Patent Publication Number: US-11032472-B2

Title: Image-capturing device and image-capturing method

Description:
This application claims the benefit of Taiwan Patent Application Serial No. 105100170, filed Jan. 5, 2016, the subject matter of which is incorporated herein by reference. 
     BACKGROUND OF INVENTION 
     1. Field of the Invention 
     The invention relates to an image-capturing system, and more particularly to an image-capturing device and an image-capturing method that applies a rotating unit to drive a light-reflecting member to undergo a limited pivotal motion, so as to capture at least two exterior light images for being integrated into a single combined image without shifting an image-capturing unit and a lens module. 
     2. Description of the Prior Art 
     In the art, when an optical image-capturing device (such as, but not limited to, a digital camera, a video recorder, a smart phone with photo-capturing functions and the like) is applied to capture panoramic or wide-ranged pictures, the user usually needs to hand hold the whole optical image-capturing device firmly and circle around by having his/her own body as the center for circling and photo-capturing. While he/she rotates, a series of photos can be produced by the optical image-capturing device. Then, these in-series photos can be integrated to form a combined photo with panoramic or wide-ranged visions. Obviously, the aforesaid manner to obtain a panoramic or wide-ranged picture by rotating the human body as well as the optical image-capturing device is cumbersome and has a stability problem. Generally, the resulted panoramic or wide-ranged picture meets a quality problem. Though there is already in the marketplace an auto-rotating platform useful for the optical image-capturing device to capture serial photos for further producing a panoramic or wide-ranged picture with better and stable quality, yet the auto-rotating platform is anyway an additional expense and may cause a notorious problem in portability. Further, all the aforesaid techniques for obtaining the panoramic or wide-ranged picture require the whole optical image-capturing device to rotate for photo capturing. Such a rotating operation implies that the internal lens set and imaging sensors of the optical image-capturing device shall be synchronously rotated simultaneously so as able to capture meaningful images with different photo-ing areas for an expected combined picture. Definitely, the inconvenience is obvious, and a further improvement thereupon is necessary. 
     SUMMARY OF THE INVENTION 
     Accordingly, it is the primary object of the present invention to provide an image-capturing device and an image-capturing method that can apply a rotating unit to drive a light-reflecting member to undergo a limited pivotal motion, such that at least two exterior light images for being integrated into a single combined image without shifting an image-capturing unit and a lens module can be obtained. 
     In the present invention, the image-capturing method is applicable to an image-capturing device. The image-capturing device comprises: 
     a light-reflecting member for redirecting a light image in a foreign photo-ing area to an optical path; 
     an image-capturing unit, located on the optical path to receive the light image and further to transform the light image into a corresponding electric signal readable to a control unit; 
     a lens module, located on the optical path at a position between the light-reflecting member and the image-capturing unit, being to image the light image from the light-reflecting member onto the image-capturing unit; 
     a rotating unit, engaged with the light-reflecting member to drive the light-reflecting member to undergo a limited pivotal motion about at least an axial direction and so as to allow at least two foreign light images at different photo-ing areas to be redirected to the optical path  60  by the light-reflecting member and then imaged onto the image-capturing unit, such thon the image-capturing unit is able to capture the at least two foreign light images in the different photo-ing areas without moving the image-capturing unit and the lens module; and 
     the control unit, electrically coupled with the image-capturing unit and the rotating unit, being to control the rotating unit and the image-capturing unit and to integrate the at least two light images imaged on the image-capturing unit to further produce a combined image. 
     The image-capturing method comprises: 
     Step A: the control unit controlling the rotating unit to drive the light-reflecting member to rotate to a first position about the first axial direction and to control the image-capturing unit to capture a first light image; 
     Step B: without moving the image-capturing unit and the lens module, the control unit controlling the rotating unit to drive the light-reflecting member to rotate to a second position about the first axial direction and to control the image-capturing unit to capture a second light image; wherein the first light image and the second light image are partly overlapped to have a duplicated image; and 
     Step C: the control unit basing on the duplicated image of the first light image and the second light image to integrate the first light image and the second light image into a single combined image; wherein the first light image and the second light image have the same length, width and pixel value, and at least one of the length, width and pixel value of the combined image is larger than that of the first light image. 
     In one embodiment of the present invention, the light-reflecting member is disposed at a twin-axial rotating element, the twin-axial rotating element is able to undergo the limited pivotal motion at least about a first axial direction and a second axial direction perpendicular to the first axial direction, and the rotating unit connected with the twin-axial rotating element is to drive the twin-axial rotating element to undergo the limited pivotal motion about the first axial direction and the second axial direction. 
     In one embodiment of the present invention, when the control unit controls the rotating unit to drive the twin-axial rotating element to undergo the limited pivotal motion through at least a first position, a second position and a third position thereof about the first axial direction, the control unit controls simultaneously the image-capturing unit to capture a first light image, a second light image and a third light image corresponding to the first position, the second position and the third position of the twin-axial rotating element, respectively; 
     the first light image is an image formed on the image-capturing unit corresponding to a foreign light image in the first photo-ing area while the twin-axial rotating element is at the first position, the second light image is an image formed on the image-capturing unit corresponding to a foreign light image in the second photo-ing area while the twin-axial rotating element is at the second position, and the third light image is an image formed on the image-capturing unit corresponding to a foreign light image in the third photo-ing area while the twin-axial rotating element is at the third position; and, 
     the first photo-ing area and the second photo-ing area are partly overlapped so that a duplicated image is formed partly to the first light image and the second light image, the first photo-ing area and the third photo-ing area are also partly overlapped so that another duplicated image is formed partly to the first light image and the third light image, and the control unit bases on the two duplicated images among the first light image, the second light image and the third light image to integrate and produce the single combined image. 
     In one embodiment of the present invention, when the control unit controls the rotating unit to drive the twin-axial rotating element to undergo the limited pivotal motion through at least a fourth position, a fifth position and a sixth position thereof about the second axial direction, the control unit controls simultaneously the image-capturing unit to capture a fourth light image, a fifth light image and a sixth light image corresponding to the fourth position, the fifth position and the sixth position of the twin-axial rotating element, respectively; 
     the fourth light image is an image formed on the image-capturing unit corresponding to a foreign light image in the fourth photo-ing area while the twin-axial rotating element is at the fourth position, the fifth light image is an image formed on the image-capturing unit corresponding to a foreign light image in the fifth photo-ing area while the twin-axial rotating element is at the fifth position, and the sixth light image is an image formed on the image-capturing unit corresponding to a foreign light image in the sixth photo-ing area while the twin-axial rotating element is at the sixth position; 
     the fourth photo-ing area and the fifth photo-ing area are partly overlapped so that a duplicated image is formed partly to the fourth light image and the fifth light image, the fourth photo-ing area and the sixth photo-ing area are also partly overlapped so that another duplicated image is formed partly to the fourth light image and the sixth light image, and the control unit bases on the two duplicated images among the fourth light image, the fifth light image and the sixth light image to integrate and produce the single combined image; and, 
     the fourth light image, the fifth light image and the sixth light image have the same length, width and pixel value, and at least one of the length, width and pixel value of the combined image is larger than that of the fourth light image. 
     In one embodiment of the present invention, when the control unit controls the rotating unit to drive the twin-axial rotating element to undergo a twin-axial pivotal motion through at least a seventh position, an eighth position, a ninth position, a tenth position and an eleventh position thereof about the first axial direction and the second axial direction, the control unit controls simultaneously the image-capturing unit to capture a seventh light image, an eighth light image, a ninth light image, a tenth light image and an eleventh light image corresponding to the seventh position, the eighth position, the ninth position, the tenth position and the eleventh position of the twin-axial rotating element, respectively, the eighth, ninth, tenth and eleventh light images are individually partly overlapped with the seventh light image, and the control unit bases on duplicated images among the seventh, eighth, ninth, tenth and eleventh light images to integrate the single combined image; wherein the seventh, eighth, ninth, tenth and eleventh light images all have the same length, width and pixel value, and the length, width and pixel value of the combined image are all larger than those of the seventh light image. 
     In one embodiment of the present invention, the image-capturing device further includes a switch mechanism engaged with the rotating unit, wherein the switch mechanism drives the rotating unit to rotate about a third axial direction so as to drive simultaneously the rotating unit associated with the light-reflecting member to undergo a rotation about the third axial direction; wherein the first axial direction is perpendicular to the second axial direction, the second axial direction is perpendicular to the third axial direction, and the first axial direction intersects the third axial direction by a 45-degree angle. 
     In one embodiment of the present invention, the twin-axial rotating element is formed as a thin spring plate including an outer frame portion, a middle frame portion and an inner plate portion; the inner plate portion having a plane facing the optical path, the first axial direction and the second axial direction being defined on this plane; the middle frame portion circling around a periphery of the inner plate portion, at least one first through trench being formed between the middle frame portion and the inner plate portion for separating the middle frame portion and the inner plate portion, two first connection ribs aligned in the first axial direction being provided between the middle frame portion and the inner plate portion for connecting the middle frame portion and the inner plate portion; the outer frame portion circling around a periphery of the middle frame portion, at least one second through trench being formed between the outer frame portion and the middle frame portion for separating the outer frame portion and the middle frame portion, two second connection ribs aligned in the second axial direction being provided between the outer frame portion and the middle frame portion for connecting the outer frame portion and the middle frame portion. 
     In one embodiment of the present invention, the rotating unit is an electromagnetic driving module including at least an inner carrier structure, an outer carrier structure, at least one first magnet, at least one second magnet, at least one first coil and at least one second coil; 
     the inner carrier structure is engaged on a bottom of the inner plate portion so as to co-move with the inner plate portion, and the outer carrier structure is fixed with a bottom of the outer frame portion; 
     one of the first magnet and the first coil is mounted at the inner carrier structure while another thereof is mounted at the outer carrier structure, the first coil being energized to produce a corresponding electromagnetic force to push the first magnet and the inner plate portion on the inner carrier structure to undergo the pivotal motion about the first axial direction; 
     one of the second magnet and the second coil is mounted at the inner carrier structure while another thereof is mounted at the outer carrier structure, the second coil being energized to produce a corresponding electromagnetic force to push the second magnet and the inner plate portion on the inner carrier structure to undergo the pivotal motion about the second axial direction; 
     t the inner carrier structure is a wedge-shape frame structure having a rectangular first contact portion connecting the inner plate portion and four first side surfaces extending from corresponding lateral sides of the rectangular first contact portion in respective directions away of the inner plate portion, two of these four first side surfaces being shaped to two right triangles standing on opposing lateral sides of the rectangular first contact portion in a parallel manner, another two of the four first side surfaces being shaped to two rectangles standing on another two opposing lateral sides of the rectangular first contact portion in a manner of connecting at top sides thereof in a right angle, each of the first side surfaces having an individual first accommodation base; 
     the outer carrier structure is a wedge-shape frame structure having a rectangular second contact portion connecting the outer frame portion and four second side surfaces extending from corresponding lateral sides of the rectangular second contact portion in respective directions away of the outer frame portion, two of these four second side surfaces being shaped to two right triangles standing on opposing lateral sides of the rectangular second contact portion in a parallel manner, another two of the four second side surfaces being shaped to two rectangles standing on another two opposing lateral sides of the rectangular second contact portion in a manner of connecting at top sides thereof in a right angle, each of the second side surfaces having an individual second accommodation base; 
     the first magnet is mounted into the first accommodation base of the triangular first side surface of the inner carrier structure, and the first coil is mounted into the second accommodation base of the triangular second lateral side surface of the outer carrier structure via a first circuit board; and, 
     the second magnet is mounted into the first accommodation base of the rectangular first side surface of the inner carrier structure, and the second coil is mounted into the second accommodation base of the rectangular second lateral side of the outer carrier structure via a second circuit board. 
     All these objects are achieved by the image-capturing device and the image-capturing method described below. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will now be specified with reference to its preferred embodiment illustrated in the drawings, in which: 
         FIG. 1  is a schematic block view of a preferred image-capturing device in accordance with the present invention; 
         FIG. 2  is another schematic block view of the control unit of  FIG. 1 ; 
         FIG. 3  demonstrates schematically a limited pivotal motion of the light-reflecting member driven by the twin-axial rotating element of the image-capturing device in accordance with the present invention, clockwise or counter clockwise about the first axial direction (R 1 ); 
         FIG. 4A  shows three consecutive light images captured by image-capturing unit of the image-capturing device in accordance with the present invention, in which these three light images are captured at different photo-ing areas by rotating the light-reflecting member to three corresponding positions during the pivotal motion of  FIG. 3 ; 
         FIG. 4B  shows a schematic view of overlapping the three light images of  FIG. 4A ; 
         FIG. 4C  shows schematically a single combined image after the overlapping of  FIG. 4B ; 
         FIG. 5  demonstrates schematically a limited pivotal motion of the light-reflecting member driven by the twin-axial rotating element of the image-capturing device in accordance with the present invention, clockwise or counter clockwise about the second axial direction (R 2 ); 
         FIG. 6A  shows three consecutive light images captured by image-capturing unit of the image-capturing device in accordance with the present invention, in which these three light images are captured at different photo-ing areas by rotating the light-reflecting member to three corresponding positions during the pivotal motion of  FIG. 5 ; 
         FIG. 6B  shows a schematic view of overlapping the three light images of  FIG. 6A ; 
         FIG. 6C  shows schematically a single combined image after the overlapping of  FIG. 6B ; 
         FIG. 7  demonstrates schematically a limited twin-axial pivotal motion of the light-reflecting member driven by the twin-axial rotating element of the image-capturing device in accordance with the present invention, clockwise or counter clockwise about a twin-axial direction made up by the first axial direction (R 1 ) and the second axial direction (R 2 ); 
         FIG. 8A  shows five consecutive light images captured by image-capturing unit of the image-capturing device in accordance with the present invention, in which these five light images are captured at different photo-ing areas by rotating the light-reflecting member to five corresponding positions; 
         FIG. 8B  shows schematically a single combined image after integrating the five light images of  FIG. 8A ; 
         FIG. 9  shows a combined image formed by overlapping a plurality of light images captured at different photo-ing areas in accordance with the image-capturing method of the present invention; 
         FIG. 10  shows schematically a view of an image-capturing device having a switch mechanism in accordance with the present invention; 
         FIG. 11  is a schematic view of a panoramic combined image captured, in a 360° manner, by the image-capturing method in accordance with the present invention; 
         FIG. 12A  shows schematically an analogous 3D image captured by the image-capturing method in accordance with the present invention; 
         FIG. 12B  shows a typical example for  FIG. 12A ; 
         FIG. 13  demonstrates schematically the mounting of the twin-axial rotating element and the rotating unit on the image-capturing device of the present invention; 
         FIG. 14A  is a schematic perspective view of the twin-axial rotating element and the rotating unit after the inner carrier structure and the magnets are assembled together, in a bottom-view direction; 
         FIG. 14B  is another view of  FIG. 14A , in a top-view direction; 
         FIG. 15  is a schematic lateral side view of  FIG. 13 ; 
         FIG. 16  is a schematic exploded view showing a position relationship among the magnets, the coils, the circuit boards and the magnet-detecting members of the rotating unit in accordance with the present invention; 
         FIG. 17  is a schematic drawing showing an example of image-capturing device of the invention having an electric-magnetic driven rotating unit comprising an arc magnet and an arc coil; 
         FIG. 18  is an exploded perspective view of an embodiment of the rotating unit comprising an arc magnet and an arc coil of the image-capturing device of the invention; 
         FIG. 19  is a top assembling view of the rotating unit of the invention as shown in  FIG. 18 ; and 
         FIG. 20  is an A-A sectional view of  FIG. 19 . 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The invention disclosed herein is directed to an image-capturing device and an image-capturing method. In the following description, numerous details are set forth in order to provide a thorough understanding of the present invention. It will be appreciated by one skilled in the art that variations of these specific details are possible while still achieving the results of the present invention. In other instance, well-known components are not described in detail in order not to unnecessarily obscure the present invention. 
     In the present invention, the image-capturing device and the image-capturing method are mainly to apply a light-reflecting member to redirect a foreign light image in a photo-ing area to an optical path and then to apply a lens module on the optical path to image the light image onto an image-capturing unit. In addition, a rotating unit is particularly applied to drive the light-reflecting member to undergo limited pivotal motions so as allow the image-capturing unit and the lens module to capture, without any shifting, at least two foreign light images in different photo-ing areas for further being integrated into a single combined image. Hence, when a user applies the image-capturing device of the present invention to capture a panoramic or wide-ranged picture, no displacement or rotation shall be imposed on the whole optical image-capturing device. Actually, he/she needs simply to hold his/her current position, to face the same direction, and to push the shutter button, then the image-capturing device of the present invention would automatically capture a plurality of foreign light images in different photo-ing areas so as further to integrate or overlap these light images into form a single combined image, such that the wide-ranged or panoramic picture can be obtained. 
     Refer now to  FIG. 1  and  FIG. 2 ; where  FIG. 1  is a schematic block view of a preferred image-capturing device in accordance with the present invention, and  FIG. 2  is another schematic block view of the control unit of  FIG. 1 . 
     In the present invention, the image-capturing device  6  can be a digital camera, a video recorder, a smart phone with image-capturing modules, a tablet computer, a notebook computer or the like portable electronic device. The image-capturing device  6  includes a housing  61 , at least a light-introducing window  62 , a light-reflecting member  63 , a rotating unit  64 , a lens module  65 , a lens-driving unit  66 , an image-capturing unit  67 , a control unit  68 , a display unit  69 , a memory unit  70 , a power unit  71 , a human-machine unit  72 , and an I/O unit  73 . In the embodiment shown in  FIG. 1  and  FIG. 1 , the rotating unit  64 , the lens-driving unit  66 , the image-capturing unit  67 , the display unit  69 , the memory unit  70 , the power unit  71 , the human-machine unit  72 , and the I/O unit  73  are all electrically coupled with the control unit  68 . 
     The aforesaid elements of the image-capturing device  6  are accommodated inside the housing  61 . On the housing  61 , at least one light-introducing window  62  is constructed so as to allow foreign light images to enter therethrough the housing  61 . The light-reflecting member  63  is disposed at a place corresponding to the light-introducing window  62 , so that a light image from a foreign photo-ing area  81  can penetrate the light-introducing window  62  and then reach the light-reflecting member  63 . The light image is then redirected to a optical path  60  by the light-reflecting member  63 . In this embodiment, the light-reflecting member  63  can be a mirror or a prism. The lens module  65  is consisted of at least one optical lens. The image-capturing unit  67  includes image sensors and related circuits. The lens module  65  and the image-capturing unit  67  are both located on the optical path  60 , and particularly the lens module  65  is disposed between the light-reflecting member  63  and the image-capturing unit  67 . More precisely, the optical path  60  is defined by the lens module  65 , such that the redirected light image from the light-reflecting member  63  can be focused at the lens module  65  and then imaged on a light-receiving surface of the image-capturing unit  67 . The image-capturing unit  67  receives the light image and then transforms the light image into an electric signal readable for the control unit  68 . 
     The rotating unit  64  is engaged with the light-reflecting member  63  to drive the light-reflecting member  63  to undergo a limited pivotal motion about a predetermined axial direction selected from the group of the axial directions defined in this disclosure. Thereupon, at least two foreign light images at different photo-ing areas ( 81 ,  81   a ,  81   b ,  81   c  and  81   d  for example) can be redirected to the optical path  60  by the light-reflecting member  63  and then imaged onto the image-capturing unit  67 . Thus, in the present invention, the image-capturing unit  67  can capture at least two foreign light images at different photo-ing areas  81 ,  81   a ,  81   b ,  81   c  and  81   d  without any displacement and rotation on the image-capturing unit  67 , the lens module  65  and even the whole image-capturing device  6 . Since the control unit  68  is electrically coupled with and thus controls the image-capturing unit  67  and the rotating unit  64 , so the control unit  68  would perform an image-integrating operation upon the at least two light images captured by the image-capturing unit  67  so as to produce a combined image of the at least two light images. 
     In this embodiment, the light-reflecting member  63  is mounted on the twin-axial rotating element  10  in an 45-degree inclination angle at a position between the light-introducing window  62  and the lens module  65 , such that the light image enters horizontally the housing  61  through the light-introducing window  62  can be redirected downward to enter the lens module  65  by the light-reflecting member  63 . The twin-axial rotating element  10  of the present invention can perform limited pivotal motions at least about a first axial direction (R 1 ) and a second axial direction (R 2 ) perpendicular to the first axial direction (R 1 ). The rotating unit  64  connected with the twin-axial rotating element  10  is to drive the twin-axial rotating element  10  to undergo the limited pivotal motions about the first axial direction (R 1 ) and the second axial direction (R 2 ) so as thereby to further drive the light-reflecting member  63  to undergo the corresponding limited pivotal motions about the same first axial direction (R 1 ) and the second axial direction (R 2 ). In this embodiment, the first axial direction (R 1 ) is perpendicular to the second axial direction (R 2 ), the first axial direction (R 1 ) intersects the optical path  60  (i.e. the Z-axial direction in  FIG. 1 ) by a 45 degree, and the second axial direction (R 2 ) is also perpendicular to the optical path  60 . 
     As shown in  FIG. 1 , when the light-reflecting member  63  is at an initial position (the first position), a first light image in an external first photo-ing area  81  can be just able to be redirected to image on the image-capturing unit  67  by the lens module  65 . After the image-capturing unit  67  captures the first light image in the first photo-ing area  81 , a corresponding electric signal can be produced and then transmitted to the control unit  68  for following processing. When the rotating unit  64  drives the twin-axial rotating element  10  associated with the light-reflecting member  63  thereon to undergo a limited pivotal motion about the first axial direction (R 1 ), for example, so as to rotate clockwise to a second position, a foreign second light image in a second photo-ing area  81   a  can be redirected to the image-capturing unit  67  by the lens module  65 , such thon the image-capturing unit  67  can capture the second light image of the second photo-ing area  81   a  and then transform it into a corresponding electric signal for being further transmitted to and processed by the control unit  68 . On the other hand, when the rotating unit  64  drives the twin-axial rotating element  10  associated with the light-reflecting member  63  thereon to undergo another limited pivotal motion about the first axial direction (R 1 ), for example, so as to rotate counter clockwise to a third position, a foreign third light image in a third photo-ing area  81   b  can be redirected to the image-capturing unit  67  by the lens module  65 , such thon the image-capturing unit  67  can capture the third light image of the third photo-ing area  81   b  and then transform it into a corresponding electric signal for being further transmitted to and processed by the control unit  68 . 
     Similarly, when the rotating unit  64  drives the twin-axial rotating element  10  associated with the light-reflecting member  63  thereon to undergo a limited pivotal motion about the second axial direction (R 2 ), for example, so as to rotate clockwise to a fifth position, a foreign fifth light image in a fifth photo-ing area  81   c  can be redirected to the image-capturing unit  67  by the lens module  65 , such thon the image-capturing unit  67  can capture the fifth light image of the fifth photo-ing area  81   c  and then transform it into a corresponding electric signal for being further transmitted to and processed by the control unit  68 . On the other hand, when the rotating unit  64  drives the twin-axial rotating element  10  associated with the light-reflecting member  63  thereon to undergo another limited pivotal motion about the second axial direction (R 2 ), for example, so as to rotate counter clockwise to a sixth position, a foreign sixth light image in a sixth photo-ing area  81   d  can be redirected to the image-capturing unit  67  by the lens module  65 , such thon the image-capturing unit  67  can capture the sixth light image of the sixth photo-ing area  81   d  and then transform it into a corresponding electric signal for being further transmitted to and processed by the control unit  68 . In addition, when the rotating unit  64  drives the light-reflecting member  63  back to its initial position (i.e. the fourth position), a foreign fourth light image in a fourth photo-ing area can be redirected to the image-capturing unit  67  by the lens module  65 , such thon the image-capturing unit  67  can capture the fourth light image of the fourth photo-ing area and then transform it into a corresponding electric signal for being further transmitted to and processed by the control unit  68 . In this embodiment, the fourth photo-ing area and the first photo-ing area  81  are exactly the same area. Of course, the rotating unit  64  can also drive the twin-axial rotating element  10  associated with the light-reflecting member  63  to undergo a twin-axial pivotal motion. In this instance, the photo-ing area would be shifted from the original first photo-ing area  81  to an upper or lower oblique position, which will be elucidated latterly. In this present invention, the mono-axial or the twin-axial pivotal motion of the twin-axial rotating element  10  driven by the rotating unit  64  is limited to a small angular range. In the preferred embodiment, the pivotal motion is limited to an angle ranged from 1 to 3 degrees, and, even with this limited range, the design purpose in attaining a wide-ranged, long-zoomed, or analogous panoramic imaging can be still achieved. 
     The lens-driving unit  66 , engaged with the lens module  65  and electrically coupled with the control unit  68 , can drive the lens module  65  to zoom or focus in the optical path  60  (i.e. the Z-axial direction) under the control of the control unit  68 . In this embodiment, the lens-driving unit  66  can be a voice coil motor (VCM) consisted of permanent magnets and coils, a piezo motor or any driving device the like. The display unit  69  includes a touch screen to display the light image captured by the image-capturing unit  67 , or to display functional selections for the user to operate and/or adjust settings for the image-capturing device  6  or the imaging operation. The memory unit  70  includes a built-in static or dynamic RAM, or further includes a slot for receiving a memory card such as a micro SD. After the signal of the light image captured by the image-capturing unit  67  is processed by the control unit  68 , the result can be stored into the memory unit  70 . The power unit  71  including chargeable batteries and related circuits for recharging is to provide power to the image-capturing device  6 . The human-machine unit  72  including plural solid buttons on the housing  61  and virtual functional keys on the touch screen allows the user to select and manipulate various operations of the image-capturing device  6 . The I/O unit  73  including a connection port compatible with the USB or a wireless communication module such as a mobile communication module or a WLAN (wireless local area network) module allows the user to connect a foreign electronic device for possible data transmission. 
     As shown in  FIG. 2 , in this embodiment, the control unit  68  includes at least an inclination-control module  681 , a focus-control module  682 , an image-capturing module  683  and an image-integrating module  684 . All of the inclination-control module  681 , the focus-control module  682 , the image-capturing module  683  and the image-integrating module  684  are constructed in a software form and stored in the memory unit  70 . The inclination-control module  681  is to control the rotating unit  64  to drive the twin-axial rotating element  10  associated with the light-reflecting member  63  to rotate to a relevant position at a proper time. The focus-control module  682  is to control the lens-driving unit  66  to drive the lens module  65  to perform adequately zooming ad focusing so as to allow a foreign light image to be accurately imaged on the image-capturing unit  67 . The image-capturing module  683  is to control operations of the image-capturing unit  67 . After co-operating the inclination-control module  681 , the image-capturing unit  67  can capture different light images corresponding to different positions from the light-reflecting member  63 . The image-integrating module  684  is to process and integrate these different light images captured by image-capturing unit  67  and redirected by the light-reflecting member  63  into a single combined image. 
     Refer now to  FIG. 3 ,  FIG. 4A ,  FIG. 4B  and  FIG. 4C ; where  FIG. 3  demonstrates schematically a limited pivotal motion of the light-reflecting member driven by the twin-axial rotating element of the image-capturing device in accordance with the present invention, clockwise or counter clockwise about the first axial direction (R 1 ),  FIG. 4A  shows three consecutive light images captured by image-capturing unit of the image-capturing device in accordance with the present invention, in which these three light images are captured at different photo-ing areas by rotating the light-reflecting member to three corresponding positions during the pivotal motion of  FIG. 3 ,  FIG. 4B  shows a schematic view of overlapping the three light images of  FIG. 4A , and  FIG. 4C  shows schematically a single combined image after the overlapping of  FIG. 4B . 
     As shown, the first light image  91  is an image formed on the image-capturing unit  67  corresponding to the foreign light image in the first photo-ing area  81  while the twin-axial rotating element  10  associated with the light-reflecting member  63  is at the first position, the second light image  91   a  is an image formed on the image-capturing unit  67  corresponding to the foreign light image in the second photo-ing area  81   a  while the twin-axial rotating element  10  associated with the light-reflecting member  63  is at the second position, and the third light image  91   b  is an image formed on the image-capturing unit  67  corresponding to the foreign light image in the third photo-ing area  81   b  while the twin-axial rotating element  10  associated with the light-reflecting member  63  is at the third position. In this embodiment, as shown in  FIG. 1  and  FIG. 4A , the first photo-ing area  81  and the second photo-ing area  81   a  are partly overlapped in a horizontal direction, and the common or overlapped portion for the first light image  91  and the second light image  91   a  is defined as a duplicated image  92   a . Similarly, the first photo-ing area  81  and the third photo-ing area  81   b  are partly overlapped in the horizontal direction, and the common or overlapped portion for the first light image  91  and the third light image  91   b  is defined as another duplicated image  92   b . As shown in  FIG. 4B , the control unit  68  can base on the duplicated images  92   a ,  92   b  to integrate horizontally the first light image  91 , the second light image  91   a  and the third light image  91   b  so as to obtain the single combined image  93  resembled to the wide-ranged combined image shown in  FIG. 4C . In this embodiment, the first light image, the second light image and the third light image have the same length, width and pixel value. However, at least one of the length, width and pixel value of the combined image is larger than that of the first light image  91 . In this embodiment, the combined image  93  is a wide-ranged picture extending in a horizontal direction, and any of the width and the pixel value of this wide-ranged picture is larger than that of the first light image  91 . 
     In the image-capturing method of the present invention, after the camera function is set to be a horizontal wide-ranged image mode, the user can simply push at a shutter button of the image-capturing device once, the image-capturing device would base automatically on the aforesaid image-capturing method to capture the first, second and third light images, and then the single combined image formed by the aforesaid integration would be displayed directly on the touch screen. Thus, in order to obtain a wide-ranged picture, the user needn&#39;t to rotate his/her own body as well as the whole set of the image-capturing device, but needs simply a depression at the shutter bottom. 
     Refer now to  FIG. 5 ,  FIG. 6A ,  FIG. 6B  and  FIG. 6C ; where  FIG. 5  demonstrates schematically a limited pivotal motion of the light-reflecting member driven by the twin-axial rotating element of the image-capturing device in accordance with the present invention, clockwise or counter clockwise about the second axial direction (R 2 ),  FIG. 6A  shows three consecutive light images captured by image-capturing unit of the image-capturing device in accordance with the present invention, in which these three light images are captured at different photo-ing areas by rotating the light-reflecting member to three corresponding positions during the pivotal motion of  FIG. 5 ,  FIG. 6B  shows a schematic view of overlapping the three light images of  FIG. 6A , and  FIG. 6C  shows schematically a single combined image after the overlapping of  FIG. 6B . 
     Similarly, as shown in  FIG. 5 , when the control unit  68  controls the rotating unit  64  to drive the twin-axial rotating element  10  associated with the light-reflecting member  63  thereon to undergo a pivotal motion about the second axial direction (R 2 ) to go through at least a fourth position, a fifth position and a sixth position, the control unit  68  would simultaneously control the image-capturing unit  67  to capture individually at least a fourth light image (same as the first light image  91 ), a fifth light image  91   c  and a sixth light image  92   d  corresponding to different positions of the twin-axial rotating element  10 . The fourth light image  91  is an image formed on the image-capturing unit  67  corresponding to the foreign light image in the fourth photo-ing area (same as the first photo-ing area  81 ) while the twin-axial rotating element  10  associated with the light-reflecting member  63  is at the fourth position, the fifth light image  91   c  is an image formed on the image-capturing unit  67  corresponding to the foreign light image in the fifth photo-ing area  81   c  while the twin-axial rotating element  10  associated with the light-reflecting member  63  is at the fifth position, and the sixth light image  91   d  is an image formed on the image-capturing unit  67  corresponding to the foreign light image in the sixth photo-ing area  81   d  while the twin-axial rotating element  10  associated with the light-reflecting member  63  is at the sixth position. As shown in  FIG. 1  and  FIG. 6A , the fourth photo-in g area  81  and the fifth photo-ing area  81   c  are partly overlapped in a vertical direction, and the common or overlapped portion for the fourth light image  91  and the fifth light image  91   c  is defined as a duplicated image  92   c . On the other hand, the fourth photo-ing area  81  and the sixth photo-ing area  81   d  are partly overlapped in the vertical direction, and the common or overlapped portion for the fourth light image  91  and the sixth light image  91   d  is defined as another duplicated image  92   d . As shown in  FIG. 6B , the control unit  68  can base on the duplicated images  92   c ,  92   d  to integrate vertically the fourth light image  91 , the fifth light image  91   c  and the sixth light image  91   d  so as to obtain the single combined image  94  resembled to the wide-ranged combined image shown in  FIG. 6C . In this embodiment, the fourth light image, the fifth light image and the sixth light image have the same length, width and pixel value. However, at least one of the length, width and pixel value of the combined image  94  is larger than that of the fourth light image  91 . In this embodiment, the combined image  94  is a wide-ranged picture extending in a vertical direction, and any of the length and the pixel value of this wide-ranged picture is larger than that of the fourth light image  91 . Similarly, by providing the image-capturing method of the present invention, after the camera function is set to be a vertical wide-ranged image mode, the user can simply push at a shutter button of the image-capturing device once, the image-capturing device would base automatically on the aforesaid image-capturing method to capture the fourth, fifth and sixth light images, and then the single combined image formed by the aforesaid integration would be displayed directly on the touch screen. Thus, in order to obtain a wide-ranged picture, the user needn&#39;t to rotate his/her own body as well as the whole set of the image-capturing device, but needs simply a depression at the shutter bottom. 
     Refer now to  FIG. 7 ,  FIG. 8A  and  FIG. 8B ; where  FIG. 7  demonstrates schematically a limited twin-axial pivotal motion of the light-reflecting member driven by the twin-axial rotating element of the image-capturing device in accordance with the present invention, clockwise or counter clockwise about a twin-axial direction made up by the first axial direction (R 1 ) and the second axial direction (R 2 ),  FIG. 8A  shows five consecutive light images captured by image-capturing unit of the image-capturing device in accordance with the present invention, in which these five light images are captured at different photo-ing areas by rotating the light-reflecting member to five corresponding positions, and  FIG. 8B  shows schematically a single combined image after integrating the five light images of  FIG. 8A . 
     Similarly, as shown in  FIG. 7 , when the control unit  68  controls the rotating unit  64  to drive the twin-axial rotating element  10  associated with the light-reflecting member  63  thereon to undergo a twin-axial pivotal motion about the first axial direction (R 1 ) and the second axial direction (R 2 ) to go through at least a seventh position, an eighth position, a ninth position, a tenth position and an eleventh position, the control unit  68  would simultaneously control the image-capturing unit  67  to capture individually at least a seventh light image (same as the first light image  91 ), an eighth light image  91   e , a ninth light image  91   f , a tenth light image  91   g  and an eleventh light image  91   h  corresponding to different positions of the twin-axial rotating element  10 . The eighth, ninth, tenth and eleventh light images  91   e ,  91   f ,  91   g ,  91   h  are partly overlapped individually with the seventh light image  91 . The control unit  68  can base on the duplicated images between the seventh light image  91  and every one of the eighth, ninth, tenth and eleventh light images  91   e ,  91   f ,  91   g ,  91   h  to integrate and thus obtain the single combined image  95 . In this embodiment, the seventh, eighth, ninth, tenth and eleventh light images  91 ,  91   e ,  91   f ,  91   g ,  91   h  all have the same length, width and pixel value. However, the length (height), width and pixel value of the combined image  95  are all larger than those of the seventh light image  91 , so that an imaging performance resembled to an imaging by wide-ranged lens can be obtained with a better pixel value. Namely, in the aforesaid application, a wide-ranged image upon a wider ranged photo-ing area can be captured without sacrificing the image resolution. Also, with the same photo-ing area and the same image-capturing unit, the image obtained according to the aforesaid image-capturing method can produce an image with a super high resolution. Similarly, by providing the image-capturing method of the present invention, after the camera function is set to be a twin-axial wide-ranged image mode, the user can simply push at a shutter button of the image-capturing device once, the image-capturing device would base automatically on the aforesaid image-capturing method to capture the seventh, eighth, ninth, tenth and eleventh light images and then the single combined image formed by the aforesaid integration would be displayed directly on the touch screen. Thus, in order to obtain a more wider ranged picture with sacrificing the resolution, the user needn&#39;t to rotate his/her own body as well as the whole set of the image-capturing device, but needs simply a depression at the shutter bottom. 
     Referring now to  FIG. 9 , a combined image formed by overlapping a plurality of light images captured at different photo-ing areas in accordance with the image-capturing method of the present invention is shown. As described above, the image-capturing method of the present invention can also be applied to integrate the aforesaid embodiments from  FIG. 3  to  FIG. 8B , so as to have the image-capturing device of the present invention to apply the control unit  68  to control the rotating unit  64  to drive the twin-axial rotating element  10  associated with the light-reflecting member  63  to undergo mono-axial and twin-axial pivotal motions about the first axial direction (R 1 ) and the second axial direction (R 2 ) and to capture orderly nine light images arranged in a 3×3 matrix form. Then, these nine light images can be integrated to form a combined image  96  equivalent to an image with a wider range, a bigger size and a higher pixel value. Namely, in this application, a wider-ranged image can be obtained without sacrificing the resolution. 
     Referring now to  FIG. 10 , a schematic view of an image-capturing device having a switch mechanism in accordance with the present invention is shown. In this embodiment of the present invention, the image-capturing device  6  can further include a switch mechanism  74  engaged with the rotating unit  64 . The switch mechanism  74  can drive the rotating unit  64  associated with the twin-axial rotating element  10  and light-reflecting member  63  thereon to rotate about a third axial direction (R 3 ). Namely, the rotating unit  64  and the light-reflecting member  63  are driven simultaneously by the switch mechanism  74  to undergo a 360-degree rotation about the third axial direction (R 3 ). In this embodiment, the third axial direction (R 3 ) is parallel to or collinear with the optical path  60  (i.e. the Z-axial direction). Namely, the first axial direction (R 1 ) is perpendicular to the second axial direction (R 1 ), the second axial direction (R 2 ) is perpendicular to the third axial direction (R 3 ), and an angle between the first axial direction (R 1 ) and the third axial direction (R 3 ) is 45 degrees. In this embodiment, the image-capturing device  6  located corresponding to the switch mechanism  74  on the housing  61  can drive the rotating unit  64  to rotate about the third axial direction (R 3 ), and on this rotation path a plurality of light-introducing windows  62 ,  62   a  (preferably, arranged into a ring shape) are included at specific positions. Referring to  FIG. 11 , a schematic view of a panoramic combined image captured, in a 360° manner, by the image-capturing method in accordance with the present invention is shown. The switch mechanism  74  drives the rotating unit  64  associated with the twin-axial rotating element  10  and light-reflecting member  63  thereon to rotate about the third axial direction (R 3 ) by 360 degrees. Simultaneously, the control unit  68  controls the image-capturing unit  67  to capture individually a plurality of foreign light images at specific positions of the twin-axial rotating element  10  during the 360-degree rotation about the third axial direction (R 3 ). While in capturing the plurality of the light images, every two neighboring light images are overlapped partly. These light images are then integrated into a single combined image so as to obtain a 360-degree panoramic combined image. In this embodiment, the light-reflecting member  63  is a reflective lens located at the twin-axial rotating element  10 . 
     Refer now to  FIG. 12A  and  FIG. 12B ; where  FIG. 12A  shows schematically an analogous 3D (three dimensional) image captured by the image-capturing method in accordance with the present invention, and  FIG. 12B  shows a typical example for  FIG. 12A . In this application, the rotating unit  64  drives the twin-axial rotating element  10  associated with the light-reflecting member  63  thereon to rotate about the first axial direction (R 1 ), and, during the rotation, the image-capturing unit  67  captures two different light images  98   a ,  98   b  in respective two photo-ing areas in a horizontal direction, in which these two light images  98   a ,  98   b  are overlapped partly. Then, the control unit  68  would base on the duplicated image  981  of these two light images  98   a ,  98   b  to perform an analogous 3D-image process, so that an analogous 3D image  982  resulted from the duplicated image  981  can be obtained. 
     Refer now to  FIG. 13  through  FIG. 16 ; where  FIG. 13  demonstrates schematically the mounting of the twin-axial rotating element and the rotating unit on the image-capturing device of the present invention,  FIG. 14A  is a schematic perspective view of the twin-axial rotating element and the rotating unit after the inner carrier structure and the magnets are assembled together in a bottom-view direction,  FIG. 14B  is another view of  FIG. 14A  in a top-view direction,  FIG. 15  is a schematic lateral side view of  FIG. 13 , and  FIG. 16  is a schematic exploded view showing a position relationship among the magnets, the coils, the circuit boards and the magnet-detecting members of the rotating unit in accordance with the present invention. 
     In a preferred embodiment of the image-capturing device in accordance with the present invention, the assembly of the twin-axial rotating element  10  and the rotating unit  64  can provide the partly-overlapped light images for being further integrated into a single combined image, and can also provide an optical anti-shake function. As shown in  FIG. 13 , except for the assembly of the twin-axial rotating element  10  and the rotating unit  64 , the image-capturing device of the present invention can further include a shake-detecting module  30  and a position-detecting module  40 , such that the assembly of the twin-axial rotating element  10  and the rotating unit  64  can be equipped with an optical anti-shake function. 
     The twin-axial rotating element  10  located on the optical path  60  can perform at least a limited pivotal motion about a first axial direction (R 1 )  101  and a second axial direction (R 2 )  102  perpendicular to the first axial direction  101 . As shown in  FIG. 14B , in this embodiment, the twin-axial rotating element  10  is formed as a rectangular thin spring plate having four lateral sides and further including an outer frame portion  11 , a middle frame portion  12 , and an inner plate portion  13 . The inner plate portion  13  has a plane facing the optical path, and the first axial direction (R 1 )  101  and the second axial direction (R 2 )  102  are defined on this plane. The middle frame portion  12  circles around a periphery of the inner plate portion  13 . At least one first through trench  131  is formed between the middle frame portion  12  and the inner plate portion  13  for separating the middle frame portion  12  and the inner plate portion  13 , and two first connection ribs  132  aligned in the first axial direction (R 1 )  101  are provided between the middle frame portion  12  and the inner plate portion  13  for connecting the middle frame portion  12  and the inner plate portion  13 . As shown, the two first connection ribs  132  are located to two opposing sides of the inner plate portion  13  in a manner of dividing the at least one first through trench  131  into two U-shape first through trenches  131 . By providing these two first connection ribs  132 , the inner plate portion  13  and the middle frame portion  12  are thus connected. In addition, the outer frame portion  11  circles around a periphery of the middle frame portion  12 . At least one second through trench  121  is formed between the outer frame portion  11  and the middle frame portion  12  for separating the outer frame portion  11  and the middle frame portion  12 , and two second connection ribs  122  aligned in the second axial direction (R 2 )  102  are provided between the outer frame portion  11  and the middle frame portion  12  for connecting the outer frame portion  11  and the middle frame portion  13 . As shown, the two second connection ribs  122  are located to two opposing sides of the middle frame portion  12  in a manner of dividing the at least one second through trench  121  into two U-shape second through trenches  121 . By providing these two second connection ribs  122 , the middle frame portion  12  and the outer frame portion  11  are thus connected. Namely, these two first connection ribs  132  and the two second connection ribs  122  are arranged into two pairs located to respective opposing sides of the rectangular thin spring plate, such that, by providing elasticity of the thin spring plate, the inner plate portion  13  can undergo a limited pivotal motion with respect to the outer frame portion  11  about a line passing through the two first connection ribs  132  (i.e. the first axial direction  101 ), and the inner plate portion  13  can undergo another limited pivotal motion with respect to the outer frame portion  11  about a line passing through the two second connection ribs  122  (i.e. the second axial direction  102 ). Upon such an arrangement, the design goal of the twin-axial rotating element  10  to provide twin-axial pivotal motions can be achieved. Hence, by providing trenching on the thin spring plate so as to form a multi-frame structure, the twin-axial rotating element  10  as a unique piece with a simple structure, a small size and a lower cost can be thus obtained. 
     As shown from  FIG. 13  to  FIG. 16 , the rotating unit  64  connected with the twin-axial rotating element  10  is to drive the twin-axial rotating element  10  to undergo respective limited pivotal motions about the first axial direction (R 1 )  101  and the second axial direction (R 2 )  102 . In this embodiment, the rotating unit  64  is an electromagnetic driving module including at least an inner carrier structure  21 , an outer carrier structure  22 , at least one first magnet  23 , at least one second magnet  24 , at least one first coil  25 , and at least one second coil  26 . 
     The inner carrier structure  21  is engaged on a bottom of the inner plate portion  13  so as to co-move with the inner plate portion  13 , and the outer carrier structure  22  is fixed with a bottom of the outer frame portion  11 . 
     One of the first magnet  23  and the first coil  25  is mounted at the inner carrier structure  21 , while another thereof is mounted at the outer carrier structure  22 . In this embodiment, two first magnets  23  are mounted individually to two opposing sides of the inner carrier structure  21  by closing to the two second connection ribs  122 , and two first coils  25  are mounted individually to two opposing sides of the outer carrier structure  22  by closing to the two second connection ribs  122  and at locations corresponding to the two first magnets  23 . By energizing the two first coils  25 , a corresponding electromagnetic force can be produced to push the two first magnets  23  and the inner plate portion  13  on the inner carrier structure  21  to undergo a pivotal motion about the first axial direction (R 1 )  101 . 
     One of the second magnet  24  and the second coil  26  is mounted at the inner carrier structure  21 , while another thereof is mounted at the outer carrier structure  22 . In this embodiment, two second magnets  24  are mounted individually to two opposing sides of the inner carrier structure  21  by closing to the two first connection ribs  132 , and two second coils  26  are mounted individually to two opposing sides of the outer carrier structure  22  by closing to the two first connection ribs  132  and at locations corresponding to the two second magnets  24 . By energizing the two second coils  26 , a corresponding electromagnetic force can be produced to push the two second magnets  24  and the inner plate portion  13  on the inner carrier structure  21  to undergo another pivotal motion about the second axial direction (R 2 )  102 . 
     The inner carrier structure  21  is a wedge-shape frame structure having a rectangular first contact portion  211  connecting the bottom of the inner plate portion  13  and four first side surfaces  212   a ,  212   b  extending from corresponding lateral sides of the rectangular first contact portion  211  in respective directions away of the inner plate portion  13 . Two  212   a  of these four first side surfaces are shaped to two right triangles standing on opposing lateral sides of the rectangular first contact portion  211  in a parallel manner, while another two  212   b  of the four first side surfaces are shaped to two rectangles standing on another two opposing lateral sides of the rectangular first contact portion  211  in a manner of connecting at top sides thereof in a right angle. Further, on each of the first side surfaces  212   a ,  212   h , a first accommodation base  213  is included. On the other hand, the outer carrier structure  22  is another wedge-shape frame structure having a rectangular second contact portion  221  connecting the bottom of the outer frame portion  11  and four second side surfaces  222   a ,  222   b  extending from corresponding lateral sides of the rectangular second contact portion  221  in respective directions away of the outer frame portion  11 . Two  222   a  of these four second side surfaces are shaped to two right triangles standing on opposing lateral sides of the rectangular second contact portion  221  in a parallel manner, while another two  222   b  of the four second side surfaces are shaped to two rectangles standing on another two opposing lateral sides of the rectangular second contact portion  221  in a manner of connecting at top sides thereof in a right angle. Further, on each of the second side surfaces  222   a ,  222   b , a second accommodation base  223  is included. In this embodiment, the first magnet  23  is mounted into the first accommodation base  213  of the triangular first side surface  212   a  of the inner carrier structure  21 , and the first coil  25  is mounted into the second accommodation base  223  of the triangular second lateral side surface  222   a  of the outer carrier structure  22  via a first circuit board  251 . The second magnet  24  is mounted into the first accommodation base  213  of the rectangular first side surface  212   b  of the inner carrier structure  21 , and the second coil  26  is mounted into the second accommodation base  223  of the rectangular second lateral side  222   b  of the outer carrier structure  11  via a second circuit board  261 . By providing the aforesaid specific wedge-shaped frame structures to the inner and outer carrier structures  21 ,  22  and further to mount the magnets  23 ,  24  and the coils  25 ,  26 , the electromagnetic rotating unit featured in simple structuring, easy assembling, small voluming and lower costing can be thus mounted easily into a typical optical system such as a digital camera or digital recorder. 
     The shake-detecting module  77  is mounted on the lens module  65 , and the position-detecting module  40  is mounted on the rotating unit  64 . In the present invention, when the assembly of the twin-axial rotating element  10  and the rotating unit  64  is preset to perform an additional anti-shake application, the shake-detecting module  77  can be applied to detect the shake of the lens module  65 . Namely, the shake-detecting module  77  detects position deviations in the two axial directions perpendicular to the optical path  60  caused by shaking the lens module  65 . Further, the position-detecting module  40  can detect the pivotal angles of the twin-axial rotating element  10  about the first axial direction (R 1 )  101  and the second axial direction (R 2 )  102 . As shown in  FIG. 16 , the position-detecting module  40  further includes a first magnet-detecting member located at a center of the first coil  25  by corresponding to the first magnet  23  and a second magnet-detecting member  41  located at a center of the second coil  26  by corresponding to the second magnet  24 . By providing the first and second magnet-detecting members to detect the variations in the magnetic field, the corresponding pivotal angle of the twin-axial rotating element  10  can thus be computed by the control unit  68 . 
     In this embodiment, the light-reflecting member  63  is located on the plane of the inner plate portion  13  of the twin-axial rotating element  10  so as to be adjusted to have the light on the optical path  60  to radiate the lens module  65 . As shown in  FIG. 1 , the light-reflecting member  63  is a wedge prism located on the plane of the inner plate portion  13  to redirect the incident light to the lens module  65  and the image-capturing unit  67  in a 90-degree deflective manner. However, in another embodiment of the present invention, the light-reflecting member  63  can be a light-reflecting layer  139  painted directly on the plane of the inner plate portion  1 , as shown in  FIG. 15 . Similarly, the light-reflecting layer  139  is also able to deflect the optical path  60  by redirecting the incident light to the lens module  65  and the image-capturing unit  67  in a 90-degree deflective manner. 
     In the present invention, the control unit  68  is electrically coupled with the shake-detecting module  77 , the position-detecting module  78  and the rotating unit  64  so as to base on the shake of the lens module  65  detected by the shake-detecting module  77  and the pivotal angle of the twin-axial rotating element  10  detected by the position-detecting module  78  to control the rotating unit  64  to drive the twin-axial rotating element  10  to undergo a respective pivotal motion, such that the deviations on the optical path  60  caused by the shake at the lens module  65  can be corrected. In the present invention, the mono-axial or twin-axial pivotal motion of the twin-axial rotating element  10  driven by the rotating unit  64  is limited within a small angular range. In the present invention, when the pivotal motion of the twin-axial rotating element  10  driven by the rotating unit  64  is to compensate the shaking deviations, the pivotal motion is usually limited to be within 1 degree. On the other hand, when the pivotal motion of the twin-axial rotating element  10  driven by the rotating unit  64  is to provide a wide-ranged, long-scene or analogous panoramic imaging (the switch mechanism  74  is required for obtaining the panoramic imaging), then the pivotal motion is usually limited to be within a range of 1˜3 degrees (preferably around 2 degrees). 
     In the embodiment of the twin-axial rotating element and the rotating unit shown in  FIGS. 13-16  above, magnetic pushing forces are generated by means of the flat magnets  23 , 24  and their corresponding flat coils  25 , 26 , in order to drive the light-reflecting member  63  (or light-reflecting layer  139 ) furnished on the inner plate portion  13  to rotate. However, such magnetic driving mechanism using “flat” magnets  23 , 24  and “flat” coils  25 , 26  is only suitable for providing relatively small angle of rotations. When the required rotating angle is greater than 3 degrees (&gt;3°), severe variation of the gap between such flat magnet and flat coil will happen and thus causes: (a) decreased electric-magnetic driving efficiency due to the variation of the relative angle between the magnet and the coil, and (b) higher risk for the magnet to interfere (collide) nearby component (for example, the circuit board furnishing the coil) during its rotation. Therefore, the invention further discloses a novel structure using arc magnets and arc coils, so as to maintain a stable electric-magnetic driving efficiency and avoid interference when large angle rotations are performed. 
     Please refer to  FIG. 17 , which is a schematic drawing showing an example of image-capturing device of the invention having an electric-magnetic driven rotating unit comprising an arc magnet and an arc coil. As shown in  FIG. 17 , the invention discloses a rotating unit driven by electric-magnetic forces generated by using arc magnets  452  and arc coils  453 , which can drive a lens module (or light-reflecting member)  451  to rotate about at least one axis. By using the arc magnets  452  to cooperate with the arc coils  453 , no interference happens when the lens module (or light-reflecting member)  451  is rotated in a large angle; in addition, decay of electric-magnetic force caused by the variation of gap between the magnet and coil during the rotations can also be decreased. 
     Please refer to  FIGS. 18-20 , which illustrate another preferred embodiment of the rotating unit of the image-capturing device of the invention, which comprises arc magnets and arc coils. Wherein,  FIG. 18  is an exploded perspective view of an embodiment of the rotating unit comprising an arc magnet and an arc coil of the image-capturing device of the invention;  FIG. 19  is a top assembling view of the rotating unit of the invention as shown in  FIG. 18 ; and  FIG. 20  is an A-A sectional view of  FIG. 19 . 
     As shown in  FIGS. 18-20 , in this embodiment, the twin-axial rotating element  50  is formed as a rectangular thin spring plate having four lateral sides and further including an outer frame portion  51 , a middle frame portion  52 , and an inner plate portion  53 . The outer frame portion  51  is divided into two elongated strips located at two opposite sides of the twin-axial rotating element  50 . The inner plate portion  53  has a plane facing the optical path, and the first axial direction (R 1 , not shown in these figures), the second axial direction (R 2 , not shown in these figures) and a virtual center  530  located at the intersection of these two axial directions are defined on this plane. The middle frame portion  52  circles around a periphery of the inner plate portion  53 . At least one first through trench  531  is formed between the middle frame portion  52  and the inner plate portion  53  for separating the middle frame portion  52  and the inner plate portion  53 , and two first connection ribs  532  aligned in the first axial direction (R 1 ) are provided between the middle frame portion  52  and the inner plate portion  53  for connecting the middle frame portion  52  and the inner plate portion  53 . As shown, the two first connection ribs  532  are located to two opposing sides of the inner plate portion  53  in a manner of dividing the at least one first through trench  531  into two U-shape first through trenches  531 . By providing these two first connection ribs  532 , the inner plate portion  53  and the middle frame portion  52  are thus connected. In addition, the outer frame portion  51  is located at an outer periphery of the middle frame portion  52 . At least one second through trench  521  is formed between the outer frame portion  51  and the middle frame portion  52  for separating the outer frame portion  51  and the middle frame portion  52 , and two second connection ribs  522  aligned in the second axial direction (R 2 ) are provided between the outer frame portion  51  and the middle frame portion  52  for connecting the outer frame portion  51  and the middle frame portion  52 . By providing these two second connection ribs  522 , the middle frame portion  52  and the outer frame portion  51  are thus connected. Namely, these two first connection ribs  532  and the two second connection ribs  522  are arranged into two pairs located to respective opposing sides of the rectangular thin spring plate, such that, by providing elasticity of the thin spring plate, the inner plate portion  53  can undergo a limited pivotal motion with respect to the outer frame portion  51  about a line passing through the two first connection ribs  532  (i.e. The first axial direction), and the inner plate portion  53  can undergo another limited pivotal motion with respect to the outer frame portion  51  about a line passing through the two second connection ribs  522  (i.e. The second axial direction). Upon such an arrangement, the design goal of the twin-axial rotating element  50  to provide twin-axial pivotal motions can be achieved. Hence, by providing trenching on the thin spring plate so as to form a multi-frame structure, the twin-axial rotating element  50  as a unique piece with a simple structure, a small size and a lower cost can be thus obtained. Moreover, in this embodiment, each one of the connection ribs  522 , 532  is not merely a short straight line segment only, in contrast, each one of the connection ribs  522 , 532  is formed as a curved, elongated and symmetrical-shaped strip structure. As a result, not only the flexibility of each connection rib  522 , 532  can be increased, so as to vastly increase the maximum angle of rotation to a value greater than 15 degrees or even more; in addition, the strength of such novel structure of the connection rib  522 , 532  is also increased, such that the connection rib  522 , 532  won&#39;t be broken nor permanently deformed when the connection rib  522 , 532  is bearing large angle of rotation. 
     As shown from  FIG. 18  to  FIG. 20 , the rotating unit comprising arc magnets and arc coils is connected with the twin-axial rotating element  50  and is to drive the twin-axial rotating element  50  to undergo respective relatively pivotal motions in a relatively large angle about the first axial direction (R 1 ) and the second axial direction (R 2 ), for example, but not limited to, an angle greater than 3 degree or even ±15 degrees, or even higher. In this embodiment, the rotating unit is an electromagnetic driving module including at least an inner carrier structure  54 , an outer carrier structure (not shown in  FIGS. 18-20 ), at least one first arc magnet  551 , at least one second arc magnet  552 , at least one first arc coil  561 , and at least one second arc coil  562 . 
     In this embodiment, the so called “arc” magnet  551 , 552  means that, an outer side-surface of each one of these arc magnets  551 , 552  facing its corresponding coil  561 , 562  is a curved surface, and the curved surface is a portion of a spherical surface which has a center located right at the virtual center  530  of the inner frame portion  53 . In the mean time, the so called “arc” coils  561 , 562  means that, an inner side-surface of each one of these arc coils  561 , 562  facing its corresponding magnet is a curved surface, and the curved surface is a portion of another spherical surface which has a center also located right at the virtual center  530  of the inner frame portion  53 . Therefore, when at least one of these arc coils  561 , 562  is supplied with electric powers, the powered arc coils  561 , 562  work in coordination with the arc magnets  551 , 552  to generate magnetic forces, in order to push the inner carrier structure  54  together with the inner plate portion  53  and the light-reflecting member  539  to pivot (rotate) about either the first connecting ribs  532  or the second connecting ribs  522 , or both. Even when a large angle of rotation is performed, the gaps between the arc magnets  551 , 552  and their corresponding arc coils  561 , 562  will all remain the same. The interference caused by shrinking gaps and the decayed magnetic pushing force caused by increasing gaps are both avoided in this embodiment. In this embodiment, each one of the arc coils  561 , 562  is composed of a plurality of concentric wire-circles  5611 , 5612 , 5613 . The “arc” inner side-surface of each one of the arc coils  561 , 562  is achieved by making its wire-circles  5611 , 5612 , 5613  with different height (thickness). That is, a wire-circle  5611  nearer to the center will be located lower (thinner), while another wire-circle  5613  farther away from the center will be located higher (thicker), such that, an arc coil  561 , 562  having a structure with thinner center and thicker periphery can be achieved. 
     The inner carrier structure  54  is engaged on a bottom of the inner plate portion  53  so as to co-move with the inner plate portion  53 , and the outer carrier structure (not shown in  FIGS. 18-20 ) is fixed with a bottom of the outer frame portion  51 . 
     The first arc magnets  552  are mounted at the inner carrier structure  54 , while the first arc coils  561  are located at the outer carrier structure. In this embodiment, two first arc magnets  552  are mounted individually to two opposing sides of the inner carrier structure  54  by closing to the two second connection ribs  522 , and two first arc coils  562  are mounted individually to two opposing sides of the outer carrier structure by closing to the two second connection ribs  522  and at locations corresponding to the two first arc magnets  552 . By energizing the two first arc coils  562 , a corresponding electromagnetic force can be produced to push the two first arc magnets  552  and the inner plate portion  53  on the inner carrier structure  54  to undergo a pivotal motion about the first axial direction (R 1 ). 
     The second arc magnets  551  are mounted at the inner carrier structure  54 , while the second arc coils  561  are located at the outer carrier structure. In this embodiment, two second arc magnets  551  are mounted individually to two opposing sides of the inner carrier structure  54  by closing to the two first connection ribs  532 , and two second arc coils  561  are mounted individually to two opposing sides of the outer carrier structure by closing to the two first connection ribs  532  and at locations corresponding to the two second arc magnets  551 . By energizing the two second arc coils  561 , a corresponding electromagnetic force can be produced to push the two second arc magnets  551  and the inner plate portion  53  on the inner carrier structure  54  to undergo another pivotal motion about the second axial direction (R 2 ). 
     The inner carrier structure  54  is a block structure having a wider top and narrower bottom. The inner carrier structure  54  has a rectangular first contact portion  541  connecting the bottom of the inner plate portion  53  and four first side surfaces  542 , 543  extending from corresponding lateral sides of the rectangular first contact portion  541  in respective directions away of the inner plate portion  53 . Each one of the first side surfaces  542 , 543  is a curved surface. Further, on each of the curved first side surfaces  542 , 543 , a first accommodation base  544 , 545  is included. In this embodiment, the first arc magnets  552  are respectively mounted into the first accommodation bases  545  of the first side surfaces  543  of the inner carrier structure  54 . The second arc magnets  551  are respectively mounted into the first accommodation base  544  of the first side surface  542  of the inner carrier structure  54 . By providing the aforesaid specific inner carrier structure  54  having four curved side surfaces and further to mount the arc magnets  551 , 552  and the arc coils  561 , 562 , the electromagnetic rotating unit featured in simple structuring, easy assembling, small voluming and lower costing can be thus mounted easily into a typical optical system such as a digital camera or digital recorder. 
     According to the above discussions, it is understood that, in comparison with an electromagnetic driving mechanism comprising flat magnets and flat coils, the electric-magnetic driving rotating unit as illustrated in  FIGS. 18-20  uses arc magnets to work with arc coils and has at least the following advantages: (1) can provide larger angle of rotation without the risk of interference; (2) can avoid decay of electric-magnetic force caused by the variation of gap between the magnet and coil during the rotations; and (3) when such feature is combined with the optical anti-shake function, better anti-shake function can be acquired because larger angle of rotation can be performed for compensating the deviations caused by shakings. As a result, the electric-magnetic driving rotating unit using arc magnets to work with arc coils as illustrated in  FIGS. 18-20  is more suitable to be utilized in the image-capturing device and the image-capturing method of the invention. 
     While the present invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be without departing from the spirit and scope of the present invention.