JP2014232133A - Lens barrel and imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens barrel and an imaging device that enable a simple configuration to prevent an unintended movement of a lens group at any position of the lens group.SOLUTION: A lens barrel 20 according to the present invention comprises: a barrel member 21; a lens holding part 24 that is provided movably to an optical axis with respect to the barrel member 21; an operation ring 22 that is provided rotatably to the barrel member 21, and moves the lens holding part 24 by a rotation; an operated part 130 that is provided in a circumferential direction at a position overlapping with the barrel member 21 in a radial direction of the operation ring 22; a movement operation part 120 that is provided movably between a lock position and a release position; and pressure parts 123, 124 and 125 that are provided in the movement operation part 120, and press the operated part 130 of the operation ring 22 in the radial direction by the movement of the movement operation part 120 from the release position to the lock position.

Description

  The present invention relates to a lens barrel and an imaging apparatus.

  For example, in a lens with a heavy first lens group, such as a high-power zoom lens, when the lens is directed upward or downward, the cam mechanism operates due to the weight of the first lens group and the lens barrel expands and contracts, changing the focal length of the lens. May end up.

In order to solve such a problem, a mechanism is known that employs a mechanism that fixes the zoom ring at the wide end where the total length of the zoom lens is the shortest, and prevents unintended expansion and contraction during carrying.
There has also been proposed a zoom lens that can adjust a torque value for operating a zoom operation ring (see Patent Document 1).

JP 2001-147362 A

However, in the configuration in which the zoom operation ring is fixed at the wide end, unintended expansion and contraction cannot be stopped except at the wide end. For this reason, it is not possible to cope with a situation where a shooting angle is set at an arbitrary focal length by being supported by a tripod or the like.
In addition, the configuration that enables adjustment of the torque value for operating the zoom operation ring has a complicated structure and increases costs.

  An object of the present invention is to provide a lens barrel and an imaging apparatus that can prevent an unintended movement of a lens group at an arbitrary position of the lens group with a simple configuration.

The present invention solves the above problems by the following means.
According to the first aspect of the present invention, a cylindrical member, a lens holding portion provided so as to be movable in the optical axis direction with respect to the cylindrical member, and provided so as to be rotatable with respect to the cylindrical member. An operation ring that moves the holding portion in the optical axis direction, a position that overlaps the cylindrical member in the radial direction of the operation ring, and an operation portion that is provided in the circumferential direction, and moves between a lock position and a release position. A movable operation unit provided in a possible manner, and a pressing unit that is provided in the movement operation unit and that presses the operated portion of the operation ring in the radial direction by the movement of the movement operation unit from the release position to the lock position. And a lens barrel characterized by comprising:
Invention of Claim 2 is a lens-barrel of Claim 1, Comprising: Between the said to-be-operated part and the said cylinder member in the part which the said to-be-operated part and the said cylinder member overlapped in radial direction The lens barrel is characterized in that a friction member is disposed.
A third aspect of the present invention is the lens barrel according to the first or second aspect, wherein a portion of the pressing portion that presses the operated portion is an inclined surface. It is.
A fourth aspect of the present invention is the lens barrel according to any one of the first to third aspects, further comprising a holding portion that holds the movement operation portion at the lock position. This is a lens barrel.
The invention according to claim 5 is the lens barrel according to claim 4, wherein the pressing portion and the holding portion are integrally formed.
The invention according to claim 6 is the lens barrel according to any one of claims 1 to 5,
The lens is characterized in that the operated portion is disposed on the inner peripheral side of the cylindrical member, and the pressing portion is configured to press the operated portion in the radial direction from the inner peripheral side. It is a lens barrel.
The invention according to claim 7 is the lens barrel according to any one of claims 1 to 5, wherein the operated portion is arranged on an inner peripheral side of the cylindrical member, and the pressing portion is The lens barrel is configured to press the operated portion radially from the outer peripheral side thereof.
The invention described in claim 8 is an imaging apparatus including the lens barrel described in any one of claims 1 to 7.

  According to the present invention, it is possible to provide a lens barrel and an imaging apparatus that can prevent an unintended movement of a lens group at an arbitrary position of the lens group with a simple configuration.

1 is a conceptual diagram of a camera configured by mounting a lens barrel that is a first embodiment of the present invention on a camera body. FIG. It is the figure which showed the state of the change of the focal distance in a lens-barrel, (a) is the state of a wide-angle end, (b) is an intermediate state, (c) is the figure which showed the state of the telephoto end. It is a perspective view of a lens barrel. It is an expanded sectional view of the rotation control mechanism in 1st Embodiment equivalent to the W section enlarged view in FIG. It is an expanded sectional view of the rotation control mechanism in a 2nd embodiment. It is an expanded sectional view of the rotation control mechanism in a 3rd embodiment. It is an expanded sectional view of the rotation control mechanism in a 4th embodiment. It is AA sectional drawing of FIG.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings and the like.
FIG. 1 is a conceptual diagram of a camera 1 configured by mounting a lens barrel 20 according to a first embodiment of the present invention on a camera body 10. 2A and 2B are diagrams showing a change in focal length in the lens barrel, where FIG. 2A shows a wide-angle end state, FIG. 2B shows an intermediate state, and FIG. 2C shows a telephoto end state. is there. FIG. 3 is an external perspective view of the lens barrel 20.
In the following drawings, an XYZ orthogonal coordinate system is provided for ease of explanation and understanding. In this coordinate system, when the photographer shoots a horizontally long image with the optical axis OA being horizontal, the direction toward the left side when viewed from the photographer at the position of the camera (hereinafter referred to as a positive position) is the X plus direction. A direction toward the upper side in FIG. Also, the direction toward the subject at the normal position is the Z plus direction. This Z plus direction is also called the front side, and the Z minus direction is also called the back side. Furthermore, movement in a direction parallel to the optical axis OA (that is, the Z axis) is referred to as “straight forward”, and rotation about the optical axis OA is referred to as “rotation”.

The camera 1 includes a camera body 10 and a lens barrel 20. The lens barrel 20 is detachably attached to the camera body 10 by the lens mount LM provided at the base end thereof engaging with the body mount BM of the camera body 10.
The camera body 10 is a so-called digital single-lens reflex camera that includes an image sensor 11 that converts an optical image into an electrical signal, performs image processing on image data obtained by the image sensor 11 and records the image data in a recording unit (not shown). The present invention is not limited to a digital single lens reflex camera.

The lens barrel 20 is a so-called zoom lens that includes five lens groups L1, L2, L3, L4, and L5 and can change the focal length.
The focal length of the lens barrel 20 changes continuously by moving the lens groups L1 to L5 by a predetermined amount in the direction of the optical axis OA (Z direction) by rotating the zoom operation ring 22. Then, as shown in FIG. 2, the lens groups (L1 to L5) respectively move to the front side from the wide-angle end state of (a), and the first lens group L1 moves to the front side in the telephoto end state of (c). Protrusively.

The lens barrel 20 includes a fixed outer cylinder (cylinder member) 21, a zoom operation ring 22, and a rotation restriction mechanism 100 that restricts the rotation of the zoom operation ring 22 at an arbitrary rotation position.
The zoom operation ring 22 has a cylindrical shape with a predetermined length, and is attached to the tip of the fixed outer cylinder 21 so as to be rotatable and immovable in the direction of the optical axis OA.

On the inner peripheral side of the zoom operation ring 22, an intermediate tube 23, a first group barrel 24 that holds the first lens group L <b> 1, and an inner tube 25 are disposed in order from the outer peripheral side.
Due to the rotation of the zoom operation ring 22, the intermediate cylinder 23 moves forward while rotating by a coupling mechanism (not shown). Then, the first group barrel 24 advances straight by the rotation of the intermediate cylinder 23.

  In other words, in the lens barrel 20, the first group barrel 24 (that is, the first lens unit L1) is moved and moved back and forth in the optical axis direction via the intermediate barrel 23 by the rotation operation of the zoom operation ring 22. .

The rotation restricting mechanism 100 is disposed adjacent to the back side of the zoom operation ring 22 and is configured to be able to restrict the rotation of the zoom operation ring 22 at an arbitrary position.
The rotation regulating mechanism 100 will be described in detail with reference to FIG. 4 in addition to FIGS. 1, 2 and 3 described above.

  FIG. 4 shows a first embodiment of the rotation restricting mechanism 100 corresponding to the portion surrounded by the dotted line in FIG. 1, wherein (a) shows a released state and (b) shows a locked state. In FIG. 1, the rotation restricting mechanism 100 is shown in the Y-axis direction. However, this is for convenience, and more precisely, as shown in FIG.

The rotation restricting mechanism 100 includes a slide switch 120 provided in an installation portion 110 formed in the vicinity of the rear side edge of the zoom operation ring 22 of the fixed outer cylinder 21 and a cover formed on the rear edge of the zoom operation ring 22. And an operation unit 130.
The installation portion 110 in the fixed outer cylinder 21 includes an installation recess 111, a through hole 112, and an engagement protrusion 113.

The installation recess 111 moves in a direction parallel to the optical axis OA (= Z axis) between the release position shown in FIG. 4 (a) and the lock position shown in FIG. 4 (b). The size is obtained.
The through hole 112 is formed in a size that allows the support shaft 121B of the slide switch 120 to be inserted from the outer peripheral side to the inner peripheral side, and allows the movement between the release position and the lock position of the support shaft 121B. .

  The engagement protrusion 113 is provided on the inner peripheral surface of the edge on the back side of the through hole 112 in the fixed outer cylinder 21. The engagement protrusion 113 corresponds to the operation movement distance of the slide switch 120 in a direction parallel to the optical axis OA (= Z axis), and a step is provided with a gradient in this direction. A click spring 122 in a slide switch 120 described later is engaged with the engagement protrusion 113.

The slide switch 120 includes a switch body 121, a click spring 122, and a pressing plate 123.
The switch body 121 has a rectangular plate shape, and a protrusion 121A protrudes from the center of the upper surface in the longitudinal direction, and a support shaft 121B protrudes from the lower surface.

The click spring 122 is formed of a plate material having spring properties such as spring steel or stainless alloy steel, and the action arm 122B extends from the mounting portion 122A fixed to the support shaft portion 121B toward the outer peripheral side at a predetermined angle. Has been.
At the tip of the action arm 122B, an engagement portion 122C having an arc surface on the outer peripheral side is bent and formed.

The pressing plate 123 is formed of a plate material having a predetermined rigidity such as metal or synthetic resin, and is fixed to the lower surface of the support shaft portion 121B with the mounting portion 122A of the click spring 122 interposed therebetween.
The pressing plate 123 protrudes to the front surface side of the support shaft portion 121B, and the upper surface of the protruding portion is an operation inclined surface 123A that is inclined at a predetermined angle in a direction in which the front surface side is directed toward the inner peripheral side.

  The slide switch 120 is parallel to the optical axis OA (Z axis) between the release position shown in FIG. 4A and the lock position shown in FIG. It is arranged to be movable in the direction by a predetermined amount.

  The click spring 122 of the slide switch 120 keeps the slide switch 120 in the release position when the slide switch 120 shown in FIG. 4A is in the release position and the engaging portion 122C is located on the back side of the engagement protrusion 113. Acts as follows.

When the slide switch 120 is slid to the front side with a predetermined force from this release position, the engaging portion 122C gets over the engaging protrusion 113 by the elastic deformation of the action arm 122B, and as shown in FIG. 122C reaches the front side of the engagement protrusion 113 and acts to maintain the slide switch 120 in the locked position.
That is, the click spring 122 acts to maintain the slide switch 120 at the release position and the lock position, and provides a predetermined resistance and a click feeling at each position during the movement operation.

The operated portion 130 in the zoom operation ring 22 is disposed on the inner peripheral side of the front end portion 21A of the fixed outer cylinder 21 so as to overlap with a predetermined range in a direction parallel to the optical axis OA direction (Z-axis direction). That is, the operated portion 130 is provided in the circumferential direction at a position overlapping the fixed outer cylinder 21 in the radial direction of the zoom operation ring 22.
An inner peripheral surface of the operated portion 130 is an operated slope 131 having an angle corresponding to the operation slope 123 </ b> A of the pressing plate 123 in the slide switch 120. The operated slope 131 is formed on the entire circumference in the circumferential direction.

  Here, when the slide switch 120 shown in FIG. 4A is in the release position, the corner of the inner peripheral edge on the back side of the operated slope 131 substantially coincides with the angle on the outer peripheral side of the operation slope 123A of the pressing plate 123 (operation). The corner of the slope 123A is slightly on the inner circumference side. 4B is set so that the pressing plate 123 enters the inner peripheral side of the operated portion 130 and overlaps in the radial direction when the slide switch 120 shown in FIG.

The rotation restricting mechanism 100 configured as described above acts as follows to restrict the rotation of the zoom operation ring 22 at an arbitrary position.
As described above, the slide switch 120 of the rotation restricting mechanism 100 is moved to the release position shown in FIG. 4A by the engagement portion 122C getting over the engagement protrusion 113 of the installation portion 110 by the elastic deformation of the click spring 122. The moving operation can be performed between the lock position shown in FIG. The click spring 122 acts to give a click feeling at each position and maintain each position.

  When the slide switch 120 is in the release position shown in FIG. 4A, the pressing plate 123 in the slide switch 120 does not overlap with the operated portion 130 (operated slope 131) in the zoom operation ring 22 in the radial direction. The rotation of 22 is not restricted.

When the slide switch 120 is slid from the release position toward the lock position, the operation slope 123A of the pressing plate 123 of the slide switch 120 comes into contact with the operation slope 131 of the operated portion 130 and is operated while pressing it. It enters the inner peripheral side of the portion 130 and overlaps in the radial direction within a predetermined range in the optical axis OA direction (Z-axis direction).
Accordingly, the rotation of the zoom operation ring 22 is restricted by the frictional force generated when the operation slope 123 </ b> A of the pressing plate 123 is pressed against the operation slope 131 of the operated portion 130.

The operated portion 130 (operated slope 131) in the zoom operation ring 22 is formed on the entire circumference in the circumferential direction, and the rotation restriction by the slide switch 120 can be performed at an arbitrary rotation position of the zoom operation ring 22. .
In other words, it can function at any focal length within the zoom range (focal length change range) from the wide end to the tele end.

As described above, this embodiment has the following effects.
According to the present embodiment, the zoom operation ring 22 can be restricted in rotation at an arbitrary rotational position by the operation of the slide switch 120 with a simple configuration. Accordingly, unintended expansion / contraction of the lens barrel caused by the action of the weight of the lens or the like can be suppressed at any focal length in the zoom range (focal length change range) from the wide end to the tele end.

[Second Embodiment]
Next, a rotation restricting mechanism 200 according to the second embodiment of the present invention shown in FIG. 5 will be described.
FIG. 5 is an enlarged cross-sectional view of the rotation restricting mechanism 200, where (a) shows a released state and (b) shows a locked state.
The rotation restricting mechanism 200 in the second embodiment has a configuration in which a friction member (elastic member) 140 is added to the structure of the rotation restricting mechanism 100 in the first embodiment described above. In FIG. 5, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the rotation restricting mechanism 200, a friction member 140 is attached to the inner peripheral surface of the front end portion 21 </ b> A of the fixed outer cylinder 21, and the friction member 140 is interposed between the outer peripheral surface 132 of the operated portion 130 in the zoom operation ring 22. Has been placed.
The friction member 140 is made of a material having a predetermined elasticity and a large friction coefficient, such as rubber, and has a rectangular cross section and is formed in an annular shape that is attached to the inner peripheral surface of the front end portion 21 </ b> A of the fixed outer cylinder 21.
The friction member 140 is disposed between the front end portion 21A of the fixed outer cylinder 21 and the operated portion 130 of the zoom operation ring 22 in a state compressed and elastically deformed by a predetermined amount in the radial direction. It has a function to prevent dust and moisture from entering the inside (dustproof and splashproof).

  When the slide switch 120 is slid from the release position shown in FIG. 5A toward the lock position, the operation slope 123A of the pressing plate 123 in the slide switch 120 is changed to the operation slope of the operated portion 130. 131 abuts. The operation slope 123A enters the inner peripheral side of the operated unit 130 while pressing the operated unit 130 toward the outer peripheral side in the radial direction, and enters the operated unit 130 within a predetermined range in the optical axis OA direction (Z-axis direction). On the other hand, they overlap in the radial direction.

At this time, when the operated portion 130 is pressed radially outward by the pressing plate 123, the zoom operation ring 22 moves eccentrically, and the elastic deformation of the operated portion 130 is added thereto, and the operated portion 130 is operated. The portion 130 approaches the front end portion 21A of the fixed outer cylinder 21 as indicated by an arrow in FIG.
As a result, the friction member 140 between the front end portion 21A of the fixed outer cylinder 21 and the operated portion 130 of the zoom operation ring 22 is compressed and deformed, and the relative movement of both is restricted by the friction force generated between them.
Similarly to the first embodiment described above, the frictional force caused by the operation slope 123 </ b> A of the pressing plate 123 being pressed against the operation slope 131 of the operated portion 130 also restricts the rotation of the zoom operation ring 22.

  According to the rotation restriction mechanism 200 in the second embodiment, in addition to the same effects as those in the first embodiment, the rotation restriction of the zoom operation ring 22 can be more strongly performed at an arbitrary rotation position of the zoom operation ring 22. .

[Third Embodiment]
Next, a rotation regulating mechanism 300 according to the third embodiment of the present invention shown in FIG. 6 will be described.
FIG. 6 is an enlarged cross-sectional view of the rotation restricting mechanism 300, where (a) shows a released state and (b) shows a locked state.
The rotation restricting mechanism 300 in the third embodiment is configured such that the single click pressing plate 124 functions as the click spring 122 and the pressing plate 123 provided in the slide switch 120 of the rotation restricting mechanism 100 in the first embodiment described above. It has become.
In FIG. 6, the same components as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

The click pressing plate 124 is formed of a plate material having both predetermined rigidity and elasticity made of metal or synthetic resin, and is fixed to the lower surface of the support shaft portion 121B.
The click pressing plate 124 protrudes to the front surface side of the support shaft portion 121B, and a mountain-shaped engaging portion 124A that protrudes in a triangular shape is formed on the outer peripheral side of the click pressing plate 124. The operation slope 124B is extended as it is.
Further, the upper surface (outer peripheral surface) of the click pressing plate 124 is set to be positioned on the outer peripheral side by a predetermined amount with respect to the inner peripheral surface of the operated portion 130 in the zoom operation ring 22 described later.

On the other hand, the operated portion 130 in the zoom operation ring 22 is formed with an operated surface 133 corresponding to the operation slope 124B of the click pressing plate 124 at the corner of the inner peripheral edge, and corresponds to the engaging portion 124A on the inner periphery. A triangular engaging recess 134 is formed.
As shown in FIG. 6A, the operated surface 133 is configured such that the slide switch 120 faces the operation slope 124B of the click pressing plate 124 at the release position.
The engaging recess 134 is set so that the engaging portion 124A of the click pressing plate 124 fits into the engaging recess 134 when the slide switch 120 shown in FIG.

  In the rotation restricting mechanism 300 configured as described above, when the slide switch 120 is in the release position illustrated in FIG. 6A, the click pressing plate 124 of the slide switch 120 is operated by the operated portion 130 (operated) in the zoom operation ring 22. It does not overlap with the slope 131) in the radial direction, and the rotation of the zoom operation ring 22 is not restricted.

  When the slide switch 120 is slid from the release position toward the lock position, the operation slope 124B of the click pressing plate 124 of the slide switch 120 comes into contact with the operated surface 133 of the operated portion 130, which is radially outer peripheral side. , While entering the inner peripheral side of the operated portion 130, and overlaps in the radial direction. Then, the engaging portion 124A of the click pressing plate 124 is fitted into the engaging recess 134 and positioned at the lock position.

As a result, the operated portion 130 is pressed toward the outer peripheral side in the radial direction by the click pressing plate 124, and the zoom operation ring 22 moves eccentrically in the direction by the fitting gap that inevitably exists in the configuration, The elastic deformation of the operated portion 130 is added to this, and the operated portion 130 approaches the front end portion 21A of the fixed outer cylinder 21 as indicated by an arrow in FIG.
As a result, the friction member 140 between the front end portion 21A of the fixed outer cylinder 21 and the operated portion 130 of the zoom operation ring 22 is compressed and deformed, and the relative movement of both is restricted by the friction force generated between them. Further, the frictional force generated when the engaging portion 124 </ b> A of the click pressing plate 124 comes into pressure contact with the engaging concave portion 134 of the operated portion 130 also acts to restrict the rotation of the zoom operation ring 22.

According to the rotation restricting mechanism 300 in the third embodiment, in addition to the same effects as those in the first embodiment, the rotation can be restricted at an arbitrary rotation position of the zoom operation ring 22 with a smaller number of parts, and the structure is low in cost. can do.
Note that the switch body 121 and the click pressing plate 124 may be integrally formed of synthetic resin or the like. Then, further cost reduction can be achieved.

[Fourth Embodiment]
Next, a rotation restricting mechanism 400 according to the fourth embodiment of the present invention shown in FIG. 7 will be described.
FIG. 7 is an enlarged cross-sectional view of the rotation restricting mechanism 400, where (a) shows a released state and (b) shows a locked state. FIG. 8 is a cross-sectional view taken along the line AA of FIG.
The rotation restricting mechanism 400 in the fourth embodiment is configured such that the pressing plate 125 of the slide switch 120 presses to the inner peripheral side (optical axis OA side) unlike the first to third embodiments described above. .
In FIG. 7, the same components as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

The pressing plate 125 of the slide switch 120 is formed of a rigid plate material such as metal or synthetic resin, and is fixed to the lower surface of the support shaft portion 121B with the mounting portion 122A of the click spring 122 interposed therebetween.
The pressing plate 125 protrudes to the front surface side of the support shaft portion 121B, and the lower surface of the protruding portion is an operation slope 125A that is inclined at a predetermined angle in a direction in which the front surface side is toward the outer peripheral side.

On the other hand, the operated portion 130 in the zoom operation ring 22 has a predetermined amount in the radial direction parallel to the optical axis OA direction (Z-axis direction) on the inner peripheral side of the front end portion 21A of the fixed outer cylinder 21.
The outer peripheral surface of the operated portion 130 is an operated slope 135 having an angle corresponding to the operating slope 125 </ b> A of the pressing plate 125 in the slide switch 120. The operated slope 135 is formed on the entire circumference in the circumferential direction, and a gap in which the pressing plate 125 can be inserted between the operated slope 135 and the inner peripheral surface of the front end portion 21A of the fixed outer cylinder 21. Is set.

  Then, when the slide switch 120 slides the slide switch 120 from the release position shown in FIG. 7A toward the lock position, the operation slope 125A of the pressing plate 125 in the slide switch 120 is operated. It contacts the operated slope 135 of the part 130. Then, the operation slope 125A enters the outer peripheral side of the operated portion 130 while pressing the operated portion 130 toward the radially inner peripheral side, and overlaps in the optical axis OA direction (Z-axis direction) in the radial direction within a predetermined range.

At this time, the operated portion 130 is pressed toward the radially inner peripheral side by the pressing plate 125, so that the zoom operation ring 22 moves eccentrically, and the position where the rotation restricting mechanism 400 is disposed and the optical axis OA. On the opposite side (shown on the lower side in the drawing), the operated portion 130 approaches the front end portion 21A of the fixed outer cylinder 21 as indicated by an arrow in FIG. 7B.
As a result, the friction member 140 between the front end portion 21A of the fixed outer cylinder 21 and the operated portion 130 of the zoom operation ring 22 is compressed and deformed, and the relative movement of both is restricted by the friction force generated between them.
In addition, the frictional force generated when the operation slope 125 </ b> A of the pressing plate 125 is pressed against the operation slope 135 of the operation unit 130 also restricts the rotation of the zoom operation ring 22.
Further, as shown in FIG. 8B, the cross section is elongated in the left-right direction perpendicular to the direction of the pressing force so that the entire operated portion 130 is crushed in the radial direction by the pressing force of the pressing plate 125. Elastically deforms in the direction. As a result, the friction member 140 is compressed and deformed in the region B in the left-right direction, and the friction force generated between the operated portion 130 and the friction member 140 increases. That is, according to the present embodiment, since the frictional force between the friction member 140 and the operated portion 130 increases, the rotation restricting force of the zoom operation ring 22 increases.

  Thus, according to the rotation restricting mechanism 400 in the fourth embodiment, in addition to the same effects as those in the first embodiment, the rotation restriction of the zoom operation ring 22 is more powerful at any rotation position of the zoom operation ring 22. Can be done. In addition, since frictional force can be applied at a plurality of locations in the circumferential direction of the zoom operation ring 22, rotation can be stably regulated with good balance.

(Deformation)
The present invention is not limited to the above-described embodiment, and various modifications and changes as described below are possible, and these are also within the scope of the present invention.
(1) In this embodiment, the present invention is applied to a digital single-lens reflex camera. However, the camera format is not limited to this, and the present invention can also be applied to a video camera or the like.
(2) The arrangement of the optical system and the configuration of the interlocking mechanism in the lens barrel are not limited to the above embodiment and can be changed as appropriate.
(3) Although the rotation restricting mechanism 100 of the present embodiment has been described with respect to the form of preventing the zoom operation ring 22 from rotating, the present invention is not limited to this. For example, the rotation restricting mechanism of the present invention can also be applied to prevent rotation of the focus ring.
In addition, although embodiment and a deformation | transformation form can also be used in combination suitably, detailed description is abbreviate | omitted. Further, the present invention is not limited to the embodiment described above.

  1: camera, 10: camera body, 20: lens barrel, L1: first lens group, 21: fixed outer cylinder, 21A: front end, 22: zoom operation ring, 100: rotation restricting mechanism, 120: slide switch, 122: Click spring, 123, 125: Press plate, 124: Click press plate, 123A, 124B, 125A: Operation slope, 130: Operated portion, 131, 135: Operated slope, 140: Friction member

Claims (8)

A tubular member;
A lens holding portion provided movably in the optical axis direction with respect to the cylindrical member;
An operation ring provided rotatably with respect to the cylindrical member and moving the lens holding portion in the optical axis direction by rotation;
An operated portion provided in a circumferential direction at a position overlapping the cylindrical member in the radial direction of the operation ring;
A movement operation unit provided so as to be movable between a lock position and a release position;
A pressing portion that is provided in the movement operation portion and that presses the operated portion of the operation ring in a radial direction by moving the movement operation portion from the release position to the lock position;
A lens barrel characterized by The lens barrel according to claim 1,
A friction member is disposed between the operated portion and the cylindrical member in a portion where the operated portion and the cylindrical member overlap in the radial direction;
A lens barrel characterized by The lens barrel according to claim 1 or 2,
The portion of the pressing portion that presses the operated portion is a slope,
A lens barrel characterized by The lens barrel according to any one of claims 1 to 3,
A holding unit for holding the movement operation unit at the lock position;
A lens barrel characterized by The lens barrel according to claim 4,
The pressing portion and the holding portion are configured integrally;
A lens barrel characterized by The lens barrel according to any one of claims 1 to 5,
The operated portion is disposed on the inner peripheral side of the cylindrical member,
The pressing portion is configured to press the operated portion in a radial direction from an inner peripheral side thereof;
A lens barrel characterized by The lens barrel according to any one of claims 1 to 5,
The operated portion is disposed on the inner peripheral side of the cylindrical member,
The pressing portion is configured to press the operated portion in a radial direction from an outer peripheral side thereof;
A lens barrel characterized by Comprising the lens barrel according to any one of claims 1 to 7,
An imaging apparatus characterized by the above.

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