1013 (coil connection portion 1013d) is the same.

  As described above, the spring member 1008a is disposed such that its longitudinal direction (spring axis direction) is inclined with respect to the optical axis direction and the shift direction.

  In FIG. 4, reference numeral 1002d denotes an extending portion provided on the outer side in the radial direction from the lens holding frame portion (lens holding portion) 1002e that holds the fourth lens unit 104 in the shift barrel 1002. The extending portion 1002d is formed to extend in the shift direction between the spring member 1008a and the shift base 1001 in the optical axis direction. In this embodiment, the extension portion 1002d is provided with the second ball seat 1011a described above on the surface of the shift base 1001 and is provided as a guide portion that is guided in the shift direction with respect to the shift base 1001 by the ball 1009a. ing.

  However, the extending part 1002d is not necessarily provided as a guide part.

  The coil connecting portion 1013c of the flexible printed circuit board 1013 passes through the region R surrounded by the spring member 1008a and the portion of the shift lens barrel 1002 facing the spring member 1008a in the optical axis direction and the shift direction to the coil 1003p. It is connected. The “portion facing the spring member 1008a in the optical axis direction and the shift direction in the shift barrel 1002” here are a surface on the spring member 1008a side in the extension portion 1002d and an outer peripheral surface in the lens holding frame portion 1002e.

  The coil connection portion 1013c is attached to the front end surface (upper end surface in the drawing) of the protrusion formed on the innermost side (position close to the lens holding portion) of the extension portion 1002d with a double-sided tape. In this way, the coil connection portion 1013c is supported by the shift barrel 1002.

  In FIG. 4, a point A indicates a position where the spring mounting portion 1001a of the shift base 1001 and one end of the spring member 1008a attached thereto are in contact with each other. Point B indicates a position where the spring mounting portion 1002a of the shift barrel 1002 and the other end of the spring member 1008a attached thereto are in contact with each other. A point C is a point obtained by projecting the point B onto a plane passing through the point A and orthogonal to the optical axis direction.

  And the coil connection part 1013c of the flexible printed circuit board 1013 is connected to the coil 1003p through the inside of a triangle (right triangle) region R composed of points A, B and C.

  By adopting the arrangement method of the coil connecting portion 1013c as described above, the flexible printed circuit board 1013 can be efficiently arranged with respect to the shift barrel 1002 by effectively using the region R that originally becomes a dead space. .

  In particular, in this embodiment, position sensors 1015p and 1015y fixed to the front surface of the shift base 1001 are mounted on the flexible printed circuit board 1013. For this reason, it is easier to route the coil connection portion 1013c up to the coil 1003p when the coil connection portion 1013c is placed along the front surface of the shift barrel 1002.

  In this case, the coil connection portion 1013c can be attached to the surface on the inner side (the lens holding frame 1002e side) of the spring attachment portion 1002a in the shift barrel 1002. However, in such an arrangement, it is necessary to make the length of the spring mounting portion 1002a (the amount of protrusion to the front side) larger than the length shown in FIG. 4 by a length corresponding to the width of the coil connection portion 1013c. Increasing the length of the spring mounting portion 1002a not only increases the thickness of the optical anti-vibration device in the optical axis direction, leading to an increase in the size of the device, but also the inclination of the spring member 1008a with respect to the shift direction becomes too large. It becomes difficult to ensure the required biasing force in the direction. Alternatively, when the arrangement of the spring mounting portions 1002a and 1001a is shifted to the outer diameter side by a length corresponding to the width of the coil connection portion 1013c so as not to increase the inclination of the spring member 1008a, the outer diameter of the optical image stabilizer is reduced. This increases the size of the apparatus.

  Therefore, it is appropriate to dispose the coil connecting portion 1013c so as to pass the region R described above from the viewpoints of handling the coil connecting portion 1013c, downsizing the optical vibration isolator, and securing the urging force by the spring member 1008a. .

  In this embodiment, the spring mounting portion 1002a of the shift barrel 1002 is formed so as to overlap the coil connecting portion 1013c when viewed in the optical axis direction. This prevents the flexible printed circuit board 1013 from interfering with the spring member 1008a when the flexible printed circuit board 1013 floats from the shift lens barrel 1002.

  FIG. 5 shows a second embodiment of the present invention. FIG. 5 shows the positional relationship among the shift base 1001, the shift barrel 1002, the spring member 1008a, and the flexible printed board 1013 (coil connection portion 1013c) when viewed from the shift direction. The positional relationship among the shift base 1001, the shift lens barrel 1002, the spring member 1008b, and the flexible printed board 1013 (coil connection portion 1013d) is the same.

  Further, the basic configuration of the present embodiment is the same as that of the first embodiment, and the same reference numerals as those of the first embodiment are assigned to the components common to the first embodiment in the present embodiment.

  Also in this embodiment, the spring member 1008a is arranged so that the longitudinal direction (spring axis direction) is inclined with respect to the optical axis direction and the shift direction.

  Also in this embodiment, the coil connection portion 1013c passes through the region R surrounded by the spring member 1008a and the portion of the shift lens barrel 1002 facing the spring member 1008a in the optical axis direction and the shift direction. The “portion facing the spring member 1008a in the optical axis direction and the shift direction in the shift barrel 1002” here are a surface on the spring member 1008a side in the extension portion 1002d and an outer peripheral surface in the lens holding frame portion 1002e. The region R is also a triangular region formed by the points A, B, and C shown in FIG.

  However, in this embodiment, the coil connection portion 1013c is attached to the outer peripheral surface of the lens holding frame portion 1002e of the shift barrel 1002 in a direction rotated 90 degrees with respect to the direction shown in FIG.

  Also in this embodiment, the coil connection portion 1013c is appropriately arranged with respect to the shift lens barrel 1002 from the viewpoint of handling the coil connection portion 1013c, downsizing the optical vibration isolator, and securing the urging force by the spring member 1008a. Yes.

  Each embodiment described above is only a representative example, and various modifications and changes can be made to each embodiment when the present invention is implemented.

  In each of the above embodiments, the interchangeable lens of the interchangeable lens digital single lens reflex camera has been described. However, the present invention can also be applied to other optical devices such as a digital camera and a video camera on the lens integrated side.

1 is a cross-sectional view illustrating a configuration of an interchangeable lens and a digital single-lens reflex camera that are Embodiment 1 of the present invention. 1 is an exploded perspective view of an optical image stabilizer in Embodiment 1. FIG. 1 is a perspective view of an optical image stabilizer in Embodiment 1. FIG. Sectional drawing explaining arrangement | positioning of the flexible printed circuit board in Example 1. FIG. Sectional drawing explaining arrangement | positioning of the flexible printed circuit board in Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera 2 Interchangeable lens 101 1st lens unit 102 2nd lens unit 103 3rd lens unit 104 4th lens unit 105 5th lens unit 21 Fixed cylinder 22 Guide cylinder 23 1st cam cylinder 24 1st straight advance cylinder 25 2nd cam Tube 26 Second rectilinear tube 27 Intermediate tube 28 Focus cam tube 29 Zoom operation ring 30 Focus ring 36 First lens barrel 37 Second lens barrel 38 Third lens barrel 39 Fourth lens barrel 40 Fifth group lens barrel 41 Aperture unit 42 Optical vibration isolator 1001 Shift base 1002 Shift lens barrel 1003p, 1003y Coil 1004p, 1004y Magnet 1005p, 1005y Position detection magnet 1006p, 1006y First yoke 1007 Second yoke 1008a, 1008b, 1008c Spring member 1009a, 100 9b, 1009c Ball 1013 Flexible printed circuit board 1015p, 1015y Position sensor

Claims (4)

A lens holding member for holding an anti-vibration lens;
A base member that supports the lens holding member so as to be movable in a shift direction orthogonal to the optical axis direction;
One end is attached to the base member, the other end is attached to the lens holding member, and the spring member is disposed to be inclined with respect to the optical axis direction and the shift direction,
An actuator for driving the lens holding member in the shift direction with respect to the base member, and a coil attached to the lens holding member;
A wiring member connected to the coil,
The optical vibration isolator, wherein the wiring member is connected to the coil through a region surrounded by the spring member and a portion of the lens holding member facing the spring member. The lens holding member has a guide portion guided in the shift direction with respect to the base member,
The optical image stabilizer according to claim 1, wherein a portion of the lens holding member facing the spring member includes the guide portion. The wiring member is a flexible substrate, and the flexible substrate has a sensor mounting portion on which a position sensor for detecting a position of the lens holding member with respect to the base member is mounted;
The sensor mounting portion is fixed to a surface of the base member on the lens holding member side,
A portion of the flexible substrate that is branched with respect to the sensor mounting portion is connected to the coil through a region surrounded by the spring member and a portion of the lens holding member that faces the spring member. The optical vibration isolator according to claim 1 or 2. An optical apparatus comprising the optical image stabilizer according to any one of claims 1 to 3.