Abstract:
Provided is a photographing apparatus including at least one shake correction lens through which image light is transmitted; a first driving unit moving the shake correction lens; an imaging device converting the image light transmitted through the shake correction lens to an electronic signal; a rotating unit rotating the imaging device about an optical axis of the image light; and a controller controlling the first driving unit and the rotating unit. A method on a photographing apparatus. The method including sensing shaking of the photographing apparatus; compensating for the shaking of the photographing apparatus by rotating an imaging device, the imaging device generating electrical signals from light incident to a subject image; and compensating for the shaking of the photographing apparatus by moving a shake correction lens in two directions, wherein light incident to the subject image passes through the shake correction lens and strikes the imaging device.

Description:
CROSS-REFERENCE TO RELATED PATENT APPLICATION 
       [0001]    This application claims the benefit of Korean Patent Application No. 10-2008-0133784, filed on Dec. 24, 2008 in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to a photographing apparatus, and more particularly, to a photographing apparatus correcting a shake during photographing. 
         [0004]    2. Description of the Related Art 
         [0005]    Consumers are increasingly demanding high quality still images and moving images from photographing apparatuses. 
         [0006]    Image quality may be diminished if the photographing apparatus is shaken during photographing. One method to compensate for shake during photographing is an electronic shake correction method. The electronic shake correction method may improve image quality by detecting the shake of the photographing apparatus from a series of photographed images and then adjusting the locations and colors of the photographed images to compensate for the detected shake. 
         [0007]    However, images generated with the electronic shake correction may have afterimages. 
       SUMMARY OF THE INVENTION 
       [0008]    The present invention provides a photographing apparatus having a high-performance shake correction function. 
         [0009]    According to an aspect of the present invention, there is provided a photographing apparatus including at least one shake correction lens through which image light is transmitted; a first driving unit moving the shake correction lens; an imaging device converting the image light transmitted through the shake correction lens to an electronic signal; a rotating unit rotating the imaging device about an optical axis of the image light; and a controller controlling the first driving unit and the rotating unit. 
         [0010]    The first driving unit may move the shake correction lens in a perpendicular direction to the optical axis of the image light. 
         [0011]    The first driving unit including a pair of actuators, wherein a portion of each of the pair of actuators may be connected to the shake correction lens. 
         [0012]    The first driving unit may include at least one of an ultrasonic motor, a voice coil motor and a step motor. 
         [0013]    The imaging device may include a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). 
         [0014]    The rotating unit may include a frame having a rotation hole; a second driving unit mounted in the frame, and including an operating unit moving linearly; a rotation guiding unit is installed in the rotation hole so as to be capable of rotating, the rotation guiding unit where the imaging device is mounted; and a link unit connected to the rotating guiding unit, and receiving power from the operating unit of the second driving unit to rotate the rotation guiding unit. 
         [0015]    The second driving unit may include at least one of an ultrasonic motor, a voice coil motor and a step motor. 
         [0016]    The rotation guiding unit may include a rotation connection unit connected to the link unit, a slot may be formed in the link unit, and a connection pin installed in the rotation connection unit may pass through the slot so that the link unit and the rotation connection unit are connected to each other. 
         [0017]    A linear motion of the link unit may be converted to a rotation motion of the rotation guiding unit by the connection pin. 
         [0018]    The photographing apparatus may further include at least one sensor unit measuring a shake of the photographing apparatus and transmitting a result of the measuring to the controlling unit. 
         [0019]    The at least one sensor unit may include a gyro sensor measuring rotation motion. 
         [0020]    According to another aspect of the present invention, there is provided a photographing apparatus including at least one lens group through which image light is transmitted; an imaging device converting the image light transmitted through the lens group to an electronic signal; a rotating unit rotating the imaging device about an optical axis of the image light; and a controller controlling the rotating unit. 
         [0021]    The imaging device may include a CCD or a CMOS. 
         [0022]    The rotating unit may include a frame comprising a rotation hole; a driving unit mounted in the frame, and including an operating unit moving linearly; a rotation guiding unit is installed in the rotation hole so as to be capable of rotating, the rotation guiding unit where the imaging device is mounted; and a link unit connected to the rotating guiding unit, and receiving power from the operating unit of the second driving unit to rotate the rotate guiding unit. 
         [0023]    The driving unit may include at least one of an ultrasonic motor, a voice coil motor and a step motor. 
         [0024]    The rotation guiding unit may include a rotation connection unit connected to the link unit, wherein a slot may be formed in the link unit, and a connection pin installed in the rotation connection unit may pass through the slot so that the link unit and the rotation connection unit are connected to each other. 
         [0025]    A linear motion of the link unit may be converted to a rotation motion of the rotation guiding unit by the connection pin. 
         [0026]    The photographing apparatus may further include at least one sensor unit measuring a shake of the photographing apparatus and transmitting a result of the measuring to the controlling unit. 
         [0027]    The at least one sensor unit may include a gyro sensor measuring rotary motion. 
         [0028]    A method on a photographing apparatus is provided. The method including sensing shaking of the photographing apparatus; compensating for the shaking of the photographing apparatus by rotating an imaging device, the imaging device generating electrical signals from light incident to a subject image; and compensating for the shaking of the photographing apparatus by moving a shake correction lens in two directions, wherein light incident to the subject image passes through the shake correction lens and strikes the imaging device. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0029]    The above and other features and advantages will become more apparent by describing in detail exemplary embodiments with reference to the attached drawings in which: 
           [0030]      FIG. 1  is a perspective view of an example of a photographing apparatus according to an embodiment of the present invention; 
           [0031]      FIG. 2  is a block diagram illustrating an example of internal elements of the photographing apparatus of  FIG. 1 ; 
           [0032]      FIG. 3  is a perspective view of an example of a lens unit of the photographing apparatus of  FIG. 1 ; 
           [0033]      FIGS. 4 and 5  illustrate an example where a shake correction lens is moved in order to correct a shake of a photographing apparatus; 
           [0034]      FIG. 6  is a perspective back view of an example of a photographing apparatus; 
           [0035]      FIG. 7  is a perspective view of an example of a rotating unit of a photographing apparatus; 
           [0036]      FIG. 8  is an exploded perspective view illustrating an example of a method of connecting a link unit to a rotate connection unit; and 
           [0037]      FIGS. 9 through 11  illustrate an example where an example of an imaging device is moved in order to correct a shake thereof. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0038]    Therefore, there is a need in the art for photographing apparatuses with shake correction for improving the clarity of images which may be caused by a user&#39;s hand shaking or external shocks. 
         [0039]      FIG. 1  is a perspective view of an example of a photographing apparatus  100 .  FIG. 2  is a block diagram illustrating an example of internal elements of the photographing apparatus  100  of  FIG. 1 .  FIG. 3  is a perspective view of an example of a lens unit  110  of the photographing apparatus  100  of  FIG. 1 . 
         [0040]    Referring to  FIG. 1 , the photographing apparatus  100  is a single-lens reflex digital camera from which a lens unit  110  can be detached, if necessary. 
         [0041]    As a whole, the photographing apparatus  100  includes the lens unit  110  and a main body  120 . 
         [0042]    The lens unit  110  includes a lens group  111  and a lens frame  112 , and transfers image light bouncing off a subject to be photographed to the main body  120 . 
         [0043]    The lens group  111  transmits the image light bouncing off the subject, and includes a zoom lens, a focus lens, an iris, and so on. The zoom lens is moved along an optical axis to vary a focal length, which may vary the size of the subject image. The focus lens focuses a focal point. The iris adjusts an amount of light to be incident on the imaging device in order to photograph the subject. 
         [0044]    An example of a shake correction lens  111   a  is disposed in the lens group  111 , as illustrated in  FIG. 3 . The shake correction lens  111   a  corrects a shake of the photographing apparatus  100  by controlling the motion of the shake correction lens  111   a  in a direction so as to offset the shake of the photographing apparatus  100 . 
         [0045]    The lens group  111  includes at least one single shake correction lens. In embodiments, the lens group  111  may include at least two shake correction lenses. The lens group  111  is mounted in the lens frame  112 . A first driving unit  112   a,  a first elastic member  112   b,  and a second elastic member  112   c,  which control the motion of the shake correction lens  111   a,  are disposed in the lens frame  112 . 
         [0046]    The first driving unit  112   a  includes a first actuator  112   a _ 1  and a second actuator  112   a _ 2 . Each of the first actuator  112   a _ 1  and the second actuator  112   a _ 2  includes a voice coil motor (VCM). 
         [0047]    The first driving unit  112   a  includes two actuators, that is, the first actuator  112   a _ 1  and the second actuator  112   a _ 2 . In embodiments, the number of actuators included in the first driving unit  112   a  may be one actuators or three or more actuators. 
         [0048]    The first driving unit  112   a  includes a VCM. In embodiments, the first driving unit  112   a  may include an ultrasonic motor, or alternatively, may include a step motor. 
         [0049]    An end of an element  112   a _ 12  of the first actuator  112   a _ 1  and an end of an element  112   a _ 21  of the second actuator  112   a _ 2  are connected to the shake correction lens  111   a.  Since the first actuator  112   a _ 1  and the second actuator  112   a _ 2  are disposed in a perpendicular direction to each other, and the first actuator  112   a _ 1  and the second actuator  112   a _ 2  move the shake correction lens  111   a  in x-axis and y-axis directions, respectively. 
         [0050]    The first actuator  112   a _ 1  and the second actuator  112   a _ 2  are mounted in the lens frame  112  so as to be capable of rotating by a predetermined angle. To achieve this, the first actuator  112   a _ 1  and the second actuator  112   a _ 2  are mounted to the lens frame  112  by a first mounting unit  112   a _ 3  and a second mounting unit  112   a _ 4  using a hinge structure, respectively. 
         [0051]    The first elastic member  112   b  and the second elastic member  112   c  restore a position of the shake correction lens  111   a  to a start position. Together with the first actuator  112   a _ 1  and the second actuator  112   a _ 2 , the first elastic member  112   b  and the second elastic member  112   c  control the motion of the shake correction lens  111   a  in the x-axis and y-axis directions. 
         [0052]    Each of the first elastic member  112   b  and the second elastic member  112   c  includes a cylindrical coiled spring. One end of each of the first elastic member  112   b  and the second elastic member  112   c  is mounted in the lens frame  112 , and other end of each of the first elastic member  112   b  and the second elastic member  112   c  is mounted to the shake correction lens  111   a.    
         [0053]    According to the present embodiment, each of the first elastic member  112   b  and the second elastic member  112   c  includes a cylindrical coiled spring. In embodiments, the shapes and materials of the first elastic member  112   b  and the second elastic member  112   c  are not particularly limited as long as the first elastic member  112   b  and the second elastic member  112   c  are sufficiently elastic. 
         [0054]    According to the present embodiment, the lens unit  110  includes the first elastic member  112   b  and the second elastic member  112   c.  In embodiments, the lens unit  110  may not include the first elastic member  112   b  and the second elastic member  112   c.    
         [0055]    As illustrated in  FIG. 2 , the main body  120  includes a shutter  121 , an imaging device  122 , a correlated double sampling (CDS) circuit  123  integrated with an amplifier, an analog/digital (A/D) converter  124 , an image input controller  125 , a white balance adjuster  126 , a compression processing circuit  127 , a display-unit driver  128 , a display unit  129 , a timing generator  130 , a controller  131 , an input unit  132 , a memory  133 , a video random access memory (VRAM)  134 , a medium controller  135 , a recording medium  136 , a rotating unit  137 , a first sensor  141 , a second sensor  142 , a third sensor  143 , and so on. 
         [0056]    The shutter  121  controls image light incident on the imaging device  122 . 
         [0057]    The imaging device  122  is disposed at a position where the image light transmitted through the lens group  111  is imaged, and thus the imaging device  122  converts an imaged image to an electronic signal. 
         [0058]    The imaging device  122  may include a charge couple device (CCD). In embodiments, the imaging device  122  may include a complementary metal oxide semiconductor (CMOS), or an image sensor. 
         [0059]    The CDS circuit  123  is a circuit including a CDS circuit integrated with an amplifier. The CDS circuit is a kind of a sampling circuit removing noise of an electronic signal output from the imaging device  122 , and the amplifier removes the noise and then amplifies the electronic signal. In the present embodiment, the circuit including the CDS circuit and the amplifier constitutes the CDS circuit  123 . In embodiments, the CDS circuit and the amplifier may be separately configured by circuits. 
         [0060]    The A/D converter  124  converts an analog electronic signal generated by the imaging device  122  to a digital signal. 
         [0061]    The image input controller  125  transfers a digital imaging signal to the controller  131 . 
         [0062]    The white balance adjuster  126  is a circuit adjusting a white balance value by using photographed image data output from the imaging device  122 . 
         [0063]    The white balance adjuster  126  may be connected via a separate circuit to the controller  131 . In embodiments, the white balance adjuster  126  may be integrated in the controller  131 . 
         [0064]    In addition, the white balance adjuster  126  may be formed as hardware. In embodiments, the white balance adjuster  126  may be formed as software. 
         [0065]    The compression processing circuit  127  performs compression-processing in which the photographed image data is compressed in an appropriate format that may be reversible or irreversible. Examples of the appropriate format may include a joint photographic experts group (JPEG) type or a JPEG 2000 type. 
         [0066]    The display unit  129  includes a liquid crystal display (LCD) device, and displays a live view prior to photographing, various images for setting the photographing apparatus  100 , a photographed image, and so on. The photographed image data or various pieces of information of the photographing apparatus  100  are displayed on the display unit  129  via the display-unit driver  128 . 
         [0067]    In the present embodiment, the display unit  129  includes an LCD device. In an embodiment, the display unit  129  may include an organic light emitting diode (OLED), a field emission display (FED) device, or the like. 
         [0068]    The timing generator  130  outputs a timing signal that is input to the imaging device  122 . A shutter velocity is determined according to the timing signal output from the timing generator  130 . Driving of the imaging device  122  is controlled by the timing signal output from the timing generator  130 , and the image light of the subject is incident on the imaging device  122  during the driving of the imaging device  122 . Thus, the electronic signal corresponding to the photographed image data is generated. 
         [0069]    The controller  131  performs command from a signal system such as the first driving unit  112   a,  the imaging device  122 , the CDS circuit  123  and the rotating unit  137  of the lens unit  110 , and performs a manipulation command from a manipulation unit such as the input unit  132 . In the present embodiment, the photographing apparatus  100  includes a single controller  131 . In embodiments, the photographing apparatus  100  may include a plurality of controllers. 
         [0070]    The controller  131  receives data regarding a shake of the photographing apparatus  100  from the first sensor  141  ( FIG. 2 ), the second sensor  142 , and the third sensor  143 , and generates a control signal for correcting the shake of the photographing apparatus  100 . Then, the controller  131  controls the first driving unit  112   a  and a second driving unit  137   b.    
         [0071]    In addition, the controller  131  performs an image processing function. That is, the controller  131  processes the photographed image data output from the imaging device  122 . For example, the controller  131  performs gamma correction of the photographed image data output from the imaging device. 
         [0072]    Gamma correction refers to encoding information to agree with nonlinearity of the human sight. That is, since the human sight responds nonlinearly to brightness according to Weber&#39;s law, when brightness is linearly recorded in photographed image data with a limited bit depth, posterization occurs. Thus, in order to obtain the good image quality with the limited bit depth, the photographed image data is encoded using a nonlinear function, which is referred to as gamma correction. 
         [0073]    The controller  131  performs gamma correction by using a gamma curve with respect to an image signal input to the controller  131 , and then outputs the image signal. For example, the controller  131  calibrates an input brightness level of 12 bits image signal and then outputs the 8 bits of brightness level. 
         [0074]    The input unit  132  also operates as a photographing mode selecting unit. In addition, members for manipulating the photographing apparatus  100  or performing various settings during photographing are disposed in the input unit  132 . The members disposed in the input unit  132  includes a power button, a cross key and a selection button, which are used to select a photographing mode and a photographing drive mode and to set an effect parameter, and a shutter button for initiating manipulation of photographing. 
         [0075]    The shape and type of the input unit  132  may not be particularly limited. The input unit  132  may be embodied as a button-shaped device or a touch screen device linked to the display unit  129 . 
         [0076]    The memory  133  is an example of an image storage unit, and temporarily stores photographed image data or data required to operate the photographing apparatus  100 . The memory  133  has a capacity for storing a plurality of images. An image is written to/read from the memory  133  under the control of the image input controller  125 . 
         [0077]    The VRAM  134  maintains contents displayed on the display unit  129 . The resolution and the maximum number of colors of the display unit  129  vary with the capacity of the VRAM  134 . 
         [0078]    The recording medium  136  is an example of an image recording unit, and records the photographed image. The photographed image is input to/output from the recording medium  136  under the control of the medium controller  135 . The recording medium  136  may be a secure digital (SD) card and a multimedia card (MMC) for storing data. 
         [0079]    The rotating unit  137  rotates the imaging device  122 . As illustrated in  FIG. 6 , the rotating unit  137  is disposed in the main body  120 . 
         [0080]    As illustrated in  FIG. 7 , the rotating unit  137  includes a frame  137   a,  the second driving unit  137   b,  a rotation guiding unit  137   c,  and a link unit  137   d.    
         [0081]      FIG. 7  is a perspective view of an example of the rotating unit  137  of the photographing apparatus  100 . 
         [0082]    A barrel  137   a _ 1  including the shutter  121  disposed therein is disposed in the frame  137   a.  A rotation hole  137   a _ 2  is formed in the center of the frame  137   a.    
         [0083]    The second driving unit  137   b  includes an ultrasonic motor, and is mounted in the frame  137   a.  An operating unit  137   b _ 1  disposed in the second driving unit  137   b  moves linearly. 
         [0084]    In the present embodiment, the second driving unit  137   b  includes an ultrasonic motor. In embodiments, the second driving unit  137   b  may include a voice coil motor, or alternatively, may include a step motor. 
         [0085]    The rotate guiding unit  137   c  has a cylindrical shape, and is configured so that the circumference of the rotate guiding unit  137   c  is inserted in the rotation hole  137   a _ 2  so as to be capable of rotating. In addition, the imaging device  122  is mounted on the rotation guiding unit  137   c.  A rotation connection unit  137   c _ 1  is formed on a portion of the rotation guiding unit  137   c.    
         [0086]    The link unit  137   d  receives power from the operating unit  137   b _ 1  of the second driving unit  137   b,  and then rotates the rotation guiding unit  137   c.  To achieve this, a first portion  137   d _ 1  of the link unit  137   d  is connected to the rotation connection unit  137   c _ 1 , and a second portion  137   d _ 2  is connected to the operating unit  137   b _ 1  of the second driving unit  137   b.  Thus, the ink unit  137   d  is moved by the motion of the operating unit  137   b _ 1 . 
         [0087]    Referring to  FIG. 8 , a structure in which the first portion  137   d _ 1  of the link unit  137   d  is connected to the rotation connection unit  137   c _ 1  will be described. 
         [0088]      FIG. 8  is an exploded perspective view illustrating an example of a method of connecting the link unit  137   d  to the rotation connection unit  137   c _ 1 . 
         [0089]    A slot  137   d _ 3  is formed in the first portion  137   d _ 1  of the link unit  137   d,  and a fixing hole  137   c _ 12  is formed in the rotation connection unit  137   c _ 1 . 
         [0090]    A connection pin  137   e  is inserted into the slot  137   d _ 3  to be mounted in the fixing hole  137   c _ 12 , and thus the rotation guiding unit  137   c  can be rotated by the linear motion of the link unit  137   d.  When the link unit  137   d  moves, the connection pin  137   e  comes in contact with an inner wall of the slot  137   d _ 3  to slide along the inner wall of the slot  137   d _ 3 . Thus, a linear motion of the link unit  137   d  is converted to a rotary motion of the rotation guiding unit  137   c.    
         [0091]    In the rotating unit  137 , the rotation guiding unit  137   c  rotates by a limited angle due to structural characteristics of the rotating unit  137 . Thus, when a photographing apparatus is designed, a rotating angle for shake correction is determined, and then a displacement of the linear motion of the link unit  137   d  and the length of the slot  137   d _ 3  is considered in order to obtain the rotating angle for shake correction. 
         [0092]    The linear motion of the operating unit  137   b _ 1  of the second driving unit  137   b  is converted to a rotation motion of the rotation guiding unit  137   c.  In embodiments, the detailed construction of the rotating unit  137  is not particularly limited as long as the rotating unit  137  can rotate the imaging device  122 . For example, in the rotating unit  137 , a step motor having a rotary axis can be used as the second driving unit  137   b,  a power transfer device such as a gear device or a belt device is used as the rotary axis, and thus the rotation guiding unit  137   c  on which the imaging device  122  is disposed can be rotated. 
         [0093]    The first sensor  141  ( FIG. 2 ), the second sensor  142 , and the third sensor  143  measure the shake degree of the photographing apparatus  100 . To achieve this, each of the first sensor  141 , the second sensor  142 , and the third sensor  143  may include an acceleration sensor, a gyro sensor, or the like. 
         [0094]    The kind and operating principle of each of the first sensor  141 , the second sensor  142  and the third sensor  143  are not particularly limited as long as the first sensor  141 , the second sensor  142  and the third sensor  143  can measure the motion of the photographing apparatus  100 . For example, a displacement sensor, a velocity sensor, an angular velocity sensor or angular acceleration sensor may be used as each of the first sensor  141 , the second sensor  142  and the third sensor  143 . Preferably, a gyro sensor may be used as each of the first sensor  141 , the second sensor  142  and the third sensor  143  in order to measure the rotation shake of the photographing apparatus  100 . 
         [0095]    According to the present embodiment, three sensors, that is, the first sensor  141  ( FIG. 2 ), the second sensor  142  and the third sensor  143  are used, but the present invention is not limited thereto. That is, the number of sensors is not particularly limited. For example, a single sensor may be used as long as the single sensor can detect the shake of the photographing apparatus  100  in all directions. In embodiments, at least four sensors may be used. 
         [0096]    Hereinafter, a shake correction operation of the photographing apparatus  100  will be described in detail. 
         [0097]    The photographing apparatus  100  may shake due to a user&#39;s hand shake, etc., during photographing. At this time, the shake may be analyzed in six directions. 
         [0098]    That is, as illustrated in  FIG. 1 , the shake of the photographing apparatus  100  can be analyzed in a translation motion based on a XYZ fixed coordinate system, and a rotation motion based on x, y and z axes of an xyz moving coordinate system having the origin at the photographing apparatus  100 . The rotation motion having may be more important than the translation motion in terms of the hand shake. The rotation motion can be expressed by Pitch, that is, rotation about the x-axis, Yaw, that is rotation about the y-axis, and Roll, that is, rotation about the z-axis. 
         [0099]    Thus, the photographing apparatus  100  uses a three-axis shake correction method in order to correct a shake. That is, the motion of the shake correction lens  111   a  of the lens unit  110  is controlled, and simultaneously the rotation motion of the imaging device  122  disposed in the main body  120  is controlled. In other words, the former is a two-axis shake correction method, and the latter is a one-axis shake correction method. Thus, overall, the photographing apparatus  100  uses the three-axis shake correction method. 
         [0100]    In a shake correction mode of the photographing apparatus  100 , the two-axis shake correction method of controlling the motion of the shake correction lens  111   a  and the one-axis shake correction method of controlling the rotation motion of the imaging device  122  may be simultaneously performed. Hereinafter, for convenience of description, the two-axis shake correction method of controlling the motion of the shake correction lens  111   a  will be described, and then the one-axis shake correction method of controlling the rotation motion of the imaging device  122  will be described. 
         [0101]    With reference to  FIGS. 4 and 5 , the two-axis shake correction method of controlling the motion of the shake correction lens  111   a  will now be described.  FIGS. 4 and 5  illustrate an example where the shake correction lens  111   a  is moved in order to correct a shake of the photographing apparatus  100 . 
         [0102]    In a shake correction mode of the photographing apparatus  100 , the first sensor  141  and the second sensor  142  measure the shake of the photographing apparatus  100 , and transmit the measurement result to the controller  131 . At this time, the first sensor  141  and the second sensor  142  primarily measure Pitch and Yaw. 
         [0103]    The controller  131  calculates data received from the first sensor  141  and the second sensor  142 , and then operates the first driving unit  112   a.  The first driving unit  112   a  may move the first actuator  112   a _ 1  and the second actuator  112   a _ 2  in a direction so as to correct the shake of the photographing apparatus  100 . In this example, the first driving unit  112   a  moves the shake correction lens  111   a  in a perpendicular direction with respect to a z-axis direction that is an optical axis direction. That is, the first driving unit  112   a  moves the shake correction lens  111   a  on the x-y plane. 
         [0104]    For example, as illustrated in  FIG. 4 , if the shake correction lens  111   a  is intended to be moved in a positive direction of the x-axis in order to correct the shake of the photographing apparatus  100 , the controller  131  operates the operator  112   a _ 12  of the first actuator  112   a _ 1  so as to move the shake correction lens  111   a  in a positive direction of the x-axis. 
         [0105]    In addition, for example, as illustrated in  FIG. 5 , if the shake correction lens  111   a  is intended to be moved in a positive direction of the y-axis in order to correct the shake of the photographing apparatus  100 , the controller  131  operates the operator  112   a _ 21  of the second actuator  112   a _ 2  so as to move the shake correction lens  111   a  in a positive direction of the y-axis. 
         [0106]    In the above example, the example where the shake correction lens  111   a  is moved in the positive directions of the x-axis and y-axis in order to correct the shake of the photographing apparatus  100  has been described. Also, the shake correction lens  111   a  is moved in a negative direction of the x-axis and y-axis in the same manner as in the above example except that the shake correction lens  111   a  is moved in an opposite direction to in the above example. 
         [0107]    In the above example, the movement of the shake correction lens  111   a  in the x-axis direction and the y-axis direction to correct the shake of the photographing apparatus  100  have been separately described. However, when the photographing apparatus  100  is shaken, the shake correction lens  111   a  may be simultaneously moved in the x-axis and y-axis directions. In this case, the controller  131  may simultaneous control both the first actuator  112   a _ 1  and the second actuator  112   a _ 2 . 
         [0108]    When the shake correction lens  111   a  is moved from an initial position, the first elastic member  112   b  and the second elastic member  112   c  are pressed or pulled to store or release elastic potential energy. Then, when the shake correction lens  111   a  is not shaken, the shake correction lens  111   a  is restored to the initial position while the elastic potential energy stored in the first elastic member  112   b  and the second elastic member  112   c  is released. 
         [0109]    With respect to  FIGS. 9 through 11 , the one-axis shake correction method of controlling the rotary motion of the imaging device  122  will now be described. 
         [0110]      FIGS. 9 through 11  illustrate an example where the imaging device  122  is moved in order to correct the shake of the photographing apparatus  100 . 
         [0111]    First, in a shake correction mode of the photographing apparatus  100 , when the photographing apparatus  100  is not shaken, the controller  131  may not operate the second driving unit  137   b,  and the imaging device  122  does not rotate, as illustrated in  FIG. 9 . 
         [0112]    When the photographing apparatus  100  is shaken, the third sensor  143  measures the rotation shake of the photographing apparatus  100 , and then transmits the measurement result to the controller  131 . At this time, the third sensor  143  primarily measures Roll. 
         [0113]    The controller  131  calculates data received from the third sensor  143 , and then operates the second driving unit  137   b  in a direction so as to correct the shake of the photographing apparatus  100 . 
         [0114]    For example, as illustrated in  FIG. 10 , if the imaging device  122  is intended to be rotated counterclockwise in order to correct the shake of the photographing apparatus  100 , the controller  131  controls and moves the operating unit  137   b _ 1  of the second driving unit  137   b  in a positive direction of the x-axis. When the operating unit  137   b _ 1  is moved in the positive direction of the x-axis, the link unit  137   d  is also moved in the positive direction of the x-axis. Thus, the connection pin  137   e  slides along an inner wall of the slot  137   d _ 3 , and the rotation guiding unit  137   c  rotates counterclockwise. That is, the rotation guiding unit  137   c  is bounded by the rotation hole  137   a _ 2  so that the rotation guiding unit  137   c  rotates while being inserted into the rotation hole  137   a _ 2 . Thus, the rotation guiding unit  137   c  rotates counterclockwise due to a force applied by the connection pin  137   e.  When the rotation guiding unit  137   c  rotates counterclockwise, the imaging device  122  disposed on the rotate guiding unit  137   c  also rotates counterclockwise, thereby correcting the shake. 
         [0115]    In addition, for example, as illustrated in  FIG. 11 , if the imaging device  122  is intended to be rotated clockwise in order to correct the shake of the photographing apparatus  100 , the controller  131  controls and moves the operating unit  137   b _ 1  of the second driving unit  137   b  in a negative direction of the x-axis. When the operating unit  137   b _ 1  moves in the negative direction of the x-axis, the link unit  137   d  also moves in the negative direction of the x-axis. Thus, the connection pin  137   e  slides along the inner wall of the slot  137   d _ 3 , and the rotation guiding unit  137   c  rotates clockwise. That is, the rotation guiding unit  137   c  is bounded by the rotation hole  137   a _ 2  so that the rotation guiding unit  137   c  rotates while being inserted into the rotation hole  137   a _ 2 . Thus, the rotation guiding unit  137   c  rotates clockwise due to a force applied by the connection pin  137   e.  When the rotate guiding unit  137   c  rotates clockwise, the imaging device  122  disposed on the rotation guiding unit  137   c  also rotates clockwise, thereby correcting the shake. 
         [0116]    As described above, the photographing apparatus  100  uses a three-axis shake correction method. The method may simultaneously control the motion of the shake correction lens  111   a  and the rotation motion of the imaging device  122  in order to correct the shake. The shake correction can be performed with high accuracy. 
         [0117]    The photographing apparatus  100  is a single-lens reflex digital camera. In embodiments, the photographing apparatus  100  may be a compact camera, a video camcorder, or a film camera. 
         [0118]    The various illustrative logics, logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. 
         [0119]    Further, the steps and/or actions of a method or algorithm described in connection with the aspects disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium may be coupled to the processor, such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. Further, in some aspects, the processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal. Additionally, in some aspects, the steps and/or actions of a method or algorithm may reside as one or any combination or set of instructions on a machine readable medium and/or computer readable medium. 
         [0120]    While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by one of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.