Holding member, lens barrel, and image pickup apparatus

Abstract

A holding member, a lens barrel, and an image pickup apparatus are provided. The holding member includes a holder configured to hold the lens, and an outer peripheral portion integrally molded with the holder and disposed on an outer periphery of the holder. When viewed from an optical axis direction, the holder has a plurality of through grooves along a circumferential direction on an outer circumferential side of a plurality of contact portions contacting the lens.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a holding member, a lens barrel, and an image pickup apparatus. BACKGROUND

[0002] In recent years, a lens holding frame has been used for optical apparatuses such as digital cameras, camcorders, and interchangeable lenses, to reduce impact and stress on lenses.

[0003] Japanese Patent Application Publication No. 2015-169916 discloses a lens holding frame including a cylindrical member and a lens holding member arranged on an inner peripheral side of the cylindrical member and holding a lens, in which a portion of the lens holding member elastically deforms in a case where the cylindrical member receives an external force.

[0004] However, in the lens holding frame disclosed in Japanese Patent Application Publication No. 2015-169916, in a case where a strong impact is applied to the cylindrical member, the portion of the lens holding member that elastically deforms can be damaged, and the held lens is also damaged. SUMMARY

[0005] A holding member according to one aspect of the present disclosure includes a holder configured to hold a lens, and an outer peripheral portion that is integrally molded with the holder and arranged on an outer peripheral side of the holder. The holder has, on the outer peripheral side of a plurality of contact portions that contact the lens, a plurality of through grooves along a circumferential direction when viewed from an optical axis direction. A lens barrel and an image pickup apparatus each having the above-described holding member also constitute another aspect of the present disclosure.

[0006] Other features of various embodiments of the present disclosure will become apparent from the following description of embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1A and Figure 1B is an external view of a camera system according to this embodiment of the present disclosure.

[0008] Figure 2 is a block diagram showing an electrical and optical configuration of the camera system.

[0009] Figure 3 is a cross-sectional view of the interchangeable lens at a wide-angle end.

[0010] Figure 4 is a cross-sectional view of the interchangeable lens at a telephoto end.

[0011] Figure 5 is a cross-sectional view of the interchangeable lens at a retracted end.

[0012] Figure 6A and Figure 6B A first zoom unit is explained.

[0013] Figure 7 A first lens holder is shown as viewed from the optical axis direction.

[0014] Figure 8A 、 Figure 8B and Figure 8C A first lens holder is explained.

[0015] Figure 9A and Figure 9B A first lens holder is explained.

[0016] Figure 10 is a side view of a camera system with a suspension.

[0017] Figure 11 is a front view of a camera system with a suspension. DETAILED DESCRIPTION

[0018] A detailed explanation will now be given of an embodiment according to the present disclosure, with reference to the drawings. Corresponding elements in the respective drawings will be denoted by the same reference numerals, and repeated explanation thereof will be omitted.

[0019] Figure 1A and Figure 1B are perspective views of a camera system (imaging apparatus) according to this embodiment of the present disclosure. The camera system includes a interchangeable lens (lens barrel) 100 and a digital camera (hereinafter referred to as a camera body) 1 to which the interchangeable lens 100 is detachably attached. Although the configuration of the interchangeable lens 100 will be explained in this embodiment, the present application is also applicable to other optical apparatuses such as a lens-integrated camera, etc.

[0020] Figure 1A and Figure 1B respectively show the camera system as viewed from the front side (object side) and the rear side (imaging surface side). In this embodiment, as shown in Figure 1A , the optical axis direction is defined as the X-axis direction, which is the direction in which the optical axis of the imaging optical system housed in the interchangeable lens 100 extends (direction along the optical axis), and the directions orthogonal to this direction are defined as the Z-axis direction (horizontal direction) and the Y-axis direction (vertical direction). Hereinafter, the Z-axis direction and the Y-axis direction will be collectively referred to as the Z / Y-axis direction. The direction of rotation about the Z-axis is defined as the tilt direction, and the direction of rotation about the Y-axis is defined as the yaw direction. The tilt direction and the yaw direction (hereinafter collectively referred to as the tilt / yaw direction) are the directions of rotation about two mutually orthogonal axes (Z-axis and Y-axis).

[0021] The grip portion 2 for the user to hold the camera body 1 with his hand is provided on the left side (right side when viewed from the rear side) when viewed from the front side of the camera body 1.

[0022] The power operation unit 3 is provided on the upper surface of the camera body 1. In a case where the user turns on the power operation unit 3 while the camera body 1 is in a power-off state, power is activated and the camera body 1 is turned on, a computer program such as a home position detection process for a focusing unit is executed, and the camera body is in a standby state for imaging. In a case where the user turns off the power operation unit 3 while the camera body 1 is in a power-on state, the camera body 1 is turned off.

[0023] The mode dial 4, the release button 5, and the accessory socket 6 are provided on the upper surface of the camera body 1. The user can switch an imaging mode by rotating the mode dial 4. The imaging modes include a manual still image capturing mode in which the user can set imaging conditions such as a shutter speed and an aperture value (F number), an automatic still image capturing mode in which proper exposure is automatically obtained, and a moving image capturing mode for capturing a moving image. The user can instruct an imaging preparation operation such as an automatic focusing (AF) and an automatic exposure (AE) control by half-pressing the release button 5, and can instruct imaging by fully pressing the button. An accessory such as an external flash is detachably attached to the accessory socket 6.

[0024] The interchangeable lens 100 includes a lens interface 102 that can be mechanically and electrically connected to a camera interface 7 provided on the camera body 1. The lens interface 102 and the camera interface 7 each have a circular ring shape, are made of a metal material, and can be attached and detached via a bayonet connection (not shown). There is no limitation on the combination of the interchangeable lens 100 and the camera body 1 as long as they use a common interface shape with the camera system.

[0025] The interchangeable lens 100 includes an imaging optical system that forms an object image using light from an object.

[0026] The outer periphery of the interchangeable lens 100 is provided with a zoom operation ring 103 that is rotatable around an optical axis by user operation. In a case where the user rotates the zoom operation ring 103, a zoom unit in the imaging optical system is moved to a predetermined use position corresponding to the angle of the zoom operation ring 103 in a range from a wide-angle end to a telephoto end. This configuration enables the user to perform imaging at a desired angle of view. In this embodiment, a retracted end is provided outside a range in which the zoom operation ring 103 is rotated from the telephoto end to the wide-angle end, where imaging is restricted. The retracted end is a position in which the interchangeable lens 100 is most retracted.

[0027] As Figure 1BAs shown, a back operation unit 8 and a display unit 9 are provided on the back of the camera body 1. The back operation unit 8 includes a plurality of buttons and dials assigned with various functions. In a case where the camera body 1 is turned on and a still or moving image capturing mode is set, a through image of a subject image formed on an image sensor, which will be described later, is displayed on the display unit 9. The display unit 9 also displays a shooting parameter indicating a shooting condition such as a shutter speed and an aperture value, and a user can change the setting of the shooting parameter while observing the display by operating the back operation unit 8. The back operation unit 8 includes a playback button for instructing playback of a recorded captured image, and in a case where the user operates the playback button, the captured image is played back and displayed on the display unit 9. The display unit 9 can be of a touch panel type, and has the same functions as the back operation unit 8.

[0028] Figure 2 is a block diagram showing the electrical and optical configuration of the camera system. The camera body 1 includes a power supply unit 10 that supplies power to the camera body 1 and the interchangeable lens 100, and an operation unit 11 that includes the touch panel functions of the power supply operation unit 3, the mode dial 4, the release button 5, the back operation unit 8, and the display unit 9.

[0029] In this embodiment, the camera system is controlled by a camera control unit 12 provided in the camera body 1 and a lens control unit 104 provided in the interchangeable lens 100 that works together. The camera control unit 12 and the lens control unit 104 each have a built-in computer for controlling the camera body 1 and the interchangeable lens 100, respectively, and control the camera system by linking them. The camera control unit 12 reads and executes a computer program stored in a memory 13. At this time, the camera control unit 12 communicates with the lens control unit 104 via communication terminals of electrical contacts 105 provided on the lens interface 102, and transmits various control signals, data, and the like. The electrical contacts 105 include power supply terminals that supply power from the power supply unit 10 to the interchangeable lens 100.

[0030] The shooting optical system in the interchangeable lens 100 includes a zoom unit 109 connected to the zoom operation ring 103 and moving in the optical axis direction to change the angle of view, and an aperture unit 301 that adjusts the amount of light. The shooting optical system also includes a shift lens as an image stabilizing element, and includes a lens image stabilizing unit 130 that reduces image blur by moving (shifting) in the Z / Y axis direction orthogonal to the optical axis. The shooting optical system also includes a focus unit 160 that includes a focus lens moving in the optical axis direction for focusing.

[0031] The interchangeable lens 100 includes an aperture drive unit 302 that drives an aperture unit 301, an image stabilization drive unit 311 that moves a lens image stabilization unit 130, and a focus drive unit 601 that moves a focus unit 160.

[0032] The camera body 1 includes a shutter unit 14, a shutter drive unit 15, an image sensor 16, an image processing unit 17, and a camera control unit 12. The shutter unit 14 controls the amount of light exposed by the image sensor 16. The image sensor 16 photoelectrically converts a subject image formed by an imaging optical system and outputs an imaging signal. The image processing unit 17 generates an image signal after performing various image processing on the imaging signal. The display unit 9 displays an image signal (through image) output from the image processing unit 17, displays the imaging parameters as described above, and plays back and displays a captured image recorded in the memory 13 or a recording medium (not shown).

[0033] The camera control unit 12 controls the focus drive unit 601 in accordance with an imaging preparation operation in the operation unit 11, such as half-pressing of the release button 5. For example, in a case where an AF operation is instructed, a focus detector 18 determines the focus state of a subject image formed on the image sensor 16 based on an image signal generated by the image processing unit 17, generates a focus signal, and transmits it to the camera control unit 12. Meanwhile, the focus drive unit 601 transmits information on the current position of the focus unit 160 to the camera control unit 12. The camera control unit 12 compares the focus state of the subject image with the current position of the focus unit 160, calculates a focus drive amount from the shift amount, and transmits it to the lens control unit 104. Then, the lens control unit 104 moves the focus unit 160 to a target position in the optical axis direction via the focus drive unit 601, and corrects the defocus state of the subject image.

[0034] The focus drive unit 601 includes a focus motor that functions as an actuator and a light interrupter that functions as a detector that detects the origin position of the focus unit 160. Generally, a stepping motor that is one type of actuator is commonly used as the focus motor. A DC motor or an ultrasonic motor equipped with an encoder, or a servo motor, or the like can be used as the focus motor. The light interrupter receives light emitted from a light emitting unit directly at a light receiver, but instead, a light reflector that receives reflected light from a reflecting surface or a brush that contacts a conductive pattern to electrically detect a signal can be used as the detector.

[0035] The camera control unit 12 controls the driving of the aperture unit 301 and the shutter unit 14 via the aperture driving unit 302 and the shutter driving unit 15 in accordance with the aperture value and shutter speed setting received from the operation unit 11. For example, in the case where an AE control operation is instructed, the camera control unit 12 receives a luminance signal generated by the image processing unit 17 and performs a photometry calculation. Based on the result of this photometry calculation, the camera control unit 12 controls the aperture driving unit 302 in accordance with a photographing instruction operation on the operation unit 11, such as a full press of the release button 5. At the same time, the camera control unit 12 controls the driving of the shutter unit 14 via the shutter driving unit 15 and performs an exposure process by the image sensor 16.

[0036] The camera body 1 has a pitch shake detector 19 and a yaw shake detector 20 as shake detectors configured to detect image shake caused by hand shake or the like of the user. The pitch shake detector 19 and the yaw shake detector 20 detect image shake in the pitch direction and the yaw direction using an angular velocity sensor (vibration gyroscope) and an angular acceleration sensor, respectively, and output a shake signal. The camera control unit 12 uses the shake signal from the pitch shake detector 19 to calculate the shift position of the lens image stabilization unit 130 in the Y-axis direction. Similarly, the camera control unit 12 uses the shake signal from the yaw shake detector 20 to calculate the shift position of the lens image stabilization unit 130 in the Z-axis direction. Then, the camera control unit 12 moves the lens image stabilization unit 130 to a target position in the Z / Y-axis direction via the image stabilization driving unit 311 in accordance with the calculated shift position in the pitch / yaw direction, thereby reducing image blur during exposure or during through-image display.

[0037] The interchangeable lens 100 includes a zoom operation ring 103 for changing the angle of view of the photographing optical system, and a zoom detector 106 configured to detect the angle of the zoom operation ring 103. The zoom detector 106 detects the angle of the zoom operation ring 103 operated by the user in absolute value, and includes, for example, a resistance linear potentiometer. Information on the angle of view detected by the zoom detector 106 is sent to the lens control unit 104, and is reflected in various controls of the camera control unit 12. Part of this information is recorded in the memory 13 or a recording medium (not shown) together with the captured image.

[0038] The positional relationship of the main components of the interchangeable lens 100 will be described below. Figures 3 to 5 is a cross-sectional view in the XY plane including the optical axis. The center line shown here is substantially the same as the optical axis determined by the photographing optical system, and is therefore synonymous with the optical axis hereinafter.

[0039] Figure 3 The wide-angle end on the short-focus side in zooming is shown, whileFigure 4 The telephoto end on the long focal side in zooming is shown. Figure 5 The retracted end with the shortest total length in the optical axis direction is shown. Figure 5 The retracted end in the embodiment is set to further exceed Figure 3 The wide-angle end in the embodiment, and by rotating the zoom operation ring 103 in one direction, Figure 5 The retracted end in the embodiment moves to Figure 3 The wide-angle end in the embodiment, and then from Figure 3 The wide-angle end in the embodiment moves to Figure 4 The telephoto end in the embodiment.

[0040] In Figure 3 and Figure 4 , the camera system is in a photographable state in which the photographing optical system is located at a photographable position (photographing state). The photographable state refers to a state in which the functions of the camera system can operate normally. In Figure 5 , the camera system is in a state in which the photographing optical system is located at a retracted position and photographing is restricted (retracted state). The state in which photographing is restricted refers to a state in which some functions of the camera system cannot operate normally. For example, photographing is available in the retracted state (e.g., pressing the shutter to photograph a subject), but the image can be out of focus or the like, resulting in a partially or completely blurred image.

[0041] As shown in Figure 3 and Figure 4 , this embodiment adopts a seven-unit configuration as an example of the photographing optical system. The zoom unit 109 moves to different predetermined use positions at the wide-angle end and the telephoto end, respectively, and guides light from a subject to the image sensor 16. The zoom unit 109 includes a first zoom unit 110, a second zoom unit 120, a lens image stabilization unit 130 serving as a third zoom unit, a fourth zoom unit 140, a fifth zoom unit 150, a focusing unit 160 serving as a sixth zoom unit, and a seventh zoom unit 170. The zoom unit 109 can also have an aperture unit 301. The photographing optical system is not limited to a seven-unit configuration. For example, the lens image stabilization unit 130 and the focusing unit 160 can serve as additional zoom units. Some lens units can be fixed rather than movable.

[0042] The straight guide cylinder 107 is a fixed portion fixed to the lens mount 102 via the fixed cylinder 101. Bayonet claws (not shown) are placed at regular intervals on the outer peripheral surface of the straight guide cylinder 107. A circumferential groove (not shown) is provided on the inner peripheral surface of the cam cylinder 108. The cam cylinder 108 is connected to the zoom operation ring 103. In the case where the user rotates the zoom operation ring 103, the bayonet claws engage with the circumferential groove to restrict the movement of the cam cylinder 108 in the optical axis direction, and the cam cylinder 108 rotates around the optical axis.

[0043] The straight guide cylinder 107 has straight guide grooves formed at regular intervals, which restrict movement of the zoom unit 109 in the rotation direction and guide straight movement in the optical axis direction. The cam cylinder 108 has cam grooves at regular intervals, each of which has a different angle in the rotation direction corresponding to the zoom unit 109. The zoom unit 109 has a plurality of rollers, each of which engages with a corresponding straight guide groove and cam groove. In a case where the user rotates the zoom operation ring 103, the cam cylinder 108 rotates, and the rollers move the zoom unit 109 back and forth in the optical axis direction while restricting movement in the rotation direction by engagement with the straight guide grooves and cam grooves.

[0044] In this embodiment, the interchangeable lens 100 has a retractable (collapsible) mechanism so that the zoom unit 109 can be further retracted toward the rear side (imaging surface side) during non-imaging. Therefore, the total length of the interchangeable lens 100 can be reduced, and the portability of the interchangeable lens 100 and the camera body 1 can be improved.

[0045] In Figure 3 at the wide-angle end, the distance between the second zoom unit 120 and the lens image stabilization unit 130 serving as the third zoom unit is wide, and at Figure 4 at the telephoto end, the distance between the first zoom unit 110 and the second zoom unit 120 is wide. The retractable mechanism narrows each of these distances, moves them to a housed position close to each other, and reduces the total length in the optical axis direction. In Figure 5 at the retracted end during non-imaging in Figure 5 , the zoom unit 109 has moved to a housed position in which parts of the zoom unit 109 are close to each other. From Figure 3 , for example, in a case where the user rotates the zoom operation ring 103 to the wide-angle end, the zoom unit 109 is extended to the front side (subject side) and moved to a predetermined use position, thereby enabling the user to perform imaging as shown in

[0046] The shape of the first zoom unit 110 will be described below. Figure 6A and Figure 6B The first zoom unit 110 is explained. Figure 6A is a cross-sectional view of the first zoom unit 110. Figure 6B is an enlarged view of the front end portion A of the first zoom unit 110 shown in Figure 6A

[0047] ​The first zoom unit 110 includes a first lens 111, a first lens holder 112, and a name ring (not shown). The first lens holder 112 has a lens holder (holder) 113a that holds the first lens 111, and a peripheral portion 113b that is integrally molded with the lens holder 113a and is arranged on the outer periphery of the lens holder 113a. An appearance portion 114 that forms an appearance is arranged on the outer periphery of the first lens holder 112. In this embodiment, the lens holder 113a holds the first lens 111 near the center when viewed from the optical axis direction. The lens holder 113a holds the first lens 111 by caulking (crimping). More specifically, in this embodiment, the lens holder 113a has a caulking claw shape, and the first lens 111 is held in the first lens holder 112 by thermal caulking. The shape and method are not limited as long as the first lens 111 is held in the first lens holder 112.

[0048] The lens holder 113a has, on the outer peripheral side of the plurality of contact portions at which the lens holder 113a contacts the first lens 111, a plurality of through grooves 115 along the circumferential direction when viewed from the optical axis direction. Each of the plurality of through grooves 115 has an arc shape.

[0049] An accessory attachment portion (attachment portion) 118 for attaching an accessory is provided on a part of the outer periphery of the peripheral portion 113b. The accessory attachment portion 118 is located on the outermost periphery of the first lens holder 112. The accessory attachment portion 118 is also located outside the lens holder 113a in the optical axis direction. In other words, the accessory attachment portion 118 is provided so as not to overlap with the lens holder 113a in the optical axis direction.

[0050] Figure 7 The first lens holder 112 is shown as viewed from the optical axis direction. As described above, the first lens holder 112 has a plurality of through grooves 115. In this embodiment, the plurality of through grooves 115 are four through grooves 115a, 115b, 115c, and 115d. The through grooves 115a, 115b, 115c, and 115d are provided at regular intervals along the circumferential direction, and in this embodiment, they are respectively provided on the lower side, the right side, the upper side, and the left side in the normal posture of the camera (in the posture in which the camera system is used in the state of Figure 1A and Figure 1B In the circumferential ranges 115A, 115B, 115C, and 115D of the through grooves 115a, 115b, 115c, and 115d, the circumferential range 115A of the through groove 115a located at the lowest position is the widest. The joint portions 119a and 119b connect the lens holder 113a and the peripheral portion 113b.

[0051] Figure 8A 、 Figure 8B 、 Figure 8C 、 Figure 9A and Figure 9B Explanation of the first lens holder 112. Figure 8A is a perspective view of the first lens holder 112 when viewed from above in the camera normal attitude. Figure 8B and Figure 8C are enlarged views of regions B and C, respectively, in Figure 8A . Figure 9A is a perspective view of the first lens holder 112 when viewed from below in the camera normal attitude. Figure 9B is an enlarged view of region D in Figure 9A .

[0052] The first lens holder 112 has lens receiving surfaces 117a, 117b, and 117c on the inner diameter side of the lens holder 113a. The lens receiving surfaces 117a, 117b, and 117c contact the first lens 111 in the optical axis direction. In the camera normal attitude, the first lens holder 112 has lens engaging portions 116a and 116b on the lower side and a lens engaging portion 116c on the upper side on the inner diameter side of the lens holder 113a. The lens engaging portions 116a, 116b, and 116c engage with a portion of the outer peripheral surface of the first lens 111. When viewed from the optical axis direction in the camera normal attitude, the lens engaging portions 116a, 116b, and 116c are respectively arranged at the same phase (at the same position in the circumferential direction) as the lens receiving surfaces 117a, 117b, and 117c. In this embodiment, the contact portions that contact the first lens 111 are formed by the lens engaging portions and the lens receiving surfaces that are arranged at the same phase. The "same phase" not only refers to an exactly same phase, but also includes a case where the lens engaging portions are substantially at the same phase (approximately at the same phase).

[0053] When viewed from the optical axis direction in the camera normal attitude, on the lower side, as shown in Figure 7 、 Figure 8A 、 Figure 8B and Figure 8C , the lens engaging portion 116a and the lens receiving surface 117a are arranged at the same phase (including approximately the same phase) as the phase of the joint portion 119a. The lens engaging portion 116b and the lens receiving surface 117b are arranged at the same phase (including approximately the same phase) as the phase of the joint portion 119b. That is, the lens engaging portion 116a and the lens receiving surface 117a and the lens engaging portion 116b and the lens receiving surface 117b are arranged so that they do not overlap the through groove in the circumferential direction. In this embodiment, the lens engaging portion 116a and the lens receiving surface 117a form a first contact portion. Similarly, the lens engaging portion 116b and the lens receiving surface 117b form a first contact portion.

[0054] When viewed from the optical axis direction in the normal posture of the camera, the lens engaging portion 116c and the lens receiving surface 117c are arranged so that they overlap the through groove 115c in the circumferential direction, as shown in the upper side in Figure 7 , Figure 9A and Figure 9B In this embodiment, the lens engaging portion 116c and the lens receiving surface 117c form the second contact portion. In this embodiment, the lens engaging portion 116c and the lens receiving surface 117c are arranged at the center of the through groove 115c. The center refers not only to the exact center but also to the substantial center (approximately the center).

[0055] When viewed from the optical axis direction in the normal posture of the camera, the through groove 115a is formed below the first lens holder 112, and the joint portions 119a and 119b are provided at both ends of the through groove 115a. As described above, the lens engaging portion 116a and the lens receiving surface 117a are arranged at the same phase as that of the joint portion 119a, and the lens engaging portion 116b and the lens receiving surface 117b are arranged at the same phase as that of the joint portion 119b. Due to this configuration, the first lens 111 does not come into contact with the first lens holder 112 within the circumferential range 115A of the through groove 115a.

[0056] When viewed from the optical axis direction in the normal posture of the camera, the lens engaging portion 116c and the lens receiving surface 117c are arranged on the upper side near the center of the circumferential range 115C of the through groove 115c.

[0057] In this embodiment, the three lens engaging portions and the three lens receiving surfaces are provided at substantially regular intervals so that the first lens 111 is held in the first lens holder 112 in a well-balanced manner.

[0058] Next, the impact applied to the interchangeable lens 100 will be described. Figure 10 is a side view of the camera system suspended by the strap 21. Figure 11 is a front view of the camera system suspended by the strap 21.

[0059] In the case where the camera system collides with the ground 30 or the like while being suspended by the strap 21, the interchangeable lens 100 will fall to the ground 30 along the arrow A due to the positional relationship of the strap 21 with respect to the camera body 1. As described above, the accessory attachment portion 118 is provided on a part of the outermost circumference of the first lens holder 112 and is located outside the lens holder 113a in the optical axis direction. Therefore, the interchangeable lens 100 falls from the accessory attachment portion 118 and receives the greatest impact from the circumferential range 115A.

[0060] In the case where the camera system collides with the wall 31 or the like while being suspended by the strap 21, the interchangeable lens 100 collides with the wall 31 along the arrows B, C, and D. Therefore, the interchangeable lens 100 is subjected to an impact from the circumferential ranges 115B, 115C, and 115D.

[0061] In this embodiment, as described above, the first lens 111 does not contact the first lens holder 112 within the circumferential range 115A of the through groove 115a provided on the lower side when viewed from the optical axis direction in the normal posture of the camera. The through groove 115a elastically deforms the first lens holder 112. Therefore, even if the camera system collides with the ground 30 or the like while being suspended by the strap 21 and receives a strong impact, the impact is less likely to be transmitted to the first lens 111, and the first lens 111 is less likely to be damaged.

[0062] As described above, the through grooves 115b, 115c, 115d on the upper side, the left side, and the right side are respectively provided within the circumferential ranges 115B, 115C, and 115D, and the first lens holder 112 is elastically deformable when viewed from the optical axis direction in the normal posture of the camera. Therefore, even if the camera system collides with the wall 31 or the like while being suspended by the strap 21 and receives an impact, the impact is less likely to be transmitted to the first lens 111, and the first lens 111 is less likely to be damaged.

[0063] Since no components need to be added to absorb the impact, the number of components and the size of the outermost diameter of the interchangeable lens 100 can be reduced.

[0064] While the present disclosure has illustrated example embodiments, it should be understood that the present disclosure is not limited to the example embodiments. The scope of the appended claims should be construed in the broadest sense in order to encompass all such modifications and equivalent structures and functions.

[0065] This embodiment can provide a holding member that can reduce damage to a lens when an impact or the like is applied.

Claims

1. A holding member comprising: a holder configured to hold a lens; and a peripheral portion that is integrally molded with the holder and arranged on a periphery of the holder, characterized in that the holder has, on a periphery side of a plurality of contact portions that contact the lens, a plurality of through grooves along a circumferential direction when viewed from an optical axis direction.

2. The retaining member of claim 1, wherein Each of the plurality of through grooves has an arc shape.

3. The retaining member of claim 1, wherein The plurality of contact portions include a first contact portion and a second contact portion, the first contact portion is arranged at a position where the through grooves do not overlap in the circumferential direction, and the second contact portion is arranged at a position where one of the through grooves overlaps in the circumferential direction, wherein the first contact portion is arranged below the second contact portion when the holding member is in a normal attitude.

4. The retaining member of claim 3, wherein The second contact portion is arranged at a center of the one of the through grooves in the circumferential direction.

5. The retaining member of claim 3, wherein Each of the plurality of contact portions includes an engaging portion that engages with a portion of an outer peripheral surface of the lens and a receiving surface that contacts the lens in the optical axis direction.

6. The retention member of claim 1, wherein The plurality of through grooves includes four through grooves formed at regular intervals along the circumferential direction, wherein one of the through grooves located at a bottom has a longest length in the circumferential direction when the holding member is in the normal attitude.

7. The retaining member of claim 1, wherein The holder holds the lens by caulking.

8. The retention member of any one of claims 1 to 7, wherein, An attachment portion for attaching an accessory is provided on a portion of a periphery of the peripheral portion.

9. The retaining member of claim 8, wherein, The attachment portion is provided so that the attachment portion does not overlap with the holder in the optical axis direction.

10. The retaining member of claim 8, wherein The attachment portion is located at an outermost side. 11.A lens barrel comprising: the holding member according to any one of claims 1 to 10; and at least one lens.

12. The lens barrel according to claim 11, characterized by The lens held in the holding member is arranged closest to a subject in the optical axis direction. 13.A camera device comprising: the lens barrel according to claim 11; and an image sensor.

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