JP2020190600A - Imaging apparatus - Google Patents

Abstract

To provide an imaging apparatus capable of tilting an imaging element in a vertical direction and in a horizontal direction, without increasing size and cost.SOLUTION: The imaging apparatus includes an imaging element, a first cam which inclines the imaging element in a first direction with respect to a surface orthogonal to the optical axis of an imaging optical system, a second cam which inclines the imaging element in a second direction different from the first direction with respect to the surface orthogonal to the optical axis of the imaging optical system, and drive means which rotationally drives the first cam and the second cam.SELECTED DRAWING: Figure 3

Description

The present invention relates to an imaging device.

Conventionally, a surveillance camera may be installed in a high place such as a ceiling, and the optical axis of the camera may be directed diagonally downward to photograph a person passing by a road, or to photograph a car or the number plate of the car. .. In this case, since the optical axis of the camera points diagonally downward, the focus plane perpendicular to the optical axis that is in focus when taking an image and the subject that is actually to be imaged, such as the ground extending in the horizontal direction, The imaging planes do not match. Therefore, the in-focus area becomes a part of the screen, and the other areas are out of focus. To solve such a problem, a camera that widens the depth of field range by so-called tilt photography in which the lens or the image sensor is relatively tilted is known.

However, there are various cases where the imaging surface of the subject to be imaged is tilted in the vertical direction or in the horizontal direction with respect to the camera. Therefore, depending on the installation state of the camera, the range to be photographed and the direction to tilt the lens or the image sensor may not always match. In that case, it is desired to be able to shoot in a plurality of directions as well as in a predetermined direction.

In Patent Document 1, a tilting mechanism is provided in the image pickup device, and the tilting mechanism includes a rotation mechanism that is rotated in the image pickup surface of the image pickup device and a tilt mechanism as a tilt mechanism that is tilted in a plane perpendicular to the image pickup surface. The tilt mechanism tilts the imaging device in a plane perpendicular to the imaging surface. Further, when the tilt mechanism is operated after rotating the rotation mechanism by 90 degrees, it is possible to tilt the image pickup device in a plane perpendicular to the one direction, and the vertical and horizontal tilting operations are realized. I'm letting you.

Japanese Patent No. 3718285

In the prior art disclosed in Patent Document 1 described above, the tilting mechanism includes a rotation mechanism that is rotated in the imaging surface of the imaging device and a tilting mechanism as a tilting mechanism that is tilted in a plane perpendicular to the imaging surface. It is composed of. Therefore, drive means are required for each of the rotation mechanism and the tilt mechanism.

In addition, as the number of drive means increases, a driver for driving the drive source and a flexible cable for inputting electric power and signals to the drive source are required, which leads to an increase in the cost of the image pickup device and further increases the number of parts. That much space may be required.

Therefore, an object of the present invention is to provide an image pickup apparatus capable of tilting the image pickup device in the vertical direction and the horizontal direction without increasing the size and cost.

In order to achieve the above object, the image pickup device of the present invention includes an image pickup element, a first cam that tilts the image pickup element in a first direction with respect to a plane orthogonal to the optical axis of the image pickup optical system, and the image pickup device. A second cam that is tilted in a second direction different from the first direction with respect to a plane orthogonal to the optical axis of the image pickup optical system, and a driving means that rotationally drives the first cam and the second cam. Be prepared.

According to the present invention, it is possible to provide an image pickup apparatus capable of tilting an image pickup device in the vertical direction and the horizontal direction without increasing the size and cost.

Block diagram of the configuration of the monitoring system according to the first embodiment of the present invention An exploded perspective view of the image sensor unit according to the first embodiment of the present invention. Perspective view and front view of the image sensor unit according to the first embodiment of the present invention. Cam locus curve diagram of a cam member according to the first embodiment of the present invention Side view of the image sensor unit in the lateral tilt according to the first embodiment of the present invention. Side view of the image sensor unit in the vertical tilt according to the first embodiment of the present invention. Front view of the image sensor unit according to the second embodiment of the present invention. Side view of the image sensor unit according to the second embodiment of the present invention. Cam locus curve diagram of a cam member according to a second embodiment of the present invention A flowchart showing control of the image sensor unit according to the second embodiment of the present invention. Explanatory drawing of evaluation area which concerns on 2nd Embodiment of this invention Explanatory drawing which shows focus evaluation value which concerns on 2nd Embodiment of this invention The figure which shows the detection result of the focus position which concerns on 2nd Embodiment of this invention.

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

(First Embodiment)
<Overview of surveillance camera system>
First, the monitoring system will be described with reference to FIG. FIG. 1 is a block diagram of an example of the configuration of the monitoring system according to the first embodiment of the present invention. The surveillance system includes a surveillance camera 1 as an imaging device and an operation unit 112 that remotely operates the surveillance camera 1.

The surveillance camera 1 includes a lens barrel 4 as an example of an image pickup optical system, an image sensor unit 5, a zoom drive unit 101, a focus drive unit 102, and an image sensor drive unit 103. Further, the surveillance camera 1 includes an AGC 104, an AD converter 105, a camera signal processing unit 106, an evaluation value calculation unit 109, a tilt angle calculation unit 110, a tilt zoom focus control unit 111, and a memory 118. To be equipped. The lens barrel 4 has a zoom lens group 6 and a focus lens group 7, and the image sensor unit 5 includes an image sensor 8. The image sensor 8 converts the light imaged by the lens barrel 4 into an electric signal. The analog electric signal (imaging signal) output from the image pickup element 8 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 1 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 a plurality of images, and tilt control or autofocus (hereinafter, AF). Calculate the evaluation value used in. 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 tilt angle calculation unit 110 calculates the tilt direction and the tilt angle by using the evaluation value of each evaluation frame acquired by the evaluation value calculation unit 109.

The tilt / zoom / focus control unit 111 refers to the zoom drive unit 101 and the focus drive unit 102 with respect to the zoom setting position and the focus setting position, respectively, based on the control command transmitted from the operation unit 112 via the communication unit 107. To instruct. Further, the tilt / zoom / focus control unit 111 refers to the image sensor drive unit 103 based on the control command transmitted from the operation unit 112 via the communication unit 107 and the calculation result from the tilt angle calculation unit 110. Indicate the tilt setting position.

The zoom drive unit 101 controls the position of the zoom lens group 6 based on the zoom setting position instructed by the tilt / zoom / focus control unit 111. The focus drive unit 102 controls the position of the focus lens group 7 based on the focus setting position instructed by the tilt / zoom / focus control unit 111. The image sensor driving unit 103 tilts the image sensor 8 with respect to a plane orthogonal to the optical axis based on the setting of the tilt angle instructed by the tilt / zoom / focus control unit 111.

The memory 108 stores the drive amounts of the zoom lens group 6, the focus lens group 7, and the image sensor drive unit 103 based on the signal instructed by the tilt / zoom / focus control unit 111. Further, the memory 108 stores a correlation table between the driving amount of the image sensor driving unit 103 and the state such as the inclination of the image sensor 8.

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 1 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 1 and a GUI that guides the operation of the operator of the operation unit 112.

<Structure of image sensor unit 5>
Next, the configuration of the image sensor unit 5 will be described with reference to FIGS. 2 and 3. FIG. 2 is an exploded perspective view of the image sensor unit 5, FIG. 3 (a) is a perspective view of the image sensor unit 5, and FIG. 3 (b) is a front view of the image sensor unit 5. Further, in FIGS. 2 and 3, 10 indicates the optical axis of the lens barrel 4. The direction parallel to the optical axis is the X-axis, the directions perpendicular to it are the Y-axis and the Z-axis, respectively, and the minus X direction is the subject side.

The image sensor 8 is soldered to the circuit board 74 and electrically connected to the circuit on the circuit board 74. A sensor FPC (not shown) is joined to the circuit board 74, and is connected to a drive circuit board (not shown) through the wiring of the sensor FPC.

The sensor plate 9 as a holding member holds the image pickup element 8 and the circuit board 74, and the image pickup element 8 is arranged in the opening 9a. The sensor plate 9 includes a first pin 11 and a second pin 12 on the side surface. The first pin 11 as the first projecting portion is provided on the side surface of the sensor plate 9 extending in the Y direction, and projects in the −Z direction substantially perpendicular to the optical axis. The second pin 12 as the second projecting portion is provided on the side surface of the sensor plate 9 extending in the Z direction, and projects in the + Y direction substantially perpendicular to the optical axis. The guide member 13 is a member that guides the first pin 11 and the second pin 12, and has a first guide groove 13a and a second guide groove 13b extending in a direction substantially parallel to the optical axis. The first pin 11 is guided in a direction substantially parallel to the optical axis by the first guide groove 13a of the guide member 13. The second pin 12 is guided in a direction substantially parallel to the optical axis by the second guide groove 13b of the guide member 13.

The first cam 14 is rotatable about a central axis 14a substantially parallel to the optical axis 10, and is provided with a cam surface 14b around it. The first pin 11 is in contact with the cam surface 14b, and when the first cam 14 rotates, the first pin 11 is moved in a direction substantially parallel to the optical axis. As a result, the image sensor 8 can rotate in the lateral direction (horizontal direction, horizontal direction) as the first direction. Further, the maximum rotation amount of the image sensor 8 is changed depending on the shape of the cam surface 14b of the first cam 14.

The second cam 15 is rotatable about a central axis 15a substantially parallel to the optical axis 10 and is provided with a cam surface 15b around it. A second pin 12 is in contact with the cam surface 15b, and when the second cam 15 rotates, the second pin 12 is moved in a direction substantially parallel to the optical axis. As a result, the image sensor 8 can rotate in the vertical direction (vertical direction, vertical direction) as the second direction. Further, the maximum rotation amount of the image sensor 8 is changed depending on the shape of the cam surface 15b of the second cam 15.

The sensor plate 9 is urged by a spring (not shown) in the direction opposite to the subject side, and a portion different from the portion where the first pin 11 and the second pin 12 are provided is formed on the abutting member 16. It is in contact. The abutting member 16 regulates the movement of the sensor plate 9 in the optical axis direction. The contact portion of the abutting member 16 with the sensor plate 9 has a spherical shape. The spherical shape prevents the sensor plate 9 from being caught even if the posture is changed. The sensor plate 9 comes into contact with the cam surface 14b of the first cam 14, the cam surface 15b of the second cam 15, and the abutting member 16. Thereby, the posture of the sensor plate 9 is determined. Further, since the image sensor 8 is integrated with the sensor plate 9, the posture of the image sensor 8 follows the posture of the sensor plate 9.

The motor 17 has a structure in which the motor gear 17b is rotationally driven around the motor shaft 17a, and the motor gear 17b is the outer peripheral portion 14c of the first cam 14 and the outer peripheral portion 15c of the second cam 15, respectively, and the first belt 18 and the motor 17. It is connected by the second belt 19. Therefore, the first cam 14 and the second cam 15 are simultaneously driven by the motor 17 so as to rotate about the central shaft 14a and the central shaft 15a, respectively. Further, the first cam 14 and the second cam 15 have the same reduction ratio with respect to the output of the motor 17, and are driven in the same cycle.

<Details of tilt drive of the image sensor unit 5>
Next, the details of the tilt drive of the image sensor unit 5 will be described. FIG. 4 is a cam locus curve diagram when the first cam 14 and the second cam 15 are viewed from the outer peripheral side, FIG. 4 (a) is a cam locus curve diagram of the first cam 14, and FIG. 4 (b). Is a cam locus curve diagram of the second cam 15. FIG. 5 is a diagram showing a state of the image sensor unit 5 when the first cam 14 is rotated, and is a view seen from the minus Y-axis direction.

First, the lateral tilt (horizontal tilt) of the image sensor 8 will be described with reference to FIGS. 4A and 5. As shown in FIG. 4A, the points and regions on the cam surface 14b of the first cam 14 are referred to as a point 14c, a region 14d, a point 14e, a region 14f, and a region 14g. The area 14d and the area 14f are moving areas, and the area 14g is a non-moving area.

Since the first pin 11 is urged to abut on the cam surface 14b, as the first cam 14 rotates, it moves on the cam surface 14b, and when the first cam 14 rotates, the point 14c, The area 14d, the point 14e, the area 14f, and the area 14g move in this order. In the state shown in FIG. 5A, the first pin 11 is at the point 14c, and the image sensor 8 is perpendicular to the optical axis 10. In the state shown in FIG. 5B, the first pin 11 is at the point 14e, and the image sensor 8 is tilted with respect to the optical axis 10. In the state shown in FIG. 5C, the first pin 11 is in the region 14g, and the image sensor 8 is perpendicular to the optical axis 10. As the first cam 14 rotates, the sensor plate 9 rotates about the contact portion with the abutting member 16 as a fulcrum, so that the image sensor 8 tilts more from the state perpendicular to the optical axis 10. Then, after reaching the state shown in FIG. 5 (b) where the inclination is maximum, the inclination decreases, and the state becomes a vertical state without inclination as shown in FIG. 5 (c).

Next, the vertical tilt (vertical tilt) of the image sensor 8 will be described with reference to FIGS. 4 (b) and 6. FIG. 6 is a diagram showing a state of the image sensor unit 5 when the second cam 15 is rotated, and is a view seen from the Z-axis direction. As shown in FIG. 4B, the points and regions on the cam surface 15b of the second cam 15 are referred to as a point 15c, a region 15d, a region 15e, a point 15f, and a region 15g. The area 15d is a non-moving area, the area 15e, and the area 15g is a moving area.

Since the second pin 12 is urged to abut on the cam surface 15b, as the second cam 15 rotates, it moves on the cam surface 15b, and when the second cam 15 rotates, the point 15c, The area 15d, the area 15e, the point 15f, and the area 15g move in this order.

In the state shown in FIG. 6A, the second pin 12 is in the region 15d, and the image sensor 8 is perpendicular to the optical axis 10. In the state shown in FIG. 6B, the second pin 12 is at the point 15f, and the image sensor 8 is tilted with respect to the optical axis 10. In the state shown in FIG. 6C, the second pin 12 is at the point 15c, and the image pickup element 8 is perpendicular to the optical axis 10. As the second cam 15 rotates, the sensor plate 9 rotates about the contact portion with the abutting member 16 as a fulcrum, and the image sensor 8 tilts more and more from the state perpendicular to the optical axis 10. Then, after reaching the state shown in FIG. 6 (b) where the inclination is maximum, the inclination decreases, and the state becomes a vertical state without inclination as shown in FIG. 6 (c).

Next, the relationship between the first cam 14, the second cam 15, and the image sensor 8 will be described with reference to FIGS. 4 (a) and 4 (b).

The first cam 14 and the second cam 15 have the same peripheral length and are driven at the same time in the same cycle. Therefore, when the first pin 11 is located at the point 14c, the second pin 12 is located at the point 15c. When the first pin 11 is located in the region 14d or the region 14f, the second pin 12 is located in the region 15d. When the first pin 11 is located in the region 14g, the second pin 12 is located in the region 15e or 15g.

When the first pin 11 and the second pin 12 are located at the points 14c and 15c, respectively, the image sensor 8 is perpendicular to the optical axis 10. That is, it is a state in which the image sensor 8 is not fanned.

When the first pin 11 is located in the region 14d or 14f and the second pin 12 is located in the region 15d, the image sensor 8 is tilted with respect to the Y-axis but not with respect to the Z-axis. It has become. That is, it is in a lateral tilting state in which the image sensor 8 is centered on the Y-axis.

When the first pin 11 is located in the region 14 g and the second pin 12 is located in the region 15e or 15 g, the image sensor 8 is tilted with respect to the Z axis but not with respect to the Y axis. It has become. That is, it is in a vertical tilted state in which the image sensor 8 is centered on the Z axis.

In this way, due to the rotation phases of the first cam 14 and the second cam 15, the image sensor 8 is in a state perpendicular to the optical axis 10, tilted only with respect to the Y axis (vertical tilt state), and with respect to the Z axis. It will be in a tilted state (horizontal tilting state). In this way, it is possible to change the amount of inclination with respect to the Y-axis and the Z-axis depending on the rotation phase of the cam.

Therefore, by rotationally driving the two cams at the same time, the image sensor 8 can be tilted by an arbitrary amount in any of the two different directions from the vertical state of the optical axis.

As described above, the surveillance camera 1 of the present embodiment can perform tilting photography in which the image sensor 8 is tilted in different biaxial directions by one motor 17. Therefore, it is possible to provide a surveillance camera 1 capable of tilting the image sensor 8 in the vertical direction and the horizontal direction without increasing the size and cost.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. 7 to 13. In the second embodiment, the image sensor 8 can be tilted by an arbitrary amount with respect to both the Y-axis and the Z-axis at the same time. That is, it is possible to combine the horizontal tilt and the vertical tilt of the image sensor 8. The second embodiment is different in that the second cam 15 of the first embodiment becomes the third cam 51 and the second belt 19 becomes the third belt 52. In the second embodiment, the second cam in the claim corresponds to the third cam 51. FIG. 7 is a front view of the image sensor unit 5 of the second embodiment. FIG. 8 is a side view of the image sensor unit 5 of the second embodiment. 9 is a cam locus curve diagram of the first cam 14 and the third cam 51, FIG. 9A is a cam locus curve diagram of the first cam 14, and FIGS. 9B, 9C, and 9D are the th. It is a cam locus curve diagram of 3 cam 51. Note that FIG. 9C is a diagram showing the cam position after the third cam 51 makes one rotation from the state of FIG. 9B. That is, it is a figure when the third cam 51 rotates in the second lap during the rotation of the first lap of the first cam 14. FIG. 9D is a diagram showing a cam position after the third cam 51 has rotated twice from the state of FIG. 9B.

The outer peripheral diameter of the third cam 51 is smaller than the outer peripheral diameter of the first cam 14. Therefore, the drive cycle of the motor 17 is different from that of the first cam 14. Details will be described below.

As shown in FIG. 9B, the points and regions on the cam surface 51b of the third cam 51 are referred to as a point 51c, a region 51d, a region 51e, a point 51f, and a region 51g. As shown in FIG. 9B, the point on the cam surface 51b of the third cam 51 with respect to the point 14h on the cam surface 14b of the first cam 14 shown in FIG. 9A is the point 51j in the optical axis direction. Has no movement amount. In the case shown in FIG. 9 (c), the point 51k corresponds and moves by a distance of 51 m in the optical axis direction, and in the case of FIG. 9 (d), the point 51n corresponds and moves by a distance of 51 p in the optical axis direction. Will be done. Since the circumference of the third cam 51 is different from that of the first cam 14 by a distance of 51i, the relative phases of the cam surface 14b and the cam surface 51b shift as the first cam 14 and the third cam 51 rotate. I will go. Therefore, when the first cam 14 and the third cam 51 are rotated at the same time, their respective phases change relatively. Therefore, the image sensor 8 can be tilted by an arbitrary amount at the same time with respect to both the Y-axis and the Z-axis. That is, it is possible to combine the horizontal tilt and the vertical tilt of the image sensor 8.

The tilting direction and amount of the image sensor 8 are related to the number of steps in which the motor 17 is driven from the states shown in FIGS. 9A and 9B as initial states. By setting a table in which the drive steps from the initial stage and the tilt direction and amount of the image sensor 8 are associated with each other, and counting and storing the number of drive steps of the motor 17 from the initial stage, the tilt direction of the image sensor 8 is stored. And the amount can be controlled.

Next, the processing flow of this embodiment will be described. FIG. 10 is a flowchart showing the control of the present embodiment. FIG. 11 is an explanatory diagram of the evaluation area. FIG. 12 is an explanatory diagram showing a focus evaluation value. FIG. 13 is a diagram showing a detection result of the focus position. The vertical axis of FIGS. 12 and 13 is the evaluation value, and the horizontal axis is the position of the focus lens 7.

In S201, a focus scan is performed. The focus scan is an operation in which the focus lens 7 is driven by the focus drive unit 102 to detect a focus position where the focus evaluation value for each of a plurality of evaluation regions provided in the captured image peaks. When the focus lens 7 is driven in the direction of the optical axis, there is a position where the focus evaluation value has the highest peak value, and the peak position becomes the most focused position. The focus evaluation value is a numerical value of the contrast state of an image at a predetermined spatial frequency, and the higher the value, the clearer the contrast.

In S202, the tilt angle calculation unit 110 sets the tilt direction of the image sensor 8 targeted by the tilt angle calculation unit 110 based on the focus position information at which the focus evaluation value for each evaluation region calculated in S201 peaks. Calculate the amount. Here, a method of calculating the tilt direction and the amount of the target image sensor 8 will be described.

A focus scan was performed, and the detection results of the focus positions in the evaluation area 4 and the evaluation area 6 are shown in FIGS. 13 (a) and 13 (b), respectively. The focus position where the focus evaluation value peaks in the evaluation area 4 is the position 62, and the focus position where the focus evaluation value peaks in the evaluation area 6 is the position 61. At this time, since the image sensor 8 is tilted with respect to the subject by the amount corresponding to the difference between the positions 61 and 62, if the position of the evaluation region is also taken into consideration and tilted by the amount that cancels this difference, both are in focus. Will get. Although the adjustment is made in the uniaxial direction of the image sensor 8, the evaluation value may be detected for each of the nine regions, the degree of inclination in the biaxial direction may be grasped, and the adjustment in the biaxial direction may be performed.

In S203, the tilt angle calculation unit 110 compares the current drive step position of the motor 17 stored in the memory 108 with the tilt direction and amount of the target image sensor 8 calculated in S202 of the motor 17. Calculate the drive direction and the number of drive steps.

In S204, the image sensor driving unit 103 drives the motor 17 according to the conditions calculated in S203.

By performing the above control, even if the image pickup surface of the subject to be imaged has a tilt that is a combination of the vertical and horizontal directions of the image sensor 8, the image sensor 8 can be tilted according to the tilt. Is possible.

In the present embodiment, the outer peripheral diameter of the third cam 51 is smaller than the outer peripheral diameter of the first cam 14, but the outer peripheral diameter of the first cam 14 may be smaller than the outer peripheral diameter of the third cam 51. The lens barrel 4 may be an interchangeable lens type that is removable from the image sensor unit 5.

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

1 Surveillance camera 4 Lens lens barrel 5 Image sensor unit 6 Zoom lens group 7 Focus lens group 8 Image sensor 9 Sensor plate 10 Optical axis 11 1st pin 12 2nd pin 13 Guide member 14 1st cam 15 2nd cam 16 Butt member 17 Motor 18 1st belt 19 2nd belt 51 3rd cam 52 3rd belt

Claims (7)

With the image sensor
A first cam that inclines the image sensor in the first direction with respect to a plane orthogonal to the optical axis of the image pickup optical system.
A second cam that inclines the image sensor in a second direction different from the first direction with respect to a plane orthogonal to the optical axis of the image pickup optical system.
An imaging device including a driving means for rotationally driving the first cam and the second cam. A holding member having a first protruding portion that comes into contact with the first cam and a second protruding portion that comes into contact with the second cam and holds the image sensor.
It is characterized by including a first guide groove for guiding the first protruding portion in a direction parallel to the optical axis and a guide member having a second guide groove for guiding the second protruding portion in a direction parallel to the optical axis. The imaging device according to claim 1. The cam surface of the first cam and the cam surface of the second cam are characterized by having a moving region for moving each of the first protruding portion and the second protruding portion in the optical axis direction and a non-moving region for not moving the first protruding portion and the second protruding portion. The imaging device according to claim 2. The first cam and the second cam have the same rotation cycle.
When the first protruding portion is located in the moving region of the cam surface of the first cam, the second protruding portion is located in the non-moving region of the cam surface of the second cam, and the first protruding portion is the said. The imaging according to claim 2 or 3, wherein the second protrusion is located in the moving region of the cam surface of the second cam when it is located in the non-moving region of the cam surface of the first cam. apparatus. The first cam and the second cam have different cycles of one rotation, and when the second cam rotates on the second lap during the rotation of the first lap of the first cam,
When the first protruding portion is located in the moving region of the cam surface of the first cam, the second protruding portion is located in the non-moving region of the cam surface of the second cam, and the first protruding portion is the said. When the second protruding portion is located in the non-moving region of the cam surface of the first cam, the first protruding portion is of the first cam from the first state in which the moving region of the cam surface of the second cam is located. Any of claims 2 to 4, wherein the second protruding portion is in a second state located in the moving region of the cam surface of the second cam when it is located in the moving region of the cam surface. The imaging apparatus according to paragraph 1. The imaging device according to any one of claims 2 to 5, further comprising an abutting member that regulates the movement of the holding member in the optical axis direction. The imaging device according to claim 6, wherein the abutting surface of the abutting member with the holding member has a spherical shape.

Images