JP2008310171A - Image blur correction unit, image blur correction device, photographing device and portable apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image blur correction unit capable of keeping the rocking range of a holding module as it is even when a cover is small in size, an image blur correction device with the image blur correction unit, a photographing device with the image blur correction device and a portable apparatus with the photographing device. <P>SOLUTION: The shape of the holding module 202 is formed so that a part 202P on a diagonal side of an axis point putting the optical axis of a lens 100a in between on a surface on a side facing to the cover 201 may be lowered in a direction where it is separated from the cover 201. The rocking range of the holding module 202 is kept as it is even when the cover 201 is small. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image blur correction unit that can be suitably used as a camera shake correction mechanism in an imaging device such as a digital camera or a camera-equipped mobile phone, an image blur correction device including the image blur correction unit, and the image blur correction device. The present invention relates to a photographing apparatus provided with the above and a portable device equipped with the photographing apparatus.

  2. Description of the Related Art Conventionally, various camera shake correction mechanisms have been employed in digital cameras and the like in order to suppress disturbances in captured images caused by user shake (see Patent Documents 1, 2, and 3).

  As such a camera shake correction mechanism, there is one that employs a so-called gimbal mechanism so that a holding module holding a photographing lens can be rotated in a pitching direction and a yawing direction.

  However, in the case of the gimbal mechanism as disclosed in Patent Document 1, it is necessary to arrange rotating joints and the like that freely rotate at four locations on the top, bottom, left, and right of the holding module. There is a tendency.

  Therefore, the shaft point that is one point along the outer periphery of the holding module is supported in a swingable manner, and the first point and the second direction that are different from the axial point along the outer periphery of the holding module are separated from each other. A drive structure for driving the holding module via each of the first drive point and the second drive point has been filed by the present applicant, and Japanese Patent Application Nos. 2006-269712, 2006-269713, and 2006-269714. Japanese Patent Application No. 2006-269715 has been proposed as an unpublished application. Further, the present applicant has made further improvements to these prior applications to improve the position detection accuracy of the holding module when the holding module is oscillating, and image blur correction disclosed in Japanese Patent Application No. 2007-035341. Proposed as a unit. When the drive structure proposed in these applications is realized, the image blur correction unit can be miniaturized and can be mounted on a portable device.

  FIG. 8 is a diagram for explaining the operation of the image blur correction unit.

  FIG. 8A and FIG. 8B show what kind of trouble occurs in the positional relationship between the lens and the sensor when blurring occurs, and FIG. It shows how blur is corrected by an image blur correction unit comprising a lens and a sensor.

  When camera shake does not occur as shown in FIG. 8A, the optical axis of the lens coincides with the optical axis of the light receiving surface (sensor surface) of the sensor so that the subject light is imaged at the correct position. On the other hand, when camera shake occurs, as shown in FIG. 8B, the lens and the sensor surface rotate in the direction of the arrows so that the optical axis of the lens and the optical axis of the sensor surface are deviated and the subject light is at the correct position. No longer forms an image.

  Therefore, when the image blur correction unit is mounted on a mobile device such as a camera-equipped mobile phone and camera shake occurs during shooting, an image blur correction unit composed of a lens and a sensor as shown in FIG. By performing the operation, the subject light is always focused at the correct position on the sensor surface. When the image blur correction unit is mounted on a portable device such as a camera-equipped mobile phone in this way, even if the portable device is rotated by a shooting operation, the posture of the image blur correction unit is always maintained at the posture immediately before the shooting operation, and suitable shooting is possible. Is done.

By the way, when mounting the image blur correction unit proposed by the present applicant in a portable device, it is better to clarify the outer dimensions including the swing range of the holding module provided in the image blur correction unit. Therefore, in order to clarify the outer dimensions, it is conceivable to cover all members such as the holding module provided in the image blur correction unit with a cover. However, in the image blur correction unit proposed by the applicant, the first driving point and the second driving point that are separated from the axial point in the first direction and the second direction, respectively, along the outer periphery of the holding module. Since the holding module is driven via each of the driving points, the size of the cover is inevitably increased in consideration of the swinging range of the holding module. The cover can be made smaller if the swinging range of the holding module is narrowed, but the swinging range of this holding module determines the image blur correction range, and narrowing this swinging range means correcting the image blur. This results in performance limitations.
Japanese Patent Laid-Open No. 7-274056 JP 2005-326807 A Japanese Patent No. 2612371

  In view of the above circumstances, the present invention provides an image blur correction unit that can maintain the swing range of the holding module even when the cover is small in size, an image blur correction device including the image blur correction unit, and an image thereof. It is an object of the present invention to provide an imaging device including a shake correction device and a portable device including the imaging device.

In order to achieve the above object, an image blur correction unit of the present invention includes a holding module that holds a lens,
A support member having a support portion that supports the holding module at an axial point that is a point along the outer periphery of the holding module so that the holding module can swing freely.
Two driving the holding module through the first driving point and the second driving point respectively separated from the axial point in the first direction and the second direction, respectively, along the outer periphery of the holding module. A first driving mechanism for rotating the holding module around a first axis connecting the axis point and the second driving point via the first driving point; Two drive mechanisms comprising a second drive mechanism that rotates around a second axis connecting the axis point and the first drive point via the second drive point,
In the holding module, a portion of the surface on the side where subject light is incident on the lens held by the holding module, on the diagonal side of the axis point across the optical axis of the lens, has been lowered in a direction away from the subject. It is characterized by having a shape.

  According to the image blur correction unit of the present invention, the diagonal of the axis point across the optical axis of the lens on the surface of the holding module on the side on which subject light is incident on the lens held by the holding module. The side portion has a shape that is lowered in a direction away from the subject. For this reason, the effect that the space at the time of rocking | fluctuation of a holding module can be made small compared with the past. This indicates that the swing range up to now can be secured even if the cover size is reduced.

  That is, if the image blur correction unit further includes a cover that covers the holding module, the support member, and the drive mechanism and defines the outer shape of the image blur correction unit, the dimensions of the cover are now reduced. Can be smaller than.

  Further effects can be obtained by applying the present invention to Japanese Patent Application No. 2007-035341.

  That is, the first drive point and the second drive point are divided into a line segment connecting the first drive point and the axis point, and a line segment connecting the second drive point and the axis point to each other. It is preferably formed at each position where they intersect at an angle of approximately 90 degrees.

Further, the first drive mechanism is
A first arm that rotatably supports the first drive point;
A first coil that is held by the first arm, receives a magnetic force and energization, generates a driving force in the optical axis direction, and causes the first arm to drive the first driving point in the optical axis direction; ,
A first magnet that is held by the support member and applies a magnetic force to the first coil and spreads horizontally with respect to the optical axis;
The first arm that is fixed to the support member and guides the first arm so that a first action point of the first arm that applies a driving force to the first driving point moves in the optical axis direction. And a guide member
The second drive mechanism is
A second arm that rotatably supports the second drive point;
A second coil that is held by the second arm, receives a magnetic force action and energization, generates a driving force in the optical axis direction, and causes the second arm to drive the second driving point in the optical axis direction; ,
A second magnet that is held by the support member and applies a magnetic force to the second coil and spreads horizontally with respect to the optical axis;
The second arm that is fixed to the support member and guides the second arm so that a second action point of the second arm that applies a driving force to the second driving point moves in the optical axis direction. It is preferable that the guide member is provided.

Further, a change in magnetic force received from the first magnet by the movement of the first arm in the optical axis direction when the first arm drives the first driving point supported by the first arm. A first sensor for detecting
Changes in magnetic force received from the second magnet due to movement of the second arm in the optical axis direction when the second arm is driven by the second arm and drives the second drive point. It is preferable that it is an aspect provided with the 2nd sensor to do.

  The holding module may hold the lens and hold an image sensor that captures subject light and generates an image signal.

  Moreover, it is preferable that the said holding module has a spherical convex part in the said axial point, and the said supporting member has a spherical concave surface which receives the convex part in the said support part.

  Further, the holding module has a spherical convex portion at each of the first driving point and the second driving point, and the first arm and the second arm are the first action point and Each of the second action points has a spherical concave portion for receiving the first driving point and each convex portion provided for the second driving point, and the first arm and the second driving point. It is preferable that the arm provides a driving force to each convex portion through each concave portion.

An image blur correction apparatus of the present invention that achieves the above-described problem is an image blur correction apparatus including any one of the above image blur correction units, and further includes a blur detection unit that detects blur,
According to a detection result of the shake detection unit, the two drive mechanisms are provided with a shake control unit that rotationally drives the holding module,
An imaging device of the present invention that achieves the above object includes the image blur correction device, and the holding module holds the lens, and further holds an image sensor that captures a subject and generates an image signal. , Characterized by generating an image signal with reduced blur by the operation of the image blur correction device,
A portable device of the present invention that achieves the above object is characterized by comprising the above-described photographing apparatus.

  As described above, an image blur correction unit that can keep the swinging range of the holding module as it is even with a small-sized cover, an image blur correction device including the image blur correction unit, and an image blur correction device thereof And a portable device equipped with the imaging device are realized.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view of a mobile phone device to which an embodiment of the present invention is applied.

  FIG. 1A shows a front view of the mobile phone 100. A liquid crystal panel 101 on which a menu screen, a photographed image, and the like are displayed on the front surface of the mobile phone 100, a speaker (see FIG. 2) is provided inside, and an earpiece 102 for emitting sound emitted from the speaker to the space, A selection button 104 used as a shutter button for selecting various functions and shooting, a push button 105 for inputting a telephone number, and a microphone (see FIG. 3) are provided therein to transmit voice to the microphone. No. 106 for transmitting and receiving images, address information, etc. by wireless communication for short distance without using the confirmation button 107 for confirming the telephone number entered by the user, the power button 108, and the telephone office. Two antennas 109a are provided.

  FIG. 1B shows a rear view of the mobile phone device 100. On the back surface of the mobile phone 100, a first antenna 103a and a photographing lens 100a for transmitting and receiving data such as voice and mail via a telephone station are provided. The taking lens 100a is held by an image blur correction unit described later.

  FIG. 2 is a block diagram showing an internal configuration of the cellular phone device 100 of FIG.

  The mobile phone 100 includes an image blur correction unit 200, an A / D (Analog / Digital) converter 113, a microphone 121, a speaker 122, an interface unit 120, a first antenna 103a, a first transmitter / receiver 103, and an input controller 130. , An image signal processing unit 140, a video encoder 150, an image display device 160, a second antenna 109a, a second transmission / reception unit 109, a memory 170, a CPU 180, a media controller 190, and the selection button 104 and push button 105 shown in FIG. Various switches 181 are provided, and a recording medium 190a is further connected. In the present embodiment, the image blur correction unit 200, the CPU 180, the gyro sensor 182 and the driver DR constitute an example of the image blur correction device according to the present invention, and the image blur correction device, the input controller 130, and the image signal processing unit 140 are included. The video encoder 150, the image display device 160, the liquid crystal panel 101, the media controller 190, and the recording medium 190a constitute an example of the photographing device of the present invention.

  The CPU 180 transmits processing instructions to the various elements of the mobile phone 100 shown in FIG. 2 and controls the various elements. For example, when the selection button 104 in FIG. 1 is pressed in a state in which a shooting mode for shooting is set, an instruction is given from the CPU 180 to the CCD 112 included in the image blur correction unit 200 and camera shake detected by the gyro sensor 182 is detected. The driver DR1 and DR2 are instructed to swing a holding module (described later) included in the image blur correction unit 200 in a direction to cancel the image, and shooting is performed while correcting camera shake. The configuration of the image blur correction unit 200 will be described in detail later.

  In response to pressing of the selection button 104 in FIG. 1A, the CPU 180 sets an electronic shutter in the CCD 112 in the image blur correction unit 200 and starts photographing processing.

  At this time, the direction of camera shake when the selection button 104 is pressed is detected by the gyro sensor 182 and notified to the CPU 180. The CPU 180 receives the detection result of the gyro sensor 182 and notifies the drivers DR1 and DR2 of the correction direction, and drives the drivers DR1 and DR2 to drive a coil (described later) in the image blur correction unit 200. The holding module (to be described later) is swung in response to the shake and photographing is performed. In this way, camera shake when the selection button 104 is pressed is corrected, and subject light is imaged without blurring on the CCD 112.

  The CCD 112 receives subject light that has passed through the photographing lens 100a during the shutter speed of the electronic shutter, and reads a subject image based on the subject light as a subject signal that is an analog signal. The subject signal generated by the CCD 112 is converted into digital captured image data by the A / D conversion unit 113, and the converted captured image data is sent to the image signal processing unit 140 via the input controller 130.

  The image signal processing unit 140 performs image processing such as RGB level adjustment and gamma adjustment on the image data, and further performs compression processing on the image data after the image processing. The compressed image data is once sent to the memory 170.

  The memory 170 stores a program to be executed in the mobile phone 100, a high-speed SDRAM used as an intermediate buffer, data for various menu screens, data stored by a user, and the like. An SRAM that is a storage memory and a VRAM that stores compressed image data are included. The VRAM is divided into a plurality of areas, image data is stored in the plurality of areas in order, and the stored image data is sequentially read out to the video encoder 150 and the media controller 190.

  The video encoder 150 acquires compressed image data from the memory 170 in accordance with an instruction from the CPU 180, and converts the compressed image data into a data format that can be displayed on the liquid crystal panel 101. The converted image data is sent to the image display device 160, and the image display device 160 displays an image represented by the image data on the liquid crystal panel 101. The media controller 190 is for recording the compressed image data stored in the memory 170 on the recording medium 190a and for reading the image data recorded on the recording medium 190a.

  In addition, when a telephone number is input using the push button 105 shown in FIG. 1A and the confirm button 107 is pressed, the telephone number is set and communication with the partner apparatus is started. At this time, communication information such as the telephone number of the mobile phone 100 and the input telephone number is transmitted from the CPU 180 to the first transmission / reception unit 103, the communication information is converted into radio waves and transmitted to the antenna 103a, and radio waves are transmitted from the antenna 103a. Be emitted. The radio wave emitted from the first antenna 103a is transmitted to a telephone station via a joint antenna (not shown) provided at various places such as a building and a power pole, and the other party to which a designated telephone number is assigned at the telephone station. A connection with the device is established.

  When the connection with the counterpart device is established, the voice uttered by the user toward the mobile phone 100 is collected by the microphone 121, and the collected voice is converted into radio waves representing voice data by the interface unit 120. 1 is transmitted to the counterpart device by the first antenna 103a of the transceiver 103. The radio wave received via the first antenna 103a is converted into audio data by the interface unit 120 and emitted from the speaker 122 as audio. The first transmission / reception unit 103 and the first antenna 103a transmit / receive not only voice data but also mail data representing mail using a mail address instead of a telephone number. The mail data received by the first antenna 103a and digitized by the first transmission / reception unit 103 is stored in the memory 170 by the input controller 130.

  In addition, the mobile phone 100 does not pass through the telephone office, apart from the communication interface (the first transmitting / receiving unit 103 and the first antenna 103a) for communicating with other devices such as other mobile telephones through the telephone office. In addition, a wireless communication interface (second transmission / reception unit 109, second antenna 109a) for performing communication by short-range wireless communication is also provided. As a communication interface for near field communication, infrared communication, Bluetooth, or the like can be applied. In the present embodiment, infrared communication is applied as a communication interface. When infrared light directly transmitted from another mobile phone or the like is received by the second antenna 109a, an electric signal based on the received infrared light is transmitted. 2 Picked up by the transmitting / receiving unit 109 and converted into digital data. Conversely, when data is transmitted to the external device, the data is transmitted to the second transmission / reception unit 109, and the data is converted into radio waves by the second transmission / reception unit 109 and emitted from the second antenna 109a.

  When infrared rays representing an image are received by the second antenna 109a, the second transmitting / receiving unit 109 converts an electrical signal based on the infrared rays into image data. The converted image data is sent to the image display device 160 and the image represented by the image data is displayed on the liquid crystal panel 101 or recorded on the recording medium 190a via the media controller 190 in the same manner as the captured image data. .

  The mobile phone 100 is basically configured as described above.

  Next, the configuration of the image blur correction unit 200 that constitutes a part of the photographing apparatus included in the mobile phone 100 will be described in detail.

  FIG. 3 is an exploded perspective view of the image blur correction unit. FIG. 4 is a view showing the image blur correction unit 200 after each member shown in the exploded perspective view of FIG. 3 is incorporated.

  3 and 4, the lower left corresponds to the subject side.

  3 includes a cover 201, a holding module 202, a flexible substrate FR1 for image signal transfer, a substrate 203A extending in the first direction in FIG. 3 and a substrate 203B extending in the second direction in the drawing from the lower left subject side. A flexible substrate FR2 for energizing the coils formed on both sides, a pair of arms ARM1 and ARM2 holding the substrates 203A and 203B on which the coils are formed, and the coils formed on the substrates 203A and 203B, respectively. The U-shaped yokes 204A and 204B for holding the magnets MAG1 and MAG2 in which the N pole and the S pole are arranged so as to support the two arms movably and the two yokes 204A and 204B are respectively provided. The support members 205 fixed to the surfaces extending in the first direction and the second direction are disassembled in order. It is shown in the state. When these are assembled, the shape shown in FIG. 4 is obtained.

  First, the configuration will be described with reference to FIG.

  The rightmost part of FIG. 3 shows a dog-shaped support member 205 that supports two drive mechanisms for swinging the holding module 202. Two driving mechanisms for swinging the holding module are supported by the support member 205 and the holding module is swingably supported.

  The support member 205 is provided with guide members 2051, 2052, 2053 through which holes H1, H2, H3, H4 provided at both ends of the two arms ARM1, ARM2 are respectively inserted. ing. These guide members 2051 to 2053 are respectively provided at the apexes of the support member 205 having a dogleg shape, and the central guide member 2051 has holes at both ends of both arms ARM1 and ARM2. Of these, the hole H1 and the hole H3 are inserted in common.

  That is, one arm ARM1 of the two is inserted into the guide member 2051 at the apex of the center of the V shape of the support member 205 and the guide member 2052 at the apex on the one end side of the V shape, The other arm ARM2 is inserted through the guide member 2051 at the apex of the center of the dogleg shape and the guide member 2053 at the apex on the other end side. Although not shown in the figure, the holding module side on one end side of the arms ARM1 and ARM2 (where the holes H2 and H4 are provided) engages with a spherical convex portion on the holding module side. Recesses are provided respectively. Further, a support part for supporting the holding module 202 is provided on the holding module side of the central portion of the V shape of the support member 205, and a concave part is provided in this support part.

  In addition, U-shaped yokes 204A and 204B are bonded and fixed to the surface extending in the first direction and the surface extending in the second direction in FIG. It has come to be. Since these U-shaped yokes 204A and 204B are arranged so that the openings are directed to the side where the substrates 203A and 203B on which the coils are formed are located, they are parallel to the magnets MAG1 and MAG2 from the respective opening sides. Thus, the substrates 203A and 203B are arranged so as to be accommodated. Each of the substrates 203A and 203B is connected to a flexible substrate FR2 for energizing a coil on the substrate. The substrates 203A and 203B on which the coils are formed are provided with a Hall element for detecting the position of the holding module 202 that swings according to the movement of the arms ARM1 and ARM2.

  As described above, on the holding module 202 side of the central apex portion of the V-shaped support member 205, the spherical convex portion of the holding module 202 is engaged to form a concave portion serving as a support portion for supporting the holding module 202. Since the convex portion PB of the holding module 202 is engaged with the concave portion, the spherical concave portion provided in each of the two arms ARM1 and ARM2 supported movably by the support member 205 is provided. When the convex portion of the first driving point D1 and the convex portion of the second driving point D2 of the holding module 202 are engaged, the holding module 202 is swingably supported by the support member 205 as shown in FIG. become.

  In this example, the support member 205, the arm ARM1, the substrate 203A on which the coil is formed, and the yoke 204A to which the magnet MAG1 is attached constitutes an example of the first drive mechanism according to the present invention, and the support member 205 and the arm ARM2 The substrate 203B on which the coil is formed and the yoke 204B to which the magnet MAG2 is attached constitutes an example of the second drive mechanism referred to in the present invention. The first driving mechanism rotates the holding module 202 around the first axis connecting the axis point PB and the second driving point D2 via the first driving point D1 and the second driving point D1. The driving mechanism swings the holding module by rotating around the second axis connecting the axis point PB and the first driving point D1 via the second driving point D2.

  In the present embodiment, since the cover 201 is provided to clarify the outer dimensions, the lens on the surface of the holding module 202 facing the cover 201 for the purpose of reducing the size of the cover. The part on the diagonal side of the axis PB across the optical axis 100a is shaped to be lowered in the direction away from the cover 201. The effect of this shape will be described later.

  3 shows rod-shaped members 2021A and 2021B having spherical convex portions and springs 2022A inserted through the rod-shaped members 2021 in order to show the first drive point D1 and the second drive point D2. , 2022B are shown. Each spring 2022 is a member having a function of preventing movement of each of the two arms ARM1 and ARM2 when the coil is not energized, and each spring has a convex portion (first portion when the coil is not energized. The driving point D1 and the second driving point D2) are pressed against the recess on the arm side by spring bias, and then the coil is deenergized and then the arm is stopped at the position where the coil was deenergized. It has a function.

  Further, in this example, since the holding module 202 is configured to hold the CCD 112 in addition to the lens, the flexible substrate FR1 for image signal transfer is connected to the swinging holding module 202. One end of the flexible substrate FR1 is connected to the sensor substrate PCB on which the CCD 112 is mounted, and a portion extending at least first from the sensor substrate PCB extends outward from the holding module 202 and the first point PB. Are connected so as to extend in an oblique direction with respect to both the first direction connecting the driving points D1 and the second direction connecting the axis point PB and the second driving point D2. In this way, the oscillation is not transmitted to the flexible substrate.

  The description related to the image blur correction unit 200 so far is almost the same as the description of the configuration proposed in Japanese Patent Application No. 2007-035341.

  Here, in this embodiment, in addition to the configuration of Japanese Patent Application No. 2007-035341, the configuration of the holding module has been devised, so the configuration will be described.

  FIG. 5 is a diagram illustrating the shape of the holding module and the operation of the holding module.

  FIG. 5A shows a view in which the holding module 202 is viewed from obliquely above with the cover 201 shown in FIG. 4 removed. FIG. 5 (b) shows a state of the holding module 202 in a non-operating state when the cover is mounted as seen from the lower side of FIG. 5 (a). FIG. The figure which looked at the state of the holding module 202 at the time of operation | movement when the cover was mounted | worn from the lower side of Fig.5 (a) is shown.

  As shown in FIG. 5A, in this embodiment, the cover 201 of the holding module 202 is operated so that the holding module operates normally even if the size of the cover 201 for clarifying the external dimensions is reduced. The portion 202P on the diagonal side of the axis PB across the optical axis of the lens 100a on the surface facing the lens is shaped to be lowered in the direction away from the cover 201.

  For this reason, even if the holding module 202 in the position shown in FIG. 5C is operated and the diagonal part of the axis of the holding module 202 is swung to the maximum of the swing range so far, As shown in FIG. 5C, the holding module 202 operates normally. In the past, if the swing range was kept as it was, the cover could not be made smaller. However, according to the present invention, the maximum swing portion of the holding module is reduced in height, so the cover can be made smaller. Even so, the holding module swings within the same swing range as before.

  As described above, an image blur correction unit that can keep the swinging range of the holding module as it is even with a small-sized cover, an image blur correction device including the image blur correction unit, and an image blur correction device thereof And a portable device equipped with the imaging device are realized.

1 is an external perspective view of a mobile phone device to which an embodiment of the present invention is applied. It is a block diagram which shows the internal structure of the mobile telephone device 100 of FIG. It is a disassembled perspective view of an image blur correction unit. It is a figure which shows the state after an image blurring correction unit is assembled by each member shown by the exploded perspective view of FIG. It is a figure explaining the shape of a holding module and operation | movement of a holding module.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Mobile phone 101 Liquid crystal panel 102 Mouthpiece 103a 1st antenna 104 Selection button 105 Push button 106 Earpiece 107 Confirmation button 108 Power button 109a 2nd antenna 112 CCD
113 A / D conversion unit 120 Interface unit 121 Microphone 122 Speaker 130 Input controller 140 Image signal processing unit 150 Video encoder 160 Image display device 170 Memory 180 CPU
181 Various switches 200 Image blur correction unit 100a Lens 201 Cover 202 Holding module 203A 203B Substrate 204A 204B Yoke 2051 2052 2053 Guide member FR1 FR2 Flexible substrate ARM1 ARM2 Arm PB Axis point (spherical convex part)
D1 1st driving point (spherical convex part)
D2 Second driving point (spherical convex part)

Claims (11)

A holding module for holding the lens;
A support member having a support portion that supports the holding module at an axial point that is a point along the outer periphery of the holding module so that the holding module can swing freely.
Two driving the holding module through the first driving point and the second driving point respectively separated from the axial point in the first direction and the second direction, respectively, along the outer periphery of the holding module. A first driving mechanism for rotating the holding module around a first axis connecting the axis point and the second driving point via the first driving point; Two drive mechanisms comprising a second drive mechanism that rotates around a second axis connecting the axis point and the first drive point via the second drive point,
In the holding module, a portion of the surface on the side where subject light is incident on the lens held by the holding module, on the diagonal side of the axis point across the optical axis of the lens, has been lowered in a direction away from the subject. An image blur correction unit having a shape.   The image blur correction unit according to claim 1, further comprising a cover that covers the holding module, the support member, and the drive mechanism and defines an outer shape of the image blur correction unit.   The first drive point and the second drive point are substantially equal to each other by a line segment connecting the first drive point and the axis point and a line segment connecting the second drive point and the axis point. 3. The image blur correction unit according to claim 1, wherein the image blur correction unit is formed at each position intersecting at an angle of degrees. The first drive mechanism is
A first arm that rotatably supports the first drive point;
A first coil that is held by the first arm, receives a magnetic force and current, generates a driving force in the optical axis direction, and causes the first arm to drive the first driving point in the optical axis direction; ,
A first magnet that is held by the support member and applies a magnetic force to the first coil and spreads horizontally with respect to the optical axis;
A first guide that is fixed to the support member and guides the first arm so that a first action point of the first arm that applies a driving force to the first drive point moves in the optical axis direction. And a guide member
The second drive mechanism is
A second arm that rotatably supports the second drive point;
A second coil which is held by the second arm, receives a magnetic force action and energization, generates a driving force in the optical axis direction, and causes the second arm to drive the second driving point in the optical axis direction; ,
A second magnet that is held by the support member and applies a magnetic force to the second coil and spreads horizontally with respect to the optical axis;
The second arm that is fixed to the support member and guides the second arm so that a second action point of the second arm that applies a driving force to the second driving point moves in the optical axis direction. The image blur correction unit according to any one of claims 1 to 3, further comprising: a guide member. Further, a change in magnetic force received from the first magnet by the movement of the first arm in the optical axis direction when the first arm drives the first driving point supported by the first arm. A first sensor for detecting
Changes in magnetic force received from the second magnet due to movement of the second arm in the optical axis direction when the second arm drives the second drive point supported by the second arm are detected. The image blur correction unit according to claim 4, further comprising: a second sensor that performs the operation.   6. The image blur according to claim 1, wherein the holding module holds an lens and holds an image sensor that captures subject light and generates an image signal. 7. Correction unit.   The said holding module has a spherical convex part in the said axial point, The said supporting member has a spherical concave surface which receives this convex part in the said support part, The Claim 3 to 6 characterized by the above-mentioned. The image blur correction unit according to claim 1.   The holding module has spherical convex portions at the first driving point and the second driving point, respectively, and the first arm and the second arm are the first action point and the second driving point, respectively. Each of the two operating points has spherical concave portions that receive the convex portions provided at the first driving point and the second driving point, respectively, and the first arm and the second arm are 8. The image blur correcting unit according to claim 3, wherein a driving force is applied to each convex portion through each concave portion. An image blur correction apparatus comprising the image blur correction unit according to any one of claims 1 to 8, further comprising a blur detection unit for detecting blur,
An image blur correction apparatus comprising: a blur control unit that causes the two drive mechanisms to rotationally drive the holding module according to a detection result of the blur detection unit.   The image blur correction apparatus according to claim 9, wherein the holding module holds the lens and further holds an image sensor that captures a subject and generates an image signal, and the image blur correction apparatus operates. An image pickup apparatus that generates an image signal with reduced blur due to the above.   A portable apparatus comprising the photographing apparatus according to claim 10.

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