JP2004133054A - Lens barrel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens barrel made reliable, and made small in size and thin in thickness. <P>SOLUTION: The lens barrel 10 has a 1st group frame 31 and a fixed frame 32, and incorporates a prism to refract subject luminous flux from an incident optical axis to an optical axis being in a perpendicular direction in the 1st group frame. A lens group capable of moving forward and backward, a shutter unit and a CCD or the like are arranged in the frame 32, and a solenoid for driving a shutter is arranged on the left side of the frame 31 and a step motor for driving a lens group is arranged on the left side wall part 32k of the frame 32. PRs 58 and 59 for detecting the position of a lens group are positioned on a front side wall part 32j and mounted on an FPC for connection 86, and the motor terminals 53d and 54d of the step motor are inserted through the insertion holes 32m and 32n of the wall part 32k to the outside and connected to the FPC 86. By arranging the solenoid and the step motor on the left side of the frame member, the lens barrel is thinned. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to the structure of a lens barrel, and more particularly to the arrangement of an electrical component on the lens barrel.
[0002]
[Prior art]
Conventionally, since a shutter mechanism, an aperture mechanism, a focus mechanism, a zoom mechanism, and the like are arranged in a lens barrel, it is necessary to arrange a drive source and a position detecting means for driving them in the lens barrel. However, it is necessary to prevent a flexible printed circuit board (hereinafter, referred to as FPC) connected thereto from invading the imaging optical path.
[0003]
In the lens barrel disclosed in Patent Literature 1, a shutter driving FPC is connected to a shutter unit that moves forward and backward along the optical axis together with the lens frame, and the shutter driving FPC is a special FPC. The FPC is deformed in such a manner that it does not enter the photographing optical path with the movement of the shutter unit.
[0004]
Further, in the lens barrel disclosed in Patent Document 2, approximately four sides of the lens barrel in a state where a zoom motor, a focus motor, a zoom and focus reset sensor, and an IG meter (variable aperture drive source) are fixed to a fixed member. Each is located at a corner of the shape. In this conventional example, the electric member is attached to a fixed member, so that it is not necessary to move the connection FPC in the lens barrel, and it is not necessary to prevent the FPC from entering the optical path.
[0005]
Further, the lens barrel disclosed in Patent Document 3 has a focus frame with a shutter unit that moves forward and backward along the optical axis (that is, a focus lens frame). The solenoid for driving the shutter unit and the focus A focus motor for driving the frame is fixed to the fixed frame. Also in this lens barrel, there is no need to move the connection FPC in the lens barrel, and there is no need for a structure for preventing the FPC from entering the optical path.
[0006]
[Patent Document 1]
Patent Document 1 is Japanese Patent Application Laid-Open No. 5-134159.
[0007]
[Patent Document 2]
Patent Document 2 is Japanese Patent Application Laid-Open No. H11-84209.
[0008]
[Patent Document 3]
Patent Document 3 is Japanese Patent Application Laid-Open No. 6-242491.
[0009]
[Problems to be solved by the invention]
In the lens barrel according to Patent Document 1, since the FPC that moves inside the lens barrel is arranged, a structure that prevents the FPC from acting as a driving load and preventing the FPC from entering the imaging optical path. Therefore, it was difficult to reduce the size of the lens barrel. In addition, it is necessary to secure a space in which the zoom motor and the focus motor are displaced together with the moving lens frame, which also hinders miniaturization. Further, the FPC may be damaged by repeatedly moving the lens frame forward and backward.
[0010]
In the lens barrel according to Patent Document 2, since the electric components such as the motor are mounted on a fixed frame, the connection FPC does not move in the lens barrel. Since a drive source such as a motor is arranged at each corner of the substantially rectangular parallelepiped shape of the lens barrel, it is difficult to reduce the size of the lens barrel, particularly to reduce the thickness. Further, since the motor is exposed to the outside, there is a risk of damage due to intrusion of dust or impact.
In the lens barrel according to Patent Document 3, the focus motor and the shutter driving solenoid are mounted on the fixed frame, which is another frame, with respect to the movable focus frame. However, only a part of the lens barrel is shown, and no layout of the connection FPC to the focus motor or the like is shown.
[0011]
On the other hand, conventional silver halide film cameras, digital cameras, cameras including video cameras and the like are required to be further reduced in size, particularly thinner, and in order to achieve this, the lens barrel must be reduced in size, Thinning is indispensable.
[0012]
The present invention has been made in view of the above circumstances, and provides a lens barrel that improves the arrangement of electrical components in the lens barrel, has high reliability, and can be reduced in size and thickness. The purpose is to do.
[0013]
[Means for Solving the Problems]
A lens barrel according to claim 1 of the present invention, a reflecting optical member that reflects a light beam from a subject along a first optical axis along a second optical axis that intersects the first optical axis, A first holding frame for holding the reflecting optical member, a plurality of lens groups arranged along the second optical axis, and one of the plurality of lens groups, A second holding frame that is displaceably held along the optical axis, a frame member that movably contains the second holding frame, and that fixes the first holding frame; and a second holding frame. And a drive source for driving the second holding frame, the drive source being substantially parallel to an optical axis surface formed by the first optical axis and the second optical axis. A motor unit fixed to the inside of the first outer wall of the frame member, and substantially perpendicular to the optical axis surface and adjacent to the first outer wall. Detecting means for detecting the position of the second holding frame, the detecting means being provided on a second outer wall of the formed frame member. Is driven back and forth along the optical axis of.
[0014]
A lens barrel according to a second aspect of the present invention is the lens barrel according to the first aspect, further comprising an insertion hole formed in the first outer wall, and the motor unit being exposed from the insertion hole. And a connecting portion of the detecting means is arranged on an outer surface side of the frame member, and covers a part of the first outer wall and a part of the second outer wall. The motor terminals and the detection means are connected to the flexible printed circuit board arranged in the above.
[0015]
The lens barrel according to a third aspect of the present invention is the lens barrel according to the second aspect, further displaceably integrated with the second holding frame in the second optical axis direction. And a shutter driving source fixed to the first holding frame, and the shutter driving source is connected to the flexible printed circuit board.
[0016]
A lens barrel according to a fourth aspect of the present invention is the lens barrel according to the third aspect, wherein the shutter drive source is disposed on a side where the motor unit is disposed with respect to the second optical axis. .
[0017]
The lens barrel according to claim 5 of the present invention is the lens barrel according to any one of claims 1 to 4, wherein the frame member has a substantially rectangular parallelepiped shape, and the first outer wall has a thickness of the rectangular parallelepiped shape. An outer wall extending in the direction.
[0018]
The lens barrel according to claim 6 of the present invention is a lens barrel formed in a substantially rectangular parallelepiped shape, and receives the subject light incident along a first optical axis that is a thickness direction of the lens barrel. A reflective optical member that intersects the first optical axis and reflects toward a second optical axis along the longitudinal direction of the lens barrel; a first holding frame that holds the reflective optical member; A plurality of lens groups arranged along the second optical axis, and a second holding unit for holding one of the plurality of lens groups so as to be displaceable along the second optical axis. A frame, a third holding frame for holding another one of the plurality of lens groups so as to be displaceable along the second optical axis, and a substantially rectangular parallelepiped; A frame member for movably enclosing the third holding frame, and for driving the second and third holding frames. Thus, the driving unit and the driving unit are fixed inside the first outer wall of the frame member formed substantially parallel to the optical axis surface formed by the first optical axis and the second optical axis. A motor consisting of a shaft and a bearing that rotates upon receiving an output from the motor, wherein the motors are opposed to each other, the shafts are arranged in parallel, and the other shaft at the bearing A motor unit adapted to receive the second and third holding frames on a second outer wall substantially perpendicular to the optical axis surface and adjacent to the first outer wall. Detecting means for detecting the positions of the second and third holding frames, the detecting means being provided at a position opposed to the movement trajectory, wherein the second and third holding frames are driven by the motor; Driven forward and backward along the second optical axis via the shaft, and the second and third holding thereof Movement position of can be detected by the detection means.
[0019]
A lens barrel according to a seventh aspect of the present invention is the lens barrel according to the sixth aspect, further comprising an insertion hole formed in the first outer wall, and the motor being exposed from the insertion hole. A motor terminal provided in the unit, wherein the connection portion of the detection means is arranged so as to be located on the outer surface side of the frame member, and is connected to the first outer wall and the second outer wall. The motor terminal and the detection means are connected to a flexible printed circuit board arranged to cover the portion.
[0020]
The lens barrel according to an eighth aspect of the present invention is the lens barrel according to the seventh aspect, further arranged so as to be integrally displaceable with the second holding frame in the second optical axis direction. A shutter drive source fixed to the first holding frame; and the shutter drive source is connected to the flexible printed circuit board.
[0021]
In a lens barrel according to a ninth aspect of the present invention, in the lens barrel according to the seventh or eighth aspect, two shafts of the motor unit are arranged side by side along the first outer wall direction. Is done.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of an electronic camera incorporating a lens barrel according to an embodiment of the present invention.
[0023]
In the following description, as shown in FIG. 1, the direction along the first optical axis O1, which is the incident direction of the subject light beam, is defined as the Z direction, and the Z (+) direction on the subject side of the electronic camera is defined as the forward direction. The Z (-) direction on the camera rear side is defined as the rear. The vertical direction in the direction perpendicular to the Z direction is defined as the Y direction, the Y (+) direction is defined as the upward direction, and the Y (-) direction is defined as the downward direction. In the direction perpendicular to the Z direction, the left-right direction is defined as the X direction, the X (+) direction is defined as the right direction, and the X (-) direction is defined as the right direction when the camera is viewed from the subject side.
[0024]
As shown in FIG. 1, the electronic camera 1 of the present embodiment is a so-called digital camera, which has a front cover 2 and a rear cover 3 as exterior members, and is housed in the front cover 2 and the rear cover 3. A lens barrel 10, an electric board unit 5, a power supply unit 6, a strobe unit 7, a strobe charging capacitor 8, an LCD unit 9 as a display unit, and a base frame 24 as constituent units. Do it.
[0025]
On the front cover 2, a photographing window 2a for taking in a subject light beam and a strobe light emission window 2b are arranged on the front surface thereof.
[0026]
The rear cover 3 is provided with a two-step release button 26 and a power button 27 for turning on / off the power supply on its upper surface, and has an LCD opening 3a on its rear surface.
A transparent plate 4 as a transparent member is fixed to the rear surface of the rear cover 3 so as to cover the LCD opening 3a.
[0027]
The lens barrel 10 has a front surface along the X and Y planes when the camera is mounted, has a substantially rectangular parallelepiped outer shape having a longitudinal direction in the Y direction and a relatively small thickness in the Z direction. Above it, a prism 33 of a reflection optical member that forms a bending optical system for taking in a subject light beam along the first optical axis O1 (Z direction) is housed. An inclined surface 31c (FIG. 3) is formed at the rear of the upper surface of the lens barrel.
[0028]
In the lens barrel 10, the subject light flux in the direction of the first optical axis O1 captured by the prism 33 is reflected in the direction of the second optical axis O2. And is converted into an image pickup signal of a subject image. The detailed structure will be described later.
[0029]
The electric board unit 5 has three printed boards 18, 19, 20 on which the control elements of an electric circuit of an electronic camera, which will be described later, are mounted. Inside the substrate 20, a recording media slot 21 is mounted. The printed circuit boards 18, 19, 20 are connected and connected by flexible printed circuit boards (hereinafter, referred to as FPC) 22, 23, and are housed in a three-layered state in the direction of the optical axis O1.
[0030]
The power supply unit 6 includes a battery case 11 and a camera power supply battery 12 that is inserted into and stored in the battery case 11, and has a flat surface extending in the XY plane. , A rectangular parallelepiped shape having a relatively small thickness in the Z direction.
[0031]
The strobe unit 7 includes a strobe main body 13 and a strobe light emitting tube 14 supported inside a reflector of the strobe main body 13.
[0032]
The LCD unit 9 includes an LCD display panel 15 which is a liquid crystal display panel having a display surface along the X and Y planes, an LCD illumination light source 16 disposed above the LCD display panel 15 and extending in the X direction. And a light guide plate 17 that covers the substantially LCD display plate 15 on the side opposite to the display surface. The light guide plate 17 is a member whose thickness changes in the Y direction. The light guide plate 17 has a thicker upper portion on the light source side and a thinner portion on the lower side.
[0033]
A description will be given of the state of storage of the above-described constituent units in the front and rear covers 2 and 3. (Second outer wall 32j) is applied and fastened and fixed with screws 25. The printed circuit board 20 side of the electric board unit 5 is fastened and fixed together with the media slot 21 with screws 25 in a state adjacent to the lens barrel 10 on the left side of the base frame 24. Further, the power supply unit 6 is fastened by screws 25 in a state adjacent to the lens barrel 10 on the right side of the base frame 24, and the lens barrel 10, the electric board unit 5, and the power supply unit 6 are integrated. Further, the strobe unit 7 is fixed to the upper part of the power supply unit 6, and the strobe charging capacitor 8 is fixed in a state of entering from behind the strobe unit 7 to behind the upper inclined surface 31c of the lens barrel 10.
[0034]
On the other hand, the LCD unit 9 is fixedly arranged inside the rear cover 3 with the display surface of the LCD panel 15 facing the opening 3a.
[0035]
The base frame 24 to which the lens barrel 10, the electric board unit 5, and the power supply unit 6 are attached is housed in a state sandwiched between the front cover 2 and the rear cover 3, and the front cover 2 and the rear cover 3 are held. And the electronic camera 1 is completed.
[0036]
In the retracted state, the entrance opening of the prism 33 of the lens barrel 10 is arranged to face the imaging window 2a of the front cover 2, and the light emitting unit of the strobe unit 7 is arranged behind the strobe light emission window 2b. . Further, the LCD unit 9 is positioned so as to overlap the battery unit 6 and the lens barrel 10, and is positioned to face the LCD opening 3 a of the rear cover 3.
[0037]
The Z-direction thickness of the lens barrel 10, the power supply unit 6, and the LCD unit 9 in the housed state is substantially equal to the Z-direction thickness (occupied space) of the electric board unit 5. The heights of the lens barrel 10 and the LCD unit 9 in the Y direction are substantially equal.
[0038]
Here, an electric circuit of the electronic camera 1 of the present embodiment will be described with reference to a block configuration diagram of FIG.
The electronic camera 1 of the present embodiment has a built-in CPU 170 as a control means, and the CPU 170 controls all control elements of the electronic camera 1.
[0039]
First, an image of a subject that has passed through the photographing optical system 111 is converted into an electric signal by the CCD 55 serving as an image sensor under the control of the CPU 170. The electric signal converted by the CCD 55 is converted into an analog image signal by the imaging circuit 113, and then converted into a digital image signal by the A / D conversion circuit 114. The digital image signal is recorded via an interface (I / F) 121 on a recording media card (memory card) 120 as a recording medium such as a removable flash memory card or a smart memory card as an external memory. Is done. Note that the recording media card 120 is detachable from the media slot 21.
[0040]
Further, the electric circuit of the electronic camera 1 is provided with a built-in memory 130 and an image processing circuit 140 having a high processing speed. For the built-in memory 130, for example, a random access memory (RAM) or the like is applied. It is used as a working memory in processing or as a high-speed buffer of a temporary image storage unit. Further, the image processing circuit 140 performs processes such as conversion into RGB signals, conversion of the number of pixels, data compression and decompression based on the image data digitized by the A / D conversion circuit 114.
[0041]
Further, the electronic camera 1 is equipped with the above-mentioned image display LCD display panel 15 (liquid crystal display device). The LCD display panel 15 is used to check images recorded on the memory card 120 and to take images. The image of the subject to be displayed is displayed. The image displayed on the LCD display board 15 is an image that is temporarily converted into a video image by the video output circuit 152 and then displayed after the image information from the built-in memory 130 is temporarily loaded into the video memory 151. The video output circuit 152 can also output a video image to an external display device via a video output external terminal 153.
[0042]
The CPU 170 captures a shooting start signal by operating the release button 26, captures an image with the CCD 55, captures a setting signal of various modes of the operation unit 173 by operating a mode setting button (not shown), and sets a shooting mode. . The setting mode is displayed on the mode LCD 172. Further, based on the control of the CPU 170, when the light quantity at the time of imaging the subject is insufficient, the strobe light emitting tube 14 of the strobe unit 7 is turned on, and strobe shooting is performed.
[0043]
Further, the CPU 170 is connected via a driver 171 to first and second stepping motors 53 and 54 which are lens driving sources for performing focusing driving and zoom driving of the photographing optical system. Is
[0044]
In addition, the CPU 170 is connected to a subject light quantity adjusting device, which is an ND filter solenoid 51 for driving an ND filter unit and a shutter solenoid 52 for driving a shutter unit, via a driver 171. The light quantity adjustment drive by the solenoid is performed.
[0045]
Further, the CPU 170 is connected to photoreflectors (hereinafter, referred to as PR) 58, 59, which are detection means for detecting a reset position of the advancing / retreating movement of the photographing optical system. The reset position is detected when the photographing lens system 111 is reset.
[0046]
An external interface (external I / F) 161 is connected to the external input / output terminal 160, and inputs and outputs data to and from an external device. For example, a personal computer or the like is connected to the external input / output terminal 160, and the image in the memory card 120 is transferred to the personal computer or the like, and image data is taken in from the personal computer or the like.
[0047]
Further, power from the battery 12 of the power supply unit 6 is supplied to each control element of the electronic camera 1 via the power supply unit 180 and driven. The battery 12 can be charged under the control of the power supply unit 180.
[0048]
Next, a detailed structure of the lens barrel 10 will be described with reference to FIGS.
3 and 4 are exploded perspective views of the lens barrel as viewed from the rear side. FIG. 5 is a longitudinal sectional view of the lens barrel in a wide state when viewed from the front side. FIG. 6 is a longitudinal sectional view of the lens barrel in a telephoto state when viewed from the front side. 7 is a sectional view taken along the line AA in FIG. 5, FIG. 8 is a sectional view taken along the line DD in FIG. 6, and FIG. 9 is a sectional view taken along the line BB in FIG. FIG. 10 is an exploded perspective view around the first group frame (ND filter unit) of the lens barrel. FIG. 11 is a view as viewed in the direction of the arrow C in FIG. 5 and shows a rotation range of the shutter drive arm. FIG. 12 is an exploded perspective view around the shutter unit. FIG. 13A is a view taken along the line EE in FIG. 12 and shows a shutter open state. FIG. 13B is a view taken along the line EE in FIG. 12 and shows a shutter closed state. FIG. 14A is an enlarged sectional view of the shutter drive arm. FIG. 14B is an enlarged cross-sectional view showing a state where the shutter drive arm and the shaft are mounted on a shaft bonding and fixing jig. FIG. 15 is a perspective view of the lens barrel with the connection FPC mounted thereon as viewed from the front side, and FIG. 16 is a perspective view of the lens barrel with the connection FPC mounted thereon as viewed from the rear side.
[0049]
The lens barrel 10 has a first group frame 31 as a first holding frame and a fixed frame 32 as a frame member as shown in FIG. 5 and the like, and is built in the first group frame 31. The members include a prism 33 as a reflection optical member, a first lens group 34, an ND filter unit 47 as a light amount adjusting unit, an ND filter rotary solenoid (hereinafter referred to as a solenoid) 51 as a filter driving source, and a shutter. And a shutter solenoid 52, which is a driving source for driving (sector driving source). Further, a member provided inside the fixed frame 32 includes a shutter unit 48 which is a light amount adjusting means (shutter means) along the optical axis O2, and a second holding frame (first movable holding The second group lens 35 of the zoom lens group held by the second group frame 38 as a frame, and further held by the third group frame 39 as a third movable holding frame (second movable holding frame). A third group lens 36 of a zoom and focus lens group, a fourth group lens 37 held in the lower opening 32b of the fixed frame 32, and an image pickup mounted on the CCD substrate 56 and located at an image forming position of a subject light flux. Element CCDs 55 are arranged in order. Further, a suspension shaft 41 and a rotation stop shaft 42, both ends of which are fixedly held on the left and right sides along the second optical axis O2 (that is, the Y direction), and a zoom drive for driving the second group frame 38 forward and backward. A first stepping motor 53 as a first lens driving source constituting a motor unit, and a second lens driving source constituting a motor unit for zoom and focus driving for driving the third group frame 39 forward and backward. A second step motor 54, and further a compression spring 46 inserted between the second group frame 38 and the third group frame 39 and the like. On the back side of the fixed frame 32, a fixed lid 89 made of a metal plate is mounted and fixed. On the front surface side of the fixed frame 32, an FPC 86 on which an electric connection portion such as a connection terminal of each drive source and a sensor is mounted is arranged.
[0050]
The first holding frame 31 is composed of a rectangular parallelepiped outer shape portion and a triangular prism shape outer shape portion having an inclined surface 31c along the outer shape of the prism 33 housed in a part of the rear surface side and having an axial direction X direction. The prism, the first group lens, the ND filter unit, the solenoid, and the like are housed therein, and the upper part of the fixed frame 32 is fastened and coupled with screws by screw insertion holes 31f and screw screw holes 32f. .
[0051]
The prism 33 is inserted into and fixed to the front opening 31a of the first group frame 31. The subject light beam incident along the optical axis O1 is bent at an angle of 90 ° by the prism 33, and reflected toward the lower opening 31b along the second optical axis O2 (Y direction).
[0052]
The first group lens 34 is inserted and held below the lower opening 31 b of the first group frame 31.
[0053]
The ND filter unit 47 is incorporated on the lower surface side of the first group frame 31 and is movable in a direction substantially perpendicular to an optical axis plane including the optical axis O1 and the optical axis O2 in order to adjust the amount of subject light. Is provided. Details of the structure will be described later.
[0054]
The ND filter solenoid 51 and the shutter solenoid 52 are arranged in a united state on the left side of the prism 33 in the first group frame 31 in parallel along the first optical axis O1. The output shafts 51a and 52a are arranged to protrude in the direction of the optical axis O2 below the first group frame 31 (FIG. 10). A pinion 61 is fixed to the output shaft 51a of the ND filter solenoid 51. On the other hand, a shutter drive arm 71, which is a driving force transmitting member, is fixed to the output shaft 52a of the shutter solenoid 52. At the tip of the arm portion of the shutter drive arm 71, a shaft portion 72 formed of a hollow shaft member having a predetermined length corresponding to the advance / retreat movement position of the second group lens is fixed. The output shafts 51a and 52a are rotationally driven by the forward and reverse rotations of the solenoid, whereby the pinion 61 or the shutter drive arm 71 is rotated two times between an open position and a closed position. It is rotationally driven to the moving position. The operation of the ND filter unit and the shutter unit by the pinion 61 and the shaft 72 will be described later.
[0055]
The second group frame 38 has an opening 38a in the upper center, two guide holes 38c penetrating along the Y direction, a rotation stop notch 38g on the opposite side of the guide hole 38c, and a lead screw insertion notch 38d. , A lever rotation shaft hole 38e, four stepped pins 38b, and locking projections 38f on both end surfaces in the Z direction (FIG. 12). In addition, in the second group frame 38, in addition to the second group lens 35 serving as a zoom lens, the shutter unit 48 is disposed on the upper surface on the opening 38a side, and the sector drive lever 43 is rotatable in the lever shaft hole 38e. Is inserted into. The second group frame 38 is supported by a suspension shaft 41 and a rotation stop shaft 42 slidably fitted in the guide holes 38c and the notches 38g, respectively, so as to be able to advance and retreat along the optical axis O2.
[0056]
The shutter unit 48 has first and second sectors 74 and 76, which are two shielding members that can be opened and closed in a direction perpendicular to the optical axis plane including the optical axis O1 and the optical axis O2. Details of the structure will be described later.
[0057]
The third group frame 39 has two guide holes 39b penetrating along the Y direction, a rotation stop notch 39c facing the guide hole 39b, and a lead screw insertion notch 39d. Is mounted with a third group lens 36 serving as a zoom and focus lens.
[0058]
The first stepping motor 53 includes a motor body, a rotor portion 53c to which the lead screw shaft 81 is fixed, a coil portion 53b provided with a bearing portion 53a for supporting another shaft at a distal end thereof, and four coils. And a connection terminal 53d (FIGS. 5 and 9).
[0059]
The second stepping motor 54 includes a motor body, a rotor portion 54c to which the lead screw shaft 83 is fixed, and a coil portion 54b having a bearing portion 54a for supporting another shaft at the distal end thereof. (See FIGS. 5 and 9).
[0060]
As shown in FIGS. 5 and 9, the first and second step motors 53 and 54 are fixedly supported inside a left side wall 32k, which is a first outer wall of the fixed frame 32, via a motor mounting plate 85. That is, the first and second stepping motors 53 and 54 are located on the left side of the position where the second and third group frames 38 and 39 of the fixed frame 32 are disposed, and below the solenoids 51 and 52. The lead screw shafts are opposed to each other below and above the linear region parallel to the rotor section 53c and the coil section 53b, and the rotor section 54c and the coil section 54b are disposed on the optical axis surface including the optical axis O1 and the optical axis O2. The stepping motor is mounted by attaching the motor mounting plate 85 to the upper and lower ends of the motor mounting plate 85 in a state of being aligned with the positioning pins 32p and fixing the motor mounting plate 85 inside the left side wall portion 32k with screws 49.
[0061]
In the step motor mounting support state, the first step motor 53 is positioned below with the lead screw shaft 81 facing upward, the second step motor 54 is positioned with the lead screw shaft 83 facing downward, and The distal ends of the lead screw shafts 81 and 83 are rotatably fitted to and supported by bearing portions 54a and 53a of the other step motors 54 and 53, respectively.
[0062]
Accordingly, the lead screw shafts 81 and 83 are arranged in a state parallel to the optical axis plane including the optical axis O1 and the optical axis O2 and in a state parallel to the optical axis O2 when the step motors 53 and 54 are mounted. You. The lead screw shafts 81 and 83 are arranged in parallel in the direction of the optical axis O2. Further, the solenoids 51 and 52 and the step motors 53 and 54 are arranged on one linear region parallel to the side of the optical axis O2.
[0063]
A second group frame drive nut 82 is screwed and fitted to the lead screw shaft 81, and a third group frame drive nut 84 is screwed and fitted to the lead screw shaft 83. The upper surface 38h (FIG. 12) of the notch 38d of the second group frame 38 inserted across the lead screw shaft 81 is pressed against the lower surface of the screwed second group frame drive nut 82 by the urging force of the compression spring 46. And is urged upward. The lower surface 39h of the cutout 39d of the third group frame 39 inserted across the lead screw shaft 83 abuts on the upper surface of the screwed third group frame drive nut 84 by the urging force of the compression spring 46. It is urged downward.
[0064]
As described above, by the movement of the drive nuts 82 and 84, the second and third group frames 38 and 39 are driven forward and backward, and the play of the drive nuts 82 and 84 and the lead screw shafts 81 and 83 is reduced. Approached.
[0065]
Therefore, when the lead screw shaft 81 is rotated by the step motor 53, the second group frame 38 is moved along the optical axis O2 from the wide position (reset position) of FIG. It is driven forward and backward. Similarly, when the lead screw shaft 83 is rotated by the step motor 54, the third group frame 39 is moved along the optical axis O2 from the wide position (reset position) of FIG. It is driven between forward and backward. During the reset processing operation of the step motors 53 and 54, the second group frame 38 and the third group frame 39 move in the reset direction, and reach the respective reset positions. The arrival at the reset position is detected by (described) 58 and 59 (FIGS. 7 and 15).
[0066]
As described above, at the time of zooming, the second group frame 38 that holds the second group lens 35 as a zoom lens by driving the step motors 53 and 54 and the third group frame 39 that holds the third group lens 36 for zooming and focusing. Drive. At this time, based on the reset positions detected by the PRs 58 and 59, the drive amounts of the second group frame 38 and the third group frame 39 can be determined from the number of drive steps of the step motors 53 and 54. The zoom state of the system is calculated.
[0067]
The focus drive is performed by driving the drive step motor 54 to displace the third lens group frame 39 in the direction of the optical axis O2.
[0068]
The ND filter unit 47 is disposed between the lower surface of the first group frame 31 and the upper surface of the fixed frame 32, and as shown in an exploded perspective view of FIG. 10, an idle gear 62 meshing with an output pinion 61 of the ND filter solenoid 51. An ND filter drive gear 63 meshing with the idle gear 62; a base plate 64 attached to the first group frame 31 and holding the gear; a filter drive arm 65 having pin holes 65a and 65b at both ends; An ND filter flaw prevention sheet 66 having 66a, a pin hole 66b, and a long hole 66c in the X direction, an ND filter 67 having a pin hole 67b, a long hole 67c in the X direction, and a caulking pin 68 are provided. .
[0069]
A pin hole 65a at one end of the filter drive arm 65 is fitted into a drive pin 63a of the filter drive gear 63, and is integrally supported by the filter drive gear 63. The caulking pin 68 is swaged and fixed to the pin hole 65b of the filter drive arm 65 while being rotatably fitted in the pin hole 67b of the ND filter 67 and the pin hole 66b of the ND filter flaw prevention sheet 66. . Further, the ND filter flaw prevention sheet 66 and the ND filter 67 are supported such that their long holes 66c and 67c are slidably fitted into the guide pins 31e of the first group frame 31. Note that a support sheet 78 (FIGS. 3 and 4) with an ND filter protection sheet 79 having a central opening is disposed on the lower surface of the ND filter 67 on the side of the opening 32a of the fixed frame 32. It is arranged on a plane orthogonal to the optical axis O2, and is slidable in the X direction along that plane.
[0070]
In the light amount adjustment operation by the ND filter unit 47 having the above-described configuration, when the ND filter solenoid 51 is rotationally driven clockwise as viewed from below in FIG. It is rotationally driven clockwise as viewed from below in FIG. 10 (the direction in which the ND filter enters). Then, the ND filter flaw prevention sheet 66 and the ND filter 67 are integrally slid in the X (+) direction (that is, the optical axis plane including the optical axes O1 and O2, that is, the direction orthogonal to the YZ plane), The ND filter 67 moves from the position retracted from the opening 32a of the fixed frame 32 to the entrance position covering the opening 32a, and the reduced subject light amount enters the second group lens 35 side. Conversely, when the ND filter solenoid 51 is rotationally driven counterclockwise as viewed from below in FIG. 10, the ND filter flaw prevention sheet 66 and the ND filter 67 move in the opposite direction ( The ND filter 67 slides in the X (-) direction, moves to the retreat position where the ND filter 67 retreats from the opening 32a of the fixed frame 32, and enters a state in which the total incident light amount of the subject light flux is emitted to the second group lens 35 side.
[0071]
The shutter unit 48 is a unit mounted on the upper part of the second group frame 38, as shown in FIG. 12, and includes a central opening 73a, four support holes 73b, a circular arc groove 73c for escape, and a pair of opposed bending portions. A shutter lid 73 provided with a stop hole 73d, a first guide 74 provided with a linear guide elongated hole 74b in the X direction, an engagement elongated hole 74c serving as an engagement hole in the Z direction and a shielding portion, and a shutter opening diameter; A first blade sheet 75 provided with an opening 75a, a mounting elongated hole 75b, and a circular arc groove 75c for escape, a linear guide elongated hole 76b in the X direction, an engagement elongated hole 76c as an engagement hole in the Z direction, and A second sector 76 in which a shielding portion is provided; a second blade sheet 77 in which an opening 77a having a larger diameter than the opening 75a, a mounting elongated hole 77b, and an escape arc groove 77c are provided; Rotating shaft portions 43a, made and a sector drive lever 43 of the sector drive member driven elongated hole 43 b, 2 pieces of the sector drive pin 43c is engaged shaft, 43d are provided.
[0072]
The two mounting slots 75b and 77b provided in the first and second blade sheets 74 and 75 respectively are positioned so that one of them is positioned with the stepped pin 38b and the other is slightly loose. It is formed.
[0073]
The sector drive lever 43 has its rotation shaft portion 43a penetrated through the shutter lever rotation shaft hole 38e of the second group frame 38, and the stopper ring 45 is locked at the tip of the shaft portion. When the sector drive lever 43 is mounted, the second blade sheet 77, the second sector 76, the first blade sheet 75, and the first sector 74 are sequentially applied to the stepped pins 38 b of the second group frame 38 from above the second group frame 38. Insert. At this time, one of the sector drive pins 43c of the sector drive lever 43 is sequentially inserted from below into the escape arc grooves 77c and 75c and the engagement elongated hole 74c, and at the same time, the other sector drive pin 43d is inserted into the engagement elongated hole 76c. Let it. Finally, the shutter lid 73 is put on from above, and the locking holes 73d are engaged with the locking projections 38f of the second group frame 38, so that the shutter unit 48 is mounted. In this state, the sector drive pin 43c is inserted into the escape arc groove 73c. A shaft portion 72 of a shutter drive arm 71, which will be described later, is slidably fitted in the driven long hole 43b of the sector drive lever 43. The sectors 74 and 76 of the unit 48 are slid.
[0074]
The shaft portion 72 is fixed to the shutter driving arm 71 at a position separated from the center of the rotation axis of the shutter driving arm 71 by a predetermined distance in a direction extending in a direction parallel to the optical axis O2. Accordingly, the length is set such that the shaft portion 72 is always in the engaged state in which the shaft portion 72 is always fitted into the driven long hole 43b of the sector drive lever 43 even when the second group frame 38 moves forward and backward in the direction of the optical axis O2.
[0075]
As shown in FIG. 14A, which is an enlarged sectional view of the shutter driving arm and the shaft, the shaft 72 is inserted into a shaft hole 71a at the tip of the arm 71, and an adhesive is injected into the fitting gap. To be fixed. When the shutter drive arm 71 and the shaft 72 are bonded as shown in FIG. 14B, the shutter drive arm 71 is mounted on a holding frame 91a formed on an adhesive fixing jig 91, and the shaft 72 is fixed to the jig. The holder 91 is fitted and held in the shaft holding hole 91b, and is inserted into the shaft hole 71a. The shaft hole 71a and the shaft portion 72 have a gap for adjusting the positional accuracy, and the shaft portion 72 is supported by being spaced apart from the shutter drive arm 71 by a predetermined distance and in parallel. In the supported state, an adhesive is injected into the shaft hole 71a, and the shaft portion 72 is bonded and fixed to the shutter drive arm 71. When the shutter drive arm 71 is incorporated in the fixed frame 32, the shaft is separated from the shutter drive arm 71 by a predetermined distance and is supported in a state parallel to the optical axis O2.
[0076]
Although the shutter drive arm 71 is in the substantially same area on a plane orthogonal to the optical axis O2 where the second step motor 54 is located in the assembled state, the second step motor 54 avoids the swing locus of the shaft portion 72. Placed at the right position. At the same time, the swing trajectory of the shaft portion 72 is in a region avoiding the position of the suspension shaft 41.
[0077]
The opening / closing rotational position of the shutter drive arm 71 is defined by a regulating projection of an opening 32g of the fixed frame 32 as shown in FIG. That is, the shutter drive arm 71 is inserted through the opening 32g having the two regulating protrusions 32i and 32h of the fixed frame 32, and when the shutter drive arm 71 rotates in the opening direction (clockwise in FIG. 11). The tip of the shutter drive arm 71 is in contact with the restricting projection 32i to define the open rotation position of the shutter drive arm 71. When the shutter drive arm 71 rotates in the closing direction (counterclockwise in FIG. 11), the tip of the shutter drive arm 71 comes into contact with the regulation protrusion 32h, and the closing rotation position of the shutter drive arm 71 is defined.
[0078]
Further, the shutter unit 48 is arranged along the upper surface of the second group frame 38, and moves forward and backward in the direction of the optical axis O2 integrally with the second group frame 38. Therefore, the first and second sectors 74 and 76 are always held along a plane orthogonal to the optical axis O2, and slide on the plane.
[0079]
In the shutter opening / closing operation of the shutter unit 48 having the above configuration, when the shutter is closed from the closed state shown in FIG. 13B and the shutter is opened in FIG. 13A, the output shaft 52a of the shutter solenoid 52 is rotated counterclockwise. When driven upward (FIG. 13B), the sector drive lever 43 is driven to rotate clockwise through the shaft 72 of the shutter drive arm 71. As shown in FIG. 13A, the sector drive lever 43 rotates clockwise to move the first sector 74 and the second sector 76 by the sector drive pins 43c and 43d in the X (+) and X (-) directions, respectively. (Ie, in a direction perpendicular to the optical axis plane including the optical axis O1 and the optical axis O2), and the shutter is opened (maximum aperture diameter) to open the opening 75a of the blade sheet.
[0080]
When the shutter shaft 52 is changed from the shutter open state to the shutter close state shown in FIG. 13A, the output shaft 52a of the shutter solenoid 52 is driven clockwise (upward in FIG. 13A). The sector drive lever 43 is rotated counterclockwise via 72. By rotating the sector drive lever 43 counterclockwise, the sector drive pins 43c and 43d move the first sector 74 and the second sector 76 in the X (-) direction and X (+), respectively, as shown in FIG. ) (I.e., a direction orthogonal to the optical axis plane including the optical axis O1 and the optical axis O2), and the shutter sheet closes the opening 75a of the blade sheet.
[0081]
In the lens barrel 10, when assembling components such as a lens group and a step motor, the lens group, the step motor, and the like are inserted through an opening 32 g provided on the back side of the fixed frame 32, and assembled. Is performed. After the assembly is completed, a fixing lid 89 made of a metal plate is attached to the opening 32g, screws are inserted into the screw insertion holes 89d and 89e, and the fixing frame 32 is hermetically sealed by screwing into the fixing frame side screw holes 32d and 32e. State (FIG. 3).
[0082]
As shown in FIG. 15, the fixed frame 32 of the lens barrel 10 has a front wall portion 32j as a second outer wall along a plane (XY plane) orthogonal to the thickness direction of the fixed frame cuboid. Insertion holes 32r and 32s into which the group frame reset position detection PRs 58 and PR59 can be inserted are provided. The positions of the insertion holes 32r and 32s are positions where the detection surfaces when the second and third group frames 38 and 39 are at the reset position on the movement locus face each other.
[0083]
Further, as shown in FIG. 16, the left (right in FIG. 16) wall 32k which is adjacent to the front side wall 32j of the fixed frame 32 and is the first outer wall on the surface along the thickness direction of the rectangular parallelepiped. Terminal insertion holes 32m and 32n are provided at lower and upper positions. Four motor terminals 53d, 54d of a first step motor 53 and a second step motor 54 are inserted through the terminal insertion holes 32m, 32n, and are exposed outside the fixed frame. Further, the two lead wires 51b of the ND filter solenoid 51 and the two lead wires 52b of the shutter solenoid 52 are connected from the left side (the right side in FIG. 16) of the first holding frame 31 as shown in FIG. It is led out and guided to the upper part of the front wall part 32j.
[0084]
An ND filter solenoid lead wire connection land 86e and a shutter solenoid lead wire connection land 86f are provided above the connection FPC 86, and the surface mount type PRs 58 and 59 are mounted at the center. ing. Further, the two projections 86a, 86b of the connection FPC 86 are bent and attached from the surface of the front wall 32j to the surface of the left wall 32k of the fixed frame 32. The protrusions 86a and 86b are provided with a first step motor terminal connection land 86c and a second step motor terminal connection land 86d.
[0085]
When the connection FPC 86 is attached to the lens barrel 10, the connection FPC 86 is attached to the surface of the front side wall 32j of the fixed frame 32, and the mounted PRs 58, 59 are inserted into the insertion holes 32r, 32s of the fixed frame 32, respectively. insert. On the other hand, the protrusions 86a and 86b of the connection FPC 86 are bent from the front side of the front wall 32j of the fixed frame 32 and attached to the left wall 32k, and the motor terminals 53d and 54d are soldered to the motor terminal connection lands 86c and 86d. . Further, the lead wires 51b and 52b of the solenoids 51 and 52 are soldered to the solenoid lead wire connection lands 86e and 86f of the connection FPC 86. The connection FPC 86 is led out to the electric board side of the electric board unit 5 and is connected by a connector.
[0086]
Next, a photographing operation by the camera 1 of the present embodiment having the above-described configuration will be described.
The user turns on the power switch by operating the power button 27 on the rear cover, and inserts the memory card 120 into the card slot 21. When a mode setting button 27 (not shown) is operated, a shooting mode is selected and set by the CPU 170.
[0087]
Subsequently, when photographing is performed, the image of the subject luminous flux taken in through the prisms 33 and the first to fourth group lenses 34 to 37 is converted into an electric image pickup signal by the CCD 55 under the control of the CPU 170, and is stored in the built-in memory. The video signal is captured by 130. The video signal is displayed on the LCD panel 15 as a subject image. When the user performs an operation such as zooming to determine a subject to be photographed and a photographing angle of view, and presses the first step of the release button 26, the CPU 170 controls the shutter button 26 based on the contrast information of the video signal. Thus, the focusing drive of the third group lens 36 is performed. In the focusing drive and the zoom drive, the first and second step motors 53 and 54 are drive-controlled to move the second group frame 38 and the third group frame 39 to the advance / retreat positions along the respective optical axes O2. It is performed by moving. On the other hand, photometry of subject light is performed based on the captured video signal. When the subject brightness is higher than a predetermined value in the photometric data, the ND filter solenoid 51 is driven, and the ND filter 67 moves into a position covering the fixed frame opening 32a.
[0088]
Next, a photographing start signal is captured by the second-stage pressing operation of the release button 26, and after the shutter opening time based on the photometric data has elapsed, the shutter solenoid 52 is driven to close the first and second sectors 74 and 76. Position and the shutter is closed.
[0089]
During the shutter open period, the subject light flux taken in through the prism 33 passes through the taking lens system, forms an image on the image forming surface of the CCD 55, and performs exposure. Under the control of the CPU 170, an imaging signal within the exposure time is output from the CCD 55 and converted into a video signal. After the video signal is once recorded in the built-in memory 130, a predetermined process is performed by the image processing circuit 140 and recorded on the memory card 120, and the photographing is completed.
[0090]
As described above, according to the lens barrel 10 built in the camera of the present embodiment, the motor unit including the first and second step motors 53 and 54 is fixedly arranged along the left side wall 32k of the fixed frame 32, and Arranging the position detecting PRs 58, 59 of the third and third group frames 38, 39 on the front wall 32j of the fixed frame 3 is effective in reducing the thickness of the lens barrel.
[0091]
Further, the terminals of the motor unit are arranged outside the left side wall 32k of the fixed frame 32, and the front wall 32j adjacent to the left side wall 32k of the fixed frame 3 has an opening through which the position detecting PRs 58, 59 are inserted. Since the connection FPC 86 is provided, the size of the connection FPC 86 is reduced. Further, since the connection FPC 86 is disposed outside the fixed frame 32, it does not move in the lens barrel, does not hinder the operation of the lens barrel, and has a small size. Can be achieved.
[0092]
Further, since the shutter solenoid 52 serving as a driving source of the shutter unit 48 is disposed in the immovable first group frame 31, there is no movable FPC in the lens barrel, and the operation of the lens barrel is hindered. Therefore, the size of the lens barrel can be reduced from this point.
[0093]
【The invention's effect】
As described above, according to the lens barrel of the first aspect of the present invention, the motor unit is fixed along the first outer wall of the frame member, and the detecting means is adjacent to the first outer wall. By attaching the lens barrel to the second outer wall, the thickness of the lens barrel can be reduced. Further, since the motor itself is disposed in the frame member, the possibility of failure is low.
[0094]
According to the lens barrel according to the second aspect of the present invention, in addition to the effect of the lens barrel according to the first aspect, the motor unit and the detecting means are further provided on the first and second outer walls adjacent to the frame member. Since the terminals are located, the FPC can be reduced. Further, since the FPC is arranged outside the frame member, the operation of the lens barrel is not hindered, and the lens barrel can be downsized.
[0095]
According to the lens barrel according to the third aspect of the present invention, in addition to the effect of the lens barrel according to the second aspect, since the shutter drive source is disposed on the first holding frame that is immovable. The FPC to the shutter drive source does not move in the lens barrel, and the operation of the lens barrel is not hindered.
[0096]
According to the lens barrel of the fourth aspect of the present invention, in addition to the effect of the lens barrel of the third aspect, the shutter drive source is disposed on the motor unit side, so that The thickness can be reduced.
[0097]
According to the lens barrel described in claim 5 of the present invention, in addition to the effects of the lens barrel described in claims 1 to 4, in addition to the first outer wall, which is a rectangular parallelepiped-shaped outer wall of the frame member. By attaching the motor unit, the lens barrel can be made thinner.
[0098]
According to the lens barrel according to claim 6 of the present invention, the motor unit is attached to the first outer wall which is a rectangular parallelepiped-shaped outer wall of the frame member, and the detecting means is connected to the first outer wall. By attaching the lens barrel to a second outer wall adjacent to the lens barrel, the lens barrel can be made thinner.
[0099]
According to the lens barrel described in claim 7 of the present invention, in addition to the effect of the lens barrel described in claim 6, a connecting surface of the motor unit and the detecting means is further provided on the first and second outer walls of the frame member. Are arranged, the FPC can be reduced to a small size.
[0100]
According to the lens barrel according to the eighth aspect of the present invention, in addition to the effect of the lens barrel according to the seventh aspect, the FPC is connected to the shutter drive source fixed to the first holding frame. The FPC does not move in the lens barrel, and there is no possibility that the operation of the lens barrel is hindered.
[0101]
According to the lens barrel according to claim 8 of the present invention, in addition to the effects of the lens barrel according to claim 7 or 8, the space occupied by the shaft of the motor unit is further reduced, and The size can be reduced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an electronic camera incorporating a lens barrel according to an embodiment of the present invention.
FIG. 2 is a block diagram of an electric circuit of the electronic camera 1 of FIG.
FIG. 3 is an exploded perspective view of the lens barrel of the electronic camera of FIG. 1 as viewed from the rear side.
FIG. 4 is an exploded perspective view of the lens barrel of the electronic camera of FIG. 1 as viewed from the rear side.
5 is a longitudinal sectional view of the lens barrel of FIG. 3 in a wide state as viewed from the front side.
6 is a longitudinal sectional view of the lens barrel of FIG. 3 in a telephoto state when viewed from the front side.
FIG. 7 is a sectional view taken along the line AA of FIG. 5;
FIG. 8 is a sectional view taken along line DD of FIG. 6;
FIG. 9 is a sectional view taken along the line BB of FIG. 5;
10 is an exploded perspective view of the lens barrel of FIG. 3 around the first group frame (around the ND filter unit).
11 is a view taken in the direction of the arrow C in FIG. 5 and shows a rotation range of a shutter drive arm.
FIG. 12 is an exploded perspective view of the lens barrel of FIG. 3 around a shutter unit.
13 is a view taken in the direction of arrows EE in FIG. 12, wherein FIG. 13 (A) shows a shutter open state, and FIG. 13 (B) shows a shutter closed state.
14 is a diagram showing a shape of a shutter drive arm applied to the lens barrel of FIG. 3 and a state in which a mold for bonding and fixing is mounted, and FIG. 14 (A) is an enlarged sectional view of the shutter drive arm; FIG. 14B is an enlarged cross-sectional view showing a state in which the shutter drive arm and the shaft are mounted on an adhesive fixing jig.
FIG. 15 is a perspective view of a state in which a connection FPC is mounted on the lens barrel of FIG. 3 as viewed from the front side.
FIG. 16 is a perspective view of a state in which a connection FPC is mounted on the lens barrel of FIG. 3 as viewed from the rear side.
[Explanation of symbols]
31: first holding frame 32: fixed frame (frame member)
32j front wall portion (second outer wall)
32k: Left wall (first outer wall)
32m, 32n
… Terminal insertion hole (insertion hole)
33 ... Prism (reflective optical member)
35 ... two-group lens (plural lens groups)
36 ... 3 group lens (plural lens groups)
38 ... 2nd group frame (second holding frame)
39: 3rd group frame (third holding frame)
48 Shutter unit (shutter means)
52: Solenoid for shutter (drive source,
Drive source for shutter)
53 1st step motor (lens drive source, motor unit)
53d, 54d
... Motor terminal 54 ... Second step motor (lens drive source, motor unit)
58,59
... PR (detection means)
86 ... FPC for connection
(Flexible printed circuit board)
O1 First optical axis O2 Second optical axis

Claims (9)

A reflecting optical member for reflecting a light beam from the subject along the first optical axis along a second optical axis that intersects the first optical axis;
A first holding frame for holding the reflective optical member,
A plurality of lens groups arranged along the second optical axis;
A second holding frame that holds one of the plurality of lens groups so as to be displaceable along the second optical axis;
A frame member that movably includes the second holding frame and to which the first holding frame is fixed;
An optical axis disposed on a side of the second holding frame for driving the second holding frame, the optical source being formed by the first optical axis and the second optical axis; A motor unit fixed to the inside of the first outer wall of the frame member formed substantially parallel to the surface; and the frame member formed substantially perpendicular to the optical axis surface and adjacent to the first outer wall. Detecting means for detecting the position of the second holding frame, which is disposed on the second outer wall of
A lens barrel comprising: Further, an insertion hole formed in the first outer wall,
A motor terminal provided on the motor unit so as to be exposed from the insertion hole,
And a connection portion of the detection means is disposed on an outer surface side of the frame member, and is provided so as to cover a part of the first outer wall and a part of the second outer wall. The lens barrel according to claim 1, wherein the motor terminal and the detection means are connected to the lens barrel. A shutter means disposed so as to be integrally displaceable with the second holding frame in the second optical axis direction;
A shutter driving source fixed to the first holding frame,
3. The lens barrel according to claim 2, further comprising: a shutter driving source connected to the flexible printed circuit board. 4. The lens barrel according to claim 3, wherein the shutter driving source is disposed on a side where the motor unit is disposed with respect to the second optical axis. 5. The lens barrel according to any one of claims 1 to 4, wherein the frame member has a substantially rectangular parallelepiped shape, and the first outer wall is an outer wall extending in a thickness direction of the rectangular parallelepiped shape. A lens barrel formed in a substantially rectangular parallelepiped shape,
Subject light incident along a first optical axis that is a thickness direction of the lens barrel intersects the first optical axis and travels along a second optical axis along the longitudinal direction of the lens barrel. A reflective optical member that reflects toward
A first holding frame for holding the reflective optical member,
A plurality of lens groups arranged along the second optical axis;
A second holding frame that holds one of the plurality of lens groups so as to be displaceable along the second optical axis;
A third holding frame that holds another one of the plurality of lens groups so as to be displaceable along the second optical axis;
A frame member formed in a substantially rectangular parallelepiped shape and movably including the second and third holding frames;
The second and third holding frames are driven, and the frame member is formed substantially parallel to an optical axis surface formed by the first optical axis and the second optical axis. A motor fixed to the inside of the first outer wall, the motor including a driving unit, a shaft that receives an output from the driving unit and rotates, and a bearing unit. The motors oppose each other, and the shafts are parallel. And a motor unit arranged to receive the other shaft in the bearing portion,
Substantially orthogonal to the optical axis surface, on a second outer wall formed adjacent to the first outer wall, and disposed at a position facing a movement locus of the second and third holding frames; Detecting means for detecting the positions of the second and third holding frames;
A lens barrel comprising: Further, an insertion hole formed in the first outer wall,
A motor terminal provided on the motor unit so as to be exposed from the insertion hole,
And a connection portion of the detection means is arranged so as to be located on an outer surface side of the frame member, and is a flexible print arranged so as to cover a part of the first outer wall and a part of the second outer wall. 7. The lens barrel according to claim 6, wherein the motor terminal and the detection unit are connected to a substrate. Further, a shutter means arranged so as to be integrally displaceable with the second holding frame in the second optical axis direction,
A driving source for a shirt fixed to the first holding frame;
The lens barrel according to claim 7, further comprising: a shutter driving source connected to the flexible printed circuit board. 9. The lens barrel according to claim 7, wherein two shafts of the motor unit are arranged side by side along the first outer wall direction. 10.

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