Lens apparatus and image pickup apparatus

Abstract

To provide a lens device capable of achieving both reduction of impact and miniaturization of a unit with a simple structure.SOLUTION: A lens device comprising: a fixed frame that holds a fixed lens; a movable frame that holds a movable lens and moves in a direction orthogonal to an optical axis with respect to the fixed frame; A cylindrical portion formed to protrude from one of the fixed frame and the movable frame in a direction along the optical axis, a first contact portion with which the other of the fixed frame and the movable frame and the cylindrical portion come into contact when the movable frame moves in an orthogonal direction, and a second contact portion with which a buffer material disposed on the other of the fixed frame and the movable frame and the cylindrical portion comes into contact when the movable frame moves in an orthogonal plane, wherein the buffer material, the first contact portion, and the second contact portion are disposed on a plane perpendicular to the optical axis.SELECTED DRAWING: Figure 7

Description

[Technical Field]

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

[0002] In recent years, many optical devices, such as digital cameras, video cameras, and interchangeable lenses, have been equipped with image stabilization units with lens groups that shift within a plane perpendicular to the optical axis to reduce image blur during handheld shooting. The image stabilization unit is comprised of a fixed frame and a movable frame that shifts relative to the fixed frame, and is provided with a contact portion that regulates the amount of shift of the movable frame relative to the fixed frame. However, when the movable frame collides with the contact portion, the impact sound can be unpleasant to the user and may lead to damage to various components or degradation of optical performance.

[0003] There is also a demand for improved portability when carried around, and in order to reduce the size of optical devices, there is a demand for miniaturization of image stabilization units that shift within a plane perpendicular to the optical axis.

[0004] Patent document 1 discloses an example of a collision prevention measure for a shake correction unit, in which a buffer member is placed on either the fixed frame or the movable frame to reduce the impact when the movable frame collides with the contact portion. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-330154 Summary of the Invention [Problem to be solved by the invention]

[0006] However, compared to a configuration in which optical elements are held only on the movable frame side, a configuration in which optical elements are held also on the fixed frame side requires the provision of a structure for holding optical elements on the fixed frame side, which means that the space for arranging other components is pushed further out toward the outer diameter. Furthermore, a shake correction unit has many components, including not only the holding structure for each optical element but also the actuator that shifts the movable frame and the sensor that detects the amount of shift, so adding a buffer member to this also poses the issue of increasing the size of the unit. Patent Document 1 does not disclose the optimal arrangement of each component and the buffer member.

[0007] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a lens device that has a simple structure and is capable of both absorbing impact and reducing the size of the unit. [Means for solving the problem]

[0008] In order to achieve the above object, one aspect of the present invention provides a lens device comprising: a fixed frame that holds a fixed lens; a movable frame that holds a movable lens and moves relative to the fixed frame in a direction perpendicular to the optical axis; a circular cylindrical portion formed so as to protrude from either the fixed frame or the movable frame in a direction along the optical axis; a first abutment portion where the other of the fixed frame or the movable frame abuts against the cylindrical portion when the movable frame moves in the perpendicular direction; and a second abutment portion where a cushioning material arranged between the other of the fixed frame or the movable frame and the cylindrical portion abuts when the movable frame moves in the perpendicular plane, and the cushioning material, the first abutment portion, and the second abutment portion are arranged in a plane perpendicular to the optical axis. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a lens device that has a simple structure and is capable of both absorbing impact and reducing the size of the unit. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of an imaging device having an interchangeable lens and a camera body according to a first embodiment. [Figure 2] 1 is a block diagram showing the configuration of an imaging apparatus according to a first embodiment. [Figure 3] FIG. 2 is a cross-sectional view showing the interchangeable lens of the first embodiment at the wide-angle end during shooting. [Figure 4] FIG. 2 is a cross-sectional view showing the interchangeable lens of the first embodiment at the telephoto end during shooting. [Figure 5] 1 is a cross-sectional view showing the interchangeable lens of Embodiment 1 in a retracted state when not taking pictures. FIG. [Figure 6] FIG. 2 is an exploded perspective view of the shake correction unit of the first embodiment. [Figure 7] FIG. 2 is a cross-sectional view of the shake correction unit of the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals indicate the same or corresponding parts throughout the drawings. Note that, although an interchangeable lens, which is an example of an optical device, will be described in this embodiment, various modifications and changes can be made to other optical devices, such as an integrated lens camera, within the scope of the present invention.

[0012] <Embodiment 1> Fig. 1 is a diagram showing the appearance of an imaging device 1000 having an interchangeable lens 101 and a camera body 1 according to this embodiment. Specifically, it shows the appearance of the interchangeable lens 101 included in the imaging device 1000 according to this embodiment, and a digital camera (hereinafter referred to as the camera body) 1 to which the interchangeable lens 101 is detachably attached. Fig. 1(A) is a perspective view showing the front side (subject side) of the imaging device 1000 having the interchangeable lens 101 and the camera body 1. Fig. 1(B) is a perspective view showing the back side (imaging surface side) of the imaging device 1000 having the interchangeable lens 101 and the camera body 1.

[0013] In this embodiment, as shown in FIG. 1A, the direction in which the optical axis OA of the imaging optical system housed in the interchangeable lens 101 extends is defined as the X-axis direction (hereinafter referred to as the optical axis OA direction), and the 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 the rotation directions around two axes, the Z axis and the Y axis, which are perpendicular to each other.

[0014] The camera body 1 shown in FIG. 1 has a grip section 2 on the left side when viewed from the front (right side when viewed from the back) that allows the user to hold the camera body 1 with their hand. A power operation section 3 is also located on the top surface of the camera body 1. When the user turns on the power operation section 3 while the camera body 1 is in the power-off state, power is supplied to the camera body 1, which then powers on the camera body 1, executes a computer program for processing the origin detection of the focus group, and enters a shooting standby state. When the user turns off the power operation section 3 while the camera body 1 is in the power-on state, the camera body 1 powers off.

[0015] Furthermore, the top surface of the camera body 1 is 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 also 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 it. An accessory (camera accessory) such as an external flash or other lighting or light-emitting device can be detachably attached to the accessory shoe 6.

[0016] The interchangeable lens 101 has a lens mount 102 that can be mechanically and electrically connected to a camera mount 7 provided on the camera body 1. The annular lens mount 102 and the camera mount 7 are detachable via a bayonet connection (not shown). There are no restrictions on the combination of the interchangeable lens 101 and the camera body 1 as long as they share a common mount shape as a camera system.

[0017] The interchangeable lens 101 houses an imaging optical system that forms an image of a subject by focusing light from the subject. A zoom ring (operating member) 103 that can be rotated around an optical axis OA by a user is provided on the outer periphery of the interchangeable lens 101. When the user rotates the zoom ring 103, the zoom groups that make up the imaging optical system move to predetermined usage positions that correspond to the angle of the zoom ring 103, within a range from the wide-angle end to the telephoto end. This allows the user to capture images at a desired angle of view. Furthermore, as will be described in detail later, in the present invention, a retractable end, at which capturing 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 at which the interchangeable lens 101 is most retracted (the position where it is pulled toward the imaging surface).

[0018] As shown in FIG. 1B, 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 functions as a display (monitor) that displays a through image of a subject captured by 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 an operable touch panel type that has the same functions as the rear operation unit 8.

[0019] 2 is a block diagram showing the electrical and optical configuration of the interchangeable lens 101 and camera body 1 in this embodiment. The camera body 1 has a power supply unit 10 that supplies power to the camera body 1 and interchangeable lens 101, 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. In this embodiment, the camera body 1 and interchangeable lens 101 as an entire system are controlled by a camera control unit 12 provided in the camera body 1 and a lens control unit 104 provided in the interchangeable lens 101, which communicate with each other.

[0020] 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 101, and by linking the two together they control the entire system of the camera body 1 and the interchangeable lens 101. That is, each of the camera control unit 12 and the lens control unit 104 is configured with at least one computer having a CPU (processor).

[0021] The camera control unit 12 reads and executes a computer program stored in the storage unit 13. In doing so, 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 on the lens mount 102. The electrical contact 105 includes a power terminal that supplies power from the power supply unit 10 described above to the interchangeable lens 101.

[0022] The storage unit 13 is a storage medium configured with a volatile memory such as RAM (Random Access Memory) or a non-volatile memory such as ROM (Read Only Memory). The storage unit 13 stores various information related to the entire system of the camera body 1 and the interchangeable lens 101. For example, the storage unit 13 stores images captured by the image sensor 16, settings such as various parameters and ISO sensitivity, shooting modes, and various correction data. The storage unit 13 also stores control programs, variables, constants, and the like that control the overall operation of the imaging device 1000. The storage unit 13 may also have a secondary storage device (not shown) as a storage medium separate from the storage unit 13, and the secondary storage device may be included in the storage unit 13. The secondary storage device is a rewritable storage device (storage medium) such as a hard disk or flash memory, and is configured to store data received via the electrical contacts 105 in the same manner as described above.

[0023] The imaging optical system of the interchangeable lens 101 includes a zoom group 110 that is connected to the zoom operation ring 103 and moves in the direction of the optical axis OA (a direction along the optical axis OA) to change the angle of view, and an aperture group 301 that adjusts the amount of light. The imaging optical system also includes a shake correction unit 400 that includes a movable lens 113b that shifts as an anti-vibration element, and a third zoom group 113 that is composed of a third lens 113a that is fixed within the group. The movable lens 113b reduces image blur by moving (shifting) in the Z-axis and Y-axis directions that are orthogonal to the optical axis OA. Details of the shake correction unit 400 will be described later with reference to FIGS. 6 and 7.

[0024] The imaging optical system further includes a focus group 116 including a focus lens that moves in the direction of the optical axis OA to adjust the focus. The interchangeable lens 101 also includes an aperture driver 302 that drives the aperture group 301, an anti-shake driver 410 that moves the movable lens 113b, and a focus driver 601 that moves the focus group 116. The third zoom group 113 may be composed of only the image stabilization unit 400.

[0025] The camera body 1 has a shutter unit 14, a shutter driver 15, an image sensor 16, an image processor 17, and the aforementioned camera controller 12. The shutter unit 14 controls the amount of light that is formed by the imaging optical system in the interchangeable lens 101 and that is exposed at 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 captured images stored in the memory unit 13 or a recording medium (secondary storage device) not shown.

[0026] 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 by 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 116 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 116, 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 116 to a target position in the direction of the optical axis OA via the focus driving unit 601, thereby correcting the focus deviation of the subject image.

[0027] The focus drive unit 601 includes a focus motor that functions as an actuator and a photointerrupter that detects the origin position of the focus group 116. 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 contacts a conductive pattern and electrically detects a signal may alternatively be used as the detection unit.

[0028] 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 an exposure process by the image sensor 16.

[0029] 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 caused by the user's hand shake, etc. The pitch shake detection unit 19 and the yaw shake detection unit 20 each use an angular velocity sensor (vibration gyro) and an angular acceleration sensor to detect image shake in the pitch direction (direction of rotation around the Z axis) and the yaw direction (direction of rotation around the Y axis), and output a shake signal.

[0030] The camera control unit 12 calculates the shift position of the movable lens 113b 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 movable lens 113b in the Z-axis direction using the shake signal from the yaw shake detection unit 20. Then, the camera control unit 12 moves the movable lens 113b to a target position in the Z / Y-axis direction via the vibration isolation drive unit 410 in accordance with the calculated shift position in the pitch / yaw direction, thereby reducing image shake during exposure and display of a through image.

[0031] The interchangeable lens 101 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 about 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 described above. Meanwhile, some of this information is recorded together with the captured image in the storage unit 13 or a recording medium (not shown).

[0032] Next, the positional relationships of the main components of the interchangeable lens 101 will be described using Figures 3, 4, and 5. Figures 3, 4, and 5 are cross-sectional views on the XY plane including the optical axis OA. The center line shown in Figures 3, 4, and 5 substantially coincides with the optical axis OA determined by the imaging optical system, and therefore will be described below as being synonymous with the optical axis OA. Figure 3 shows the wide-angle end on the short focal length side of the zoom, and Figure 4 shows the telephoto end on the long focal length side of the zoom.

[0033] 3 and 4 both show a state in which the imaging optical system of the interchangeable lens 101 is in a position where imaging is possible (a state in which imaging is possible). On the other hand, Fig. 5 shows a state in which the imaging optical system of the interchangeable lens 101 is in a stored state (a state in a retracted position) when not taking images. Fig. 5 also shows the retracted end where the overall length in the direction of the optical axis OA is shortened to the shortest.

[0034] The retracted end shown in FIG. 5 is located further beyond the wide-angle end shown in FIG. 3 (further toward the image plane in the direction of the optical axis OA). Rotating the zoom ring 103 in one direction sequentially shifts the zoom from the retracted end shown in FIG. 5 to the wide-angle end shown in FIG. 3, and then from the wide-angle end shown in FIG. 3 to the telephoto end shown in FIG. 4. In this embodiment, a state in which the imaging optical system is ready for shooting is referred to as a shooting state, and a state in which the imaging optical system is in a retracted position is referred to as a retracted state. Note that a shooting ready state means that the camera functions, including the camera body 1 and the interchangeable lens 101, can always operate normally. Restricted shooting means that some of the camera functions, including the camera body 1 and the interchangeable lens 101, do not operate normally. For example, when the imaging optical system is in the retracted position, shooting (e.g., pressing the shutter to capture a subject) is possible, but the captured image may be blurred in whole or in part due to factors such as being out of focus.

[0035] As shown in FIGS. 3 and 4 , the interchangeable lens 101 of this embodiment employs a seven-group configuration as an example of an imaging optical system. The zoom groups 110 move to different predetermined usage positions at the wide-angle end and the telephoto end, respectively, and form an image of light from a subject on the image sensor 16. The zoom groups 110 are composed of a first zoom group 111, a second zoom group 112, an aperture group 301, a third zoom group 113, a fourth zoom group 114, a fifth zoom group 115, a focus group 116 functioning as a sixth zoom group, and a seventh zoom group 117. Note that the present invention does not limit the configuration of the imaging optical system. For example, the third zoom group 113 or the focus group 116 may function as another zoom group. Furthermore, some lens groups may be fixed rather than movable.

[0036] The linear guide barrel 107 is a fixed component that is fixed to the lens mount 102 via a fixed barrel 109. Bayonet claws (not shown) are arranged at equal intervals on the outer peripheral surface of the linear guide barrel 107. Meanwhile, a circumferential groove (not shown) is provided on the inner peripheral surface of the cam barrel 108. Furthermore, the cam barrel 108 is 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 direction of the optical axis OA and allowing it to rotate about the optical axis OA.

[0037] Furthermore, linear guide grooves that restrict movement of the zoom group 110 in the rotational direction and guide linear movement in the direction of the optical axis OA are formed at equal intervals in the linear guide barrel 107. Cam grooves that correspond to the zoom group 110 and have trajectories at different angles in the rotational direction are also formed at equal intervals in the cam barrel 108. Meanwhile, the zoom group 110 is provided with multiple 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 110 forward and backward in the direction of the optical axis OA while restricting movement in the rotational direction.

[0038] The interchangeable lens 101 of this embodiment has a retractable mechanism that allows the zoom group 110 to be retracted further toward the rear side (image capture surface side) when not taking pictures. At the wide-angle end shown in Fig. 3, the distance between the second zoom group 112 and the third zoom group 113 is wide, and at the telephoto end shown in Fig. 4, the distance between the first zoom group 111 and the second zoom group 112 is wide. The retractable mechanism narrows these distances and moves them to retracted positions where they are close to each other, thereby shortening the overall length in the direction of the optical axis OA.

[0039] As shown in Fig. 5, at the retracted end when not taking pictures, the zoom groups 110 move to a retracted position where they are close to each other. This shortens the overall length of the interchangeable lens 101, thereby improving the portability of the interchangeable lens 101 and the camera body 1. From this state, for example, when the user rotates the zoom operation ring 103 to the wide-angle end, the zoom groups 110 extend to the front side (subject side) and move to a predetermined use position, thereby reaching the state where photography is possible, as shown in Fig. 3. Note that this type of retractable mechanism is a technology that has been adopted in many optical devices (lens devices, etc.), so a detailed description will be omitted.

[0040] 6 is an exploded perspective view of the shake correction unit 400 provided in the interchangeable lens 101 of this embodiment. The configuration of the shake correction unit 400 provided in the interchangeable lens 101 of this embodiment will be described in detail below with reference to FIG.

[0041] The image stabilization unit 400 is configured to include a movable lens 113b that is movable in the Z / Y-axis directions orthogonal to the optical axis OA, and a fixed lens 113c that is relatively fixed within the third zoom group 113. In this embodiment, the image stabilization unit 400 is configured with components (members) other than the movable rollers 405 and fastening screws 406 in the configuration shown in FIG. 6. Specifically, the image stabilization unit 400 includes the movable lens 113b, the fixed lens 113c, a movable frame 401, a fixed frame 402, a buffer material 403, a biasing spring 404, a drive magnet 411, and a yoke 412. The image stabilization unit 400 further includes a drive coil 413, a magnetic shield 414, a flexible substrate 415, a position sensor 416, and a sensor magnet 417.

[0042] The movable lens 113b is held by a movable frame 401. The fixed lens 113c is held by a fixed frame 402. The movable lens 113b is held by the movable frame 401 and is held movably within a plane perpendicular to the optical axis OA relative to the fixed frame 402 that holds the fixed lens 113c via a plurality of rolling balls (not shown). That is, the movable frame 401 holds the movable lens 113b and is configured to be movable within a plane perpendicular to the optical axis relative to the fixed frame 402. The movable frame 401 is also biased in the direction of the optical axis OA relative to the fixed frame 402 by a plurality of biasing springs 404. Because the movable frame 401 is movable within a plane perpendicular to the optical axis relative to the fixed frame 402, the movable frame 401 may collide with the fixed frame 402.

[0043] To mitigate the impact of this collision, buffer material 403 is provided between both parts (movable frame 401 and fixed frame 402) in the direction of the optical axis OA. This buffer material 403 causes the movable frame 401 to butt into one of the parts before it directly butts into the fixed frame 402. This makes it possible to prevent damage caused by the collision between the two parts, performance degradation due to changes in lens position, and worsening collision noise.

[0044] Three movable rollers 405 are provided at equally spaced intervals on the outer peripheral surface of the fixed frame 402. As described above, the movable rollers 405 are fitted into the corresponding linear guide grooves and cam grooves. When zooming, for example, from the wide-angle end to the telephoto end, the cam barrel 108 rotates, and the fixed frame 402 moves linearly in the direction of the optical axis OA, integrated with other components as the third zoom group 113. In the configuration of this embodiment, the movable rollers 405 are fastened to the fixed frame 402 with fastening screws 406; however, for example, the fixed frame 402 and the movable rollers 405 may be molded integrally. In that case, the movable rollers 405 may also be included in the configuration of the shake correction unit 400.

[0045] A voice coil motor (VCM), for example, is used as the vibration isolation driving unit 410 that drives the movable frame 401. The actuator that functions as the driving means used in this embodiment is made up of a driving magnet 411, a yoke 412, a driving coil 413, and a magnetic shield 414.

[0046] The drive coil 413 is fixed to the fixed frame 402 so as to face the movable frame 401 in the direction of the optical axis OA. The drive magnet 411 is provided on the movable frame 401 at a position overlapping with the drive coil 413 when viewed from the direction of the optical axis OA. The yoke 412 is formed into a plate shape from a ferromagnetic material such as an iron-based metal, and is provided on the movable frame 401 on the opposite side of the drive magnet 411 from the drive coil 413 in the direction of the optical axis OA, at a position overlapping with the drive magnet 411 when viewed from the direction of the optical axis OA.

[0047] In this embodiment, two sets of actuators with the same configuration are used and arranged so that driving forces are generated in two directions, the Z-axis and Y-axis directions perpendicular to the optical axis OA. By combining the driving forces of the two actuators with different directions, the movable frame 401 can be driven in any direction within a plane perpendicular to the optical axis OA. In this embodiment, a magnetic shield 414 is provided to reduce electromagnetic noise generated by the actuators, but it may be removed from the configuration depending on the degree of influence of electromagnetic noise. Alternatively, it may be arranged at a position away from the fixed frame 402.

[0048] A position sensor 416, which functions as a position detection unit, is mounted on the flexible substrate 415. In this embodiment, a magnetic sensor such as a Hall element is used as the position sensor 416. The position sensor 416 is provided on a sensor magnet 417 provided on the movable frame 401, and on the fixed frame 402 at a position facing the sensor magnet 417 in the direction of the optical axis OA. The position sensor 416 detects changes in the magnetic field caused by the movement of the sensor magnet 417. To detect the position of the movable frame 401, two pairs of position sensors 416 and sensor magnets 417 are used, similar to the actuator, and each position sensor 416 detects position information in the Z-axis and Y-axis directions perpendicular to the optical axis OA. By combining the two pieces of position information in different directions, the position of the movable frame 401 can be calculated in a plane perpendicular to the optical axis. This makes it possible to detect the position of the movable frame 401.

[0049] Next, the positional relationship of the components of the shake correction unit 400 will be described with reference to Fig. 7. Fig. 7 is an example of a cross-sectional view of part of the configuration of the shake correction unit 400 in this embodiment, viewed from a direction perpendicular to the optical axis. Fig. 7(A) is a cross-sectional view of part of the shake correction unit 400, viewed from a direction perpendicular to the optical axis, and Fig. 7(B) is an enlarged view of the range enclosed by the dotted line in Fig. 7(A).

[0050] The movable frame 401 of this embodiment has a cylindrical portion 401a. Although not shown, the cylindrical portion 401a is a portion of the movable frame 401 formed in an annular shape. Here, as shown in FIG. 7(A), the cylindrical portion 401a is formed so as to protrude (extend) in the optical axis OA direction from the surface of the movable frame 401 on the imaging surface side toward the fixed frame 402 side. That is, the cylindrical portion 401a is formed so as to extend in the optical axis OA direction from the first surface 401b of the movable frame 401 toward the surface 402d of the fixed frame 402 on the subject side. Note that the positional relationship of the first surface 401b shown in FIG. 7 is an example, and the first surface 401b is the surface on the imaging surface side of the movable frame 401 that faces the surface of the fixed frame 402 on the subject side in the optical axis OA direction. That is, the first surface 401b of the movable frame 401 and the object-side surface 402d of the fixed frame 402 face each other in the direction of the optical axis OA.

[0051] Furthermore, the cylindrical portion 401a is formed on the movable frame 401 so that the tip of the cylindrical portion 401a does not come into contact with the object-side surface 402d of the fixed frame 402 in the direction of the optical axis OA. In other words, the length of the cylindrical portion 401a in the direction of the optical axis OA is such that it does not come into contact with the object-side surface 402d of the fixed frame 402 when the movable frame 401 is incorporated into the shake correction unit 400. At least a portion of the cylindrical portion 401a fits into the opening 402e in the fixed frame 402 in the direction of the optical axis OA. In other words, when the movable frame 401 is incorporated into the shake correction unit 400 and viewed from a direction perpendicular to the optical axis, a portion of the cylindrical portion 401a overlaps the area within the opening 402e in the fixed frame 402. The second surface 401c of the movable frame 401 is the surface on the object side of the movable frame 401 in the direction of the optical axis OA, and is the surface opposite to the first surface 401b in the direction of the optical axis OA.

[0052] Furthermore, a buffer material 403 is attached to the tip side of the cylindrical portion 401a. Specifically, the buffer material 403 is attached to a third surface 401d, which is the outer circumferential portion (outer diameter side) of the cylindrical portion 401a. Here, the third surface 401d, which is the outer circumferential portion of the cylindrical portion 401a, is the surface on the outer diameter side of the cylindrical portion 401a in the direction perpendicular to the optical axis. The fourth surface 401e of the movable frame 401 is the surface on the inner circumferential side of the cylindrical portion 401a in the direction perpendicular to the optical axis. The fourth surface 401e, which is the inner circumferential portion of the cylindrical portion 401a, is the surface on the inner diameter side of the cylindrical portion 401a in the direction perpendicular to the optical axis, and is the surface opposite to the third surface 401d in the direction perpendicular to the optical axis.

[0053] In this embodiment, the buffer material 403 is wrapped around the cylindrical portion 401a approximately once around the cylindrical portion 401a and moves integrally with the movable frame 401. That is, the buffer material 403 is attached to the third surface 401d of the cylindrical portion 401a in a substantially annular shape. The buffer material 403 is attached by being attached to the third surface 401d of the cylindrical portion 401a using an adhesive such as double-sided tape. While the buffer material 403 is assumed to be made of a strip-shaped urethane foam, it may also be made of other elastically deformable shock-absorbing materials such as rubber. Furthermore, other elastically deformable shock-absorbing materials such as rubber may be ring-shaped. However, if a ring-shaped material is used, it must be charged (stretched within its elastic range) to prevent it from coming off the cylindrical portion 401a. In this case, the buffer material 403 is held in an elastically deformed state, which may result in a lower impact absorbing effect than if the buffer material 403 were a strip-shaped material attached with double-sided tape. Therefore, when using a foam such as a strip of urethane foam that can be attached with an adhesive such as double-sided tape, or other elastically deformable shock absorbing material such as rubber, it is preferable that the buffer material 403 is not ring-shaped. By using a configuration in which the strip-shaped buffer material 403 is attached to the tip of the cylindrical portion 401a extending from the movable frame 401 in this way, it is possible to reduce the impact more than with conventional configurations, and the attachment work can be made easier, thereby improving the ease of assembly (workability).

[0054] In this embodiment, the cylindrical portion 401a is provided on the movable frame 401. However, this is not limiting. For example, the cylindrical portion 401a may be provided on the fixed frame 402. In this case, the cylindrical portion 401a is formed so as to protrude (extend) from the object-side surface 402d of the fixed frame 402 toward the first surface 401b of the movable frame 401 in the optical axis OA direction. The tip of the cylindrical portion 401a protruding from the fixed frame 402 is formed to a length in the optical axis OA direction so as not to contact the first surface 401b of the movable frame 401. In this case, it is preferable that the first surface 401b of the movable frame 401, which faces the cylindrical portion 401a protruding from the fixed frame 402, is formed so as to be recessed by a predetermined amount or more toward the object side in the optical axis OA direction. That is, a groove (recess) equivalent to or similar to the opening 402e of the fixed frame 402 in this embodiment is formed in the movable frame 401.

[0055] Similarly to the above, a portion of the cylindrical portion 401a is configured to fit into the opening (groove) in the movable frame 401 in the direction of the optical axis OA. In other words, when the movable frame 401 is incorporated into the shake correction unit 400 and viewed from the direction perpendicular to the optical axis, a portion of the cylindrical portion 401a overlaps with the area within the opening (groove) in the fixed frame 402. Note that the attachment position of the buffer material 403 is the same as in the case of the movable frame 401, and therefore a description thereof will be omitted. With this configuration, even when the cylindrical portion 401a is provided on the fixed frame 402, it is possible to achieve the same effect as when the cylindrical portion 401a is provided on the movable frame 401.

[0056] Here, when cylindrical portion 401a is provided on fixed frame 402, from the viewpoint of ease of assembly, fixed frame 402 needs to have an outer peripheral surface for fixing movable rollers 405, as described above. Therefore, the outer peripheral surface gets in the way, making it more difficult to attach belt-shaped buffer material 403 than when cylindrical portion 401a is provided on movable frame 401. Therefore, a configuration in which belt-shaped buffer material 403 is attached to the tip of cylindrical portion 401a extending from movable frame 401, as in this embodiment, is preferable for achieving both impact reduction and improved ease of assembly (workability).

[0057] Next, the detailed arrangement of the buffer material 403 will be described using FIG. 7(B). As described above, the buffer material 403 is attached to the tip side of the cylindrical portion 401a (attached to the third surface 401d of the cylindrical portion 401a). At least a portion of the buffer material 403 is arranged so as to overlap with the opening 402e when viewed from a direction perpendicular to the optical axis. In other words, the buffer material 403 and the opening 402e are arranged in a cross section perpendicular to the optical axis. In this embodiment, a step is provided on the outer periphery of the cylindrical portion 401a in a direction in which the thickness becomes thinner toward the tip, and the buffer material 403 is attached within the step. In other words, the cylindrical portion 401a has a first thick portion whose thickness gradually becomes thinner toward the tip and a second thick portion that is thinner than the first thick portion and configured as a step. The buffer material 403 is arranged on the second thick portion side.

[0058] Specifically, the first thick portion is a portion of the cylindrical portion 401a having the fifth surface 401f, and is formed so that its thickness decreases from the movable frame 401 side toward the fixed frame 402 side. The second thick portion is a portion of the cylindrical portion 401a having the third surface 401d, and is formed so that its thickness does not decrease toward the fixed frame 402 side like the first thick portion, but is thinner than the thinnest part of the second thick portion. The buffer material 403 is attached to the third surface 401d of the second thick portion. In this way, the cylindrical portion 401a is formed on the movable frame 401 so that the second thick portion and then the first thick portion protrude toward the fixed frame side (surface 402d on the subject side) in this order.

[0059] As shown in FIG. 7(B), the fixed frame 402 has a first abutment portion 402a and a second abutment portion 402b. The first abutment portion 402a and the second abutment portion 402b are surfaces provided on the fixed frame 402 so as to face each other in the direction perpendicular to the optical axis, and are each formed in an annular shape on the fixed frame 402. As described above, at least a portion of the cylindrical portion 401a is recessed within the opening 402e when viewed in the direction perpendicular to the optical axis. Therefore, as shown in FIG. 7(B), the buffer material 403 is disposed between the first abutment portion 402a and the second abutment portion 402b in the direction perpendicular to the optical axis. In this way, the first abutment portion 402a and the second abutment portion 402b are disposed at positions overlapping the buffer material 403 when viewed in the direction perpendicular to the optical axis. That is, the buffer material 403 is disposed at a position overlapping the first contact portion 402a and the second contact portion 402b when viewed from a direction perpendicular to the optical axis. In other words, the buffer material 403, the first contact portion 402a, and a portion of the second contact portion 402b are disposed in the same phase in a plane perpendicular to the optical axis OA. It can also be said that the buffer material 403, the first contact portion 402a, and the second contact portion 402b are disposed in a plane perpendicular to the optical axis OA. Furthermore, as shown in FIG. 7, it can also be said that the buffer material 403, the first contact portion 402a, and the second contact portion 402b are disposed in a cross section including the optical axis OA.

[0060] When the movable frame 401 moves within a plane perpendicular to the optical axis, the first abutment portion 402a abuts against a fourth surface 401e, which is the surface on the inner periphery (inner diameter side) of the cylindrical portion 401a. Furthermore, when the movable frame 401 moves within a plane perpendicular to the optical axis, the second abutment portion 402b abuts against the outer periphery of the buffer material 403. That is, the second abutment portion 402b abuts against the surface (outer periphery side surface) of the buffer material 403 attached to the third surface 401d that faces the second abutment portion 402b.

[0061] Note that if the fixed frame 402 is provided with the cylindrical portion 401a, the movable frame 401 will be provided with a first abutment portion 402a and a second abutment portion 402b. In this case, as with the above, the first abutment portion 402a abuts against the inner peripheral (inner diameter) surface of the cylindrical portion 401a of the fixed frame 402 when the movable frame 401 moves in a plane perpendicular to the optical axis. Furthermore, the second abutment portion 402b abuts against the outer periphery of the buffer material 403 arranged on the cylindrical portion 401a of the fixed frame 402 when the movable frame 401 moves in a plane perpendicular to the optical axis. In this way, the cylindrical portion 401a can be provided on either the movable frame 401 or the fixed frame 402, and the first abutment portion 402a and the second abutment portion 402b can be provided on the other of the movable frame 401 or the fixed frame 402.

[0062] The clearance between the first contact portion 402a and the fourth surface 401e of the cylindrical portion 401a in the direction perpendicular to the optical axis is defined as d1. Furthermore, the clearance between the second contact portion 402b and the outer peripheral surface of the buffer material 403 in the direction perpendicular to the optical axis is defined as d2. In this case, d1 is greater than d2 (d1>d2) in all directions in which the movable frame 401 can move. Therefore, even if the movable frame 401 moves (moves), the second contact portion 402b will come into contact with the buffer material 403 before the first contact portion 402a comes into contact with the fourth surface 401e of the cylindrical portion 401a.

[0063] In this embodiment, the cylindrical portion 401a, the first contact portion 402a, and the second contact portion 402b are each formed in an annular shape. However, this is not limiting, and as long as d1 and d2 are constant regardless of the moving direction of the movable frame 401, at least one of the cylindrical portion 401a, the first contact portion 402a, and the second contact portion 402b does not have to be formed in an annular shape.

[0064] In the shake correction unit 400 of this embodiment, the cushioning material 403 is arranged within the thickness of the fixed lens 113c in the direction of the optical axis OA. Specifically, the cushioning material 403 attached to the third surface 401d of the cylindrical portion 401a is arranged within the thickness of the fixed lens 113c in the direction of the optical axis OA. Furthermore, as shown in FIG. 7B, in addition to the cushioning material 403, the first abutment portion 402a and the second abutment portion 402b are also within the thickness of the fixed lens 113c in the direction of the optical axis OA. By arranging the cylindrical portion 401a, the cushioning material 403, the first abutment portion 402a, the second abutment portion 402b, and other components in the above-described positional relationship, the shake correction unit 400 can be prevented from becoming large, and the interchangeable lens 101 can be made even more compact.

[0065] In this embodiment, the drive coil 413 and magnetic shield 414 are also arranged so as to overlap the thickness range of the fixed lens 113c. By arranging these components (parts) in this manner, it is possible to prevent the image stabilizer unit 400 from becoming too large and contribute to the miniaturization of the interchangeable lens 101, which is preferable. While the drive coil 413 and magnetic shield 414 are held by the fixed frame 402 in this embodiment, the drive magnet 411 and yoke 412 may be held by the fixed frame 402, and the drive coil 413 and magnetic shield 414 may be held by the movable frame 401. In this case, the drive coil 413 and magnetic shield 414 are arranged so as to overlap the thickness range of the fixed lens 113c in the optical axis OA direction. Thus, in this embodiment, at least a portion of the actuator functioning as a drive unit is arranged so as to overlap the thickness range of the fixed lens 113c in the optical axis OA direction.

[0066] Furthermore, in this embodiment, in order to hold the fixed lens 113c, the fixed frame 402 is provided with a holding portion 402c that covers the outer periphery of the fixed lens 113c, and the outer diameter of the holding portion 402c abuts against the inner diameter of the cylindrical portion 401a as a first abutment portion 402a. In other words, the first abutment portion 402a is the outer diameter side surface of the holding portion 402c, and when the movable frame 401 moves in a plane perpendicular to the optical axis, the inner diameter side surface of the cylindrical portion 401a abuts against the first abutment portion 402a, which is the outer diameter side surface of the holding portion 402c. This restricts the movement range of the movable frame 401 relative to the fixed frame 402. Note that, since the outer diameter of the holding portion 402c is used as the first abutment portion 402a, the above-mentioned actuator is arranged so as to be on the outer diameter side of the cylindrical portion 401a.

[0067] Here, assume that the first contact portion 402a is aligned with the second contact portion 402b in the optical axis OA direction and is positioned to contact the outer peripheral surface of the buffer material 403 arranged on the cylindrical portion 401a. In this case, the clearance between the outer diameter of the holding portion 402c and the inner diameter of the cylindrical portion 401a needs to be greater than the aforementioned d1. This requires the cylindrical portion 401a to shift further outward, and accordingly, the actuator and other components are also positioned further outward, resulting in a larger unit (e.g., shake correction unit) in the radial direction (direction perpendicular to the optical axis). Furthermore, in this case, to ensure the width between the first contact portion 402a and the second contact portion 402b in the optical axis OA direction, the amount of protrusion of the cylindrical portion 401a also increases, raising the concern that the unit will become larger in the optical axis OA direction. Furthermore, since cylindrical portion 401a becomes more susceptible to deformation as the protrusion amount increases, it becomes necessary to increase the overall wall thickness of cylindrical portion 401a, which promotes an increase in the size of the unit in the outer diameter direction.

[0068] According to the above-described arrangement of the components of the shake correction unit 400 of the interchangeable lens 101 in this embodiment, impact can be reduced more than with conventional configurations, and the attachment work can be made easier, improving assembly (workability). Furthermore, the shake correction unit 400 can be made smaller while preventing it from becoming larger. This makes it possible to provide an interchangeable lens (lens device) 101 having a shake correction unit 400 with a structure that allows for impact reduction, while also achieving both miniaturization and improved assembly.

[0069] While the present invention has been described in detail above based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included. Furthermore, each of the above-described embodiments merely represents one embodiment of the present invention, and each embodiment can be appropriately combined.

[0070] The disclosure of this embodiment includes the following configuration.

[0071] (Configuration 1) a fixed frame for holding a fixed lens; a movable frame that holds a movable lens and moves relative to the fixed frame in a direction perpendicular to the optical axis; a cylindrical portion having an annular shape and formed so as to protrude from either the fixed frame or the movable frame in a direction along the optical axis; a first contact portion that comes into contact with the cylindrical portion of the other of the fixed frame and the movable frame when the movable frame moves in a direction perpendicular to the first contact portion; a second abutment portion that a cushioning material arranged on the cylindrical portion and the other of the fixed frame and the movable frame abuts against when the movable frame moves in a plane perpendicular to the fixed frame and the movable frame; A lens device, characterized in that the buffer material, the first contact portion, and the second contact portion are arranged on a plane perpendicular to an optical axis.

[0072] (Configuration 2) the fixing frame has an opening, 2. The lens device according to claim 1, wherein at least a portion of the buffer material is disposed in a position overlapping with the opening when viewed in a direction perpendicular to the optical axis.

[0073] (Configuration 3) 3. The lens device according to configuration 1 or 2, wherein the buffer material, the first contact portion, and a portion of the second contact portion are in the same phase in a plane perpendicular to the optical axis.

[0074] (Configuration 4) the cylindrical portion is formed on the movable frame, the first contact portion and the second contact portion are formed on the fixed frame, The lens device described in any one of configurations 1 to 3, characterized in that the buffer material, the first abutment portion, and the second abutment portion are within a range of thickness in a direction along the optical axis of the fixed lens when viewed from a direction perpendicular to the optical axis.

[0075] (Configuration 5) the cylindrical portion is formed on the movable frame, the first contact portion and the second contact portion are formed on the fixed frame so as to be positioned opposite to each other in a direction perpendicular to an optical axis, 4. The lens device according to any one of configurations 1 to 3, wherein the buffer material is disposed between the first contact portion and the second contact portion in a direction perpendicular to the optical axis.

[0076] (Configuration 6) 6. The lens device according to any one of configurations 1 to 5, wherein the second contact portion contacts the buffer material before the first contact portion contacts the cylindrical portion.

[0077] (Configuration 7) the cylindrical portion is formed on the movable frame, 7. The lens device according to any one of configurations 1 to 6, wherein the buffer material is disposed within a range of thickness in a direction along the optical axis of the fixed lens.

[0078] (Configuration 8) 8. The lens device according to any one of configurations 1 to 7, wherein the cylindrical portion is formed on the movable frame and extends from the movable frame toward the fixed frame in a direction along the optical axis.

[0079] (Configuration 9) 9. The lens device according to any one of configurations 1 to 8, wherein the buffer material is disposed on the outer diameter side of the cylindrical portion.

[0080] (Configuration 10) The cylindrical portion is configured to have at least a first thick portion and a second thick portion, The lens device according to any one of configurations 1 to 9, wherein the first thick portion is thicker than the second thick portion, and the buffer material is disposed in the second thick portion.

[0081] (Configuration 11) The thickness of the first thick portion gradually decreases toward the second thick portion, The lens device according to configuration 10, wherein the cylindrical portion is formed on the movable frame so that the first thick portion and the second thick portion protrude toward the fixed frame in this order.

[0082] (Configuration 12) 12. The lens device according to any one of configurations 1 to 11, wherein the first contact portion and the second contact portion are surfaces formed on the fixed frame.

[0083] (Configuration 13) the fixed frame is provided with a holding portion that holds the fixed lens, the first contact portion is an outer diameter side surface of the holding portion, The lens device described in any one of configurations 1 to 11, characterized in that the inner diameter surface of the cylindrical portion and the outer diameter surface of the holding portion abut against each other, thereby regulating the range of movement of the movable frame relative to the fixed frame.

[0084] (Configuration 14) at least one driving means for driving the movable frame in a plane perpendicular to the optical axis; The lens device described in any one of configurations 1 to 13, characterized in that, when viewed from a direction along the optical axis, at least a portion of the driving means is arranged to overlap the range of the thickness of the fixed lens.

[0085] (Configuration 15) an image sensor that captures an image of a subject through a lens; and the lens device according to any one of configurations 1 to 14. An imaging device characterized by: [Explanation of symbols]

[0086] 113b Movable Lens 113c fixed lens 400 Anti-vibration unit 401 Movable Frame 402 Fixed Frame 403 Cushioning material 410 Anti-vibration drive unit

Claims

1. a fixed frame for holding a fixed lens; a movable frame that holds a movable lens and moves relative to the fixed frame in a direction perpendicular to the optical axis; a cylindrical portion having an annular shape and formed so as to protrude from either the fixed frame or the movable frame in a direction along the optical axis; a first contact portion that contacts the other of the fixed frame and the movable frame and the cylindrical portion when the movable frame moves in a direction perpendicular to the first contact portion; a second abutment portion that a cushioning material arranged on the cylindrical portion and the other of the fixed frame and the movable frame abuts against when the movable frame moves within a plane perpendicular to the fixed frame and the movable frame; A lens device, characterized in that the buffer material, the first contact portion, and the second contact portion are arranged on a plane perpendicular to an optical axis.

2. the fixing frame has an opening, 2. The lens device according to claim 1, wherein at least a portion of the buffer material is disposed at a position overlapping the opening when viewed in a direction perpendicular to the optical axis.

3. 2. The lens device according to claim 1, wherein the buffer material, the first contact portion, and a portion of the second contact portion are in the same phase in a plane perpendicular to the optical axis.

4. the cylindrical portion is formed on the movable frame, the first contact portion and the second contact portion are formed on the fixed frame, 2. The lens device according to claim 1, wherein the buffer material, the first contact portion, and the second contact portion are within a range of thickness in a direction along the optical axis of the fixed lens when viewed from a direction perpendicular to the optical axis.

5. the cylindrical portion is formed on the movable frame, the first contact portion and the second contact portion are formed on the fixed frame so as to be opposed to each other in a direction perpendicular to an optical axis, 2. The lens device according to claim 1, wherein the buffer material is disposed between the first contact portion and the second contact portion in a direction perpendicular to the optical axis.

6. 2. The lens device according to claim 1, wherein the second contact portion contacts the buffer material before the first contact portion contacts the cylindrical portion.

7. the cylindrical portion is formed on the movable frame, The lens device according to claim 1 , wherein the buffer material is disposed within a range of thickness in a direction along the optical axis of the fixed lens.

8. 2. The lens device according to claim 1, wherein the cylindrical portion is formed on the movable frame and extends from the movable frame toward the fixed frame in a direction along the optical axis.

9. The lens device according to claim 1 , wherein the buffer material is disposed on the outer diameter side of the cylindrical portion.

10. the cylindrical portion is configured to have at least a first thick portion and a second thick portion; 2. The lens device according to claim 1, wherein the first thick portion is thicker than the second thick portion, and the buffer material is disposed in the second thick portion.

11. The first thick portion has a thickness that gradually decreases toward the second thick portion, The lens device according to claim 10 , wherein the cylindrical portion is formed on the movable frame so that the first thick portion and the second thick portion protrude toward the fixed frame in this order.

12. 2. The lens device according to claim 1, wherein the first contact portion and the second contact portion are surfaces formed on the fixed frame.

13. the fixed frame is provided with a holding portion that holds the fixed lens, the first contact portion is an outer diameter side surface of the holding portion, 2. The lens device according to claim 1, wherein the range of movement of the movable frame relative to the fixed frame is restricted by the contact between an inner diameter surface of the cylindrical portion and an outer diameter surface of the holding portion.

14. at least one driving means for driving the movable frame in a plane perpendicular to the optical axis; 2. The lens device according to claim 1, wherein the driving means is disposed so as to overlap at least a portion of the range of the thickness of the fixed lens when viewed along the optical axis.

15. an image sensor that captures an image of a subject through a lens; and a lens device according to any one of claims 1 to 14. An imaging device characterized by:

Images