JP2007279149A - Optical apparatus and optical system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide optical equipment which can be surely attached with respect to a member to be attached, and an optical system where an attaching member can be surely attached with respect to the member to be attached. <P>SOLUTION: The optical device 20 is equipped with a body part 21, having a second mount part 50 which can be engaged with the bayonet type first mounting part 60 of the member to be attached 10, and an attracting member 41, generating attractive force between the member to be attached 10 and the attracting member 41, at a position where the first mounting part 60 and the second mounting part 50 are engaged with each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical device and an optical system.

A lens hood is known that is fixed to a lens barrel by a magnet (see, for example, Patent Document 1).
This conventional lens hood may be detached from the lens barrel when an external force larger than the magnetic force is applied, for example.
Japanese Patent Laid-Open No. 61-67841

  An object of the present invention is to provide an optical device that can be securely attached to a member to be attached and an optical system that can reliably attach the attachment member to the member to be attached.

The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although it attaches | subjects and demonstrates the code | symbol corresponding to drawing which shows embodiment of this invention, it is not limited to this.
The invention of claim 1 is characterized in that a main body portion (11) having a second mount portion (50) engageable with a bayonet-type first mount portion (60) of a mounted member (20); An optical device (10) comprising: a suction member (41) that generates a suction force with the mounted member at a position where the first mount portion and the second mount portion are engaged with each other. It is.

A second aspect of the present invention is the optical apparatus according to the first aspect, wherein the attracting member (41) is a magnet.
A third aspect of the present invention is the optical device according to the first or second aspect, wherein the second mount portion (50) rotates relative to the first mount portion (60). In the optical device, the suction member (41) is provided at or near the claw portion.
The invention of claim 4 is the optical device according to claim 2 or claim 3, wherein the magnet (41) includes the first mount portion (60) and the second mount portion (50). The S-pole and the N-pole are arranged along the relative rotation direction.
A fifth aspect of the present invention is the optical device according to any one of the first to fourth aspects, wherein the lens barrel (10), the interchangeable lens, the lens hood (20), a filter and a lens cap are provided. It is any one of these, It is an optical apparatus characterized by the above-mentioned.

The invention of claim 6 is an optical system including a mounting member (10) and a mounted member (20), wherein the mounting member is described in any one of claims 1 to 5. The mounted member is provided at or near the main body (21), the first mount (60) provided on the main body, and the first mount. And an adsorbed member (42), wherein the first mount portion and the second mount portion engage with each other, and the adsorbing member and the adsorbed member are coupled to each other. (1).
A seventh aspect of the present invention is the optical system according to the sixth aspect, wherein the first mount portion (60) is a claw for restricting relative rotation with the second mount portion (50). And an adsorbing member (42) is provided in the claw portion or in the vicinity thereof.
The invention of claim 8 is the optical system according to claim 6 or claim 7, wherein the attracting member (341) and the attracted member (342) are magnets, and the mounting member and the mounted member In a state where the members are attached to each other, the first mount portion (360) and the second mount portion (350) are orthogonal to the relative rotation direction of the attachment member and the attached member. The optical system is characterized in that the position in the relative rotation direction is not regulated, and the position in the relative rotation direction is not regulated.
The invention of claim 9 is the optical system according to any one of claims 6 to 8, wherein the first mount portion (60) and the second mount portion (50) are provided. At least one includes a locking portion (54) that locks relative rotation between the mounting member (10) and the mounted member (20), and in the state locked to the locking portion, The adsorbing member (41) is an optical system characterized in that the adsorbing member (41) is disposed in the vicinity of the adsorbed member (42).
A tenth aspect of the present invention is the optical system according to the ninth aspect, wherein at least one of the attracting member (41) and the attracted member (42) is disposed in the vicinity of the locking portion (54). It is the optical system characterized by the above-mentioned.
The invention of claim 11 is the optical system according to any one of claims 6 to 10, wherein the mounting member (10) is connected to the second mount part (60). It includes a groove (243) formed along a direction orthogonal to the relative rotation direction of the mounting member and the mounted member, and the mounted member (20) includes the mounting member and the mounted member. In a state where they are attached to each other, a moving part (241) movable along the groove part is included, and the suction member (241) is provided in or near the groove part. An optical system comprising a member.
Note that the configuration described with reference numerals may be changed as appropriate, or at least a part of the configuration may be replaced with another component.

  As described above, according to the present invention, it is possible to reliably mount the optical device on the mounted member or the mounting member on the mounted member.

[Embodiment 1]
Hereinafter, an optical system according to a first embodiment of the present invention will be described with reference to the drawings.
1A and 1B are side views showing an optical system according to the first embodiment. FIG. 1A shows a state before the lens barrel and the lens hood are attached, FIG. 1B shows a state in the middle of attachment, and FIG. , The state where the mounting is completed is shown.
FIG. 2 is a view of the mount portions of each element constituting the optical system of FIG. 1 as viewed from the optical axis direction, (a) is the lens barrel side mount portion of the lens barrel, (b) is The hood side mount part of the lens hood, (c) shows a state in which these mount parts are engaged.
In the optical system 1 of Embodiment 1, a lens barrel 10 and a lens hood 20 (hereinafter simply referred to as “hood 20”) are detachably mounted by a bayonet mount 30 and a suction portion 40.

The lens barrel 10 includes a main body portion 11 and a lens barrel side mount portion 50.
The main body 11 is a cylinder formed of, for example, a synthetic resin material. The main body 11 houses a lens or the like (not shown) on its inner diameter side.
The lens barrel side mount portion 50 is a part of the bayonet mount 30. The lens barrel side mount part 50 will be described later.
The hood 20 includes a main body portion 21 and a hood side mount portion 60.
The main body 21 is, for example, a cylinder formed of a synthetic resin material.
The hood side mount part 60 is the other part of the bayonet mount 30. The hood side mount 60 will be described later.

The bayonet mount 30 includes a lens barrel side mount portion 50 provided on the lens barrel 10 and a hood side mount portion 60 provided on the hood 20.
The lens barrel side mount 50 is provided at the end of the lens barrel 10 on the objective side in the optical axis direction. The lens barrel side mount portion 50 is formed of, for example, a metal material such as stainless steel, and is fixed to the main body portion 11 of the lens barrel 10.

The lens barrel side mount part 50 includes a base part 51, a ring part 52, a convex part 53, and a locking part 54.
The base 51 is an annular portion whose outer peripheral edge is connected to the inner peripheral edge on the optical axis direction objective side in the main body 11 of the lens barrel 10.
The ring portion 52 is an annular portion disposed substantially concentrically with the main body portion 11 of the lens barrel 10. The ring portion 52 is provided so as to protrude from the inner peripheral edge portion of the base portion 51 toward the optical axis direction objective side.
The convex portion 53 is a collar-like portion that protrudes from the end of the ring portion 52 on the optical axis direction objective side toward the outer diameter side of the ring portion 52. For example, a pair of the convex portions 53 are provided across the optical axis A (see FIG. 2A). The lengths of these convex portions 53 in the circumferential direction (hereinafter simply referred to as “circumferential direction”) around the optical axis are, for example, approximately ¼ of the outer circumferential length of the ring portion 52.
Thus, in the ring portion 52, two regions where the convex portions 53 are provided and two regions where the convex portions 53 are not provided are alternately arranged around the optical axis.

Here, when attention is paid to the portion of the ring portion 52 where the pair of convex portions 53 are provided, this portion includes the outer peripheral surface of the ring portion 52, the surface facing the optical axis direction objective side of the base portion 51, and the base portion 51. Is provided with a groove formed by the surface of the convex portion 53 facing the surface.
Hereinafter, in the lens barrel side mount portion 50, the portion of the ring portion 52 where the convex portion 53 is provided is the “claw portion 55”, the portion where the convex portion 53 is not provided is the “insertion portion 56”, and the claw portion 55 is provided. The grooves formed in the formed portions will be described as “guide portions 57”.

The locking portion 54 is provided by closing one end portion of the guide portion 57 in the circumferential direction. As a result, the guide portion 57 has one end in the circumferential direction as an open end and the other end as a closed end.
One locking portion 54 is provided for each of the pair of claw portions 55. These locking portions 54 are, for example, arranged symmetrically across the optical axis A.
The base 51, the ring part 52, the convex part 53, and the locking part 54 described above can be integrally formed by cutting, for example.

The hood side mount part 60 is provided at the end of the main body part 21 of the hood 20 on the image axis direction image side. The hood side mount portion 60 includes a claw portion 61.
The claw portion 61 is a collar-like portion formed to protrude from the inner peripheral edge portion on the optical axis direction image side in the main body portion 21 of the hood 20 to the inner diameter side of the hood 20.
A pair of the claw portions 61 is provided with the optical axis A in between, for example (see FIG. 2B). As described above, in the hood-side mount portion 60, two regions where the claw portions 61 are provided and two regions where the claw portions 61 are not provided are alternately arranged in the circumferential direction.
The circumferential lengths of these claw portions 61 are shorter than the circumferential length of the insertion portion 56 of the lens barrel side mount portion 50, and the claw portions 61 can be inserted into the insertion portion 56.
Further, the dimension in the direction along the optical axis direction of the claw part 61 is smaller than the dimension (groove width) in the direction along the optical axis direction of the guide part 57 of the lens barrel side mount part 50. 61 can be inserted into the guide portion 57.
The hood side mount part 60 is formed integrally with the main body part 21 of the hood 20 by, for example, injection molding.

The attracting unit 40 includes a magnet 41 and an iron piece 42.
The magnet 41 is embedded in a portion of the ring portion 52 of the lens barrel side mount portion 50 where the guide portion 57 is formed. The magnet 41 can be provided at an arbitrary position corresponding to the iron piece 42.
The magnet 41 is disposed adjacent to the locking portion 54 of the lens barrel side mount portion 50. A pair of the magnets 41 is provided with the optical axis A in between.

The iron piece 42 is a small piece formed of, for example, an iron-based metal material, and has a property of being attracted to the magnet 41 by a magnetic force.
The iron piece 42 is embedded in the claw portion 61 of the hood side mount portion 60. The iron piece 42 is disposed at a position facing the magnet 41 in a state where the hood 20 is attached to the lens barrel 10.

Hereinafter, an operation when the hood 20 is attached to the lens barrel 10 will be described.
The lens barrel 10 and the hood 20 are relatively moved in a direction approaching each other in a state where the claw portion 61 of the hood side mount portion 60 and the insertion portion 56 of the lens barrel side mount portion 50 overlap each other when viewed from the optical axis direction. The Thereby, the claw portion 61 of the hood side mount portion 60 is inserted into the insertion portion 56 of the lens barrel side mount portion 50 (see FIG. 1B).

Next, the lens barrel 10 and the hood 20 are relatively rotated in one direction around the optical axis. Hereinafter, this rotational direction will be simply referred to as “mounting direction”. For easy understanding, FIG. 1 shows a case where the lens barrel 10 is fixed and the hood 20 is rotated with respect to the lens barrel 10. As a result, the claw portion 61 of the hood side mount portion 60 is inserted into the guide portion 57 of the lens barrel side mount portion 50.
At this time, the claw portion 61 of the hood side mount portion 60 is engaged with the claw portion 55 of the lens barrel side mount portion 50, and the lens barrel side mount portion 50 and the hood side mount portion 60 are relatively rotated around the optical axis. The position in the direction orthogonal to the direction is restricted.
Further, when the lens barrel 10 and the hood 20 are relatively rotated in the mounting direction, the claw portion 61 of the hood side mount portion 60 comes into contact with the locking portion 54 of the lens barrel side mount portion 50. Thereby, the relative rotation of the lens barrel 10 and the hood 20 in the mounting direction is locked.

Here, in a state where the relative rotation of the lens barrel 10 and the hood 20 is locked, the magnet 41 faces the iron piece 42 (see FIG. 1C).
The iron piece 42 is attracted to the magnet 41 by the magnetic force, and thereby the relative rotation in the direction opposite to the mounting direction around the optical axis of the lens barrel 10 and the hood 20 is restricted.

As described above, according to the optical system 1 of the first embodiment, the following effects can be obtained.
(1) By connecting the lens barrel 10 and the hood 20 by the bayonet mount 30, the position in the direction orthogonal to the relative rotational direction thereof is regulated, and the direction opposite to the mounting direction by the suction portion 40. Therefore, the hood 20 can be securely attached to the lens barrel 10.
(2) Since the attractive force is generated between the magnet 41 and the iron piece 42 when the lens barrel 10 and the hood 20 are mounted, these relative rotational speeds are accelerated by this attractive force, and the user gets a click feeling. It is done. Also, when the hood 20 is removed from the lens barrel 10, a click feeling can be obtained.
(3) As a means for locking the relative rotation in the direction in which the lens barrel 10 and the hood 20 are separated, an elastic claw or the like may be provided. However, in this case, by repeatedly attaching and detaching the hood 20, the elastic claws may be worn, and it may be difficult to reliably fix them.
On the other hand, since the adsorption | suction part 40 (magnet 41, iron piece 42) of the optical system 1 of Embodiment 1 adsorb | sucks without a deformation | transformation, it is hard to generate | occur | produce abrasion. Therefore, the durability of the bayonet mount 30 is improved. Moreover, since the structure is simple, the number of parts can be reduced.

[Embodiment 2]
Next, a second embodiment of the optical system to which the present invention is applied will be described. In addition, in Embodiment 2 and other embodiments described below, parts that perform the same functions as those in Embodiment 1 described above are denoted by the same reference numerals or unified reference numerals at the end, and overlapping descriptions and drawings. Omitted as appropriate.
3A and 3B are diagrams showing an optical system according to a second embodiment to which the present invention is applied. FIG. 3A is a side view, and FIGS. 3B to 3D are magnets when a lens barrel and a hood are attached. It is the figure which looked at the positional relationship of from the optical axis direction.
In the optical system 2 according to the second embodiment, the attracting unit 140 includes a pair of magnets 141 and 142 (the attracting unit 140 is not illustrated). The magnet 141 is provided on the lens barrel side mount 150, and the magnet 142 is provided on the hood side mount 160. Hereinafter, the magnet 141 will be referred to as “lens barrel side magnet 141” and the magnet 142 will be referred to as “hood side magnet 142”.

The lens barrel side magnet 141 is disposed at substantially the same position as the magnet 41 of the first embodiment. In the barrel-side magnet 141, the N pole and the S pole are arranged in this order from the opening end of the guide portion 157 toward the closing end in the circumferential direction.
The hood side magnet 142 is disposed at substantially the same position as the iron piece 42 of the first embodiment. When the lens barrel 110 and the hood 120 are mounted, the hood-side magnet 142 has an S pole of the barrel-side magnet 141 and an N-pole of the hood-side magnet 142, and an N-pole of the barrel-side magnet 141 and the hood-side magnet 142. The S poles are arranged at positions facing each other.
Note that the magnetic poles of the barrel-side magnet 141 and the hood-side magnet 142 can be arranged opposite to each other in the circumferential direction as described above.
As described above, the lens barrel side magnet 141 and the hood side magnet 142 are opposed to each other when the lens barrel 110 and the hood 120 are opposed to each other with the magnetic poles arranged along the mounting direction of the lens barrel 110 and the hood 120. The magnetic poles of the lens barrel side magnet 141 and the hood side magnet 142 have opposite polarities.

Next, the operation when the hood 120 is attached to the lens barrel 110 in the optical system 2 of Embodiment 2 will be described.
In the optical system 2 of the second embodiment, similarly to the first embodiment, first, the claw portion 161 of the hood side mount portion 160 is inserted into the insertion portion 156 (not shown) of the lens barrel side mount portion 150, and then the lens mirror. The cylinder 110 and the hood 120 are relatively rotated in the mounting direction (see FIG. 3B).
Since the magnetic poles of the lens barrel side magnet 141 and the hood side magnet 142 are arranged opposite to each other along the mounting direction, when the lens barrel 110 and the hood 120 are relatively rotated in the mounting direction, the N poles of each other And a repulsive force is generated between them (see FIG. 3C).

From this state, when the lens barrel 110 and the hood 120 are further rotated relative to each other in the mounting direction, the claw portion 161 of the hood side mount portion 160 contacts the locking portion 154 of the lens barrel side mount portion 150.
Thus, the hood side magnet 142 and the lens barrel side magnet 141 are attracted so that the N pole and the S pole of the hood side magnet 142 are opposed to the S pole and the N pole of the lens barrel side magnet 141, respectively (FIG. 3). (See (d)).
When the hood side magnet 142 and the lens barrel side magnet 141 are attracted, the attraction force restricts their relative rotation in the direction in which the hood 120 is detached from the lens barrel 110, and the hood 120 is attached to the lens barrel 110. It is fixed against.

  In the optical system 2 of Embodiment 2, when the lens barrel 110 and the hood 120 are attached, a state in which repulsive force is generated between the lens barrel side magnet 141 and the hood side magnet 142 is changed to a state in which attractive force is generated. Transition. The user can obtain a stronger click feeling than that of the first embodiment at the moment when this state shifts.

[Embodiment 3]
Next, Embodiment 3 of the optical system to which the present invention is applied will be described.
4A and 4B are side views showing the optical system of Embodiment 3, wherein FIG. 4A shows a state before the lens barrel and the lens hood are attached, FIG. 4B shows a state in the middle of attachment, and FIG. The state where these relative rotations are locked is shown, and (d) shows the state where these mountings are completed.
FIG. 5 is an enlarged view of a portion V in FIG.
The optical system 3 of Embodiment 3 includes a moving unit 241, a spring 242, a groove 243, and a magnet 244 as the adsorbing unit 240 (the adsorbing unit 240 is not shown).
The moving part 241 is a small rectangular parallelepiped piece formed of an iron-based metal material, and is provided on the claw part 261 of the hood side mount part 260 instead of the iron piece of the first embodiment.
The moving portion 241 is movable in the optical axis direction with respect to the hood 220 between a protruding position protruding from the end of the hood 220 on the optical axis direction image side and a storage position stored in the claw portion 261. It has become.

The spring 242 is a torsion spring having one end connected to the claw 261 of the hood-side mount 260 and the other end connected to the moving part 241. The spring 242 biases the moving part 241 to the storage position.
The hood 220 includes an operation unit (not shown). The operation unit is connected to the moving unit 241, and the user of the optical system 3 can move the moving unit 241 from the protruding position to the storage position by operating the operating unit.

The groove portion 243 is formed by recessing the base portion 251 of the lens barrel side mount portion 250. The groove portion 243 is provided, for example, in the vicinity of the closed end of the guide portion 257 in the lens barrel side mount portion 250.
The groove portion 243 and the moving portion 241 are in a state where the claw portion 261 of the hood side mount portion 260 is in contact with the locking portion 254 and the relative rotation in the mounting direction of the lens barrel 210 and the hood 220 is locked. The moving part 241 is engaged by shifting to the protruding state.
The magnet 244 is provided at the bottom of the groove 243. The magnet 244 has a property of adsorbing to a moving part 241 formed of an iron-based metal material.
The magnetic force acting between the magnet 244 and the moving part 241 is set larger than the urging force of the spring 242 against the moving part 241.

Next, the operation when the lens barrel 210 and the hood 220 are mounted in the optical system 3 of Embodiment 3 will be described. For ease of understanding, FIG. 4 shows a case where the lens barrel 210 is fixed and the hood 220 is rotated with respect to the lens barrel 210.
In the optical system 3 of the third embodiment, as in the optical system 1 of the first embodiment, first, the claw portion 261 of the hood side mount portion 260 is inserted into the insertion portion of the lens barrel side mount portion 250 (FIG. 4 ( b)).
Next, the lens barrel 210 and the hood 220 are relatively rotated in the mounting direction, and the claw portion 261 of the hood side mount portion 260 is inserted into the guide portion 257 of the lens barrel side mount portion 250 (see FIG. 4C). ).

Here, when the lens barrel 210 and the hood 220 are relatively rotated in the mounting direction and the claw portion 261 comes into contact with the locking portion 254, the moving portion 241 is moved by the magnetic force acting between the moving portion 241 and the magnet 244. It moves from the storage position to the protruding position and is attracted to the magnet 244 (see FIG. 4D).
In a state where the moving part 241 and the magnet 244 are attracted, the moving part 241 is fitted in the groove part 243, and the lens barrel 210 and the hood 220 are limited in relative rotation in the direction opposite to the mounting direction. The
When removing the hood 220 from the lens barrel 210, the operation unit is operated to move the moving unit 241 to the storage position, and in this state, the lens barrel 210 and the hood 220 are moved in a direction opposite to the mounting direction. Rotate relative.

  According to the optical system of the third embodiment, the relative rotation in the direction opposite to the mounting direction of the lens barrel 210 and the hood 220 is mechanically limited by the moving portion 241 and the groove portion 243. 220 can be mounted more securely.

[Embodiment 4]
Next, Embodiment 4 of the optical system to which the present invention is applied will be described.
6A and 6B are views of the mount portions of the respective elements constituting Embodiment 4 of the optical system to which the present invention is applied, as viewed from the optical axis direction. FIG. 6A shows the lens barrel side mount portion, and FIG. (C) has shown the state which these mount parts engaged.
The optical system 4 according to the fourth embodiment does not include the locking portion 54 provided in the lens barrel side mount portion 50 in the first embodiment. Therefore, the lens barrel side mount portion 350 and the hood side mount portion 360 regulate the position in the direction orthogonal to the relative rotational direction in the state where the hood 320 and the lens barrel 310 are attached to each other, and The relative rotational direction position is not restricted.
Further, the magnet 341 is provided, for example, at a substantially central portion in the circumferential direction of the claw portion 355 of the lens barrel side mount portion 350.
Further, the iron piece 342 is also provided, for example, at a substantially central portion in the circumferential direction around the optical axis in the claw portion 361 of the hood-side mount portion 360.
Moreover, the magnet 341 and the iron piece 342 can be provided at arbitrary positions where they can be attracted to each other.

  According to the optical system 4 of the fourth embodiment, the lens barrel 310 and the hood 320 are even when the claw portion 361 is relatively rotated in the direction opposite to the mounting direction after the insertion portion 356 is inserted. Since the magnet 341 and the iron piece 342 are attracted, it is easy to use.

[Deformation]
The optical system and optical apparatus of the present invention are not limited to the above-described embodiments, and various modifications and changes as described below are possible, and these are also included in the technical scope of the present invention.
(1) The configuration of the optical system is not limited to that described in the embodiment, and can be changed as appropriate. For example, the attracting member in the embodiment is a magnet, but the attracting member is not limited to this, and may be another member as long as it generates an attracting force with the mounted member.
Further, the configuration for generating the suction force of the mounting member shown in the embodiment may be provided in the mounted member, and the configuration for generating the suction force of the mounting member shown in the embodiment may be provided in the mounting member.
Furthermore, in the embodiment, the pair of bayonet mount claws are provided on the lens barrel and the hood, respectively. However, the number of claws is not limited to this, and for example, three or more may be provided. Good.
(2) In the optical system of the embodiment, the lens barrel and the hood are mounted. However, the combination of the mounting member and the mounted member is not limited to this. For example, a lens cap or a lens filter is attached to the lens mirror. It may be mounted on a cylinder (including an interchangeable lens).
(3) In the first, third, and fourth embodiments, a magnet is provided on the lens barrel side and an iron piece (moving portion in the third embodiment) is provided on the hood side. For example, a magnet is provided on both the lens barrel and the hood. May be provided.

It is a figure which shows Embodiment 1 of the optical system to which this invention is applied. It is a figure which shows the mount part of each element which comprises the optical system of FIG. It is a figure which shows Embodiment 2 of the optical system to which this invention is applied. It is a figure which shows Embodiment 3 of the optical system to which this invention is applied. It is the V section enlarged view of FIG. It is a figure which shows Embodiment 4 of the optical system to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical system: 10 Lens barrel: 11 Main part 20 Lens hood: 21 Main part: 30 Bayonet mount 41 Magnet: 42 Iron piece: 50 Lens side mount part 54 Locking part: 60 Hood side mount part

Claims (11)

A main body having a second mount that can be engaged with the bayonet-type first mount of the mounted member;
An optical device comprising: a suction member that generates a suction force with the mounted member at a position where the first mount portion and the second mount portion are engaged with each other. The optical device according to claim 1,
The optical device, wherein the attraction member is a magnet. An optical device according to claim 1 or claim 2, wherein
The second mount portion includes a claw portion that regulates relative rotation with the first mount portion,
The optical device, wherein the suction member is provided at or near the claw portion. An optical device according to claim 2 or claim 3, wherein
The optical device, wherein the magnet has an S pole and an N pole arranged along a relative rotation direction of the first mount portion and the second mount portion. An optical device according to any one of claims 1 to 4, wherein
An optical device comprising any one of a lens barrel, an interchangeable lens, a lens hood, a filter, and a lens cap. An optical system including a mounting member and a mounted member,
The mounting member is the optical device according to any one of claims 1 to 5,
The mounted member is
The main body,
The first mount portion provided in the main body portion;
An adsorbed member provided in the first mount portion or in the vicinity thereof,
The first mount portion and the second mount portion engage with each other;
The optical system, wherein the adsorption member and the member to be adsorbed are coupled to each other. The optical system according to claim 6, comprising:
The first mount portion includes a claw portion that regulates relative rotation with the second mount portion,
The optical system is characterized in that the attracted member is provided at or near the claw portion. An optical system according to claim 6 or claim 7,
The attracting member and the attracted member are magnets,
In a state where the mounting member and the mounted member are mounted to each other, the first mount portion and the second mount portion are orthogonal to the relative rotation direction of the mounting member and the mounted member. An optical system that restricts a position in a direction and does not restrict a position in the relative rotation direction. An optical system according to any one of claims 6 to 8, comprising:
At least one of the first mount portion and the second mount portion includes a locking portion that locks relative rotation between the mounting member and the mounted member,
The optical system, wherein the suction member is disposed in the vicinity of the sucked member in a state of being locked to the locking portion. The optical system according to claim 9, comprising:
At least one of the adsorbing member and the adsorbed member is disposed in the vicinity of the locking portion. An optical system according to any one of claims 6 to 10, comprising:
The mounting member includes a groove formed from the second mount portion along a direction orthogonal to a relative rotation direction of the mounting member and the mounted member,
The mounted member includes a moving unit that is movable along the groove in a state where the mounted member and the mounted member are mounted to each other.
The adsorbing member is provided in or near the groove,
The optical system, wherein the moving part includes the member to be attracted.

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