Blade driving device and imaging device

Abstract

To provide a blade driving device which prevents a blade member from being moved from a static position even when large impact is applied thereto, and an imaging device.SOLUTION: A blade driving device includes a blade member 30 which is rotatable between a close position where an opening is closed and an open position where the opening is opened with a blade shaft 16 as a center, and is provided with a cam hole 38, and an actuator for rotationally driving the blade member. The actuator includes a rotation member 44 which is rotatable with a driving shaft 18 as a center, and has a driving pin 48 moved between a first rotation position corresponding to the close position of the blade member and a second rotation position corresponding to the open position, while being engaged with a cam hole of the blade member. The cam hole is configured to permit rotation of the driving pin when the blade member is at the close position and the open position, and to bring a contact surface 52 vertical to a line connecting the center of the driving shaft and the center of the driving pin into contact with the driving pin, when the blade member is rotated in a state in which the driving pin is at the first rotation position or the second rotation position.SELECTED DRAWING: Figure 6

Description

[Technical Field]

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

[0002] In imaging devices such as cameras and video cameras, a blade drive device is used to open and close an opening that exposes an imaging element in the imaging device using a blade member to realize a shutter function and a filter switching function. In such a blade drive device, the blade member is moved between a closed position that closes the opening and an open position that opens the opening, and the blade member is held in a rest position at either the closed position or the open position (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-154150 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the imaging device is dropped or installed in an environment where vibrations are easily transmitted, a large impact will be applied to the blade drive device, causing the blade member to move from its resting position, changing the open or closed state of the opening and potentially adversely affecting the image being captured.

[0005] The present invention has been made in consideration of the problems of the conventional technology, and aims to provide a blade drive device in which the blade members are unlikely to move from their resting positions even when a large impact is applied, and an imaging device equipped with such a blade drive device. [Means for solving the problem]

[0006] According to a first aspect of the present invention, there is provided a cleaning device comprising: a base having an opening; a blade member rotatable about a first axis between a closed position at which the opening is closed and an open position at which the opening is opened, the blade member having a cam hole; and a drive unit that rotationally drives the blade member between the closed position and the open position, the drive unit including a rotating member rotatable about a second axis, the rotating member having a drive pin that engages with the cam hole of the blade member and moves between a first rotation position corresponding to the closed position of the blade member and a second rotation position corresponding to the open position, The cam hole of the blade member allows the drive pin to rotate from the first rotation position to the second rotation position or from the second rotation position to the first rotation position when the blade member is in the closed position or the open position, and when the blade member rotates from the closed position to the open position or from the open position to the closed position with the drive pin in the first rotation position or the second rotation position, a first vertical plane perpendicular to a line connecting the center of the second axis and the center of the drive pin comes into contact with the drive pin.

[0007] According to a second aspect of the present invention, there is provided an imaging device comprising the above-mentioned blade drive device and an imaging element arranged on a surface where light that has passed through the opening in the base of the blade drive device forms an image. [Effects of the Invention]

[0008] According to the present invention, when a large impact is applied to the blade member while the drive pin is in the first rotational position or the second rotational position, causing the blade member to rotate from the closed position to the open position or from the open position to the closed position, the first vertical surface perpendicular to the line connecting the center of the drive shaft and the center of the drive pin comes into contact with the drive pin. Therefore, even if the first vertical surface of the cam hole pushes the drive pin, the rotating member is pushed in the direction toward the second axis, making it difficult for the rotating member to rotate about the second axis. Therefore, rotation of the blade member without being driven by the rotation of the drive unit is suppressed. Furthermore, because the drive pin is allowed to rotate from the first rotational position to the second rotational position or from the second rotational position to the first rotational position when the blade member is in the closed position or the open position, driving the drive unit allows the drive pin to move from the first rotational position to the second rotational position or from the second rotational position to the first rotational position, thereby moving the blade member to the open position or the closed position. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a blade drive device according to one embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view showing some components of the blade drive device of FIG. [Figure 3] FIG. 3 is a front view schematically showing the blade drive device of FIG. 1 in a state where the blade members are in a closed position. [Figure 4] FIG. 4 is a front view schematically showing the blade drive device of FIG. 1 in a state where the blade members are in an open position. [Figure 5] FIG. 5 is a partially enlarged view of the blade member shown in FIG. [Figure 6] FIG. 6 is a partially enlarged view of the blade member and the rotary member shown in FIG. [Figure 7] FIG. 7 is a partially enlarged view of the blade member and the rotary member shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of a blade drive device and an imaging device according to the present invention will be described in detail with reference to FIGS. 1 to 7. In FIGS. 1 to 7, identical or corresponding components are denoted by the same reference numerals, and redundant description will be omitted. Furthermore, in FIGS. 1 to 7, the scale and dimensions of each component may be exaggerated or some components may be omitted. In the following description, unless otherwise specified, terms such as "first" and "second" are used merely to distinguish components from one another and do not represent a particular order or sequence. Furthermore, in this specification, "perpendicular to a line connecting the center of the second shaft and the center of the drive pin" means forming an angle of 90 degrees ± 5 degrees with respect to a line connecting the center of the second shaft and the drive pin.

[0011] FIG. 1 is a perspective view showing a blade drive device 1 according to one embodiment of the present invention. The blade drive device 1 according to this embodiment is disposed between an imaging element (a CCD image sensor or a CMOS image sensor) and an imaging optical system such as a lens inside an imaging device such as a camera (e.g., an infrared camera) or a video camera, in order to realize a shutter function and a filter switching function. As shown in FIG. 1, the blade drive device 1 includes a base 10, a cover 20 that covers the base 10, and a blade member 30 that is disposed in a space formed between the base 10 and the cover 20. The cover 20 is fixed to the base 10 by a screw 22. An opening 24 is formed in the cover 20.

[0012] Fig. 2 is an exploded perspective view of the components of the blade drive device 1 excluding the cover 20 and the screws 22. As shown in Fig. 2, a recess 12 is formed on the +Z direction side of the base 10, and a rectangular opening 14 is formed in this recess 12 for exposing the imaging element. The imaging element described above is disposed on the surface where light transmitted through this opening 14 forms an image. Furthermore, a blade shaft 16 (first shaft) and a drive shaft 18 (second shaft) extending in the +Z direction are formed in the recess 12. A blade member 30 and an actuator 40 (drive unit) that rotates and drives the blade member 30 are housed in this recess 12.

[0013] The blade member 30 is a plate-like member having a base 34 in which an axial hole 32 through which the blade shaft 16 is inserted is formed, and a rectangular shielding portion 36 that can close the opening 14 of the base 10 (and the opening 24 of the cover 20). A cam hole 38 is formed in the base 34 of the blade member 30 close to the axial hole 32. The blade member 30 rotates around the blade shaft 16 inserted into the axial hole 32, thereby moving between a closed position where the opening 14 of the base 10 is closed and an open position where the opening 14 is open.

[0014] Actuator 40 includes a yoke 41 made of a magnetic material, a coil base 43 to which a coil 42 wound around yoke 41 is attached, and a rotating member 44 that can rotate around drive shaft 18 of base 10. Coil base 43 is provided with a terminal 45 that is electrically connected to coil 42, and this terminal 45 protrudes from base 10 in the −Z direction as shown in FIG. 1 and is adapted to be connected to an external control circuit.

[0015] The rotating member 44 includes a rotor magnet 46 rotatably mounted on the drive shaft 18 of the base 10, and a drive lever 47 connected to the rotor magnet 46. A cylindrical drive pin 48 extending in the +Z direction is provided at the tip of the drive lever 47. The outer diameter of this drive pin 48 is slightly smaller than the minimum width of the cam hole 38 of the blade member 30. The drive pin 48 is inserted into the cam hole 38 of the blade member 30, and is able to move the contents of the cam hole 38 while engaging with the cam hole 38 of the blade member 30.

[0016] In this embodiment, the yoke 41 is thin and flat in the Z direction and has a U-shape including two arm portions 41A and 41B. The coil 42 is wound around one of the arm portions 41A. The rotor magnet 46 is disposed between the arm portions 41A and 41B of the yoke 41 and is composed of a magnet having different magnetic poles along the circumferential direction. The yoke 41 is disposed so as to exert a magnetic effect on the rotor magnet 46. Therefore, when current is applied to the coil 42 through the terminal 45, the arm portions 41A and 41B of the yoke 41 are magnetized to have opposite magnetic poles, and the magnetic attraction of the arm portions 41A and 41B causes the rotor magnet 46 and the drive lever 47 to rotate around the drive shaft 18 of the base 10. As described above, the drive pin 48 of the drive lever 47 is engaged with the cam hole 38 of the blade member 30, so that as the drive lever 47 rotates, the blade member 30 rotates around the blade shaft 16 of the base 10.

[0017] FIG. 3 is a front view schematically illustrating the state when the blade member 30 is in the closed position. As shown in FIG. 3, when the blade member 30 is in the closed position, the blade member 30 closes the opening 14 of the base 10. In this state, when current is passed in one direction through the coil 42 of the actuator 40, the arms 41A and 41B of the yoke 41 are magnetized and become magnetic. The magnetic poles of the rotor magnet 46 are attracted to the opposite magnetic poles of the arms 41A and 41B of the yoke 41, respectively, causing the rotor magnet 46 and the drive lever 47 to rotate clockwise. Then, due to engagement between the drive pin 48 of the drive lever 47 and the cam hole 38 of the blade member 30, the blade member 30 rotates counterclockwise around the blade shaft 16 as the drive lever 47 rotates, as shown in FIG. 4. The blade member 30 rotates counterclockwise around the blade shaft 16 until the side surface 34A of the base portion 34 of the blade member 30 abuts against the stopper 11 of the base 10, and finally reaches an open position where it opens the opening 14 of the base 10.

[0018] 4, when a current is applied to the coil 42 of the actuator 40 in the opposite direction to the above, and the arms 41A and 41B of the yoke 41 are magnetized, the magnetic poles of the rotor magnet 46 are attracted to the opposite magnetic poles of the arms 41A and 41B of the yoke 41, causing the rotor magnet 46 and the drive lever 47 to rotate counterclockwise. Then, due to engagement between the drive pin 48 of the drive lever 47 and the cam hole 38 of the blade member 30, the blade member 30 rotates clockwise about the blade shaft 16 of the base 10 in conjunction with the rotation of the drive lever 47. The blade member 30 rotates clockwise about the blade shaft 16 until the side surface 34B of the base portion 34 of the blade member 30 abuts against the stopper 13 of the base 10, as shown in FIG. 3, and finally reaches a closed position where it closes the opening 14 of the base 10.

[0019] In this way, the actuator 40 is configured to rotate the rotor magnet 46 and the drive lever 47 by receiving a supply of power via the terminal 45, and to drive the blade members 30 to rotate between the closed position and the open position via the engagement between the drive pin 48 and the cam hole 38 of the blade members 30. Hereinafter, the position of the drive pin 48 when the blade members 30 are in the closed position will be referred to as a first rotation position, and the position of the drive pin 48 when the blade members 30 are in the open position will be referred to as a second rotation position.

[0020] In this embodiment, the shape of the yoke 41 and the arrangement of the rotor magnet 46 are adjusted so that the rotor magnet 46 is attracted to the yoke 41 by the magnetic force of the rotor magnet 46 when no current is supplied to the coil 42 of the actuator 40. Specifically, in the state shown in Fig. 3, even when the supply of current to the coil 42 is stopped, the position of the rotor magnet 46 is maintained by the magnetic force that the rotor magnet 46 exerts on the yoke 41, so that the blade members 30 are maintained in the closed position. Similarly, in the state shown in Fig. 4, even when the supply of current to the coil 42 is stopped, the position of the rotor magnet 46 is maintained by the magnetic force that the rotor magnet 46 exerts on the yoke 41, so that the blade members 30 are maintained in the open position.

[0021] By adjusting the shape of the yoke 41 and the arrangement of the rotor magnet 46 in this way, the blade members 30 can be held in the open or closed position when no current is supplied to the coil 42, but if a large impact is applied to the blade drive device 1 due to a fall or vibration, it is conceivable that the blade members 30 will rotate away from the open or closed position without being driven by the rotation of the actuator 40. The blade drive device 1 in this embodiment has a structure that prevents the blade members 30 from rotating away from the open or closed position without being driven by the rotation of the actuator 40, even when such a large impact is applied. This structure will be described below.

[0022] Figure 5 is a partially enlarged view of the blade member 30 shown in Figure 3. As shown in Figure 5, the cam hole 38 of the blade member 30 is defined by a plurality of surfaces, and in particular includes a first contact surface 51 that contacts the drive pin 48 when the drive pin 48 is in the first rotational position, a second contact surface 52 that contacts the drive pin 48 when the blade member 30 is about to rotate from the closed position to the open position with the drive pin 48 in the first rotational position, a third contact surface 53 that contacts the drive pin 48 when the drive pin 48 is in the second rotational position, and a fourth contact surface 54 that contacts the drive pin 48 when the blade member 30 is about to rotate from the open position to the closed position with the drive pin 48 in the second rotational position.

[0023] FIG. 6 is a partial enlarged view of the blade member 30 and the rotating member 44 shown in FIG. 3. In the state shown in FIG. 6, as described above, the blade member 30 is in the closed position, and the drive pin 48 in the cam hole 38 of the blade member 30 is in the first rotation position. At this time, the drive pin 48 is in contact with the first contact surface 51 of the cam hole 38, and a small gap is formed between the drive pin 48 and the second contact surface 52. If a large impact is applied to the blade member 30 in this state, for example, due to a fall or vibration, the blade member 30 will attempt to rotate counterclockwise around the blade shaft 16 (the blade member 30 cannot rotate clockwise because the side surface 34B of the blade member 30 is in contact with the stopper 13 of the base 10 (see FIG. 3)), but at this time the second contact surface 52 of the cam hole 38 will come into contact with the drive pin 48. This second contact surface 52 extends in a direction D1 perpendicular to a line L1 connecting the center K of the drive shaft 18 and the center P of the drive pin 48. Therefore, when the blade member 30 attempts to rotate counterclockwise around the blade shaft 16, even if the second contact surface 52 of the cam hole 38 presses the drive pin 48, the drive lever 47 is pushed in the direction toward the drive shaft 18, making it difficult for the rotating member 44 to rotate around the drive shaft 18. This prevents the blade member 30 from rotating counterclockwise without being driven by the rotation of the actuator 40.

[0024] On the other hand, in the state shown in Fig. 6, a space S1 is secured in the cam hole 38 of the blade member 30 on the clockwise side of the drive pin 48 around the drive shaft 18, and the drive pin 48 can rotate (clockwise) from the first rotation position toward the second rotation position shown in Fig. 6. Therefore, as described above, by driving the actuator 40, the rotating member 44 can be rotated around the drive shaft 18, and the drive pin 48 can be moved from the first rotation position to the second rotation position, thereby moving the blade member 30 to the closed position.

[0025] 7 is a partially enlarged view of the blade member 30 and the rotating member 44 shown in FIG. 4. In the state shown in FIG. 7, as described above, the blade member 30 is in the open position, and the drive pin 48 in the cam hole 38 of the blade member 30 is in the second rotation position. At this time, the drive pin 48 is in contact with the third contact surface 53 of the cam hole 38, and a small gap is formed between the drive pin 48 and the fourth contact surface 54. If a large impact is applied to the blade member 30 in this state, for example, due to a fall or vibration, the blade member 30 will attempt to rotate clockwise around the blade shaft 16 (the blade member 30 cannot rotate clockwise because the side surface 34A of the blade member 30 is in contact with the stopper 11 of the base 10 (see FIG. 4)), but at this time the fourth contact surface 54 of the cam hole 38 will come into contact with the drive pin 48. This fourth contact surface 54 extends in a direction D2 perpendicular to a line L2 connecting the center K of the drive shaft 18 and the center P of the drive pin 48. Therefore, when the blade member 30 attempts to rotate clockwise around the blade shaft 16, even if the fourth contact surface 54 of the cam hole 38 presses the drive pin 48, the drive lever 47 is pushed in the direction toward the drive shaft 18, making it difficult for the rotating member 44 to rotate around the drive shaft 18. This suppresses clockwise rotation of the blade member 30 without the rotational drive of the actuator 40.

[0026] 7, a space S2 is secured in the cam hole 38 of the blade member 30 on the counterclockwise side of the drive pin 48 around the drive shaft 18, and the drive pin 48 can rotate (counterclockwise) from the second rotation position shown in FIG. 7 toward the first rotation position. Therefore, as described above, by driving the actuator 40, the rotating member 44 can be rotated around the drive shaft 18, and the drive pin 48 can be moved from the second rotation position to the first rotation position, thereby moving the blade member 30 to the open position.

[0027] As described above, according to this embodiment, even if a large impact is applied to the blade member 30, when the blade member 30 attempts to rotate from the closed position to the open position with the drive pin 48 in the first rotation position shown in FIG. 6, the second contact surface 52 (first vertical surface) perpendicular to the line L1 connecting the center K of the drive shaft 18 and the center P of the drive pin 48 comes into contact with the drive pin 48. Therefore, even if the second contact surface 52 of the cam hole 38 presses the drive pin 48, the drive lever 47 of the rotation member 44 is pushed in the direction toward the drive shaft 18, making it difficult for the rotation member 44 to rotate around the drive shaft 18. Therefore, counterclockwise rotation of the blade member 30 without the rotational drive of the actuator 40 is suppressed. Furthermore, when the blade member 30 is in the closed position shown in FIG. 6, the space S1 is secured on the clockwise side of the drive pin 48 in the first rotation position, allowing the drive pin 48 to rotate from the first rotation position toward the second rotation position. Therefore, by driving the actuator 40, it is possible to move the drive pin 48 from the first rotation position to the second rotation position, thereby moving the blade members 30 to the open position.

[0028] Similarly, even if a large impact is applied to the blade member 30, when the blade member 30 attempts to rotate from the open position to the closed position with the drive pin 48 in the second rotation position shown in FIG. 7, the fourth contact surface 54 (second vertical surface) perpendicular to the line L2 connecting the center K of the drive shaft 18 and the center P of the drive pin 48 comes into contact with the drive pin 48. Therefore, even if the fourth contact surface 54 of the cam hole 38 presses the drive pin 48, the drive lever 47 of the rotation member 44 is pushed in the direction toward the drive shaft 18, making it difficult for the rotation member 44 to rotate around the drive shaft 18. Therefore, clockwise rotation of the blade member 30 without the rotational drive of the actuator 40 is suppressed. Furthermore, when the blade member 30 is in the closed position shown in FIG. 7, a space S2 is secured on the counterclockwise side of the drive pin 48 in the second rotation position, allowing the drive pin 48 to rotate from the second rotation position toward the first rotation position. Therefore, by driving the actuator 40, it is possible to move the drive pin 48 from the second rotation position to the first rotation position, thereby moving the blade members 30 to the closed position.

[0029] In this embodiment, rotation of the blade members 30 without the rotational drive of the actuator 40 is suppressed in both the closed and open positions of the blade members 30. However, rotation of the blade members 30 without the rotational drive of the actuator 40 may be suppressed only in either the closed or open position of the blade members 30. In either case, it is preferable to suppress rotation of the blade members 30 without the rotational drive of the actuator 40 at a position where the moment of gravity acting on the blade members 30 is relatively large. That is, assuming that gravity acts in the -Y direction, the moment of gravity acting on the blade members 30 in the closed position is greater than the moment of gravity acting on the blade members 30 in the open position. Therefore, it is preferable to provide the above-described rotation suppression mechanism for the blade members 30 at least in the closed position of the blade members 30. For the same reason, when gravity acts in the -X direction, it is preferable to provide the above-described rotation suppression mechanism for the blade members 30 at least in the open position of the blade members 30.

[0030] As described above, the blade drive device according to the present invention can employ the following configurations. [Configuration 1] a base having an opening; a blade member rotatable about a first axis between a closed position that closes the opening and an open position that opens the opening, the blade member having a cam hole; a drive unit that rotates the blade member between the closed position and the open position; Equipped with the drive unit includes a rotary member that is rotatable about a second axis and has a drive pin that engages with the cam hole of the blade member and moves between a first rotation position corresponding to the closed position of the blade member and a second rotation position corresponding to the open position of the blade member, The cam hole of the blade member allows the drive pin to rotate from the first rotation position to the second rotation position or from the second rotation position to the first rotation position when the blade member is in the closed position or the open position, and is configured so that a first vertical plane perpendicular to a line connecting the center of the second shaft and the center of the drive pin comes into contact with the drive pin when the blade member rotates from the closed position to the open position or from the open position to the closed position with the drive pin in the first rotation position or the second rotation position. Blade drive device.

[0031] [Configuration 2] 2. The blade drive device according to claim 1, wherein a moment exerted by gravity on the blade member when it is in the closed position or the open position is greater than a moment exerted by gravity on the blade member when it is in the open position or the closed position.

[0032] [Configuration 3] the rotating member of the drive unit includes a rotor magnet having different magnetic poles along a circumferential direction and attached to the base so as to be rotatable about the second axis; The drive unit is a yoke that can impart a magnetic effect to the rotor magnet; a coil wound around a portion of the yoke; 3. The blade drive device according to configuration 1 or 2, further comprising:

[0033] [Configuration 4] The blade drive device according to any one of configurations 1 to 3, wherein the cam hole of the blade member allows the drive pin to rotate from the second rotation position to the first rotation position or from the first rotation position to the second rotation position when the blade member is in the open position or the closed position, and when the blade member rotates from the front open position to the closed position or from the closed position to the open position with the drive pin in the second rotation position or the first rotation position, a second vertical plane perpendicular to a line connecting the center of the second axis and the center of the drive pin comes into contact with the drive pin.

[0034] The imaging device according to the present invention may also have the following configuration. [Configuration 5] A blade drive device according to any one of configurations 1 to 4; an imaging element disposed on a plane where light transmitted through the opening of the base of the blade drive device forms an image; An imaging device comprising:

[0035] Although the preferred embodiments of the present invention have been described above, it goes without saying that the present invention is not limited to the above-described embodiments and may be embodied in various different forms within the scope of the technical concept thereof. [Explanation of symbols]

[0036] 1. Blade drive device 10 base 11,13 Stopper 14 Aperture 16 Feather shaft (first shaft) 18 Drive shaft (second shaft) 20 Cover 30 Blade member 38 Cam hole 40 Actuator (drive unit) 41 York 42 Coil 44 Rotating member 46 rotor magnet 47 Drive lever 48 Drive pin 51 First contact surface 52 Second contact surface (first vertical surface) 53 Third Contact Surface 54 Fourth contact surface (second vertical surface) K Drive shaft center P Center of drive pin

Claims

1. a base having an opening; a blade member rotatable about a first axis between a closed position at which the opening is closed and an open position at which the opening is opened, the blade member having a cam hole; a drive unit that rotates the blade member between the closed position and the open position; Equipped with the drive unit includes a rotary member that is rotatable about a second axis and has a drive pin that engages with the cam hole of the blade member and moves between a first rotation position corresponding to the closed position of the blade member and a second rotation position corresponding to the open position of the blade member, The cam hole of the blade member allows the drive pin to rotate from the first rotation position to the second rotation position or from the second rotation position to the first rotation position when the blade member is in the closed position or the open position, and when the blade member rotates from the closed position to the open position or from the open position to the closed position with the drive pin in the first rotation position or the second rotation position, a first vertical plane perpendicular to a line connecting the center of the second shaft and the center of the drive pin comes into contact with the drive pin. Blade drive device.

2. The blade drive device according to claim 1 , wherein a moment exerted by gravity on the blade member when the blade member is in the closed position or the open position is greater than a moment exerted by gravity on the blade member when the blade member is in the open position or the closed position.

3. the rotating member of the drive unit includes a rotor magnet having different magnetic poles along a circumferential direction, the rotor magnet being attached to the base so as to be rotatable about the second axis; The drive unit is a yoke that can impart a magnetic effect to the rotor magnet; a coil wound around a portion of the yoke; The impeller drive device of claim 1 further comprising:

4. 2. The blade drive device according to claim 1, wherein the cam hole of the blade member allows the drive pin to rotate from the second rotation position to the first rotation position or from the first rotation position to the second rotation position when the blade member is in the open position or the closed position, and when the blade member rotates from the front open position to the closed position or from the closed position to the open position with the drive pin in the second rotation position or the first rotation position, a second vertical plane perpendicular to a line connecting the center of the second shaft and the center of the drive pin comes into contact with the drive pin.

5. The blade drive device according to any one of claims 1 to 4; an imaging element disposed on a plane where light transmitted through the opening of the base of the blade drive device forms an image; An imaging device comprising:

Images