JP2020194094A - Imaging device - Google Patents

Abstract

To provide an imaging device capable of suppressing misalignment of a lens holding frame when the device receives an external impact without increasing the size of the device.SOLUTION: An imaging device includes: a drive unit for driving to spin a lead screw; a rack member that has teeth that meshes with the lead screw that engages with a holding member holding a lens, and when the lead screw is driven by the drive unit, moves along the lead screw; an impact detection unit that detects impact force; and a control unit that controls the drive unit. The control unit is configured so as to, when an impact force is detected by the impact detection unit, control the drive unit to drive the holding member to move in the same direction as the direction of the movement of the holding member due to the impact.SELECTED DRAWING: Figure 6

Description

The present invention relates to an imaging device having a lens driving device.

Surveillance cameras such as network cameras are usually installed on walls or ceilings, and captured images are output to an operation unit connected by wired or wireless communication via a communication unit, or the camera can be operated by operating the operation unit. Will be done.

Further, there is known a surveillance camera having a moving lens that moves in the optical axis direction for zooming and focusing. The moving lens is generally held by the lens holding frame, and the lens holding frame is generally guided so as to be movable in the optical axis direction.

Further, as a drive device for the lens holding frame, a motor having a reed screw and a rack member that is coupled to the lens holding frame and meshes with the reed screw and moves along the reed screw by the rotation of the motor are known. ing. Further, the lead screw is generally made of metal, and the rack member is generally made of resin.

A surveillance camera provided with a lens holding frame having a rack member as described above may receive an impact from the outside, and the lens holding frame may receive a force in the optical axis direction. In that case, the portion of the tooth that meshes with the lead screw of the rack member may get over the thread of the lead screw and cause tooth skipping.

When tooth skipping occurs, the portion of the tooth that meshes with the lead screw of the rack member is scraped off by the thread of the lead screw. When the portion of the tooth that meshes with the lead screw of the rack member is scraped off, the amount of meshing with the lead screw decreases, and it becomes difficult to hold the lens holding frame by the lead screw.

In this case, even if the impact or vibration applied to the surveillance camera is slight, the lens holding frame will be displaced and the imaging performance will not be obtained.

Therefore, the device described in Patent Document 1 has a fixed cylinder, an optical element holding frame for holding an optical element, a rack portion displaceable in the optical axis direction together with the optical element holding frame, and a rotatable rack portion that meshes with the rack portion. It has a lead screw. Further, it has a motor that rotationally drives the reed screw, and a holding means that holds the motor and is attached to the fixed cylinder via an elastic member. With this configuration, when an impact is applied in the optical axis direction, the elastic member absorbs the impact received by the rack portion and suppresses tooth skipping of the rack portion.

Japanese Unexamined Patent Publication No. 2013-186239

However, in the conventional technique disclosed in Patent Document 1 described above, a space for arranging the elastic member is required, so that the apparatus becomes large in size.

Therefore, an object of the present invention is to provide an imaging device capable of suppressing a displacement of the lens holding frame when the device receives an impact from the outside without increasing the size of the device.

In order to achieve the above object, the image pickup apparatus of the present invention has a drive unit that rotates a lead screw and a tooth portion that meshes with the lead screw, and is coupled to a holding member that holds the lens by the drive unit. A rack member that moves along the lead screw when the lead screw is rotated, an impact detection unit that detects an impact force, and a control unit that drives the drive unit are provided. When the impact force is detected by the impact detection unit, the control unit controls to drive the drive unit so that the holding member moves in the same direction as the holding member moves due to the impact force.

In the image pickup apparatus of the present invention, it is possible to suppress the displacement of the lens holding frame when the apparatus receives an impact from the outside without increasing the size of the apparatus.

It is an exploded perspective view of the surveillance camera which concerns on 1st Embodiment. It is an exploded perspective view of the image pickup unit which concerns on 1st Embodiment. It is a figure which shows the meshing state of the threaded part of a rack member and a motor which concerns on 1st Embodiment. It is a block diagram of the structure of the monitoring system which concerns on 1st Embodiment. It is a figure which shows the table stored in the memory which concerns on 1st Embodiment. It is a flowchart of the surveillance camera control which concerns on 1st Embodiment. It is a flowchart of the surveillance camera control which concerns on 2nd Embodiment. It is a figure which shows the table stored in the memory which concerns on 2nd Embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(First Embodiment)
<Overview of surveillance cameras>
First, with reference to FIG. 1, a network surveillance camera 50 (hereinafter, referred to as a surveillance camera) as an example of an imaging device will be described. FIG. 1 is an exploded perspective view of a surveillance camera according to the first embodiment of the present invention.

The surveillance camera 50 includes a lens barrel 4, an image sensor unit 7, an infrared LED 6, an infrared LED holding member 5, an upper case 2, a bottom case 8, and a dome cover 3.

The upper case 2 is fixed to the bottom case 8 by a plurality of fastening screws 1. The bottom case 8 is a metal exterior component located on the installation surface side such as the ceiling or wall surface on which the surveillance camera 50 is installed. The upper case 2 is also a metal exterior part. The dome cover 3 is a substantially hemispherical shape that is arranged on the subject side of the lens barrel 4 and protects the lens barrel 4, and is made of a thick transparent or translucent resin member. The infrared LED 6 for infrared illumination is turned on when the illuminance is low to emit infrared light so that an image can be taken even in a low illuminance state. The infrared LED holding member 5 is a member that holds the infrared LED 6. The image sensor unit 7 has an image sensor 116 and is attached to the lens barrel 4. The lens barrel 4 includes a zoom lens and a focus lens.

<Details of imaging unit>
Next, the details of the imaging unit will be described with reference to FIGS. 2A and 2B. The image pickup unit includes a lens barrel 4 and an image pickup element unit 7. 2 (a) and 2 (b) are exploded perspective views of the imaging unit, which are viewed from different directions.

The lens barrel 4 includes four lens groups including a zoom lens and a focus lens, a lens holding frame (fixed lens frame, a lens moving frame) for holding each lens group as a holding member, a plurality of guide bars, and an aperture. It is equipped with a unit 23. Further, the lens barrel 4 further includes a front fixed frame 11, a rear fixed frame 12, an infrared cut filter 33, a filter moving frame 34, a plurality of motors as a driving unit, and an impact detection sensor 41. It has. The front fixed frame 11 as a housing is connected to the rear fixed frame 12 with screws (not shown), and houses a plurality of lens groups, an aperture unit, and the like inside.

The fixed lens 9 is a lens fixed in the optical axis direction. The first zoom lens 13 is a lens that moves in the optical axis direction to perform a variable magnification operation. The focus lens 14 is a lens that moves in the optical axis direction to perform a focusing operation. The second zoom lens 15 is a lens that moves in the optical axis direction to perform a variable magnification operation. The fixed lens frame 10 holds the fixed lens 9, is fixed to the front fixed frame 11 by screws (not shown), and captures incident light for forming an image into the lens barrel 4.

The guide bars 16, 17, 18, and 19 guide the movement of the lens moving frame for holding the moving lens group in the optical axis direction. The guide bars 16, 17, 18, and 19 are fixed so as to be sandwiched between the front fixing frame 11 and the rear fixing frame 12.

The first zoom lens moving frame 20 holds the first zoom lens 13 and is supported by a guide bar (through hole) 16 so as to be movable in the optical axis direction. In the first zoom lens moving frame 20, the guide bar (U groove) 17 engages the U groove on the first zoom lens moving frame 20, and the rotation around the guide bar (U groove) 17 is restricted. Will be done. The first zoom rack 21 is fixed to the first zoom lens moving frame 20 in a state of being urged in the optical axis direction and the rotation direction by the rack spring 211. Then, it engages with the screw shaft portion 22a of the first zoom motor 22, and moves in the optical axis direction together with the first zoom lens moving frame 20 by the rotation of the screw shaft portion 22a. The first zoom rack 21 is made of resin in consideration of workability and slidability, and the screw shaft portion 22a is made of metal in consideration of strength and workability.

The aperture unit 23 is fixed to the first zoom lens moving frame 20 by screws 24, and adjusts the amount of incident light in the lens barrel 4. The diaphragm unit 23 can freely change the size of the aperture diameter of the opening 25 formed by the diaphragm blades (not shown) by changing the input current, and can adjust the amount of incident light. Further, a moving FPC 26 for inputting a current from the outside is connected to the diaphragm unit 23, and is drawn from the inside of the front side fixing frame 11 to the outside of the rear side fixing frame 12 and connected to an external power supply.

The focus lens moving frame 27 holds the focus lens 14 and is supported by a guide bar (through hole) 19 so as to be movable in the optical axis direction. In the focus lens moving frame 27, the U groove on the focus lens moving frame 27 is engaged with the guide bar (U groove) 18, and the rotation around the guide bar (U groove) 18 is restricted. The focus rack 28 is fixed to the focus lens moving frame 27 in a state of being urged in the optical axis direction and the rotation direction by the rack spring 288. Then, it engages with the screw shaft portion of the focus motor 29 and moves in the optical axis direction together with the focus lens moving frame 27 by the rotation of the screw shaft portion. The focus rack 28 is made of resin in consideration of workability and slidability, and the screw shaft portion is made of metal in consideration of strength and workability.

The second zoom lens moving frame 30 holds the second zoom lens 15 and is supported by a guide bar (through hole) 19 so as to be movable in the optical axis direction. In the second zoom lens moving frame 30, the guide bar (U groove) 18 engages the U groove on the second zoom lens moving frame 30, and the rotation around the guide bar (U groove) 18 is restricted. Will be done. The second zoom rack 31 is fixed to the second zoom lens moving frame 30 in a state of being urged in the optical axis direction and the rotation direction by the rack spring 311. Then, it engages with the screw shaft portion of the second zoom motor 32, and moves in the optical axis direction together with the second zoom lens moving frame 30 by the rotation of the screw shaft portion. The second zoom rack 31 is made of resin in consideration of workability and slidability, and the screw shaft portion is made of metal in consideration of strength and workability.

The filter moving frame 34 holds an infrared cut filter 33, and is supported by a guide bar (through hole) 35 so as to be movable in the optical axis direction. In the filter moving frame 34, the U groove on the filter moving frame 34 is engaged with the guide bar (U groove) 36, and the rotation around the guide bar (U groove) 36 is restricted. The rack 37 is fixed to the filter moving frame 34 in a state of being urged in the direction perpendicular to the optical axis and in the rotational direction by a rack spring (not shown). Then, it engages with the screw shaft portion of the filter motor 38, and moves in a direction substantially perpendicular to the optical axis together with the filter moving frame 34 by the rotation of the screw shaft portion. The rack 37 is made of resin in consideration of workability and slidability, and the screw shaft portion is made of metal in consideration of strength and workability.

As a result, the infrared cut filter 33 is retracted from the optical path to enter a shooting mode in a transparent state called a night mode, and infrared light is also condensed to enable subject shooting even at night. The photographing mode in which the infrared cut filter 33 is inserted on the optical path is called a day mode in which infrared light is cut and visible light is condensed, and it is possible to photograph a subject in the daytime.

The first zoom motor 22, the focus motor 29, the second zoom motor 32, and the filter motor 38 are stepping motors. The motors 22, 29, 32, and 38 move the first zoom lens moving frame 20, the focus lens moving frame 27, the second zoom lens moving frame 30, and the filter moving frame 34, respectively. Further, the lens moving frames 20, 27, 30 and the filter moving frame 34 are driven pulses of the first zoom motor 22, the focus motor 29, the second zoom motor 32, and the filter motor 38 by the output of the photo interrupter (not shown). The position is controlled by the number. The first zoom motor 22, the focus motor 29, the second zoom motor 32, and the filter motor 38 are always energized in order to suppress the positional deviation of the lens moving frames 20, 27, 30 and the filter moving frame 34 due to their own weight. ..

The impact detection sensor 41 as an impact detection unit detects the magnitude (impact value) of the force applied to the lens barrel 4 in the optical axis direction. The impact detection sensor 41 is fixed to the lens FPC 39 so as to detect an impact value in the vicinity of the rear fixed frame 12. When the exterior such as the dome cover 3 receives an impact, the impact propagates in the order of the dome cover 3, the rear fixed frame 12, and the moving lens frame, so the responsiveness from detection to driving each motor is determined. It is a consideration. In the present embodiment, the impact detection unit 41 is attached to the lens FPC 39 to detect the impact value in the vicinity of the rear fixed frame 12. In this way, by detecting the impact force at a position relatively close to the moving lens frame, the direction and amount of the impact applied to the moving lens frame can be detected as accurately as possible. However, in order to detect the impact force more accurately, an impact detection sensor may be provided for each moving lens frame.

The lens FPC 39 is connected to a power supply board (not shown), and each of the aperture unit 23, the first zoom motor 22, the focus motor 29, the second zoom motor 32, and the filter motor 38 is activated by energization. Further, an impact detection sensor 41 and a photo interrupter (not shown) are fixed to the lens FPC 39 by soldering. The image sensor holder 40 holds the image sensor unit 7 and is fixed to the rear fixing frame 12 by screws (not shown).

Next, the details of the screw shaft portion 22a as the lead screw of the first zoom rack 21 and the first zoom motor 22 will be described with reference to FIGS. 3A and 3B. 3 (a) and 3 (b) are views showing the state of meshing of the first zoom rack 21 and the first zoom motor 22.

As shown in FIG. 3A, the urging portion 21a and the tooth portion 21b of the first zoom rack 21 are urged by the rack spring 211 so as to sandwich the screw shaft portion 22a of the first zoom motor 22. The tooth portion 21b and the screw shaft portion 22a are in mesh with each other. Further, the facing teeth 21c of the first zoom rack 21 are provided at positions facing the tooth portions 21b, and are not in constant contact with the screw shaft portion 22a of the first zoom motor 22 and are separated from each other. The facing teeth 21c are configured to come into contact with the screw shaft portion 22a as shown in FIG. 3B when the tooth portion 21b of the first zoom rack 21 gets over the screw thread portion of the screw shaft portion 22a. ing.

When the surveillance camera 50 receives an impact, the first zoom rack 21 receives a load in the optical axis direction. However, with the above configuration, when the tooth portion 21b of the first zoom rack 21 tries to separate from the screw shaft portion 22a, the facing tooth 21c of the first zoom rack 21 becomes the first zoom motor 22. It meshes with the screw shaft portion 22a. Therefore, the displacement due to tooth skipping can be suppressed.

Specifically, when the distance between the tooth portion 21b of the first zoom rack 21 and the facing tooth 21c is 21d and the outer diameter of the screw shaft portion 22a is 22b, the outer diameter 22b> the distance 21d is set to make the first zoom. The misalignment between the rack 21 and the screw shaft portion 22a can be suppressed. However, when the impact received by the surveillance camera 50 increases, the load on the first zoom rack 21 in the optical axis direction also increases. Therefore, when the impact received by the surveillance camera 50 exceeds a predetermined value, tooth skipping may occur, and a part of the tooth portion 21b and the facing tooth 21c of the first zoom rack 21 may be scraped off by the screw shaft portion 22a. If the amount of scraping is large, the amount of catch between the tooth portion 21b and the screw shaft portion 22a becomes small, so that even a small impact or vibration may cause misalignment, which may affect the captured image. is there.

Although the structures of the first zoom motor 22, the first zoom lens moving frame 20, and the first zoom rack 21 are shown here, the structures of the focus motor 29, the focus lens moving frame 27, and the focus rack 28 are also shown. The same is true.

<Overview of surveillance camera system>
Next, the monitoring system of the present embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a block diagram of the configuration of the monitoring system. FIG. 5 is a table 51 stored in the memory 108. The surveillance system includes a surveillance camera 50 and an operation unit 112 that remotely operates the surveillance camera 50.

As described above, the surveillance camera 50 has a lens barrel 4 and an image sensor unit 7. The lens barrel 4 has a first zoom lens 13 and a focus lens 14, and the image pickup element unit 7 has an image pickup element 116. The lens configuration in the lens barrel 4 is as described above, and the description will be simplified here.

The image sensor 116 converts the light imaged by the lens barrel 4 into an electric signal. The analog electric signal (imaging signal) output from the image sensor 116 is gain-adjusted by the AGC 104, converted into a digital signal by the AD converter 105, and then input to the camera signal processing unit 106.

The camera signal processing unit 106 performs various image processing on the digital image pickup signal to generate a video signal. The video signal is output to the operation unit 112 connected to the surveillance camera 50 via the communication unit 107 by wired or wireless communication.

The evaluation value calculation unit 109 receives RGB pixel values or luminance values from the AD converter 105 or the camera signal processing unit 106 for each evaluation frame set in the imaging screen, and performs autofocus (hereinafter, AF). Calculate the evaluation value to be used. Generally, the evaluation value is calculated based on the contrast of the image and the high frequency component. As the evaluation value, any method such as phase difference or reflected light such as infrared light may be used as long as the focus position can be known.

The impact detection unit 41 detects the impact value applied to the lens barrel 4 in the optical axis direction. The control unit 111 sets the zoom setting position and the focus setting position with respect to the first zoom motor 22 and the focus motor 29 based on the calculation result from the control command transmitted from the operation unit 112 via the communication unit 107. Instruct. Although omitted here, the same control is performed on the second zoom motor 32 and the filter motor 38.

The first zoom motor 22 controls the position of the zoom lens moving frame 20 based on the zoom setting position instructed by the control unit 111. The focus motor 29 controls the position of the focus lens moving frame 27 based on the focus setting position instructed by the control unit 111. The memory 108 stores a preset value. Drive direction and drive of the first zoom motor 22 and the focus motor 29 for alleviating the impact applied to the first zoom lens moving frame 20 and the focus lens moving frame 27 according to the impact value detected by the impact detection unit 41. The amount is remembered. Specifically, as shown in FIG. 5, the memory 108 stores a table 51 showing the drive direction and the number of drive pulses of the first zoom motor 22 and the focus motor 29 according to the impact value. Here, the drive direction and drive amount of the first zoom motor 22 and the focus motor 29 are stored, but the drive direction and drive amount of the second zoom motor 32 may be added.

As for the impact value and the driving direction, the predetermined direction is the positive direction and the opposite direction is the negative direction. The driving direction is the same as the direction in which the impact force is received. That is, when the lens barrel 4 receives an impact force in the + direction, the first zoom lens moving frame 20 and the focus lens moving frame 27 are driven in the + direction. When the lens barrel 4 receives an impact force in the − direction, the first zoom lens moving frame 20 and the focus lens moving frame 27 are driven in the − direction. Further, in the table 51, the drive pulses of the first zoom motor 22 and the focus motor 29 are different because of the difference in weight and the difference in characteristics between the first zoom lens moving frame 20 and the focus lens moving frame 27. is there.

The operation unit 112 includes a system control unit 113, an input unit 114, and a display unit 115. The system control unit 113 generates a camera control command according to the GUI operation of the operator (operator) and transmits the camera control command to the surveillance camera 50 via the communication unit 107.

A pointing device such as a keyboard or mouse is used as the input unit 114, and an operator (operator) operates the GUI via the input unit 114. The display unit 115 displays an image captured by the surveillance camera 50 and a GUI that guides the operation of the operator of the operation unit 112.

<Control method of surveillance camera when receiving an impact from the outside>
Next, a method of controlling the surveillance camera when an impact is received from the outside will be described with reference to FIG. FIG. 6 is a flowchart of the surveillance camera 50 of the first embodiment.

First, in S201, the impact detection unit 41 detects the impact value. Then, in S202, the table 51 in the memory 108 is read out, and the process proceeds to S203. In S203, it is determined whether the first zoom motor 22 and the focus motor 29 need to be driven based on the impact values detected in the table 51 and S201 read in S202. If driving is required, proceed to S204, and if not required, end. The case of termination is when the impact value is small, that is, when the absolute value of the impact value is 50 G or less. In this case, the configuration as shown in FIG. 3 can suppress the displacement due to tooth skipping.

In S204, based on the impact values detected in the table 51 and S201 read in S202, a drive signal for driving each direction and the number of steps is input to the first zoom motor 22 and the focus motor 29, and the drive signals are sent to S205. Proceed. In S205, the control unit 111 drives the first zoom motor 22 and the focus motor 29 in response to the signal input in S204. Then, the process ends.

For example, when the impact value is + 40G, the number of drive pulses is 0 for both the first zoom motor 22 and the focus motor 29, as shown in FIG. Therefore, the control unit 111 does not drive the first zoom motor 22 and the focus motor 29. When the impact value is + 70G, the control unit 111 drives the first zoom motor 22 so that the first zoom moving frame 20 moves in the + direction by 10 pulses. On the other hand, the control unit 111 does not drive the focus motor 29 because the number of drive pulses is 0.

When the impact value is + 300G, the control unit 111 drives the first zoom motor 22 so as to move the first zoom moving frame 20 in the + direction by 50 pulses. The control unit 111 drives the focus motor 29 so as to move the focus movement frame 30 in the + direction by 40 pulses. That is, when the detected impact value is equal to or higher than a predetermined value, the first zoom motor 22 and the focus motor 29 are driven.

In the present embodiment, by implementing the above-mentioned configuration and control, when the surveillance camera 50 receives an impact force and a load is applied to the rack member in the optical axis direction, the surveillance camera 50 operates in the direction of moving due to the load. Drive the motor. This reduces tooth skipping. By reducing the tooth skipping, the amount of scraping of the tooth portion of the rack member is also reduced, and it is possible to suppress the displacement due to the weight of the lens moving frame or the like during the subsequent shooting.

Further, the impact detection unit 41 is attached to the lens FPC 39 to detect the impact value in the vicinity of the rear fixed frame 12. In this way, by detecting the impact force at a position relatively close to the moving lens frame, the direction and amount of the impact applied to the moving lens frame can be detected as accurately as possible.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. 7 and 8. In the second embodiment, control is performed to change the energization of the motor from on to off according to the impact value. FIG. 7 is a flowchart of the surveillance camera 50 of the second embodiment. FIG. 8 is a table 351 stored in the memory 108. The description of the same part as that of the first embodiment will be omitted.

First, in S301, the impact detection unit 41 detects the impact value. Then, in S302, the table 351 in the memory 108 is read out, and the process proceeds to S303. In S303, it is determined whether it is necessary to change the energized state of the first zoom motor 22 and the focus motor 29 based on the impact values detected in the table 351 read in S302 and S301. If it is necessary to change the energized state, proceed to S304, and if it is not necessary, end.

The change of the energized state is to turn the energized state of the first zoom motor 22 and the focus motor 29 from on to off. The case of termination is when the impact value is small, that is, when the absolute value of the impact value is 100 G or less. In this case, the configuration as shown in FIG. 3 can suppress the misalignment due to tooth skipping. In S304, the energization of both or one of the first zoom motor 22 and the focus motor 29 is turned off.

For example, when the impact value is + 70G, both the first zoom motor 22 and the focus motor 29 are energized as shown in FIG. Therefore, the control unit 111 does not change the energized state of the first zoom motor 22 and the focus motor 29. When the impact value is + 110G, the control unit 111 changes the energized state of the first zoom motor 22 from on to off. On the other hand, the control unit 111 does not change the energized state of the focus motor 29. Further, when the impact value is + 300G, the control unit 111 changes the energized state of the first zoom motor 22 and the focus motor 29 from on to off.

As described above, by changing the energization of the motor from on to off when an impact force is applied, the lens moving frame moves while rotating the screw shaft portion, so that the occurrence of tooth skipping can be suppressed. In other words, depending on conditions such as the weight of the lens moving frame, the lead of the screw shaft of the motor, and the characteristics of the motor, the lens moving frame can be moved when an impact force is applied by turning off the power of the motor and reducing the holding torque. It will move while rotating the screw shaft part.

The width of the impact value of the table 51 or the table 351 may be changed according to the accuracy of detecting the impact value of the impact detection unit 41. That is, when the impact value detection accuracy of the impact detection unit 41 is high, the impact value of the table 51 or the table 351 may be made smaller.

The lens barrel 4 may be an interchangeable lens type that is removable from the image sensor unit 7.

Although preferable examples of the present invention have been described above, the present invention is not limited to these examples, and various modifications and modifications can be made within the scope of the gist thereof.

4 Lens lens barrel 7 Imaging element unit 10 Fixed lens frame 11 Front fixed frame 12 Rear fixed frame 13 First zoom lens 14 Focus lens 15 Second zoom lens 20 First zoom lens moving frame 21 First zoom rack 22 First zoom motor 27 Focus lens moving frame 28 Focus rack 29 Focus motor 41 Impact detector

Claims (8)

The drive unit that rotates the reed screw and
A rack member having a tooth portion that meshes with the reed screw and moving along the reed screw when the reed screw is rotated by the drive unit that is coupled to a holding member that holds the lens.
Impact detector that detects impact force,
A control unit for driving the drive unit is provided.
When the impact force is detected by the impact detection unit, the control unit controls to drive the drive unit so that the holding member moves in the same direction as the holding member moves due to the impact force. An imaging device characterized by. When the impact value detected by the impact detection unit is equal to or higher than a predetermined value, the control unit sets the drive unit so that the holding member moves in the same direction as the holding member moves due to the impact force. The imaging device according to claim 1, wherein the image pickup apparatus is driven and controlled. The imaging device according to claim 1 or 2, wherein the control unit changes the driving amount of the driving unit according to an impact value detected by the impact detecting unit. The driving unit is provided for each of the plurality of holding members.
The imaging apparatus according to any one of claims 1 to 3, wherein the driving amounts of the plurality of driving units are set respectively. The drive unit that rotates the reed screw and
A rack member having a tooth portion that meshes with the reed screw and moving along the reed screw when the reed screw is rotated by the drive unit that is coupled to a holding member that holds the lens.
Impact detector that detects impact force,
A control unit for driving the drive unit is provided.
The control unit is an imaging device, characterized in that, when an impact is detected by the impact detection unit, the control unit controls to change the energization state of the drive unit. The imaging device according to claim 5, wherein the control unit turns off the energization of the drive unit when the impact value detected by the impact detection unit is equal to or higher than a predetermined value. The driving unit is provided for each of the plurality of holding members.
The imaging device according to claim 5 or 6, wherein the energized states of the plurality of driving units are set respectively. A housing for accommodating the holding member is provided inside.
The imaging device according to any one of claims 1 to 7, wherein the impact detection unit is fixed to the housing.

Images