JP2018072761A - Optical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical instrument capable of being reduced in size in a radial direction.SOLUTION: The optical instrument comprises: a correction optical system for correcting a blur of an optical image; a magnet and a coil for moving the correction optical system to a direction orthogonal to an optical axis of the correction optical system; a movable member capable of holding one of the magnet and the coil and the correction optical system, and moving to a direction orthogonal to the optical axis; a stationary member holding the other of the magnet and the coil and stationary to a direction orthogonal to the optical axis; and a flexible printed circuit board including a straight line part extending in an optical axis direction of the correction optical system. The other and the straight line part overlap each other when viewed in an optical axis direction of the correction optical system.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an optical apparatus including a correction optical system for correcting image blur due to camera shake.

  2. Description of the Related Art Conventionally, an optical apparatus such as a digital video camera uses an image blur correction apparatus that detects a camera shake of a photographer and cancels an image blur (image blur). In this image blur correction apparatus, a moving frame holding a lens unit for correcting image blur (hereinafter referred to as a shift lens) is driven in a pitch direction (vertical direction) and a yaw direction (lateral direction) in a plane perpendicular to the optical axis. Yes. As an optical apparatus provided with such an image blur correction device, an optical apparatus described in Patent Document 1 is known. Patent Document 1 discloses an optical apparatus that can be reduced in size in the radial direction by setting a flexible printed circuit board extending from a moving frame that holds a shift lens at a position that is shifted from the moving frame in the optical axis direction. doing.

JP 2000-192899 A

  However, in the optical device described in Patent Document 1, a part of the flexible printed circuit board is provided outside the magnet provided on the fixing member, so that the optical device can be further downsized in the radial direction. It was difficult.

  Therefore, an object of the present invention is to provide an optical apparatus that can be reduced in size in the radial direction as compared with the prior art.

In order to achieve the above object, the optical apparatus of the present invention comprises:
A correction optical system for correcting blur of the optical image;
A magnet and a coil for moving the correction optical system in a direction perpendicular to the optical axis of the correction optical system;
A movable member that holds one of the magnet and the coil and the correction optical system and is movable in a direction perpendicular to the optical axis;
A holding member that holds the other of the magnet and the coil and is immovable in a direction perpendicular to the optical axis;
A flexible printed circuit board having a linear portion extending in the optical axis direction of the correction optical system,
In the optical axis direction view of the correction optical system, the other and the straight line portion overlap,
It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the optical apparatus which can be reduced in size to radial direction rather than before.

Video camera external view (A) Lens barrel front perspective view, (b) Lens barrel front view, (c) Lens barrel right side view A-A cross section Rear view of image blur correction device (A) Fixed group front side exploded perspective view, (b) Fixed group rear view, (c) Fixed group front view (A) Movable group front side exploded perspective view, (b) Movable group front view Assembly diagram of fixed group and movable group (A) Image blur correction device rear view, (b) BB sectional view, (c) CC sectional view Enlarged view D Schematic diagram showing the positional relationship of the movable group and the output of the Hall element Schematic diagram showing the positional relationship between the flexible printed circuit board and the electromagnetic actuator

  Preferred embodiments of the present invention will be illustratively described below with reference to the drawings. However, the relative arrangement of the component parts described in this embodiment should be appropriately changed according to the configuration of the apparatus to which the present invention is applied and various conditions. That is, the present invention is not limited to the embodiments described later, and various modifications and changes can be made within the scope of the gist.

[First embodiment]
(Description of overall configuration of digital video camera)
Hereinafter, with reference to FIG. 1, the main body structure of the 1st Embodiment of this invention is demonstrated.

  FIG. 1 is a perspective view of a digital video camera (optical apparatus) according to the present embodiment as viewed from the front side (object side). As shown in FIG. 1, the digital video camera of this embodiment includes a dial operation unit 101 on the front side of the camera body 100 and a viewfinder 102 on the back side of the camera body 100. On the upper surface of the camera main body 100, a slide switch 103, a zoom operation switch 104, an accessory shoe 105, and a mode changeover switch 106 for switching the power ON / OFF and the reproduction mode of the captured moving image are provided.

  A display unit 107 is supported on the right side surface portion of the camera body 100 as viewed from the front side so as to be opened and closed. Here, the camera body 100 corresponds to an example of the apparatus body of the present invention. A microphone 108, a microphone 109, an operation ring 110, a lens hood attachment member 111, a decoration portion 112, a lens specification notation member 113, a focus unit window portion 114, and an exterior member 115 are disposed in a portion exposed to the appearance. The microphone 108 and the microphone 109 are disposed on the upper surface side of the camera body 100 and in the vicinity of the operation ring 110.

(Description of lens barrel configuration)
The lens barrel configuration of the first embodiment of the present invention will be described below with reference to FIGS. 2 (a) to 2 (c) and FIG.

  2A is a front perspective view of the lens barrel 200 according to the present embodiment, FIG. 2B is a front view of the lens barrel 200, and FIG. 2C is a right side view of the lens barrel 200. It is. In the description of the embodiment, the front view of FIG. 2B is defined as the front, the surface facing the front is the back, the surface viewed from the right side of the front is the right side, and the surface viewed from the left side of the front is The surface viewed from the upper side relative to the front is referred to as the upper surface, and the surface viewed from the lower side relative to the front is referred to as the lower surface. In FIG. 2C, the left side of the lens barrel is called the object side, and the right side is called the image sensor side.

  FIG. 3 shows a cross-sectional view AA in FIG. The configuration of the lens barrel 200 and the function of each component will be briefly described with reference to FIG. The photographing optical system of the lens barrel 200 includes a first group lens unit L1 composed of a plurality of lenses, a second group lens unit L2, a third group lens L3 (a) composed of a plurality of lenses, and an image blur correction lens. L3 (b) is provided. The photographing optical system further includes a focus lens L4, a fifth group lens unit L5 including two lenses, and an aperture unit 6. Light from the object is guided to the image sensor 7 via the photographing optical system.

  Reference numeral 301 denotes a second group moving member that holds the second group lens group L2 so as to be movable in the optical axis direction. Reference numeral 302 denotes a third group moving member that holds the third group lens L3 (a) and the image blur correction lens L3 (b) so as to be movable in the optical axis direction. Reference numeral 303 denotes a fourth group moving member that holds the focus lens L4 so as to be movable in the optical axis direction.

(Explanation of zooming operation)
A zooming operation in the lens barrel 200 will be described. The lens barrel 200 is a lens barrel having a zoom mechanism that performs a zooming operation of the photographing optical system when the photographer operates the zoom operation switch 104.

  The second group moving member 301 is connected to a second group rack (not shown) and a second group motor (not shown). When this motor is driven, the optical axis moving direction guide mechanism is formed by two guide bars (not shown) parallel to the optical axis. Along the optical axis. Similarly to the second group moving member 301, the third group moving member 302 is connected to a third group rack (not shown) and a third group motor (not shown). When the motor is driven, the motor moves in the optical axis direction along an optical axis moving direction guide mechanism by two guide bars (not shown) parallel to the optical axis.

  The fourth group moving member 303 is configured to be movable in the optical axis direction independently of other lens groups by an electromagnetic actuator (actuator) including a coil and a magnet (not shown), and performs focus adjustment. As described above, each moving member holding the lens group moves in the optical axis direction, thereby performing a zooming operation.

(Outline of image stabilization device)
The outline of the image blur correction apparatus according to the first embodiment of the present invention will be described below with reference to FIG. FIG. 4 is a rear perspective view of the image blur correction apparatus according to the present embodiment. The image blur correction apparatus 401 according to the present embodiment detects the amount of camera shake when the photographer shakes the camera during shooting, and the image blur correction lens L3 (b) in a direction to cancel the image blur due to the camera shake. Image blur correction is performed by moving.

  In other words, the image shake correction apparatus 401 is an optical image shake correction apparatus, the correction lens L3 is a correction optical system for correcting blurring of an optical image, and the cancellation direction is the optical axis of the correction optical system. The directions are orthogonal.

  It is known that camera shake at the time of photographing is a vibration component around 9 Hz. An angular velocity sensor such as a gyro sensor (not shown) is provided inside the camera body, and detects a vibration component due to camera shake. The detected camera shake information is transmitted to a camera body control unit (not shown). The camera body control unit calculates an image blur correction lens movement amount for canceling image blur due to camera shake based on the transmitted camera shake information.

  The camera main body control unit controls the image blur correction device 401 so that a predetermined current flows in accordance with the calculated movement amount of the image blur correction device, and drives the image blur correction lens L3 (b). Perform corrective action. The image shake correction apparatus 401 includes a fixed group (fixed member) including a plurality of parts including the third group moving member 302 and a movable group (movable member) that is held so as to be movable in the direction orthogonal to the optical axis with respect to the fixed group. ).

  The movable group holds one of a magnet and a coil for moving the correction optical system in a direction orthogonal to the optical axis and is movable in a direction orthogonal to the optical axis. The fixed group holds the other of the magnet and the coil and does not move in the direction perpendicular to the optical axis. The configuration of the image blur correction apparatus 401 in the present embodiment will be described in detail with reference to FIGS.

(Description of fixed group configuration)
With reference to Fig.5 (a)-FIG.5 (c), the structure of the fixed group of the 1st Embodiment of this invention and the function of each component are demonstrated.

  FIG. 5A is a front-side exploded perspective view of a fixed group constituting the image blur correction device 401.

  In this figure, reference numeral 500 denotes a fixed group of the image blur correction apparatus 401, and 302 denotes the above-described third group moving member. Reference numeral 501 denotes a pair of magnets Y (first and second magnets) that are constituent elements of an electromagnetic actuator that drives the image blur correction lens L3 (b) in the lateral direction (yaw direction, first direction). First magnet pair). Reference numeral 502 denotes a pair of magnets P (third and fourth magnets) that are constituent elements of an electromagnetic actuator that drives the image blur correction lens L3 (b) in the vertical direction (pitch direction, second direction). Second magnet pair).

  Reference numeral 503 denotes an iron yoke Y (first yoke) that closes the magnetic path of the magnetic flux generated from the magnet Y501, and reference numeral 504 denotes an iron yoke P (second yoke) that closes the magnetic path of the magnetic flux generated from the magnet P502. Reference numeral 505 denotes three balls (rolling balls) that are held between the fixed group 500 and the movable group and roll between the fixed and movable groups. Reference numeral 506 denotes a rack that is fitted with a motor that drives three groups (not shown) in the optical axis direction and moves the image blur correction device 401 in the optical axis direction. The pair of magnets Y501 are arranged so that the S pole and the N pole are reversed. The same applies to the pitch-side magnet P502.

  FIG. 5B shows a rear view of the fixed group 500 as viewed from the back. In this figure, reference numeral 507 denotes an opening which is a through hole formed in an octagonal shape at the center of the third group moving member 302. As will be described in detail later, the movable group of the image blur correction device 401 is mechanically restricted within the main opening 507, and the center of each side of the upper, lower, left, and right sides of the movable group is the movable group. Used as the center end of the mechanical center. Reference numeral 508 denotes three ball recesses (housing portions) that incorporate three balls 505 and restrict their positions. Note that the number of the concave portions for the ball may be only one instead of three.

  FIG. 5C shows a front view of the fixed group 500 viewed from the front side. In this figure, reference numeral 509 denotes three fixed group spring hooks for hooking springs incorporated between the movable group described later, and 510 denotes a third group moving member 302 for holding the third group lens L3 (a). The adhesion part which is a recessed part of 3 places which apply | coats UV adhesive agent is represented.

(Description of movable group configuration)
With reference to FIG. 6A and FIG. 6B, the configuration of the movable group and the function of the components of the first embodiment of the present invention will be described. FIG. 6A is an exploded front perspective view of the movable group in the present image blur correction device.

  In this figure, 600 is a movable group of the image blur correction device 401, and 601 is a shift barrel which is a resin mold member holding each component of the movable group 600. Reference numeral 602 denotes a coil Y (first coil) which is a component of an electromagnetic actuator that drives the movable group 600 in the lateral direction (yaw direction). Reference numeral 603 denotes a coil P (second coil) which is a component of an electromagnetic actuator that drives the movable group 600 in the vertical direction (pitch direction).

  Reference numeral 604 denotes a shift FPC (Flexible Printed Circuit) which is electrically connected to the coil Y602 and the coil P603 and mounts a magnetic sensor (Hall element) described later. The shift FPC 604 includes a straight line portion extending in the optical axis direction of the correction lens L3b, a curved portion 6042 bent from the straight line portion 6041 so as to cover the correction lens L3b, and a flat surface portion 6043. Reference numeral 605 denotes a guide unit having a role of guiding a part of the shift FPC 604. That is, the movable group 600 has a guide portion as a surface extending in the optical axis direction of the correction lens L3b, and the linear portion 6041 described above is bonded to this surface.

  FIG. 6B is a front view of the shift barrel 601. In FIG. 6B, reference numeral 606 denotes three ball receiving surfaces which are formed in a cylindrical shape and receive three balls 505 on the movable group side. Reference numeral 607 denotes three coil bonding portions Y for bonding the coil Y602 to the shift barrel 601. Reference numeral 608 denotes three coil bonding portions P for bonding the coil P603 to the shift barrel 601. Reference numeral 609 denotes four caulking portions for fixing the image blur correction lens L3 (b) to the shift barrel 601. Reference numeral 610 denotes three movable group spring hooks for hooking springs built in between the fixed group 500 described later. Reference numeral 611 denotes, for example, a magnetic sensor which is a position detection means for detecting the position of the movable group with respect to the fixed group 500.

(Assembly of fixed group and movable group)
The assembly of the fixed group 500 and the movable group 600 will be described with reference to FIG. FIG. 7 is a perspective view of the movable group 600 incorporated into the fixed group 500 as viewed from the back side.

  In FIG. 7, reference numeral 701 denotes three tension springs for urging the movable group 600 in the direction toward the fixed group 500. Reference numeral 702 denotes a rear metal plate attached to the fixed group 500. Reference numeral 703 denotes an FPC fastening portion which is a surface obtained by bending an end portion of the back sheet metal 702. Reference numeral 704 denotes three sheet metal screws for fastening the back sheet metal 702. Reference numeral 705 denotes an FPC fastening screw for fastening the shift FPC 604 to the rear sheet metal 702. The three balls 505 are inserted in the ball recesses 508 of the third group moving member 302.

  When the movable group 600 is incorporated into the fixed group 500, three ball recesses 508 of the third group moving member 302 and three ball receiving surfaces 606 of the shift barrel 601 are each provided with three balls 505 in the optical axis direction. The position of the movable group 600 is determined in contact with the optical axis. In this state, the three tension springs 701 are respectively incorporated into the three fixed group spring hooks 509 of the third group moving member 302 and the three movable group spring hooks 610 of the shift barrel 601, thereby energizing and moving. The group 600 is biased toward the fixed group 500.

  After incorporating the tension spring 701, the back sheet metal 702 is assembled. The position of the rear sheet metal 702 in the direction perpendicular to the optical axis is determined by the positioning boss of the third group moving member 302 and the positioning hole of the rear sheet metal 702. After the back sheet metal 702 is assembled to the third group moving member 302, the back sheet metal 702 is fastened and fixed to the third group moving member 302 by three sheet metal screws 704.

  The role of the back sheet metal 702 will be described. As described above, the fixed group 500 is urged in the direction of the fixed group 500 by the urging force of the three tension springs 701, and holds its position. When a large impact in the optical axis direction is applied to the image blur correction device 401, the movable group 600 moves to the rear of the optical axis with the extension of the tension spring 701.

  When the extension amount of the tension spring 701 exceeds the diameter of the ball 505 arranged at three locations, the ball 505 falls off from the ball recess 508 of the third group moving member 302, and the image blur correction device 401 is It will cause malfunction. Therefore, a component as a pressing member of the movable group 600, such as the rear metal plate 702, is required as a position restriction behind the optical axis when the movable group 600 moves rearward due to an impact or the like.

  Further, the FPC fastening portion 703 of the back metal plate 702 is provided with an intermediate portion receiving of the shift FPC 604 and a pilot hole for fastening the shift FPC 604 with the FPC fastening screw 705.

(Configuration to achieve radial downsizing)
Hereinafter, a configuration for realizing radial downsizing in the present embodiment will be described.

  In the present embodiment, as shown in FIG. 11, the magnet 501, which is the other provided in the fixed group 500, and the linear portion 6041 overlap when viewed in the optical axis OA direction of the correction lens L <b> 3 b. The term “overlap with the magnet 501” as used herein means that it overlaps with either the first magnet or the second magnet, the region between the first magnet and the second magnet constituting the magnet 501 as the first magnet pair. .

  Note that the linear portion 6041 only needs to overlap the magnet 501 in any movable range of the correction lens L3b. For example, when the correction lens L3b has moved to the maximum, the linear portion 6041 does not overlap the magnet 501. Good.

In other words, the area A ₆₀₄₁ having the same width as the straight line portion 6041 in the direction perpendicular to the optical axis of the correction lens L3b only has to overlap with any of the following areas. That is, a region A ₅₀₁₃ between the first magnet and the second magnet constituting the magnet 501 as the first magnet pair, a region A ₅₀₁₁ where the first magnet is provided, and a region A where the second magnet is provided. ₅₀₁₂ .

  By configuring the optical apparatus as described above, the curved portion 6042 can be provided at a position closer to the optical axis OA of the correction lens L3b than before, so that a space necessary for the curved portion 6042 to bend is provided. However, it is possible to reduce the size in the radial direction as compared with the prior art.

(More preferred form)
In addition to the configuration in which the linear portion 6041 overlaps with the magnet 501 as described above, it is more preferable that the optical device has the following configuration.

  First, it is more preferable that the entire curved portion 6042 overlaps the fixed group 500 when the correction lens L3b is viewed in the optical axis direction. With this configuration, it is possible to further reduce the size in the radial direction. The fixed group 500 includes a hole 900 extending in the optical axis direction of the correction lens L3b for inserting a guide bar (not shown) as shown in FIG.

The following configuration may be employed instead of the configuration in which the entire bending portion 6042 overlaps the fixed group 500 when the correction lens L3b is viewed in the optical axis direction. That is, as shown in FIG. 8 (a), the curved portion 6042 may be provided on the center _{(A 900)} the optical axis side of the correcting lens L3b than _{(O L3b} side) of the hole (insertion hole) . In other words, it is only necessary that the entire curved portion 6042 is located in a region A ₆₀₄₂ between two parallel straight lines passing through the center A _{900 of} the hole and the optical axis _OL3b .

  Secondly, as shown in FIG. 8B, the flat portion 6043 has a region between the third magnet and the fourth magnet constituting the magnet 502 as the second magnet pair, the third magnet, and the fourth magnet. More preferably, it overlaps with either one. With this configuration, it is possible to further reduce the size in the radial direction. The flat portion 6043 is held by a back metal plate 702 provided on the opposite side of the movable group 600 from the fixed group 500 as a holding member that holds the flat portion 6043.

(Configuration of shift FPC 604)
The configuration of the shift FPC 604 will be described with reference to FIGS. 8 (a) and 8 (b). FIG. 8A is a rear view of the image blur correction apparatus 401, and FIG. 8B is a view of the BB cross section of FIG.

  8A, reference numeral 801 denotes two land portions Y for soldering the tip of the copper wire of the coil Y602 mounted on the shift FPC 604, and reference numeral 802 denotes a copper wire of the coil P603 mounted on the shift FPC 604. There are two land portions P for soldering the tip portion. 8B, reference numeral 803 denotes a connecting movable portion of the shift FPC 604, reference numeral 804 denotes a U-turn portion of the shift FPC 604, reference numeral 805 denotes a connection portion for connection to the main body side, and reference numeral 806 denotes a lower surface portion of the third group moving member 302.

  The shift FPC 604 is an FPC arranged to electrically connect the coil Y602, the coil P603, and the magnetic sensor 611 to a main body side substrate (not shown). The shift FPC 604 is electrically connected to each coil by pulling out the copper wire tip portions of the coil Y602 and the coil P603 and soldering the land portion Y801 and the land portion P802 provided on the shift FPC 604, respectively.

  The shift FPC 604 extending along the guide portion 605 of the movable group 600 is fixed by the FPC fastening portion 703 of the back sheet metal 702 and the FPC fastening screw 705 through the connecting movable portion 803. Thereafter, the further extended shift FPC 604 extends to the imaging surface side, and a U-turn portion 804 that absorbs the expansion and contraction of the shift FPC 604 during zooming operation causes the U-turn to the subject side.

  Further, the connection portion 805 is electrically connected by being inserted into a connector of the main body side substrate (not shown). As shown in FIG. 8B, the above-described connecting movable portion 803 is arranged offset (in a shifted area) on the imaging surface side with respect to the yoke P504, the magnet P502, and the coil P603 in the optical axis direction. Yes.

  Here, the factors that determine the lower surface of the center of the optical axis of the third group moving member 302 will be described. The lower surface portion 806 of the third group moving member 302 is a position determined by the outer shape of the image blur correction lens L3 (b), the thickness of the third group moving member 302, and the width of the two magnets P502. Therefore, the configuration that minimizes the image blur correction apparatus 401 is to arrange the lower surface of the U-turn portion 804 of the shift FPC 604 so as to contact the lower surface portion 806 of the third group moving member 302 as shown in FIG. is there.

  In this embodiment, the FPC fastening portion 703 of the back sheet metal 702 is disposed so as to overlap the magnet P502 and the coil P603 as the second magnet pair on the projection in the optical axis direction, and the width b of the U-turn portion 804 is set to the fixed group 500. Overlaid on the optical axis projection. With this arrangement, the lower surface of the U-turn portion 804 of the FPC 604 is disposed so as to contact the lower surface portion 806 of the third group moving member 302, and the length a from the optical axis center to the lower surface of the U-turn portion 804 of the shift FPC 604 Can be reduced. By doing so, the outer shape of the lens barrel shown in FIG. 3 can be reduced.

(Description of operation of image blur correction apparatus)
With reference to FIGS. 8C to 10, the operation of the image blur correction apparatus according to the first embodiment of the present invention will be described. FIG. 8C is a view of the CC cross section in FIG. 8A viewed from the direction of the arrow, and FIG. 9 is an enlarged view D in FIG.

  As described above, the movable group 600 in the image blur correction device 401 is driven by an electromagnetic actuator using a magnet and a coil. As shown in FIG. 9, the magnet Y <b> 501 and the yoke Y <b> 503 provided in the fixed group 500 are arranged to face the coil Y <b> 602 provided in the movable group 600.

  The current supplied from the shift FPC 604 flows to the coil Y602 with respect to the magnetic field generated by the magnet Y501 and the yoke Y503. As a result, Lorentz force is generated due to repulsion between the lines of magnetic force of the magnet and the coil, and the movable group 600 can move in a plane perpendicular to the optical axis. The position of the movable group 600 is detected by arranging the magnetic sensor 611 at the center of the coil Y602 and detecting the magnetic flux generated from the magnet Y501. The pitch side has the same configuration.

  FIG. 10 is a schematic diagram showing the positional relationship of the mechanical end on the surface perpendicular to the optical axis of the image blur correction lens L3 (b) and the output of the Hall element. For example, the output value at the time of the upper end in the pitch direction is M1, and the lower output value is N1. The output value when the right mechanical end of the yaw direction is applied is, for example, M2, the left side is N2, and this value is read by a microcomputer (not shown), the pitch side calculates (M1 + N1) / 2, and the yaw side calculates (M2 + N2) / 2. Do.

  Then, each Hall output center value is calculated, and the position where the Hall element output value becomes this calculated value is set as the center position in the stroke. As a premise of this calculation, it is necessary that the change of the Hall output value within the stroke is linear, and the Hall element output linearity that does not impair the optical performance is ensured in the movable stroke of the movable group 600. .

(Other embodiments)
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.

  In the above-described embodiment, the planar portion 6043 overlaps with any one of the third magnet and the fourth magnet, the region between the third magnet and the fourth magnet constituting the magnet 502 as the second magnet pair. Illustrated. However, a configuration in which the flat portion 6043 does not overlap with the above-described regions may be employed. For example, the plane portion 6043 may be provided on a virtual circumference along the curved portion 6042 so that the plane portion 6043 overlaps with a position farther from the magnet 501 than the magnet 502. In other words, the flat portion 6043 may be provided on the opposite side of the magnet 501 with the magnet 502 interposed therebetween.

  Even in such a configuration, if the magnet 501 and the linear portion 6041 overlap, it is possible to reduce the size in the radial direction as compared with the conventional case.

DESCRIPTION OF SYMBOLS 100 Camera main body 200 Lens barrel 301 2nd group moving member 302 3rd group moving member 303 4th group moving member 401 Image blur correction device 500 Fixed group 600 Movable group 601 Shift barrel 701 Tensile spring 702 Back sheet metal 703 FPC fastening part 803 Linking movable part 804 U-turn section L1 1st lens group L2 2nd lens group L3 (a) 3rd lens L3 (b) Image stabilization lens L4 Focus lens L5 5th lens group 6 Aperture unit 7 Imaging element

Claims (9)

A correction optical system for correcting blur of the optical image;
A magnet and a coil for moving the correction optical system in a direction perpendicular to the optical axis of the correction optical system;
A movable member that holds one of the magnet and the coil and the correction optical system and is movable in a direction perpendicular to the optical axis;
A holding member that holds the other of the magnet and the coil and is immovable in a direction perpendicular to the optical axis;
A flexible printed circuit board having a linear portion extending in the optical axis direction of the correction optical system,
In the optical axis direction view of the correction optical system, the other and the straight line portion overlap,
An optical apparatus characterized by that. The other is the magnet;
In the optical axis direction view, the magnet and the linear portion overlap,
The optical apparatus according to claim 1. The movable member has a surface extending in the optical axis direction,
The straight portion is bonded to the surface;
The optical apparatus according to claim 1, wherein the optical apparatus is an optical apparatus. The flexible printed circuit board further includes a curved portion that bends from the linear portion so as to cover the correction optical system,
In the optical axis direction view, the entire bending portion overlaps the fixing member.
The optical apparatus according to claim 1, wherein the optical apparatus is an optical apparatus. The flexible printed circuit board further includes a curved portion that bends from the linear portion so as to cover the correction optical system,
The fixing member is provided with a hole extending in the optical axis direction,
In the optical axis direction view, the curved portion is provided closer to the optical axis than the center of the hole.
The optical apparatus according to claim 1, wherein the optical apparatus is an optical apparatus. A first magnet pair for moving the correction optical system as the magnet in a first direction; a second magnet pair for moving the correction optical system in a second direction orthogonal to the first direction;
A first coil for moving the correction optical system as the coil in the first direction; and a second coil for moving the correction optical system in the second direction;
In the optical axis direction view, the linear portion overlaps one of a region between the first magnet and the second magnet constituting the first magnet pair, the first magnet, and the second magnet.
The optical apparatus according to claim 1, wherein the optical apparatus is an optical apparatus. A holding member that holds the flat surface of the flexible printed circuit board;
In the optical axis direction view, the flat surface portion overlaps one of the third magnet and the fourth magnet, the region between the third magnet and the fourth magnet constituting the second magnet pair,
The optical apparatus according to claim 6. The holding member is a back sheet metal provided on the opposite side of the movable member to the fixed member.
The optical apparatus according to claim 7. A photographing optical system for forming an optical image of a subject;
A ball rolling between the movable member and the fixed member;
A storage section for storing the balls;
Position detecting means for detecting the position of the movable member;
The optical apparatus according to claim 1, wherein the optical apparatus is an optical apparatus.

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