JP2019070721A - Lens barrel and method for manufacturing the same, and optical instrument including the same - Google Patents

Abstract

To provide a lens barrel that has a structure in which stable regulation of rotation of a plurality of switches can be performed.SOLUTION: A lens barrel has a plurality of switches consisting of operation target members that are arranged on the outer peripheral surface of an exterior ring, and click members that are coupled to the operation target members from an inner peripheral surface side of the exterior ring, where the inner peripheral surface is formed with a step part, and rotation regulation parts that each extend in the direction of movement of the operation target members and have first and second surfaces facing each other; the click members each have an urging part that urges the step part, and a contact part that is in contact with the first and second surfaces to regulate the rotation of the switch. The first and second surfaces are inclined to come closer to each other toward the outside in the radial direction of the exterior ring, and when viewed in the direction of the central axis of the exterior ring, the angle formed by the radial direction and the first surface and the angle formed by the radial direction and the second surface are a predetermined angle in all of the switches.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a lens barrel and a method of manufacturing the lens barrel, and an optical apparatus provided with the same, and more particularly to an optical apparatus provided with a switch, for example, a single-lens reflex camera, a compact camera, a TV camera, a liquid crystal projector, binoculars, etc. .

  Some lens barrels are provided with a switch on the exterior ring for selecting whether to enable or disable functions related to lens operation (such as auto focus and camera shake correction).

  The switch of Patent Document 1 includes an operated member and a click member, which are held by the outer ring by being configured to sandwich the outer ring. When the operated member exposed on the outer peripheral surface is moved, the click member inside is also moved.

  The click member biases the stepped portion formed on the inner circumferential surface of the outer ring by the biasing portion. When the click member is moved so as to get over the step of the step portion, the biasing force is changed, and the click feeling is generated due to the change. Also, the click member has a contact portion. The contact portion abuts on the two rotation regulating surfaces formed on the inner circumferential surface of the outer ring, thereby restricting the rotation of the switch on the outer circumferential surface of the outer ring.

  Hereinafter, the step portion and the rotation restricting surface formed on the inner circumferential surface of the outer ring are referred to as a mechanical mechanism portion.

  In order to form the mechanical mechanism on the inner peripheral surface of the outer ring, an inner slide (inclined core) is required in a mold for molding the outer ring. Furthermore, it is necessary to prevent the shape of the mechanical mechanism portion from becoming an undercut shape (a shape in which the inner slide can not slide) in the drawing direction of the inner slide, or to form a shape having a sufficient draft.

  In Patent Document 1, one of the rotation restricting surfaces is a surface oblique to the rotational direction of the operated member and the click member (hereinafter referred to as a slope), and the other is a surface perpendicular to the rotational direction (hereinafter referred to as a vertical surface). Discloses a configuration). Thus, by forming the mechanical mechanism portion to have a slope, it becomes a shape corresponding to the molding using the inner slide (a shape having no undercut shape with respect to the extraction direction and having a sufficient draft). There is.

  However, the contact portion of the click member in Patent Document 1 contacts both of the rotation restricting surfaces having different inclinations. For this reason, the reaction force received by the contact portion may differ depending on the rotational direction of the operated member and the click member (different depending on the operation direction of the switch). Therefore, the operation may be unstable. In addition, when the slopes of the slopes of the switches are different, the feeling of operation may change for each switch.

  On the other hand, in the switch of Patent Document 2, the click member has two contact portions separated in the moving direction (optical axis direction) of the switch. One contact portion can be in contact with the inclined surface similar to the rotation control surface of Patent Document 1 and the vertical surface, and the other contact portion can be in contact with another rotation control surface formed of the vertical surface. Furthermore, these rotation control surfaces are configured such that at least one of the two contact portions of the click member can abut against the corresponding vertical surface regardless of which direction the click member rotates.

  Therefore, the switch of Patent Document 2 is considered to be able to stably regulate the rotation regardless of the rotational direction of the operated member and the click member.

JP, 2014-98822, A JP, 2016-109960, A

  However, the click member of Patent Document 2 has a problem that the rotation regulation of the switch becomes unstable because the other contact portion described above is deformed by the deformation of the urging portion. This problem is explained in detail using FIG.

  FIG. 8 is a view showing a deformed state of the click member 1100 when the urging portion 1103 passes over the step portion (not shown) of the outer ring. The whiter (lighter) the color, the larger the deformation, and the darker (darker) the smaller the deformation. Reference numeral 1102 is a first contact portion. A second contact portion corresponding to the other contact portion described above is provided in the portion 1104 (the second contact portion is omitted for simplification of the shape).

  When the biasing portion 1103 gets over the step portion of the outer ring along with the operation of the switch, the fixing portion 1101 that fixes the click member to the operated member between the biasing portion 1103 and the first contact portion 1102 (see FIG. And the first contact portion 1102 is hardly deformed. In other words, the first contact portion 1102 opposite to the biasing portion 1103 with respect to the fixed portion 1101 is hardly deformed. Therefore, the rotation of the switch can be effectively restricted.

  However, since the second contact portion 1104 is located on the same side as the biasing portion 1103 with respect to the fixed portion 1101 (the fixed portion 1101 is not present) and in the vicinity of the biasing portion 1103, the biasing portion The deformation of 1103 is propagating. Under the influence of this deformation, there is a problem that the rotation restriction by the second contact portion 1104 becomes unstable when the biasing portion 1103 gets over the step portion of the outer ring.

  Therefore, an object of the present invention is to provide a lens barrel having a structure capable of stable rotation regulation in a plurality of switches.

  In order to achieve the above object, according to the present invention, an outer ring for housing a lens, and an operated member movable on the outer peripheral surface of the outer ring and disposed on the outer peripheral surface of the outer ring; And a plurality of switches configured of a click member coupled to the operated member from the side of the inner circumferential surface of the outer ring, and the inner circumferential surface has a step portion, and the operated member. A rotation restricting portion extending in the moving direction of the member and having the first and second surfaces facing each other is formed, and the click member is provided with a biasing portion for biasing the step portion, the first and the second, A lens barrel having an abutting portion which abuts on the second surface to restrict rotation of the switch, and in the rotation restricting portion, the first and second surfaces are in the radial direction of the outer ring It is inclined to approach each other toward the outside, and the central axis of the outer ring is And countercurrent viewed, characterized in that the said first surface is an angle with the radial direction, said second surface angle is a predetermined angle in all the switches.

  According to the present invention, it is possible to provide a lens barrel having a structure capable of stably regulating rotation among a plurality of switches at low cost.

Side view of lens barrel according to the present invention A view of the switch operation part of FIG. 1 from the inside Sectional view at XX in FIG. 2 Enlarged view of the circled part in Figure 2 The cross-sectional view in YY of FIG. 4 and the enlarged view of the encircled part of FIG. 2 Cross-sectional view of the rotation restricting portion according to the present invention Enlarged view of part E of FIG. 6 Diagram showing the problem of the conventional example

  The lens barrel according to the present invention and the optical apparatus having the same will be described below with reference to FIGS. 1 to 7. As an optical apparatus, a single-lens reflex camera, a compact camera, a TV camera, a liquid crystal projector, binoculars, etc. correspond, but in the following, a single-lens reflex camera will be described as an example.

(overall structure)
FIG. 1 is a side view of a lens barrel (interchangeable lens) used in a single-lens reflex camera. The lens barrel has a mount portion 103 and is coupled to a camera body (not shown) including an imaging element by the mount portion 103 to form an image of a subject on the imaging element.

  The contact block 104 has power supply from the camera body and an electric contact portion for exchanging signals such as a lens drive command. At the time of photographing, a focus lens and an aperture of the lens barrel are driven by an instruction from the camera body side.

  Next, the function of each part of the lens barrel will be described. Reference numeral 100 is a focus operation ring. The focus operation ring 100 is mechanically connected to a focusing cam ring (not shown) and a guide cylinder (not shown) built in the lens barrel. When the photographer manually rotates the focus operation ring 100, the cam ring rotates and the focus lens (not shown) moves in the optical axis direction. Thus, the photographer can manually adjust the focus.

  In addition, the lens barrel also has a drive mechanism (not shown) for enabling autofocus, and as described above, this drive mechanism moves the focus lens based on the signal (command) from the camera body side. The autofocus is performed by Detailed explanation of the mechanism is omitted.

  Reference numeral 101 is a zoom operation ring. The zoom operation ring 101 is mechanically connected to a zoom cam ring (not shown) and a guide cylinder. When the photographer manually rotates the zoom operation ring 101, the cam ring is rotated, and the zoom lens (not shown) is moved in the optical axis direction. Thereby, the photographer can perform manual scaling.

  Reference numeral 102 denotes an outer ring of the lens barrel, which rotatably holds the focus operation ring 100 and the zoom operation ring 101, and holds mechanical components and lenses incorporated in the lens barrel.

(Switch overview)
The exterior ring 102 further includes switches 10S, 20S, 30S, and 40S for switching the function of the lens barrel. These are held movably relative to the exterior ring 102 in the optical axis direction of the lens barrel.

  The switch 10S switches the moving range of the focus lens (not shown). The switch 20S switches whether to perform focus adjustment automatically or manually with the focus operation ring 100. The switch 30S switches ON / OFF the drive of the camera shake correction mechanism mounted on the interchangeable lens. The switch 40S changes the control of the camera shake correction mechanism when the camera shake correction mechanism is ON. The photographer can select a desired operation or function by appropriately switching these switches 10S, 20S, 30S, and 40S. Each of the operated members 10, 20, 30, 40 is a member touched by the finger of the photographer when the photographer operates the switches 10S, 20S, 30S, 40S.

  The switch shown in FIG. 1 is an example of a switch provided on the outer ring of the lens barrel. There is also a mode in which any one or any two or any three or any one of the switches 10S to 40S are provided on the outer ring depending on the function of the lens barrel and the like. In addition, there is also a form in which a switch for performing function selection different from 10S to 40S is provided on the outer ring.

(Switch configuration)
FIG. 2 is a view of a portion where the exterior ring 102 holds the switches 10S, 20S, 30S, and 40S as viewed from the inner peripheral surface side of the exterior ring 102. As shown in FIG.

  The operated members 10, 20, 30, 40 (see FIG. 1) disposed on the outer circumferential surface of the outer ring 102 are coupled to the click member 11 by screws (coupling members) 12 from the side of the inner circumferential surface.

  FIG. 3 is a cross-sectional view of the operated member 10 taken along the line X-X in FIG. Thus, the operated member 10 and the click member 11 are held by the exterior ring 102 with the exterior ring 102 interposed therebetween (the same applies to the operated members 20, 30, 40). In addition, the number in the parenthesis attached to the code | symbols 11 and 12 has shown the code | symbol of the to-be-operated member 10,20,30,40 each couple | bonded.

  Reference numeral 102b in FIG. 3 is a first surface for restricting the rotation of the click member 11, and the details will be described later. Reference numeral 11 b in FIG. 3 denotes the contact portion 11 b of the click member 11, which similarly contributes to restricting the rotation of the click member 11, and the details will be described later.

  In FIG. 2, reference numeral 14 denotes a switch element. The switch element 14 is soldered to a flexible cable (not shown) electrically connected to a lens control substrate (not shown) and is electrically connected to the cable.

  FIG. 4 is an enlarged view of a portion (a portion surrounded by a circle in FIG. 2) constituting the operated member 10 in FIG. By moving the contact switching unit 14 a of the switch element 14, the internal contact is switched.

  As shown in FIG. 4, the engaging portion 11 c of the click member 11 engages with the contact switching portion 14 a of the switch element 14. The click member 11 is moved along with the slide operation of the operated member 10, and the contact switching unit 14a is moved via the engaging portion 11c. As a result, the electrical contact inside the switch element 14 is switched, and the camera shake correction mechanism can be switched ON / OFF in the operation of the operated member 10.

  The code | symbol 11a in FIG. 4 is a biasing part (click spring part). The biasing portion 11 a has a biasing force, and biases the step portion (click peak portion) 102 a formed on the inner peripheral surface of the exterior ring 102. When the photographer operates the switch 10S (see FIG. 1), the urging portion 11a is moved so as to get over the step of the step portion 102a, thereby generating a change in the operating force, that is, a click feeling.

  FIG. 5 is a YY cross section in FIG. In addition, an enlarged view of a circled portion of FIG. 2 is also shown.

  When the photographer performs the switching operation of the switch 10S (see FIG. 1), the photographer moves the operated member 10 in the direction of the arrow Z from the state of FIG. FIG. 5B shows a state in the middle of the movement of the operated member 10, in which the biasing portion 11a is deformed to run on the convex shape of the step portion 102a. After passing through the state of FIG. 5B, the movement of the operated member 10 shown in FIG. 5C is completed, and the state after the shape of the biasing portion 11a is restored (the switching operation of the switch 10S is completed State). The photographer obtains a click feeling by the load change associated with the (shape) change of the series of urging portions 11a.

(Force acting on the click member)
When the operated member 10 slides from the state of FIG. 5A, an operating force F1 is applied to the click member 11 in the direction of the arrow F1 in FIG. On the other hand, in the state shown in FIG. 5B, the reaction force F2 of the restoring force of the step portion 102a to the urging portion 11a acts on the urging portion 11a of the click member 11 in the direction of the arrow F2 in FIG.

  The reaction force F2 acts in the opposite direction to the operation force F1, but since they do not act on the same line, a rotational force Fm is generated in the direction of the arrow Fm in the operated member 10 and the click member 11 when the reaction force F2 is large. . The rotational force Fm causes the swing (rotation) of the switch 10S (see FIG. 1). The shake of the operated member 10 induces the deterioration of the feeling of operation. In addition, the relationship of the force at the time of sliding movement of the to-be-operated member 10 from the state of FIG.5 (c) becomes reverse to this.

(Rotation restriction)
In order to suppress the deflection of the operated member 10, the click member 11 has a contact portion 11b, and a rotation restricting portion G1 which is a groove is formed on the inner peripheral surface of the exterior ring 102. The rotation restricting portion G1 has a first surface 102b and a second surface 102c which are two surfaces (side surfaces of a groove) extending in the moving direction (direction along the optical axis) of the switch 10S facing each other. The abutting portion 11b abuts on (engages with the rotation restricting portion G1) the first surface 102b, and generates a reaction force Ft that opposes the rotational force Fm. The configuration in which the rotation restricting portion G <b> 1 guides the click member 11 in this manner suppresses the shake of the switch 10 </ b> S.

  When a rotational force is applied in the opposite direction to the rotational force Fm due to the operated member 10 being moved in reverse, the contact portion 11b abuts on the second surface 102c and a reaction force is generated. .

(One-piece molding)
FIG. 6 is a cross-sectional view of the contact portion 11b and the rotation restricting portion G1 as viewed from the optical axis direction. Hereinafter, the contact portion 11b and the rotation restricting portion G1 will be described in detail.

  Holding portions (portions indicated by K in FIG. 6) for holding the switches 10S, 20S, 30S, and 40S are integrally molded with the outer ring 102 using a mold (resin). This makes it possible to receive the merits of reducing the number of screws, preventing the intrusion of water droplets and dust, and improving the appearance quality by an integral design, as compared to the case of separately configuring.

(Type structure)
However, in integral molding, in order to form a mechanical mechanism on the inner circumferential surface of the outer ring 102, an inner slide is required for the mold. That is, the type structure becomes complicated.

  In particular, in the case where there are a plurality of switches as in this embodiment, it is difficult to match the slide direction of the inner slide to all the switches (to provide the inner slide for each switch) due to space constraints.

  The thick dotted lines shown in FIG. 6 indicate the mold structure of the outer ring 102. Thus, the slide of the outer ring 102 in the present invention is a six-direction slide (SLIDE A, B, G, H, I, J). Each arrow indicates the slide direction (extraction direction) of each slide.

  Focusing on SLIDE A and SLIDE B, which are inner slides, in this embodiment, mechanical mechanisms other than the mechanical mechanism related to the switch 10S have a slope (gradient) so as not to have an undercut shape in the sliding direction. is necessary.

  Therefore, it is impossible to provide all the groove-shaped rotation restricting portions G1 perpendicularly (perpendicular to the bottom surface of the rotation restricting portion G1) to the rotation direction of each switch (refer to the arrow Fm in FIG. 4) The first surface 102 b and the second surface 102 c are excluded). In other words, any one of the first surface (202b, 302b, 402b) and the second surface (203c, 302c, 402c) must be inclined. Specifically, in the present embodiment, the outer ring 102 can not be released unless the first surface 402 b and the second surfaces 102 c and 302 c are inclined.

(Slope of rotation restriction part)
In response to this, the rotation restricting portion G1 of this embodiment will be described in detail.

  Hereinafter, as shown in FIG. 6, as viewed from the direction of the center axis 0 of the exterior ring 102, each connecting the center (in the short direction) of the center axis 0 and each operated member 10, 20, 30, 40 (see FIG. 1) The dashed dotted line 112, 122, 132, 142 is referred to as a radial direction with respect to the central axis 0 of each operated member. The side from the outer ring 102 toward the central axis 0 is the inside in the radial direction, and the opposite is the outside.

  In the present embodiment, the sliding direction of SLIDE A coincides with (is parallel to) (the inward direction of) the radial direction 112 of the operated member 10.

  On the other hand, SLIDE A also forms a mechanical mechanism related to the switch 20S and the switch 40S. Therefore, the radial direction 122 of the operated member 20 and the radial direction 142 of the operated member 40 are not parallel to the sliding direction of SLIDE A.

  Further, a mechanical mechanism part related to the switch 30S is formed by SLIDE B adjacent to SLIDE A. However, in the present embodiment, the sliding direction of SLIDEB and the radial direction 132 of the operated member 30 are not parallel.

  Therefore, mechanical mechanisms related to the switches 20S, 30S, and 40S other than the operated member 10 need to be shaped (not inclined) with respect to SLIDE A and SLIDE B so as not to be an undercut.

  In the present embodiment, at least the second surface 202c of the rotation restricting portion G2 of the switch 20S needs to be inclined at an angle β with respect to the removal direction of SLIDE A. The first surface 402b of the rotation restricting portion G4 of the switch 40S needs to be inclined at an angle γ with respect to the removal direction of SLIDEA. The second surface 302c of the rotation restricting portion G3 of the switch 30S needs to be inclined at an angle δ with respect to the removal direction of SLIDEB.

  Therefore, in the present embodiment, the first surfaces 102b, 202b, 302b, and 402b that all the rotation restricting portions G1 to 4 have an inclination (a predetermined angle) α larger than the inclinations β, γ, and δ necessary for the mold structure. , And the second surface 102c, 202c, 302c, and 402c. The inclination α is an inclination with respect to the radial directions 112, 122, 132, 142. The direction of the inclination α is a direction in which each first surface and each second surface approach each other in the radial direction.

  The inclination angle needs to be set so as not to fall below the maximum angle among the angles of the inclinations β, γ, δ necessary for the mold structure, including the tolerance. Within this constraint, it is more preferred that the slope α be set to a minimum. In the present embodiment, the inclination α is 33 degrees with respect to the radial direction of each operated member, but the setting of the inclination angle is not limited to this. The slope α may be set larger for the purpose of enhancing the releasability.

  Although it is possible to form one of the first and second surfaces forming a pair parallel to the radial direction (perpendicular to the rotational force Fm (see FIG. 4)), the present embodiment Then, all the rotation restricting portions are formed to be inclined surfaces having the inclination α.

  The reason is that by setting the inclinations of the first and second surfaces of all the rotation restricting portions to α, the operation feeling does not change for each switch. Moreover, it is because the same operation feeling can be obtained, without using the click member of a different shape for every switch. Moreover, it is also because the fluctuation | variation of the reaction force which the contact part 11b by rotation direction receives can be made small.

(Shape of contact part)
FIG. 7A is an enlarged view of a portion (mechanism mechanism portion related to the switch 10S) shown by E in FIG. FIG. 7B is a view of the contact portion 11b of the click member 11 as viewed in the direction of the arrow L in FIG. 7A.

  The contact part 11b has 1st rib R1 and 2nd rib R2, as shown in FIG.7 (b). The bending angle of the first rib R1 and the second rib R2 is an angle ε (ε ≦ α) with respect to the radial direction 112 (see FIG. 7A).

  A biasing force Fsp acts on the contact portion 11b of the click member 11 in the direction of the arrow Fsp in FIG. 7A. By this urging force Fsp, the rotation restriction portion G1 and the first rib R1 of the contact portion 11b and the bent R portions (ridge lines L1 and L2 portions) of the second rib R2 abut on each other.

  That is, in the present embodiment, the rotation restricting portion G1 and the contact portion 11b are in line contact with each other at the ridge lines L1 and L2 of the contact portion 11b. The direction of the line of the line contact is a direction along the extending direction of the rotation restricting portion G1. That is, it is a direction along the direction in which the switch 10S is operated and moved. In the present embodiment, the rotation restricting portion G1 and the contact portion 11b are in line contact with each other in a line extending in the optical axis direction.

  Further, in the present embodiment, the bending angle ε of the first rib R1 and the second rib R2 is set to 28 degrees. However, the angle ε is not limited to this. For example, in consideration of the tolerance at the time of bending of the click member 11, it may be set smaller than the inclination α by 1 degree (set to 32 degrees in this embodiment).

  With such a configuration, the rotation restricting portion G1 and the contact portion 11b can be reliably in line contact, and the sliding resistance generated when the photographer operates the switch 10S can be further reduced.

  Conventionally, as in the switch mechanism disclosed in Patent Document 1, when a rotational force Fm (see FIG. 4) is generated, a wall perpendicular thereto is opposed (the angle α is 0 degree). However, in the present invention, the wall of the angle α is opposed. Therefore, due to the rotational moment Fm, the generated reaction force Ft may be converted into an inner force in the radial direction, and may receive the force and may ride on the inclined side. For this reason, the rotation restricting portion in the present embodiment is formed of an elastic member so as to have the biasing force Fsp on the outer side in the radial direction of the outer ring.

  More preferably, the biasing force Fsp of the contact portion 11b is set to be larger than the reaction force Ft / tan α generated due to the rotational force Fm. This makes it possible to suppress the shake more stably.

(effect)
In the present embodiment, with the above-described configuration, it is possible to form the steadying mechanism regardless of the (inside slide) removal direction of the mold. Since the inclination of all the rotation restricting portions G1 to G4 is unified to the angle α although the inner sliding direction is different, the direction of swing (rotation) (or the direction of operating each switch) as in the prior art Therefore, the performance of the steady rest does not change, and the feeling of operation does not change.

  Further, with the above configuration, each switch 10S, 20S, 30S, 40S can be configured with a small difference between switches and stable operation feeling with only one type of click member 11 corresponding to the angle α, and parts sharing It also contributes to cost reduction by Further, since the outer ring of the lens of this embodiment integrally molds a plurality of rotation restricting parts by a common inner slide, it contributes to the cost reduction of the mold. That is, the manufacturing cost of the lens barrel in the present invention can be reduced.

  Further, in the path (arrow R of the broken line in FIG. 4) along which the deformation (displacement) of the biasing portion 11a propagates, the contact portion 11b is formed apart at the end different from the biasing portion 11a. It is possible to prevent the deformation (displacement) of the biasing portion 11a from propagating to the contact portion 11b. Thereby, the performance of good rotation regulation can be maintained.

  In addition, in the path (arrow R of the broken line in FIG. 4) through which the deformation (displacement) of the biasing portion 11a of the click member 11 propagates, the fixing screw 12 is provided between the biasing portion 11a and the contact portion 11b. It is. Thereby, the deformation (displacement) of the biasing portion 11a can be further prevented from propagating to the contact portion 11b.

  The holding configuration and mechanism of the operated member have been described using the operated member 10 among the operated members provided with a plurality of lens barrels according to the present embodiment. However, the holding configuration and mechanism of the operated member 20, the operated member 30, and the operated member 40 are also the same as those of the operated member 10, and the shake of the operated member can be effectively suppressed as described above. is there.

(Modification)
Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the present invention. For example, the lens barrel may be integrally attached to a photographing device or the like. That is, the present invention is also applicable to a single-lens reflex camera, a compact camera, a TV camera and the like provided with a photographing lens. In this case, it is desirable to use the lens barrel of the present embodiment as a photographing lens.

  For example, a liquid crystal projector (a projection type display device including an illumination optical system for guiding light from a light source to a display element to illuminate the display element and a projection optical system for projecting an image by light from the display element illuminated by this It is applicable also in. When used in such a liquid crystal projector, it is desirable that the lens barrel of the present embodiment be used as a projection optical system that projects the image light from the display element (liquid crystal element) described above onto a screen or the like.

  Moreover, it is applicable also to other optical observation apparatuses, such as binoculars, for example. The optical observation device includes a pair of left and right objective lenses for guiding observation light from an observation object, right and left erecting optical systems such as an erecting prism and a mirror, and light from these to the user's right and left eyes It is equipped with the left and right eyepieces to guide each. In this case, it is desirable that the lens barrel of this embodiment be used for one or both of the objective lenses.

10S, 20S, 30S, 40S switch 10, 20, 30, 40 operated member 11 click member 11a biasing portion 11b contacting portion 102 outer ring 102a stepped portion 102b, 202b, 302b, 402b first surface 102c, 202c, 302c, 402c second surface G1, G2, G3, G4 rotation restricting portion

Claims (11)

An exterior ring incorporating a lens,
An operated member which is movable on the outer peripheral surface of the outer ring and is disposed on the outer peripheral surface of the outer ring, and a click member connected to the operated member from the side of the inner peripheral surface of the outer ring And a plurality of switches composed of
The inner circumferential surface is formed with a stepped portion, and a rotation restricting portion having first and second surfaces extending in the movement direction of the operated member and facing each other,
The click member is a lens barrel having a biasing portion that biases the step portion, and a contact portion that contacts the first and second surfaces to restrict the rotation of the switch.
In the rotation restricting portion, the first and second surfaces are inclined so as to approach each other toward the outer side in the radial direction of the outer ring, and when viewed from the direction of the central axis of the outer ring, the radial direction and the A lens barrel characterized in that an angle formed by one surface and an angle formed by the second surface are predetermined angles in all the switches.   The lens barrel according to claim 1, wherein the contact portion has a biasing force that biases the rotation restricting portion outward in the radial direction. The biasing force is set to be larger than a force received inward in the radial direction from the first surface and the second surface due to a rotational moment generated when the biasing portion rides the step portion. The lens barrel according to claim 2, characterized in that: The contact portion and the rotation restricting portion are in line contact, and the direction of the line contact is a direction along the movement direction of the operated member. The lens barrel according to claim 1. The contact portion includes a first rib and a second rib which are bent to face the first and second surfaces, respectively.
The angle between the radial direction and the first rib and the angle between the radial direction and the second rib are smaller than the predetermined angle, as viewed from the direction of the central axis of the sheath. The lens barrel according to any one of 1 to 4. The said click member WHEREIN: The connection member which connects the said click member and the said to-be-operated member is arrange | positioned between the said contact part and the said biasing part. The any one of Claim 1 thru | or 5 characterized by the above-mentioned. The lens barrel described in. The lens barrel according to any one of claims 1 to 6, wherein a shape of the click member is common to the plurality of switches. The method for manufacturing a lens barrel according to any one of claims 1 to 7, further comprising the step of integrally molding the plurality of rotation restricting portions on the outer ring by a common inner slide. A camera comprising an image pickup device, and a photographing lens for forming an image of a subject on the image pickup device, the photographing lens comprising the lens barrel according to any one of claims 1 to 7. An imaging device. An illumination optical system that illuminates the display element with light from a light source; and a projection optical system that projects an image with light from the display element illuminated by the illumination optical system.
The projection optical system includes the lens barrel according to any one of claims 1 to 7.
A projection type display device characterized by One or both of the left and right objective lenses are the lens barrel according to any one of claims 1 to 7,
A left erecting optical system receiving light from the left objective lens, a right erecting optical system receiving light from the right objective lens, and the light from the left erecting optical system as a left eye An optical observation apparatus comprising: a left eyepiece leading to the right eyepiece; and a right eyepiece leading the light from the right erecting optical system to the right eye.