Imaging device

Abstract

The present invention provides an imaging device that can be miniaturized and that can return the image sensor to the correct flange back position after tilting. [Solution] The imaging device 100 includes an imaging unit 120 having an image sensor 121 and a tilt drive unit 160 that performs tilt driving of the image sensor 121. The tilt drive unit 160 includes a base plate 210 that holds the imaging unit 120 and is fixed to the main body 201 of the imaging device 100, and three-axis adjustment screws 203a, 203b, and 203c that adjust the flange back of the image sensor 121 by adjusting the mounting position of the base plate 210 relative to the main body 201 in the optical axis direction of the imaging unit 120.

Description

Technical Field

[0005]

[0001] The present invention relates to an imaging device, and particularly to a configuration for performing panning shooting by tilting and driving an image pickup element.

Background Art

[0002] Techniques for performing panning shooting by tilting and driving (tilting) an image pickup element have been proposed. For example, Patent Document 1 discloses a configuration in which a uniaxial rotation axis is provided on an image pickup element holder, and the image pickup element is tilted and driven about the rotation axis. Further, Patent Document 2 discloses a configuration in which a tilt mechanism for tilting and driving an image pickup element about one axis by a linear actuator is rotationally driven by 90 degrees by a rotational actuator to enable tilt driving in two axes.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Specific configurations regarding the adjustment of the flange back of the image pickup element are not disclosed in the above Patent Documents 1 and 2. Therefore, for example, when tilting and driving is repeated, the flange back may deviate from the correct position, resulting in a problem that the image quality of the captured image deteriorates. Further, there is a problem that adding an adjustment mechanism for the flange back to the tilt mechanism increases the size of the imaging device.

[0005] An object of the present invention is to provide an imaging device capable of tilting and driving an image pickup element, which can be miniaturized and can return the image pickup element to a position where it has a correct flange back after tilting and driving. [Means for solving the problem]

[0006] The imaging apparatus according to the present invention comprises an imaging unit having an image sensor and a tilt driving means for tilting the image sensor, wherein the tilt driving means is characterized by comprising a fixing member that holds the imaging unit and is fixed to the main body of the imaging apparatus, and an adjustment means for adjusting the flange back of the image sensor by adjusting the mounting position of the fixing member with respect to the main body in the optical axis direction of the imaging unit. [Effects of the Invention]

[0007] According to the present invention, an imaging device capable of tilting the image sensor can be miniaturized, and the image sensor can be returned to the correct flange back position after tilting. [Brief explanation of the drawing]

[0008] [Figure 1] This is an external perspective view of the imaging device according to the embodiment. [Figure 2] This is a block diagram showing the schematic configuration of the imaging system according to the embodiment. [Figure 3] This is a perspective view showing the internal structure of the imaging device. [Figure 4] This is an exploded perspective view showing the internal structure of the imaging device. [Figure 5] This is a perspective view of the tilt drive unit of the imaging device. [Figure 6] This is a perspective view of the tilt drive unit and imaging unit as seen from the front. [Figure 7] This diagram illustrates the configuration of the horizontal left cam and the horizontal right cam. [Figure 8] This diagram illustrates the tilt drive of the image sensor using a horizontal left cam and a horizontal right cam. [Figure 9] This diagram illustrates the tilt drive of the image sensor using a vertical upper cam and a vertical lower cam. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Figure 1 is an external perspective view of the imaging device 100 according to an embodiment. As shown by the coordinate axes in the figures, the direction in which the imaging device 100 is represented differs between Figure 1(a) and Figure 1(b).

[0010] The imaging device 100 includes a grip section 101, a release button 102, a lens mount section 103, a mount contact 105, a lens lock release button 106, a power switch 107, a main electronic dial 108, a sub electronic dial 119, and a mode switching dial 109. The imaging device 100 also includes a SET button 110, a rear monitor 111, an electronic viewfinder 112, a multifunction button 113, a display panel 114, an accessory shoe 115, and a media slot cover 173.

[0011] Regarding the coordinate axes shown in Figure 1, when the image sensor 121 (see Figure 2) is in its base position (when the image sensor 121 is not tilted and the flange back is adjusted to the appropriate position), the Z-axis is perpendicular to the imaging plane of the image sensor 121 (see Figure 2). When the Z-axis is parallel to the horizontal direction, the X-axis is parallel to the horizontal direction and perpendicular to the Z-axis, and the Y-axis is perpendicular to both the Z-axis and the X-axis. The Z-axis direction is defined as the front-to-back direction of the imaging device 100, and the direction toward an unillustrated subject is defined as the positive direction (+Z direction). The +Z side of the imaging device 100 is referred to as the front, and the opposite side (-Z side) as the back. The X-axis direction is defined as the left-to-right direction (width direction) of the imaging device 100, and the direction from right to left when viewed from the -Z side is defined as the positive direction (+X direction). The Y-axis direction is defined as the up-and-down direction (height direction) of the imaging device 100, and the direction from the bottom surface to the top surface is defined as the positive direction (+Y direction).

[0012] The grip section 101 is a part that allows the photographer to stably hold the imaging device 100, and is located on the right side (-X side) of the imaging device 100. The release button 102 is a switch for starting imaging, and is located on the upper part of the grip section 101, so that the photographer can operate it while holding the grip section 101.

[0013] The lens mount section 103 is the part used for attaching and detaching the imaging lens unit 104 (see Figure 2), and is located on the front of the imaging device 100. The Z-axis coincides with the imaging optical axis (hereinafter simply referred to as the "optical axis") of the imaging lens unit 104. Inside the lens mount section 103, there is an opening 190 to allow light that has passed through the imaging lens unit 104 to reach the image sensor 121 (see Figure 2). The mount contact 105 is located in the opening 190 and electrically connects the imaging device 100 and the imaging lens unit 104, enabling signal communication related to lens control and lens data, as well as power supply from the imaging device 100 to the imaging lens unit 104. The lens lock release button 106 is a component operated when removing the imaging lens unit 104 from the imaging device 100. By pressing the lens lock release button, the lock is released and the lens can be removed.

[0014] The power switch 107 is an operating component that switches the power of the imaging device 100 on and off, and is located on the upper left side of the imaging device 100. The main electronic dial 108 and sub electronic dial 119 are operating components that can be rotated clockwise and counterclockwise, and the photographer can change various settings such as shutter speed by rotating them. The mode switching dial 109 is an operating component for switching shooting modes. Shooting modes include, for example, shutter speed priority mode, aperture priority mode, and video recording mode. The SET button 110 is a push-type operating component mainly used to confirm selection items. The rear monitor 111 displays a screen (menu screen) for making various settings of the imaging device 100, as well as captured images and live view images.

[0015] The electronic viewfinder 112 is a display means for the photographer to look through and check the display content, and it displays a menu screen, a captured image, a live view image, etc. The multi-function button 113 is a push-type operation member that allows the photographer to arbitrarily assign and use the switching of various shooting settings. The display panel 114 displays shooting parameters such as the shooting mode and ISO sensitivity. Note that the display panel 114 can display predetermined shooting parameters even when the imaging device 100 is powered off.

[0016] The accessory socket 115 has an accessory contact 116 and is a part that enables the attachment and detachment of various accessories (external devices) such as a strobe device and a microphone. The media slot cover 173 is a member that protects the media slot (not shown), and by opening it, an external storage medium 148 (see FIG. 2) such as an SD card can be inserted into and removed from the media slot.

[0017] FIG. 2 is a block diagram showing the schematic configuration of the imaging system. The imaging system is configured by mounting the photographing lens unit 104 on the imaging device 100.

[0018] The imaging device 100 includes a mount contact 105, an accessory contact 116, a main electronic dial 108, a mode switch dial 109, a power switch 107, a SET button 110, and a multi-function button 113. The imaging device 100 also includes a rear monitor 111, an electronic viewfinder 112, and a display panel 114. Note that these have been described with reference to FIG. 1, so the description here is omitted.

[0019] The photographing lens unit 104 includes a lens group 141, an AF drive unit 139, an electromagnetic drive aperture 142, an aperture drive unit 140, and a lens control unit 138.

[0020] The imaging device 100 includes a system control unit 130, a focal plane shutter 149, a shutter drive unit 132, a time measurement unit 131, a switch sense unit 133, a video signal processing unit 136, a display control unit 144, an imaging unit 120, and a piezoelectric element drive unit 145. The imaging device 100 also includes a tilt drive unit 160, a tilt drive control unit 137, a memory controller 146, an external storage medium 148, an accessory communication control unit 118, a power supply unit 134, a battery check unit 135, and a battery 143.

[0021] The lens group 141 consists of multiple lenses, including at least a focusing lens, which forms an image on the image sensor 121 by focusing the incident light. Note that in Figure 2, the lens group 141 is simplified and represented as a single lens. The AF drive unit 139 performs focusing on the subject by moving the focusing lens constituting the lens group 141 in the optical axis direction using an actuator such as a stepping motor. The electromagnetically driven aperture 142 consists of multiple aperture blades that form the aperture opening. The aperture drive unit 140 adjusts the amount of light reaching the image sensor 121 by driving the aperture blades of the electromagnetically driven aperture 142 with an actuator such as a stepping motor to adjust the aperture opening diameter. The lens control unit 138 controls the driving of the AF drive unit 139 and the aperture drive unit 140 according to commands from the system control unit 130.

[0022] The system control unit 130 is a microcomputer (MPU) composed of a CPU, ROM, RAM, etc., and is a control means that performs overall control of the imaging system by having the CPU load a predetermined program stored in ROM into RAM. For example, the system control unit 130 communicates with the lens control unit 138 via the mount contact 105 to control the operation of the AF drive unit 139 and the aperture drive unit to perform AF and AE.

[0023] The focal-plane shutter 149 is a mechanical shutter having a front curtain and a rear curtain. The shutter drive unit 132 moves the front and rear curtains of the focal-plane shutter 149 according to the drive signal from the system control unit 130. This controls the exposure time on the image sensor 121. The focal-plane shutter 149 is kept in a closed position with the front curtain when the power to the imaging device 100 is turned off. This prevents dust from entering the inside of the imaging device 100 through the opening 190.

[0024] The time measurement unit 131 measures the time when various processes are performed. The obtained time information is stored in a storage means such as an EEPROM provided by the system control unit 130. The switch sense unit 133 transmits input signals to the system control unit 130 according to the operating state of various buttons and switches. The release button 102 has a first switch (SW1) that turns on when half-pressed and a second switch that turns on when fully pressed. When the system control unit 130 receives the ON signal of SW1 via the switch sense unit 133, it prepares for shooting such as AE and AF, and when it receives the ON signal of SW2, it performs the actual shooting operation.

[0025] The video signal processing unit 136 performs various image processing, such as filtering and data compression, on the electrical signals obtained from the image sensor 121. For example, the image data for monitor display generated by the video signal processing unit 136 is displayed on the rear monitor 111 and the electronic viewfinder 112 via the display control unit 144. The video signal processing unit 136 also saves image data to the buffer memory 147 via the memory controller 146 according to commands from the system control unit 130. The video signal processing unit 136 can also perform image data compression processing such as JPEG. During continuous shooting, the image data can be stored in the buffer memory 147, and the unprocessed image data can be sequentially read out via the memory controller 146, allowing the video signal processing unit 136 to perform image processing and compression sequentially regardless of the image data input speed.

[0026] The buffer memory 147 temporarily stores various image data. The display control unit 144 uses the display image data acquired from the video signal processing unit 136 to control the display on the rear monitor 111, the electronic viewfinder 112, and the display panel 114. The memory controller 146 is a control means for storing image data in an external storage medium 148 and, conversely, reading image data stored in the external storage medium 148. The external storage medium 148 can be an SD card or CF card that is removable from the imaging device 100, but is not limited to these.

[0027] The imaging unit 120 includes an optical low-pass filter 122, an optical low-pass filter holding member 123, a piezoelectric element 124, and an image sensor 121. The image sensor 121 has a roughly rectangular, flat shape and is, for example, a CMOS sensor, but is not limited to this. The optical low-pass filter 122 is a single rectangular birefringent plate made of quartz and is positioned in front of the image sensor 121. The piezoelectric element 124 is attached to the optical low-pass filter 122 and vibrates in response to a drive signal. The piezoelectric element drive unit 145 vibrates the piezoelectric element 124 according to a command from the system control unit 130, thereby vibrating the optical low-pass filter 122 and shaking off dust adhering to the optical low-pass filter 122.

[0028] The tilt drive unit 160 has a horizontal drive motor 150 and a vertical drive motor 151 as rotational drive means (actuators) for tilting the imaging unit 120 around the horizontal axis (axis parallel to the X axis) and the vertical axis (axis parallel to the Y axis), respectively. For example, stepping motors are used for the horizontal drive motor 150 and the vertical drive motor 151. The detailed configuration of the tilt drive unit 160 will be described later. The tilt drive control unit 137 controls the driving of the horizontal drive motor 150 and the vertical drive motor according to commands from the system control unit 130.

[0029] The accessory communication control unit 118 controls the mutual communication between the control unit of an accessory (not shown) mounted on the accessory shoe 115 and the system control unit 130 via the accessory contact 116. The power supply unit 134 obtains, distributes, and supplies the necessary power to the various electrical and electronic components constituting the imaging device 100 from the battery 143. The battery check unit 135 notifies the system control unit 130 of the remaining battery level information of the battery 143. The battery 143 is a secondary battery such as a lithium-ion battery, but is not limited to this. The system control unit 130 and other electronic components such as ICs, the drive unit, and the slot for housing the external storage medium 148 are mounted on the main board 180.

[0030] Figure 3(a) is a perspective view showing the internal structure of the imaging device 100 with the outer cover removed. Figure 3(b) is a perspective view of the internal structure of the imaging device 100, with the main circuit board 180 shown in Figure 3(a) omitted.

[0031] In the imaging device 100, the main structure to which the exterior cover and lens mount section 103 are attached and which holds various components will be hereinafter referred to as the "main body 201". The tilt drive unit 160 is attached to the main body 201. At this time, the mounting position of the tilt drive unit 160 in the optical axis direction relative to the main body 201 can be adjusted using the three-axis adjustment screws 203a, 203b, and 203c. The main circuit board 180 is attached to the main body 201 at the rear (back side (-Z side)) of the tilt drive unit 160.

[0032] The horizontal drive motor 150 and vertical drive motor 151, which constitute the tilt drive unit 160, are electrically connected to the main board 180 by horizontal motor FPC 206 and vertical motor FPC 207, respectively. The imaging unit 120 has an imaging board 220 on which an image sensor 121 is mounted. Various electrical and electronic components for converting the analog signal output from the image sensor 121 into a digital signal are mounted on the imaging board 220.

[0033] The imaging board 220 and the main board 180 are electrically connected by image sensor FPCs 202a and 202b. In this configuration, image sensor FPCs 202a and 202b connect a connector mounted on the back of the imaging board 220 to a connector mounted on the front of the main board 180. Image sensor FPC 202a mainly transmits differential signals, while image sensor FPC 202b mainly transmits power.

[0034] The image sensor FPCs 202a and 202b are connected near the optical axis of the imaging substrate 220, which minimizes the amount of movement of the image sensor FPCs 202a and 202b when the imaging unit 120 is tilted. This reduces the repulsive force generated by the deformation of the image sensor FPCs 202a and 202b between the imaging substrate 220 and the main substrate 180, and as a result, it is possible to suppress the drive power of the horizontal drive motor 150 and the vertical drive motor 151. Furthermore, by using two image sensor FPCs 202a and 202b instead of one FPC, the image sensor FPCs 202a and 202b have small widths in the X and Y directions, respectively. Therefore, compared to using one FPC with a large width, it is possible to reduce and disperse the repulsive force caused by the deformation of the FPC when the imaging unit 120 is tilted.

[0035] The tilt drive of the imaging unit 120 will be described later with reference to Figure 5, etc., but here we will explain the flange back adjustment in the imaging device 100.

[0036] Figure 4 is an exploded perspective view showing the tilt drive unit 160 removed from the main body 201 of the imaging device 100. The tilt drive unit 160 has a base plate 210 as a fixing member for fixing the tilt drive unit 160 to the main body 201. The three-axis adjustment screws 203a, 203b, and 203c are inserted into screw holes 210a, 210b, and 210c provided in the base plate 210, respectively, and are screwed into screw holes provided in screw seats 201a, 201b, and 201c provided in the main body 201. At this time, the positioning hole 210d and the vibration damping hole 210e provided in the base plate 210 fit with the positioning boss 201d and the vibration damping boss 201e provided in the main body 201, respectively. This prevents the tilt drive unit 160 from shifting position relative to the main body 201 in the X and Y directions.

[0037] Furthermore, three-axis adjustment springs 211a, 211b, and 211c are positioned around the outer circumference of the screw seats 201a, 201b, and 201c, respectively. The three-axis adjustment springs 211a, 211b, and 211c are compression coil springs sandwiched in a compressed state between the main body 201 and the base plate 210, and are biasing members that bias the base plate 210 toward the rear side (-Z side). Therefore, by adjusting the length to which the three-axis adjustment screws 203a, 203b, and 203c are screwed into the screw holes, it is possible to adjust the distance between the main body 201 and the base plate 210 in the optical axis direction while maintaining the optical axis position of the base plate 210.

[0038] Here, the imaging unit 120 is attached to the front (+Z side) of the tilt drive unit 160. Therefore, by individually tightening or loosening the three-axis adjustment screws 203a, 203b, and 203c, the flange back of the imaging unit 120 and the tilt angle of the image sensor 121 with respect to the optical axis (so-called three-axis adjustment) can be adjusted simultaneously.

[0039] Next, the configuration of the tilt drive unit 160 will be described. Figure 5(a) is a perspective view of the tilt drive unit 160 as seen from the rear, and Figure 5(b) is a perspective view of the tilt drive unit 160 as seen from the front.

[0040] The horizontal drive motor 150 is fixed to the base plate 210 by a motor fixing member 301, and the vertical drive motor 151 is fixed to the base plate 210 by a motor fixing member 302. A horizontal worm gear 303 is fixed to the shaft of the horizontal drive motor 150, and a vertical worm gear 304 is fixed to the shaft of the vertical drive motor 151. The base plate 210 is provided with notches 210f and 210g, and one end of an upper biasing spring 315 and a lower biasing spring 316 are locked to the notches 210f and 210g, respectively. The upper biasing spring 315 and the lower biasing spring 316 are tension coil springs, and as will be described in detail later, the other ends of the upper biasing spring 315 and the lower biasing spring 316 are locked to the imaging substrate plate 402, biasing the imaging unit 120 relative to the base plate 210.

[0041] Horizontal bearings 305 and 306 are fixed to the base plate 210, and these horizontal bearings 305 and 306 rotatably hold the horizontal axis 309 (first rotation axis). In addition, vertical bearings 307 and 308 are fixed to the base plate 210, and these vertical bearings 307 and 308 rotatably hold the vertical axis 310 (second rotation axis). The horizontal axis 309 and the vertical axis 310 intersect with the extension of the optical axis. In other words, when viewed from the direction of the imaging optical axis (Z direction), the optical axis passes through the intersection region of the horizontal axis 309 and the vertical axis 310 (preferably the center of the intersection region).

[0042] A horizontal right cam 311 is fixed (for example, by press-fitting) to one end (-X direction end) of the horizontal shaft 309, and a horizontal left cam 312 is fixed to the other end (+X direction end) of the horizontal shaft 309. In addition, a vertical upper cam 313 is fixed to one end (+Y direction end) of the vertical shaft 310, and a vertical lower cam 314 is fixed to the other end (-Y direction end) of the vertical shaft 310.

[0043] The horizontal right cam 311, the horizontal left cam 312, the vertical upper cam 313, and the vertical lower cam 314 are formed of, for example, resin. As will be described in detail later, the horizontal right cam 311, the horizontal left cam 312, the vertical upper cam 313, and the vertical lower cam 314 have the same shape. Furthermore, the horizontal right cam 311 and the horizontal left cam 312, fixed to both ends of the horizontal shaft 309 respectively, operate synchronously as a pair of rotating plate cams, and similarly, the vertical upper cam 313 and the vertical lower cam 314, fixed to both ends of the vertical shaft 310 respectively, operate synchronously as a pair of rotating plate cams.

[0044] A worm wheel section 312a and a worm wheel section 314a are fixed to the horizontal left cam 312 and the vertical down cam 314, respectively. The horizontal left cam 312 and the worm wheel section 312a may be formed integrally, and the same applies to the vertical down cam 314 and the worm wheel section 314a.

[0045] The worm wheel portion 312a meshes with the horizontal worm gear 303. When the horizontal drive motor 150 is driven, the worm wheel portion 312a rotates in accordance with the rotation of the horizontal worm gear 303, causing the horizontal shaft 309 to rotate. As a result, the horizontal right cam 311 and the horizontal left cam 312 rotate in synchronization with the rotation of the horizontal shaft 309. In this way, the first rotating cam that drives the image sensor 121 to tilt in the left-right direction is configured. Details of the left-right tilt drive of the image sensor 121 will be described later.

[0046] The worm wheel portion 314a meshes with the vertical worm gear 304, and when the vertical drive motor 151 is driven, the worm wheel portion 314a rotates in accordance with the rotation of the vertical worm gear 304, causing the vertical axis 310 to rotate. As a result, the vertical upper cam 313 and the vertical lower cam 314 rotate in synchronization with the rotation of the vertical axis 310. In this way, a second rotating cam is configured to drive the image sensor 121 to tilt in the vertical direction. Details of the vertical tilt drive of the image sensor 121 will be described later.

[0047] Figure 6 is a perspective view of the tilt drive unit 160 and the imaging unit 120 as seen from the front. As described above, the imaging unit 120 includes an optical low-pass filter 122, an optical low-pass filter holding member 123, a piezoelectric element 124, an image sensor 121, an imaging substrate 220, and an imaging substrate plate 402.

[0048] The imaging substrate plate 402 is a holding member that holds the image sensor 121 via the imaging substrate 220 by holding the imaging substrate 220 by adhesive. A pair of short sides (left side and right side) of the outer circumference of the imaging substrate plate 402 have projections 402a and 402b that protrude outward, and a pair of long sides (top side and bottom side) have projections 402c and 402d that protrude outward. When viewed from the Z direction, projections 402a and 402b are located on a virtual line that passes through the center of the image sensor 121 and divides the image sensor 121 equally in the vertical direction (Y direction). Similarly, when viewed from the Z direction, projections 402c and 402d are located on a virtual line that passes through the center of the image sensor 121 and divides the image sensor 121 equally in the horizontal direction (X direction).

[0049] The protrusions 402a, 402b, 402c, and 402d are cam contact portions that contact the outer peripheral surfaces of the horizontal right cam 311, horizontal left cam 312, vertical upper cam 313, and vertical lower cam 314 of the tilt drive unit 160 on the back surface. The imaging substrate plate 402 also has notches 402e and 402f formed therein, and each of the notches 402e and 402f is provided with a protrusion. The upper biasing spring 315 and the lower biasing spring 316 are hooked onto the protrusions of the notches 402e and 402f, respectively, and bias the imaging unit 120 toward the rear of the optical axis. The biasing forces of the upper biasing spring 315 and the lower biasing spring 316 keep the horizontal right cam 311, horizontal left cam 312, vertical upper cam 313, and vertical lower cam 314 in constant contact with the projections 402a, 402b, 402c, and 402d. The projections 402a, 402b, 402c, and 402d then move in the optical axis direction, following the rotation of the horizontal left cam 312, vertical upper cam 313, and vertical lower cam 314.

[0050] Figure 7(a) is a right side view (plan view from the right side (-X side)) of the horizontal right cam 311, and Figure 7(b) is a right side view of the horizontal left cam 312. In Figure 7, rotation in the CCW direction (counterclockwise) is considered positive rotation, and the rotation angle is shown as a positive value. On the other hand, rotation in the CW direction (clockwise), which is the opposite direction of the CCW direction, is considered negative rotation, and the rotation angle is shown as a negative value. Note that the '+' sign is omitted when expressing a positive rotation angle.

[0051] Figure 7(a) shows the state where the point at which the distance from the rotation center (horizontal axis 309) of the horizontal right cam 311 to the cam surface (outer peripheral side surface) is 3.7 mm (R3.7 mm) is located furthest to the +Z side. At this time, the horizontal right cam 311 is assumed to be at the origin position. When the horizontal right cam 311 is at the origin position, its rotation angle is 0°. Hereafter, we will use the expression "the horizontal right cam 311 is at the origin position when its phase is 0°" as appropriate.

[0052] When the horizontal axis 309 is rotated in the CCW direction from the state shown in Figure 7(a), the horizontal right cam 311 transitions to a state where, at a rotation angle of 120°, the point where the distance from the rotation center to the cam surface is 2.4 mm is closest to the +Z side. In the following explanation, this state will be described as the horizontal right cam 311 being in its minimum position. At a rotation angle of 240°, the horizontal right cam 311 transitions to a state where the point where the distance from the rotation center to the cam surface is 5.0 mm is closest to the +Z side. In the following explanation, this state will be described as the horizontal right cam 311 being in its maximum position.

[0053] In other words, the horizontal right cam 311 is at the origin position when the phase is 0°, at the minimum position when the phase is 120°, and at the maximum position when the phase is 240°. The difference in distance from the rotation center of the horizontal right cam 311 to the cam surface located furthest to the +Z side is 1.3 mm in both the origin position and the minimum position, and between the origin position and the maximum position, and thus the same value.

[0054] Figure 7(b) shows the state where the point at which the distance from the rotation center to the cam surface of the horizontal left cam 312 is 3.7 mm is the point furthest to the +Z side, and at this time, the horizontal left cam 312 is assumed to be in the origin position. The rotation angle of the horizontal left cam 312 when it is in the origin position is set to 0°. When the horizontal axis 309 is rotated in the CCW direction from the state in Figure 7(b), the rotation angle is 120°, and the horizontal left cam 312 transitions to a state where the point at which the distance from the rotation center to the cam surface is 5.0 mm furthest to the +Z side. When the rotation angle is 240°, the horizontal left cam 312 transitions to a state where the point at which the distance from the rotation center to the cam surface is 2.4 mm furthest to the +Z side.

[0055] The same expression used for the position of the horizontal right cam 311 is applied to the horizontal left cam 312. That is, the horizontal left cam 312 is at the origin position when the phase is 0°, at the maximum position when the phase is 120°, and at the minimum position when the phase is 240°. The difference in distance from the rotation center of the horizontal left cam 312 to the cam surface located furthest to the +Z side between the origin position and the minimum position, and between the origin position and the maximum position, is 1.3 mm in both cases, and is the same value.

[0056] As shown in Figures 7(a) and 7(b), the horizontal right cam 311 has an asymmetrical shape when viewed from the axial direction of the horizontal axis 309, and the horizontal right cam 311 and the horizontal left cam 312 have substantially the same shape but are arranged in a symmetrical relationship with respect to the Z axis when viewed from the X direction. Therefore, the distance from the rotation center of the horizontal right cam 311 to the cam surface located furthest to the +Z side at a rotation angle λ° (0°≦λ≦360°) of the horizontal axis 309 and the distance from the rotation center of the horizontal left cam 312 to the cam surface located furthest to the +Z side at a rotation angle -λ° are the same value.

[0057] Figure 7(c) shows the relationship between the phase and position of the horizontal right cam 311 and the horizontal left cam 312. The relationship between the phase and position of the horizontal right cam 311 and the horizontal left cam 312 is as described above. Here, the state of the horizontal right cam 311 in Figure 7(a) is the same as the top view (plan view seen from the top (+Y side)) of the vertical upper cam 313, and the state of the horizontal left cam 312 in Figure 7(b) is the same as the top view of the vertical lower cam 314. Therefore, as shown in Figure 7(c), the relationship between the phase and position of the vertical upper cam 313 and the vertical lower cam 314 is the same as the relationship between the phase and position of the horizontal right cam 311 and the horizontal left cam 312.

[0058] Next, the tilt drive of the tilt drive unit 160 in the left-right direction will be described. "Left-right tilt drive" refers to a drive mode in which the imaging plane of the image sensor 121 is driven by the horizontal right cam 311 and the horizontal left cam 312, while maintaining a state parallel to the Y axis, and changing the angle with the X axis and Z axis by the same angle.

[0059] Figure 8 illustrates the tilt drive of the imaging unit 120 in the left-right direction. Specifically, Figures 8(a) to (c) show the state of the imaging unit 120 in a top view (plan view from the +Y side) when the horizontal axis 309 is rotated in the CCW direction in Figure 7 and the phases of the horizontal right cam 311 and the horizontal left cam 312 are set to 0°, 120°, and 240°. Note that the phases of the vertical upper cam 313 and the vertical lower cam 314 are fixed at 0°, and the horizontal drive motor 150 and the vertical drive motor 151 are not shown.

[0060] In Figure 8(a), the phase of the horizontal right cam 311 and the horizontal left cam 312 is 0°, and the horizontal right cam 311 and the horizontal left cam 312 are at the origin position. In this state, the flange back adjustment and triaxial adjustment, as explained with reference to Figure 4, have been successfully completed. Also, as mentioned above, the upper biasing spring 315 and the lower biasing spring 316 bias the imaging substrate plate 402 toward the rear side (-Z direction) relative to the base plate 210. Therefore, the protrusions 402a, 402b, 402c, and 402d of the imaging substrate plate 402 are biased toward the rear side relative to the horizontal right cam 311, the horizontal left cam 312, the vertical upper cam 313, and the vertical lower cam 314, respectively, and maintain constant contact.

[0061] By rotating the horizontal axis 309, the phase of the horizontal right cam 311 and the horizontal left cam 312 is changed from 0° to 120°, causing the horizontal right cam 311 to move to its minimum position and the horizontal left cam 312 to move to its maximum position. As a result, projection 402a moves (retracts) in the -Z direction while in contact with the cam surface of the horizontal right cam 311, and projection 402b moves (advances) in the +Z direction while in contact with the cam surface of the horizontal left cam 312. Thus, as shown in Figure 8(b), the imaging unit 120 rotates by |θ1|° around the Y axis. In other words, the tilt angle θ in the left-right direction between the line L perpendicular to the imaging plane of the image sensor 121 and the optical axis changes from 0° to |θ1|°. As shown in Figure 8(b), the tilt angle θ in the left-right direction is assumed to be negative when rotating in the CW direction around the Y axis as viewed from the +Y side, and positive when rotating in the CCW direction.

[0062] By rotating the horizontal axis 309, the phase of the horizontal right cam 311 and the horizontal left cam 312 is changed from 120° to 240°, causing the horizontal right cam 311 to move to its maximum position and the horizontal left cam 312 to move to its minimum position. As a result, projection 402a moves in the +Z direction while in contact with the cam surface of the horizontal right cam 311, and projection 402b moves in the -Z direction while in contact with the cam surface of the horizontal left cam 312. Thus, as shown in Figure 8(c), the imaging unit 120 rotates |2θ1|° in the CCW direction around the Y axis. Consequently, the tilt angle θ in the left-right direction changes from -θ1° to +θ1°.

[0063] Furthermore, by rotating the horizontal axis 309 to change the phase of the horizontal right cam 311 and the horizontal left cam 312 from 240° to 0°, the horizontal right cam 311 and the horizontal left cam 312 return to the origin position shown in Figure 8(a). In other words, the imaging unit 120 is in a state where flange back adjustment and triaxial adjustment have been completed normally. In this way, the imaging plane of the image sensor 121 can be tilted in the left and right directions by rotating the horizontal right cam 311 and the horizontal left cam 312.

[0064] Next, the vertical tilt drive of the tilt drive unit 160 will be described. "Vertical tilt drive" refers to a drive mode in which the vertical upper cam 313 and the vertical lower cam 314 drive the imaging plane of the image sensor 121, maintaining a state parallel to the X axis while changing the angle with the Y axis and Z axis by the same angle.

[0065] Figure 9 illustrates the vertical tilt drive of the image sensor 121. Specifically, Figures 9(a) to (c) show the state of the imaging unit 120 in a side view (plan view from the -X side) when the vertical axis 310 is rotated in the CCW direction in Figure 7, and the phases of the vertical upper cam 313 and vertical lower cam 314 are set to 0°, 120°, and 240°. Note that in Figure 9, the phases of the horizontal right cam 311 and horizontal left cam 312 are fixed at 0°, and the horizontal drive motor 150 and vertical drive motor 151 are not shown.

[0066] In Figure 9(a), the phase of the vertical upper cam 313 and the vertical lower cam 314 is 0°, and both the vertical upper cam 313 and the vertical lower cam 314 are at the origin position. In this state, the flange back adjustment and triaxial adjustment, as explained with reference to Figure 4, have been successfully completed. Also, as mentioned above, the upper biasing spring 315 and the lower biasing spring 316 bias the imaging substrate plate 402 toward the rear side (-Z direction) relative to the base plate 210. Therefore, the protrusions 402a, 402b, 402c, and 402d of the imaging substrate plate 402 are biased toward the rear side relative to the horizontal right cam 311, horizontal left cam 312, vertical upper cam 313, and vertical lower cam 314, respectively, and maintain constant contact. In other words, Figure 9(a) and Figure 8(a) are views of the same state from different directions.

[0067] When the vertical axis 310 is rotated to change the phase of the vertical upper cam 313 and the vertical lower cam 314 from 0° to 120°, the vertical upper cam 313 moves to its minimum position and the vertical lower cam 314 moves to its maximum position. As a result, projection 402c moves in the -Z direction while in contact with the cam surface of the vertical upper cam 313, and projection 402d moves in the +Z direction while in contact with the cam surface of the vertical lower cam 314. Thus, as shown in Figure 9(b), the imaging unit 120 rotates by |θ1|° around the X axis. In other words, the tilt angle θ in the vertical direction changes from 0° to |θ1|°. Note that, as shown in Figure 9(b), the value of the tilt angle θ in the vertical direction is assumed to be negative for rotation in the CCW direction around the X axis when viewed from the -X side, and positive for rotation in the CW direction.

[0068] When the vertical axis 310 is rotated to change the phase of the vertical upper cam 313 and the vertical lower cam 314 from 120° to 240°, the vertical upper cam 313 moves to its maximum position and the vertical lower cam 314 moves to its minimum position. As a result, projection 402c moves in the +Z direction while in contact with the cam surface of the vertical upper cam 313, and projection 402d moves in the -Z direction while in contact with the cam surface of the vertical lower cam 314. Thus, as shown in Figure 9(c), the imaging unit 120 rotates |2θ1|° in the CW direction around the Y axis. As a result, the vertical tilt angle θ changes from -θ1° to +θ1°. Note that when the phase of the vertical upper cam 313 and the vertical lower cam 314 is changed from 240° to 0°, the vertical upper cam 313 and the vertical lower cam 314 return to the origin position shown in Figure 9(a). In other words, the imaging unit 120 is in a state where the flange back adjustment and triaxial adjustment have been completed successfully. In this way, the rotation of the vertical upper cam 313 and the vertical lower cam 314 allows the imaging plane of the image sensor 121 to be tilted vertically.

[0069] While Figures 8 and 9 describe the case where the phases of the four cams constituting the tilt drive unit 160 are 0°, 120°, and 240°, the settable phases are not limited to these. In other words, depending on the phase of the cams, the imaging unit 120 can be gradually rotated around the Y-axis and X-axis between -θ1°, 0°, and +θ1°. To put it another way, depending on the phase of the cams, the imaging surface of the image sensor 121 can be tilted within the range of -θ1°, 0°, and +θ1° relative to a plane perpendicular to the optical axis, enabling tilt-shift imaging.

[0070] As described above, in the imaging device according to the present invention, the flange back can be correctly adjusted by a three-axis adjustment screw, and after tilting the imaging unit with the tilt drive unit, the image sensor can be returned to the position with the correct flange back. This makes it possible to obtain high-quality images without uneven blurring. Furthermore, in conventional configurations, the rotation of the image sensor around two mutually orthogonal axes is achieved by rotating the tilt mechanism, which rotates the image sensor around the first axis, around the second axis. In contrast, in the tilt drive unit of the imaging device according to the present invention, the rotation of the image sensor around the two axes is achieved by the rotation of the horizontal axis and the vertical axis, eliminating the need to rotate the tilt mechanism. Therefore, compared to conventional configurations, the imaging device according to the present invention can be made smaller and power consumption during tilt driving can be reduced.

[0071] Although the present invention has been described in detail above based on its preferred embodiments, the present invention is not limited to these specific embodiments, and various forms that do not depart from the spirit of the invention are also included in the present invention. Furthermore, each of the embodiments described above is merely one embodiment of the present invention, and it is possible to combine each embodiment as appropriate.

[0072] This embodiment includes the following configuration. (Configuration 1) An imaging device comprising an imaging unit having an image sensor and a tilt driving means for tilting the image sensor, wherein the tilt driving means comprises a fixing member that holds the imaging unit and is fixed to the main body of the imaging device, and an adjustment means for adjusting the flange back of the image sensor by adjusting the mounting position of the fixing member with respect to the main body in the optical axis direction of the imaging unit. (Configuration 2) The imaging apparatus according to Configuration 1, wherein the adjustment means comprises a screw inserted into a screw hole provided in the fixing member and screwed into a screw hole formed in a screw seat provided in the main body, and a first biasing member surrounding the outer circumference of the screw seat and positioned in a compressed state between the fixing member and the main body, wherein the flange back is adjusted by adjusting the distance between the main body and the fixing member in the optical axis direction by adjusting the length of screw screwing into the screw hole, and the position of the fixing member in the optical axis direction is maintained by the biasing force of the first biasing member. (Configuration 3) The imaging device according to Configuration 2, wherein the imaging unit has a holding member for holding the image sensor, and the tilt driving means comprises a first rotating cam having a pair of first rotating plate cams that abut against the holding member, a second rotating cam having a pair of second rotating plate cams that abut against the holding member, a first driving means for rotationally driving the first rotating cam, and a second driving means for rotationally driving the second rotating cam, wherein the imaging unit is tilted in a first direction as the contact portion of the holding member with the first rotating plate cam moves in the optical axis direction as the first rotating cam rotates, and the imaging unit is tilted in a second direction perpendicular to the first direction as the contact portion of the holding member with the second rotating plate cam moves in the optical axis direction as the second rotating cam rotates. (Configuration 4) The imaging apparatus according to Configuration 3, characterized in that the tilt driving means has a first rotating plate cam and a second biasing member that biases the holding member with respect to the second rotating plate cam. (Configuration 5) The imaging device according to Configuration 3 or 4, characterized in that when the rotation angles of the first rotating cam and the second rotating cam are both 0°, the tilt angle of the image sensor is 0°, and in the optical axis direction of the image sensor when the tilt angle is 0°, in accordance with the rotation of the first rotating cam, the contact portion between one of the pair of first rotating plate cams and the holding member advances in the optical axis direction, and the contact portion between the other of the pair of first rotating plate cams and the holding member retracts in the optical axis direction, thereby tilting the image sensor in the first direction. (Configuration 6) The first rotating cam has a first rotation shaft, one end of the first rotating plate cam is fixed to one end of the first rotation shaft, and the other end of the first rotating plate cam is fixed to the other end of the first rotation shaft. The imaging apparatus according to configuration 5, characterized in that, when viewed from the optical axis direction of the image sensor, the first rotating plate cam is in contact with the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and equally divides the imaging surface in the second direction. (Configuration 7) The imaging device according to Configuration 3 or 4, characterized in that when the rotation angles of the first rotating cam and the second rotating cam are both 0°, the tilt angle of the image sensor is 0°, and in the optical axis direction of the image sensor when the tilt angle is 0°, in accordance with the rotation of the second rotating cam, the contact portion between one of the pair of second rotating plate cams and the holding member advances in the optical axis direction, and the contact portion between the other of the pair of first rotating plate cams and the holding member retracts in the optical axis direction, thereby tilting the image sensor in the second direction. (Configuration 8) The imaging apparatus according to Configuration 7, characterized in that the second rotating cam has a second rotation axis, one end of the second rotating plate cam is fixed to one end of the second rotation axis, the other end of the second rotating plate cam is fixed to the other end of the second rotation axis, and when viewed from the optical axis direction of the image sensor, the second rotating plate cam is in contact with the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and divides the imaging surface equally in the first direction. (Configuration 9) The imaging apparatus according to any one of Configurations 5 to 8, characterized in that the adjustment of the flange back by the screw is performed when the tilt angle is 0°. (Configuration 10) An imaging apparatus according to any one of Configurations 3 to 9, characterized in that the first driving means and the second driving means are each stepping motors. (Configuration 11) An imaging device comprising an imaging unit having a holding member that holds an image sensor, and a tilt driving means for tilting the image sensor, wherein the tilt driving means has a first cam with first rotating plate cams attached to both ends of a first rotation axis, and a second cam with second rotating plate cams attached to both ends of a second rotation axis perpendicular to the first rotation axis, wherein, when viewed from the optical axis direction of the image sensor, the first rotating plate cam contacts the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and divides the imaging surface equally in the vertical direction, and the second rotating plate cam contacts the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and divides the imaging surface equally in the left-right direction, and the image sensor tilts in the left-right direction in accordance with the rotation of the first rotation axis, and the image sensor tilts in the up-down direction in accordance with the rotation of the second rotation axis. (Configuration 12) The imaging device according to Configuration 11, characterized in that when the rotation angles of the first rotation axis and the second rotation axis are both 0°, the tilt angle of the image sensor is 0°, and in the optical axis direction of the image sensor when the tilt angle is 0°, in accordance with the rotation of the first rotation axis, the contact portion between the rotating plate cam attached to one end of the first rotation axis and the holding member of the first rotating plate cam advances in the optical axis direction, and the contact portion between the rotating plate cam attached to the other end of the first rotation axis and the holding member retracts in the optical axis direction, thereby causing the image sensor to tilt in the left-right direction. (Configuration 13) The imaging device according to Configuration 11 or 12, characterized in that when the rotation angles of the first rotation axis and the second rotation axis are both 0°, the tilt angle of the image sensor is 0°, and in the optical axis direction of the image sensor when the tilt angle is 0°, in accordance with the rotation of the second rotation axis, the contact portion between the rotating plate cam attached to one end of the second rotation axis and the holding member of the second rotating plate cam advances in the optical axis direction, and the contact portion between the rotating plate cam attached to the other end of the second rotation axis and the holding member retracts in the optical axis direction, thereby causing the image sensor to tilt in the vertical direction. (Configuration 14) The imaging device according to Configuration 12 or 13, characterized in that the tilt driving means comprises a fixing member fixed to the main body of the imaging device, and an adjustment means for adjusting the flange back by adjusting the position in which the fixing member is attached to the main body when the tilt angle is 0°. (Configuration 15) The imaging apparatus according to Configuration 14, further comprising a biasing means for biasing the holding member with respect to the fixing member, wherein the biasing force provided by the biasing means ensures that contact between the first rotating plate cam and the second rotating plate cam and the holding member is always maintained. [Explanation of Symbols]

[0073] 100 Imaging device 120 Imaging Units 121 Image sensor 130 System Control Unit 150 Horizontal drive motor 151 Vertical drive motor 160 Tilt Drive Unit 203a, 203b, 203c Three-axis adjustment screw 211a, 211b, 211c Three-axis adjustable spring 309 horizontal axis 310 vertical axis 311 Horizontal right cam 312 horizontal left cam 313 Vertical Up Cam 314 Vertical downward cam 402 Imaging substrate plate

Claims

1. An imaging unit having an image sensor, An imaging device comprising a tilt driving means for tilting the image sensor, The tilt drive means is A fixing member that holds the imaging unit and is fixed to the main body of the imaging device, An imaging device characterized by comprising an adjustment means for adjusting the flange back of the image sensor by adjusting the mounting position of the fixing member with respect to the main body in the optical axis direction of the imaging unit.

2. The aforementioned adjustment means is A screw that is inserted into a screw hole provided in the fixing member and screwed into a screw hole formed in a screw seat provided in the main body, It comprises a first biasing member that surrounds the outer circumference of the screw seat and is positioned in a compressed state between the fixing member and the main body, The imaging apparatus according to claim 1, characterized in that the flange back is adjusted by adjusting the distance between the main body and the fixing member in the optical axis direction by adjusting the length of the screw that screws into the screw hole, and the position of the fixing member in the optical axis direction is maintained by the biasing force of the first biasing member.

3. The imaging unit has a holding member for holding the image sensor, The tilt drive means is A first rotating cam having a set of first rotating plate cams that contact the holding member, A second rotating cam having a set of second rotating plate cams that contact the holding member, A first driving means for rotationally driving the first rotating cam, The system comprises a second driving means for rotationally driving the second rotating cam, The imaging apparatus according to claim 2, characterized in that, as the first rotating cam rotates, the contact portion of the holding member with the first rotating plate cam moves in the optical axis direction, thereby driving the imaging unit to tilt in a first direction, and as the second rotating cam rotates, the contact portion of the holding member with the second rotating plate cam moves in the optical axis direction, thereby driving the imaging unit to tilt in a second direction perpendicular to the first direction.

4. The imaging apparatus according to claim 3, characterized in that the tilt driving means has a first rotating plate cam and a second biasing member that biases the holding member with respect to the second rotating plate cam.

5. When the rotation angles of the first rotating cam and the second rotating cam are both 0°, the tilt angle of the image sensor is 0°. The imaging apparatus according to claim 3 or 4, characterized in that, in the optical axis direction of the image sensor when the tilt angle is 0°, the contact portion between one of the pair of first rotating plate cams and the holding member advances in the optical axis direction and the contact portion between the other of the pair of first rotating plate cams and the holding member retracts in the optical axis direction in accordance with the rotation of the first rotating cam, thereby tilting the image sensor in the first direction.

6. The first rotating cam has a first rotation axis, One end of the first rotating plate cam is fixed to one end of the first rotating shaft, and the other end of the first rotating plate cam is fixed to the other end of the first rotating shaft. The imaging apparatus according to claim 5, characterized in that, when viewed from the optical axis direction of the image sensor, the first rotating plate cam is in contact with the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and equally divides the imaging surface in the second direction.

7. When the rotation angles of the first rotating cam and the second rotating cam are both 0°, the tilt angle of the image sensor is 0°. The imaging apparatus according to claim 3 or 4, characterized in that, in the optical axis direction of the image sensor when the tilt angle is 0°, the contact portion between one of the pair of second rotating plate cams and the holding member advances in the optical axis direction and the contact portion between the other of the pair of first rotating plate cams and the holding member retracts in the optical axis direction in accordance with the rotation of the second rotating cam.

8. The second rotating cam has a second rotation axis, One end of the second rotating plate cam is fixed to one end of the second rotating shaft, and the other end of the second rotating plate cam is fixed to the other end of the second rotating shaft. The imaging apparatus according to claim 7, characterized in that, when viewed from the optical axis direction of the image sensor, the second rotating plate cam is in contact with the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and equally divides the imaging surface in the first direction.

9. The imaging apparatus according to claim 5, characterized in that the adjustment of the flange back by the screw is performed when the tilt angle is 0°.

10. The imaging apparatus according to claim 3 or 4, characterized in that the first driving means and the second driving means are each stepping motors.

11. An imaging unit having a holding member that holds an image sensor, An imaging device comprising a tilt driving means for tilting the image sensor, The tilt drive means is A first cam with first rotating plate cams attached to both ends of the first rotating shaft, The device has a second cam, which has a second rotating shaft perpendicular to the first rotating shaft, with second rotating plate cams attached to both ends of the second rotating shaft, When viewed from the optical axis direction of the image sensor, the first rotating plate cam contacts the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and divides the imaging surface equally in the vertical direction, and the second rotating plate cam contacts the holding member on a virtual line that passes through the center of the imaging surface of the image sensor and divides the imaging surface equally in the horizontal direction. An imaging device characterized in that the image sensor tilts in the left-right direction in accordance with the rotation of the first rotation axis, and the image sensor tilts in the up-down direction in accordance with the rotation of the second rotation axis.

12. When the rotation angles of the first rotation axis and the second rotation axis are both 0°, the tilt angle of the image sensor is 0°. The imaging apparatus according to claim 11, characterized in that, in the optical axis direction of the image sensor when the tilt angle is 0°, in accordance with the rotation of the first rotation axis, the contact portion between the rotating plate cam attached to one end of the first rotation axis and the holding member advances in the optical axis direction, and the contact portion between the rotating plate cam attached to the other end of the first rotation axis and the holding member retracts in the optical axis direction, thereby causing the image sensor to tilt in the left-right direction.

13. When the rotation angles of the first rotation axis and the second rotation axis are both 0°, the tilt angle of the image sensor is 0°. The imaging apparatus according to claim 11, characterized in that, in the optical axis direction of the image sensor when the tilt angle is 0°, in accordance with the rotation of the second rotation axis, the contact portion between the rotating plate cam attached to one end of the second rotation axis and the holding member of the second rotating plate cam advances in the optical axis direction, and the contact portion between the rotating plate cam attached to the other end of the second rotation axis and the holding member retracts in the optical axis direction, thereby causing the image sensor to tilt in the vertical direction.

14. The tilt drive means is A fixing member fixed to the main body of the imaging device, The imaging apparatus according to claim 12 or 13, further comprising an adjustment means for adjusting the flange back by adjusting the position in which the fixing member is attached to the main body when the tilt angle is 0°.

15. The holding member is provided with a biasing means for biasing the fixing member, The imaging apparatus according to claim 14, characterized in that the contact between the first rotating plate cam and the second rotating plate cam and the holding member is always maintained by the biasing force provided by the biasing means.

Images