JP2017068200A - Lens barrel and imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compactly store an FPC during collapse of a lens barrel without causing a damage thereto, while avoiding enlargement of the lens barrel or rising of expense even if a maximum amount of the extension of the lens barrel is great.SOLUTION: A lens barrel moves in an optical axis direction according to a zooming operation, and includes: an aperture mechanism 20 having a first discharge part; a second group lens barrel 30 moving to an optical axis direction according to the zooming operation and arranged on the inside in a radial direction of the first discharge part; an FPC 22 drawn out to an image surface side along an inner side surface in the radial direction of the first discharge part; and an FPC 33 drawn out to the image surface side along a second discharge part. A subject side end part of the first discharge part is provided with a first regulation part for regulating a movement in a thickness direction of the FPC 22. The image side end part of the second discharge part is provided with a second regulation part for regulating the movement in a width direction and a thickness direction of the FPC 33. The FPC 22, FPC 33 are electrically connected to a camera main body. The first discharge part is overlapped in a direction parallel to the optical axis with the second regulation part in a whole region of the zooming operation.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lens barrel mounted on an imaging apparatus such as a digital camera or a silver halide camera, and an imaging apparatus including the lens barrel.

  In an imaging apparatus such as a digital camera, an apparatus that performs a zoom operation by changing the interval in the optical axis direction of a plurality of lens groups of a lens barrel is widespread. The lens barrel is provided with a shutter mechanism, a diaphragm mechanism, an image blur correction mechanism, and the like that move in the optical axis direction in accordance with the zoom operation. As a means for supplying power to the actuator that drives these, a flexible mechanism is provided. A flexible printed circuit board is often used.

  By the way, due to the recent demand for higher shooting magnification and thinner cameras, the movement strokes of the shutter mechanism, aperture mechanism, and image blur correction mechanism accompanying the zoom operation of the lens barrel have become longer, and at the same time flexible to connect to them. There is a need to lengthen the printed circuit board. Therefore, in the retracted state of the lens barrel, it is necessary to appropriately store the long flexible printed circuit board without disconnection.

  In order to accommodate a long flexible printed circuit board in the space in the lens barrel when retracting without enlarging the lens barrel, a method for expanding the space in the lens barrel itself or efficiently folding the long flexible printed circuit board Many studies have been made on methods.

  For example, a technique has been proposed in which a part of a flexible printed board enters the effective optical path of a lens barrel when the lens barrel is retracted (Patent Document 1). This technology effectively expands the storage space of the flexible printed circuit board by efficiently using the space required only when the lens barrel is in the photographing state when the lens barrel is retracted. In addition, a technique for compactly storing a flexible printed circuit board between lens groups when the lens barrel is retracted has been proposed (Patent Document 2).

JP 09-211124 A JP 2013-3514 A

  However, in the technique described in Patent Document 1, a flexible member such as a flexible printed circuit board that is not stable in the housed state is inserted into the effective optical path of the lens barrel. For this reason, when the flexible printed circuit board enters the effective optical path of the lens barrel, the flexible printed circuit board may come into contact with the lens and damage the lens.

  Further, in the technique described in Patent Document 2, the flexible printed circuit board is flexible in the thickness direction and the width direction in the drawing portion in the optical axis direction of each flexible printed circuit board of the shutter mechanism, the diaphragm mechanism, and the camera shake correction mechanism. Is possible. Therefore, when the flexible printed circuit board is compactly stored in the lens barrel in accordance with the retracting operation of the lens barrel, the flexible printed circuit board may be sandwiched between the components of the lens barrel and disconnected.

  Therefore, the present invention avoids an increase in the cost of the lens barrel due to an increase in the size of the lens barrel or the addition of parts even when the lens barrel is extended, and also allows flexible printing during retraction without damaging the lens barrel parts. Provided is a technology capable of storing a substrate in a compact manner.

  In order to achieve the above object, the present invention is a zoom type lens barrel in which a lens group moves in the optical axis direction between a retracted position and a photographing position to change a photographing magnification, and according to a zoom operation. A first driven member having a first substrate discharge portion extending in the optical axis direction and extending toward the image plane side, and moving in the optical axis direction in accordance with the zoom operation, and radially inward of the first substrate discharge portion A second driven member having a second substrate discharge portion disposed on the surface of the imaging device, and drawn from the first driven member toward the image plane along a radially inner surface of the first substrate discharge portion. A first flexible printed circuit board electrically connected to the apparatus main body, and a second flexible printed circuit board that is drawn from the second driven member along the second substrate discharge portion toward the image plane and is electrically connected to the apparatus main body. 2 flexible printed circuit board, and a cover of the first board discharge section A body-side end portion is provided with a first restricting portion for restricting movement in the thickness direction of the first flexible printed circuit board, and an image surface side end portion of the second substrate discharging portion is provided with the second flexible print substrate. A second restricting portion for restricting movement in the width direction and the thickness direction of the substrate is provided, and the first substrate discharge portion is configured so that the second substrate discharge portion has a second restriction portion in the entire area of the zoom operation. And overlapping in the direction parallel to the optical axis.

  According to the present invention, even when the feeding amount of the lens barrel is large, the flexible printing can be performed at the time of retracting while avoiding the cost increase due to the enlargement of the lens barrel and the addition of the components and without damaging the lens barrel components. A board | substrate can be accommodated compactly.

It is the perspective view which looked at the digital camera which is an example of the embodiment of the imaging device provided with the lens barrel of the present invention from the front side (subject side). It is a disassembled perspective view of a lens barrel. (A) is the perspective view of the aperture mechanism 20, (b) is the perspective view which looked at the aperture mechanism 20 shown to (a) from the lower side. It is a perspective view of a 2nd group barrel. (A) is sectional drawing in alignment with the optical axis direction in the tele position of a lens barrel, (b) is from the board | substrate discharge | emission part of a diaphragm mechanism, and the board | substrate discharge | emission part of a 2nd group lens barrel, when a lens barrel is in a tele position. It is sectional drawing of the part from which a flexible printed circuit board is each pulled out to the image surface side. (A) is sectional drawing in alignment with the optical axis direction in the wide position of a lens barrel, (b) is from the board | substrate discharge | emission part of a diaphragm mechanism, and the board | substrate discharge | emission part of a 2nd group lens barrel, when a lens barrel is in a wide position. It is sectional drawing of the part from which a flexible printed circuit board is each pulled out to the image surface side. (A) is sectional drawing in alignment with the optical axis direction in the retracted position of a lens barrel, (b) is from the board | substrate discharge | emission part of a diaphragm mechanism, and the board | substrate discharge | emission part of a 2nd group lens barrel when a lens barrel is in a retracted position. It is sectional drawing of the part from which a flexible printed circuit board is each pulled out to the image surface side. FIG. 4 is a cross-sectional view of a main part when a portion from which a flexible printed circuit board is drawn out to the image plane side from the substrate discharge section of the aperture mechanism and the substrate discharge section of the second group barrel is viewed from the image plane direction in the optical axis direction.

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

  FIG. 1 is a perspective view of a digital camera, which is an example of an embodiment of an imaging apparatus including the lens barrel of the present invention, as viewed from the front side (subject side).

  As shown in FIG. 1, the digital camera of the present embodiment is a zoom type camera in which the lens group moves in the optical axis direction between the retracted position and the shooting position on the front side of the camera body 1 to change the shooting magnification. A lens barrel 2 is provided, and a finder window 4 is provided above the lens barrel 2. A pop-up strobe unit 3 and a release button 5 are provided on the upper surface of the camera body 1. A shooting preparation operation (focus adjustment operation, photometry operation, etc.) is started by half-pressing the release button 5 and the like, and a shooting operation (exposure to the image sensor (imaging device)) is started by pressing the release button 5 fully. The The camera body 1 corresponds to an example of the apparatus body of the present invention.

  FIG. 2 is an exploded perspective view of the lens barrel 2. As shown in FIG. 2, the lens barrel 2 includes a first group barrel 10, an aperture mechanism 20, a second group barrel 30, a moving cam barrel 40, a rectilinear barrel 50, a fixed barrel 60, a third group barrel 70, and a sensor holder. 80, a lens barrel drive motor 81 and a lens barrel flexible printed circuit board 82 are provided. The aperture mechanism 20 corresponds to an example of a first driven member of the present invention, and the second group barrel 30 corresponds to an example of a second driven member of the present invention.

  The first group barrel 10 holds a first group lens (not shown), and a lens barrier device 11 that opens and closes a photographing optical path in accordance with power on / off of the camera is provided at the tip. The diaphragm mechanism 20 includes a diaphragm unit (light quantity adjustment unit) and adjusts the quantity of light that enters the first group lens and is guided to the image sensor. The diaphragm mechanism 20 is provided with a diaphragm flexible printed circuit board 22 (hereinafter referred to as a diaphragm FPC 22). The aperture FPC 22 corresponds to an example of a first flexible printed board of the present invention.

  The second group lens barrel 30 has a second group lens holding portion 31 that holds the second group lens L2 constituting the correction lens. The second group lens holding unit 31 is supported so as to be movable in a direction orthogonal to the optical axis with respect to the anti-vibration ground plate 32 to constitute an image blur correction mechanism. The anti-vibration ground plate 32 is provided with a shutter flexible printed board 33 (hereinafter referred to as a shutter FPC 33), and a shutter mechanism is attached to the image plane side of the anti-vibration ground plate 32. The shutter FPC 33 corresponds to an example of a second flexible printed board of the present invention.

  In the movable cam barrel 40, a cam groove 41 for moving the first group barrel 10, the aperture mechanism 20 and the second group barrel 30 in the optical axis direction is formed in the inner circumferential portion, and a barrel drive motor is disposed in the outer circumferential portion. A gear portion 42 for transmitting power from 81 is provided. The rectilinear cylinder 50 is rotatably held by the movable cam cylinder 40 by bayonet coupling, and the optical axis is integrated with the movable cam cylinder 40 in a state in which the rotation is restricted by the rectilinear groove 61 formed in the inner peripheral portion of the fixed cylinder 60. Move in the direction.

  The first group barrel 10, the diaphragm mechanism 20, and the second group barrel 30 move in the optical axis direction individually by following the cam groove 41 formed in the inner peripheral portion of the movable cam barrel 40, and The rotation is restricted by the straight cylinder 50. A cam groove 62 for driving the movable cam cylinder 40 is formed on the inner peripheral portion of the fixed cylinder 60, and a rectilinear groove 61 for restricting the rotation of the rectilinear cylinder 50 is formed. In addition, a flange portion 63 that protrudes radially outward is formed on the outer peripheral portion of the fixed cylinder 60.

  The third group lens barrel 70 includes a third group lens holding portion 71 that holds the third group lens L3 constituting the focus lens. The third group lens holding unit 71 is moved in the optical axis direction by the driving force of the focus driving unit 73, and thereby a focusing operation is performed. The sensor holder 80 holds an image sensor such as a CCD sensor or a CMOS sensor, and is coupled to the fixed cylinder 60 in the optical axis direction.

  A wall portion 83 extending in the optical axis direction toward the subject side is provided on the outer peripheral portion of the sensor holder 80. A diaphragm FPC 22 and a shutter FPC 33 are connected to a lens barrel flexible printed circuit board 82 (hereinafter referred to as a lens barrel FPC 82) by a connector on the outer peripheral side of the fixed cylinder 60.

  3A is a perspective view of the diaphragm mechanism 20, and FIG. 3B is a perspective view of the diaphragm mechanism 20 shown in FIG. FIG. 4 is a perspective view of the second group barrel 30.

  As shown in FIG. 3, the diaphragm mechanism 20 is provided with a diaphragm driving unit 21 such as a stepping motor that drives the iris diaphragm. A diaphragm FPC 22 is connected to the diaphragm driving unit 21, and a positioning hole 22 a is formed on the distal end side of the diaphragm FPC 22. Further, a substrate discharge portion 23 that protrudes toward the image plane side is provided at a position facing the aperture driving portion 21 in the radial direction on the outer peripheral portion of the aperture mechanism 20. The diaphragm FPC 22 is wound around the diaphragm mechanism 20 and pulled out to the image plane side along the radially inner surface of the diaphragm mechanism 20 of the substrate discharge unit 23. Electric power is supplied from the power supply unit of the camera body 1 through the aperture FPC 22.

  Further, side walls 24 are respectively provided along the protruding direction of the substrate discharge unit 23 on both sides in the width direction of the radially inner surface of the diaphragm mechanism 20 of the substrate discharge unit 23, and the subject side end of the substrate discharge unit 23 is provided. Is provided with a floating restricting portion 25. The float restricting portion 25 restricts the floating of the diaphragm FPC 22 in the thickness direction, and the side wall 24 of the substrate discharge portion 23 restricts the movement of the diaphragm FPC 22 in the width direction. The substrate discharge unit 23 corresponds to an example of a first substrate discharge unit of the present invention.

  As shown in FIG. 4, a correction lens driving unit that moves a second group lens holding unit 31 that holds the second group lens L <b> 2 in a direction orthogonal to the optical axis on the outer peripheral side of the vibration isolation ground plate 32 of the second group barrel 30. (Not shown) is provided. A shutter drive unit (not shown) for driving the shutter mechanism is provided on the outer peripheral side of the second group lens L2 of the anti-vibration ground plate 32, and an ND for driving the ND filter is provided on the image plane side of the anti-vibration ground plate 32. A drive unit (not shown) is provided.

  On the object side of the anti-vibration ground plate 32, a cover member 34 is locked by snap-fit coupling so as to sandwich the image blur correction mechanism, the second group lens L2, the correction lens driving unit, and the shutter driving unit in the optical axis direction. . The shutter FPC 33 is connected to the correction lens driving unit, the shutter driving unit, and the ND driving unit, is wound around the cover member 34, and is imaged along the substrate discharge unit 35 provided on the outer peripheral portion of the cover member 34. Pulled out to the side. A positioning hole 33b is formed on the front end side of the shutter FPC 33. Electric power is supplied from the power supply unit of the camera body 1 through the shutter FPC 33.

  In addition, position restricting portions 36 are provided on both sides in the width direction of the image surface side end portion of the substrate discharge portion 35, and an engaging portion 33 a of the shutter FPC 33 is engaged with the position restricting portion 36 and positioned. Thereby, the movement of the shutter FPC 33 in the width direction and the thickness direction is restricted. The substrate discharge unit 35 corresponds to an example of a second substrate discharge unit of the present invention.

  Incidentally, as one means for increasing the photographing magnification of the lens barrel 2, it is possible to increase the extension amount of the second group lens L2 as much as possible. In this case, it is necessary to increase the lengths of the aperture FPC 22 and the shutter FPC 33. Note that it is possible to increase the magnification by increasing the amount of extension of a normal lens instead of the second group lens L2 as the correction lens.

  The leading ends of the diaphragm FPC 22 and the shutter FPC 33 drawn out from the diaphragm mechanism 20 and the second group lens barrel 30 to the image plane side are gaps formed between the flange portion 63 of the fixed barrel 60 and the wall portion 83 of the sensor holder 80. It is pulled out from the part to the outside of the fixed cylinder 60.

  The aperture FPC 22 and the shutter FPC 33 drawn to the outside of the fixed cylinder 60 are fixed by fitting the positioning hole 22a and the positioning hole 33b to the positioning convex portion 84 of the sensor holder 80, respectively. In this state, the distal ends of the diaphragm FPC 22 and the shutter FPC 33 are connected to a diaphragm connector (not shown) and a shutter connector (not shown) mounted on the lens barrel FPC 82, respectively. Thereby, the lens barrel 2 and the camera body 1 are electrically connected.

  Next, the behavior of the diaphragm FPC 22 and the shutter FPC 33 during the zoom operation of the lens barrel 2 will be described with reference to FIGS.

  5A is a cross-sectional view taken along the optical axis direction of the lens barrel 2 at the tele position, and FIG. 5B is an aperture FPC 22 from the substrate discharge portions 23 and 35 when the lens barrel 2 is at the tele position. It is sectional drawing of the part by which the shutter FPC33 is pulled out to the image surface side.

  6A is a cross-sectional view of the lens barrel 2 along the optical axis direction at the wide position, and FIG. 6B is a diagram illustrating the aperture FPC 22 and the substrate FPCs 22 and 35 when the lens barrel 2 is at the wide position. It is sectional drawing of the part by which the shutter FPC33 is pulled out to the image surface side.

  7A is a cross-sectional view along the optical axis direction at the retracted position of the lens barrel 2, and FIG. 7B is an aperture FPC 22 from the substrate discharge portions 23 and 35 when the lens barrel 2 is at the retracted position. It is sectional drawing of the part by which the shutter FPC33 is pulled out to the image surface side.

  The diaphragm FPC 22 is disposed on the outer diameter side of the shutter FPC of the second group barrel 30 located on the image plane side with respect to the diaphragm mechanism 20. The diaphragm FPC 22 and the shutter FPC 33 are set to have lengths so that no slack occurs at the tele position (see FIG. 5) of the lens barrel 2 that the diaphragm mechanism 20 and the second group barrel 30 extend most. The overall lengths of the aperture FPC 22 and the shutter FPC 33 are determined by the positional relationship between the aperture mechanism 20 and the second group barrel 30 and the sensor holder 80 when the aperture mechanism 20 and the second group barrel 30 are at the maximum extended position.

  Therefore, at the retracted position (FIG. 7A) and the wide position (FIG. 6A), the diaphragm FPC 22 and the shutter FPC 33 are fixed between the substrate discharge portions 23 and 35 by the positioning convex portion 84 of the sensor holder 80. Looseness occurs in the area. For this reason, the diaphragm FPC 22 and the FPC 22 and the lens FPC 22 do not affect the zoom operation, and are not pinched between the lens barrel 2 parts when retracted at the retracted position, or damage the lens barrel 2 parts. The shutter FPC 33 needs to be accommodated.

  Therefore, in this embodiment, when the lens barrel 2 is retracted, as shown in FIG. 7A, the diaphragm FPC 22 and the shutter FPC 33 are moved to the movable cam barrel 40, the flange portion 63 of the fixed barrel 60, and the sensor holder 80. Is housed in an S shape in a space P formed by the wall portion 83. This will be specifically described below.

  When the lens barrel 2 is retracted from the tele position shown in FIG. 5A to the retracted position, both the aperture mechanism 20 and the second group lens barrel 30 move to the image plane side, and the aperture FPC 22 and the shutter FPC 33 are U-shaped. The shape becomes the wide state shown in FIG. When the lens barrel 2 is further retracted from the wide position to the retracted position, the diaphragm FPC 22 and the shutter FPC 33 come into contact with the bottom surface 85 of the sensor holder 80.

  As the lens barrel 2 is further retracted, the contact area of the diaphragm FPC 22 and the shutter FPC 33 with the bottom surface 85 of the sensor holder 80 increases. That is, the diaphragm FPC 22 and the shutter FPC 33 expand in the radial direction of the lens barrel 2 (the direction indicated by the arrow X in FIG. 7), and when the retracting operation of the aperture mechanism 20 and the second group barrel 30 further proceeds, a part of the sensor It rides on the inclined portion 86 of the holder 80.

  The diaphragm FPC 22 and the shutter FPC 33 are driven by the force by which the diaphragm mechanism 20 and the second group lens barrel 30 move to the image plane side, and the component force from the inclined portion 86 of the sensor holder 80 is indicated by the arrow X in FIG. Slip in the direction. Thereafter, the diaphragm FPC 22 and the shutter FPC 33 abut against the inner peripheral surface of the wall portion 83 of the sensor holder 80, and contact with the inner peripheral surface of the wall portion 83 when the diaphragm mechanism 20 and the second group lens barrel 30 are further retracted. The area increases.

  Thereafter, the diaphragm FPC 22 and the shutter FPC 33 are driven by the force by which the diaphragm mechanism 20 and the second group lens barrel 30 move to the image plane side, and the component force from the inclined portion 86 of the sensor holder 80 is changed in the optical axis direction (FIG. 7 (arrow Y direction) and slide. Finally, the diaphragm FPC 22 and the shutter FPC 33 are formed by the movable cam cylinder 40, the flange 63 of the fixed cylinder 60, and the wall 83 of the sensor holder 80, as shown in FIG. The space P is stored in an S shape.

  Thereby, the diaphragm FPC 22 and the shutter FPC 33 are formed in an S shape radially inward and radially outward from the gap between the flange portion 63 of the fixed cylinder 60 and the wall portion 83 of the sensor holder 80 toward the image plane side. It is stored in the space P in a swelled state. For this reason, the lengths of the diaphragm FPC 22 and the shutter FPC 33 can be increased by the difference between the lengths swelled radially inward and outward in the S-shape as compared with the case where the bulge is simply swelled in the U-shape toward the image plane side. it can.

  Further, when the aperture FPC 22 and the shutter FPC 33 slide the sensor holder 80 by appropriately managing the surface roughness of the inclined portion 86 of the sensor holder 80 and the inner surface of the wall portion 83 where the diaphragm FPC 22 and the shutter FPC 33 are in sliding contact with each other. The frictional force can be reduced. As a result, disconnection of the aperture FPC 22 and the shutter FPC 33 can be suppressed and appropriate storage can be achieved.

  Next, the relationship between the aperture FPC 22 and the shutter FPC 33 will be described with reference to FIGS. 5 (b), 6 (b), 7 (b), and 8. FIG. 8A shows the portions where the diaphragm FPC 22 and the shutter FPC 33 are pulled out from the substrate discharge portion 23 of the diaphragm mechanism 20 and the substrate discharge portion 35 of the second group lens barrel 30 to the image plane side, respectively. FIG. FIG. 8B is a cross-sectional view of the main part at the position of the position restricting portion 36 provided in the substrate discharge portion 35 of the shutter FPC 33 on the image plane side from FIG. 8A.

  Since the aperture FPC 22 and the shutter FPC 33 have flexibility, they are bent and deformed in the thickness direction and the width direction in accordance with the zoom operation of the lens barrel 2. As described above, if the behaviors of the aperture FPC 22 and the shutter FPC 33 cannot be properly managed, the zoom operation is affected, or the lens barrel 2 is sandwiched between components when retracted at the retracted position, or the lens barrel. 2 parts may be damaged.

  As shown in FIGS. 5B, 6B, and 7B, the diaphragm FPC 22 and the shutter FPC 33 are pulled out to the image plane side through between the substrate discharge portion 23 and the substrate discharge portion 35. It is. The shutter FPC 33 is restrained from moving in the width direction and the thickness direction by engaging the position of the engaging portion 33a with the position restricting portion 36 of the cover member 34 and fixing the position thereof.

  On the other hand, the position of the diaphragm FPC 22 is fixed by a floating restricting portion 25 provided at an end of the substrate discharging portion 23 on the subject side. However, the substrate discharging portion 23 is provided with a position restricting portion due to space. I can't. For this reason, the position of the diaphragm FPC 22 is not restricted in the range from the floating restriction part 25 to the positioning convex part 84 of the sensor holder 80.

  In the zoom operation, since the distance between the aperture mechanism 20 and the second group lens barrel 30 is not constant, the aperture FPC 22 is engaged with the position restricting portion 36 of the cover member 34 together with the engaging portion 33a of the shutter FPC 33. The position cannot be restricted.

  Therefore, in the present embodiment, as shown in FIGS. 5B, 6B, and 7B, the image plane side is located at the tip of the substrate discharge portion 23 of the diaphragm mechanism 20 from which the diaphragm FPC 22 is drawn. An extending portion 26 is provided to extend. The extending portion 26 always overshoots in the direction parallel to the optical axis on the image plane side with respect to the position restricting portion 36 provided in the substrate discharge portion 35 of the shutter FPC 33 in the entire zoom operation region from the tele position to the retracted position. It is configured to wrap.

  As shown in FIGS. 8A and 8B, the diaphragm FPC 22 and the shutter FPC 33 are provided with a substrate discharge portion 23 or an extension portion 26 of the diaphragm mechanism 20, its side wall 24, and a substrate discharge portion of the second group lens barrel 30. It is drawn out to the image plane side through a drawer space J surrounded by 35.

  The radial gap between the side wall 24 of the substrate discharge portion 23 and the substrate discharge portion 35 is set to a minimum gap that does not contact each other and does not affect the zoom operation. Further, the width dimension between the side walls 24 of the substrate discharge unit 23 and the gap amount between the substrate discharge unit 23 and the substrate discharge unit 35 are the minimum gaps that allow the diaphragm FPC 22 and the shutter FPC 33 to smoothly slide in the zoom operation. Is set to

  Here, the shutter FPC 33 is positioned by the position restricting portion 36. For this reason, even if the diaphragm FPC 22 and the shutter FPC 33 are bent in accordance with the zoom operation in the range from the subject-side end portions of the substrate discharge portions 23 and 35 to the position restricting portion 36 of the cover member 34, the thicknesses of the diaphragm FPC 22 and the shutter FPC 33 Movement in the direction and width direction is restricted. For this reason, the zoom operation is not affected.

  Further, the aperture FPC 22 is in sliding contact within the drawer space J in the entire area of the zoom operation. For this reason, even if the diaphragm FPC 22 is bent by the zoom operation, the bending operation remains in the drawer space J in the range from the base end portion of the substrate discharge portion 23 to the position restricting portion 36 of the cover member 34, and from the drawer space J. The diaphragm FPC 22 is not pulled out to the outside. For this reason, the zoom operation is not affected, and the lens barrel 2 is not sandwiched between the components of the lens barrel 2 when retracted at the retracted position, or the components of the lens barrel 2 are not damaged.

  As described above, in this embodiment, even if the feeding amount of the lens barrel 2 is large, the lens barrel 2 can be retracted while avoiding an increase in size and cost and without damaging the components of the lens barrel 2. Sometimes the FPCs 22 and 33 can be stored compactly.

  As described above, the present invention has been described in detail on the basis of preferred embodiments. However, the present invention is not limited to these specific embodiments, and materials, shapes, dimensions, forms, numbers, arrangement locations, etc. The present invention can be changed as appropriate without departing from the gist of the invention.

1 Camera body 2 Lens barrel 20 Aperture mechanism 22 Aperture FPC
23 Substrate ejecting section 25 Floating restricting section 26 Extending section 30 Second lens barrel 33 Shutter FPC
33a Engaging part 34 Cover member 35 Substrate discharging part 36 Position restricting part

Claims (5)

A zoom lens barrel in which the lens group moves in the optical axis direction between the retracted position and the shooting position to change the shooting magnification,
A first driven member having a first substrate discharge portion that moves in the optical axis direction according to the zoom operation and extends toward the image plane side;
A second driven member having a second substrate discharge portion that moves in the optical axis direction in accordance with the zoom operation and is disposed radially inside the first substrate discharge portion;
A first flexible printed circuit board which is drawn from the first driven member along the radially inner surface of the first substrate discharge portion to the image surface side and is electrically connected to the apparatus main body of the imaging device;
A second flexible printed circuit board that is pulled out from the second driven member along the second substrate discharge portion toward the image plane and is electrically connected to the apparatus main body.
A first restricting portion for restricting movement of the first flexible printed circuit board in the thickness direction is provided at an end of the first substrate discharge portion on the subject side,
A second restricting portion for restricting movement in the width direction and thickness direction of the second flexible printed circuit board is provided at an end on the image plane side of the second substrate discharge portion,
The lens mirror characterized in that the first substrate discharge portion overlaps the second restricting portion of the second substrate discharge portion in a direction parallel to the optical axis in the entire area of the zoom operation. Tube.   The side wall which restricts the movement of the width direction of the said 1st flexible printed circuit board is provided in the both sides of the width direction of the surface inside the radial direction of the said 1st board | substrate discharge | emission part. Lens barrel. The second driven member includes an image blur correction mechanism,
The image blur correction mechanism includes an anti-vibration ground plate, a lens holding unit that holds a correction lens, and a cover member.
The lens barrel according to claim 1, wherein the second restricting portion is provided on the cover member.   4. The lens barrel according to claim 1, wherein the first driven member is a light amount adjustment unit that adjusts a light amount incident on the lens group. 5. An imaging apparatus including a zoom lens barrel that changes a photographing magnification by moving a lens group in a direction of an optical axis between a retracted position and a photographing position,
An imaging apparatus comprising the lens barrel according to any one of claims 1 to 4 as the lens barrel.