JP7160391B2 - Distance detection device and imaging device - Google Patents

Description

The present invention relates to a distance detection device and an imaging device.

Japanese Unexamined Patent Application Publication No. 2002-200001 describes an imaging device that includes a distance measuring sensor that measures the distance to an object.
[Prior art documents]
[Patent Literature]
[Patent Document 1] JP-A-2021-32990

Differences in the positional relationship between the distance measuring sensor and the imaging device may cause variations in the accuracy of focusing control of the imaging device.

A distance detection device according to an aspect of the present invention may include a first detector that detects the positional relationship between the distance detection device and the imaging device. The distance detection device may include a second detection unit that detects the distance to the imaging target of the imaging device. The distance detection device may include an output unit that outputs first information indicating the positional relationship and second information indicating the distance to the imaging device.

The first detection unit may detect the distance and direction from a predetermined first portion of the distance detection device to a predetermined second portion of the imaging device as the positional relationship.

The second portion may be a portion on the mount surface of the lens mount of the imaging device.

The second portion may be a portion on the outer surface of the housing of the imaging device.

The distance detection device functions as a first detection unit and includes a first distance measuring sensor that detects the distance and direction to the object, and a second detection unit that functions as a second detection unit and detects the distance and direction to the object. and a ranging sensor.

The distance detection device may include a first ranging sensor that functions as a first detection section and a second detection section and detects the distance and direction to the object. The distance detection device switches the orientation of the first ranging sensor between a first orientation in which the first ranging sensor functions as a first detection unit and a second orientation in which the first ranging sensor functions as a second detection unit. A switching mechanism may be provided.

An imaging device according to an aspect of the present invention may be an imaging device including the distance detection device. The imaging device may include a circuit configured to acquire first information and second information from the distance detection device and perform focus control of the imaging device based on the first information and the second information. .

a circuit, based on the first information and third information indicating the flange back of the imaging device, derives a distance along the optical axis direction from a predetermined portion of the distance detection device to an imaging surface of the imaging device; Focusing control of the imaging device is performed based on the second information and the fourth information indicating the distance along the optical axis direction from the predetermined portion of the distance detection device to the imaging surface of the imaging device. may be

The imaging device may include a communication unit that communicates with the distance detection device wirelessly or via a wire.

The imaging device may include a coupling mechanism that mechanically couples the distance detection device and the imaging device.

According to one aspect of the present invention, it is possible to prevent variation in accuracy of focusing control of an imaging device due to a difference in positional relationship between a distance measuring sensor and an imaging device.

It should be noted that the above summary of the invention does not list all the features of the invention. Subcombinations of these feature groups can also be inventions.

1 is an external perspective view of an imaging device equipped with a distance measuring unit according to a first embodiment; FIG. It is the top view seen from the front side of an imaging device. FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. 2; FIG. 2 is an external perspective view of an imaging device without a distance measuring unit; FIG. 4 is a perspective view of the distance measuring unit as seen from the electrical contact side; 1 is a diagram showing an example of functional blocks of an imaging device according to a first embodiment; FIG. 1 is an example of an external perspective view of an imaging device equipped with a lens device and a distance measuring unit; FIG. FIG. 11 is an external perspective view of an imaging device according to a second embodiment; It is the top view seen from the front side of the imaging device concerning 2nd Embodiment. FIG. 10 is a cross-sectional view taken along the line AA shown in FIG. 9; FIG. 10 is a diagram showing an example of functional blocks of an imaging device according to a second embodiment; FIG. 4 is a flow chart showing an example of a procedure for calibrating an imaging device; 2 is an external perspective view of the imaging device and the distance measuring unit that are connected via a connection adapter, viewed from the front side. FIG. FIG. 4 is an external perspective view of the imaging device and the distance measuring unit that are connected via a connection adapter, viewed from the back side; FIG. 10 is an external perspective view of a distance measuring unit provided with fixing screws; It is a figure which shows an example of the external appearance of an unmanned aerial vehicle and a remote control.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. Also, not all combinations of features described in the embodiments are essential for the solution of the invention.

The claims, specification, drawings, and abstract contain material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by any person of these documents as they appear in the Patent Office files or records. However, otherwise, all copyrights are reserved.

FIG. 1 shows an external perspective view of an imaging device 100 equipped with a distance measuring unit 400 according to the first embodiment. FIG. 2 is a plan view of the imaging device 100 viewed from the front side. FIG. 3 is a cross-sectional view taken along line AA shown in FIG. FIG. 4 is an external perspective view of the imaging device 100 without the ranging unit 400 attached. FIG. 5 is a perspective view of the distance measuring unit 400 viewed from the electrical contact side. Distance measuring unit 400 is an example of a distance detection device.

The imaging device 100 includes a lens mount 140 for mounting the lens device 200 thereon. The ranging unit 400 includes a connection mechanism 430 for connecting to the imaging device 100 . Furthermore, the ranging unit 400 includes a ranging sensor 411 and a ranging sensor 412 that detect the distance and direction to the object. The ranging sensor 411 and the ranging sensor 412 may be a TOF (Time Of Flight) sensor (LiDAR) or a twin-lens camera.

As shown in FIG. 3, the imaging device 100 incorporates a substrate 102, a battery 104, and an image sensor 120. FIG. The board 102 mounts a control circuit such as a CPU for controlling the imaging apparatus 100 and a storage unit such as a memory. A battery 404 supplies power to the circuits on the substrate 102, the image sensor 120, and the like.

The ranging unit 400 incorporates a board 402 , a battery 404 , a ranging sensor 411 and a ranging sensor 412 . The board 402 is mounted with a control circuit such as a CPU for controlling the distance sensors 411 and 412 and a storage unit such as a memory.

The imaging device 100 includes an accessory shoe 106 for connecting the distance measuring unit 400 and an electrical contact 108 electrically connected to the distance measuring unit 400 on the outer surface of the housing, as shown in FIG. The distance measuring unit 400 includes a connecting mechanism 430 for connecting with the accessory shoe 106, and an electrical contact 432 electrically connected with the imaging device 100, as shown in FIG.

The imaging apparatus 100 moves the focus lens in the optical axis direction based on the distance to the imaging target detected by the distance measuring sensor 411, and executes focus control. In order to improve the accuracy of focus control, it is desirable to consider the distance L from the detection surface (imaging surface) of the distance measuring sensor 411 to the imaging surface of the image sensor 120 along the optical axis direction. That is, the imaging apparatus 100 can perform focus control using the distance to the imaging target to be focused on, i.e., the subject distance, by adding the distance L to the distance to the imaging target detected by the ranging sensor 411. desirable.

However, the lens mount 140 of the imaging device 100 differs depending on the mount standard of the lens device 200 . As shown in FIG. 3, the flange back, which indicates the distance F from the mount surface of the lens mount 140 to the imaging surface of the image sensor 120, differs depending on the mount standard. Also, the distance L varies depending on the position where the distance measuring unit 400 is attached to the imaging device 100 .

Therefore, in the first embodiment, the imaging apparatus 100 detects the distance and direction from the predetermined reference portion of the ranging sensor 412 to the predetermined reference portion of the lens mount 140 . to identify the positional relationship between the distance measuring unit 400 and the imaging device 100, and to identify the distance S from the distance measuring sensor 411 to the lens mount 140 along the optical axis direction. Then, the imaging apparatus 100 adds the predetermined distance F and the distance S to derive the distance L, and based on the distance L and the distance to the imaging target detected by the ranging sensor 411, Execute focus control.

FIG. 6 shows an example of functional blocks of the imaging device 100 according to the first embodiment. The imaging device 100 includes an image sensor 120 , an imaging control section 110 , a communication section 130 , a lens mount 140 and a memory 160 . The imaging device 100 further includes a lens device 200 and a distance measuring unit 400 . The lens device 200 is an interchangeable lens detachably attached to the imaging device 100 via the lens mount 140 . The distance measurement unit 400 is one of accessories detachably attached to the imaging device 100 via the connection mechanism 430 .

The image sensor 120 may be configured with CCD or CMOS. The image sensor 120 outputs image data of an optical image formed through a plurality of lenses 154 included in the lens device 200 to the imaging control section 110 . The imaging control unit 110 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like. The imaging control unit 110 generates an image by demosaicing the image signal output from the image sensor 120 . The imaging control section 110 stores the image in the memory 160 .

The communication section 130 is a communication interface for communicating with the ranging unit 400 . The communication section 130 may communicate with the ranging unit 400 by wire or wirelessly. The memory 160 may be a computer-readable recording medium and may include at least one of SRAM, DRAM, EPROM, EEPROM, and flash memory such as USB memory. The memory 160 stores programs and the like necessary for the imaging control section 110 to control the image sensor 120 and the like. The memory 160 may be provided inside the housing of the imaging device 100 . Memory 160 may store information regarding the mount standard of lens mount 140 . The memory 160 may store information indicating the distance F indicating the flange back as information on the mount standard. The memory 160 may store information indicating the positional relationship between the lens mount 140 and the image sensor 120 as information on mount standards. The memory 160 may store the coordinate values of the lens mount 140 and the image sensor 120 in the three-dimensional coordinates of the lens mount 140 as the positional relationship between the lens mount 140 and the image sensor 120 .

Multiple lenses 154 may function as a zoom lens, a varifocal lens, and a focus lens. At least some or all of the plurality of lenses 154 are arranged movably along the optical axis. The lens control unit 150 drives the lens driving unit 152 according to the lens control command from the imaging control unit 110 to move one or more lenses 154 along the optical axis direction. Lens control instructions are, for example, zoom control instructions and focus control instructions. The lens driver 152 may include a voice coil motor (VCM) that moves at least some or all of the multiple lenses 154 in the optical axis direction. The lens driver 152 may include an electric motor such as a DC motor, coreless motor, or ultrasonic motor. The lens drive unit 152 transmits the power from the electric motor to at least some or all of the plurality of lenses 154 via mechanical members such as cam rings and guide shafts, thereby driving at least some or all of the plurality of lenses 154 to light. It can be moved along an axis.

The ranging unit 400 includes a ranging controller 410 , a ranging sensor 411 , a ranging sensor 412 , a memory 414 and a communication section 420 . The ranging control unit 410 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like. Memory 414 may be a computer-readable recording medium and may include at least one of SRAM, DRAM, EPROM, EEPROM, and flash memory such as USB memory. The memory 414 may store information regarding the positional relationship between the distance measuring sensors 411 and 412 . The memory 414 stores coordinate values of a predetermined portion of the range sensor 411 and coordinate values of a predetermined portion of the range sensor 412 in the three-dimensional coordinate system of the range sensor 411 and the coordinate values of the range sensor 412, respectively. It may be stored as information about the positional relationship with the ranging sensor 412 . The predetermined portion of the distance measuring sensor 411 may be the detection surface (imaging surface) of the distance measuring sensor 411 . The predetermined portion of the distance measuring sensor 412 may be the detection surface (imaging surface) of the distance measuring sensor 412 .

The distance sensor 412 is an example of a first detection unit that detects the positional relationship between the distance detection device and the imaging device. The ranging sensor 411 is an example of a second detection unit that detects the distance to the imaging target of the imaging device. The ranging sensor 412 may detect the distance and direction of a predetermined portion of the imaging device. The distance measurement sensor 412 detects the distance and direction of a part with little error in the positional relationship with the image sensor 120 . The mounting surface of the lens mount 140 has no error in the positional relationship with the image sensor 120 . Therefore, the distance measuring sensor 412 is mounted on a predetermined portion on the mount surface of the lens mount 140, for example, a screw on the mount surface for fixing the lens mount 140 to the housing of the imaging device 100, an electrical sensor on the mount surface. A predetermined portion on the mount surface of the lens mount 140, such as a contact point, may be used to detect the distance and direction of that portion. The distance measurement sensor 412 may detect coordinate values of a predetermined portion on the mount surface of the lens mount 140 in the three-dimensional coordinate system of the distance measurement sensor 412 .

The communication unit 420 may output to the imaging device 100 first information indicating the distance to the imaging target of the imaging device and second information indicating the positional relationship between the ranging unit 400 and the imaging device 100 . Communication unit 420 is an example of an output unit.

The distance measurement control unit 410 calculates the coordinate values of a predetermined portion on the mount surface of the lens mount 140 in the three-dimensional coordinate system of the distance measurement sensor 412 and the coordinates of the distance measurement sensor 411 in the three-dimensional coordinate system of the distance measurement sensor 411. A predetermined position on the mount surface of the lens mount 140 in the three-dimensional coordinate system of the range sensor 411 is based on the coordinate values of the predetermined site and the coordinate values of the predetermined site of the range sensor 412 . Coordinate values of the part may be specified. The communication unit 420 converts the coordinate values of a predetermined portion on the mount surface of the lens mount 140 in the three-dimensional coordinate system of the distance measurement sensor 411 into second information indicating the positional relationship between the distance measurement unit 400 and the imaging device 100 . , may be output to the imaging device 100 .

The imaging control unit 110 obtains coordinate values of a predetermined portion on the mount surface of the lens mount 140 in the three-dimensional coordinate system of the distance measuring sensor 411 and predetermined values of the lens mount 140 in the three-dimensional coordinates of the lens mount 140. The coordinate values of the predetermined portion of image sensor 120 in the three-dimensional coordinate system of distance measuring sensor 411 may be specified based on the portion and the coordinate values of the predetermined portion of image sensor 120 . Thereby, the imaging control unit 110 can derive the distance L from the detection surface (imaging surface) of the distance measuring sensor 411 to the imaging surface of the image sensor 120 along the optical axis direction.

The imaging control unit 110 detects the position of the lens mount 140 in the predetermined three-dimensional coordinate system detected by the range sensor 412, the position of the range sensor 411 in the predetermined three-dimensional coordinate system, and the position of the range sensor 411 in the predetermined three-dimensional coordinate system. The distance L can be derived by specifying the positional relationship between the distance measurement sensor 411 and the image sensor 120 in the three-dimensional coordinate system from the positional relationship between the lens mount 140 and the image sensor 120 in the three-dimensional coordinate system.

The imaging control unit 110 acquires the distance to the imaging target detected by the ranging sensor 411 via the communication unit 420 and the communication unit 130 . The imaging control unit 110 specifies the position of the focus lens for focusing on the imaging target based on the distance to the imaging target detected by the ranging sensor 411 and the distance L, and the focus lens is positioned at the specified position. Focus control is executed by moving the .

The distance measurement sensor 412 may detect the distance and direction to a predetermined portion of the imaging device 100 other than the portion on the mount surface of the lens mount 140 . For example, as shown in FIG. 7, when the lens device 200 is attached to the imaging device 100, a mark 101 or the like attached to the outer surface of the housing of the imaging device 100 is used as a predetermined part of the imaging device 100. The distance and direction to the mark 101 may be detected. In this case, the memory 160 may store the coordinate values of the mark 101 and the image sensor 120 in the three-dimensional coordinate system of the imaging device 100 as the positional relationship between the mark 101 and the image sensor 120 .

FIG. 8 is an external perspective view of an imaging device 100 according to the second embodiment. FIG. 9 is a plan view of the imaging device 100 according to the second embodiment as seen from the front side. FIG. 10 is a cross-sectional view along line AA shown in FIG. FIG. 11 shows an example of functional blocks of an imaging device 100 according to the second embodiment.

The image capturing apparatus 100 according to the second embodiment is different from the image capturing apparatus 100 according to the first embodiment in that it includes a switching mechanism 413 and a range sensor 411 serves both as the first detection unit and the second detection unit. The switching mechanism 413 is a rotating mechanism that rotates the distance measuring sensor 411 around the pitch axis. A switching mechanism 413 switches the orientation of the ranging sensor 411 between a first orientation in which the ranging sensor 411 functions as a first detection unit and a second orientation in which the ranging sensor 411 functions as a second detection unit. The switching mechanism 413 may be a rotating mechanism that rotates the distance measurement sensor 411 in the direction of the arrow 415 to switch from the second posture to the first posture. The switching mechanism 413 may be a rotating mechanism that manually rotates the distance measurement sensor 411 to switch between the first orientation and the second orientation. Alternatively, the switching mechanism 413 may be a rotating mechanism that includes a drive motor and automatically rotates the distance measuring sensor 411 to switch between the first orientation and the second orientation.

FIG. 12 is a flow chart showing an example of a procedure for calibrating the imaging device 100. As shown in FIG.

When the power of the imaging device 100 is turned on with the lens device 200 removed from the imaging device 100, the distance measuring sensor 412 or the distance measuring sensor 411 in the first posture detects the reference portion of the lens mount 140, for example, the lens. The distance and orientation to at least two fixing screws of the mount 140 may be detected. The distance measurement control unit 410 specifies the positional relationship between the distance measurement sensor 411 and the lens mount 140 as the positional relationship between the distance measurement unit 400 and the imaging device 100 based on the distance and direction to the reference portion of the lens mount 140. . Then, the imaging control section 110 acquires information (three-dimensional coordinate information) indicating the positional relationship between the imaging device 100 and the ranging unit 400 from the ranging unit 400 (S100). The imaging control unit 110 acquires information (three-dimensional coordinate information) indicating the positional relationship between the lens mount 140 and the image sensor 120 as information indicating the flange back by referring to the memory 160 (S102).

Based on the positional relationship between the ranging unit 400 (ranging sensor 411) and the imaging device 100 (lens mount 140) and the positional relationship between the lens mount 140 and the image sensor 120, the imaging control unit 110 operates the ranging sensor. A distance L in the direction along the optical axis from 411 to the image sensor 120 is derived (S104). This completes the calibration before imaging.

When the imaging device 100 captures an image of an object to be imaged, the imaging control section 110 acquires information indicating the distance to the object to be imaged detected by the distance measuring sensor 411 from the distance measuring unit 400 . The imaging control unit 110 identifies the position of the focus lens for focusing on the imaging target based on the distance L and the distance to the imaging target. Then, the imaging control unit 110 executes focus control by moving the focus lens to the specified position via the lens control unit 150 .

The imaging device 100 may be mounted on a gimbal, which is a support mechanism capable of controlling the attitude of the imaging device 100 . In this case, first, with the lens device 200 and the distance measuring unit 400 attached to the imaging device 100, the imaging device 100 is attached to a gimbal, and the balance of the gimbal is adjusted. That is, the position of the imaging device 100 with respect to the gimbal is adjusted so that the center of gravity of the imaging device 100 to which the lens device 200 and the distance measuring unit 400 are attached falls within a predetermined positional range with respect to the gimbal. Next, the rotation axis of the gimbal is locked and the lens device 200 is removed from the imaging device 100 . Then, the calibration shown in FIG. 12 is executed. After the calibration is completed, the lens device 200 is mounted on the imaging device 100 again, and then the rotation shaft of the gimbal is unlocked.

In each of the above-described embodiments, an example in which the imaging device 100 and the distance measuring unit 400 communicate via electrical contacts has been described. However, the imaging device 100 and the ranging unit 400 may communicate wirelessly or via a wire.

For example, as shown in FIGS. 13 and 14, the imaging device 100 and the distance measuring unit 400 may be fixed to the connection adapter 180 to fix the positional relationship between the imaging device 100 and the distance measuring unit 400. FIG. The ranging unit 400 may be provided with a fixing screw 436 as shown in FIG. 15 and fixed to the connection adapter 180 with the fixing screw 436 . The connection cable 182 is connected to a connection terminal provided on the housing of the imaging device 100 and a connection terminal provided on the housing of the ranging unit 400 . Thereby, the imaging device 100 and the ranging unit 400 may communicate with each other via the connection cable 182 .

As described above, according to the imaging apparatus 100 according to each embodiment, even when the distance measurement unit 400 is attached to an imaging apparatus having a different mount standard, the distance from the imaging surface of the image sensor 120 to the imaging target can be derived with high accuracy. Focus control can be executed. As a result, it is possible to suppress variation in accuracy of focus control of the imaging device 100 due to a difference in positional relationship between the imaging device 100 and the distance measuring unit 400 .

The imaging device 100 as described above may be mounted on a mobile object. The imaging device 100 may be mounted on an unmanned aerial vehicle (UAV) as shown in FIG. 16 . The UAV 10 may comprise a UAV body 20 , a gimbal 50 , a plurality of imaging devices 60 and an imaging device 100 . The gimbal 50 and imaging device 100 are an example of an imaging system. UAV 10 is an example of a mobile object propelled by a propulsion unit. The moving object is a concept that includes not only UAVs but also flying objects such as other aircraft that move in the air, vehicles that move on the ground, ships that move on water, and the like.

The UAV body 20 comprises a plurality of rotor blades. A plurality of rotor blades is an example of a propulsion unit. The UAV body 20 causes the UAV 10 to fly by controlling the rotation of multiple rotor blades. The UAV body 20 uses, for example, four rotor blades to fly the UAV 10 . The number of rotor blades is not limited to four. Alternatively, UAV 10 may be a fixed-wing aircraft that does not have rotary wings.

The imaging device 100 is an imaging camera that captures an image of a subject included in a desired imaging range. The gimbal 50 rotatably supports the imaging device 100 . The gimbal 50 is an example of a support mechanism. For example, the gimbal 50 supports the imaging device 100 rotatably about the pitch axis using an actuator. The gimbal 50 supports the imaging device 100 so as to be rotatable about each of the roll axis and the yaw axis using actuators. The gimbal 50 may change the attitude of the imaging device 100 by rotating the imaging device 100 around at least one of the yaw axis, the pitch axis, and the roll axis.

The multiple imaging devices 60 are cameras for sensing that capture images of the surroundings of the UAV 10 in order to control the flight of the UAV 10 . Two imaging devices 60 may be provided at the front, which is the nose of the UAV 10 . Two other imaging devices 60 may also be provided on the underside of the UAV 10 . The two imaging devices 60 on the front side may be paired and function as a so-called stereo camera. The two imaging devices 60 on the bottom side may also form a pair and function as a stereo camera. Three-dimensional spatial data around the UAV 10 may be generated based on the images captured by the multiple imaging devices 60 . The number of imaging devices 60 provided in the UAV 10 is not limited to four. The UAV 10 only needs to have at least one imaging device 60 . UAV 10 may include at least one imaging device 60 on each of the nose, tail, sides, bottom, and ceiling of UAV 10 . The angle of view that can be set with the imaging device 60 may be wider than the angle of view that can be set with the imaging device 100 . Imaging device 60 may have a single focus lens or a fisheye lens.

The remote control device 300 communicates with the UAV 10 to remotely control the UAV 10 . Remote operator 300 may communicate with UAV 10 wirelessly. The remote control device 300 transmits to the UAV 10 instruction information indicating various commands related to the movement of the UAV 10 such as ascending, descending, accelerating, decelerating, forward, backward, and rotating. The instruction information includes, for example, instruction information for increasing the altitude of the UAV 10 . The indication information may indicate the altitude at which UAV 10 should be located. UAV 10 moves to the altitude indicated by the instruction information received from remote control device 300 . The instructional information may include a climb command to raise the UAV 10 . The UAV 10 ascends while accepting the ascend command. Even if the UAV 10 receives a climb command, if the altitude of the UAV 10 has reached the upper limit altitude, the climb may be restricted.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the description of the scope of claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

The execution order of each process such as actions, procedures, steps, and stages in the devices, systems, programs, and methods shown in the claims, the specification, and the drawings is particularly "before", "before etc., and it should be noted that they can be implemented in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the specification, and the drawings, even if the description is made using "first," "next," etc. for the sake of convenience, it means that it is essential to carry out in this order. not a thing

10 UAVs
20 UAV body 50 Gimbal 60 Imaging device 100 Imaging device 101 Mark 102 Board 104 Battery 106 Accessory shoe 108 Electrical contact 110 Imaging control unit 120 Image sensor 130 Communication unit 140 Lens mount 150 Lens control unit 152 Lens driving unit 154 Lens 160 Memory 180 Connection Adapter 182 Connection cable 200 Lens device 300 Remote control device 400 Distance measurement unit 402 Board 404 Battery 410 Distance measurement control unit 411 Distance measurement sensor 412 Distance measurement sensor 413 Switching mechanism 414 Memory 420 Communication unit 430 Connection mechanism 432 Electric contact 436 Fixing screw

Claims (11)

A distance detection device,
a first detection unit that detects the positional relationship between the distance detection device and the imaging device;
a second detection unit that detects a distance to an imaging target of the imaging device;
an output unit that outputs first information indicating the positional relationship and second information indicating the distance to the imaging device ;
The distance detection device, wherein the first detection unit detects a distance and a direction from a predetermined first portion of the distance detection device to a predetermined second portion of the imaging device as the positional relationship . 2. The distance detection device according to claim 1 , wherein said second portion is a portion on a mount surface of a lens mount of said imaging device. 2. The distance detection device according to claim 1 , wherein said second portion is a portion on an outer surface of a housing of said imaging device. A first ranging sensor that functions as the first detection unit and detects the distance and direction to an object;
2. The distance detecting device according to claim 1, further comprising a second ranging sensor that functions as said second detecting section and detects a distance and direction to an object. A distance detection device,
a first ranging sensor that functions as a first detection unit that detects the positional relationship between the distance detection device and the imaging device and that detects the distance and direction to an object;
a second ranging sensor that functions as a second detection unit that detects the distance to the imaging target of the imaging device and that detects the distance and direction to the target;
an output unit that outputs first information indicating the positional relationship and second information indicating the distance to the imaging device;
A distance detection device comprising: A first ranging sensor that functions as the first detection unit and the second detection unit and detects the distance and direction to an object;
The orientation of the first ranging sensor is switched between a first orientation in which the first ranging sensor functions as the first detection unit and a second orientation in which the first ranging sensor functions as the second detection unit. The distance detection device according to claim 1, comprising a switching mechanism. A distance detection device,
Functions as a first detection unit that detects the positional relationship between the distance detection device and the imaging device, and a second detection unit that detects the distance to the imaging target of the imaging device, and detects the distance and direction to the target object. a first ranging sensor;
an output unit that outputs first information indicating the positional relationship and second information indicating the distance to the imaging device;
The orientation of the first ranging sensor is switched between a first orientation in which the first ranging sensor functions as the first detection unit and a second orientation in which the first ranging sensor functions as the second detection unit. switching mechanism and
A distance detection device comprising: An imaging device comprising the distance detection device according to any one of claims 1 to 7 ,
obtaining the first information and the second information from the distance detection device;
and a circuit configured to perform focus control of the imaging device based on the first information and the second information. Based on the first information and the third information indicating the flange back of the imaging device, the circuit extends along the optical axis direction from a predetermined portion of the distance detection device to the imaging surface of the imaging device. derive the distance,
Focusing control of the imaging device is executed based on the second information and fourth information indicating a distance along the optical axis direction from a predetermined portion of the distance detection device to an imaging surface of the imaging device. 9. The imaging device of claim 8 , configured to. 9. The imaging device according to claim 8 , further comprising a communication unit that communicates with the distance detection device wirelessly or via a wire. 9. The imaging device according to claim 8 , comprising a coupling mechanism for mechanically coupling said distance detection device and said imaging device.

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