JP2004184586A - Lens barrel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens barrel which can be miniaturized and which is extended at three or more stages. <P>SOLUTION: A first straight-moving member 200 and a first rotating member 210, a second straight-moving member 300 and a second rotating member 310, and a third straight-moving member 400 and a third rotating member 410 are paired and extended. A part 301 where the member 300 is movably engaged with the member 200 in an axial direction is arranged on an inner side in a radial direction than both of the members 210 and 310. A part 401 where the member 400 is movably engaged with the member 300 in the axial direction is arranged on the inner side in the radial direction than both of the members 310 and 410. Then, a stationary member 100 and the member 210, the member 210 and the member 300 and the member 310 and the member 400 are respectively coupled through a driving transmitting mechanism which converts rotational driving force into straight-moving driving force and transmits it. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lens barrel, and more particularly to a lens barrel suitable for a multi-stage zoom.
[0002]
[Prior art]
Conventionally, various lens barrels extending from a camera body have been proposed. For example, Patent Literatures 1 and 2 disclose a lens barrel with a two-stage extension. Patent Document 3 discloses a three-stage extended lens barrel.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-66081 [Patent Document 2]
JP 2001-183563 A [Patent Document 3]
JP-A-9-212290
Such an extension type lens barrel includes a pair of linearly moving members for regulating rotation and a rotating member that rotates relative to the linearly moving members, and includes a plurality of pairs that move integrally in the axial direction, and are adjacent to each other. Between the pairs, the rectilinear members move in tandem, the rotation of the rotating members moves in tandem, and the engagement of one of the adjacent members and the other rectilinear member causes each pair to move relative to each other in the axial direction and expand and contract. I do.
[0005]
[Problems to be solved by the invention]
A conventional lens barrel that extends three or more stages includes a configuration in which a linear member is disposed between rotating members in the front and rear stages.
[0006]
For example, when the rotating member of the other pair is screwed to the linear member of one pair so that the other pair extends from one pair in which the rotating member is arranged radially outward of the linear member, one of the pair is rotated. In order to transmit rotation between the rotating member and the other pair of rotating members, it is necessary to provide a space extending in a spiral shape in the one pair of rectilinear members.
[0007]
Since the stiffness of one pair of rectilinear members decreases due to the spiral space, for example, considering the case where an excessive force is applied to the lens barrel in the axial direction, the radial dimension of one pair of rectilinear members is However, there is a limit even if it is made smaller, and further, in order to increase the control accuracy, it is limited to increase the rotation angle of the rotating member. Further, in order to shield the spiral space of one of the rectilinear members from light, a complicated configuration is inevitable.
[0008]
For this reason, a lens barrel that is inexpensive and has high rigidity in spite of its compactness is not provided in a lens barrel that extends three or more steps.
[0009]
Therefore, one of the problems to be solved by the present invention is to provide a lens barrel that can be miniaturized and that extends three or more steps.
[0010]
[Means for Solving the Problems]
The present invention provides a lens barrel having the following configuration in order to solve the above technical problem.
[0011]
The lens barrel includes a fixing member, a first pair, a second pair, and a third pair. The first pair includes a first rectilinear member engaged with the fixed member movably in the axial direction and guided in a straight line, and a first pair of linear members rotatably coupled to the first rectilinear member so as to be axially movable together with the first rectilinear member. And a first rotating member that moves integrally. The first pair extends to the subject side with respect to the fixed member. The second pair includes a second rectilinear member which is engaged with the first rectilinear member so as to be movable in the axial direction and is guided in a rectilinear direction, and is coupled to the second rectilinear member so as to be rotatable relative to the second rectilinear member. A second rotating member that moves integrally in the axial direction and engages with the first rotating member movably in the axial direction without rotating relative to the first rotating member. The second pair extends toward the subject more than the first pair. The third pair includes a third rectilinear member engaged with the second rectilinear member movably in the axial direction and guided linearly, and a third pair of rotatable relative to the third rectilinear member, together with the third rectilinear member. A third rotating member that moves integrally in the axial direction and is movably engaged in the axial direction without rotating relative to the second rotating member. The third pair extends toward the subject more than the second pair. A portion where the second rectilinear member is axially movably engaged with the first rectilinear member is disposed radially inward of both the first rotating member and the second rotating member. A portion in which the third rectilinear member is axially movably engaged with the second rectilinear member is disposed radially inward of both the second rotating member and the third rotating member. The rotational driving force is linearly moved between the fixed member and the first rotating member, between the first rotating member and the second rectilinear member, and between the second rotating member and the third rectilinear member. They are connected by a drive transmission mechanism that converts the drive force into the drive force and transmits the drive force.
[0012]
In the above configuration, three stages of the first pair, the second pair, and the third pair are extended from the fixing member. The drive transmission mechanism is, for example, a screw connection (helicoid connection), a cam connection, or the like.
[0013]
According to the above configuration, it is possible to prevent the first rectilinear member from intervening between the first rotating member and the second rotating member. Further, the second linear member can be prevented from intervening between the second rotating member and the third rotating member. This eliminates the need to provide a spiral space in the rectilinear member in order to transmit rotation between the rotating members.
[0014]
According to the above configuration, it is possible to eliminate components whose rigidity is reduced by the spiral space, and to reduce the size of the components. Further, the control angle can be improved by increasing the rotation angle of the rotation member. Further, light shielding can be realized with a simple configuration. Further, since no linear member is interposed between the rotating members, the configuration for transmitting the rotation between the rotating members can be simplified.
[0015]
Therefore, the size of the lens barrel can be reduced.
[0016]
Further, since the mechanism for feeding out each pair uses a screw connection, the force transmitting portion can be arranged at many positions along the outer shape of the rotating member, that is, the lens barrel. Therefore, the rigidity of the lens barrel can be improved.
[0017]
Preferably, the first rotary member and the second linear member, and the second rotary member and the third linear member are always screw-coupled over the entire circumference.
[0018]
In the above configuration, since the portion to be screw-connected is present over the entire circumference, it is possible to shield light between the members to be screw-connected over the entire circumference with a simple configuration.
[0019]
Preferably, the first rectilinear member has a first rectilinear interlocking portion extending in the axial direction. The first rotating member has, on an inner peripheral surface thereof, a helicoid and a rotation interlocking groove formed by notching the helicoid partway in the radial direction and extending in the axial direction. The second rectilinear member has a second rectilinear interlock that extends in the axial direction and engages with the first rectilinear interlock so as to be movable in the axial direction. The second rotating member has, on its outer peripheral surface, a projection that engages with the rotation interlocking groove of the first rotating member, and has a helicoid and a radially cut-out part of the helicoid on its inner peripheral surface. And a rotation interlocking groove extending in the axial direction. The third rectilinear member has a third rectilinear interlocking portion that extends in the axial direction and engages with the second rectilinear interlocking portion so as to be movable in the axial direction. The third rotating member has, on its outer peripheral surface, a projection that engages with the rotation interlocking groove of the second rotating member. The first rectilinear guide is disposed radially inward of both the first rotating member and the second rotating member. The second rectilinear guide member is disposed radially inward of both the second rotating member and the third rotating member.
[0020]
According to the above configuration, in the first rotating member and the second rotating member, the rectilinear guide groove is formed by cutting the helicoid partway in the radial direction, so that even if the rectilinear guide groove is provided, light is blocked by helicoid coupling. be able to.
[0021]
Preferably, the first rectilinear interlocking unit, the second rectilinear interlocking unit, and the third rectilinear interlocking unit are radially inner than any of the first rotating member, the second rotating member, and the third rotating member. They are arranged on substantially the same circle.
[0022]
According to the above configuration, since the radial thickness of each rectilinear interlocking portion does not accumulate, the radial dimension of the lens barrel can be reduced.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0024]
As shown in the exploded perspective view of FIG. 1, the lens barrel 10 includes a first rotating member 210, a second rotating member 310, By inserting the cam ring 410, the first lens moving frame 400, the second lens frame 500, the second rectilinear member 300, and the first rectilinear member 200 in this order, assembly can be performed.
[0025]
In the lens barrel 10, the first rotating member 210 and the first linear member 200 form a first pair, the second rotating member 310 and the second linear member 300 form a second pair, and a cam ring 410 (third rotation). The first lens moving frame 400 (corresponding to the third rectilinear member) forms a third pair, and three steps extend from the fixed barrel 100. Each pair of rotating members 210, 310, 410 and the rectilinear members 200, 300, 400 are bayonet-coupled, and are rotatable relative to each other, but move integrally without relative movement in the axial direction.
[0026]
More specifically, the fixed cylinder 100 has a hollow hole, and a helicoid 102 and a plurality of axially extending linear guide grooves (not shown) are formed on the inner peripheral surface thereof. Although not shown, a communication hole that radially communicates the outside with the hollow hole is formed, and a long gear for driving the lens is arranged parallel to the axis of the hollow hole.
[0027]
The first rotating member 210 is a substantially cylindrical member inserted into a hollow hole of the fixed cylinder 100, and has a gear portion 211 that meshes with a long gear (not shown) for driving a lens at a rear end thereof. A helicoid 212 that engages with the helicoid 102 of the cylinder 100 is formed, and when rotated by a long gear, moves in the axial direction with respect to the fixed cylinder 100. On the inner peripheral surface of the first rotating member 210, a helicoid 214 and a plurality of linearly-moving guide grooves 216 that are axially extended and arranged uniformly on the circumference are formed.
[0028]
The second rotating member 310 is a substantially cylindrical member inserted inside the first rotating member 210, and a projection 312 is formed at a rear end thereof to engage with the straight guide groove 216 of the first rotating member 210. The relative rotation of the first rotating member 210 and the second rotating member is prevented, and the first rotating member 210 and the second rotating member rotate integrally so as to be movable in the axial direction. A helicoid 314 and a plurality of linear guide grooves 316 extending in the axial direction are formed on the inner peripheral surface of the second rotating member 310.
[0029]
The cam ring 410 is a substantially cylindrical member that is inserted inside the second rotating member 310, and a projection 412 that engages with the linear guide groove 316 of the second rotating member 310 is formed at the rear end thereof. The relative rotation of the second rotating member 310 and the cam ring 410 is prevented, and the cam ring 410 is integrally rotated so as to be movable in the axial direction. A plurality of second cam grooves 416 for driving the second lens group 82 (see FIGS. 2 to 5) are formed on the inner peripheral surface of the cam ring 410. The lens barrel 10 is a zoom focus lens. In each cam groove 416, a portion for changing the focal length (zooming region) and a portion for changing the focus position (focusing region) are alternately arranged.
[0030]
The first lens moving frame 400 is a substantially cylindrical member in which the first lens frame portion 403 at the front end and the flange portion 402 at the rear end are connected via the connecting portion 401. The first lens frame portion 403 holds the first lens group 81 (see FIGS. 2 to 5). A helicoid 404 that engages with the helicoid 314 of the second rotating member 310 is formed on the outer peripheral surface of the flange portion 402, and is relatively moved in the axial direction when the second rotating member 310 rotates. The connecting portion 401 is partially cut away, and has a straight guide groove 405 and a second lens frame guide groove 406 extending in the axial direction.
[0031]
In the second lens frame 500, a plurality of arms 501 are connected to the outer peripheral surface of the second lens frame 502 that holds the second lens group 82 (see FIGS. 2 to 5). Each arm portion 501 is formed with a rectilinear guide portion 505 projecting in the circumferential direction and a cam follower projection 506 projecting radially outward. Each arm portion 501 is inserted into the second lens frame guide groove 406 of the connection portion 401 of the first lens moving frame 400, and each straight guide portion 505 slides on the side surface of the second lens frame guide groove 406. The cam follower projection 506 is engaged with the second cam groove 416 of the cam ring 410.
[0032]
In the second linear member 300, a flange portion 302 expanding radially outward is connected to a rear end of the substantially cylindrical linear guide portion 301. The rectilinear guide portion 301 partially extends in the circumferential direction, is inserted into the rectilinear guide groove 405 of the connecting portion 401 of the first lens moving frame 400, the side surfaces thereof are in sliding contact, and the second rectilinear member 300 and the first The relative rotation to the lens moving frame 400 is prevented, and the lens moving frame 400 is relatively moved in the axial direction. The rectilinear guide portion 301 is divided into three parts, each of which is formed with a rectilinear guide groove 305 extending partway from the rear side toward the front in the axial direction. A helicoid 306 that engages with the helicoid 214 of the first rotating member 210 is formed on the outer peripheral surface of the flange portion 302, and the second rectilinear member 300 moves in the axial direction with the rotation of the first rotating member 210. It has become.
[0033]
In the first straight member 200, a pair of first straight guide portions 201 extending forward in the axial direction are connected to the inner diameter side of the ring portion 202. A plurality of protrusions 203 are formed on the outer peripheral surface of the ring portion 202 to engage with straight guide grooves (not shown) of the fixed cylinder 100. The first rectilinear guide portion 201 is inserted into a rectilinear guide groove 305 formed in the rectilinear guide portion 301 of the second rectilinear member 300, and its side surface 204 slidably contacts the side surface of the rectilinear guide groove 305, and The relative rotation to the second rectilinear member 300 is prevented, and the second linear member 300 relatively moves in the axial direction.
[0034]
As shown in FIG. 6 in which the lens barrel 10 is viewed axially forward from the rear side, the connecting portion 401 of the first lens moving frame 400, the arm portion 501 of the second lens frame 500, and the second linear member 300 The rectilinear guide section 301 and the first rectilinear guide section 201 of the first rectilinear guide member 200 are arranged on the same circumference. By arranging the plurality of rectilinear interlocking portions related to the drive mechanisms of the plurality of lens groups with substantially the same diameter, the lens barrel 10 can be reduced in size.
[0035]
In other words, although a circumferential force acts on each of the rectilinear interlocking parts, since they are arranged at substantially the same diameter, the position of application of the circumferential force is shifted in the radial direction between the rectilinear interlocking parts before and after the axial direction. No couple occurs. Therefore, sufficient strength can be ensured without increasing the size of the member including each straight-moving interlocking portion.
[0036]
In general, in a multi-stage lens barrel, the rotating member and the straight-moving member of each stage are arranged adjacent to each other, and each stage is arranged in the radial direction when retracted. Therefore, the radial thickness of the lens barrel cannot be made smaller than the sum of the radial thickness of the rotating member in each stage and the radial thickness of the linear member in each stage. On the other hand, as shown in FIG. 6, if the linear members of each stage are arranged so as to overlap in the radial direction, the accumulation of the radial thickness of the linear members of each stage can be eliminated, so that the lens mirror The radial dimension of the torso can be made smaller.
[0037]
Further, the pair of first rectilinear guide portions 201 of the first rectilinear member 200 are vertically moved in the drawing so that the long sides of the rectangular light receiving surface that receives the image formed by the lens barrel face in the same direction as the opposing direction. Are located in When the first rectilinear guide portion 201 is disposed radially inward, it interferes with a light beam reaching the long side of the light receiving surface. However, there is no problem even if it interferes with a light beam reaching outside the long side of the light receiving surface. Therefore, the lens barrel 10 can be downsized by arranging the first rectilinear guide portion 201 as radially inward as possible while preventing vignetting of the light beam on the light receiving surface.
[0038]
Therefore, the multi-stage lens barrel can be made compact.
[0039]
Each stage of the lens barrel 10 expands and contracts by helicoid coupling. For this reason, even if an excessive force acts on the lens barrel 10 in the axial direction, many parts receive the force, and the rigidity can be increased at a lower cost than when the lens barrel is expanded and contracted by the cam mechanism. .
[0040]
2 to 4 are cross-sectional views when the lens barrel 10 is incorporated in a camera body. FIG. 2 shows the wide end state (state where the focal length is shortest), FIG. 3 shows the tele end state (state where the focal length is longest), and the retracted state of FIG. 4, respectively. In the figure, reference numeral 1 denotes an optical axis, and reference numeral 150 denotes a cover provided on the camera body.
[0041]
As shown in FIGS. 2 to 4, a lens barrier unit 20 is provided at the tip (subject side) of the lens barrel 10.
[0042]
Further, a shutter unit 130 is fixed to the first lens moving frame 400 adjacent to the first lens group 81. In the shutter unit 130, shutter blades (not shown) are arranged behind the first lens group 81 (the side opposite to the subject side) and open and close. The shutter unit 130 is provided with a photoreflector 91 for detecting the pattern of the pattern plate attached to the inner peripheral surface of the cam ring 410, so that the extension amount of the lens barrel 10 can be detected. The shutter unit 130 and the photo reflector 91 are connected to a control circuit (not shown) of the camera body via the flexible printed circuit board 140.
[0043]
In addition, along the outer edge of the front surface of the second lens frame 500, an annular light blocking member 90 is fixed using, for example, a double-sided tape. As the light shielding member 90, a malt plane which is an elastic member is used. Malt plain is easy to obtain desired characteristics by controlling the amount of compression, but rubber, flocked cloth (telemp), urethane foam, cantilevered bellows-like members, etc. Other elastic members may be used.
[0044]
As shown in FIG. 3, when the second lens group 82 approaches the first lens group 81, the light blocking member 90 is compressed and deformed by contacting the rear surface of the shutter unit 130. At this time, since a sufficient gap is provided between the first lens moving frame 400 and the inner diameter of the connecting portion 401, the light shielding member 90 freely spreads radially outward, and the second lens frame 500 The member 90 can move to the shutter unit 130 side without being hindered by the compression deformation.
[0045]
On the other hand, as shown in FIGS. 3 and 4, when the second lens group 82 moves away from the first lens group 81, the light shielding member 90 returns to its original shape due to its elasticity. As shown in FIG. 5, when the light shielding member 90 returns to the original shape, the light shielding member 90 passes through the gap 6 between the outside of the second lens frame 500 and the inside of the connection portion 401 of the first lens moving frame 400. The light beam 6a directed to the light receiving surface is blocked.
[0046]
By configuring the light-blocking member 90 with an elastic member, even when the distance between the first lens group 81 and the second lens group 82 is reduced, the outside of the second lens group 82 is shielded with a simple configuration. A shutter unit 130 can be arranged between the first lens group 81 and the second lens group 82. Further, the light shielding member 90 can be made smaller by being arranged close to the optical path.
[0047]
Next, the operation of the lens barrel 10 will be described.
[0048]
The first rectilinear member 200, the second rectilinear member 300, the first lens moving frame 400, and the second lens frame 500 move only in the axial direction without rotating due to mutual engagement. On the other hand, when the first rotating member 210 is driven to rotate by the long gear, the second rotating member 310 and the cam ring 410 are also integrally rotated by the engagement between the straight guide grooves 216 and 316 and the projections 312 and 412.
[0049]
When the first rotating member 210 rotates, the first rotating member 210 and the first rectilinear guide member 200 move relative to the fixed cylinder 100 in the axial direction due to the engagement between the helicoid 212 and the helicoid 102 of the fixed cylinder 100. . Further, since the helicoid 214 of the first rotating member 210 and the helicoid 306 of the second linear member 300 are engaged with each other, the rotation of the first member 210 causes the second linear member 300 and the second rotating member 310 to rotate by the first rotation. It moves relative to the member 310 and the first linear guide member 200 in the axial direction. Further, since the helicoid 314 of the second rotating member 310 and the helicoid 404 of the first lens moving frame 400 are engaged, when the second rotating member 310 is rotated by the rotation of the first rotating member 210, the first lens moving frame 400 is rotated. The cam ring 410 moves relative to the second linear member 300 and the second rotating member 310 in the axial direction.
[0050]
That is, the lens barrel 10 rotates from the retracted state shown in FIG. 4 to the wide-end state (the shortest focal length state) shown in FIG. 2 by the forward rotation of the long gear (not shown). It extends to the tele end state (the state where the focal length is the longest) in FIG. On the other hand, by the rotation of the long gear (not shown) in the opposite direction, it contracts to the collapsed state of FIG.
[0051]
As described above, it is possible to prevent an increase in size due to the multiple stages with a simple configuration in which portions for linearly interlocking movement in the multi-stage zoom lens barrel are arranged with substantially the same diameter.
[0052]
Further, with a simple configuration in which the light shielding member 90 is provided, it is possible to shield light between the shutter unit 130 and the second lens frame 500 that relatively move in the axial direction.
[0053]
It should be noted that the present invention is not limited to the above-described embodiment, but can be implemented in other various modes.
[0054]
For example, the present invention can be applied to a lens barrel that extends four or more steps. In addition, not only the light blocking between the lens frame and the shutter unit, but also the relative movement in the axial direction, such as between the lens frames, between the lens frames, the shutter unit, the aperture unit, the straight-moving member and rotating member of the lens barrel, and the mask plate. It can be widely applied to light shielding between any two members.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a lens barrel showing an embodiment of the present invention.
FIG. 2 is a sectional view of the lens barrel in a wide end state.
FIG. 3 is a sectional view of the lens barrel in a tele end state.
FIG. 4 is a sectional view of the lens barrel in a collapsed state.
FIG. 5 is an explanatory diagram of light blocking of the lens barrel.
FIG. 6 is a main part configuration diagram of the lens barrel viewed from an axial direction.
[Explanation of symbols]
10 Lens barrel 90 Light shielding member 100 Fixed cylinder (fixed member)
200 First straight member (first pair)
201 Straight running guide unit (first straight running interlocking unit)
210 first rotating member (first pair)
214 Helicoid 216 Straight guide groove (rotation interlocking groove)
300 Second linear member (second pair)
301 Straight-ahead guidance unit (second straight-ahead interlocking unit)
305 Straight guide groove 310 Second rotating member (second pair)
312 Projection 314 Helicoid 316 Straight running guide groove (rotation interlocking groove)
400 First lens moving frame (third straight member, third pair)
401 Connecting part (third straight-moving interlocking part)
405 Straight guide groove 410 Cam ring (third straight member, third pair)
412 protrusion 500 second lens frame

Claims (4)

A fixing member,
A first rectilinear member which is engaged with the fixed member so as to be movable in the axial direction and is guided linearly; and is rotatably coupled to the first rectilinear member and moves integrally with the first rectilinear member in the axial direction. A first pair consisting of a first rotating member and extending toward the subject side relative to the fixed member;
A second rectilinear member engaged with the first rectilinear member movably in the axial direction and guided in a rectilinear direction; and a second rectilinear member which is rotatably coupled to the second rectilinear member and integrally formed with the second rectilinear member in the axial direction. A second pair of members that move and engage movably in the axial direction without relative rotation with respect to the first pair of rotation members, and extend toward the subject side more than the first pair;
A third rectilinear member engaged with the second rectilinear member movably in the axial direction and guided in a rectilinear direction; and a third rectilinear member rotatably coupled to the third rectilinear member and integrally integrally formed with the third rectilinear member in the axial direction. A third rotating member that moves and is axially movably engaged with the second rotating member without relative rotation with respect to the second rotating member, and a third pair extending toward the subject side from the second pair.
A portion in which the second rectilinear member is axially movably engaged with the first rectilinear member is disposed radially inward of any of the first rotating member and the second rotating member.
A portion where the third rectilinear member is axially movably engaged with the second rectilinear member is disposed radially inward of any of the second rotating member and the third rotating member.
The rotational driving force is linearly moved between the fixed member and the first rotating member, between the first rotating member and the second rectilinear member, and between the second rotating member and the third rectilinear member. A lens barrel, wherein the lens barrel is coupled by a drive transmission mechanism that converts the drive force into transmission. The screw between the first rotating member and the second linear member and between the second rotating member and the third linear member are always screwed over the entire circumference. Item 2. The lens barrel according to Item 1. The first linear member has a first linear interlocking portion extending in the axial direction,
The first rotating member has a helicoid and an axially extending rotation interlocking groove formed by cutting the helicoid partway in the radial direction on an inner peripheral surface thereof,
The second rectilinear member has a second rectilinear interlocking portion that extends in the axial direction and engages with the first rectilinear interlocking portion movably in the axial direction.
The second rotating member has, on its outer peripheral surface, a projection that engages with the rotation interlocking groove of the first rotating member, and has a helicoid and a radially cut-out part of the helicoid on its inner peripheral surface. Having an axially extending rotation interlocking groove formed by
The third rectilinear member has a third rectilinear interlocking portion that extends in the axial direction and engages with the second rectilinear interlocking portion so as to be movable in the axial direction.
The third rotating member has, on its outer peripheral surface, a projection that engages with the rotation interlocking groove of the second rotating member,
The first rectilinear guide portion is disposed radially inward of any of the first rotating member and the second rotating member,
The lens barrel according to claim 1, wherein the second rectilinear guide member is disposed radially inward of both the second rotating member and the third rotating member. 4. The first rectilinear interlocking section, the second rectilinear interlocking section, and the third rectilinear interlocking section are substantially the same circle radially inward of any of the first rotating member, the second rotating member, and the third rotating member. The lens barrel according to claim 1, 2 or 3, wherein the lens barrel is disposed above.

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