JP2006259247A - Image shake correction device - Google Patents

Image shake correction device Download PDF

Info

Publication number
JP2006259247A
JP2006259247A JP2005076737A JP2005076737A JP2006259247A JP 2006259247 A JP2006259247 A JP 2006259247A JP 2005076737 A JP2005076737 A JP 2005076737A JP 2005076737 A JP2005076737 A JP 2005076737A JP 2006259247 A JP2006259247 A JP 2006259247A
Authority
JP
Japan
Prior art keywords
lens
axis
frame
bending
imaging optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2005076737A
Other languages
Japanese (ja)
Inventor
Shigeo Enomoto
茂男 榎本
Original Assignee
Pentax Corp
ペンタックス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pentax Corp, ペンタックス株式会社 filed Critical Pentax Corp
Priority to JP2005076737A priority Critical patent/JP2006259247A/en
Publication of JP2006259247A publication Critical patent/JP2006259247A/en
Withdrawn legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image shake correction device for a bending imaging optical system using a gimbal mechanism. <P>SOLUTION: A digital camera has the bending imaging optical system. The bending imaging optical system consists of a bending optical system, a zoom lens group 22 and an imaging element 23, etc. The bending imaging optical system is held by a lens inner frame 40 and the lens inner frame 40 is further held by a lens outer frame 30. A camera main frame supports the lens outer frame 30 to be freely oscillatable centering around a yawing axis Y in parallel with a normal of a light receiving surface 23a of the imaging element 23. The lens outer frame 30 supports the lens inner frame 40 to be freely oscillatable centering around a pitch axis P perpendicular to the yawing axis Y. Thus, the camera main frame supports the bending imaging optical system to be oscillatable centering around the pitch axis P and the yawing axis Y. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an image blur correction apparatus in an imaging apparatus or the like, and more particularly to an image blur correction apparatus using a gimbal mechanism.
  2. Description of the Related Art Conventionally, an image blur correction device that detects vibrations of an imaging device and corrects the position of an imaging optical system according to the detected vibration amount in order to correct camera shake that occurs during imaging in an imaging device such as a camera. It has been known.
For example, Patent Document 1 describes an image blur correction device that displaces a correction lens in two directions perpendicular to the optical axis of an imaging optical system to decenter the imaging optical system. Patent Document 2 describes an image blur correction device using a so-called gimbal mechanism. According to this image blur correction apparatus, the image blur is corrected by rotating the image pickup element about the yaw axis and the pitch axis perpendicular to the optical axis.
Japanese Patent No. 2641172 JP 61-247170 A
  By the way, there is a strong demand for downsizing of digital cameras in recent years, and for example, digital cameras equipped with a bending optical system are becoming widespread. In such a bending optical system mounted type camera, it is not necessary to arrange the lens units in the thickness direction of the camera, so that the thickness of the camera can be reduced.
  However, in the image blur correction device described in Patent Document 1, first and second flat coils for displacing the correction lens are provided, and the first and second flat coils are the same as the correction lens. It must be provided so as to spread on a plane. Similarly, in the image blur correction apparatus described in Patent Document 2, in order to rotate the imaging element, the first and second coils must be provided, and these coils must be arranged around the lens.
  Therefore, if the image blur correction apparatus described in Patent Document 1 or 2 is applied to a bending optical system mounted camera, the camera becomes thick, and it is difficult to reduce the size of the digital camera.
  An image blur correction apparatus according to the present invention includes a bending imaging optical system including a bending optical system that bends light from a subject and an imaging element that receives light bent by the bending optical system. It is displaced in order to correct the blur of the subject image formed on the top. The image blur correction apparatus includes a first driving unit that swings and displaces the bending imaging optical system about a first axis parallel to a normal line of the light receiving surface of the image sensor, and a normal line of the light receiving surface of the image sensor. And a second driving means for swinging and displacing the bending imaging optical system about a second axis perpendicular to the second axis.
  According to the above configuration, the first drive unit can be efficiently disposed on the parallel line of the normal line of the light receiving surface of the image sensor, so that the image blur correction apparatus can be downsized. Further, when the first axis coincides with and is close to the center of gravity of the light receiving surface of the image sensor, the bending imaging optical system can be swung so that centrifugal force is not generated so much. Oscillation can be performed with a small driving force, and the oscillation can be easily controlled.
  In addition, according to such a configuration, for example, when the normal line of the imaging element is perpendicular to the thickness direction of the imaging device, the first drive unit does not have to be provided, for example, at the periphery of the bending imaging optical system The thickness of the imaging device can be reduced.
  The first driving means is preferably provided on the back side of the image sensor. Thereby, a 1st drive means can be arrange | positioned more efficiently.
  The first driving means has, for example, a coil for swinging the bending imaging optical system. The conducting wire of the coil is wound, for example, around the first axis along a vertical plane perpendicular to the first axis. For example, the coil is wound so that the longitudinal direction thereof is the direction of the second axis. According to such a configuration, the coil can efficiently swing the bending imaging optical system and is efficiently disposed.
  For example, the second drive means has a coil for swinging the bending imaging optical system. For example, the coil wire is wound around a second axis along a vertical plane perpendicular to the second axis. For example, the coil is wound so that the longitudinal direction thereof is the direction of the first axis. According to such a configuration, the coil can efficiently swing the bending imaging optical system and is efficiently disposed.
  An image blur correction apparatus according to the present invention includes a first support member that supports a bending imaging optical system in a swingable manner about either the first axis or the second axis, and the first support member And a second support member that swings and supports the other axis about the other axis. In this case, it is preferable that the bending imaging optical system is further held by a holding member, and this holding member is swingably supported by the first support member.
  Since the first driving means can be efficiently disposed on the normal line of the image sensor or on the same line parallel to the normal line, it is possible to achieve downsizing of the image pickup apparatus provided with the image blur correction device. it can.
  Embodiments according to the present invention will be described below with reference to the drawings. In the following description, a case where the imaging device is a digital camera will be described, but the imaging device is not limited to a digital camera.
  FIG. 1 shows a front view of the digital camera 10 according to the present embodiment as viewed from the front. The digital camera 10 has a camera body 11 that is a substantially rectangular parallelepiped and is thin in the thickness direction, and a photographing bending optical system (to be described later) is accommodated in the camera body 11. In the upper part of the front surface 11F of the camera body 11, an opening 12 for exposing the front surface of the bent imaging optical system is provided. On the front surface 11 </ b> F, a flash light emitting unit 13, a photometric sensor 14, and a distance measuring sensor 18 are provided beside the opening 12. On the upper surface 11U of the main body 11, a release button 15, a power button 16, and a correction switch 17 are provided.
  FIG. 2 is a rear view showing the internal structure of the camera body 11. FIG. 3 is a side view showing the internal structure of the camera body 11. When the interior of the camera body 11 is viewed from the back side, as shown in FIG. 2, most of it is occupied by the circuit board 100, and the circuit board 100 is disposed on the left side of the camera body 11 when viewed from the back side. The circuit board 100 is provided with a CPU 121, an LCD monitor 117, and the like which will be described later. A lens outer frame 30 is provided on the right side inside the camera body 11, and a bending imaging optical system is supported in the lens outer frame 30 via a lens inner frame 40. In the following description, “left / right / up / down” refers to left / right / up / down when the camera body 11 is viewed from the back side as shown in FIG. 2, unless otherwise specified.
  The bending imaging optical system includes an objective lens 20, a bending optical system 21, a zoom lens group 22, and an imaging element 23. The image sensor 23 includes a light receiving surface 23a, and captures an image by converting light received by the light receiving surface 23a into an image signal. The image sensor 23 is arranged at the lower part of the camera body 11 so that the light receiving surface 23a receives light from above, and the optical axis X extends in the vertical direction of the digital camera 10. The objective lens 20, the bending optical system 21, and the zoom lens group 22 guide light from the subject to the image sensor 23 and form a subject image on the image sensor 23. Here, the optical axis X is the optical axis of the zoom lens group 22 and extends vertically and passes through the center of gravity of the light receiving surface 23a of the image sensor 23 (the center of gravity of the effective pixel region on the light receiving surface, in other words, the center of the imaging region). The axis is parallel to the normal line of the light receiving surface 23a. The “normal line of the light receiving surface 23 a” and “optical axis X” described below are “methods” when the bending imaging optical system is supported at a neutral position by a gimbal mechanism described later, unless otherwise specified. Line "and" Optical axis X ".
  The bending optical system 21 is provided so as to face the opening 12 and is disposed so as to bend the optical path downward. In the present embodiment, a mirror is used as the bending optical system 21, but is not limited to a mirror, and a prism or the like may be used. The objective lens 20 is disposed between the opening 12 and the bending optical system 21. The zoom lens group 22 is disposed between the bending optical system 21 and the image sensor 23. The optical axis X passes through the center of the reflecting surface of the bending optical system 21 and forms an angle of 45 ° with respect to the reflecting surface.
  With the above configuration, light incident in the thickness direction of the camera 10 through the opening 12 passes through the objective lens 20 and is bent by 90 ° by the bending optical system 21. The bent light is received by the image sensor 23 through the zoom lens group 22.
  The bending imaging optical system (the objective lens 20, the bending optical system 21, the zoom lens group 22, and the imaging element 23) is held by a lens inner frame 40 that extends in the vertical direction of the camera. The lens inner frame 40 is further held by the lens outer frame 30 extending in the vertical direction of the camera. The lens outer frame (first support member) 30 supports the lens inner frame (holding member) 40 in a swingable manner, and the camera body (second support member) 11 further swings the lens outer frame 30. The bending imaging optical system is supported by a so-called gimbal mechanism. The zoom lens group 22 is composed of three lens groups, a first lens group 22a, a second lens group 22b, and a third lens group 22c.
  The lens inner frame 40 has pitch shaft portions 41 and 42 protruding in the left-right direction from the substantially central portions of the left surface 40L and the right surface 40R of the lens inner frame 40 on the same line perpendicular to the normal line of the light receiving surface 23a. Have. The pitch shaft portions 41 and 42 are rotatably engaged with pitch bearing portions 33 and 34 provided on the lens outer frame 30, respectively. Accordingly, the lens inner frame 40 is supported by the lens outer frame 30 so as to be swingable about the pitch axis P perpendicular to the normal line of the light receiving surface 23a.
  The lens outer frame 30 includes yaw shaft portions 31 and 32 that protrude in the vertical direction of the camera 10 so as to coincide with the optical axis X. The yaw shaft portions 31 and 32 protrude from substantially the center of the lower surface 30D and the upper surface 30U of the lens outer frame 30, and are respectively provided inside the camera body 11 and rotatably engaged with yaw bearing portions 53 and 54. Thus, the lens outer frame 30 is supported by the camera body 11 so as to be swingable about the yaw axis Y coinciding with the optical axis X. Note that the positions where the yaw shaft portions 31 and 32 (that is, the yaw axis Y) are provided are not limited to the optical axis X, but may be on the same line parallel to the optical axis X. As long as it is parallel to the normal line.
  Here, the yaw shaft portion 32 protruding downward from the lens outer frame 30 is longer than the yaw shaft portion 31 protruding upward, and the yaw bearing portion 54 provided on the lower surface 11D of the camera is also included. It protrudes upward from the lower surface 11D. Therefore, a fixed gap is provided between the lens outer frame 30 and the lower surface 11D of the camera body 11, and a first drive mechanism for swinging the lens outer frame 30 is provided in this gap. That is, the first drive mechanism is disposed on the back side of the image sensor 23 on the optical axis X (that is, the yaw axis Y).
  The first drive mechanism includes a yaw coil 55, first and second permanent magnets 56A and 56B, and a yoke 57 made of a soft magnetic material. As shown in FIG. 3, the yoke 57 includes a lower surface 57A that is fixed to the lower surface 11D of the camera body, a side surface 57B that is connected to the lower surface 57A and extends along the front surface 11F of the camera body, and a lower surface 57A that is connected to the side surface 57B. When viewed along the pitch axis P, the cross-sectional shape of the upper surface 57C is substantially U-shaped. The lower surface 57A, the side surface 57B, and the upper surface 57C extend in substantially the same length in the direction in which the pitch axis P extends. The lower surface 57A and the upper surface 57C are arranged in the width direction (left and right direction in FIG. 3) from the U-shaped opening side in order to allow the yaw shaft portion 32 (or the yaw bearing portion 54) to pass through the yoke 57, respectively. The cutout portions 57D and 57E are cut out over substantially the whole (see FIG. 2). The notches 57D and 57E are located at substantially the center in the longitudinal direction of the lower surface 57A and the upper surface 57C, and the yaw axis Y is provided so as to pass through the approximate centers of the lower surface 57A and the upper surface 57C.
  Inside the U-shaped concave portion of the yoke 57, a yaw coil 55 and first and second permanent magnets 56A and 56B are provided. The yaw coil 55 is fixed to the lower surface 30D of the lens outer frame 30 via a fixing member 55B. The yaw coil 55 is a flat coil, and the lead wire of the yaw coil 55 is wound around a hollow portion 55A in a vertical plane perpendicular to the yaw axis Y, and the yaw shaft portion 32 (or yaw bearing) is centered on the hollow portion 55A. Part 54) is inserted. The longitudinal direction of the yaw coil 55 extends in the direction of the pitch axis P substantially the same as the length of the yoke 57. A hall sensor 59 fixed to the fixing member 55B is provided at the end of the hollow portion 55A. The hall sensor 59 detects the amount of displacement of the fixing member 55B, that is, the lens outer frame 30. Here, the detected displacement amount is the displacement amount of the digital camera 10 in the thickness direction. The first permanent magnet 56A and the second permanent magnet 56B are fixed on the lower surface 57A with a notch 57D disposed therebetween.
  When a current flows through the yaw coil 55, an electromagnetic force is applied to the fixing member 55B of the yaw coil 55, and the lens outer frame 30 connected to the fixing member 55B swings in the yawing direction about the yaw axis Y by this electromagnetic force. Be moved.
  The pitch shaft portion 42 protruding rightward from the lens inner frame 40 is longer than the pitch shaft portion 41 protruding leftward, and a pitch bearing portion 34 provided on the right surface 30R of the lens outer frame 30 is also provided. Projecting toward the inside of the lens outer frame 30 is provided. Therefore, a fixed gap is provided between the lens inner frame 40 and the right surface 30R, and a second drive mechanism for swinging the lens inner frame 40 is provided in this gap. The second drive mechanism is disposed on the pitch axis P inside the lens outer frame 30.
  The second drive mechanism has the same configuration as the first drive mechanism, and includes a pitch coil 75, first and second permanent magnets 76A and 76B, and a yoke 77. The yoke 77 has a lower surface 77A that is fixed to the right surface 30R of the camera outer frame 30, a side surface 77B that is continuous with the lower surface 77A and extends along the front surface 11F of the camera body, and a continuous surface with the side surface 77B that faces the lower surface 77A. When viewed along the yaw axis Y, the cross-sectional shape is substantially U-shaped. The lower surface 77A, the side surface 77B, and the upper surface 77C extend in substantially the same length in the direction in which the yaw axis Y extends. The lower surface 77A and the upper surface 77C are arranged in the width direction (the left-right direction in FIG. 3) from the U-shaped opening side so that the pitch shaft portion 42 (or the pitch bearing portion 34) is inserted through the yoke 77. ) Having notches 77D and 77E cut out over substantially the whole. The notches 77D and 77E are located at substantially the center in the longitudinal direction of the lower surface 77A and the upper surface 77C, that is, the pitch axis P is provided so as to pass through the approximate center of the lower surface 77A and the upper surface 77C.
  A pitch coil 75 and first and second permanent magnets 76A and 76B are provided inside the U-shaped recess of the yoke 77. The pitch coil 75 is fixed to the right surface 40R of the lens inner frame 40 via a fixing member 75B. The pitch coil 75 is a flat coil, and the lead wire of the pitch coil 75 is wound around the hollow portion 75A in a vertical plane perpendicular to the pitch shaft portions 41 and 42, and the pitch axis P is centered on the hollow portion 75A. Is inserted. The pitch coil 75 extends in the direction of the yaw axis Y in the longitudinal direction substantially the same as the length of the yoke 77. In addition, a hall sensor 79 fixed to the fixing member 75B is provided at the end of the hollow portion 75A. The hall sensor 79 detects the amount of displacement of the fixing member 75B, that is, the lens inner frame 40. Here, the detected displacement amount is the displacement amount of the digital camera 10 in the thickness direction. The first permanent magnet 76A and the second permanent magnet 76B are fixed on the lower surface 77A with a notch 77D disposed therebetween.
  When a current is passed through the pitch coil 75, an electromagnetic force is applied to the fixing member 75B of the pitch coil 75, and the lens inner frame 30 connected to the fixing member 75B moves in the pitching direction about the pitch axis P by this electromagnetic force. Can be swung.
  As described above, in this embodiment, the bending imaging optical system is held by the lens inner frame 40, and the lens inner frame 40 is supported by the lens outer frame 30 so as to be swingable about the pitch axis P. Therefore, the lens inner frame 40, that is, the bent imaging optical system can swing with respect to the lens outer frame 30. The lens outer frame 30 is supported so as to be swingable about the yaw axis Y with respect to the camera body 11, and can swing relative to the camera body 11. With the above configuration, the bending imaging optical system can swing about the pitch axis P and can swing about the yaw axis Y with respect to the camera body 11.
  In the present embodiment, the yaw axis Y, which is the center of oscillation of the lens outer frame 30, is provided in parallel to the normal line of the light receiving surface 23a. Can be disposed on the parallel lines. Therefore, it is not necessary to dispose the first drive mechanism around the lens outer frame 30, so that the thickness of the camera body 11 can be reduced.
  In this embodiment, when the yaw axis Y, which is the center of oscillation, coincides with the optical axis X (that is, the center of gravity of the light receiving surface 23a) and is provided close to the optical axis X, the bending imaging optical system is oscillated. Even if it is made, centrifugal force does not generate much. Therefore, the bending imaging optical system can be swung with a small driving force. Further, since the influence of the centrifugal force is small, the bending imaging optical system can be oscillated and displaced to the target position without error.
  In the present embodiment, the lens outer frame 30 is swung around the yaw axis Y parallel to the normal line of the light receiving surface 23a, and the lens inner frame 40 is pitch axis P perpendicular to the normal line of the light receiving surface 23a. The lens inner frame 40 is swung around the yaw axis Y parallel to the normal line of the light receiving surface 23a, and the lens outer frame 30 has a pitch perpendicular to the normal line of the light receiving surface 23a. It may be swung around the axis P.
  Furthermore, in the present embodiment, the normal line of the imaging surface 23 a extends in the vertical direction of the camera body 11, but may extend in the horizontal direction of the camera body 11. Moreover, if the form of the camera body 11 is different, the normal line of the image sensor 23 may extend in another direction.
  FIG. 4 shows a circuit configuration diagram of the digital camera 10 according to the present embodiment. A CPU 121 provided in the digital camera 10 controls the overall operation of the digital camera 10. The part relating to the imaging of the digital camera 10 includes a release button 15 (see FIG. 1) for switching on / off of the main power source, a power button 16 (see FIG. 1), a bending imaging optical system including the imaging device 23, an LCD monitor 117, a CPU 121, The imaging block 122, the AE unit 123, and the AF unit 124 are included. Corresponding to pressing of the power button 16, the on / off state of the Pon switch 16a is switched, whereby the on / off state of the digital camera 10 is switched. The image pickup device 23 is driven by the image pickup block 122, and an image received on the light receiving surface 23a (see FIG. 2) is converted into an image signal, and the image signal is input to the CPU 121 via the image pickup block 122. The input image signal is displayed as an image captured on the LCD monitor 117. The LCD monitor 117 is provided on the back side of the camera body 11, for example.
  When the release button 15 is half-pressed, the photometry switch 12a is turned on to perform photometry, distance measurement, and focusing operation. When the release button 15 is fully pressed, the release switch 13a is turned on to perform photographing, and a photographed image is taken. Is recorded in the memory. In the photographing operation, the flash light emitting unit 13 is appropriately driven, and the flash light is irradiated toward the subject.
  The AE unit 123 uses the photometric sensor 14 (see FIG. 1) to calculate the exposure value by performing the photometric operation of the subject, and calculates the aperture value and the exposure time necessary for photographing based on the exposure value. The AF unit 124 performs distance measurement using the distance measurement sensor 18 (see FIG. 1), and performs focus adjustment by displacing the first lens group 22a of the zoom lens group 22 in the optical axis X direction based on the distance measurement result. It should be noted that the magnification of the image formed on the image sensor 23 can be changed by displacing the second lens group 22b and the third lens group 22c of the zoom lens group 22 in the optical axis X direction.
  The portion relating to image blur correction of the digital camera 10 includes a first image blur correction button 17 (see FIG. 1), a CPU 121, an angular velocity detection unit 125, a driver circuit 129, a position detection unit 146, a yaw coil 55, a pitch coil 75, and the like. And a second drive mechanism.
  When the image blur correction button 17 is pressed, the image blur correction switch 14a is turned on, and the angular velocity detection unit 125, the position detection unit 146, the driver circuit 129, and the like are driven independently of other operations such as photometry. Thus, image blur correction is performed at regular intervals. In the present embodiment, this fixed time will be described as 1 ms.
  The angular velocity detection unit 125 includes first and second angle sensors 126 and 127, and an amplifier / high pass filter circuit 128. The first and second angle sensors 126 and 127 are respectively fixed to the digital camera body 11 and detect camera shake caused by camera shake or the like of the digital camera 10. The position detection unit 146 includes Hall sensors 59 and 79 and a Hall element signal processing circuit 145.
  The first angle sensor 126 detects the yaw angular velocity for every fixed time (1 ms) in the yawing direction rotating around the yaw axis Y of the camera body 11, and the second angle sensor 127 detects the pitch axis P of the camera body 11. The pitch angular velocity is detected every fixed time (1 ms) in the pitching direction rotating around the center. The amplifier / high-pass filter circuit 128 amplifies the signal related to the angular velocity, cuts the null voltage and panning of the first and second angular velocity sensors 126, 127, and outputs an analog signal as the yaw angular velocity vy and the pitch angular velocity vp. Input to / D0 and A / D1.
  The CPU 121 performs A / D conversion on the yaw angular velocity vy and the pitch angular velocity vp input to A / D0 and A / D1, and then the image blur amount generated in a certain time (1 ms) by a conversion coefficient considering the focal length and the like. Is calculated. Here, as the image blur amount, the image blur amount in the yawing direction is calculated from the yaw angular velocity vy, and the image blur amount in the pitching direction is calculated from the pitch angular velocity vp. The CPU 121 calculates a target angular position sy to be swung in the yawing direction of the bending imaging optical system for correcting the image blur according to the image blur amount in the yawing direction obtained by the calculation. Further, the CPU 121 calculates a target angular position sp to be swung in the pitching direction of the bending imaging optical system for correcting the image blur according to the image blur amount in the pitching direction.
  The CPU 121 calculates the driving force required to swing the lens outer frame 30 and the lens inner frame 40 to the target angular positions sy and sp, respectively. The necessary driving force is output from the PWM0 and PWN1 of the CPU 121 to the driver circuit 129 as the first and second PWM duties dy and dp, respectively. In the driver circuit 129, electric power is supplied to the yaw coil 55 and the pitch coil 75 according to the first and second PWM duties dy and dp, respectively, so that the lens outer frame 30 and the lens inner frame 40 are swung.
  Hall sensors 59 and 79 detect displacement amounts of the lens outer frame 30 and the lens inner frame 40 in the camera thickness direction, respectively. The detected displacement amount is input to the A / D2 and A / D3 of the CPU 121 as the position detection signals ly and lp via the Hall element signal processing circuit 145, and A / D converted. Here, since the swing amount of the lens outer frame 30 and the lens inner frame 40 is very small, the swing of the lens outer frame 30 and the lens inner frame 40 is determined from the amount of displacement in the thickness direction of the lens outer frame 30 and the lens inner frame 40. The movement amounts ldy and ldp can be approximated. Therefore, the CPU 121 calculates the swing amounts ldy and ldp of the lens outer frame 30 and the lens inner frame 40 based on the A / D converted position detection signals ly and lp.
  The first and second PWM duties dy and dp are PID controlled by the target angular positions sp and sy and the swing amounts ldy and ldp. Accordingly, the driving force of the coils 55 and 75 is controlled so that the lens outer frame 30 and the lens inner frame 40 can be displaced to the target angular positions sp and sy while referring to the swing amounts detected by the Hall sensors 59 and 79. The
  As described above, in the present embodiment, when a swing in the yawing direction is detected by the first angle sensor 126, the lens outer frame 30 (that is, the bending imaging optical system) is opposite to the swing direction by the driver circuit 129. Is swung in the yawing direction. As a result, image blur in the yawing direction that occurs in the image sensor is reduced. On the other hand, the lens inner frame 40 (that is, the bending imaging optical system) is swung in the pitching direction opposite to the shaking direction by the driver circuit 129 so as to cancel the shaking in the pitching direction detected by the second angle sensor 127. It is done. Thereby, image blurring in the pitching direction generated in the image sensor is reduced.
  The swinging of the lens inner frame 40 and the lens outer frame 30 is PID controlled while detecting the swinging amounts of the lens inner frame 40 and the lens outer frame 30 detected by the Hall sensors 59 and 79. Therefore, in this embodiment, the bending imaging optical system can be reliably oscillated and displaced to the target angular positions sy and sp.
It is a typical front view of the digital camera which concerns on this embodiment. It is a rear view which shows the internal structure of a digital camera. It is a side view which shows the internal structure of a digital camera. It is a circuit block diagram of a digital camera.
Explanation of symbols
DESCRIPTION OF SYMBOLS 10 Digital camera 11 Camera main body 12 Aperture 20 Objective lens 21 Bending optical system 22 Zoom lens group 23 Image pick-up element 23a Light-receiving surface 30 Lens outer frame 31, 32 Yaw shaft part 33, 34 Pitch bearing part 40 Lens inner frame 41, 42 Pitch axis Part 53, 54 Yaw bearing part 55 Yaw coil 57, 77 Yoke 75 Pitch coil P Pitch axis X Optical axis Y Yaw axis

Claims (7)

  1. A subject image formed on a light-receiving surface of the imaging element, a bending imaging optical system including a bending optical system that bends light from the subject and an imaging element that receives light bent by the bending optical system. In the image blur correction device that is displaced to correct the blur,
    First driving means for swinging and displacing the bent imaging optical system about a first axis parallel to the normal line of the light receiving surface of the imaging element;
    An image blur correction apparatus comprising: a second driving unit configured to swing and displace the bent imaging optical system about a second axis perpendicular to a normal line of a light receiving surface of the imaging element.
  2.   The image blur correction apparatus according to claim 1, wherein the first driving unit is provided on a back side of the image sensor.
  3.   The first driving means has a coil for swinging the bending imaging optical system, and the coil has a conducting wire around the first axis and along a vertical plane perpendicular to the first axis. The image blur correction device according to claim 1, wherein the image blur correction device is curled.
  4.   The first driving means includes a coil for swinging the bending imaging optical system, and the coil is wound so that a longitudinal direction thereof is a direction of the second axis. The image blur correction device according to 1.
  5.   The second driving means has a coil for swinging the bending imaging optical system, and the coil has a conducting wire around the second axis and along a vertical plane perpendicular to the second axis. The image blur correction device according to claim 1, wherein the image blur correction device is curled.
  6.   The second driving means includes a coil for swinging the bent imaging optical system, and the coil is wound so that a longitudinal direction thereof is a direction of the first axis. The image blur correction device according to 1.
  7. A first support member that swings and supports the bending imaging optical system about one of the first axis and the second axis;
    The image blur correction apparatus according to claim 1, further comprising: a second support member that swings and supports the first support member about the other axis.
JP2005076737A 2005-03-17 2005-03-17 Image shake correction device Withdrawn JP2006259247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005076737A JP2006259247A (en) 2005-03-17 2005-03-17 Image shake correction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005076737A JP2006259247A (en) 2005-03-17 2005-03-17 Image shake correction device

Publications (1)

Publication Number Publication Date
JP2006259247A true JP2006259247A (en) 2006-09-28

Family

ID=37098588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005076737A Withdrawn JP2006259247A (en) 2005-03-17 2005-03-17 Image shake correction device

Country Status (1)

Country Link
JP (1) JP2006259247A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010096858A (en) * 2008-10-14 2010-04-30 Nidec Sankyo Corp Optical unit with shake correcting function
CN101261421B (en) * 2007-03-07 2012-02-15 株式会社尼康 Image illegibility correcting unit, lens barrel and camera
EP2653901A1 (en) 2012-04-20 2013-10-23 Hoya Corporation Imaging apparatus
US8837929B2 (en) 2012-09-25 2014-09-16 Hoya Corporation Imaging apparatus
US9020334B1 (en) 2013-10-17 2015-04-28 Hoya Corporation Imaging apparatus
US9025945B2 (en) 2012-09-25 2015-05-05 Hoya Corporation Imaging apparatus
US9063346B2 (en) 2013-10-17 2015-06-23 Hoya Corporation Imaging apparatus
US9063347B2 (en) 2013-10-17 2015-06-23 Hoya Corporation Imaging apparatus
US9335560B2 (en) 2014-01-30 2016-05-10 Hoya Corporation Imaging apparatus
US9338357B2 (en) 2014-01-30 2016-05-10 Hoya Corporation Imaging apparatus
US9423629B2 (en) 2013-02-04 2016-08-23 Hoya Corporation Imaging apparatus
US9606370B2 (en) 2013-02-04 2017-03-28 Hoya Corporation Imaging apparatus
US9635264B2 (en) 2014-01-30 2017-04-25 Hoya Corporation Imaging apparatus

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60143330A (en) * 1983-12-29 1985-07-29 Matsushita Electric Ind Co Ltd Photographic device
JPS6258784A (en) * 1985-09-06 1987-03-14 Canon Inc Shock proof image pickup device
JPS63254870A (en) * 1987-04-10 1988-10-21 Matsushita Electric Ind Co Ltd Photographing device
JPH01123576A (en) * 1987-11-06 1989-05-16 Matsushita Electric Ind Co Ltd Photographing device
JPH03132174A (en) * 1989-10-17 1991-06-05 Mitsubishi Electric Corp Image pickup device
JPH0646314A (en) * 1992-01-14 1994-02-18 Matsushita Electric Ind Co Ltd Two-dimensional driving device
JPH07104335A (en) * 1993-09-29 1995-04-21 Victor Co Of Japan Ltd Automatic object follow-up device
JPH0918776A (en) * 1995-06-29 1997-01-17 Mitsubishi Electric Corp Vibration-proof device for camera
JPH11297011A (en) * 1998-04-10 1999-10-29 Sony Corp Magnetic head positioning device and magnetic disk drive using it
JP2004219930A (en) * 2003-01-17 2004-08-05 Minolta Co Ltd Camera with camera-shake correction function
JP2006149106A (en) * 2004-11-19 2006-06-08 Konica Minolta Photo Imaging Inc Servo drive method for stepping motor, drive mechanism, and imaging device
JP2006166202A (en) * 2004-12-09 2006-06-22 Konica Minolta Photo Imaging Inc Optical device and digital camera

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60143330A (en) * 1983-12-29 1985-07-29 Matsushita Electric Ind Co Ltd Photographic device
JPS6258784A (en) * 1985-09-06 1987-03-14 Canon Inc Shock proof image pickup device
JPS63254870A (en) * 1987-04-10 1988-10-21 Matsushita Electric Ind Co Ltd Photographing device
JPH01123576A (en) * 1987-11-06 1989-05-16 Matsushita Electric Ind Co Ltd Photographing device
JPH03132174A (en) * 1989-10-17 1991-06-05 Mitsubishi Electric Corp Image pickup device
JPH0646314A (en) * 1992-01-14 1994-02-18 Matsushita Electric Ind Co Ltd Two-dimensional driving device
JPH07104335A (en) * 1993-09-29 1995-04-21 Victor Co Of Japan Ltd Automatic object follow-up device
JPH0918776A (en) * 1995-06-29 1997-01-17 Mitsubishi Electric Corp Vibration-proof device for camera
JPH11297011A (en) * 1998-04-10 1999-10-29 Sony Corp Magnetic head positioning device and magnetic disk drive using it
JP2004219930A (en) * 2003-01-17 2004-08-05 Minolta Co Ltd Camera with camera-shake correction function
JP2006149106A (en) * 2004-11-19 2006-06-08 Konica Minolta Photo Imaging Inc Servo drive method for stepping motor, drive mechanism, and imaging device
JP2006166202A (en) * 2004-12-09 2006-06-22 Konica Minolta Photo Imaging Inc Optical device and digital camera

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101261421B (en) * 2007-03-07 2012-02-15 株式会社尼康 Image illegibility correcting unit, lens barrel and camera
JP2010096858A (en) * 2008-10-14 2010-04-30 Nidec Sankyo Corp Optical unit with shake correcting function
EP2653901A1 (en) 2012-04-20 2013-10-23 Hoya Corporation Imaging apparatus
US9204049B2 (en) 2012-04-20 2015-12-01 Hoya Corporation Imaging apparatus
US10048507B2 (en) 2012-04-20 2018-08-14 Hoya Corporation Imaging apparatus
US9025945B2 (en) 2012-09-25 2015-05-05 Hoya Corporation Imaging apparatus
US8837929B2 (en) 2012-09-25 2014-09-16 Hoya Corporation Imaging apparatus
US9606370B2 (en) 2013-02-04 2017-03-28 Hoya Corporation Imaging apparatus
US9423629B2 (en) 2013-02-04 2016-08-23 Hoya Corporation Imaging apparatus
US9020334B1 (en) 2013-10-17 2015-04-28 Hoya Corporation Imaging apparatus
US9063346B2 (en) 2013-10-17 2015-06-23 Hoya Corporation Imaging apparatus
US9063347B2 (en) 2013-10-17 2015-06-23 Hoya Corporation Imaging apparatus
US9335560B2 (en) 2014-01-30 2016-05-10 Hoya Corporation Imaging apparatus
US9338357B2 (en) 2014-01-30 2016-05-10 Hoya Corporation Imaging apparatus
US9635264B2 (en) 2014-01-30 2017-04-25 Hoya Corporation Imaging apparatus

Similar Documents

Publication Publication Date Title
JP5169499B2 (en) Imaging device and imaging apparatus
JP5212396B2 (en) Focus detection device
US7634178B2 (en) Image stabilizing apparatus and image pickup apparatus
JP5003216B2 (en) Imaging device and optical device
JP5129638B2 (en) Imaging device
US7969499B2 (en) Lens barrel and image pickup apparatus
JP4332583B2 (en) Lens barrel and imaging device provided with the same
JP4626780B2 (en) Camera shake correction device
US8212860B2 (en) Digital camera having an image mover
JP5315751B2 (en) Imaging device
JP5439732B2 (en) Imaging device
JP4874591B2 (en) Stage device and camera shake correction device using the stage device
JP4717382B2 (en) Optical equipment
US7479985B2 (en) Variable magnification lens having image stabilizing function
US7693405B2 (en) Image pickup device, method of controlling image pickup device, and recording medium
JP3829773B2 (en) Imaging apparatus and centering information acquisition method
US7653293B2 (en) Camera system with image stabilizing function, camera body thereof, and interchangeable lens thereof
US7437064B2 (en) Drive mechanism for camera
US8040381B2 (en) Image blur correction for a camera system and display of comparison of camera and lens blur correction specifications
JP5439733B2 (en) Imaging device
JP3988220B2 (en) Camera system, camera body and interchangeable lens
JP2006208691A (en) Imaging apparatus, its camera main body, and interchangeable lens
JP2006091473A (en) Image blur correcting apparatus
JP2008048013A (en) Camera main body and camera system having same
JP5800611B2 (en) Imaging device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080125

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20080501

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100928

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20101101