JP2011040862A - Device for adjusting rotation of imaging element of digital camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for adjusting the rotation of the imaging element of a digital camera adjusting lateral inclination of the imaging element of the digital camera, and changing over the vertical position/horizontal position of the imaging element. <P>SOLUTION: This device includes: an imaging element support mechanism for holding an imaging element rotatably by a rotary shaft concentric with the optical axis of an imaging optical system or parallel to the optical axis, and holding the imaging element at an optional rotating position in a predetermined rotation range including a horizontal position and a vertical position with respect to a camera body; a drive means to rotate the imaging element around the rotary shaft; and a control means to rotate the imaging element at a desired rotating position through the drive means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image sensor rotation adjustment device for a digital camera, and more specifically to an image sensor rotation adjustment device that can rotate and adjust the horizontal tilt, horizontal position, and vertical position of an image sensor without moving a camera body. .

  Conventionally, in camera shooting, a level has been used when it is desired to shoot with the horizontal or vertical direction parallel to the horizontal or vertical direction of the shooting screen, such as in a building. In addition, there is known a digital camera equipped with an electronic level to display horizontal and horizontal inclinations on a monitor screen.

JP 2006-165941 A

  However, the conventional technique is inconvenient because the user needs to adjust the camera horizontally while viewing the display on the electronic level. Also, with conventional cameras, when shooting in the vertical position, the camera must be held in the vertical position, shooting in the vertical position while holding it in the normal position (horizontal position), or taking the horizontal position while holding it in the vertical position. It was desired to be able to.

The present invention has been made in view of the problems of the prior art, and an object of the present invention is to obtain an image sensor rotation adjustment device for a digital camera that can adjust the tilt of the image sensor of the digital camera in the left-right direction.
A further object of the present invention is to provide an image sensor rotation adjustment device for a digital camera that can be switched from a horizontal tilt adjustment of the image sensor to a vertical position and a horizontal position.

  The present invention that solves the above-mentioned problems allows an imaging device to be freely rotated by a rotation axis that is concentric with or parallel to the optical axis of a photographic optical system, and the imaging device is in an arbitrary rotation range with respect to the camera body. An image sensor support mechanism for holding the image sensor at a rotational position; drive means for rotating the image sensor around the rotation axis; and control means for rotating the image sensor to a desired rotational position via the drive means. It has a special feature.

The image sensor rotation adjusting device for a digital camera according to the present invention includes an inclination detection unit that detects an inclination of the camera body from a horizontal direction or a vertical direction, and the control unit is based on a detection result of the inclination detection unit. Preferably, the image sensor is rotated via the drive means so that the long side of the light receiving surface of the image sensor is parallel to the horizontal direction or the vertical direction. And it is practical that the control means rotates the image sensor via the drive means so that one side of the light receiving surface of the image sensor is horizontal based on the detection result of the tilt detection means. is there.
According to this configuration, it is possible to make adjustment so that one side of the light receiving surface of the image sensor is horizontal without the user being particularly conscious.

  More practically, the imaging element support mechanism includes a fixed frame fixed to a camera body and a movable frame on which the imaging element is mounted, and the movable frame is a photographing optical system with respect to the fixed frame. The rotating shaft is pivotally supported by a rotating shaft parallel to the optical axis, and the rotating shaft is formed such that the center of the rotating shaft coincides with the optical axis when mounted on the camera body. The drive means is preferably formed by a permanent magnet mounted on one of the opposing surfaces of the fixed frame and the movable frame and a planar coil mounted on the other.

  Furthermore, the image sensor rotation adjusting device for a digital camera of the present invention further comprises a vertical / horizontal changeover switch means, and the image sensor support mechanism holds the image sensor at either a vertical position or a horizontal position. The control unit is rotatably supported in a vertical position or a horizontal position, and when the control unit receives an operation of the vertical / horizontal switch unit, the control unit rotates the image pickup device by 90 ° through the driving unit. It is configured to be rotated and held at any position. According to this configuration, since it is possible to shoot in the horizontal position even when the camera is held in the horizontal position, it is possible to shoot in the vertical position, particularly with the camera fixed on the tripod in the horizontal position.

  Also in such an embodiment, when the image pickup device is held in a horizontal position, the control unit is configured so that the long side of the light receiving surface of the image pickup device is horizontal based on the detection result by the tilt detection unit. When the drive unit is driven and controlled, and the image sensor is held in a vertical position, the drive unit is configured such that the long side of the light receiving surface of the image sensor is vertical based on the detection result of the tilt detection unit. Is preferably controlled.

  According to the present invention, since the tilt of the image sensor in the horizontal direction or the vertical direction can be adjusted, the tilt of the captured image in the horizontal direction can be adjusted without moving the camera.

1 is a cross-sectional view illustrating a main part of a camera body vertically cut in an embodiment in which the present invention is applied to an interchangeable lens digital single-lens reflex camera. It is a block diagram which shows the main circuit structures of the digital single-lens reflex camera. In the embodiment of the image sensor rotation adjusting device of the present invention, it is a perspective view seen from the front in a state where the image sensor is mounted on the movable frame of the stage device. It is the perspective view seen from the state where the image sensor was attached to the movable frame of the stage device. It is the perspective view seen from the front in the state which mounted | wore the fixed frame with the movable frame. It is the perspective view seen from the front in the state which mounted | wore the fixed frame with the movable frame. It is a front view of the state which mounted | wore the fixed frame with the movable frame. It is the rear view which removed the same fixed frame. It is a figure which shows schematic structure of the Example of the drive means which consists of the planar coil and permanent magnet which rotationally drive the movable frame, (A) is a top view, (B) is a front view. It is a figure explaining the principle of operation of the drive means. (A) is the perspective view which looked at the movable frame with which the image sensor was mounted | worn from the front side, (B) is the back view of 2nd Embodiment of this invention. It is the perspective view which showed the said 2nd Embodiment from the front side in the state which mounted | wore the fixed frame with the movable frame with which the image sensor was mounted | worn. (A) is the perspective view seen from the back side, (B) is the perspective view which saw through the fixed frame seeing from the back side. In the second embodiment, the image sensor is rotationally adjusted from the lateral position, (A) is a front view, and (B) is a rear view seen through a fixed frame. It is the perspective view shown from the front side in the state which rotated the image sensor of the said 2nd Embodiment to the vertical position. In the second embodiment, the image sensor is rotated to a vertical position, (A) is a perspective view seen from the back side, and (B) is a perspective view seen through the fixed frame as seen from the back side. In the second embodiment, the image sensor rotated to the vertical position is rotationally adjusted, (A) is a front view, and (B) is a rear view seen through the fixed frame. In 2nd Embodiment, it is the figure which showed the operation | movement which rotates a movable frame (image sensor) with the flowchart.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an embodiment in which the present invention is applied to an image pickup unit of a digital single-lens reflex camera, and is a cross-sectional view illustrating a main part of the camera body 10 cut vertically. FIG. FIG.

  The camera body 10 has a main mirror 13 and a shutter unit 15 as main optical elements from the side of the mount unit 12 where the photographic lens is detachably mounted, and an imaging system in a back space opened and closed by the shutter unit 15. An imaging unit 50 having an image sensor 51 is disposed. A finder optical system including a focusing screen 17, a pentaprism 18, and an eyepiece lens 19 is disposed above the main mirror 13. Above the eyepiece lens 19, a photometric sensor 20 that receives a part of the subject light beam emitted from the pentaprism 18 is disposed. On the back surface of the main mirror 13, a sub mirror 14 is disposed that guides the subject light flux that has passed through the half mirror region of the main mirror 13 to the AF sensor unit 21 disposed below.

  On the back surface of the camera body 10, a display 45 that displays information related to the shooting function such as a shooting mode and a shot image is provided.

  Further, as shown in FIG. 2, a main CPU (control means) 31 that controls the camera body 10 and the photographing lens 100 in an integrated manner is mounted in the camera body 10, and the main CPU 31 includes AF control, Shooting control such as AE control, shutter unit 15 control, and image sensor 51 operation control, and various operation controls based on the operation of various operation switches are performed.

  The main CPU 31 is connected to the lens CPU 101 in the photographic lens 100 via a contact terminal provided on the mount unit 12, and various information communication such as lens-specific data, the state of the photographic lens 100, or the state on the camera body 10 side. I do.

  The main CPU 31 is connected to a photometric sensor 20, an AF sensor unit 21, and a tilt sensor 23 as sensors, a DSP (Digital Signal Processor) 33 as a control and image signal processing system, a photometric switch 35 and a release switch 36 as switches. And a mode switch 37 is connected. Further, a motor driver 39, a shutter drive circuit 40, a motor driver 43, a horizontal compensation driver 24, and the like are connected to the main CPU 31 as drive systems. The AF motor 38 is driven and controlled by the main CPU 31 via the motor driver 39, the mirror motor 41 and the charge motor 42 via the motor driver 43, and the shutter unit 15 via the shutter drive circuit 40, respectively. The driver 24 drives a coil 25 that horizontally adjusts and rotates the image sensor 51.

  The image sensor 51 is driven and controlled by the DSP 33 under the control of the main CPU 31. The pixel signal photographed and output by the image sensor 51 is processed by the DSP 33. The DSP 33 generates image data from drive control of the image sensor 51 and pixel signals photographed and output by the image sensor 51, displays the image on the display 45, converts the image data into a predetermined format, and converts the image data into a memory card (recording medium). ) A processor that performs overall control of image signal processing, display processing, and image recording processing, such as processing for recording in 200.

  The shutter unit 15 is a so-called focal plane shutter, and is installed so that the shutter front curtain and the rear curtain face the low-pass filter surface 54 a of the image sensor 51. The shutter unit 15 is driven by the shutter drive circuit 40 under the control of the CPU 31, and at the time of exposure, the photographing optical path is opened and closed by the time difference at the start of traveling between the front curtain and the rear curtain, and from the photographing lens 100 while it is open. A subject image is formed on the light receiving surface 51 a of the image sensor 51 by passing the subject luminous flux. Further, when the above-described exposure operation is performed, the shutter unit 15 is driven to a charged state in preparation for photographing by a charge motor 42 driven via a motor driver 43.

  The main mirror 13 is pivotally supported by a rotating shaft 13 a provided near the upper end thereof, and is provided with a down (observation) position shown in FIG. 1 and an up (observation) position facing the focusing screen 17. Rotate between. The main mirror 13 is moved up and down by the driving force and spring force (not shown) of the mirror motor 41 driven via the motor driver 43. In the observation state shown in FIG. 1, most of the light beam (subject light) that has passed through the photographing lens 100 and entered the camera body 10 is reflected by the main mirror 13 and enters the focusing screen 17. Part of the subject light that has passed through the focusing screen 17 and exited from the pentaprism 18 enters the photometric sensor 20. The photometric sensor 20 outputs a photometric signal corresponding to the amount of received light to the main CPU 31. The main CPU 31 based on the input photometric signal, the shutter speed that is the charge accumulation time (exposure time) of the image sensor 51, and the aperture (aperture value) of an aperture (not shown) provided on the photographing lens 100 side. And driving control is performed with the calculated value at the time of photographing.

  The central region of the main mirror 13 is a half mirror, and a part of the light beam incident from the photographing lens 100 is transmitted through the main mirror 13 and reflected downward by the sub mirror 14 provided on the back side of the main mirror 13. And enters the AF sensor unit 21.

  The AF sensor unit 21 is a so-called pupil division phase difference type distance measuring sensor having a CCD sensor at a position optically equivalent to the light receiving surface 51a of the image sensor 51, and detecting a predetermined focus in a photographing screen (not shown). A pair of subject image signals that are in focus in the area are output to the main CPU 31 as AF video signals. The main CPU 31 calculates a defocus amount based on the AF video signal, and a lens driving direction for moving the focusing lens FL to the in-focus position based on the defocus amount and lens data unique to the photographing lens 100. Then, the driving amount is calculated, and the AF motor 38 is driven and controlled (AF driving control). The driving force of the AF motor 38 is transmitted to the gear unit 103 via a joint provided in the mount portion 12 of the camera body 10 and a joint provided in the mount portion on the photographing lens 100 side, and the focusing lens FL is moved to the optical axis. Driven in the direction.

  The image sensor 51 includes an infrared cut filter (infrared absorption filter) 53 and a low-pass filter 54 installed so as to cover the opening of the casing 52. The image sensor 51 is attached to the stage device 61 (see FIG. 5). The stage device 61 supports the image sensor 51 so that the light receiving surface 51a of the image sensor 51 rotates in a plane orthogonal to the optical axis O with the optical axis O as an axis. The imaging unit 50 is configured by the image sensor 51, the casing 52, and the like, and the stage device 61.

  The camera body 10 is equipped with an inclination sensor 23 that detects the inclination of the camera body 10 in the horizontal direction or the vertical direction from the normal position. The tilt sensor 23 may be any sensor that can detect that the left and right sides of the camera body 10 are tilted from the horizontal direction or the vertical direction, the tilt angle, and the like. The detection output of the tilt sensor 23 is input to the main CPU 31, and the main CPU 31 calculates the tilt angle in the left-right direction.

  The camera body 10 is provided with a release button (not shown) linked to the photometry switch 35 and the release switch 36, a mode button (not shown) linked to the mode switch 37, and a vertical / horizontal switching button linked to the vertical / horizontal changeover switch 38. It has been. When the release button is half-pressed, the photometry switch 35 is turned on, and when the release button is fully pressed, the photometry switch 35 is kept on and the release switch 36 is turned on. The mode switch 37 is turned on / off according to the pressing operation of the operation mode setting button, and switches to either the horizontal compensation mode or the normal mode each time it is turned on. The vertical / horizontal switch 38 is a switching operation switch for rotating the image sensor 51 between the horizontal position and the vertical position, and switches to the horizontal position and the vertical position each time it is turned on. In the horizontal compensation mode, the horizontal angle of the camera body 10 is detected by the tilt sensor 23 and the horizontal / horizontal switch 38 by the vertical / horizontal changeover switch 38, and the long side of the image sensor 51 (light receiving surface 51a) is detected. The stage device 61 is arranged so as to be parallel to the horizontal direction with respect to the camera body 10 or so that the long side of the image sensor 51 is parallel to the vertical direction with respect to the camera body 10 when being switched to the vertical position. In this mode, the image sensor 51 is rotated.

  Next, the configuration of the stage device 61 that enables the horizontal adjustment of the image sensor 51, which is a feature of the present embodiment, will be further described with reference to FIGS. 3 is a perspective view seen from the front with the image sensor 51 mounted on the movable frame 63 of the stage device 61, and FIG. 4 is a perspective view seen from the rear. 5 shows a perspective view seen from the front with the movable frame 63 attached to the fixed frame 62, FIG. 6 shows a perspective view seen from the rear, FIG. 7 shows the front view, and FIG. The rear view which removed the fixed frame 62 was shown.

  The stage device 61 includes a movable frame 63 pivotally supported on a ladder-like fixed frame 62, and the image sensor 51 is mounted on the surface of the movable frame 63. The image sensor 51 is fixed to the movable frame 63 by a pressing member 55 having a claw portion that engages with an edge portion of the low-pass filter 54.

  A substrate 56 of the image sensor 51 is attached to the back surface of the movable frame 63. A signal connector 56a of the image sensor 51 is mounted on the board 56, and a hall sensor 26 is mounted as a position sensor for detecting the rotational position of the coil 25 and the movable frame 63 for rotating the movable frame 63 (FIG. 6). The signal connector 56 a is fitted with a connector (not shown) of the flexible substrate 65, and the connectors 65 a at both ends of the flexible substrate 65 are connected to the connector of the camera body 10.

  A rotating shaft 63a that extends rearward perpendicularly to the back surface is integrally formed at the center of the back surface of the movable frame 63, and extends through the substrate 56. On the other hand, a bearing (shaft hole) 62 a is integrally formed at the center of the front surface of the base plate 62. The rotary shaft 63a is inserted into the bearing 62a from the tip, and the movable frame 63 is pivotally supported with respect to the base plate 62 by the rotary shaft 63a and the bearing 62a.

  The coil 25 is thin and flat in an oval shape extending in the radial direction from the optical axis O (the axis of the rotating shaft 63a). On the other hand, a pair of permanent magnets 66a and 66b are fixed to the front surface of the base plate 62, that is, the surface facing the movable plate 63, at a position facing the coil 25 at a predetermined interval. FIG. 9 shows the relationship between the coil 25 and the permanent magnets 66a and 66b. The coil 25 is arranged such that a straight line passing through the optical axis (rotation center) O passes through the long axis. The permanent magnets 66a and 66b are magnetized in the thickness direction and are arranged so that their opposite poles face the same plane. At an initial position, the permanent magnets 66a and 66b have a radial line passing through the optical axis (rotation center) O of the movable plate 63. The coil 25 is disposed so as to oppose one long side of the coil 25 (FIG. 9B). Therefore, the magnetic force of the permanent magnets 66a and 66b acts on the coil 25 to rotate the movable plate 63 counterclockwise or clockwise with respect to the optical axis (rotation center) O according to the current direction. Rotate. For example, when a current I is passed through the coil 25 in the direction shown in FIG. 10, a force in the direction of arrow F is generated in the coil 25, and the movable plate 63 tries to rotate counterclockwise about the optical axis O. When the current I is applied in the reverse direction, a force for rotating the movable plate 63 to the right acts.

  The hall sensor 26 can detect a relative position with respect to the permanent magnets 66a and 66b. In this embodiment, the rotation angle around the optical axis (rotation center) O of the movable plate 63 is detected as the left-right rotation angle (tilt angle) of the image sensor 51 based on the output of the hall sensor 26.

  The stage device 61 is fixed to the camera body 10 by mounting screws 64 that pass through mounting holes drilled at four corners of the base plate 62. At the time of fixing, the rotating shaft 63a is positioned and fixed with respect to the camera body 10 so that the axis of the rotating shaft 63a coincides with the optical axis O and the light receiving surface 51a of the image sensor 51 is orthogonal.

  The camera body 10 on which the above stage device 61 is mounted adjusts the horizontal tilt of the image sensor 51 in the horizontal compensation mode as follows. First, the main CPU 31 detects the tilt of the camera body 10 in the left-right direction using the tilt sensor 23. Then, the camera body 10 energizes the coil 25 in accordance with the detected right / left tilt angle, rotates the image sensor 51 around the optical axis O, and horizontally sets the upper and lower sides of the light receiving surface 51a of the image sensor 51. Hold on. That is, the left-right direction of the shooting screen matches the horizontal direction on the earth.

  As described above, according to the embodiment of the present invention, the image sensor 51 can be rotated about the optical axis O. Therefore, only when the composition of the camera body 10 tilted from the lateral position (normal position) can be obtained. Even if it exists, it becomes possible to rotate the image sensor 51 and to shoot with the long side of the shooting screen horizontal.

  In this embodiment, the coil 25 and the hall sensor 26 are attached to the movable plate 63 that is the movable side, and the permanent magnets 66a and 66b are attached to the base plate 62 that is the stationary side. Permanent magnets 66 a and 66 b may be mounted on the movable plate 63 on the base plate 62. Two or more sets of the coil 25 and the permanent magnets 66a and 66b may be provided. By providing a plurality of permanent magnets 66a and 66b along the movement trajectory of the movable plate 63 in the rotation direction, the rotation range can be expanded.

  In the first embodiment, if the movable frame 63 is configured to be rotated and rotated by 90 ° or more around the rotation axis, the movable frame 63 can be operated even when the camera body 10 is fixed in the normal position (lateral position). 63 can be rotated 90 ° to enable vertical position shooting with the image sensor 51 in the vertical position, and horizontal position shooting is possible with the camera body 10 held in the vertical position. A second embodiment in which the image sensor 51 can be rotated in the vertical position and the horizontal position as described above will be described with reference to FIGS. 11 to 18. The same members and members having the same functions as those of the first embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and description thereof is omitted.

  The image sensor 51 of the second embodiment has the same structure as that of the first embodiment, and the image sensor 51 is fixed to the front surface of the movable frame 163 by a pressing member 55 (FIG. 11A). The back surface of the substrate 156 of the image sensor 51 is exposed on the back surface of the movable frame 163, and a rotating shaft 163 a provided on the movable frame 163 protrudes from a hole formed in the center of the back surface of the substrate 156. The center of the rotating shaft 163a coincides with the center of the light receiving surface 51a of the image sensor 51 and extends in a direction perpendicular to the light receiving surface 51a.

  On the back surface of the substrate 156, an elliptical flat coil 125 extending in the radial direction (diagonal direction) from the rotating shaft 163a is mounted. Further, a hall sensor 126 is mounted in the center of the oval of the coil 125 winding. Further, a connector 156a is provided on the back surface of the substrate 156 in the vertical direction along the short side opposite to the coil 125 with the rotating shaft 163a interposed therebetween. The connector 156a is connected to the electrodes of the image sensor 51, and these electrodes are connected to electrodes of a control circuit and the like mounted on the camera body 10 through a flexible printed board connected to the connector 156a. The The flexible printed circuit board allows the movable frame 163 (image sensor 51) to rotate between the horizontal position and the vertical position, and the movable frame 163 (image sensor 51) has a predetermined angle in both directions at the vertical position and the horizontal position. Allow to rotate.

  The image sensor 51 is rotatably supported with respect to the fixed frame 162 by the rotation shaft 163a of the movable frame 163 being rotatably fitted to the bearing 162a of the fixed frame 162 (FIG. 12 to FIG. 12). (See FIG. 14).

  In the fixed frame 162, the first permanent magnets 166 a and 166 b facing the coil 125 and the movable plate 163 on the surface facing the movable plate 163 in a state where the movable plate 163 is located in the laterally initial position are shown in FIG. The second permanent magnets 166c and 166d facing the coil 125 when rotated 90 ° counterclockwise from (A) are fixed. In other words, the first permanent magnets 166a and 166b and the second permanent magnets 166c and 166d are 90 ° out of phase about the rotation axis 163a.

  In the second embodiment, the movable plate 163 can swing from the horizontal position shown in FIG. 12 to the left and right, and further to the vertical position (FIG. 15) rotated 90 ° clockwise from the horizontal position. And, it is supported so as to be able to swing left and right in the vertical position. Although not shown, the rotation is restricted by a restricting member so as not to rotate outside the above rotation and swing range.

  When the coil 125 is energized while the movable plate 163 is stopped in the lateral position, the coil 125 is rotated clockwise or counterclockwise by the magnetic force generated in the coil 125 according to the energization direction and the magnetic force of the permanent magnets 166a to 166d. The magnetic force that tries to rotate in the direction acts with a force corresponding to the amount of current. The movable plate 163 is rotated by this magnetic force, and the CPU 31 can obtain the rotation amount and the rotation position from the output of the hall sensor 126.

  In this embodiment, when the movable plate 163 shown in FIG. 13 is stopped in the horizontal position and the coil 125 is energized in the vertical position direction, the movable plate 163 is moved in the vertical position direction by the magnetic force of the first permanent magnets 166a and 166b. The rotational force acts to rotate in the vertical position direction (counterclockwise), and rotate to a position where the magnetic force of the coil 125 and the magnetic forces of the permanent magnets 166a and 166b are balanced. When the energization is interrupted, the movable plate 163 returns to the horizontal position by the twisting force of the FPC 165. When the energizing direction of the coil 125 is changed to the anti-vertical position direction energization with the movable plate 163 in the horizontal position, the movable plate 163 rotates in the anti-vertical position direction (counterclockwise direction) (FIGS. 15 to 17). . In the second embodiment, the movable plate 163 can be rotated and adjusted within a range of about 15 ° from the lateral position in the left-right direction (FIG. 17).

  When the movable plate 163 is in the vertical position, the rotation can be adjusted within a range of about 15 ° from the vertical position to the left and right as in the horizontal position.

  When the movable plate 163 is rotated from the horizontal position to the vertical position, the coil 125 is energized in the vertical position direction to rotate the movable plate 163 in the vertical position direction. After rotating to the vicinity of the vertical position, the movable plate 163 can be rotated and adjusted in the horizontal direction with the vertical position as a reference by controlling the energization direction and the energization amount to the coil 125 while detecting the position by the hall sensor 126. it can.

  The driving means for rotationally driving the image sensor 51 is not limited to the illustrated embodiment, and any means may be used as long as it can rotate at least the image sensor 51 in the horizontal position and the vertical position and can further adjust the rotation in both directions in the horizontal position and the vertical position.

  Image sensor rotation adjustment in this digital camera will be described with reference to the flowchart shown in FIG. This flowchart is entered when the camera is turned on. The camera body 10 is assumed to be in a normal position (lateral position). The posture of the camera can be detected by the tilt sensor 23.

  First, it is checked whether or not the camera is in the shooting mode (S101). If the camera is in the shooting mode (S101: YES), it is checked whether or not the camera is in the horizontal position (normal position) mode (whether it matches the camera posture) (S103). If it is in the horizontal position mode (S103: YES), it is checked whether or not it is in the horizontal compensation mode (S105). If it is in the horizontal compensation mode (S105: YES), the horizontal compensation drive (S107) is executed to perform a photographing process (not shown). )) If it is not the horizontal compensation mode (S105: NO), the process proceeds directly to the photographing process. In the live view mode in which the subject is displayed on the display 45 at the time of shooting, since the posture of the camera body 10 and the posture of the image sensor 51 are the same, a horizontally long erect image may be displayed as it is on the horizontally long display. .

  When the horizontal position mode check (S103) is not in the horizontal position mode (S103: NO), that is, when the camera body 10 is in the normal position (horizontal position) and the vertical position mode is set. Then, the image sensor 51 is rotated 90 ° to be in a vertically long state (S109). In this embodiment, the coil 125 is energized in the vertical position direction. Then, it is checked whether or not the horizontal compensation mode is in the vertical position (S111). If the horizontal compensation mode is in the vertical position (S111: YES), the horizontal compensation is driven in the vertical position (S113) and the process proceeds to the photographing process. If the horizontal compensation mode is not in the vertical position (S111: YES), the process proceeds to the photographing process as it is. In the live view mode in which the subject is displayed on the display 45 at the time of shooting, since the posture of the camera body 10 and the posture of the image sensor 51 are shifted by 90 °, the captured image is rotated by 90 ° to be displayed on the horizontally long display 45 of the camera. It is easy to use when a vertically long image is displayed. In the photographing process, it is checked whether the photometry switch 35 is turned on or the release switch 36 is turned on. If the release switch 36 is turned on, imaging and image data recording processing are executed, and the power is turned on. If yes, reenter the flowchart.

  If the shooting mode check (S101) is not the shooting mode (S101: NO), the playback mode is entered (S115). In the playback mode, the image data is read from the memory card 200, and if it is a horizontal position playback image (horizontal position photographed image data) (S117: YES), the horizontal erect image is directly displayed on the horizontal display 45 by the image playback display process. If it is displayed and is not a horizontal position reproduction image (vertical position photographed image data), the reproduction image (image data) is rotated by 90 ° (S119), and an image reproduction display process is executed after the vertical position erect image is displayed on the display 45. To do.

  When the photographer operates the vertical / horizontal changeover switch in the shooting mode, the CPU 31 energizes the coil 125 to rotate the movable plate 163 from the horizontal position by 90 °, thereby bringing the image sensor 51 into the vertical position with respect to the camera body 10. Further, when the horizontal correction mode is selected, the horizontal correction operation is executed in the vertical position.

  In reproduction, it is checked whether or not the photographing position is the normal position. If the photographing position is the normal position, the image is reproduced as it is on the display 45. If the photographing position is not the normal position (vertical position), the reproduced image (image data) is 90. Rotate the screen and play it vertically on the horizontal display 45.

  As described above, according to the second embodiment of the present invention, the image sensor 51 can be rotated to the horizontal position and the vertical position with respect to the camera body 10, so that the camera body 10 is fixed to the tripod in a horizontal position, for example. In this state, vertical position shooting is possible without rotating the camera body 10, and operability is improved during shooting using a tripod. A configuration may be adopted in which the tilt angle in the left-right direction of the image sensor 51 can be manually set by a switch operation by the photographer.

The stage device 61 is shown as a device for rotating the image sensor 51. However, if the mechanism can rotate the image sensor 51 with the optical axis O or an axis parallel to the optical axis O as a rotation axis, a stage device for image blur correction is also available. Available.
The present invention can also be applied to a digital photographing apparatus provided with an image blur correction device that corrects image blur by driving part of an imaging optical system eccentrically. Further, by combining the rotation operation of the present invention and the operation of driving a part of the imaging optical system eccentrically, it can be operated as an imaging device having an equator function for automatically tracking and shooting the movement of the celestial body.

  The embodiment of the present invention applied to a digital single-lens reflex camera has been described above. However, the present invention can be applied to a digital video camera as well as a so-called compact digital camera and lens shutter digital camera.

10 Camera body 13 Main mirror 14 Sub mirror 15 Shutter unit 21 AF sensor unit 23 Tilt sensor 25 125 Coil 26 126 Hall sensor 31 Main CPU
33 DSP
35 Photometry switch 36 Release switch 37 Mode switch 38 Vertical / horizontal switch 45 Display 51 Image sensor 51a Light receiving surface 54 Low pass filter 55 Low pass filter pressing member 61 Stage device 62 Fixed frame 62a Bearing 63 Movable frame 63a Rotating shaft 66a 66b Permanent magnet 162 Fixed frame 162a Bearing 163 Movable frame 163a Rotating shaft 166a 166b 166c 166d Permanent magnet 100 Shooting lens 101 Lens CPU

Claims (6)

An image sensor support mechanism for rotating the image sensor by a rotation axis concentric with or parallel to the optical axis of the imaging optical system and holding the image sensor at an arbitrary rotation position within a predetermined rotation range with respect to the camera body; ,
Driving means for rotating the image sensor around the rotation axis;
An image sensor rotation adjustment device for a digital camera of a digital camera, comprising: control means for rotating the image sensor to a desired rotational position via the driving means. The image sensor rotation adjustment device for a digital camera according to claim 1, further comprising tilt detection means for detecting a tilt of the camera body from a horizontal direction or a vertical direction, wherein the control means is based on a detection result of the tilt detection means. An image sensor rotation adjustment device for a digital camera that rotates the image sensor via the driving means so that the long side of the light receiving surface of the image sensor is parallel to the horizontal direction or the vertical direction. 3. The image sensor rotation adjustment device for a digital camera according to claim 1, wherein the image sensor support mechanism includes a fixed frame fixed to a camera body and a movable frame on which the image sensor is mounted. Is pivotally supported by a rotation axis parallel to the optical axis of the imaging optical system with respect to the fixed frame, and the rotation axis is centered on the optical axis when mounted on the camera body. An image sensor rotation adjustment device for a digital camera that matches The imaging device rotation adjusting device for a digital camera according to claim 2 or 3, wherein the driving means includes a permanent magnet mounted on one of opposing surfaces of the fixed frame and the movable frame, and a planar coil mounted on the other. An image pickup device rotation adjustment device for a digital camera including: 5. The image sensor rotation adjustment device for a digital camera according to claim 1, further comprising a vertical / horizontal changeover switch unit, wherein the image sensor support mechanism positions the image sensor in either a vertical position or a horizontal position. And the control means rotates the image pickup device by 90 ° via the driving means when receiving the operation of the vertical / horizontal switch means. An image sensor rotation adjustment device for a digital camera that is rotated and held at either a vertical position or a horizontal position. 6. The image sensor rotation adjustment device for a digital camera according to claim 5, wherein the control unit is configured to receive the light receiving surface of the image sensor based on a detection result of the tilt detection unit when the image sensor is held in a horizontal position. When the image pickup device is driven and controlled so that the long side of the image pickup device is horizontal and the image pickup device is held in the vertical position, the long side of the light receiving surface of the image pickup device is also based on the detection result by the inclination detection unit. An image sensor rotation adjustment device for a digital camera that controls the driving means so that the vertical axis is vertical.

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