Holding member, lens barrel, and imaging apparatus

Abstract

To provide a holding member capable of reducing breakage of a lens when an impact or the like is applied.SOLUTION: The holding member includes a holding portion that holds the lens and an outer peripheral portion that is integrally molded with the holding portion and is disposed on an outer periphery of the holding portion, and a plurality of through-grooves are formed in the holding portion along a circumferential direction on an outer peripheral side of a plurality of contact portions that come into contact with the lens when viewed from the optical axis direction.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a holding member, a lens barrel, and an imaging device. [Background technology]

[0002] In recent years, optical devices such as digital cameras, video cameras, and interchangeable lenses have adopted lens holding frames to suppress impacts and stresses on lenses. Patent Document 1 discloses a lens holding frame that has a cylindrical member and a lens holding member that is disposed on the inner periphery of the cylindrical member and holds a lens, and that elastically deforms a part of the lens holding member when the cylindrical member is subjected to an external force. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-169916 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the lens holding frame of Patent Document 1, if a strong impact is applied to the cylindrical member, the lens holding member, a portion of which elastically deforms, may be broken, and the held lens may also be broken.

[0005] An object of the present invention is to provide a holding member that can reduce damage to a lens when an impact or the like is applied. [Means for solving the problem]

[0006] A holding member according to one aspect of the present invention has a holding portion that holds a lens, and an outer peripheral portion that is integrally molded with the holding portion and is positioned on the outer periphery of the holding portion, and is characterized in that the holding portion has a plurality of through grooves formed along the circumferential direction, outer periphery of a plurality of contact portions that contact the lens, when viewed from the optical axis direction. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a holding member that can reduce damage to a lens when an impact or the like is applied. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a camera system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a block diagram showing the electrical and optical configuration of the camera system. [Figure 3] FIG. 2 is a cross-sectional view of the interchangeable lens at the wide-angle end. [Figure 4] FIG. 2 is a cross-sectional view of the interchangeable lens at the telephoto end. [Figure 5] FIG. 2 is a cross-sectional view of the interchangeable lens at the retracted end. [Figure 6] FIG. 2 is an explanatory diagram of the first zoom group. [Figure 7] FIG. 2 is a view of the first lens holding frame as seen from the optical axis direction. [Figure 8] FIG. 4 is an explanatory diagram of a first lens holding frame. [Figure 9] FIG. 4 is an explanatory diagram of a first lens holding frame. [Figure 10] FIG. 1 is a side view of the camera system hanging from a strap. [Figure 11] FIG. 2 is a front view of the camera system hanging from a strap. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same components, and redundant explanations will be omitted.

[0010] 1 is a perspective view of a camera system (imaging device) according to an embodiment of the present invention. The camera system includes an 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. Note that, although the configuration of the interchangeable lens 100 will be described in this embodiment, the present invention is also applicable to other optical devices such as an integrated lens camera.

[0011] 1(a) and 1(b) are views seen from the front side (subject side) and the back side (imaging surface side), respectively. In this embodiment, as shown in FIG. 1(a), the optical axis direction, which is the direction in which the optical axis of the imaging optical system housed in the interchangeable lens 100 extends (the direction along the optical axis), is defined as the X-axis direction, and directions perpendicular to this 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 also be collectively referred to as the Z / Y-axis direction. Furthermore, the rotation direction around the Z-axis will be defined as the pitch direction, and the rotation direction around the Y-axis will be defined as the yaw direction. The pitch direction and yaw direction (hereinafter collectively referred to as the pitch / yaw direction) are directions of rotation around two axes, the Z-axis and the Y-axis, which are perpendicular to each other.

[0012] A grip section 2 for a user to hold the camera body 1 in his / her hand is provided on the left side when viewed from the front side of the camera body 1 (the right side when viewed from the rear side).

[0013] A power operation unit 3 is located on the top surface of the camera body 1. When the user turns on the power operation unit 3 while the camera body 1 is in the power-off state, power begins to flow, the camera body 1 enters the power-on state, and a computer program such as a focus group origin detection process is executed, entering a shooting standby state. When the user turns off the power operation unit 3 while the camera body 1 is in the power-on state, the camera body 1 enters the power-off state.

[0014] The top surface of the camera body 1 is also provided with a mode dial 4, a release button 5, and an accessory shoe 6. The user can switch between shooting modes by rotating the mode dial 4. The shooting modes include a manual still image shooting mode, in which the user can freely set shooting conditions such as shutter speed and aperture value, an auto still image shooting mode, in which the appropriate exposure is automatically obtained, and a video shooting mode for shooting videos. The user can instruct shooting preparation operations such as autofocus and auto exposure control by half-pressing the release button 5, and can instruct shooting by fully pressing the button. Accessories (camera accessories) such as an external flash can be detachably attached to the accessory shoe 6.

[0015] The interchangeable lens 100 is equipped with a lens mount 102 that can be mechanically and electrically connected to a camera mount 7 provided on the camera body 1. The lens mount 102 and the camera mount 7, each of which has a circular ring shape, are made of metal and are detachable via a bayonet coupling (not shown). There are no restrictions on the combination of the interchangeable lens 100 and the camera body 1 as long as they use a common mount shape as a camera system.

[0016] The interchangeable lens 100 houses an imaging optical system that forms an image of a subject using light from the subject.

[0017] A zoom ring 103 that can be rotated around the optical axis by user operation is provided on the outer periphery of the interchangeable lens 100. When the user rotates the zoom ring 103, the zoom group that makes up the imaging optical system moves to a predetermined usage position that corresponds to the angle of the zoom ring 103, within a range from the wide-angle end to the telephoto end. This configuration allows the user to capture images at a desired angle of view. Furthermore, in this embodiment, a retractable end, where capture is further restricted, is provided after the zoom ring 103 is rotated from the telephoto end to the wide-angle end. The retractable end is the position where the interchangeable lens 100 is most retracted.

[0018] As shown in FIG. 1( b), the rear surface of the camera body 1 is provided with a rear operation unit 8 and a display unit 9. The rear operation unit 8 includes a plurality of buttons and dials assigned with various functions. When the camera body 1 is powered on and the still image or video shooting mode is set, the display unit 9 displays a through image of a subject formed on an image sensor (described later). The display unit 9 also displays shooting parameters indicating shooting conditions such as shutter speed and aperture value. The user can change the settings of the shooting parameters by operating the rear operation unit 8 while viewing the display. The rear operation unit 8 includes a playback button for instructing playback of a recorded captured image. When the user operates the playback button, the captured image is played back and displayed on the display unit 9. The display unit 9 may be a touch panel type having the same functions as the rear operation unit 8.

[0019] 2 is a block diagram showing the electrical and optical configuration of the camera system. The camera body 1 has 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 power operation unit 3, mode dial 4, release button 5, rear operation unit 8, and the touch panel function of the display unit 9.

[0020] In this embodiment, control of the camera system is performed by the camera control unit 12 provided in the camera body 1 and the lens control unit 104 provided in the interchangeable lens 100 working in cooperation with each other. Note that 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 the camera system is controlled by the two operating in cooperation with each other. The camera control unit 12 reads and executes a computer program stored in the storage unit 13. In this case, the camera control unit 12 communicates various control signals, data, and the like with the lens control unit 104 via a communication terminal of an electrical contact 105 provided in the lens mount 102. The electrical contact 105 includes a power terminal that supplies power from the power supply unit 10 to the interchangeable lens 100.

[0021] The imaging optical system of the interchangeable lens 100 has a zoom group 109 that is connected to the zoom operation ring 103 and moves in the optical axis direction to change the angle of view, and an aperture group 301 that performs a light amount adjustment operation. The imaging optical system also has a lens vibration reduction group 130 that includes a shift lens as an vibration reduction element and reduces image blur by moving (shifting) in the Z / Y axis directions orthogonal to the optical axis. The imaging optical system also has a focus group 160 that includes a focus lens that moves in the optical axis direction to adjust the focus.

[0022] The interchangeable lens 100 also has an aperture driver 302 that drives the aperture group 301 , an image stabilization driver 311 that moves the lens image stabilization group 130 , and a focus driver 601 that moves the focus group 160 .

[0023] The camera body 1 has a shutter unit 14, a shutter driver 15, an image sensor 16, an image processor 17, and a camera controller 12. The shutter unit 14 controls the amount of light exposed to the image sensor 16. The image sensor 16 photoelectrically converts the subject image formed by the imaging optical system and outputs an image signal. The image processor 17 performs various image processes on the image signal and then generates an image signal. The display 9 displays the image signal (through image) output from the image processor 17, displays the shooting parameters as described above, and plays back and displays shot images recorded in the memory unit 13 or a recording medium (not shown).

[0024] The camera control unit 12 controls the focus driving unit 601 in response to a shooting preparation operation (such as half-pressing the release button 5) on the operation unit 11. For example, when an autofocus operation is instructed, the focus detection unit 18 determines the focus state of the subject image formed on the image sensor 16 based on the image signal generated by the image processing unit 17, generates a focus signal, and sends it to the camera control unit 12. At the same time, the focus driving unit 601 sends information about the current position of the focus group 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 group 160, calculates a focus driving amount from the amount of deviation, and sends it to the lens control unit 104. The lens control unit 104 then moves the focus group 160 to a target position in the optical axis direction via the focus driving unit 601, thereby correcting the focus deviation of the subject image.

[0025] The focus driving unit 601 includes a focus motor that functions as an actuator and a photointerrupter that serves as a detector that detects the origin position of the focus group 160. Generally, a stepping motor, which is a type of actuator, is often used as the focus motor. Note that a DC motor with an encoder, an ultrasonic motor, a servo motor, or the like may also be used as the focus motor. Furthermore, while a photointerrupter directly receives light emitted from a light-emitting unit with a light-receiving unit, a photoreflector that receives light reflected from a reflective surface or a brush that comes into contact with a conductive pattern and electrically detects a signal may alternatively be used as the detector.

[0026] The camera control unit 12 controls the driving of the aperture group 301 and the shutter unit 14 via the aperture drive unit 302 and the shutter drive unit 15 in accordance with the setting values ​​of the aperture value and shutter speed received from the operation unit 11. For example, when an automatic exposure control operation is instructed, the camera control unit 12 receives a luminance signal generated by the image processing unit 17 and performs a photometric calculation. Based on the result of this photometric calculation, the camera control unit 12 controls the aperture drive unit 302 in accordance with a shooting 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 drive unit 15 and performs exposure processing by the image sensor 16.

[0027] The camera body 1 has a pitch shake detection unit 19 and a yaw shake detection unit 20 as shake detection means capable of detecting image shake due to a user's hand shake or the like. The pitch shake detection unit 19 and the yaw shake detection unit 20 detect image shake in the pitch direction and the yaw direction using an angular velocity sensor (vibration gyro) and an angular acceleration sensor, respectively, and output shake signals. The camera control unit 12 calculates the shift position of the lens vibration isolation group 130 in the Y-axis direction using the shake signal from the pitch shake detection unit 19. Similarly, the camera control unit 12 calculates the shift position of the lens vibration isolation group 130 in the Z-axis direction using the shake signal from the yaw shake detection unit 20. Then, the camera control unit 12 moves the lens vibration isolation group 130 to a target position in the Z-axis direction via the vibration isolation drive unit 311 in accordance with the calculated shift position in the pitch / yaw direction, thereby reducing image shake during exposure or when a through-image is displayed.

[0028] The interchangeable lens 100 has a zoom ring 103 for changing the angle of view of the imaging optical system, and a zoom detection unit 106 for detecting the angle of the zoom ring 103. The zoom detection unit 106 detects the angle of the zoom ring 103 operated by the user as an absolute value, and is configured using, for example, a resistive linear potentiometer. Information related to the angle of view detected by the zoom detection unit 106 is transmitted to the lens control unit 104 and reflected in various controls by the camera control unit 12. Some of this information is recorded together with the captured image in the storage unit 13 or a recording medium (not shown).

[0029] Below, we will explain the positional relationships of the main components of the interchangeable lens 100. Figures 3 to 5 are cross-sectional views on the XY plane including the optical axis. The center line shown here roughly coincides with the optical axis determined by the imaging optical system, and therefore will be referred to as the optical axis below.

[0030] Fig. 3 shows the wide-angle end on the shortest focal length side of the zoom, and Fig. 4 shows the telephoto end on the longest focal length side of the zoom. Fig. 5 shows the retracted end, where the overall length is the shortest in the optical axis direction. The retracted end in Fig. 5 is located further beyond the wide-angle end in Fig. 3, and by rotating the zoom operation ring 103 in one direction, the zoom position shifts sequentially from the retracted end in Fig. 5 to the wide-angle end in Fig. 3, and from the wide-angle end in Fig. 3 to the telephoto end in Fig. 4.

[0031] 3 and 4, the camera system is in a state where the imaging optical system is in a position where imaging is possible (image capture state). A state where imaging is possible means a state where the functions of the camera system can operate normally. In FIG. 5, the camera system is in a state where imaging is restricted (retracted state) where the imaging optical system is in a retracted position. A state where imaging is restricted means a state where some of the functions of the camera system do not operate normally. For example, in the retracted state, the act of taking a picture (for example, pressing the shutter to capture a subject) is possible, but the captured image may be out of focus, resulting in a partially or entirely blurred image.

[0032] As shown in FIGS. 3 and 4 , this embodiment employs a seven-group configuration as an example of an imaging optical system. The zoom group 109 moves to different predetermined usage positions at the wide-angle end and the telephoto end to guide light from a subject to the image sensor 16. The zoom group 109 includes a first zoom group 110, a second zoom group 120, a lens vibration reduction group 130 functioning as a third zoom group, a fourth zoom group 140, a fifth zoom group 150, a focus group 160 functioning as a sixth zoom group, and a seventh zoom group 170. The zoom group 109 may also include an aperture group 301. The imaging optical system is not limited to a seven-group configuration. For example, the lens vibration reduction group 130 and the focus group 160 may function as other zoom groups. Some lens groups may be fixed rather than movable.

[0033] The linear guide barrel 107 is a fixed component that is fixed to the lens mount 102 via the fixed barrel 101. Bayonet claws (not shown) are arranged at equal intervals on the outer peripheral surface of the linear guide barrel 107. A circumferential groove (not shown) is provided on the inner peripheral surface of the cam barrel 108. The cam barrel 108 is also connected to the zoom operation ring 103. When the user rotates the zoom operation ring 103, the bayonet claws engage with the circumferential groove, restricting the movement of the cam barrel 108 in the optical axis direction and allowing it to rotate about the optical axis.

[0034] The linear guide barrel 107 has linear guide grooves formed at equal intervals that restrict movement of the zoom group 109 in the rotational direction and guide linear movement in the optical axis direction. Cam grooves, each with a different angle in the rotational direction, are formed at equal intervals in the cam barrel 108 to correspond to the zoom group 109. Meanwhile, the zoom group 109 is provided with a plurality of rollers, each of which fits into a corresponding linear guide groove and cam groove. When the user rotates the zoom operation ring 103, the cam barrel 108 rotates, and the rollers, due to their engagement with the linear guide grooves and cam grooves, move the zoom group 109 forward and backward in the optical axis direction while restricting movement in the rotational direction.

[0035] In this embodiment, the interchangeable lens 100 has a retractable mechanism, which allows the zoom group 109 to be retracted further to the rear side (image capture surface side) when not taking pictures. This reduces the overall length of the interchangeable lens 100, making it possible to improve the portability of the interchangeable lens 100 and the camera body 1.

[0036] At the wide-angle end in FIG. 3, the distance between the second zoom group 120 and the lens vibration reduction group 130, which functions as the third zoom group, is wide, while at the telephoto end in FIG. 4, the distance between the first zoom group 110 and the second zoom group 120 is wide. The retractable mechanism narrows the distance between these groups, moves them to a retracted position close to each other, and shortens the overall length in the optical axis direction. At the retracted end in FIG. 5 when not shooting, the zoom groups 109 have moved to a retracted position close to each other. For example, when the user rotates the zoom operation ring 103 from the state in FIG. 5 to the wide-angle end, the zoom groups 109 extend to the front side (subject side) and move to a predetermined usage position, thereby achieving the state in which shooting is possible as shown in FIG. 3.

[0037] The shape of the first zoom group 110 will now be described. Figure 6 is an explanatory diagram of the first zoom group 110. Figure 6(a) is a cross-sectional view of the first zoom group 110. Figure 6(b) is an enlarged view of a tip portion A of the first zoom group 110 shown in Figure 6(a).

[0038] The first zoom group 110 includes a first lens 111, a first lens holding frame (holding member) 112, and a name ring (not shown). The first lens holding frame 112 includes a lens holding portion (holding portion) 113a that holds the first lens 111, and an outer peripheral portion 113b that is integrally molded with the lens holding portion 113a and is disposed on the outer periphery of the lens holding portion 113a. An outer peripheral portion 114 that forms the outer appearance is disposed on the outer periphery of the first lens holding frame 112. In this embodiment, the lens holding portion 113a holds the first lens 111 near the center when viewed from the optical axis direction. The lens holding portion 113a holds the first lens 111 by caulking. Specifically, in this embodiment, the lens holding portion 113a has a caulking claw shape, and the first lens 111 is held to the first lens holding frame 112 by thermal caulking. Note that the shape and method of holding the first lens 111 to the first lens holding frame 112 are not important as long as the first lens 111 can be held in the first lens holding frame 112.

[0039] When viewed from the optical axis direction, the lens holding portion 113a is provided with a plurality of through grooves 115 along the circumferential direction on the outer circumferential side of a plurality of contact portions where the lens holding portion 113a contacts the first lens 113a. The plurality of through grooves 115 have an arc shape.

[0040] An accessory mounting portion (mounting portion) 118 for mounting an accessory is provided on a part of the outer periphery of the outer peripheral portion 113b. The accessory mounting portion 118 is located on the outermost periphery of the first lens holding frame 112. The accessory mounting portion 118 is also located outside the lens holding portion 113a in the optical axis direction. In other words, the accessory mounting portion 118 is provided at a position that does not overlap with the lens holding portion 113a in the optical axis direction.

[0041] FIG. 7 is a view of the first lens holder frame 112 as viewed from the optical axis direction. As described above, the first lens holder frame 112 is provided with a plurality of through grooves 115. In this embodiment, the plurality of through grooves 115 consists of four through grooves 115a, 115b, 115c, and 115d. The through grooves 115a, 115b, 115c, and 115d are provided at equal intervals along the circumferential direction and, in this embodiment, are provided on the lower, right, upper, and left sides, respectively, in the normal camera posture (the posture when the camera system is used in the state shown in FIG. 1). Of the circumferential ranges 115A, 115B, 115C, and 115D of the through grooves 115a, 115b, 115c, and 115d, the circumferential range 115A of the lowermost through groove 115a is the widest. The connecting portions 119a and 119b connect the lens holder 113a and the outer circumferential portion 113b.

[0042] 8 and 9 are explanatory diagrams of the first lens retaining frame 112. FIG. 8(a) is a perspective view of the first lens retaining frame 112 when viewed from above with the camera in the normal position. FIG. 8(b) and FIG. 8(c) are enlarged views of areas B and C in FIG. 8(a), respectively. FIG. 9 is a perspective view of the first lens retaining frame 112 when viewed from below with the camera in the normal position. FIG. 9(b) is an enlarged view of area D in FIG. 9(a).

[0043] The first lens holding frame 112 has lens receiving surfaces 117a, 117b, and 117c on the inner diameter side of the lens holding portion 113a. The lens receiving surfaces 117a, 117b, and 117c come into contact with the first lens 111 in the optical axis direction. Furthermore, the first lens holding frame 112 has lens fitting portions 116a and 116b on the lower side and lens fitting portion 116c on the upper side on the inner diameter side of the lens holding portion 113a when the camera is in the normal position. The lens fitting portions 116a, 116b, and 116c fit into parts of the outer peripheral surface of the first lens 111. When viewed from the optical axis direction when the camera is in the normal position, the lens fitting portions 116a, 116b, and 116c are arranged in the same phase (at the same position in the circumferential direction) as the lens receiving surfaces 117a, 117b, and 117c, respectively. In this embodiment, the contact portion that comes into contact with the first lens 111 is configured by the lens fitting portion and the lens receiving surface that is arranged in the same phase. Note that the "same phase" does not only mean the exact same phase, but also includes the case where the first lens 111 is in substantially the same phase (approximately the same phase).

[0044] When viewed from the optical axis direction with the camera in the normal position, on the lower side, as shown in FIGS. 7 and 8, the lens fitting portion 116a and the lens receiving surface 117a are arranged in the same phase (including approximately the same phase) as the connecting portion 119a. Also, the lens fitting portion 116b and the lens receiving surface 117b are arranged in the same phase (including approximately the same phase) as the connecting portion 119b. That is, the lens fitting portion 116a and the lens receiving surface 117a, as well as the lens fitting portion 116b and the lens receiving surface 117b, are arranged in positions in the circumferential direction so as not to overlap with the through grooves. In this embodiment, the lens fitting portion 116a and the lens receiving surface 117a form a first contact portion. Similarly, the lens fitting portion 116b and the lens receiving surface 117b form a first contact portion.

[0045] Furthermore, when viewed from the optical axis direction with the camera in the normal position, on the upper side, as shown in Figures 7 and 9, the lens fitting portion 116c and the lens receiving surface 117c are arranged at a position that overlaps with the through groove 115c in the circumferential direction. In this embodiment, the lens fitting portion 116c and the lens receiving surface 117c form a second contact portion. In this embodiment, the lens fitting portion 116c and the lens receiving surface 117c are arranged at the center of the through groove 115c. Note that the term "center" does not only mean the exact center, but also includes the case where the position is substantially at the center (approximately the center).

[0046] When viewed from the optical axis direction with the camera in the normal position, a through groove 115a is formed on the underside of the first lens retaining frame 112, with connecting portions 119a and 119b provided on both ends of the through groove 115a. Furthermore, as described above, the lens fitting portion 116a and the lens receiving surface 117a are arranged in the same phase as the connecting portion 119a, and the lens fitting portion 116b and the lens receiving surface 117b are arranged in the same phase as the connecting portion 119b. With this configuration, the first lens 111 does not come into contact with the first lens retaining frame 112 within the circumferential range 115A of the through groove 115a.

[0047] When viewed from the optical axis direction with the camera in the normal position, the lens fitting 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.

[0048] In this embodiment, three lens fitting portions and three lens receiving surfaces are provided at approximately equal intervals, so that the first lens 111 is held in the first lens holding frame 112 in a well-balanced manner.

[0049] The following describes the impacts that may be applied to the interchangeable lens 100. Fig. 10 is a side view of the camera system in a state where it is hung by the strap 21. Fig. 11 is a front view of the camera system in a state where it is hung by the strap 21.

[0050] If the camera system collides with the ground 30 or the like while suspended by the strap 21, the interchangeable lens 100 will fall to the ground 30 in the direction of arrow A due to the positional relationship of the strap 21 with respect to the camera body 1. As described above, the accessory mounting portion 118 is provided on part of the outermost periphery of the first lens holding frame 112, and is located outside the lens holding portion 113a in the optical axis direction. Therefore, the interchangeable lens 100 falls from the accessory mounting portion 118, and is subjected to the greatest impact from the circumferential range 115A.

[0051] Furthermore, if the camera system collides with a wall 31 or the like while suspended by the strap 21, the interchangeable lens 100 will collide with the wall 31 along the directions of arrows B, C, and D. As a result, the interchangeable lens 100 will be subjected to impacts from circumferential ranges 115B, 115C, and 115D.

[0052] In this embodiment, as described above, when viewed from the optical axis direction with the camera in the normal position, first lens 111 does not contact first lens retaining frame 112 within circumferential range 115A of through groove 115a provided on the lower side. Furthermore, the provision of through groove 115a causes elastic deformation of first lens retaining frame 112. Therefore, even if the camera system suspended by strap 21 collides with ground 30 or the like and receives a strong impact, the impact is less likely to be transmitted to first lens 111, making it possible to reduce the possibility of first lens 111 being damaged.

[0053] Furthermore, as described above, when viewed from the optical axis direction with the camera in the normal position, through grooves 115b, 115c, and 115d provided on the upper and left and right sides are provided within circumferential ranges 115B, 115C, and 115D, respectively, and first lens holding frame 112 is configured to be elastically deformable. Therefore, even if the camera system collides with wall 31 or the like while suspended by strap 21 and an impact is applied, the impact is unlikely to be transmitted to first lens 111, making it possible to reduce the possibility of first lens 111 being damaged.

[0054] Furthermore, since there is no need to add components for absorbing impact, it is possible to reduce the number of components and make the outermost diameter of the interchangeable lens 100 smaller.

[0055] The disclosure of this embodiment includes the following configuration. (Configuration 1) a holder for holding the lens; an outer peripheral portion integrally molded with the holding portion and disposed on the outer periphery of the holding portion; A holding member characterized in that, when viewed from the optical axis direction, the holding portion has multiple through grooves formed along the circumferential direction, outer circumferentially of multiple contact portions that contact the lens. (Configuration 2) 2. The holding member according to claim 1, wherein each of the plurality of through grooves has an arc shape. (Configuration 3) the plurality of contact portions include first contact portions arranged at positions that do not overlap with the through grooves in the circumferential direction, and second contact portions arranged at positions that overlap with the through grooves in the circumferential direction, 3. The holding member according to claim 1, wherein when the holding member is in a normal position, the first contact portion is disposed below the second contact portion. (Configuration 4) The holding member according to configuration 3, wherein the second contact portion is disposed so as to be positioned at the center of the through groove in the circumferential direction. (Configuration 5) The holding member according to configuration 3 or 4, wherein each of the plurality of contact portions comprises a fitting portion that fits into a part of the outer peripheral surface of the lens and a receiving surface that contacts the lens in the optical axis direction. (Configuration 6) The plurality of through grooves include four through grooves formed at equal intervals along the circumferential direction, A holding member according to any one of configurations 1 to 5, wherein when the holding member is in a normal position, the through groove located at the lowest side has the longest length in the circumferential direction. (Configuration 7) 7. The holding member according to any one of configurations 1 to 6, wherein the holding portion holds the lens by caulking. (Configuration 8) The holding member according to any one of configurations 1 to 7, wherein a mounting portion for mounting an accessory is provided on a part of the outer periphery of the outer periphery. (Configuration 9) 9. The holding member according to configuration 8, wherein the attachment portion is provided at a position that does not overlap with the holding portion in the optical axis direction. (Configuration 10) The holding member according to configuration 8 or 9, wherein the attachment portion is located on the outermost side. (Configuration 11) A holding member according to any one of configurations 1 to 10; A lens barrel comprising at least one lens. (Configuration 12) 12. The lens barrel according to claim 11, wherein the lens held by the holding member is disposed closest to the subject in the optical axis direction. (Configuration 13) the lens barrel according to aspect 11 or 12; An imaging device comprising: an imaging element.

[0056] 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 gist of the present invention. [Explanation of symbols]

[0057] 111 First Lens (Lens) 112 First lens holding frame (holding member) 113a Lens holding part (holding part) 113b Outer periphery 115 Through groove 116a, 116b, 116c Lens fitting portion (contact portion) 117a, 117b, 117c Lens receiving surface (contact portion)

Claims

1. a holder for holding the lens; an outer peripheral portion integrally molded with the holding portion and disposed on the outer periphery of the holding portion; A holding member characterized in that, when viewed from the optical axis direction, the holding portion has multiple through grooves formed along the circumferential direction, outer circumferentially of multiple contact portions that contact the lens.

2. The holding member according to claim 1 , wherein each of the plurality of through grooves has an arc shape.

3. the plurality of contact portions include first contact portions arranged at positions that do not overlap with the through grooves in the circumferential direction, and second contact portions arranged at positions that overlap with the through grooves in the circumferential direction, The holding member according to claim 1 or 2, wherein the first contact portion is disposed lower than the second contact portion when the holding member is in a normal posture.

4. The holding member according to claim 3 , wherein the second contact portion is disposed so as to be positioned at a center of the through groove in the circumferential direction.

5. 4. The holding member according to claim 3, wherein each of the plurality of contact portions includes a fitting portion that fits onto a part of the outer peripheral surface of the lens, and a receiving surface that contacts the lens in the optical axis direction.

6. The plurality of through grooves include four through grooves formed at equal intervals along the circumferential direction, 3. The holding member according to claim 1, wherein when the holding member is in a normal position, the through groove located at the lowest side has the longest length in the circumferential direction.

7. 3. The holding member according to claim 1, wherein the holding portion holds the lens by caulking.

8. 3. The holding member according to claim 1, wherein a mounting portion for mounting an accessory is provided on a part of the outer periphery of the outer periphery.

9. 9. The holding member according to claim 8, wherein the attachment portion is provided at a position that does not overlap with the holding portion in the optical axis direction.

10. The holding member according to claim 8 , wherein the attachment portion is located on the outermost side.

11. The holding member according to claim 1 or 2; A lens barrel comprising at least one lens.

12. 12. The lens barrel according to claim 11, wherein the lens held by the holding member is disposed closest to the subject in the optical axis direction.

13. The lens barrel according to claim 11; An imaging device comprising: an imaging element.

Images