WO2021065134A1

WO2021065134A1 - Imaging device and control method

Info

Publication number: WO2021065134A1
Application number: PCT/JP2020/026459
Authority: WO
Inventors: 正規塩澤; 将文米田; 由也山崎
Original assignee: ソニー株式会社
Priority date: 2019-10-02
Filing date: 2020-07-06
Publication date: 2021-04-08
Also published as: JPWO2021065134A1

Abstract

This imaging device is configured so that an opening/closing blade can be driven using both a motor and a spring, wherein quietness is improved and the life of a blade opening/closing device is extended.　The imaging device according to the present technology comprises: an opening/closing blade that travels in a direction to open/close an opening through which incident light passes to an imaging surface; a motor that is provided so as to be capable of transmitting traveling power to the opening/closing blade; a traveling spring that is provided so as to be capable of transmitting traveling power to the opening/closing blade; and a control unit that controls the travel of the opening/closing blade. The control unit switches a mode, as a travel mode of the opening/closing blade, between a plurality of opening/closing blade travel modes in which the power consumption of the motor differs.

Description

Imaging device, control method

This technology relates to an image pickup device in which an opening / closing blade can be driven by both a motor and a spring, and a technical field regarding a control method in the image pickup device.

For example, some image pickup devices such as still cameras and video cameras are provided with a blade opening / closing device (shutter unit) having opening / closing blades for opening / closing an opening through which incident light passing through an imaging surface passes.
In this type of imaging device, for example, as disclosed in Patent Document 1 below, a shutter unit (hereinafter referred to as "hybrid shutter") that drives an opening / closing blade by the torque of both a motor and a spring is known. There is.

Japanese Unexamined Patent Publication No. 56-72424

In the hybrid shutter, the traveling speed of the opening / closing blade (so-called curtain speed) can be increased, and in particular, there is an advantage in increasing the strobe synchronization speed.
However, when the curtain speed becomes high, the impact caused by the traveling of the opening / closing blade becomes large, which tends to reduce the quietness during shutter operation and shorten the life of the blade opening / closing device.

This technology was made in view of the above circumstances, and aims to improve the quietness of the image pickup device in which the switchgear can be driven by both the motor and the spring, and to extend the life of the switchgear switchgear. To do.

The first imaging device according to the present technology includes an opening / closing blade that travels in a direction of opening / closing an opening through which incident light passing through an imaging surface passes, a motor provided so as to transmit traveling power to the opening / closing blade, and a motor. A traveling spring provided so as to be able to transmit traveling power to the opening / closing blade and a control unit for controlling the traveling of the opening / closing blade are provided, and the control unit consumes the motor as a traveling mode of the opening / closing blade. The mode is switched between a plurality of driving modes having different power sources.
As a result, for the image pickup device in which the opening / closing blades can be driven by both the motor and the spring, the motor power consumption is switched from the high running mode to the low running mode, that is, the running speed of the opening / closing blades is low from the fast running mode. It is possible to switch to the driving mode.

The first imaging device described above may be configured to include a capacitor that serves as a driving power source for the motor.
By providing the above-mentioned capacitor, the driving voltage of the motor can be increased, and the traveling speed of the opening / closing blade can be increased. Further, in a traveling motor having low power consumption of the motor, the time required for charging the capacitor can be shortened, so that a mode with a high continuous shooting speed can be realized.

In the first imaging device described above, the control unit has a first traveling mode and a second traveling mode as traveling modes having different power consumption, and the first traveling mode includes the motor and the traveling spring. Both are modes for transmitting the traveling power, and the second traveling mode is a mode in which the traveling spring transmits the traveling power and the power consumption of the motor is lower than that of the first traveling mode. It is conceivable to have a configuration.
As a result, it can be considered that the traveling mode of the opening / closing blade is a hybrid traveling mode in which the opening / closing blade is driven by the power of both the motor and the traveling spring, and that only the traveling spring drives the opening / closing blade (the motor drives the opening / closing blade). It is possible to switch to the spring running mode (including the case of slightly assisting).

In the first imaging device described above, the traveling spring is stored by the power of the motor, and the control unit has a first traveling mode and a second traveling mode as traveling modes having different power consumption. The first traveling mode may be configured such that the number of times the capacitor is charged is less than that of the second traveling mode.
When the traveling spring is stored by the power of the motor, in order to enable the opening and closing blades to be driven by both the motor and the traveling spring, the capacitor is charged to obtain the motor drive power for spring energy storage. Two chargings are required, one for obtaining the motor driving power for driving the open / close blades and the other for obtaining the motor driving power. Therefore, in the above-mentioned first running mode, these two charges are performed to realize the running mode as the hybrid running mode, and in the second running mode, only the charging for spring storage is performed and the opening and closing is performed only by the running spring. It is possible to realize a spring running mode that drives the blades.

In the first imaging device described above, it is conceivable that the control unit selects the traveling mode based on any of the parameters of the traveling speed, the continuous shooting speed, and the shutter speed of the opening / closing blade.
For example, a mode with high motor power consumption should be selected to increase the traveling speed of the opening / closing blades, and a mode with low motor power consumption (that is, a mode with a short charging time) should be selected to increase the continuous shooting speed. You should choose. Further, when increasing the shutter speed, it may be necessary to select a mode in which the motor power consumption is high.

In the first imaging device described above, it is conceivable that the control unit selects the traveling mode based on the parameter of the shutter speed as the strobe synchronization speed.
As a result, if the strobe tuning speed is a speed that cannot be achieved in the driving mode with low motor power consumption, the driving mode with high motor power consumption is selected, and conversely, in the driving mode with low motor power consumption. When the speed is feasible, it is possible to select a driving mode with low motor power consumption to improve the continuous shooting speed.

In the first imaging device described above, the control unit has, as the traveling mode, a first mode and a second mode in which the power consumption of the motor is lower than that of the first mode, and the traveling of the opening / closing blade. When the speed is not specified to be increased to a predetermined speed or higher and the continuous shooting speed is set to be automatically selected, it is conceivable that the second mode is selected as the traveling mode.
As a result, if the user is set to automatically select the continuous shooting speed when it is estimated that the user does not intend to increase the running speed of the opening / closing blade, the running mode with low motor power consumption (that is, the charging time is short). Mode) can be selected.

In the first imaging device described above, the control unit has, as the traveling mode, a first mode and a second mode in which the power consumption of the motor is lower than that of the first mode, and determines the continuous shooting speed. When the speed is not specified to be higher than the speed and the traveling speed of the opening / closing blade is set to be automatically selected, it is conceivable that the first mode is selected as the traveling mode.
As a result, when it is estimated that the user does not intend to increase the continuous shooting speed and the setting is made to automatically select the opening / closing blade traveling speed, the traveling mode with high motor power consumption (that is, the motor output increases). Mode) can be selected.

In the first imaging device described above, it is conceivable that the control unit is configured to control the charging time of the capacitor as a control different from the switching of the traveling mode.
By adjusting the charging time of the capacitor, it is possible to change the time required from the start of the release to the start of the next release, that is, the continuous shooting speed can be changed, and the output of the motor can be changed. Therefore, it is possible to change the traveling speed of the opening / closing blade.

In the first imaging device described above, it is conceivable that the control unit controls to adjust the charging current of the capacitor based on the remaining amount of the battery which is the operating power source of the imaging device.
As a result, when the remaining battery power is high and the battery has sufficient power supply capacity, the current value of the charging current is increased to increase the running speed of the opening / closing blades, and the remaining battery power is low and the battery does not have sufficient power supply capacity. In that case, it is possible to reduce the current value of the charging current to prevent the output voltage of the battery from dropping unnecessarily.

In the first imaging device described above, it is conceivable that the control unit is configured to control the charging voltage of the capacitor.
By adjusting the charging voltage of the capacitor, the magnitude of the motor output is adjusted, that is, the traveling speed of the opening / closing blades is adjusted, and by adjusting the charging time of the capacitor, the continuous shooting speed is adjusted.

In the first imaging device described above, it is conceivable that the control unit is configured to control adjusting the drive current of the motor.
By adjusting the drive current of the motor, the magnitude of the motor output is adjusted, that is, the traveling speed of the on-off blades is adjusted, and the continuous shooting speed is adjusted by adjusting the charging time of the capacitor.

In the first imaging device described above, it is conceivable that the capacitor is charged even during the discharge period of the capacitor.
As a result, the waiting period until the release can be started can be shortened.

Further, the first control method according to the present technology is an opening / closing blade that travels in a direction of opening / closing an opening through which incident light passing through an imaging surface passes, and a motor provided so as to transmit traveling power to the opening / closing blade. A control method in an imaging device including a traveling spring provided so as to be able to transmit traveling power to the opening / closing blade and a control unit for controlling the traveling of the opening / closing blade, wherein the control unit opens / closes the opening / closing. This is a control method for switching between a plurality of traveling modes in which the power consumption of the motor is different as the traveling mode of the blades.
Even with such a first control method, the same operation as that of the first image pickup apparatus described above can be obtained.

Further, the second imaging device according to the present technology can transmit traveling power to the opening / closing blades that travel in the opening / closing direction, which is the direction in which the opening through which the incident light passing through the imaging surface passes, and the opening / closing blades. A motor provided, a traveling spring provided so as to be able to transmit traveling power to the opening / closing blade, and a control unit for controlling the traveling of the opening / closing blade are provided, and the control unit comprises a traveling mode of the opening / closing blade. The mode is switched between a plurality of traveling modes in which the traveling speeds of the opening / closing blades are different.
As a result, the image pickup device in which the opening / closing blades can be driven by both the motor and the spring can be switched from the traveling mode in which the traveling speed of the opening / closing blades is high to the traveling mode in which the traveling speed is low.

The second control method according to the present technology is provided with an opening / closing blade that travels in the opening / closing direction, which is the direction in which the opening through which the incident light passing through the imaging surface passes, and a traveling power that can be transmitted to the opening / closing blade. A control method in an imaging device including a motor, a traveling spring provided so as to transmit traveling power to the opening / closing blade, and a control unit for controlling the traveling of the opening / closing blade. The traveling mode of the opening / closing blade is a control method for switching the mode between a plurality of traveling modes in which the traveling speed of the opening / closing blade is different.
Even with such a second control method, the same operation as that of the above-mentioned second imaging device can be obtained.

Further, the third imaging device according to the present technology includes an opening / closing blade that operates in the opening / closing direction to open / close the opening, a coil to which a driving current is supplied, a magnet that is rotated by energizing the coil, and the magnet. A motor having a rotor gear that is rotated with the rotation of the magnet, a drive body that has a drive gear that is meshed with the rotor gear and is rotated in the opposite direction to the magnet, and a drive body that rotates in the opposite direction to the magnet. The blade opening / closing unit is provided with a traveling spring that applies an urging force to one of the opening / closing blades in the opening / closing direction, and the opening / closing blade is operated in the opening / closing direction in accordance with the rotation operation of the drive body. The control unit includes a control unit that controls the traveling of the opening / closing blade, and the control unit switches the mode between a plurality of traveling modes in which the power consumption of the motor is different as the traveling mode of the opening / closing blade.
In the blade opening / closing unit having the above configuration, the opening / closing blade can be driven by the driving force of the motor generated by energizing the coil and the urging force of the traveling spring in the driving body. Further, with respect to the image pickup device in which the opening / closing blades can be driven by both the motor and the spring by the above control unit, the switching from the traveling mode in which the power consumption of the motor is high to the traveling mode in which the power consumption of the motor is low, that is, the opening / closing blades It is possible to switch from a running mode with a high running speed to a running mode with a low running speed.

Further, the fourth imaging device according to the present technology includes an opening / closing blade that operates in the opening / closing direction to open / close the opening, a coil to which a driving current is supplied, a magnet that is rotated by energizing the coil, and the magnet. A motor having a rotor gear that is rotated with the rotation of the magnet, a drive body that has a drive gear meshed with the rotor gear and is rotated in the opposite direction to the magnet, and the drive body. The blade opening / closing unit is provided with a traveling spring that applies an urging force to one of the opening / closing blades in the opening / closing direction, and the opening / closing blade is operated in the opening / closing direction in accordance with the rotational operation of the drive body. The control unit includes a control unit that controls the traveling of the opening / closing blades, and the control unit switches the mode between a plurality of traveling modes in which the traveling speeds of the opening / closing blades are different as the traveling modes of the opening / closing blades.
In the blade opening / closing unit having the above configuration, the opening / closing blade can be driven by the driving force of the motor generated by energizing the coil and the urging force of the traveling spring in the driving body. Further, the above-mentioned control unit makes it possible to switch the image pickup device in which the opening / closing blades can be driven by both the motor and the spring from the traveling mode in which the traveling speed of the opening / closing blades is fast to the traveling mode in which the traveling speed is low. ..

It is a perspective view of the image pickup apparatus as an embodiment which concerns on this technique. It is a perspective view which shows the image pickup apparatus in the state which was seen from the direction different from FIG. It is a schematic side view of the image pickup apparatus. It is a perspective view of the blade opening / closing device. It is an exploded perspective view of the blade opening / closing device. It is a front view which shows the state which the opening / closing blade is held in an open position. It is a front view which shows the state which the opening / closing vane is held in a closed position. It is an exploded perspective view which shows the drive mechanism and the like. It is an exploded perspective view which shows the drive mechanism and the like as seen from the direction different from FIG. It is an enlarged perspective view which shows a magnet, a gear body, and a drive body. FIG. 5 is an enlarged perspective view showing a magnet, a gear body, and a drive body as viewed from a direction different from that of FIG. It is an enlarged perspective view which shows the lock operation unit. It is an enlarged perspective view which shows the lock operation unit as seen from the direction different from FIG. 15 to 18 show the operation of the blade opening / closing device, and this figure is a rear view showing an initial state of the drive mechanism. It is a rear view which shows the state of the drive mechanism immediately after the closing operation of an opening / closing blade is started. FIG. 15 is a rear view showing a state in which the opening / closing blades are closed and the connecting shaft of the driving body is in contact with the brake lever. FIG. 16 is a rear view showing a state in which the opening / closing blades are closed, the drive body is decelerated by the brake lever, and the unlocked body is pressed by the pressing shaft of the brake lever. It is a rear view which shows the state of the drive mechanism at the time of opening operation of an opening / closing vane. It is an enlarged perspective view which shows the lock operation unit which concerns on a modification. FIG. 5 is an enlarged perspective view showing a lock operation unit according to a modified example as viewed from a direction different from that of FIG. 22 to 26 show the operation of the blade opening / closing device using the lock operation unit according to the modified example, and this figure is a rear view showing the initial state of the drive mechanism. It is a rear view which shows the state of the drive mechanism immediately after the closing operation of an opening / closing blade is started. FIG. 22 is a rear view showing a state in which the opening / closing blades are closed and the connecting shaft of the driving body is in contact with the brake lever. FIG. 23 is a rear view showing a state in which the opening / closing blades are closed, the drive body is decelerated by the brake lever, and the release arm is pressed by the pressing shaft of the brake lever. FIG. 24 is a rear view showing a state in which the release arm and the holding lever are rotated to the lock holding position following FIG. 24. It is a rear view which shows the state of the drive mechanism at the time of opening operation of an opening / closing vane. It is a block diagram which showed the electric internal structure example of the image pickup apparatus as an embodiment. It is a figure which showed the circuit structure example of the drive system of the magnetic drive part (motor) in this embodiment. It is a figure for demonstrating operation for each traveling mode. It is a flowchart which showed the process for switching a running mode according to a strobe tuning speed. It is a figure for demonstrating the definition of Hi / Low of a shutter speed, a curtain speed, and a frame speed in control example I. A combination of shutter speed, curtain speed, and frame speed settings in Control Example I is shown. It is a flowchart for demonstrating the process as control example I. Similarly, it is a flowchart for demonstrating the process as control example I. Similarly, it is a flowchart for demonstrating the process as control example I. It is a figure which showed the circuit structure example of the drive system of the magnetic drive part in the image pickup apparatus as a 1st modification. It is a figure for demonstrating the image of adjustment in the 1st modification. It is a figure for demonstrating the image of adjustment as a 2nd modification. It is a figure which showed the circuit structure example of the drive system of the magnetic drive part in the image pickup apparatus as a 2nd modification. It is a figure which illustrated the relationship between the curtain speed and the frame speed in the 2nd modification. It is a figure for demonstrating the image of adjustment as a 3rd modification. It is a figure which showed the circuit structure example of the drive system of the magnetic drive part 27 in the image pickup apparatus 1 as a third modification. It is a figure for demonstrating the image of the 4th modification. It is a figure which showed the circuit structure example of the drive system of the magnetic drive part in the image pickup apparatus as a 4th modification.

Hereinafter, a mode for carrying out the present technology will be described with reference to the attached drawings.
The explanation will be given in the following order.
<1. Mechanical configuration>
[1-1. Schematic configuration of the imaging device]
[1-2. Configuration of blade switchgear]
[1-3. Operation of blade switchgear]
[1-4. Summary]
[1-5. Modification example]
[1-6. Operation of the blade switchgear using the lock operation unit according to the modified example]
<2. Electrical configuration>
[2-1. Electrical configuration example of image pickup device]
[2-2. About driving mode]
[2-3. Control example I]
[2-4. Control example II]
[2-5. First modification]
[2-6. Second variant]
[2-7. Third variant]
[2-8. Fourth variant]
[2-9. About "imaging"]
<3. Summary of embodiments>
<4. This technology>

In the embodiment shown below, the imaging device according to the present technology is applied to a still camera, and the blade opening / closing device (blade opening / closing unit) according to the present technology is applied to a focal plane shutter provided in the still camera.
In particular, in the present embodiment, the image pickup device is a digital camera provided with an image pickup element, and the focal plane shutter is formed as an electronic front curtain in which the traveling of the front curtain is realized by resetting the charge of the image pickup element. An example is given in which the running of the curtain is realized as the running of the opening / closing blade.

The scope of application of this technology is not limited to still cameras and focal plane shutters provided in still cameras, and is provided in, for example, various image pickup devices incorporated in video cameras and other devices, and these image pickup devices. It can be widely applied to various blade opening / closing devices such as irises.

In the following explanation, the direction as seen from the user as a photographer who shoots with a still camera shall indicate the front-back, up-down, left-right directions. Therefore, the subject side is the front side and the user side is the rear side.

The directions shown below are for convenience of explanation, and the implementation of the present technology is not limited to these directions.

Further, the lens group shown below may include those composed of a single or a plurality of lenses, these single or a plurality of lenses, and other optical elements such as an iris.

<1. Mechanical configuration>
[1-1. Schematic configuration of the imaging device]

First, a schematic configuration of the image pickup apparatus will be described (see FIGS. 1 to 3).
As shown in FIGS. 1 and 2, the image pickup apparatus 1 is composed of, for example, required parts arranged inside and outside a horizontally long flat housing 2. As shown in FIG. 1, the image pickup device 1 may be a device in which the interchangeable lens 200 can be attached and detached.

A flash (strobe) 3 is provided on the front surface of the housing 2. A shutter button 4, a zoom switch 5, and a power button 6 are provided on the upper surface of the housing 2 (see FIGS. 1 and 2). A display 7,

various operation units

8, 8, ..., And a finder 9 are provided on the rear surface of the housing 2.

Inside the housing 2, as shown in FIG. 3, an optical system 10 having a lens group, an optical element, and the like, and specifically, an image sensor 12 that controls the amount of light taken in by the optical system 10. The blade opening / closing device (blade opening / closing unit: focal plane shutter in this example) 11 that can shield the light incident on the image pickup surface, and the image sensor 12 that photoelectrically converts the light captured through the blade opening / closing device 11 They are arranged in order from the front side.

[1-2. Configuration of blade switchgear]

The configuration of the blade opening / closing device 11 will be described below (see FIGS. 4 to 13).
The blade opening / closing device 11 has a base body 13, a pressing plate 14, opening / closing blades 15,

links

16, 16 and a drive mechanism 17, and is arranged on the front surface side of the image pickup element 12 (see FIGS. 4 to 6).

The base body 13 is formed, for example, in a horizontally long rectangular shape, and has a rectangular opening 13a penetrating in the front-rear direction (see FIGS. 4 and 5). The opening 13a is one size larger than the effective incident region of light on the image pickup surface of the image pickup device 12. The effective incident region of light on the imaging surface is a region in which light captured by the optical system 10 and necessary for generating an image is incident.

The lower portion of the opening 13a in the base body 13 is provided as a holding portion 18 serving as a holding region in which the opening / closing blade 15 is held in the open position, and one side portion of the opening 13a in the base body 13 is used as the mounting portion 19. It is provided. The image sensor 12 is arranged on the rear side of the base body 13.

Support pins 19a and 19a projecting forward are provided at the lateral ends of the mounting portion 19 so as to be separated from each other in the vertical direction. A shaft moving hole 19b is formed in the mounting portion 19, and the shaft moving hole 19b is formed in a substantially arc shape.

The holding plate 14 is formed in substantially the same size and shape as the base body 13 and has a through hole 14a. The holding plate 14 is attached to the base body 13 from the front side with the opening / closing blade 15 sandwiched between them. When the pressing plate 14 is attached to the base body 13, the opening 13a is located directly behind the transmission hole 14a.

A relief hole 14b is formed in the holding plate 14, and the relief hole 14b is formed in an arc shape.

The opening / closing blade 15 is composed of a plurality of sheet-shaped

sectors

15a, 15a, ... (See FIG. 5). In the blade opening / closing device 11 that functions as a focal plane shutter, for example, a combination of an electronic curtain that functions as a front curtain by controlling the image sensor 12 and an opening / closing blade 15 that is provided as a mechanical structure and functions as a rear curtain is used. It has a so-called electronic front curtain shutter configuration.

The

sectors

15a, 15a, ... Are formed in a horizontally long shape, and for example, four sectors are provided. At least a part of the

sectors

15a, 15a, ... The opening / closing blade 15 is positioned so as to overlap each other in the thickness direction. The

sectors

15a, 15a, ... Are rotatably connected to both

links

16 and 16, respectively.

The

links

16 and 16 are formed in a sheet shape and function as parallel links.

Support holes

16a and 16a are formed in the

links

16 and 16 at one end in the longitudinal direction, respectively. One link 16 is formed with an elongated connecting hole 16b at a portion closer to one end in the longitudinal direction. The

links

16 and 16 have the support pins 19a and 19a of the base body 13 inserted into the support holes 16a and 16a, respectively, and are rotated with respect to the base plate 13 and the holding plate 14 with the support pins 19a and 19a as fulcrums.

The

links

16 and 16 are rotated with respect to the base plate 13 and the holding plate 14 while maintaining a parallel state by the driving force of the driving mechanism 17. When the

links

16 and 16 are rotated, the

sectors

15a, 15a, ... Are moved (traveled) substantially in the vertical direction. At this time, the movement amounts of the

sectors

15a, 15a, ... Are different, the overlapping area is changed, and the opening position (see FIG. 6) for opening the opening 13a of the base body 13 and the closing position for closing the opening 13a (see FIG. 7). ) Is opened and closed.

When the opening / closing blade 15 is moved as described above, the overlapping area of the

sectors

15a, 15a, ... Is changed according to the moved position, and the area is the smallest in the open position.

Therefore, since the space for arranging the opening / closing blades 15 becomes smaller at the open position and the area of the opening / closing blades 15 becomes the largest at the closed position, the blade opening / closing device 11 can be sufficiently miniaturized in the moving direction of the opening / closing blades 15. An opening 13a having a large size can be formed.

A sheet (not shown) having a light transmitting hole located corresponding to the opening 13a is arranged between the opening / closing blade 15 and the front surface of the base body 13 and between the opening / closing blade 15 and the rear surface of the holding plate 14, respectively. , These sheets facilitate the operation of the opening / closing blade 15.

The drive mechanism 17 is configured by arranging the required parts on the arrangement base 20 (see FIGS. 5, 8 and 9).

The arrangement base 20 is formed in a vertically long plate shape facing the front-rear direction. A shaft operating hole 20a is formed in the arrangement base 20 at a position near the lower end (see FIGS. 8 and 9). The arrangement base 20 is attached to the attachment portion 19 of the base body 13 from the rear.

A spring support shaft 21, a rotor shaft 22, a drive shaft 23, and a lock shaft 24 are attached to the arrangement base 20. The spring support shaft 21, the rotor shaft 22, the drive shaft 23, and the lock shaft 24 are respectively projected rearward from the arrangement base 20. A brake support shaft 25 and a stopper 26 are attached to the rear surface of the arrangement base 20, and the brake support shaft 25 and the stopper 26 are located around the shaft operating hole 20a.

The drive mechanism 17 is provided with a magnetic drive unit (motor) 27. The magnetic drive unit 27 has a mounting plate 28, a first yoke 29, a second yoke 30, a coil 31, and a magnet 32.

The mounting plate 28 is oriented in the front-rear direction, and the first yoke 29 and the second yoke 30 are attached to the mounting plate 28.

The first yoke 29 is formed with magnet arrangement holes 29a penetrating the front and rear. The first yoke 29 is attached to the upper half of the rear surface of the placement base 20. The second yoke 30 has a base portion 30a formed in a plate shape facing in the vertical direction and a core portion 30b protruding downward from the base portion 30a, and the base portion 30a is located above the first yoke 29. .. The coil 31 is arranged in a state of being wound around the core portion 30b, and functions as a stator.

The magnet 32 functions as a rotor and is formed in a cylindrical shape with the axial direction in the front-rear direction (see FIGS. 10 and 11). A rotor rotor gear 33 is attached to one end surface of the magnet 32 in the axial direction. The magnet 32 and the rotor gear 33 are supported by the rotor shaft 22, and are integrally rotatable around the rotor shaft 22 as a fulcrum. The magnet 32 is inserted into the magnet placement hole 29a and placed in a state where the first yoke 29 is attached to the placement base 20.

In the magnetic drive unit 27 configured as described above, when a current is supplied to the coil 31, the magnet 32 and the rotor gear 33 are integrally rotated in a direction corresponding to the direction (polarity) of the current. The magnet 32 and the rotor gear 33 are rotated in synchronization with the drive body 34.

The drive body 34 has a drive gear 35, a drive lever 36, and a supported shaft portion 37, and is rotatable.

The drive gear 35 is a spur gear. The drive gear 35 is provided with a spring hooking portion 35a by projecting rearward from a part of the outer peripheral portion.

The drive lever 36 is formed in a plate shape having a predetermined shape, and has a coupling base 36a extending in one direction and a protrusion 36b protruding from the central portion in the longitudinal direction of the coupling base 36a. A through hole (not shown) is formed at one end of the coupling base 36a in the longitudinal direction. The protrusion 36b projects in a direction orthogonal to the coupling base 36a. A connecting shaft 38 projecting forward is attached to the other end of the coupling base 36a in the longitudinal direction. A return shaft 39 projecting forward is attached to the protrusion 36b. A notch is formed at the other end of the coupling base 36a in the longitudinal direction, and the locked portion 36c is formed by this notch. The edge of the coupling base 36a on the locked portion 36c side is formed as a sliding inclined edge 36d.

One end of the coupling base 36a of the drive lever 36 is coupled to the rear surface of the drive gear 35, and the through hole coincides with the center hole of the drive gear 35. In a state where the coupling base 36a is coupled to the drive gear 35, the coupling shaft 38 and the return shaft 39 are located on the outer peripheral side of the drive gear 35.

The supported shaft portion 37 has a cylindrical portion 37a formed in a cylindrical shape whose axial direction is the front-rear direction, and a flange portion 37b protruding outward from one end portion in the axial direction of the tubular portion 37a. There is. The supported shaft portion 37 has a flange portion 37b coupled to one end of the coupling base 36a and is positioned coaxially with the drive gear 35.

The drive body 34 is urged in one direction in the rotation direction by the traveling spring 40. The traveling spring 40 is, for example, a torsion coil spring, and is supported by a tubular portion 37a of a supported shaft portion 37. One end of the traveling spring 40 is engaged with, for example, a part of the mounting plate 28 in the magnetic drive unit 27, and the other end is engaged with the spring hooking portion 35a of the drive gear 35.

The drive body 34 is supported by the drive shaft 23 and is rotatable around the drive shaft 23 as a fulcrum. The drive body 34 is urged in one rotation direction by the traveling spring 40, and the drive gear 35, the drive lever 36, and the supported shaft portion 37 are integrated and one rotation is performed by the urging force (driving force) of the traveling spring 40. It is made rotatable in the direction of movement. The drive body 34 is located between the first rotating end, which is the rotating end in the direction opposite to the urging force of the traveling spring 40, and the second rotating end, which is the rotating end in the direction of the urging force of the traveling spring 40. It is rotated.

In the drive body 34 configured as described above, the drive gear 35 is meshed with the rotor gear 33 of the magnetic drive unit 27. Therefore, the rotor 32 and the rotor gear 33 of the magnetic drive unit 27 are rotated in synchronization with the drive body 34 in the opposite direction.

In a state where the drive body 34 is supported by the drive shaft 23, the connecting shaft 38 attached to the drive lever 36 projects forward from the shaft operation hole 20a of the arrangement base 20.

The drive mechanism 17 is provided with a lock operation unit 41 (see FIGS. 8 and 9). The locking operation unit 41 has an unlocking body 42 and a locking member 43 (see FIGS. 12 and 13).

The unlocking body 42 has an unlocking base 44 and a suction piece 45, and is rotatable between a lock holding position and an unlocking position.

The release base 44 has a plate-shaped base surface portion 46 that faces substantially vertically, a first support surface portion 47 that is bent upward with respect to the base surface portion 46, and a second support surface portion that is bent upward with respect to the base surface portion 46. The first support surface portion 47 and the second support surface portion 48 are positioned so as to face each other in the front-rear direction, and the first support surface portion 47 is located behind the second support surface portion 48.

A part of the first support surface portion 47 is provided as a first spring receiving portion 47a projecting laterally from the base surface portion 46, and a part of the second support surface portion 48 projects laterally from the base surface portion 46. It is provided as a second spring receiving portion 48a, and the first spring receiving portion 47a and the second spring receiving portion 48a are positioned so as to face each other in the front-rear direction. The other part of the second support surface portion 48 is projected from the base surface portion 46 in the direction opposite to the second spring receiving portion 48a on the side, and this protruding portion is provided as the release receiving portion 48b. The first support surface portion 47 is provided with a regulation protrusion 48c protruding downward from the release receiving portion 48b.

A substantially cylindrical first spring support member 49 and a second spring support member 50 are attached to the first spring receiving portion 47a and the second spring receiving portion 48a, respectively.

The unlocking spring 51 is supported by the first spring supporting member 49. The unlocking spring 51 is, for example, a torsion coil spring, one end of which is engaged with a spring support shaft 21 attached to the arrangement base 20, and the other end of which is engaged with a first support surface portion 47.

The suction piece 45 is formed of a magnetic metal material and is fixed to the base surface portion 46 of the release base 44 via the fixed shaft 52. The suction piece 45 is located on the upper surface side of one end portion of the base surface portion 46 in the left-right direction.

The lock member 43 is orthogonal to the supported plate portion 53 and the supported plate portion 53 located on the front side of the release base 44 facing the second support surface portion 48, and the base surface portion 46 is located on the lower side of the release base 44. It has a pressed plate portion 54 positioned so as to face the front end portion. A shaft insertion hole 53a is formed in the supported plate portion 53 through the front and rear. The supported plate portion 53 is provided with a lock portion 53b protruding downward. The lock member 43 is rotatable between a locked position and a non-locked position.

A lock spring 55 is supported by the second spring support member 50. The spring force of the lock spring 55 is smaller than the spring force of the unlock spring 51. The lock spring 55 is, for example, a torsion coil spring, one end of which is engaged with the second support surface portion 48 of the release base 44, and the other end of which is engaged with the supported plate portion 53 of the lock member 43.

The lock operation unit 41 is inserted into the lock shaft 24 by inserting the lock shaft 24 attached to the arrangement base 20 into the shaft insertion hole 53a of the lock member 43, the first spring support member 49, and the second spring support member 50. It is supported, and the unlocking body 42 and the locking member 43 are individually rotatable around the lock shaft 24 as a fulcrum.

In a state where the lock operation unit 41 is rotatable around the lock shaft 24 as a fulcrum, the lock release body 42 is urged by the lock release spring 51 in a direction in which the base surface portion 46 approaches the pressed portion plate 54 of the lock member 43. The lock member 43 is urged by the lock spring 55 in the direction in which the pressed portion plate 54 approaches the base surface portion 46. Therefore, the urging directions of the lock release spring 51 and the lock spring 55 are opposite to each other in the rotation direction of the lock operation unit 41, and a force other than the urging force is applied to the lock release body 42 and the lock member 43 in the rotation direction. In the unlocked state, the pressed plate portion 54 of the lock member 43 is pressed against the regulation protrusion 48c of the unlocking body 42.

In the unlocking body 42, the suction piece 45 can be attracted to the electromagnet 56. The electromagnet 56 has a magnetic force generating portion 57 formed in a bifurcated shape and a pair of

coil portions

58, 58. The magnetic force generating portion 57 is provided as a pair of

suction portions

57a and 57a in which bifurcated portions are lined up in the front-rear direction, and the

coil portions

58 and 58 are wound around the

suction portions

57a and 57a, respectively.

The electromagnet 56 is attached to, for example, the mounting plate 28. The unlocked body 42 is positioned so that the tip surfaces of the

suction portions

57a and 57a face the upper surface of the suction piece 45. In the electromagnet 56, the suction force on the suction piece 45 disappears when the

coil portions

58 and 58 are energized, and the suction force on the suction piece 45 is generated when the energization on the

coil portions

58 and 58 is stopped.

The drive mechanism 17 is provided with a brake lever 59 (see FIGS. 8 and 9). The brake lever 59 is formed in a substantially V shape and is rotatable around a brake support shaft 25 attached to the arrangement base 20 as a fulcrum. The brake lever 59 is rotated between the deceleration start position at which the drive body 34 starts deceleration and the rotation stop position at which the rotation is stopped.

The V-shaped bent portion of the brake lever 59 is supported by the brake support shaft 25. The brake lever 59 is provided with a portion extending from the portion supported by the brake support shaft 25 to one side as a brake arm 60, and a portion extending from the portion supported by the brake support shaft 28 to the other side as an action arm 61. .. A pressing shaft 62 is rotatably supported at the tip of the acting arm 61, for example.

The brake lever 59 is supported by a support pin 64 via a pressurizing spring 63 on the brake support shaft 25. Therefore, the brake lever 59 is supported by the pressurization spring 63 in a state where a constant load is applied to the arrangement base 20, and a rotational force larger than the frictional force with the arrangement base 20 generated by the pressurization spring 63 is applied. At that time, it is rotated with respect to the arrangement base 20.

In a state where the drive body 34, the lock operation unit 41, and the brake lever 59 are rotatably supported with respect to the arrangement base 20 as described above, the first yoke 29 and the second yoke 30 of the magnetic drive unit 27 are It is attached to the upper half of the placement base 20. At this time, as described above, the magnet 32 is inserted into the magnet arrangement hole 29a of the first yoke 29, and the connecting shaft 38 and the return shaft 39 attached to the drive lever 36 are forward from the shaft operation hole 20a of the arrangement base 20. (See FIG. 5).

Further, as described above, the arrangement base 20 is attached to the mounting portion 19 of the base body 13 from the rear, and the connecting shaft 38 projects forward from the shaft moving hole 19b of the base body 13 to the escape hole 14b of the holding plate 14. Will be inserted. The connecting shaft 38 is inserted into a connecting hole 16b formed in one of the links 16. Therefore, when the drive body 34 is rotated, the connecting shaft 38 is moved, the

links

16 and 16 are rotated while maintaining the parallel state, and the

sectors

15a, 15a, ...・・ Is moved in the vertical direction.

[1-3. Operation of blade switchgear]

The operation of the blade opening / closing device 11 will be described below (see FIGS. 14 to 18).

First, the initial state of each part of the drive mechanism 17 will be described (see FIG. 14).

In the initial state before the power button 6 of the image pickup apparatus 1 is operated, the coil 31 is not energized, the magnetic drive unit 27 is not generating a driving force, and the rotation of the magnet 32 is stopped. Has been made.

In the initial state, the electromagnet 56 is not energized, and a magnetic force is generated in the magnetic force generating portion 57. Therefore, the suction piece 45 is attracted by the magnetic force generating portion 57, and the suction piece 45 is attracted by the

suction portions

57a and 57a. Therefore, the unlocking body 42 is held at the lock holding position.

At this time, the lock member 43 is given an urging force in the direction in which the pressed portion plate 54 approaches the base surface portion 46 by the lock spring 55, and the pressed plate portion 54 presses against the regulation protrusion 48c of the unlocked body 42. The lock member 43 is held at the lock position.

In a state where the lock member 43 is held in the locked position, the locked portion 36c of the drive lever 36 in the drive body 34 is engaged with the lock portion 53b of the lock member 43, and the drive body 34 exerts an urging force on the traveling spring 40. On the contrary, the rotation is restricted and locked, and the rotation is held at the first rotation end. Therefore, the driving force generated by the urging force of the traveling spring 40 is not transmitted from the driving body 34 to the opening / closing blade 15, for example, the opening / closing blade 15 is held in the open position.

At this time, the image sensor 12 is in a state (non-exposure state) in which the exposure operation (charge accumulation) is not performed by the electronic curtain (front curtain).

In the initial state, the brake lever 59 is held at the deceleration start position, the brake arm 60 is separated from the connecting shaft 38 attached to the drive lever 36 of the drive body 34, and the pressing shaft 62 attached to the action arm 61 The release base 44 is separated from the release receiving portion 48b of the second support surface portion 48.

In the above-mentioned initial state, when the electromagnet 56 is energized, the opening / closing operation of the opening / closing blade 15 is started (see FIG. 15). When the opening / closing operation of the opening / closing blade 15 is started, the control of the electronic curtain (running of the electronic curtain) has already started.

In the image pickup apparatus 1, the opening / closing blade 15 can be operated by both the driving force of the magnetic driving unit 27 and the driving force of the traveling spring 40, and the opening / closing blade 15 can be operated only by the driving force of the traveling spring 40. It is also possible to operate the opening / closing blade 15. An example in which the opening / closing blade 15 is rotated from the open position to the closed position by both the driving force of the magnetic driving unit 27 and the driving force of the traveling spring 40 will be described below. Further, the operation from the closed position to the open position of the opening / closing blade 15 is performed by the driving force of the magnetic driving unit 27.

When the electromagnet 56 is energized, the operation of the opening / closing blade 15 from the open position to the closed position is started. When the operation from the open position to the closed position of the opening / closing blade 15 is performed, the electronic curtain is controlled according to the operating speed of the opening / closing blade 15 in a state where a slit is formed between the electronic curtain and the opening / closing blade 15. Light is incident on the image pickup device 12 through the formed slit to perform exposure.
Depending on the setting of the shutter speed (exposure time), the opening / closing blade 15 is not blocked by either the front curtain or the rear curtain so that the opening / closing blade 15 starts traveling after the end of the traveling of the electronic curtain (that is, the opening 13a is not blocked). The traveling operation of the electronic curtain and the opening / closing blade 15 may be controlled (so that a period during which the electronic curtain is fully opened can be obtained).

When the electromagnet 56 is energized, the magnetic force generated in the magnetic force generating unit 57 disappears, and the suction pieces 45 are released from being attracted by the

suction parts

57a and 57a. Therefore, the unlocking body 42 is rotated from the lock holding position to the unlocked position by the urging force of the unlocking spring 51.

When the unlocking body 42 is rotated from the lock holding position to the unlocking position, the pressing plate portion 54 of the lock member 43 is pressed by the restricting protrusion 48c of the unlocking body 42, and the driven body 34 is covered. The engagement between the lock portion 36c and the lock portion 53b of the lock member 43 is released. Therefore, the lock member 43 is integrated with the unlocking body 42 against the urging force of the lock spring 55 and is rotated from the locked position to the unlocked position.

The unlocked body 42 rotated toward the unlocked position is partially attached to the arrangement base 20 or comes into contact with a rotation restricting portion (not shown) formed on the arrangement base 20 to stop rotation and the unlocked position. Is held in. At the same time, the lock member 43 that has been rotated integrally with the unlocked body 42 toward the unlocked position is stopped rotating along with the unlocked body 42 and is held in the unlocked position.

On the other hand, when the locked portion 36c of the drive body 34 and the lock portion 53b of the lock member 43 are disengaged, the drive body 34 is rotated from the first rotation end to the second rotation by the urging force of the traveling spring 40. It is rotated toward the moving end, and the driving force generated by the urging force of the traveling spring 40 is transmitted to the opening / closing blade 15 via the driving body 34, and the opening / closing blade 15 is closed from the open position as the driving body 34 rotates. It is operated toward the position.

At this time, the coil 31 of the magnetic drive unit 27 is energized at the same time as the electromagnet 56 is energized, and the magnet 32 functioning as a rotor and the rotor gear 33 are integrally rotated in the direction opposite to the drive body 34, and the magnetic drive unit is energized. The driving force generated in 27 is transmitted from the rotor gear 33 to the opening / closing blade 15 via the driving body 34. Therefore, the opening / closing blade 15 is operated by both the driving force generated by the magnetic driving unit 27 and the driving force generated by the urging force of the traveling spring 40, and is operated at high speed from the open position to the closed position. ..

Subsequently, the coil 31 is energized, and the opening / closing blade 15 is further operated toward the closed position (see FIG. 16).

The magnetic drive unit 27 and the drive body 34 are continuously rotated in opposite directions in synchronization with each other, and the drive body 34 is further rotated toward the second rotation end by the urging force of the traveling spring 40. The drive body 34 further rotated toward the second rotation end is brought into contact with the brake arm 60 of the brake lever 59 whose connecting shaft 38 attached to the drive lever 36 is held at the deceleration start position, and the brake lever 59 is pressed against the connecting shaft 38 and is rotated from the deceleration start position to the rotation stop position against the frictional force. Therefore, the rotation speed of the drive body 34 is gradually reduced by the brake lever 59 as it approaches the second rotation end, and the operating speed of the opening / closing blade 15 is also gradually reduced as it approaches the closed position.

At this time, the pressing shaft 62 is brought into contact with the unlocking receiving portion 48b of the unlocking body 42 by the rotation of the brake lever 59. When the pressing shaft 62 of the brake lever 59 comes into contact with the unlocking receiving portion 48b of the unlocking body 42, the energization of the electromagnet 56 is stopped. Therefore, the magnetic force is generated again in the magnetic force generating unit 57.

Further, the magnetic drive unit 27 and the drive body 34 are synchronously rotated in opposite directions, the brake lever 59 is pressed by the connecting shaft 38 and continuously rotated, and the brake arm 60 is attached to the stopper 26 attached to the arrangement base 20. The rotation of the brake lever 59 is stopped in contact with the brake lever 59 (see FIG. 17).

The brake lever 59 is held in the rotation stop position by coming into contact with the stopper 26, and the rotation of the drive body 34, the magnet 32, and the rotor gear 33 is stopped when the rotation of the brake lever 59 is stopped, and the drive body 34 is moved. It is held at the second rotating end. At this time, the energization of the coil 31 of the magnetic drive unit 27 is stopped.

When the brake lever 59 is pressed by the connecting shaft 38 and rotated, the release receiving portion 48b of the unlocking body 42 is pressed by the pressing shaft 62 of the brake lever 59, and the unlocking body 42 becomes the urging force of the unlocking spring 51. On the contrary, it is rotated from the unlocked position to the locked holding position. At this time, since the urging force of the lock spring 55 is applied to the lock member 43, the lock member 43 is integrated with the unlocking body 42 and is rotated from the non-locked position to the locked position.

In the above example, when the pressing shaft 62 of the brake lever 59 comes into contact with the unlocking receiving portion 48b of the unlocking body 42, the energization of the electromagnet 56 is stopped, but the brake lever 59 stops rotating. When the drive body 34 is rotated to the position and the drive body 34 is rotated to the second rotation end, the energization of the electromagnet 56 may be stopped.

When the drive body 34 is held at the second rotating end as described above, the opening / closing blade 15 operated by the rotation of the driving body 34 reaches the closing position and from the opening position to the closing position of the opening / closing blade 15. Is completed, and the opening 13a of the base body 13 is closed.

At this time, the energization of the electromagnet 56 is stopped and a magnetic force is generated in the magnetic force generating portion 57. Therefore, the suction piece 45 is attracted by the magnetic force generating unit 57, the suction piece 45 is attracted by the

suction parts

57a and 57a, the unlocking body 42 is rotated to the lock holding position, and the lock member 43 returns to the initial state and the lock member 43 is in the lock position. It is rotated to return to the initial state.

When the operation from the open position to the closed position of the opening / closing blade 15 is completed, the operation from the closed position to the open position of the opening / closing blade 15 is subsequently started. When the operation of the opening / closing blade 15 from the closed position to the open position is started, the image sensor 12 is put into the non-exposure state described above by the electronic curtain.

The operation of the opening / closing blade 15 from the closed position to the open position is started by energizing the coil 31 of the magnetic drive unit 27 in the opposite direction (energization due to the opposite polarity) (see FIG. 18). ..

When the coil 31 is energized in the opposite direction, the driving force generated in the magnetic driving unit 27 is transmitted from the rotor gear 33 to the driving body 34, and the driving body 34 is subjected to the second force against the urging force of the traveling spring 40. It is rotated from the rotating end to the first rotating end to return to the initial state, and the driving force generated in the magnetic drive unit 27 is transmitted from the rotor gear 33 to the opening / closing blade 15 via the driving body 34, and the opening / closing blade 15 Is operated from the closed position to the open position.

When the drive body 34 is rotated from the second rotation end to the first rotation end as described above, the traveling spring 40 as the torsion coil spring is wound up, and the urging force on the drive body 34 is increased. To go. That is, the traveling spring 40 is wound up by the power of the magnetic drive unit 27 and stored (that is, the power is charged).

When the drive body 34 is rotated from the second rotation end to the first rotation end, the connecting shaft 38 of the drive body 34 is separated from the brake arm 60, but the return shaft 39 of the drive body 34 brakes. The arm 60 is contacted from the direction opposite to the contact direction of the connecting shaft 38, and the brake lever 59 is rotated from the rotation stop position to the deceleration start position by the return shaft 39 to return to the initial state. The brake lever 59 is rotated from the rotation stop position to the deceleration start position, so that the pressing shaft 62 is separated from the release receiving portion 48b of the release base 44.

When the drive body 34 is rotated from the second rotating end to the first rotating end, the lock member 43 is rotated from the unlocked position to the locked position, and the sliding inclined edge 36d of the drive lever 36d. Is slid on the lock portion 53b of the lock member 43, and the lock member 43 is once rotated against the urging force of the lock spring 55. Further, when the drive body 34 is rotated to the first rotation end, the sliding inclined edge 36d gets over the lock portion 53b, and the lock member 43 is rotated by the urging force of the lock spring 55 to lock the locked portion 36c. Engaged with the portion 53b, the drive body 34 is restricted from rotating against the urging force of the traveling spring 40, is locked, and is held at the first rotating end to return to the initial state.

When the drive body 34 is held by the first rotating end and returns to the initial state, the energization of the coil 31 in the opposite direction is stopped, and the magnetic drive unit 27 does not generate a driving force for the opening / closing blade 15. Be made.

As described above, the image pickup apparatus 1 has a so-called electronic front curtain shutter configuration by combining an electronic curtain that functions as a front curtain and an opening / closing blade 15 that is provided as a mechanical structure and functions as a rear curtain.

Some imaging devices use an electronic shutter that electronically performs both the front curtain and the rear curtain. In this case, the front curtain is performed by clearing (resetting) the electric charge, and the rear curtain is performed by continuous reading. .. However, in the case of an electronic shutter, since the speed is controlled by the reading speed of the sensor, there is a possibility that a problem called rolling shutter distortion occurs in which an image of a moving subject is distorted. On the other hand, some imaging devices use a shutter that mechanically performs both the front curtain and the rear curtain. In this case, both the drive mechanism of the front curtain and the drive mechanism of the rear curtain are required. , There is a risk that the size of the image pickup device will increase and the number of parts will increase.

Therefore, by configuring the electronic front curtain shutter by combining the electronic curtain and the opening / closing blade 15 like the image pickup device 1, the large size of the image pickup device 1 and the increase in the number of parts are suppressed, and the rolling shutter distortion is generated. It becomes possible to suppress.

In the above, an example in which the opening / closing blade 15 is operated from the open position to the closed position by both the driving force of the magnetic driving unit 27 and the driving force of the traveling spring 40 is shown, but the coil 31 is energized. It is also possible to operate the opening / closing blade 15 from the open position to the closed position only by the driving force generated by the urging force of the traveling spring 40.

In this case, the traveling speed of the opening / closing blade 15 is lower than the case where the opening / closing blade 15 is operated by both the driving force of the magnetic drive unit 27 and the driving force of the traveling spring 40, but the coil 31 is energized. Power consumption can be reduced as much as it is not performed.

[1-4. Summary]

As described above, in the image pickup device 1 and the blade opening / closing device 11, a magnetic drive unit having a magnet 32 that is rotated by energizing the coil 31 and a rotor gear 33 that is rotated by the rotation of the magnet 32. 27, a drive body 34 having a drive gear 35 meshed with the rotor gear 33, and a traveling spring 40 for applying an urging force to one side in the opening / closing direction to the opening / closing blade 15 via the driving body 34. 15 is operated in the opening / closing direction as the drive body 34 rotates.

Therefore, the opening / closing operation of the opening / closing blade 15 can be performed by the driving force of the magnetic driving unit 27 generated by energizing the coil 31 and the urging force of the traveling spring 40 in the driving body 34, and the magnetic driving unit 27 can be opened / closed. The opening / closing operation of the opening / closing blade 15 can be performed by reducing the driving force generated in the above, and the traveling speed of the opening / closing blade 15 can be increased without increasing the size of the magnetic drive unit 27 and increasing the power consumption. it can.

Further, the magnetic drive unit 27 and the drive body 34 are arranged side by side in the same direction as the opening / closing direction of the opening / closing blade 15, that is, in the direction orthogonal to the optical axis direction.

Therefore, since the magnetic drive unit 27 and the drive body 34 are arranged so as not to line up in the traveling direction of the light passing through the opening 13a, it is possible to reduce the size of the image pickup device 1 and the blade opening / closing device 11 in the traveling direction of the light. ..

Further, the drive body 34 is provided with a supported shaft portion 37 that functions as a rotation fulcrum portion, a torsion coil spring is used as the traveling spring 40, and the traveling spring 40 is supported by the supported shaft portion 37.

Therefore, since the arrangement space of the traveling spring 40 is small and the urging force applied to the opening / closing blade 15 can be increased, the drive body 34 can be miniaturized and the magnetic drive unit 27 can be miniaturized. Energy efficiency can be improved.

Furthermore, a locking member 43 having a locking portion 53b and operating between a locked position and a non-locking position is provided, a locked portion 36c is formed on the drive body 34, and the urging force of the traveling spring 40 at the locked position The drive body 34 is locked to the lock member 43 by pressing the locked portion 36c against the lock portion 53b.

Therefore, the locked portion 36c is pressed against the lock portion 53b by the urging force of the traveling spring 40, so that the initial position of the drive body 34 before the start of the opening / closing operation of the opening / closing blade 15 is determined, so that the initial position of the driving body 34 is stable. Therefore, stable opening / closing operation of the opening / closing blade 15 can be ensured.

In this way, in the blade opening / closing device 11, the initial positions of the magnet 32 and the drive body 34 are such that the locked portion 36c of the drive body 34 is pressed against the lock portion 53b of the lock member 43 by the urging force of the traveling spring 40. Is defined by.

On the other hand, it is possible to have a configuration in which the initial positions of the magnet 32 and the drive body 34 are determined by attracting the magnet 32 to the first yoke 29 by magnetic force, but in the case of this configuration, the magnet 32 and The initial position of the drive body 34 is greatly affected by the magnetizing direction of the magnet 32 and the shape of the first yoke 29.

Therefore, as described above, the locked portion 36c of the drive body 34 is pressed against the lock portion 53b of the lock member 43 by the urging force of the traveling spring 40 to determine the initial positions of the magnet 32 and the drive body 34. Therefore, the magnetizing direction of the magnet 32 and the shape of the first yoke 29 do not affect the initial positions of the magnet 32 and the drive body 34. As a result, high positional accuracy regarding the initial positions of the magnet 32 and the drive body 34 can be ensured, and stable performance of the drive mechanism 17 regarding the opening / closing operation of the opening / closing blade 15 can be ensured.

Further, the unlocking body 42, which is operated between the lock holding position and the unlocking position and operates the lock member 43 between the locked position and the unlocked position, and the unlocking body 42 are held at the lock holding position by being attracted to each other. An electromagnet 56 and an unlocking spring 51 that urges the unlocking body 42 toward the unlocking position are provided.

Therefore, the unlocking body 42 is held in the lock holding position by the electromagnet 56, and the unlocking body 42 is locked from the lock holding position by the urging force of the unlocking spring 51 by releasing the action of the electromagnet 56 on the unlocking body 42. It becomes possible to operate toward the release position, and the operation between the lock holding position and the unlock position of the unlock body 42 can be reliably performed by a simple mechanism.

Further, a brake lever 59 is provided to reduce the rotation speed of the drive body 34 as it approaches the rotation end in a predetermined rotation range of the drive body 34.

Therefore, as the rotation speed approaches the rotation end, the rotation of the drive body 34 is stopped, so that the sudden deceleration of the drive body 34 and the impact from the drive body 34 to each part are suppressed, and the drive body 34 is suppressed. And the durability of each part in contact with the drive body 34 can be improved.

Furthermore, the brake lever 59 is made rotatable, and the brake lever 59 is provided with a brake arm 60 pressed by the drive body 34 and an action arm 61 for pressing the unlocked body 42, and the brake arm 60 by the drive body 34 is provided. When the lock release body 42 is pressed by the action arm 61, the unlock body 42 is operated from the unlock position to the lock holding position, and the lock member 43 is operated from the unlock position to the lock position. Will be done.

Therefore, the brake lever 59 decelerates the drive body 34 and operates the unlocked body 42 from the unlocked position to the lock holding position. Therefore, the brake lever 59 decelerates the drive body 34 and operates the unlocked body 42. It is not necessary to provide a separate mechanism for each, and the structure can be simplified and the operation can be speeded up.

In the image pickup device 1 and the blade opening / closing device 11, a brake lever 59 that reduces the rotation speed of the drive body 34 when the image pickup device 1 and the blade opening / closing device 11 are rotated from the first rotation position to the second rotation position, and a brake lever 59. The lock member 43 includes a lock member 43 that locks the drive body 34 at the lock position, and an unlock spring 51 that operates the lock member 43 from the lock position to the unlocked position when the drive body 34 is unlocked. By applying the rotational force of the brake lever 59 to the 43, the lock member 43 is operated from the unlocked position to the locked position.

Therefore, in a state where the rotation speed of the drive body 34 is reduced by the brake lever 59, the rotational power of the brake lever 59 is applied to the lock member 43, and the lock member 43 is operated from the unlocked position to the locked position. .. As a result, the operation of the lock member 43 from the non-locked position to the locked position is performed during the rotation of the drive body 34, which is rotated by the urging force of the unlock spring 51, so that the power consumption is reduced. It is possible to shorten the time required for the return operation of the lock member 43 from the non-locked position to the locked position.

Further, in a state where the rotational power of the brake lever 59 is applied to the lock member 43, the rotation of the drive body 34 is regulated by the brake lever 59 and the rotation speed is reduced, so that the drive body 34 rotates with respect to the drive body 34. A force is applied from the lock member 43 to the brake lever 59 in the direction of restricting the speed.

Therefore, since the rotation of the drive body 34 is performed not only by the force applied by the brake lever 59 but also by the force applied by the lock member 43, the deceleration effect of the drive body 34 is large and the deceleration of the drive body 34 is efficient. And it can be done quickly.

Further, a magnetic drive unit 27 having a coil 31 to which a drive current is supplied and a magnet 32 that is rotated by energizing the coil 31 is provided, and is driven by at least one of the drive body 34 or the magnetic drive unit 27. The opening / closing blade 15 is operated.

Therefore, since the opening / closing blade 15 is operated in the opening / closing direction by the driving force of at least one of the magnetic drive unit 27 and the driving body 34, the degree of freedom regarding the operation control of the opening / closing blade 15 is improved, and the speed of the opening / closing blade 15 is photographed. It can be easily changed according to the above.

Furthermore, the magnetic drive unit 27 is provided with a rotor gear 33 that is rotated with the rotation of the magnet 32, and the drive body 34 is provided with a drive gear 35 that is meshed with the rotor gear 33, via the drive body 34. The opening / closing blade 15 is provided with a traveling spring 40 that applies an urging force to one side in the opening / closing direction.

Therefore, the opening / closing blade 15 can be operated in one direction in the opening / closing direction by the driving force generated by the rotation of the magnet 32 in the magnetic driving unit 27 and the driving force generated by the urging force of the traveling spring 40. It is possible to increase the traveling speed of the opening / closing blade 15 without increasing the size and power consumption of the magnet.

[1-5. Modification example]

An example of modification of the lock operation unit will be described below (see FIGS. 19 to 26). The lock operation unit 41A according to the modification shown below is different from the lock operation unit 41 described above in that the release base is mainly composed of two members. Therefore, regarding the lock operation unit 41A according to the following modification, only the parts different from the lock operation unit 41 will be described in detail, and the other parts will be described with reference numerals to the same parts in the lock operation unit 41. The same reference numerals are given and the description thereof will be omitted.

The locking operation unit 41A has an unlocking body 42A and a locking member 43 (see FIGS. 19 and 20).

The unlocking body 42A has an unlocking base 44A and a suction piece 45, and the unlocking base 44A is composed of a holding lever 71 and an unlocking arm 72. The holding lever 71 and the release arm 72 are respectively rotatable separately between the lock holding position and the unlocking position with the coaxial as a fulcrum.

The holding lever 71 has a plate-shaped base surface portion 73 that faces substantially in the vertical direction and a first support surface portion 74 that is bent upward with respect to the base surface portion 73. A part of the first support surface portion 74 is provided as a first spring receiving portion 74a protruding laterally from the base surface portion 73.

A substantially cylindrical first spring support member 75 is attached to the first spring receiving portion 74a. A return spring 76 is supported by the first spring support member 75 on the front side of the first spring receiving portion 74a. One end of the return spring 76 is engaged with the first support surface portion 74.

The suction piece 45 is fixed to the base surface portion 73 and is located on the upper surface side of one end portion in the left-right direction of the base surface portion 73.

The release arm 72 is bent rearward with respect to the second support surface portion 77 and the second support surface portion 77 facing in the front-rear direction toward the second support surface portion 77 with respect to the spring hooking surface portion 78 and the spring hooking surface portion 78. It has a pressed holding surface portion 79.

The second support surface portion 77 is positioned so as to face the first support surface portion 74 of the holding lever 71 in the front-rear direction, and the second support surface portion 77 is located in front of the first support surface portion 74. A part of the second support surface portion 77 is provided as a second spring receiving portion 77a located so as to face the first spring receiving portion 74a of the holding lever 71 in the front-rear direction. The other part of the second support surface portion 77 is projected in the direction opposite to the second spring receiving portion 77a on the side of the base surface portion 73, and this protruding portion is provided as the release receiving portion 77b. The second support surface portion 77 is provided with a regulating protrusion 77c protruding downward.

The other end of the return spring 76 is engaged with the spring hooking surface 78. Therefore, both ends of the return spring 76 are engaged with the first support surface portion 74 and the spring hooking surface portion 78, respectively, and the return spring 76 brings the base surface portion 73 and the pressing surface portion 79 closer to the holding lever 71 and the release arm 72. Is given the urging power of. As a result, the pressing surface portion 79 is abutted against the base surface portion 73 in a state in which the holding lever 71 and the release arm 72 are not subjected to a force in a direction opposite to the urging force of the return spring 76.

A substantially cylindrical second spring support member 80 is attached to the second spring receiving portion 77a. The second spring support member 80 and the first spring support member 75 are coupled between the first spring receiving portion 74a and the second spring receiving portion 77a.

The unlocking spring 81 is supported on the rear side of the second spring receiving portion 77a on the second spring supporting member 80. The unlocking spring 81 is, for example, a torsion coil spring, one end of which is engaged with a spring support shaft 21 attached to the arrangement base 20, and the other end of which is engaged with a second support surface portion 77. The spring force of the unlock spring 81 is larger than the spring force of the return spring 76.

The lock member 43 is orthogonal to the supported plate portion 53 and the supported plate portion 53 located on the front side of the release arm 72 facing the second support surface portion 77, and the base surface portion 73 is located on the lower side of the release arm 72. It has a pressed plate portion 54 positioned so as to face the front end portion.

A substantially cylindrical third spring support member 82 is attached to the supported plate portion 53 of the lock member 43.

The lock spring 55 is supported on the front side of the second spring receiving portion 77a by the third spring supporting member 82. The spring force of the lock spring 55 is smaller than the spring force of the unlock spring 81. One end of the lock spring 55 is engaged with the spring support shaft 21 attached to the arrangement base 20, and the other end is engaged with the supported plate portion 53 of the lock member 43.

In the lock operation unit 41A, the lock shaft 24 attached to the arrangement base 20 is inserted into the shaft insertion hole 53a of the lock member 43, the first spring support member 75, the second spring support member 80, and the third spring support member 82. By being supported by the lock shaft 24, the holding lever 71, the release arm 72, and the lock member 43 can be rotated separately with the lock shaft 24 as a fulcrum.

In a state where the lock operation unit 41A is rotatable around the lock shaft 24 as a fulcrum, the release arm 72 is urged by the lock release spring 81 in a direction in which the pressing surface portion 79 contacts the base surface portion 73 of the holding lever 71, and the holding lever 72. The 71 is urged in the same direction as the release arm 72 by applying the urging force of the unlock spring 81 via the release arm 72. Therefore, the holding lever 71 and the release arm 72 are integrally rotatable in the direction in which the urging force of the lock release spring 81 is applied. Further, the holding lever 71 is urged by the return spring 76 in the direction in which the base surface portion 73 approaches the holding surface portion 79 of the release arm 72, and the urging direction of the holding lever 71 by the return spring 76 is the lock release spring 81 with respect to the holding lever 71. It is in the opposite direction to the urging direction.

The lock member 43 is urged by the lock spring 55 in a direction in which the pressed plate portion 54 approaches the base surface portion 73. Therefore, the urging directions of the lock release spring 81 and the lock spring 55 are opposite to each other in the rotation direction of the lock operation unit 41A, and a force other than the urging force is applied to the lock release body 42A and the lock member 43 in the rotation direction. In the non-locking state, the unlocking body 42A and the locking member 43 are held in a state where the pressed plate portion 54 of the locking member 43 is pressed against the regulating protrusion 77c of the unlocking body 42A.

[1-6. Operation of the blade switchgear using the lock operation unit according to the modified example]

The operation of the blade opening / closing device 11 in which the lock operation unit 41A according to the modified example is used will be described below (see FIGS. 21 to 26).

First, the initial state of each part of the drive mechanism 17 will be described (see FIG. 21).

suction portions

57a and 57a. Therefore, both the holding lever 71 and the releasing arm 72 of the unlocking body 42A are held at the locking holding position.

At this time, the lock member 43 is given an urging force in the direction in which the pressed portion plate 54 approaches the base surface portion 73 by the lock spring 55, and the pressed plate portion 54 is pressed against the regulation protrusion 77c of the release arm 72. The lock member 43 is held in the locked position.

At this time, the image sensor 12 is in a closed state (non-exposure state) in which light is not incident by the electronic curtain (front curtain).

In the initial state, the brake lever 59 is held at the deceleration start position, the brake arm 60 is separated from the drive lever 36 of the drive body 34, and the pressing shaft 62 attached to the action arm 61 is the second release arm 72. It is separated from the release receiving portion 77b of the support surface portion 77.

In the above-mentioned initial state, when the electromagnet 56 is energized, the opening / closing operation of the opening / closing blade 15 is started (see FIG. 22). The control of the electronic curtain is also started at the same time as the opening / closing operation of the opening / closing blade 15.

When the electromagnet 56 is energized, the operation of the opening / closing blade 15 from the open position to the closed position is started. When the operation from the open position to the closed position of the opening / closing blade 15 is performed, the electronic curtain is controlled according to the operating speed of the opening / closing blade 15 in a state where a slit is formed between the electronic curtain and the opening / closing blade 15. Light is incident on the image pickup device 12 through the formed slit to perform exposure.

suction parts

57a and 57a. Therefore, the holding lever 71 and the release arm 72 are integrally rotated by the urging force of the lock release spring 81 from the lock holding position to the lock release position.

When the holding lever 71 and the release arm 72 are rotated from the lock holding position to the lock release position, the pressure plate portion 54 of the lock member 43 is pressed by the regulation protrusion 77c of the release arm 72, and the drive body 34 The engagement of the lock member 43 of the locked portion 36c with respect to the lock portion 53b is released. Therefore, the lock member 43 is integrally rotated with the unlocking body 42A composed of the holding lever 71 and the unlocking arm 72 against the urging force of the lock spring 55 from the locked position to the unlocked position.

The holding lever 71 and the release arm 72 that have been rotated toward the unlocked position rotate in contact with a rotation restricting portion (not shown) that is partially attached to the arrangement base 20 or formed on the arrangement base 20. Is stopped and held in the unlocked position. At the same time, the lock member 43 that has been rotated integrally with the unlocked body 42A toward the unlocked position is stopped rotating along with the unlocked body 42A and is held in the unlocked position.

Subsequently, the coil 31 is energized, and the opening / closing blade 15 is further operated toward the closed position (see FIG. 23).

At this time, the pressing shaft 62 is brought into contact with the release receiving portion 77b of the release arm 72 by the rotation of the brake lever 59. When the pressing shaft 62 of the brake lever 59 comes into contact with the release receiving portion 77b of the release arm 72, the energization of the electromagnet 56 is stopped. Therefore, the magnetic force is generated again in the magnetic force generating unit 57.

Further, the magnetic drive unit 27 and the drive body 34 are synchronously rotated in opposite directions, the brake lever 59 is pressed by the connecting shaft 38 and continuously rotated, and the brake arm 60 is attached to the stopper 26 attached to the arrangement base 20. The rotation of the brake lever 59 is stopped in contact with the brake lever 59 (see FIG. 24).

When the brake lever 59 is pressed by the connecting shaft 38 and rotated, the release receiving portion 77b of the release arm 72 is pressed by the pressing shaft 62 of the brake lever 59, and the release arm 72 is opposed to the urging force of the lock release spring 81. It is rotated from the unlocked position to the locked holding position. At this time, since the holding lever 71 and the release arm 72 are individually rotatable about the coaxial as a fulcrum, the release arm 72 is pressed when the release receiving portion 77b of the release arm 72 is pressed by the pressing shaft 62 of the brake lever 59. Although it is rotated to the lock holding position, the holding lever 71 is not rotated with the release arm 72. Since the lock member 43 is urged in the direction in which the pressed plate portion 54 is pressed against the regulation protrusion 77c of the release arm 72 by the urging force of the lock spring 55, the lock member 43 is rotated along with the release arm 72 by the urging force of the lock spring 55. Be moved.

When the release receiving portion 77b is pressed by the pressing shaft 62 of the brake lever 59 and the release arm 72 is rotated toward the lock holding position against the urging force of the lock release spring 81, the release arm 72 is separated from the holding lever 71. Therefore, the urging force of the return spring 76 whose both ends are engaged with the holding lever 71 and the release arm 72 increases. Therefore, the holding lever 71 is rotated toward the lock holding position by the urging force of the return spring 76 after the rotation of the release arm 72 (see FIG. 25).

At this time, the spring force of the return spring 76 is smaller than the spring force of the lock release spring 81, and the lock member 43 is slower than the rotation speed of the release arm 72 which is pressed and rotated by the pressing shaft 62 of the brake lever 59. Is rotated to the lock holding position.

suction parts

57a and 57a, the unlocking body 42A is rotated to the lock holding position, and the lock member 43 returns to the initial state and the lock member 43 is in the lock position. It is rotated to return to the initial state.

When the operation from the open position to the closed position of the opening / closing blade 15 is completed, the operation from the closed position to the open position of the opening / closing blade 15 is subsequently started. When the operation of the opening / closing blade 15 from the closed position to the open position is started, the image sensor 12 is put into a closed state (non-exposure state) in which light is not incident by the electronic curtain.

The operation of the opening / closing blade 15 from the closed position to the open position is started by energizing the coil 31 of the magnetic drive unit 27 in the opposite direction to the previous one (see FIG. 26).

When the drive body 34 is rotated from the second rotation end to the first rotation end, the connecting shaft 38 of the drive body 34 is separated from the brake arm 60, but the return shaft 39 of the drive body 34 brakes. The arm 60 is contacted from the direction opposite to the contact direction of the connecting shaft 38, and the brake lever 59 is rotated from the rotation stop position to the deceleration start position by the return shaft 39 to return to the initial state. The brake lever 59 is rotated from the rotation stop position to the deceleration start position, so that the pressing shaft 62 is separated from the release receiving portion 77b of the release arm 72.

As described above, in the blade opening / closing device 11 and the imaging device 1 in which the locking operation unit 41A is used, the unlocking body 42A is pressed by the holding lever 71 and the brake lever 59 that are attracted to the electromagnet 56. 72, and the holding lever 71 and the release arm 72 are individually rotatable.

Therefore, the rotation speed of the holding lever 71 can be set to a speed different from the rotation speed of the release arm 72 pressed by the brake lever 59, and the rotation speed of the holding lever 71 at the time of attraction by the electromagnet 56 can be released. By making the rotation speed slower than the rotation speed of the arm 72, the impact applied to the electromagnet 56 when the unlocking body 42A is attracted by the electromagnet 56 can be reduced, and the high performance of the electromagnet 56 can be maintained.

In particular, in the electromagnet 56, the

suction portions

57a and 57a are often formed of a material having low hardness, and by reducing the impact applied to the electromagnet 56 by the unlocking body 42A, the

suction portions

57a and 57a are worn. It is possible to secure good characteristics by improving the durability of the electromagnet 56.

Further, the release arm 72 is urged by the unlock spring 81, and a return spring 76 is provided to urge the holding lever 71 in a direction approaching the release arm 72, and the urging force of the return spring 76 is the urging force of the unlock spring 81. It has been made smaller.

Therefore, the holding lever 71 is rotated in the direction of approaching the releasing arm 72 by the return spring 76 having an urging force smaller than the urging force of the unlocking spring 81. The rotation speed can be made slower than the rotation speed of the release arm 72, and the impact of the unlocking body 42A on the electromagnet 56 can be reliably reduced by a simple configuration.

<2. Electrical configuration>
[2-1. Electrical configuration example of image pickup device]

Subsequently, an example of the electrical configuration of the image pickup apparatus 1 will be described.
FIG. 27 is a block diagram showing an example of an electrical internal configuration of the image pickup apparatus 1.
As shown in the figure, the image sensor 1 includes an optical block 90, an image sensor 12, a camera signal processing unit 91, an image processing unit 92, a display unit 93, a recording control unit 94, a control unit 95, a driver unit 96, and an operation unit 97. I have.
Although the battery 98, which is the operating power source of the image pickup device 1, is shown in the figure, the battery 98 may be detachable from the image pickup device 1. The battery 98 is used as an operating power source for each necessary part of the image pickup apparatus 1.

The optical block 90 includes an optical system 10 including a lens such as a cover lens, a zoom lens, and a focus lens, an aperture mechanism, and the like, and a blade opening / closing device (blade opening / closing unit) 11.
Light from the subject (incident light) is guided by the optical system 10, and the incident light is focused on the image pickup surface of the image pickup device 12 through the opening 13a of the blade opening / closing device 11.
Further, the blade opening / closing device 11 is provided with an electromagnet 56 and a magnetic drive unit (motor) 27. As understood from the above description, the electromagnet 56 functions as an electronic device for controlling the lock / unlock of the drive body 34, and when the electromagnet 56 is energized, the locked state of the drive body 34 is changed. After being released, the driving body 34 is rotated by the urging force of the traveling spring 40, and the traveling operation of the opening / closing blade 15 from the open position to the closed position is started.

The image sensor 12 photoelectrically converts the light incident through the optical block 90 to obtain an electric signal according to the amount of received light. For the image sensor 12, for example, a CCD (Charge Coupled Device) sensor, a CMOS (Complementary Metal-Oxide Semiconductor) sensor, or the like is used.
The image sensor 12 executes, for example, CDS (Correlated Double Sampling) processing, AGC (Automatic Gain Control) processing, or the like on the electric signal obtained by photoelectric conversion, and further performs A / D (Analog / Digital) conversion processing. Then, the captured image signal as digital data is output to the camera signal processing unit 91 in the subsequent stage.

The camera signal processing unit 91 is configured as an image processing processor by, for example, a DSP (Digital Signal Processor) or the like. The camera signal processing unit 91 performs various signal processing on the digital signal (captured image signal) from the image sensor 12. For example, various signal processing such as noise removal, image quality correction, and conversion to a luminance / color difference signal is performed.

The image processing unit 92 performs compression coding / decompression decoding processing of an image signal based on a predetermined image data format, conversion processing of data specifications such as resolution, and the like.

The recording control unit 94 performs recording / reproduction on a recording medium using, for example, a non-volatile memory. The recording control unit 94 performs a process of recording an image file such as moving image data or still image data, a thumbnail image, or the like on a recording medium, for example.
The actual form of the recording control unit 94 can be considered in various ways. For example, the recording control unit 94 may be configured as a flash memory built in the image pickup device 1 and a write / read circuit thereof, or a recording medium that can be attached to and detached from the image pickup device 1, such as a memory card (portable flash memory, etc.). ) May be in the form of a card recording / playback unit that performs recording / playback access. Further, as a form built in the image pickup apparatus 1, it may be realized as an SSD (Solid State Drive), an HDD (Hard Disk Drive), or the like.

The display unit 93 displays various information to the user, and is realized by, for example, a display device such as a liquid crystal panel (LCD: Liquid Crystal Display) or an organic EL (Electro-Luminescence) display as the display 7 described above.
The display unit 93 displays various information on the display screen based on the instruction of the control unit 95. For example, the display unit 93 displays a reproduced image of the image data read from the recording medium by the recording control unit 94.
Further, the display unit 93 is supplied with image data of an captured image whose resolution has been converted for display by, for example, the image processing unit 92, and the display unit 93 is based on the image data of the captured image in response to an instruction from the control unit 95. May be displayed. As a result, a so-called through image (subject monitoring image), which is an captured image during composition confirmation, is displayed.
Further, the display unit 93 displays various operation menus, icons, messages, etc., that is, as a GUI (Graphical User Interface) on the screen based on the instruction of the control unit 95.

The operation unit 97 collectively shows input devices for the user to perform various operation inputs. Specifically, the operation unit 97 includes various controls such as a shutter button 4, a zoom switch 5, a power button 6, and an operation unit 8 provided in the housing of the image pickup device 1, a dial, a touch panel, a touch pad, and the like. Various controls are shown.
The operation unit 97 detects the user's operation, and a signal corresponding to the input operation is sent to the control unit 95.

The driver unit 96 comprehensively represents a driver for driving various electronic devices such as actuators provided in the optical block 90. The driver unit 96 is provided with a motor driver for the zoom lens drive motor in the optical system 10, a motor driver for the focus lens drive motor, a motor driver for the motor of the aperture mechanism, and the like. Further, particularly in the case of the present embodiment, the driver unit 96 is provided with a shutter motor driver unit 99 for driving the magnetic drive unit 27 as a shutter motor and a spring driver unit 100 for driving the electromagnet 56. ..
Each driver in the driver unit 96 drives a target electronic device in response to an instruction from the control unit 95.

The control unit 95 includes, for example, a microcomputer (arithmetic processing device) equipped with a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and is a program stored in the ROM. By executing the above, the entire image pickup apparatus 1 is controlled.
For example, the control unit 95 controls the shutter speed (exposure time) of the image sensor 12, instructs the camera signal processing unit 91 to process various signals, performs an imaging operation and a recording operation according to a user's operation, and reproduces a recorded image file. It controls the recording control unit 94 for operation. Further, the control unit 95 controls the operation of each necessary unit regarding the operation of the zoom lens, focus lens, aperture mechanism, etc., user interface operation, etc. in the optical system 10.

Further, in particular, the control unit 95 in the present embodiment gives an instruction to the shutter motor driver unit 99 to control the operation of the magnetic drive unit 27, and also gives an instruction to the spring driver unit 100 to control the operation of the electromagnet 56. To do.
In the above-mentioned shutter speed control, the control unit 95 controls the charge reset timing of the image sensor 12 (travel control of the electronic front curtain) and the opening / closing blade 15 (rear curtain) by controlling the operation of the magnetic drive unit 27 and the electromagnet 56. Run control.

Further, the control unit 95 in the present embodiment can set each of the following items based on the user's operation.

-Running speed of opening / closing blade 15: "curtain speed"
-Continuous shooting speed (number of acquisitions of captured image data as a still image per unit time: for example, frame / sec): "frame speed"
-Flash (strobe) 3 ON / OFF (flash / non-flash)
・ Strobe synchronization speed ・ Silent mode ON / OFF

Here, the traveling speed of the opening / closing blade 15 is hereinafter referred to as "curtain speed" from the viewpoint of the traveling speed of the rear curtain. The continuous shooting speed is hereinafter referred to as "frame speed". Furthermore, "flash" may be referred to as "strobe".
Of the above items, "AUTO" (automatic selection) can also be specified for the curtain speed and frame speed items. When this "AUTO" is specified, the control unit 95 sets the optimum value (parameter).
Further, in the above item, the silent mode is a mode related to the sound generated by the traveling of the opening / closing blade 15 in the blade opening / closing device 11. When the silent mode is ON, the opening / closing blade 15 with improved quietness is started to run.

Here, in the present embodiment, a large-capacity capacitor is used as the drive power source of the magnetic drive unit 27 in order to increase the curtain speed.
FIG. 28 shows a circuit configuration example of the drive system of the magnetic drive unit 27 in this embodiment.
As shown in the figure, the output voltage of the battery 98 is supplied to the shutter motor driver unit 99.
The shutter motor driver unit 99 includes a DC / DC converter 101, a capacitor 102, and a driver IC (Integrated Circuit) 103.
In this example, the DC / DC converter 101 is configured as a step-up switching regulator, boosts the output voltage from the battery 98, and outputs the voltage.
The capacitor 102 is charged by receiving the output voltage of the DC / DC converter 101, and the voltage between both terminals of the capacitor 102 is supplied as the power supply voltage of the driver IC 103.

The driver IC 103 is configured to include, for example, an H-bridge circuit consisting of four transistors, and supplies a drive current corresponding to the power supply voltage supplied from the capacitor 102 to the magnetic drive unit 27. At this time, the driver IC 103 supplies the drive current to the magnetic drive unit 27 based on the instruction from the control unit 95. Further, the driver IC 103 causes a drive current in the direction (polarity) instructed by the control unit 95 to flow through the coil 31 (not shown in FIG. 28) of the magnetic drive unit 27 by the above H-bridge circuit.

[2-2. About driving mode]

Here, the imaging device 1 of the present embodiment is a hybrid in which both the magnetic drive unit 27 and the traveling spring 40 transmit traveling power to the opening / closing blade 15 as the traveling mode of the opening / closing blade 15 in the blade opening / closing device 11. It has a traveling mode and a spring traveling mode in which only the traveling spring 40 of the magnetic drive unit 27 and the traveling spring 40 transmits traveling power to the opening / closing blade 15.
The control unit 95 switches the traveling mode of the opening / closing blade 15 between the hybrid traveling mode and the spring traveling mode.

FIG. 29 is a diagram for explaining the operation for each traveling mode, FIG. 29A is an operation explanatory diagram in the hybrid traveling mode, and FIG. 29B is an operation explanatory diagram in the spring traveling mode.
First, in any of the traveling modes, when the release is started in response to the operation of the shutter button 4, the traveling of the front curtain as the electronic curtain is started, and the exposure area is gradually expanded in the image sensor 12. At the start of release, it is assumed that the capacitor 102 has been charged.
Then, after the start of the traveling of the front curtain, the traveling of the opening / closing blade 15 as the rear curtain (traveling to the closed position described above) is started at a timing corresponding to the set value of the shutter speed.

In the hybrid traveling mode shown in FIG. 29A, since the magnetic drive unit 27 is used as a power source for traveling the opening / closing blade 15 to the closed position, the capacitor 102 is discharged when the opening / closing blade 15 starts traveling. When the traveling of the opening / closing blade 15 is completed (that is, the closing position is reached as described above), the driving of the magnetic driving unit 27 is stopped, the discharging of the capacitor 102 is stopped, and the charging of the capacitor 102 is started. This charging is performed to store the electric power required for winding up the traveling spring 40 (in this example, the opening / closing blade 15 is also returned to the open position).
When the charging is completed, the driving of the magnetic driving unit 27 for winding up the traveling spring 40 is started, so that the capacitor 102 is discharged again. When the winding of the traveling spring 40 is completed (that is, the opening / closing blade 15 reaches the open position), the capacitor 102 is charged again. This recharging is performed so that the magnetic drive unit 27 stores electric power for moving the opening / closing blade 15 from the open position to the closed position at the next release.
When this recharging is completed, the next release can be started.

On the other hand, in the spring traveling mode shown in FIG. 29B, the opening / closing blade 15 travels to the closed position by the power of the traveling spring 40, and the magnetic drive unit 27 is not used. Therefore, the capacitor 102 is not discharged even when the opening / closing blade 15 starts running. In this case, the capacitor 102 is discharged when the traveling spring 40 is wound up after the traveling to the closed position of the opening / closing blade 15 is completed. Then, when the winding of the traveling spring 40 is completed, charging of the capacitor 102 is started, and when the charging is completed, the next release can be started.

In the hybrid traveling mode, since the powers of both the traveling spring 40 and the magnetic drive unit 27 are used for traveling the opening / closing blade 15, the curtain speed can be increased.
On the other hand, in the spring driving mode, the number of times the capacitor 102 is charged per release (that is, per frame of the captured image) is reduced (in other words, the charging time) as compared with the hybrid driving mode, so that the next release can be started. It is possible to reduce the waiting time until it becomes possible and to increase the frame speed (see the arrow "X" in FIG. 29B).

In the present embodiment, by switching the driving mode between the hybrid driving mode and the spring driving mode, one imaging device having a contradictory relationship of imaging with an increased curtain speed and imaging with an increased frame speed is performed. It can be realized by the image pickup device of.

Here, in the hybrid traveling mode, not only the power of the traveling spring 40 but also the power of the magnetic drive unit 27 is used. In view of this point, the hybrid driving mode and the spring driving mode can also be defined as follows. That is, the hybrid travel mode is a travel mode in which the power consumption of the magnetic drive unit 27 is high, and the spring travel mode is a travel mode in which the power consumption of the magnetic drive unit 27 is low. Briefly, the hybrid traveling mode and the spring traveling mode are traveling modes in which the power consumption of the magnetic drive unit 27 is different.

Further, if not only the power of the traveling spring 40 but also the power of the magnetic drive unit 27 is used, the curtain speed can be increased. From this point of view, the hybrid traveling mode can be defined as a traveling mode in which the traveling speed of the opening / closing blade 15 is high, and the spring traveling mode can be defined as a traveling mode in which the traveling speed is slow (that is, the hybrid traveling mode and the spring). The traveling mode is a traveling mode in which the traveling speeds of the opening / closing blades 15 are different).

Further, in the above, the spring traveling mode is a traveling mode in which only the traveling spring 40 transmits the traveling power to the opening / closing blade 15, but in the spring traveling mode, the magnetic drive unit 27 slightly reduces the power of the traveling spring 40. It may also include the case of assisting. In view of this point, the hybrid driving mode and the spring driving mode can also be defined as follows. That is, the hybrid traveling mode is a mode in which both the magnetic drive unit 27 and the traveling spring 40 transmit the traveling power of the opening / closing blade 15, and the spring traveling mode is a mode in which the traveling spring transmits the traveling power. It is defined that the power consumption of the drive unit 27 is lower than that of the hybrid driving mode.
As an example in which the magnetic drive unit 27 slightly assists in the spring travel mode, it is conceivable that the magnetic drive unit 27 assists the traveling spring 40 so as to absorb changes in torque with time and individual differences.

[2-3. Control example I]

It is conceivable that the above-mentioned switching of the traveling mode is performed according to the setting of the strobe tuning speed.
The flowchart of FIG. 30 shows a process for switching the traveling mode according to the strobe tuning speed. In this example, the process shown in FIG. 30 is executed by the control unit 95 based on the program stored in the ROM described above.

First, in step ST1, the control unit 95 waits until the setting of the strobe tuning speed is changed. Specifically, in this example, the process waits until the strobe tuning speed setting value is changed based on the user's operation.
When the setting of the strobe tuning speed is changed, the control unit 95 determines in step ST2 whether or not the strobe is ON, that is, whether or not a value indicating ON is set as the ON / OFF setting value of the flash 3.
If the strobe is not ON, the control unit 95 ends a series of processes shown in FIG. That is, if the strobe is OFF, it is not necessary to execute the processes after step ST3 described later, so the control unit 95 finishes the process shown in FIG.

On the other hand, if the strobe is ON, the control unit 95 proceeds to step ST3 and determines whether or not the set value of the strobe tuning speed exceeds the threshold value THs. As the threshold value THs, a value equal to or lower than the maximum shutter speed that can be realized in the spring running mode is set.
If the set value of the strobe tuning speed does not exceed the threshold value THs, the control unit 95 proceeds to step ST4 to select the spring traveling mode, and ends the series of processes shown in FIG.
On the other hand, if the set value of the strobe tuning speed exceeds the threshold value THs, the control unit 95 proceeds to step ST5 to select the hybrid traveling mode, and ends the series of processes shown in FIG.

By the above processing, when the strobe tuning speed is equal to or less than the threshold value THs, the running mode is switched to the running mode which is advantageous for the frame speed as the spring running mode, and when the frame speed is set to the above-mentioned "AUTO". Is capable of setting the fastest frame speed according to the set value of the strobe tuning speed.
On the other hand, when the strobe tuning speed exceeds the threshold THs, the driving mode is switched to a driving mode that is advantageous to the curtain speed as the hybrid driving mode, and imaging with a high strobe synchronization speed that cannot be realized in the spring driving mode is realized. It is possible to do.

By the processing as the control example I described above, with respect to the imaging accompanied by the strobe light emission, the imaging with a high strobe synchronization speed and the imaging with a high continuous shooting speed can be compatible with each other with one imaging device.

[2-4. Control example II]

Next, control example II will be described.
Control example II relates to arbitration of three types of parameters: curtain speed, frame speed, and shutter speed.

First, the prerequisites in Control Example II will be described.
In Control Example II, Hi (High) / Low are defined as shown in FIG. 31 for the shutter speed, the curtain speed, and the frame speed, respectively.
As shown in the figure, the shutter speed Hi / Low is divided by a predetermined threshold value. Specifically, in this example, the threshold value is the maximum strobe tuning speed. The maximum strobe tuning speed referred to here means the maximum strobe tuning speed that can be realized in the hybrid driving mode. For example, if the strobe tuning speed = 1/250 is the limit in the spring running mode, and if it is possible to realize a strobe tuning speed up to 1/500 in the hybrid running mode, 1/500 is the highest strobe tuning. Corresponds to speed.
In the following, the shutter speed may be abbreviated as "SS".

The curtain speed and the frame speed of Hi / Low are classified according to whether or not the shutter drive can be realized by spring drive (that is, spring drive mode) or hybrid drive (hybrid drive mode). Specifically, regarding the curtain speed, the range that can be realized by spring drive is Low, and the range that can be realized by hybrid drive is Hi.
On the other hand, regarding the frame speed, the range that can be realized by hybrid drive is Low, and the range that can be realized by spring drive is Hi.
For the curtain speed, two values, Hi and Low, can be set as parameters.
As for the frame speed, it is possible to set a multi-step value such as 1 frame / second to 8 frames / second as a parameter, and Hi / Low is classified from the set value.
As described above, in the present embodiment, it is possible to set "AUTO" for the curtain speed and the frame speed.

FIG. 32 shows a combination of settings for each function of shutter speed (SS), frame speed, and curtain speed.
As the combination, eight combinations (1) to (8) in the figure can be considered, the shutter speeds of (1) to (4) are all Hi, and the shutter speeds of (5) to (8) are all Low. It is a combination.
It is not necessary to consider the combination of (1) and (5) in which both the frame speed and the curtain speed are Hi. Therefore, in arbitrating the parameters of shutter speed, frame speed, and curtain speed, the combination of (2) to (4) and (6) to (8) may be considered.

Here, in the control example II, the control unit 95 is in a state in which the current state should give priority to the curtain speed or a state in which the frame speed should be prioritized, depending on the settings of the shutter speed, the frame speed, and the curtain speed Hi / Low. Mode recognition is performed to manage the status. That is, the curtain speed priority mode / frame speed priority mode is recognized.
Specifically, the control unit 95 recognizes the curtain speed priority mode and the frame speed priority mode as follows.

・ When the user changes the curtain speed to Hi => Recognizes as the curtain speed priority mode ・ When the user changes the curtain speed to Low => Recognizes as the frame speed priority mode ・ The user changes the frame speed to Low => Recognized as curtain speed priority mode-When the user changes the SS setting to Hi => Recognized as curtain speed priority mode-When the user changes the SS setting to Low => Recognized as frame speed priority mode

In Control Example II, the control unit 95 recognizes the curtain speed priority mode and the frame speed priority mode when any of the curtain speed, frame speed, and shutter speed settings is changed by the user's operation. Then, the control unit 95 arbitrates each parameter of the curtain speed, the frame speed, and the shutter speed based on the recognition result. In this example, in the arbitration, the strobe ON / OFF and the "AUTO" setting are also taken into consideration.

A specific processing example will be described with reference to the flowcharts of FIGS. 33 to 35.
First, in FIG. 33, the control unit 95 waits until any of the SS, curtain speed, and frame speed settings is changed in step S101, and when any of these settings is changed, the strobe is turned on in step S102. Judge whether or not. When the strobe is not ON, the control unit 95 executes the process shown in FIG. 34, and when the strobe is ON, executes the process shown in FIG. 35.

First, the process of FIG. 34 when the strobe is not ON will be described.
In step S103, the control unit 95 determines whether the curtain speed priority mode or the frame speed priority mode is used. That is, it is determined whether the curtain speed priority mode or the frame speed priority mode is recognized according to the setting change detected in step S101.
As can be understood from the above explanation, the case where the curtain speed priority mode is determined is the case where the curtain speed is changed to Hi, the frame speed is set to Low, and the SS is set to Low, and the frame speed is prioritized. The case where the mode is determined is the case where the curtain speed is set to Low, the frame speed is set to Hi, and the SS is set to Low.

When it is determined that the curtain speed priority mode is set, the control unit 95 determines in step S104 whether or not the curtain speed is Hi. If the curtain speed is Hi, the control unit 95 proceeds to step S106 and determines whether or not the frame speed setting is "AUTO". If the frame speed setting is "AUTO", the control unit 95 proceeds to step S107 to set the frame speed to the maximum speed setting of Low, and ends a series of processes continuing from FIG. 33.
On the other hand, when it is determined that the frame speed setting is not "AUTO", the control unit 95 proceeds to step S108 to make the frame speed selectable within the range of Low, and ends a series of processes continuing from FIG. 33.

If it is determined in step S104 that the curtain speed is not Hi, the control unit 95 proceeds to step S105 to determine whether SS is Hi or not. If the SS is Hi, the control unit 95 proceeds to step S106 described above. That is, if the frame speed setting is "AUTO", the frame speed is set to the maximum speed of Low, and if it is not "AUTO", the frame speed can be set within the range of Low.

On the other hand, if SS is not Hi in step S105, the control unit 95 proceeds to step S109, sets the frame speed to Low, and ends a series of processes continuing from FIG. 33. Here, the case where the SS is determined not to be Hi in step S105 is the case where the setting change to set the frame speed to Low is performed as the setting change detected in step S101. Therefore, in step S109, the frame speed is changed. Is set to Low.

Further, in step S103, when the frame speed priority mode is determined, the control unit 95 proceeds to step S110 to determine whether or not the frame speed is Hi, and if the frame speed is Hi, the curtain speed is Low in step S111. The SS makes Hi and Low selectable, and finishes a series of processes following from FIG. 33.

For confirmation, the SS can be adjusted by the time difference between the electronic front curtain and the opening / closing blade 15's running start timing, and the SS can be Hi even if the curtain speed is Low. it can.

On the other hand, if it is determined in step S110 that the frame speed is not Hi, the control unit 95 determines in step S112 whether or not the curtain speed setting is "AUTO". If the curtain speed setting is "AUTO", the control unit 95 proceeds to step S113 to set the curtain speed to Hi and SS to Low, and ends a series of processes continuing from FIG. 33.
Here, the case where the curtain speed setting is determined to be "AUTO" in step S112 is the case where the setting change to set SS to Low is performed as the setting change detected in step S101. Therefore, step S113 Then SS is set to Low.

Further, when it is determined in step S112 that the curtain speed setting is not "AUTO", the control unit 95 proceeds to step S114 to select Hi or Low for the curtain speed, and Hi or Low can be selected for SS, as shown in FIG. 33. The following series of processing is completed.
The case where the curtain speed setting is determined not to be "AUTO" in step S112 is the case where the setting change to set the curtain speed to Low or SS to Low is performed as the setting change detected in step S101. Therefore. In step S114, Hi and Low can be selected for the curtain speed and SS.
At this time, if the setting change is a setting change in which the curtain speed is Low, the curtain speed is set to Low, and if the setting change is a setting change in which SS is Low, SS is set to Low. ..

Here, with respect to the processes of steps S113 and S114, it is possible to include a process of determining whether or not the above-mentioned silent mode is ON, and setting the curtain speed to Low if the silent mode is ON.

Subsequently, the process of FIG. 35 corresponding to the strobe ON will be described.
First, the control unit 95 sets the strobe tuning speed in step S119. That is, since the strobe is ON and slit exposure is not possible, SS is set to the strobe synchronization speed.

In the following step S120, the control unit 95 determines whether the curtain speed priority mode or the frame speed priority mode is used.
In the curtain speed priority mode, the control unit 95 proceeds to step S121 to determine whether or not the curtain speed is Hi, and if the curtain speed is Hi, in step S122, whether or not the frame speed setting is "AUTO". judge. If the frame speed setting is "AUTO", the control unit 95 proceeds to step S123, sets the frame speed to the maximum speed setting of Low, and ends a series of processes continuing from FIG. 33.
On the other hand, if the frame speed setting is not "AUTO", the control unit 95 makes it possible to select the frame speed within the range of Low in step S124, and ends a series of processes continuing from FIG. 33.

If it is determined in step S121 that the curtain speed is not Hi, the control unit 95 proceeds to step S125, determines whether or not the frame speed setting is "AUTO", and if the frame speed setting is "AUTO", the step. Proceeding to S126, the frame speed is set to Hi, and a series of processes continuing from FIG. 33 is completed.
On the other hand, if the frame speed setting is not "AUTO" in step S125, the control unit 95 proceeds to step S127 to enable the frame speed to be selected from Hi and Low, and ends a series of processes continuing from FIG. 33.
The case where the frame speed setting is determined not to be "AUTO" in step S125 is the case where the frame speed is changed to Hi or SS is changed to Hi as the setting change detected in step S101. Therefore, in step S127, Hi and Low can be selected for the frame speed. If the setting change is a setting change in which the frame speed is Hi, the frame speed is set to Hi.

Subsequently, in step S120, when the frame speed priority mode is determined, the control unit 95 proceeds to step S128 to determine whether or not the frame speed is Hi, and if the frame speed is Hi, the curtain speed is set in step S129. It is set to Low, and a series of processes continuing from FIG. 33 is completed.
On the other hand, if the frame speed is not Hi in step S128, the control unit 95 proceeds to step S130 to determine whether or not the curtain speed setting is "AUTO", and if the curtain speed setting is not "AUTO", the step The curtain speed is set to Hi in S131, and a series of processes following from FIG. 33 is completed.
The case where the curtain speed setting is determined to be "AUTO" in step S130 is the case where the setting change to set SS to Low is performed as the setting change detected in step S101 (that is, the curtain speed is set to Low). If the setting was not changed). In step S131, the curtain speed is set to "AUTO", so the curtain speed is set to Hi.

If the curtain speed setting is not "AUTO" in step S130, the control unit 95 proceeds to step S132 to enable the curtain speed to be selected from Hi and Low, and ends a series of processes continuing from FIG. 33.
The case where the curtain speed setting is determined not to be "AUTO" in step S130 is the case where the setting change to set the curtain speed to Low or SS to Low is performed as the setting change detected in step S101. Therefore, in step S132, Hi and Low can be selected for the curtain speed.
At this time, if the setting change is a setting change in which the curtain speed is Low, the curtain speed is set to Low.

Here, with respect to the processes of steps S131 and S132, it is possible to include a process of determining whether or not the above-mentioned silent mode is ON, and setting the curtain speed to Low if the silent mode is ON.

As a result of arbitrating the three parameters of shutter speed, curtain speed, and frame speed as described above, the control unit 95 selects the hybrid driving mode in the case where the curtain speed = Hi, and the frame speed = Hi. In this case, the spring running mode is selected.
As a specific case, for example, when the curtain speed is determined to be Hi in steps S104 and S121, the hybrid traveling mode is selected. Further, for example, when the curtain speed is set to Hi in steps S113 and S131, the hybrid traveling mode is also selected.
Alternatively, for example, when the frame speed is determined to be Hi in steps S110 and S128, the spring travel mode is selected, and when the frame speed is set to Hi in step S126, for example, the spring travel mode is selected.

At this time, selecting the spring traveling mode according to the frame speed Hi in step S126 as described above can be paraphrased as follows. That is, when the curtain speed is not specified to be increased above the predetermined speed (S121: N) and the frame speed setting is AUTO (the frame speed is automatically selected) (S125: Y). ), The spring running mode is selected.
Further, selecting the hybrid driving mode according to the curtain speed Hi in step S113 as described above does not specify that the frame speed is increased to a predetermined speed or higher (S110: N), and the curtain speed is not specified. When the setting for automatically selecting is set (S112: Y), it can be said that the hybrid driving mode is selected.
By these processes, an appropriate driving mode selection is performed according to the user's intention.

It is significant to increase the curtain speed even when performing slit exposure. That is, if the curtain speed is high, the slit width can be widened even if the SS is the same, and such expansion of the slit width leads to reduction of exposure unevenness, and the image quality of the captured image can be improved.

Here, an example in which the capacitor 102 is provided has been described above, but it is not essential to provide the capacitor 102, for example, when the image pickup apparatus 1 adopts a form in which an external power source such as a commercial AC power source is used as the power source.
When the capacitor 102 is not provided, the charging waiting time of the capacitor 102 does not need to be considered. That is, the frame speed can be made the same in the hybrid traveling mode and the spring traveling mode.
Even when the capacitor 102 is not provided, by switching between the hybrid driving mode and the traveling mode, it is possible to switch from the traveling mode in which the traveling speed of the opening / closing blade is fast to the traveling mode in which the traveling speed is low, and it is quiet. And the life of the blade opening / closing device can be extended.

[2-5. First modification]

Hereinafter, as a control different from the switching of the traveling mode, an example of a configuration for adjusting the charging time of the capacitor 102 (first modification to third modification) will be described.
In the first modification, the charging current of the capacitor 102 is adjusted based on the remaining amount of the battery 98 to realize the charging time adjustment of the capacitor 102 according to the remaining amount of the battery 98, that is, the continuous shooting speed adjustment. ..

FIG. 36 shows a circuit configuration example of the drive system of the magnetic drive unit 27 in the image pickup apparatus 1 as the first modification.
In the following description, parts that are similar to the parts that have already been explained are designated by the same reference numerals and the description thereof will be omitted.
As shown in the figure, in the drive system in this case, the control circuit 104 is provided in the shutter motor driver unit 99. The control circuit 104 performs constant current control on the output current of the DC / DC converter 101 (that is, the charging current of the capacitor 102). Specifically, in this example, the DC / DC converter 101 is configured as a switching regulator, and the control circuit 104 PWM (Pulse Width Modulation) the switching operation of the switching element that interrupts the input voltage in the DC / DC converter 101. Control is performed so as to control and adjust the ON duty (or OFF duty) of the switching element so that the output current value (current value) of the DC / DC converter 101 becomes constant at the target value It. Do.

Then, the control unit 95 in this case acquires a value (for example, SOC: charge rate) indicating the remaining amount (charge remaining amount) of the battery 98, and the target of constant current control by the control circuit 104 according to the acquired value. The value It is set variably. Specifically, the higher the remaining amount of the battery 98, the higher the target value It (that is, the value of the charging current of the capacitor 102 becomes larger).
For example, the adjustment of the target value It at this time is an adjustment using a threshold value for the remaining amount of the battery 98. Specifically, for example, when the value indicating the remaining amount of the battery 98 is equal to or greater than the threshold value, the target value It is set as the target value It. One value can be set, and if it falls below the threshold value, an adjustment can be made to set a second value (<first value) as the target value It. Alternatively, an adjustment method is also conceivable in which the target value It is set according to the value indicating the remaining amount by using a table or a function indicating the correspondence between the value indicating the remaining amount of the battery 98 and the target value It.

By adjusting the charging current of the capacitor 102 based on the remaining amount of the battery 98 in this way, the frame speed can be adjusted according to the remaining amount of the battery 98.
FIG. 37 is a diagram for explaining an image of adjustment, and the solid line in the figure represents an adjustment image as a first modification.
In the illustrated adjustment example, as the remaining amount of the battery 98 increases, the charging current of the capacitor 102 is increased so that the frame speed becomes higher.
In this case, the charging current of the capacitor 102 becomes low in the region where the remaining amount of the battery 98 is low, that is, the load of the battery 98 becomes light. When the battery 98 has a low remaining amount and a high load, the output voltage drops due to the voltage drop due to the internal resistance of the battery 98, and there is a risk that the output voltage drops below the reset voltage. By making adjustments that reduce the charging current according to the decrease in the remaining amount of the battery 98 as in the adjustment example shown in the figure, it is possible to prevent the output voltage of the battery 98 from being reduced unnecessarily. be able to.

Here, in FIG. 37, as a comparison, the case where the adjustment as the first modification is not performed is represented by the alternate long and short dash line. When the adjustment as the first modification is not performed, the charging current of the capacitor 102 is determined by the torque of the motor as the magnetic drive unit 27, the impedance of the motor, and the like, and the performance of the coma speed is also determined according to these factors. Become. Therefore, even though the battery 98 has a large remaining amount and has a sufficient power supply capacity, the frame speed performance cannot be sufficiently brought out.
On the other hand, by performing the adjustment as the first modification, the frame speed performance can be sufficiently brought out according to the remaining amount of the battery 98.

As shown by the dotted line in FIG. 37, the frame speed is kept constant (that is, the charging current of the capacitor 102) with respect to the decrease in the remaining amount of the battery 98 in the region where the remaining amount of the battery 98 is small (the region below a predetermined value). It is also possible to make adjustments such as (keep it constant).

[2-6. Second variant]

In the second modification, the charging voltage of the capacitor 102 is adjusted to adjust the size of the output (motor output) of the magnetic drive unit 27 and the charging time of the capacitor 102.
FIG. 38 is a diagram for explaining an image of adjustment as a second modification.
As shown in FIG. 38A, when the curtain speed is increased, the charging voltage of the capacitor 102 is increased. As a result, the drive voltage of the magnetic drive unit 27 rises, the output of the magnetic drive unit 27 rises, and the curtain speed can be increased.
On the other hand, when increasing the frame speed, as shown in FIG. 38B, the charging time of the capacitor 102 is shortened by lowering the charging voltage of the capacitor 102. By shortening the charging time, the frame speed can be improved.

FIG. 39 shows a circuit configuration example of the drive system of the magnetic drive unit 27 in the image pickup apparatus 1 as a second modification.
In the drive system in this case, the DC / DC converter 101 is configured to be able to change the value (voltage value) of the output voltage. In this case, the control unit 95 gives an instruction to the DC / DC converter 101 to adjust the value of the output voltage.

For example, when it is desired to increase the strobe tuning speed, it is conceivable to increase the output voltage of the DC / DC converter 101, that is, the charging voltage of the capacitor 102 so that the output of the magnetic drive unit 27 increases. On the other hand, in the case of imaging with strobe light emission, if it is desired to increase the frame speed, it is conceivable to reduce the output voltage of the DC / DC converter 101, that is, the charging voltage of the capacitor 102 so that the charging time is shortened.
By making such adjustments, it becomes possible to select the optimum shutter performance according to each scene, such as increasing the strobe synchronization speed or increasing the frame speed, and one image pickup device 1 has a high degree of freedom. It becomes possible to perform imaging.

FIG. 40 is a diagram illustrating the relationship between the curtain speed and the frame speed in the second modification, and the plot by the white circle in the figure represents the relationship. In the figure, for comparison, the curtain speed and the frame speed when the adjustment as the second modification is not performed are represented by black circles.

[2-7. Third variant]

In the third modification, the drive current of the magnetic drive unit 27 is adjusted to adjust the size of the output of the magnetic drive unit 27 and the charging time of the capacitor 102.
FIG. 41 is a diagram for explaining an image of adjustment as a third modification.
When increasing the curtain speed, the drive current of the magnetic drive unit 27 is increased. When the drive current of the magnetic drive unit 27 is increased, as shown in FIG. 41A, the amount of discharge current of the capacitor 102 increases, while the voltage of the capacitor 102 decreases.
By increasing the drive current of the magnetic drive unit 27, the output of the magnetic drive unit 27 can be increased to increase the curtain speed.
On the other hand, when increasing the frame speed, the charging time of the capacitor 102 can be shortened by decreasing the driving current of the magnetic drive unit 27, and the frame speed can be improved by shortening the charging time. As shown in FIG. 41B, when the drive current of the magnetic drive unit 27 is reduced, the discharge current amount of the capacitor 102 is reduced, while the voltage of the capacitor 102 is increased.

FIG. 42 shows a circuit configuration example of the drive system of the magnetic drive unit 27 in the image pickup apparatus 1 as a third modification.
In the drive system in this case, as the driver IC 103, a variable output current type driver IC capable of changing the output current with respect to the magnetic drive unit 27 is used. In this case, the control unit 95 gives an instruction to the driver IC 103 to adjust the value of the output current to the magnetic drive unit 27, that is, the value of the drive current of the magnetic drive unit 27.

[2-8. Fourth variant]

The fourth modification is to charge the capacitor 102 even during the discharge period of the capacitor 102.
FIG. 43 is a diagram for explaining an image of a fourth modification. FIG. 43A shows a case where charging is not performed during discharging of the capacitor 102 for comparison, and FIG. 43B shows charging during discharging of the capacitor 102. The cases of the fourth modification are shown respectively.
By charging during the discharge period, the charging time per release of the capacitor 102 can be shortened, and as shown by the arrow X'in the figure, the waiting time until the release can be started is shortened. Is planned. Therefore, the frame speed can be increased.
Charging the capacitor 102 during the discharge period of the capacitor 102 can be rephrased as charging the capacitor 102 while driving the magnetic drive unit 27.

Here, when the capacitor 102 is charged while the capacitor 102 is being discharged (while the magnetic drive unit 27 is being driven), a large power load generated during the drive of the magnetic drive unit 27 is connected to the battery 98 or the battery 98. It should be considered that it affects other devices.
Therefore, in the fourth modification, as shown in FIG. 44, the control circuit 104 described above is provided in the drive system of the magnetic drive unit 27, and the output current of the DC / DC converter 101 is controlled by a constant current to perform magnetism. This is to prevent fluctuations in the load of the battery 98 as the drive unit 27 from affecting the battery 98 and other devices.
In FIG. 44, the control circuit 104 is provided to achieve a constant current, but instead of this, a constant current circuit may be provided in front of the DC / DC converter 101.

[2-9. About "imaging"]

In the present technology, "imaging" means processing such as conversion from photoelectric conversion processing by the image sensor 12 to a digital signal, noise removal by the camera signal processing unit 91, image quality correction, conversion to a brightness / color difference signal, and an image. Imaging of a series of processes from data specification conversion processing such as compression coding / decompression decoding processing of an image signal based on a predetermined image data format by the processing unit 92 to writing processing of an image signal by the recording control unit 94. It refers to a process starting from the photoelectric conversion process by the element 12 up to a part, or a process including all of them.
In the above processing, the order of each processing may be changed as appropriate.

<3. Summary of embodiments>

As described above, the first imaging device (1) as the embodiment includes an opening / closing blade (15) that travels in the direction of opening / closing the opening (13a) through which the incident light passing through the imaging surface passes, and an opening / closing blade (15). A motor (magnetic drive unit 27) provided so as to be able to transmit running power to the blades, a running spring (40) provided to be able to transmit running power to the opening / closing blades, and control for running control of the opening / closing blades. A unit (95) is provided, and the control unit switches the mode between a plurality of traveling modes in which the power consumption of the motor is different as the traveling mode of the opening / closing blade.
As a result, for the image pickup device in which the opening / closing blades can be driven by both the motor and the spring, switching from the traveling mode in which the power consumption of the motor is high to the traveling mode in which the motor power consumption is low, that is, the traveling speed of the opening / closing blades is low from the traveling mode. It is possible to switch to the driving mode.
Therefore, with respect to the image pickup device in which the opening / closing blades can be driven by both the motor and the spring, the opening / closing blades can be traveled in a traveling mode capable of improving quietness and extending the life of the blade opening / closing device. That is, it is possible to improve the quietness and extend the life of the blade opening / closing device.

Further, in the first imaging device as the embodiment, a capacitor (102) that serves as a driving power source for the motor is provided.
By providing the above-mentioned capacitor, the driving voltage of the motor can be increased, and the traveling speed of the opening / closing blade can be increased. Further, in a traveling motor having low power consumption of the motor, the time required for charging the capacitor can be shortened, so that a mode with a high continuous shooting speed can be realized.
Therefore, it is possible to switch between a running mode in which the running speed is prioritized as a running mode in which the power consumption of the motor is high and a running mode in which the continuous shooting speed is prioritized as a running mode in which the power consumption of the motor is low.

Further, in the first imaging device as the embodiment, the control unit has a first traveling mode and a second traveling mode as traveling modes having different power consumption, and the first traveling mode includes both the motor and the traveling spring. Is a mode for transmitting the traveling power, and the second traveling mode is a mode in which the traveling spring transmits the traveling power and the power consumption of the motor is lower than that of the first traveling mode.
As a result, it can be considered that the traveling mode of the opening / closing blade is a hybrid traveling mode in which the opening / closing blade is driven by the power of both the motor and the traveling spring, and that only the traveling spring drives the opening / closing blade (the motor drives the opening / closing blade). It is possible to switch to the spring running mode (including the case of slightly assisting).
Therefore, the hybrid driving mode requires a long charging time for the capacitor, but the traveling speed of the opening / closing blades can be increased, and the traveling speed priority driving mode and the spring driving mode, in which the charging time of the capacitor is short and the continuous shooting speed is increased. It is possible to switch to a driving mode that prioritizes continuous shooting speed, which can be increased.

Furthermore, in the first imaging device as the embodiment, the traveling spring is stored by the power of the motor, and the control unit has a first traveling mode and a second traveling mode as traveling modes having different power consumption. The first traveling mode is a mode in which the number of times the capacitor is charged is less than that of the second traveling mode.
When the traveling spring is stored by the power of the motor, in order to enable the opening and closing blades to be driven by both the motor and the traveling spring, the capacitor is charged to obtain the motor drive power for spring energy storage. Two chargings are required, one for obtaining the motor driving power for driving the open / close blades and the other for obtaining the motor driving power. Therefore, in the above-mentioned first running mode, these two charges are performed to realize the running mode as the hybrid running mode, and in the second running mode, only the charging for spring storage is performed and the opening and closing is performed only by the running spring. It is possible to realize a spring running mode that drives the blades.
Therefore, as a hybrid running mode, a running mode that requires a large number of times to charge the capacitor but can increase the running speed of the opening / closing blades, and a running mode that gives priority to running speed, and as a spring running mode, the number of times the capacitor is charged is small and the continuous shooting speed is increased. It is possible to switch to a driving mode that prioritizes continuous shooting speed, which can be increased.

Further, in the first imaging device as the embodiment, the control unit selects the traveling mode based on any of the parameters of the traveling speed of the opening / closing blade, the continuous shooting speed, and the shutter speed.
For example, a mode with high motor power consumption should be selected to increase the traveling speed of the opening / closing blades, and a mode with low motor power consumption (that is, a mode with a short charging time) should be selected to increase the continuous shooting speed. You should choose. Further, when increasing the shutter speed, it may be necessary to select a mode in which the motor power consumption is high.
Therefore, by selecting the traveling mode based on any of the parameters of the opening / closing blade traveling speed, continuous shooting speed, and shutter speed as described above, it is possible to select an appropriate traveling mode according to the setting of the parameters related to imaging. It can be carried out.

Further, in the first imaging device as the embodiment, the control unit selects the traveling mode based on the parameter of the shutter speed as the strobe synchronization speed.
As a result, if the strobe tuning speed is a speed that cannot be achieved in the driving mode with low motor power consumption, the driving mode with high motor power consumption is selected, and conversely, in the driving mode with low motor power consumption. When the speed is feasible, it is possible to select a driving mode with low motor power consumption to improve the continuous shooting speed.
Therefore, with respect to imaging accompanied by strobe light emission, it is possible to achieve both imaging at a high strobe synchronization speed and imaging at a high continuous shooting speed with one imaging device.

Furthermore, in the first imaging device as the embodiment, the control unit has, as the traveling mode, the first mode and the second mode in which the power consumption of the motor is lower than that of the first mode, and the traveling of the opening / closing blade. If the speed is not specified to be higher than the predetermined speed and the continuous shooting speed is set to be automatically selected, the second mode is selected as the traveling mode.
As a result, if the user is set to automatically select the continuous shooting speed when it is estimated that the user does not intend to increase the running speed of the opening / closing blade, the running mode with low motor power consumption (that is, the charging time is short). Mode) can be selected.
Therefore, it is possible to select an appropriate driving mode according to the user's intention.

Further, in the first imaging device as the embodiment, the control unit has a first mode and a second mode in which the power consumption of the motor is lower than that of the first mode as the traveling mode, and determines the continuous shooting speed. When the speed is not specified to be higher than the speed and the setting for automatically selecting the traveling speed of the opening / closing blade is set, the first mode is selected as the traveling mode.
As a result, when it is estimated that the user does not intend to increase the continuous shooting speed and the setting is made to automatically select the opening / closing blade traveling speed, the traveling mode with high motor power consumption (that is, the motor output increases). Mode) can be selected.
Therefore, it is possible to select an appropriate driving mode according to the user's intention.

Further, in the first imaging device as the embodiment, the control unit controls to adjust the charging time of the capacitor as a control different from the switching of the traveling mode.
By adjusting the charging time of the capacitor, it is possible to change the time required from the start of the release to the start of the next release, that is, the continuous shooting speed can be changed, and the output of the motor can be changed. Therefore, it is possible to change the traveling speed of the opening / closing blade.
Therefore, it is possible to improve the degree of freedom in adjusting the continuous shooting speed and the traveling speed of the opening / closing blade.

Furthermore, in the first image pickup apparatus as the embodiment, the control unit controls to adjust the charging current of the capacitor based on the remaining amount of the battery (98) which is the operating power source of the image pickup apparatus.
As a result, when the remaining battery power is high and the battery has sufficient power supply capacity, the current value of the charging current is increased to increase the running speed of the opening / closing blades, and the remaining battery power is low and the battery does not have sufficient power supply capacity. In that case, it is possible to reduce the current value of the charging current to prevent the output voltage of the battery from dropping unnecessarily.
Therefore, it is possible to appropriately adjust the opening / closing blade traveling speed according to the remaining battery level.

Further, in the first imaging device as the embodiment, the control unit controls to adjust the charging voltage of the capacitor.
By adjusting the charging voltage of the capacitor, the magnitude of the motor output is adjusted, that is, the traveling speed of the opening / closing blades is adjusted, and by adjusting the charging time of the capacitor, the continuous shooting speed is adjusted.
Therefore, it is possible to improve the degree of freedom in adjusting the continuous shooting speed and the traveling speed of the opening / closing blade.

Further, in the first imaging device as the embodiment, the control unit controls to adjust the drive current of the motor.
By adjusting the drive current of the motor, the magnitude of the motor output is adjusted, that is, the traveling speed of the on-off blades is adjusted, and the continuous shooting speed is adjusted by adjusting the charging time of the capacitor.
Therefore, it is possible to improve the degree of freedom in adjusting the continuous shooting speed and the traveling speed of the opening / closing blade.

Furthermore, in the first image pickup apparatus as the embodiment, the capacitor is charged even during the discharge period of the capacitor.
As a result, the waiting period until the release can be started can be shortened.
Therefore, the continuous shooting speed can be improved.

The first control method as an embodiment is an opening / closing blade that travels in a direction of opening / closing an opening through which incident light passing through an imaging surface passes, a motor provided that can transmit traveling power to the opening / closing blade, and opening / closing. This is a control method in an imaging device including a traveling spring provided so as to be able to transmit traveling power to the blades and a control unit for controlling the traveling of the opening / closing blades. This is a control method for switching modes between a plurality of driving modes having different power consumptions.
Even with such a first control method, the same operations and effects as those of the first imaging device described above can be obtained.

Further, the second imaging device (same as 1) as the embodiment has an opening / closing blade that travels in the opening / closing direction, which is the direction of opening / closing the opening through which the incident light passing through the imaging surface passes, and traveling power to the opening / closing blade. It is provided with a motor provided so as to be able to transmit, a traveling spring provided so as to be able to transmit traveling power to the opening / closing blades, and a control unit for controlling the traveling of the opening / closing blades. , The mode is switched between a plurality of traveling modes in which the traveling speeds of the opening / closing blades are different.
As a result, the image pickup device in which the opening / closing blades can be driven by both the motor and the spring can be switched from the traveling mode in which the traveling speed of the opening / closing blades is high to the traveling mode in which the traveling speed is low.
Therefore, with respect to the image pickup device in which the opening / closing blades can be driven by both the motor and the spring, the opening / closing blades can be traveled in a traveling mode capable of improving quietness and extending the life of the blade opening / closing device. That is, it is possible to improve the quietness and extend the life of the blade opening / closing device.

The second control method as an embodiment is provided with an opening / closing blade that travels in the opening / closing direction, which is the direction of opening / closing the opening through which the incident light passing through the imaging surface, and a traveling power that can be transmitted to the opening / closing blade. This is a control method in an imaging device including a motor, a traveling spring provided so as to transmit traveling power to the opening / closing blades, and a control unit for controlling the traveling of the opening / closing blades. As a mode, it is a control method for switching between a plurality of traveling modes in which the traveling speeds of the opening / closing blades are different.
The same operation and effect as the above-mentioned second imaging device can also be obtained by such a second control method.

Further, in the third imaging device (1) as the embodiment, the opening / closing blades operated in the opening / closing direction for opening / closing the opening, the coil (31) to which the driving current is supplied, and the coil are energized. It has a motor (magnetic drive unit 27) having a magnet to be rotated (32) and a rotor gear (33) to be rotated with the rotation of the magnet, and a drive gear (35) to be meshed with the rotor gear. It is equipped with a drive body (34) that rotates synchronously in the direction opposite to the magnet, and a traveling spring (40) that applies urging force to one side in the opening / closing direction to the opening / closing blades via the driving body. The control unit includes a blade opening / closing unit (blade opening / closing device 11) in which the opening / closing blades are operated in the opening / closing direction in accordance with the rotation operation of the drive body, and a control unit (95) for controlling the traveling of the opening / closing blades. As the traveling mode of the opening / closing blade, the mode is switched between a plurality of traveling modes in which the power consumption of the motor is different.
In the blade opening / closing unit having the above configuration, the opening / closing blade can be driven by the driving force of the motor generated by energizing the coil and the urging force of the traveling spring in the driving body. Further, with respect to the image pickup device in which the opening / closing blades can be driven by both the motor and the spring by the above control unit, the switching from the traveling mode in which the power consumption of the motor is high to the traveling mode in which the power consumption of the motor is low, that is, the opening / closing blades It is possible to switch from a running mode with a high running speed to a running mode with a low running speed.
Therefore, with respect to the image pickup device in which the opening / closing blades can be driven by both the motor and the spring, the opening / closing blades can be traveled in a traveling mode capable of improving quietness and extending the life of the blade opening / closing device. That is, it is possible to improve the quietness and extend the life of the blade opening / closing device.

Further, the fourth imaging device (1) of the embodiment includes an opening / closing blade that is operated in the opening / closing direction to open / close the opening, a coil to which a driving current is supplied, and a magnet that is rotated by energizing the coil. A motor having a rotor gear that is rotated with the rotation of the magnet, a drive body that has a drive gear meshed with the rotor gear and is rotated in the opposite direction to the magnet, and opening and closing via the drive body. A blade opening / closing unit that is provided with a traveling spring that applies an urging force to one side in the opening / closing direction of the blades, and the opening / closing blades are operated in the opening / closing direction in accordance with the rotational operation of the drive body, and a control that controls the traveling of the opening / closing blades. The control unit is provided with a unit, and as a traveling mode of the opening / closing blade, the mode is switched between a plurality of traveling modes having different traveling speeds of the opening / closing blade.
In the blade opening / closing unit having the above configuration, the opening / closing blade can be driven by the driving force of the motor generated by energizing the coil and the urging force of the traveling spring in the driving body. Further, the above-mentioned control unit makes it possible to switch the image pickup device in which the opening / closing blades can be driven by both the motor and the spring from the traveling mode in which the traveling speed of the opening / closing blades is fast to the traveling mode in which the traveling speed is low. ..
Therefore, with respect to the image pickup device in which the opening / closing blades can be driven by both the motor and the spring, the opening / closing blades can be traveled in a traveling mode capable of improving quietness and extending the life of the blade opening / closing device. That is, it is possible to improve the quietness and extend the life of the blade opening / closing device.

It should be noted that the effects described in the present specification are merely examples and are not limited, and other effects may be obtained.

<4. This technology>

The present technology can also be configured as follows.
(1)
An opening / closing blade that travels in the direction of opening / closing the opening through which the incident light passing through the imaging surface passes.
A motor provided so as to be able to transmit running power to the opening / closing blades,
A traveling spring provided so as to be able to transmit traveling power to the opening / closing blade,
A control unit for controlling the traveling of the opening / closing blade is provided.
The control unit
An image pickup device that switches between a plurality of traveling modes in which the power consumption of the motor is different as the traveling mode of the opening / closing blade.
(2)
The imaging device according to (1) above, which includes a capacitor that serves as a driving power source for the motor.
(3)
The control unit
It has a first driving mode and a second driving mode as driving modes having different power consumption.
The first traveling mode is a mode in which both the motor and the traveling spring transmit the traveling power, and the second traveling mode is a mode in which the traveling spring transmits the traveling power of the motor. The imaging device according to (2), wherein the power consumption is lower than that of the first traveling mode.
(4)
The traveling spring is stored by the power of the motor,
The control unit
It has a first driving mode and a second driving mode as driving modes having different power consumption.
The imaging device according to (2) or (3), wherein the first traveling mode is a mode in which the number of times the capacitor is charged is less than that of the second traveling mode.
(5)
The control unit
The imaging device according to any one of (2) to (4), wherein the traveling mode is selected based on any of the parameters of the traveling speed, the continuous shooting speed, and the shutter speed of the opening / closing blade.
(6)
The control unit
The imaging device according to (5) above, wherein the traveling mode is selected based on a parameter of a shutter speed as a strobe synchronization speed.
(7)
The control unit
The traveling mode includes a first mode and a second mode in which the power consumption of the motor is lower than that of the first mode.
When the specification for increasing the traveling speed of the opening / closing blade to a predetermined speed or higher is not specified and the continuous shooting speed is set to be automatically selected, the second mode is selected as the traveling mode (2). ) To (6).
(8)
The control unit
The traveling mode includes a first mode and a second mode in which the power consumption of the motor is lower than that of the first mode.
When the continuous shooting speed is not specified to be increased to a predetermined speed or higher and the traveling speed of the opening / closing blade is set to be automatically selected, the first mode is selected as the traveling mode (2). ) To (7).
(9)
The control unit
The imaging device according to any one of (2) to (8) above, wherein a control for adjusting the charging time of the capacitor is performed as a control different from the switching of the traveling mode.
(10)
The control unit
The imaging device according to (9), wherein the charging current of the capacitor is controlled to be adjusted based on the remaining amount of the battery which is the operating power source of the imaging device.
(11)
The control unit
The imaging device according to (9) or (10), which controls the adjustment of the charging voltage of the capacitor.
(12)
The control unit
The imaging device according to any one of (9) to (11) above, which controls to adjust the drive current of the motor.
(13)
The imaging device according to any one of (2) to (12) above, wherein the capacitor is charged even during the discharge period of the capacitor.

1 image pickup device, 4 shutter button, 3 flash (strobe), 10 optical system, 11 blade opening / closing device (blade opening / closing unit), 12 imaging element, 13a opening, 15 opening / closing blade, 27 magnetic drive unit (motor), 31 coil, 32 magnet, 33 rotor gear, 34 drive body, 35 drive gear, 40 running spring, 56 electromagnet, 95 control unit, 96 driver unit, 97 operation unit, 98 battery 99 shutter motor driver unit, 100 spring driver unit, 101 DC / DC converter, 102 capacitor, 103 driver IC, 104 control circuit

Claims

An opening / closing blade that travels in the direction of opening / closing the opening through which the incident light passing through the imaging surface passes.
A motor provided so as to be able to transmit running power to the opening / closing blades,
A traveling spring provided so as to be able to transmit traveling power to the opening / closing blade,
A control unit for controlling the traveling of the opening / closing blade is provided.
The control unit
An image pickup device that switches between a plurality of traveling modes in which the power consumption of the motor is different as the traveling mode of the opening / closing blade.
The imaging device according to claim 1, further comprising a capacitor that serves as a driving power source for the motor.
The control unit
It has a first driving mode and a second driving mode as driving modes having different power consumption.
The first traveling mode is a mode in which both the motor and the traveling spring transmit the traveling power, and the second traveling mode is a mode in which the traveling spring transmits the traveling power of the motor. The imaging device according to claim 2, wherein the power consumption is lower than that of the first traveling mode.
The traveling spring is stored by the power of the motor,
The control unit
It has a first driving mode and a second driving mode as driving modes having different power consumption.
The imaging device according to claim 2, wherein the first traveling mode is a mode in which the number of times the capacitor is charged is less than that of the second traveling mode.
The control unit
The imaging device according to claim 2, wherein the traveling mode is selected based on any of the parameters of the traveling speed, the continuous shooting speed, and the shutter speed of the opening / closing blade.
The control unit
The imaging device according to claim 5, wherein the traveling mode is selected based on a parameter of a shutter speed as a strobe synchronization speed.
The control unit
The traveling mode includes a first mode and a second mode in which the power consumption of the motor is lower than that of the first mode.
2. When the specification for increasing the traveling speed of the opening / closing blade to a predetermined speed or higher is not specified and the continuous shooting speed is set to be automatically selected, the second mode is selected as the traveling mode. The imaging apparatus according to.
The control unit
The traveling mode includes a first mode and a second mode in which the power consumption of the motor is lower than that of the first mode.
2. If the continuous shooting speed is not specified to be increased to a predetermined speed or higher and the traveling speed of the opening / closing blade is set to be automatically selected, the first mode is selected as the traveling mode. The imaging apparatus according to.
The control unit
The imaging device according to claim 2, wherein a control for adjusting the charging time of the capacitor is performed as a control different from the switching of the traveling mode.
The control unit
The imaging device according to claim 9, wherein control is performed to adjust the charging current of the capacitor based on the remaining amount of the battery which is the operating power source of the imaging device.
The control unit
The imaging device according to claim 9, wherein control is performed to adjust the charging voltage of the capacitor.
The control unit
The imaging device according to claim 9, wherein control is performed to adjust the drive current of the motor.
The imaging device according to claim 2, wherein the capacitor is charged even during the discharge period of the capacitor.
An opening / closing blade that travels in the direction of opening / closing the opening through which the incident light passing through the imaging surface passes.
A motor provided so as to be able to transmit running power to the opening / closing blades,
A traveling spring provided so as to be able to transmit traveling power to the opening / closing blade,
A control method in an imaging device including a control unit that controls traveling of the opening / closing blades.
The control unit
A control method for switching between a plurality of traveling modes in which the power consumption of the motor is different as the traveling mode of the opening / closing blade.
An opening / closing blade that travels in the opening / closing direction, which is the direction in which the opening through which the incident light passing through the imaging surface passes, is opened / closed.
A motor provided so as to be able to transmit running power to the opening / closing blades,
A traveling spring provided so as to be able to transmit traveling power to the opening / closing blade,
A control unit for controlling the traveling of the opening / closing blade is provided.
The control unit
As the traveling mode of the opening / closing blade, an imaging device that switches modes between a plurality of traveling modes in which the traveling speed of the opening / closing blade is different.
An opening / closing blade that travels in the opening / closing direction, which is the direction in which the opening through which the incident light passing through the imaging surface passes, is opened / closed.
A motor provided so as to be able to transmit running power to the opening / closing blades,
A traveling spring provided so as to be able to transmit traveling power to the opening / closing blade,
A control method in an imaging device including a control unit that controls traveling of the opening / closing blades.
The control unit
As a traveling mode of the opening / closing blade, a control method for switching a mode between a plurality of traveling modes in which the traveling speed of the opening / closing blade is different.
Opening and closing blades that operate in the opening and closing direction to open and close the opening,
A motor having a coil to which a drive current is supplied, a magnet that is rotated by energizing the coil, and a rotor gear that is rotated by the rotation of the magnet.
A drive body having a drive gear meshed with the rotor gear and rotating synchronously in the direction opposite to the magnet.
The opening / closing blade is provided with a traveling spring that applies an urging force to one side in the opening / closing direction via the driving body.
A blade opening / closing unit in which the opening / closing blades are operated in the opening / closing direction in accordance with the rotational operation of the drive body.
A control unit for controlling the traveling of the opening / closing blade is provided.
The control unit
An image pickup device that switches between a plurality of traveling modes in which the power consumption of the motor is different as the traveling mode of the opening / closing blade.
Opening and closing blades that operate in the opening and closing direction to open and close the opening,
A motor having a coil to which a drive current is supplied, a magnet that is rotated by energizing the coil, and a rotor gear that is rotated by the rotation of the magnet.
A drive body having a drive gear meshed with the rotor gear and rotating synchronously in the direction opposite to the magnet.
The opening / closing blade is provided with a traveling spring that applies an urging force to one side in the opening / closing direction via the driving body.
A blade opening / closing unit in which the opening / closing blades are operated in the opening / closing direction in accordance with the rotational operation of the drive body.
A control unit for controlling the traveling of the opening / closing blade is provided.
The control unit
As the traveling mode of the opening / closing blade, an imaging device that switches modes between a plurality of traveling modes in which the traveling speed of the opening / closing blade is different.