JP2015219401A - Optical device for photography and control method of optical device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical device for photography that can prevent a member on a camera module side from coming into contact with a member on a support body side supporting the camera module when the camera module oscillates even if the device is downsized in a direction almost orthogonal to an optical axis.SOLUTION: An optical device for photography is configured to compare an amount of oblique correction limit in a tremor correction direction of a camera module with an amount of target tremor correction to identify a first amount of target tremor correction equal to or less than the amount of oblique correction limit; compare a first tremor correction component Pt of the first amount of target tremor correction with a first amount of correction limit PL0 to identify a second tremor correction component so as to be equal to or less than an amount of oblique correction limit PL0; compare a third tremor correction component Yt of the first amount of target tremor correction with a second amount of correction limit YL0 to identify a fourth correction component so as to be equal to or less than the second amount of correction limit YL0; and determine an amount of tremor correction made up of the second tremor correction component and the fourth tremor correction component as an amount of actual tremor correction of the camera module.

Description

  The present invention relates to a photographing optical apparatus having a shake correction function for correcting shake of an optical image. The present invention also relates to a method for controlling a photographic optical device having a shake correction function.

  2. Description of the Related Art Conventionally, an optical unit with a shake correction function (hereinafter, referred to as “photographing optical device”) having a shake correction function for correcting shake of an optical image due to camera shake or the like is known (for example, see Patent Document 1). A photographic optical device described in Patent Document 1 includes a movable body having an imaging unit, a fixed body that supports the movable body in a swingable manner, a spring member that connects the movable body and the fixed body, and a fixed body. And a shake correction drive mechanism that corrects the shake by swinging the movable body. The movable body is formed in a quadrangular prism shape that is substantially square when viewed from the optical axis direction of the lens of the imaging unit. The fixed body includes a substantially square cylindrical cover member surrounding the outer peripheral side of the movable body. The shake correction drive mechanism is fixed to the outer peripheral surface of the movable body (specifically, fixed to each of the four outer surfaces of the movable body) and the inner peripheral surface of the cover member. (Specifically, it is fixed to each of the four inner surfaces of the cover member).

  In the photographing optical device described in Patent Document 1, the X direction that is substantially orthogonal to the optical axis of the lens of the imaging unit and the Y direction that is substantially orthogonal to the optical axis direction (optical axis direction) and the X direction are permanent. The magnet and the coil portion are opposed to each other. Also, in this optical device for photographing, the movable body can be displaced in the X and Y directions so that the permanent magnet and the coil portion do not come into contact with each other when the movable body swings with respect to the fixed body. ing. Specifically, the maximum value of the drive current supplied to the coil portion is defined so that the permanent magnet and the coil portion do not come into contact when the movable body swings with respect to the fixed body.

International Publication No. 2013/099617

  In the photographing optical device described in Patent Document 1, the range in which the movable body can be displaced is restricted in the X direction and the Y direction, but the movable body can be displaced in a direction inclined with respect to the X direction and the Y direction. The range is not regulated. Therefore, in this photographing optical device, when the movable body swings in the direction inclined with respect to the X direction and the Y direction, the contact between the movable body side member and the fixed body side member is prevented, and the movable body side member or In order to prevent damage to the member on the fixed body side, a large gap must be provided between the member on the movable body side and the member on the fixed body side in the direction inclined with respect to the X direction and the Y direction. As a result, in this photographing optical device, the size of the device increases in a direction substantially orthogonal to the optical axis direction.

  Therefore, an object of the present invention is to provide a photographic optical device having a shake correction function for correcting shake of an optical image even when the camera module swings even if the device is downsized in a direction substantially perpendicular to the optical axis direction. An object of the present invention is to provide a photographing optical device capable of preventing contact between a member on the camera module side and a member on a support body supporting the camera module so as to be swingable. Another object of the present invention is to provide a method for controlling a photographing optical apparatus having a shake correction function for correcting a shake of an optical image, even if the photographing optical apparatus is downsized in a direction substantially orthogonal to the optical axis direction. An object of the present invention is to provide a method for controlling an optical device for photographing that can prevent contact between a member on the camera module side and a member on a support body that supports the camera module so that the camera module can swing when the camera swings. .

  In order to solve the above-described problems, an imaging optical device according to the present invention includes a camera module having a lens and an imaging element, and a support that supports the camera module in a swingable manner, and the camera module with respect to the support. If the direction of the optical axis of the lens when is at the predetermined reference position is the reference direction, the camera module is swung so that the optical axis of the lens tilts with the predetermined first direction orthogonal to the reference direction as the axis direction of oscillation. The camera module is swung so that the optical axis of the lens is tilted with the first swing mechanism that is moved to correct the shake of the camera module and the second direction orthogonal to the reference direction and the first direction as the swing axis direction. The second swing mechanism for correcting the shake of the camera module, the tilt detection mechanism for detecting a change in the tilt of the camera module, and the tilt detection mechanism. A control unit that drives the mechanism and the second swing mechanism, and when the direction inclined with respect to the first direction and the second direction when viewed from the reference direction is an oblique direction, A first correction limit amount for electrically limiting a shake correction amount in one of the first directions and a shake correction amount in the first direction of the camera module at the reference position when viewed from the direction; The second correction limit for electrically limiting the shake correction amount in one of the second directions and the shake correction amount in the other of the second direction of the camera module at the reference position when viewed from the reference direction. Oblique correction limit for electrically limiting the amount of shake correction to one of the oblique directions and the amount of shake correction to the other of the oblique directions of the camera module at the reference position when viewed from the reference direction Is stored, and the controller uses the tilt detection mechanism. Based on the detection result, the shake correction direction of the camera module when viewed from the reference direction is specified and the target shake correction amount in the shake correction direction is calculated. When the shake correction direction is at least an oblique direction, the camera module is viewed from the reference direction. If the target shake correction amount is larger than the tilt correction limit amount in the shake correction direction, the target shake correction amount is corrected so that the target shake correction amount matches the target shake correction amount. If the target shake correction amount is equal to or less than the oblique correction limit amount in the shake correction direction, the target shake correction amount is directly used as the first target shake correction amount in the shake correction direction. If the first shake correction component, which is the shake correction amount in the first direction of the first target shake correction amount when viewed from the direction, is larger than the first correction limit amount. The first shake correction component is corrected to the first correction limit amount to be the second shake correction component. If the first shake correction component is equal to or less than the first correction limit amount, the first shake correction component is directly used as the second shake correction component. If the third shake correction component, which is the shake correction amount in the second direction of the first target shake correction amount, is larger than the second correction limit amount when viewed from the reference direction, the third shake correction component is If the third shake correction component is equal to or smaller than the second correction limit amount, the third shake correction component is used as it is as the fourth shake correction component. Is the final shake correction amount in the first direction, the shake correction amount having the fourth shake correction component as the final shake correction amount in the second direction is determined as the actual shake correction amount of the camera module, and the determined actual shake correction amount Based on the shake correction direction, the first swing mechanism and the second swing mechanism By driving the moving mechanism and corrects the shake of the camera module.

  In order to solve the above-described problems, a method for controlling an imaging optical device according to the present invention includes a camera module having a lens and an imaging device, a support that supports the camera module in a swingable manner, and a support. Assuming that the direction of the optical axis of the lens when the camera module is at a predetermined reference position is the reference direction, the camera module is inclined so that the optical axis of the lens is inclined with the predetermined first direction orthogonal to the reference direction as the axis direction of oscillation. The camera module is tilted so that the optical axis of the lens is tilted with the second direction perpendicular to the reference direction and the first direction as the axis direction of the swing. A second swing mechanism that swings to correct camera module shake, a tilt detection mechanism that detects a change in tilt of the camera module, a first direction and a first direction when viewed from the reference direction Assuming that the direction inclined with respect to the direction is an oblique direction, when viewed from the reference direction, the shake correction amount of the camera module at the reference position in one of the first directions and the shake correction in the other of the first directions A first correction limiting amount for electrically limiting the amount, and a shake correction amount in one of the second directions and the other in the second direction of the camera module at the reference position when viewed from the reference direction The second correction limit amount for electrically limiting the shake correction amount, and the camera module at the reference position when viewed from the reference direction, the shake correction amount in one of the oblique directions and the other in the oblique direction. A method for controlling a photographing optical apparatus comprising a limit amount storage unit that stores an oblique correction limit amount for electrically limiting a shake correction amount, and a reference direction based on a detection result of an inclination detection mechanism Camera mod when viewed from If the shake correction direction specified in the target shake correction amount calculation step and the target shake correction amount calculation step for specifying the shake correction direction of the tool and calculating the target shake correction amount in the shake correction direction are at least oblique directions, If the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction when viewed from the reference direction, the target shake correction amount is calculated so that the oblique correction limit amount and the target shake correction amount in the shake correction direction match. The target shake correction amount calculated in the step is corrected to be the first target shake correction amount, and if the target shake correction is equal to or less than the oblique correction limit amount in the shake correction direction, the target shake correction amount calculation step calculates. A first correction step that uses the target shake correction amount as it is as the first target shake correction amount, and the first eye when viewed from the reference direction after the first correction step. If the first shake correction component that is the shake correction amount in the first direction of the standard shake correction amount is larger than the first correction limit amount, the first shake correction component is corrected to the first correction limit amount and the second shake correction component. If the first shake correction component is equal to or smaller than the first correction limit amount, the first shake correction component is used as it is as the second shake correction component, and the first target shake correction amount of the first target shake correction amount when viewed from the reference direction. If the third shake correction component, which is the shake correction amount in two directions, is larger than the second correction limit amount, the third shake correction component is corrected to the second correction limit amount to be the fourth shake correction component. If the component is equal to or less than the second correction limit amount, the second correction step using the third shake correction component as it is as the fourth shake correction component, the second shake correction component as the final shake correction amount in the first direction, and the fourth The shake correction amount with the shake correction component as the final shake correction amount in the second direction Based on the shake correction amount determination step determined as the actual shake correction amount of the module, the actual shake correction amount determined in the shake correction amount determination step, and the shake correction direction specified in the target shake correction amount calculation step. And a shake correction step of correcting the shake of the camera module by driving the first swing mechanism and the second swing mechanism.

  In the photographic optical device of the present invention and the control method of the photographic optical device of the present invention, when viewed from the reference direction, the camera module at the reference position has a shake correction amount in one of the first directions and the first direction. The first correction limit amount for electrically limiting the shake correction amount to the other of the first and second camera shake correction amounts in the second direction and the first correction amount when viewed from the reference direction. A second correction limiting amount for electrically limiting a shake correction amount in the other of the two directions, and a shake correction amount in one of the oblique directions of the camera module at the reference position when viewed from the reference direction; An oblique correction limit amount for electrically limiting the shake correction amount to the other in the oblique direction is stored. Further, in the present invention, when the camera module shake correction direction is an oblique direction, the oblique correction limit amount in the shake correction direction is compared with the target shake correction amount, and becomes equal to or less than the oblique correction limit amount in the shake correction direction. The first target shake correction amount is specified, and the first shake correction component, which is the shake correction amount in the first direction of the first target shake correction amount, is compared with the first correction limit amount. The second shake correction component is specified so that the second target shake correction amount is compared, and the third shake correction component, which is the shake correction amount in the second direction of the first target shake correction amount, is compared with the second correction limit amount. The fourth shake correction component is specified so as to be equal to or less than the correction limit amount. In addition, the shake correction amount having the second shake correction component as the final shake correction amount in the first direction and the fourth shake correction component as the final shake correction amount in the second direction is determined as the actual shake correction amount of the camera module, and confirmed. Based on the actual shake correction amount and the shake correction direction, the first swing mechanism and the second swing mechanism are driven to correct the shake of the camera module.

  That is, in the present invention, the shake correction amount of the camera module in the first direction and the second direction is restricted, and the shake correction amount of the camera module in the oblique direction is restricted. Therefore, in the present invention, even if the support body is downsized in the first direction, the second direction, and the oblique direction, contact between the camera module side member and the support side member when the camera module swings is prevented. It becomes possible. Therefore, in the present invention, even if the photographic optical device is downsized in a direction substantially orthogonal to the optical axis direction, contact between the camera module side member and the support side member when the camera module swings is prevented. It becomes possible.

  In the present invention, if the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction, the target shake correction amount is corrected so that the oblique correction limit amount and the target shake correction amount in the shake correction direction match. After setting the first target shake correction amount in the shake correction direction, if the first shake correction component of the first target shake correction amount is larger than the first correction limit amount, the first shake correction component is set as the first correction limit amount. If the third shake correction component of the first target shake correction amount is larger than the second correction limit amount, the third shake correction component is corrected to the second correction limit amount. The fourth shake correction component is used. Therefore, in the present invention, it becomes possible to prevent the deviation between the shake correction direction of the camera module specified based on the detection result of the tilt detection mechanism and the actual shake correction direction of the camera module, or Even if the shake correction direction of the camera module specified based on the detection result of the tilt detection mechanism deviates from the actual shake correction direction of the camera module, the amount of shift can be reduced. Therefore, according to the present invention, it is possible to perform an appropriate shake correction operation of the camera module.

In the present invention, when the intersection point between the first direction and the second direction when viewed from the reference direction is the origin, the origin is centered by the set of oblique correction limit amounts when viewed from the reference direction. A square virtual square having a diagonal direction between the direction and the second direction is formed. When viewed from the reference direction, the first shake correction component is Pt, the third shake correction component is Yt, and the target The shake correction amount in the first direction of the shake correction amount is Pt1, the shake correction amount in the second direction of the target shake correction amount is Yt1, and the distance between the intersection of the first direction or the second direction and the virtual square and the origin is Assuming GL, if the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction when viewed from the reference direction, the control unit calculates the first shake correction component Pt and the third shake correction component Pt based on the following calculation formula: Calculate shake correction component Yt Door is preferable.
Pt = GL × (Pt1 / (Pt1 + Yt1))
Yt = GL × (Yt1 / (Pt1 + Yt1))
If comprised in this way, it will become possible to calculate the 1st shake correction component Pt and the 3rd shake correction component Yt by simple calculation. Accordingly, it is possible to reduce the arithmetic processing in the control unit.

  In the present invention, the first correction limit amount and the second correction limit amount are equal, and when viewed from the reference direction, the origin is the center, and the first correction limit amount and the second correction limit amount are the radius. The virtual circle to be inscribed is preferably inscribed in the virtual square. That is, it is preferable that the length of one side of the virtual square is equal to the diameter of the virtual circle when viewed from the reference direction. With this configuration, it is possible to further limit the shake correction amount of the camera module in the oblique direction as compared with the case where the length of one side of the virtual square is longer than the diameter of the virtual circle. Therefore, compared with the case where the length of one side of the virtual square is longer than the diameter of the virtual circle, the photographing optical device can be further downsized in the oblique direction.

  In the present invention, for example, when viewed from the reference direction, two first straight lines that pass through each of the two intersections of the virtual circle and the first direction and are parallel to the second direction, the virtual circle, and the first circle An octagonal region is defined by two second straight lines that pass through each of two intersections with two directions and are parallel to the first direction, and a part of the virtual square. It is a swinging region where the module swings.

  As described above, according to the present invention, even when the photographic optical device is downsized in a direction substantially orthogonal to the optical axis direction, contact between the camera module side member and the support side member when the camera module swings. Can be prevented. In the present invention, it is possible to perform an appropriate shake correction operation of the camera module.

1 is a schematic plan view of a photographic optical device according to an embodiment of the present invention. It is a schematic sectional drawing of the EE cross section of FIG. It is a block diagram of the structure relevant to the control part of the optical apparatus for imaging | photography shown in FIG. 1, and a control part. It is a conceptual diagram for demonstrating shake correction amount restriction | limiting control of the camera module in the optical device for imaging | photography shown in FIG. It is a conceptual diagram for demonstrating shake correction amount restriction | limiting control of the camera module in the optical device for imaging | photography shown in FIG. 3 is a flowchart illustrating an example of a flow of camera shake correction amount restriction control of the camera optical device illustrated in FIG. 1.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Configuration of optical device for photographing)
FIG. 1 is a schematic plan view of a photographing optical device 1 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view taken along the line EE of FIG. FIG. 3 is a block diagram of a configuration related to the control unit 10 and the control unit 10 of the photographing optical apparatus 1 shown in FIG. In the following description, as shown in FIGS. 1 and 2, the three directions orthogonal to each other are defined as the X direction, the Y direction, and the Z direction, the X direction is the left-right direction, the Y direction is the front-rear direction, and the Z direction is the up-down direction. And The Z1 direction side is the “upper” side, and the Z2 direction side is the “lower” side.

  The photographing optical device 1 according to the present embodiment is a small and thin camera mounted on a portable device such as a mobile phone, a drive recorder, a surveillance camera system, or the like, and has a shake correction function for correcting shake of an optical image. . The photographing optical device 1 is formed in a rectangular parallelepiped shape having a substantially square shape when viewed from the direction of the optical axis L (optical axis direction) of the photographing lens. One side surface is substantially parallel to a YZ plane constituted by the front-rear direction and the vertical direction or a ZX plane constituted by the left-right direction and the vertical direction.

  The photographic optical device 1 includes a camera module 3 having a lens and an image sensor, a support 4 that supports the camera module 3 in a swingable manner, and a camera module with respect to the support 4 in order to correct shake such as camera shake. And a rocking mechanism 5 for rocking 3. As shown in FIG. 2, the camera module 3 and the support 4 are connected by a leaf spring 6, and the camera module 3 is swingably held by the support 4 via the leaf spring 6. The photographing optical device 1 includes an inclination detection mechanism 7 for detecting a change in the inclination of the optical axis L, position detection mechanisms 8 and 9 for detecting the relative position of the camera module 3 with respect to the support body 4, And a control unit 10 of the photographing optical device 1.

  In the present embodiment, the vertical direction coincides with the direction of the optical axis L of the camera module 3 when the camera module 3 is not swinging. In this embodiment, the camera module 3 is at a predetermined reference position with respect to the support 4 when the camera module 3 is not swinging. That is, the vertical direction of the present embodiment is the direction of the optical axis L when the camera module 3 is at the reference position with respect to the support 4 and is the reference direction. In this embodiment, an image sensor is attached to the lower end side of the camera module 3, and a subject arranged on the upper side is photographed. That is, in this embodiment, the upper side (Z1 direction side) is the subject side (object side), and the lower side (Z2 direction side) is the anti-subject side (imaging element side, image side). In this embodiment, the front-rear direction (Y direction) is a first direction orthogonal to the up-down direction that is the reference direction, and the left-right direction (X direction) is the second direction orthogonal to the reference direction and the first direction. It is.

  The camera module 3 is formed in a rectangular parallelepiped shape that is substantially square when viewed from the optical axis direction. The four side surfaces of the camera module 3 when the camera module 3 is at the reference position are substantially parallel to the YZ plane or the ZX plane. The camera module 3 includes, for example, a substantially conical or substantially pyramidal fulcrum member 11 that protrudes downward. The fulcrum member 11 is arranged so that its apex faces downward. When viewed from the vertical direction, the vertex of the fulcrum member 11 is arranged at the center of the camera module 3, and the optical axis L passes through the vertex of the fulcrum member 11.

  The camera module 3 includes a lens driving mechanism for driving the lens in the optical axis direction in addition to the above-described lens and imaging element. That is, the photographic optical device 1 of this embodiment also has an autofocus function. The lens driving mechanism is constituted by, for example, a driving coil and a driving magnet. Note that the camera module 3 may not include a lens driving mechanism. That is, the photographing optical device 1 may not have the autofocus function.

  The support 4 has a bottom having a substantially square cylindrical tube portion 4a that forms four front and rear, left and right side surfaces (outer peripheral surfaces) of the photographing optical device 1, and a bottom portion 4b that forms the lower surface of the photographing optical device 1. It is formed in a substantially square cylindrical shape with a mark. The support 4 is fixed to a frame of a portable device or the like on which the photographing optical device 1 is mounted.

  The camera module 3 is accommodated in the support 4. The vertex of the fulcrum member 11 is in contact with the upper surface of the bottom portion 4 b, and the contact point between the vertex of the fulcrum member 11 and the bottom portion 4 b is a fulcrum 12 of the camera module 3 swinging with respect to the support 4. As described above, the optical axis L passes through the vertex of the fulcrum member 11, and the fulcrum 12 is disposed on the optical axis L. Instead of the fulcrum member 11, the support 4 may include a fulcrum member formed in a substantially conical shape or a substantially pyramidal shape. In this case, the fulcrum member provided in the support body 4 is arranged so that the apex thereof faces upward, and the contact point between the apex of the fulcrum member and the bottom surface of the camera module 3 becomes the fulcrum of the camera module 3.

  The leaf spring 6 includes a movable side fixed portion fixed to the lower end side of the camera module 3, a fixed side fixed portion fixed to the lower end side of the support body 4, and a plurality of connecting the movable side fixed portion and the fixed side fixed portion. The camera module 3 can be swung by bending the arm portion with respect to the fixed side fixing portion. The leaf spring 6 is located with respect to the support 4 so that the camera module 3 is disposed at the reference position when no current is supplied to drive coils 16 and 18 (described later) constituting the swing mechanism 5. The camera module 3 is energized. Further, the leaf spring 6 generates a biasing force for reliably bringing the apex of the fulcrum member 11 and the upper surface of the bottom portion 4b into contact (that is, a biasing force that biases the camera module 3 downward). Like), it is fixed in a bent state.

  The swing mechanism 5 is a first swing that corrects the shake of the camera module 3 by swinging the camera module 3 so that the optical axis L tilts in the left-right direction with the fulcrum 12 as the center and the longitudinal direction as the swing axis direction. The mechanism 14 and a second swing mechanism 15 that corrects the shake of the camera module 3 by swinging the camera module 3 so that the optical axis L tilts in the front-rear direction with the left-right direction centered on the fulcrum 12 as the swing axis direction. And.

  The first oscillating mechanism 14 includes two driving coils 16 and two driving magnets 17 disposed to face each of the two driving coils 16. The second oscillating mechanism 15 includes two drive coils 18 and two drive magnets 19 disposed to face each of the two drive coils 18. The drive coils 16 and 18 are air-core coils formed by being wound in a substantially rectangular shape, for example. The drive magnets 17 and 19 are formed in a substantially rectangular flat plate shape, for example.

  Each of the two driving coils 16 is fixed to each of the inner side surfaces of the left and right side surfaces of the cylindrical portion 4a of the support 4, and each of the two driving coils 18 is a front and rear side surface of the cylindrical portion 4a. It is fixed to each of the inner surface of the part. Each of the two drive magnets 17 is fixed to each of the left and right side surfaces of the camera module 3 so as to face the drive coil 16 in the left-right direction, and each of the two drive magnets 19 is in the front-rear direction. Are fixed to the front and rear side surfaces of the camera module 3 so as to face the driving coil 18. The two drive coils 16 are connected in series with each other. The two drive coils 18 are connected in series with each other.

  The tilt detection mechanism 7 is a gyroscope (angular velocity sensor) that detects a change in the tilt of the optical axis L in the front-rear direction and a change in the tilt of the optical axis L in the left-right direction. The inclination detection mechanism 7 is fixed to the lower surface of the bottom portion 4b of the support body 4, for example. The position detection mechanisms 8 and 9 are fixed to, for example, the bottom surface of the camera module 3 and are disposed so as to face the top surface of the bottom portion 4 b of the support 4. The position detection mechanisms 8 and 9 include, for example, a reflective optical sensor that includes a light emitting element such as a light emitting diode and a light receiving element such as a phototransistor that receives light emitted from the light emitting element and reflected by the upper surface of the bottom portion 4b. It is. In this embodiment, the position detection mechanism 8 detects the relative position of the camera module 3 with respect to the support 4 in the swinging direction of the camera module 3 with the front-rear direction being the axial direction, and the position detection mechanism 9 is the axial direction in the left-right direction. The relative position of the camera module 3 with respect to the support 4 in the swinging direction of the camera module 3 is detected. Note that the tilt detection mechanism 7 may be fixed to a frame of a portable device or the like on which the photographing optical device 1 is mounted. Further, the position detection mechanisms 8 and 9 may be magnetic sensors having Hall elements or the like.

  The control unit 10 includes a drive circuit for driving the first swing mechanism 14 and the second swing mechanism 15. The drive circuit supplies current to the drive coils 16 and 18 to drive the first swing mechanism 14 and the second swing mechanism 15. In addition, the control unit 10 includes a limit amount storage unit 21 in which a first correction limit amount PL0, a second correction limit amount YL0, and an oblique correction limit amount, which will be described later, are stored. An inclination detection mechanism 7 and position detection mechanisms 8 and 9 are connected to the control unit 10.

  In the photographic optical device 1 configured as described above, when a change in the inclination of the optical axis L is detected by the inclination detection mechanism 7, the driving coils 16 and 18 are based on the detection result of the inclination detection mechanism 7. Is supplied with current. Specifically, current is supplied to the drive coils 16 and 18 so that the output of the tilt detection mechanism 7 becomes zero. When a current is supplied to the driving coils 16 and 18, the camera module 3 swings so that the optical axis L is inclined with the fulcrum 12 as the center and the left and right direction and / or the front and rear direction as the axial direction, and the shake is corrected. Is done. Further, at the time of shake correction, the value of the current (current value) supplied to the drive coils 16 and 18 is controlled based on the detection results of the position detection mechanisms 8 and 9.

  As described above, the camera module 3 and the support body 4 are connected by the leaf spring 6, and the leaf spring 6 is a camera module when no current is supplied to the drive coils 16 and 18. The camera module 3 is biased with respect to the support body 4 so that 3 is arranged at the reference position. Therefore, as the inclination of the camera module 3 from the reference position increases, the urging force of the leaf spring 6 increases. Therefore, at the time of shake correction, the current value supplied to the drive coils 16 and 18 increases as the inclination of the camera module 3 from the reference position increases.

  In this embodiment, when the camera module 3 swings, the camera module 3 side member (specifically, the camera module 3 and the drive magnets 17 and 19) and the support body 4 side member (specifically, In order to prevent contact between the support 4 and the driving coils 16, 18), the shake correction amount of the camera module 3 at the time of shake correction is electrically limited. Specifically, the current value supplied to the driving coils 16 and 18 or the voltage applied to the driving coils 16 and 18 is limited. That is, in this embodiment, shake correction amount restriction control for electrically restricting the shake correction amount of the camera module 3 is performed. Hereinafter, the shake correction amount restriction control of the camera module 3 will be specifically described.

(Camera module shake correction amount limit control)
4 and 5 are conceptual diagrams for explaining shake correction amount restriction control of the camera module 3 in the photographing optical device 1 shown in FIG. FIG. 6 is a flowchart showing an example of a flow of shake correction amount restriction control of the camera module 3 of the photographing optical device 1 shown in FIG.

  As shown in FIG. 4, when the intersection point between the front-rear direction (Y direction) and the left-right direction (X direction) when viewed from the up-down direction is the origin O, the limit amount storage unit 21 of the control unit 10 stores the up-down direction. Of the camera module 3 at the reference position when viewed from above (that is, the camera module 3 when the direction of the optical axis L coincides with the vertical direction) The first correction limiting amount PL0 for electrically limiting the shake correction amount to the other of the camera, the shake correction amount of the camera module 3 at the reference position in one of the left and right directions, and the shake correction to the other in the left and right directions. A second correction limit amount YL0 for electrically limiting the amount is stored. In the present embodiment, the first correction limit amount PL0 and the second correction limit amount YL0 are equal. Mechanically, the origin O coincides with the fulcrum 12 when viewed from above and below.

  Further, assuming that the direction tilted with respect to the front-rear direction and the left-right direction when viewed from the up-down direction is an oblique direction, the limit amount storage unit 21 of the control unit 10 stores an arbitrary value of the camera module 3 at the reference position. An oblique correction limit amount for electrically limiting the shake correction amount to one of the oblique directions and the shake correction amount to the other of the oblique directions is stored. As shown in FIG. 4, in this embodiment, when viewed from the up and down direction, a square-shaped virtual square S having the origin O as the center and the diagonal direction in the X direction and the Y direction by the set of oblique correction limit amounts. The oblique correction limit amount is set so that is formed. Further, in this embodiment, the virtual circle C having the origin O as the center and the radius of the first correction limit amount PL0 and the second correction limit amount YL0 is inscribed in the virtual square S when viewed from above and below. An oblique correction limit is set. In the following description, the intersection of the front-rear direction or the left-right direction and the virtual square S (that is, the intersection of the Y axis and the virtual square S in FIG. 4 or the intersection of the X axis and the virtual square S) and the origin O Let the distance be GL.

  In the photographic optical device 1, when a change in the inclination of the optical axis L is detected by the inclination detection mechanism 7, the control unit 10 firstly looks from the vertical direction based on the detection result of the inclination detection mechanism 7. A shake correction direction (for example, a direction indicated by an angle θ in FIGS. 4 and 5) which is a shake correction direction of the camera module 3 is specified, and a target shake correction amount in the shake correction direction θ is calculated (step S1). ).

  When viewed from the up and down direction, the shake correction amount in the front-rear direction of the target shake correction amount calculated in step S1 (the magnitude of the target shake correction amount in the front-rear direction) is Pt1, and the shake in the left-right direction of the target shake correction amount is If the correction amount (the left-right direction magnitude of the target shake correction amount) is Yt1, then the control unit 10 determines whether or not the sum of Pt1 and Yt1 is greater than GL (step S2). That is, in step S2, the control unit 10 determines whether or not the target shake correction amount calculated in step S1 is larger than the oblique correction limit amount in the shake correction direction θ when viewed from the vertical direction.

As shown in FIGS. 4 and 5A, when the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction θ (that is, when the sum of Pt1 and Yt1 is larger than GL), the control unit No. 10 corrects the target shake correction amount so that the oblique correction limit amount and the target shake correction amount in the shake correction direction θ coincide with each other to obtain a first target shake correction amount in the shake correction direction θ (step S3). Specifically, when viewed from above and below, the first target shake correction amount in the front-rear direction shake correction amount (the size in the front-rear direction of the first target shake correction amount) is defined as the first shake correction component Pt. When the shake correction amount in the left and right direction of one target shake correction amount (the size in the left and right direction of the first target shake correction amount) is the third shake correction component Yt, the control unit 10 in step S3, ) And (2), the first shake correction component Pt and the third shake correction component Yt are calculated, and the shake correction amount composed of the first shake correction component Pt and the third shake correction component Yt is calculated as the shake correction direction θ. The first target shake correction amount at.
Pt = GL × (Pt1 / (Pt1 + Yt1)) (1)
Yt = GL × (Yt1 / (Pt1 + Yt1)) (2)
Note that Pt and Yt shown in the equations (1) and (2) are the intersections of the following two equations, as shown in FIG. 4, for example, and can be obtained by solving the following simultaneous equations.
Y = -X + GL
Y = (Pt1 / Yt1) × X

  On the other hand, as shown in FIGS. 5B and 5C, when the target shake correction amount is equal to or less than the oblique correction limit amount in the shake correction direction θ (that is, the sum of Pt1 and Yt1 is equal to or less than GL. ), The control unit 10 directly uses the target shake correction amount calculated in step S1 as the first target shake correction amount in the shake correction direction θ (step S4). That is, the control unit 10 uses Pt1 as it is as the first shake correction component Pt and Yt1 as it is as the third shake correction component Yt, and the shake correction amount including the first shake correction component Pt and the third shake correction component Yt. Is the first target shake correction amount in the shake correction direction θ.

  When the first target shake correction amount is specified in step S3 or step S4 (that is, when the first shake correction component Pt and the third shake correction component Yt are specified), the control unit 10 thereafter It is determined whether or not the shake correction component Pt is larger than the first correction limit amount PL0 (step S5). As shown in FIG. 5B, when the first shake correction component Pt is larger than the first correction limit amount PL0, the control unit 10 corrects the first shake correction component Pt to the first correction limit amount PL0. The second shake correction component PtL is set (step S6). On the other hand, as shown in FIGS. 4, 5A, and 5C, when the first shake correction component Pt is equal to or less than the first correction limit amount PL0, the control unit 10 controls the first shake correction component Pt. Is directly used as the second shake correction component PtL (step S7).

  When the second shake correction component PtL is specified in step S6 or step S7, the control unit 10 thereafter determines whether or not the third shake correction component Yt is larger than the second correction limit amount YL0 (step). S8). As shown in FIG. 5A, when the third shake correction component Yt is larger than the second correction limit amount YL0, the control unit 10 corrects the third shake correction component Yt to the second correction limit amount YL0. The fourth shake correction component YtL is set (step S9). On the other hand, as shown in FIG. 4, FIG. 5B and FIG. 5C, when the second shake correction component Yt is equal to or smaller than the second correction limit amount YL0, the control unit 10 controls the second shake correction component Yt. Is directly used as the fourth shake correction component YtL (step S10).

  Thereafter, the control unit 10 sets the second shake correction component PtL specified in step S6 or step S7 as the final shake correction amount in the front-rear direction, and sets the fourth shake correction component YtL specified in step S9 or step S10 in the left-right direction. The final shake correction amount is determined as the actual shake correction amount of the camera module 3 (step S11). Thereafter, the control unit 10 drives the first swing mechanism 14 and the second swing mechanism 15 based on the actual shake correction amount determined in step S11 and the shake correction direction θ specified in step S1. The shake of the camera module 3 is corrected (step S12).

  In step S1, based on the detection result of the tilt detection mechanism 7, for example, when the target shake correction amount in the shake correction direction θ is calculated as shown in FIG. 4, before and after being specified in step S11. The final shake correction amount in the direction is Pt shown in FIG. 4, and the final shake correction amount in the left-right direction is Yt shown in FIG. Further, in step S1, when the target shake correction amount in the shake correction direction θ is calculated based on the detection result of the tilt detection mechanism 7, for example, as shown in FIG. The final shake correction amount in the front-rear direction is Pt shown in FIG. 5A, and the final shake correction amount in the left-right direction is YL0. Furthermore, if the target shake correction amount in the shake correction direction θ is calculated based on the detection result of the tilt detection mechanism 7 in step S1, for example, as shown in FIG. 5B, it is specified in step S11. The final shake correction amount in the front-rear direction is PL0, and the final shake correction amount in the left-right direction is Yt1. Furthermore, when the target shake correction amount in the shake correction direction θ is calculated based on the detection result of the tilt detection mechanism 7 in step S1, for example, as shown in FIG. 5C, in step S11. The specified final shake correction amount in the front-rear direction is Pt1, and the final shake correction amount in the left-right direction is Yt1. Further, when the shake correction direction θ specified in step S1 matches the front-rear direction, the left-right shake correction amount Yt1 of the target shake correction amount becomes 0 (zero), and the shake correction direction θ matches the left-right direction. In this case, the shake correction amount Pt1 in the front-rear direction of the target shake correction amount is 0 (zero).

  Step S1 of this embodiment is a target shake correction amount calculation step, step S11 is a shake correction amount determination step, and step S12 is a shake correction step. In the present embodiment, the first correction step is configured by steps S2 to S4, and the second correction step is configured by steps S5 to S10. In addition, as shown in FIG. 4, in this embodiment, when viewed from the up-down direction, the two first straight lines that pass through each of the two intersections of the virtual circle C and the front-rear direction and are parallel to the left-right direction. An octagonal region is defined by LN1, two second straight lines LN2 that pass through each of the two intersections of the virtual circle C and the left-right direction and are parallel to the front-rear direction, and a part of the virtual square S. This octagonal region is a swinging region where the camera module 3 swings. In the present embodiment, a regular octagonal region is defined by the two first straight lines LN1, the two second straight lines LN2, and a part of the virtual square S.

(Main effects of this form)
As described above, in this embodiment, the shake correction amount of the camera module 3 in the front-rear direction and the left-right direction is restricted, and the shake correction amount of the camera module 3 in the oblique direction is restricted. Therefore, in this embodiment, even if the support body 4 is downsized in the oblique direction in addition to the front-rear direction and the left-right direction, the camera module 3 side member and the support body 4 side member when the camera module 3 swings Can be prevented. Therefore, in this embodiment, even if the photographic optical device 1 is downsized in a direction substantially orthogonal to the direction of the optical axis L, the camera module 3 side member when the camera module 3 swings and the support 4 side Contact with the member can be prevented. Further, in this embodiment, since the shake correction amount of the camera module 3 in the front-rear direction, the left-right direction, and the oblique direction is limited, the current consumption of the driving coils 16 and 18 can be suppressed.

  In this embodiment, when the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction θ, the control unit 10 matches the oblique correction limit amount and the target shake correction amount in the shake correction direction θ in step S3. After correcting the target shake correction amount to be the first target shake correction amount in the shake correction direction θ, it is determined whether or not the first shake correction component Pt is larger than the first correction limit amount PL0. When the first shake correction component Pt is larger than the first correction limit amount PL0, the first shake correction component Pt is corrected to the first correction limit amount PL0 to be the second shake correction component PtL, and the third shake It is determined whether or not the correction component Yt is larger than the second correction limit amount YL0, and if the third shake correction component Yt is larger than the second correction limit amount YL0, the third shake correction component Yt is second corrected. To limit YL0 Correct and are the fourth shake correction component YTL. Therefore, in the present embodiment, it is possible to prevent a deviation between the shake correction direction θ of the camera module 3 specified based on the detection result of the tilt detection mechanism 7 and the actual shake correction direction of the camera module 3. Even if the shake correction direction θ of the camera module 3 specified based on the detection result of the tilt detection mechanism 7 and the actual shake correction direction of the camera module 3 are shifted, the amount of shift is calculated. It becomes possible to make it smaller.

  That is, when the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction θ, first, as shown by the two-dot chain arrow in FIG. It is determined whether or not it is larger than the first correction limit amount PL0. If Pt1 is larger than the first correction limit amount PL0, Pt1 is corrected to the first correction limit amount PL0 and the target shake correction amount is determined in the left-right direction. It is determined whether or not the shake correction amount Yt1 is greater than the second correction limit amount YL0, and if Yt1 is greater than the second correction limit amount YL0, after correcting Yt1 to the second correction limit amount YL0, It is determined whether or not the corrected shake correction amount is larger than the oblique correction limit amount. If the corrected shake correction amount is larger than the oblique correction limit amount, the corrected shake correction amount is oblique. Correction limit The shake correction amount after this correction is corrected so as to match, and Pt ′ shown in FIG. 4 is used as the final shake correction amount in the front-rear direction and Yt ′ is the final shake correction amount in the left-right direction. Is determined as the actual shake correction amount, the shake correction direction θ of the camera module 3 specified based on the detection result of the tilt detection mechanism 7 and the actual shake correction direction of the camera module 3 deviate from each other. In this embodiment, this shift does not occur. Therefore, in this embodiment, it is possible to perform an appropriate shake correction operation of the camera module 3.

  Further, when the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction θ, first, as shown by the two-dot chain line arrow in FIG. It is determined whether or not the amount Pt1 is larger than the first correction limit amount PL0. If Pt1 is larger than the first correction limit amount PL0, Pt1 is corrected to the first correction limit amount PL0 and the target shake correction amount. It is determined whether or not the left and right shake correction amount Yt1 is larger than the second correction limit amount YL0. If Yt1 is larger than the second correction limit amount YL0, Yt1 is corrected to the second correction limit amount YL0. Later, when it is determined whether or not the shake correction amount after the correction is larger than the oblique correction limit amount, the shake correction direction θ of the camera module 3 specified based on the detection result of the tilt detection mechanism 7, Camera model The amount of deviation of the joule 3 from the actual shake correction direction increases, but in this embodiment, the amount of deviation can be reduced. Therefore, in this embodiment, it is possible to perform an appropriate shake correction operation of the camera module 3.

  In the present embodiment, when the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction θ, the control unit 10 performs the first shake correction component Pt and the third shake correction component Pt based on the above formulas (1) and (2). The shake correction component Yt is calculated, and the shake correction amount composed of the first shake correction component Pt and the third shake correction component Yt is set as the first target shake correction amount in the shake correction direction θ. Therefore, in the present embodiment, it is possible to calculate the first shake correction component Pt and the third shake correction component Yt by a simple calculation. Therefore, in this embodiment, it is possible to reduce the arithmetic processing in the control unit 10.

  In this embodiment, the virtual circle C is inscribed in the virtual square S when viewed from above and below, and the length of one side of the virtual square S is equal to the diameter of the virtual circle C. Therefore, in this embodiment, it is possible to further limit the shake correction amount of the camera module 3 in the oblique direction as compared with the case where the length of one side of the virtual square S is longer than the diameter of the virtual circle C. Become. Therefore, in this embodiment, it is possible to further reduce the size of the photographic optical device 1 in the oblique direction as compared with the case where the length of one side of the virtual square S is longer than the diameter of the virtual circle C. Become.

(Other embodiments)
The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited to this, and various modifications can be made without departing from the scope of the present invention.

  In the embodiment described above, after step S1, there are provided a step of determining whether or not the shake correction direction θ matches the front-rear direction and a step of determining whether or not the shake correction direction θ matches the left-right direction. Also good. In this case, when the shake correction direction θ does not coincide with the front-rear direction and the shake correction direction θ does not coincide with the left-right direction, the process proceeds to step S2. That is, if the shake correction direction θ is an oblique direction, the process may proceed to step S2. When the shake correction direction θ coincides with the front-rear direction, the control unit 10 determines that the first correction limit amount if the shake correction amount Pt1 in the front-rear direction of the target shake correction amount is larger than the first correction limit amount PL0. If PL0 is the second shake correction component PtL and Pt1 is equal to or smaller than the first correction limit PL0, Pt1 may be the second shake correction component PtL. When the shake correction direction θ matches the left-right direction, the control unit 10 determines that the second correction limit amount if the left-right shake correction amount Yt1 of the target shake correction amount is larger than the second correction limit amount YL0. If YL0 is the fourth shake correction component YtL and Yt1 is equal to or less than the second correction limit YL0, Yt1 may be the fourth shake correction component YtL.

  In the embodiment described above, the fourth shake correction component YtL is specified after the second shake correction component PtL is specified in Step S5 to Step S10. In addition to this, for example, in step S5 to step S10, the second shake correction component PtL may be specified after the fourth shake correction component YtL is specified.

  In the embodiment described above, the oblique correction limit amount is set so that the virtual circle C is inscribed in the virtual square S when viewed from the vertical direction. In addition to this, for example, the oblique correction limit amount is set so that a gap is formed between the virtual circle C and the virtual square S when viewed from above and below, so that the virtual circle C is not inscribed in the virtual square S. Also good. Further, the oblique correction limit amount may be set so that the virtual circle C and the virtual square S intersect when viewed from the vertical direction.

  In the embodiment described above, the oblique correction limit amount is set so that a square virtual square S is formed by the set of oblique correction limit amounts. In addition to this, for example, the oblique correction restriction amount may be set so that a circular virtual circle or an elliptical virtual ellipse is formed by the set of oblique correction restriction amounts, The oblique correction limit amount may be set so that a virtual quadrangle having a shape is formed. In the above-described embodiment, the first correction limit amount PL0 and the second correction limit amount YL0 are equal, but the first correction limit amount PL0 and the second correction limit amount YL0 may be different.

  In the embodiment described above, the driving coils 16 and 18 are attached to the support 4, and the driving magnets 17 and 19 are attached to the camera module 3. In addition, for example, the drive coils 16 and 18 may be attached to the camera module 3, and the drive magnets 17 and 19 may be attached to the support 4. In the above-described embodiment, the photographing optical device 1 is formed so that the shape when viewed from the optical axis direction is a substantially square shape. However, the photographing optical device 1 is viewed from the optical axis direction. The shape at the time may be formed into another substantially quadrangular shape such as a substantially rectangular shape, or the shape when viewed from the optical axis direction may be a polygonal shape other than the quadrangle. Further, the photographing optical device 1 may be formed so that the shape when viewed from the optical axis direction is substantially circular or elliptical.

DESCRIPTION OF SYMBOLS 1 Optical device for imaging | photography 3 Camera module 4 Support body 7 Inclination detection mechanism 10 Control part 14 1st rocking mechanism 15 2nd rocking mechanism 21 Limit amount memory | storage part C Virtual circle L Optical axis LN1 1st straight line LN2 2nd straight line O Origin PL0 First correction limit amount Pt First shake correction component PtL Second shake correction component S Virtual square S1 Target shake correction amount calculation step S2 to S4 First correction step S5 to S10 Second correction step S11 Shake correction amount determination step S12 Shake correction step X Left / right direction (second direction)
Y Longitudinal direction (first direction)
YL0 Second correction limit amount Yt Third shake correction component YtL Fourth shake correction component Z Vertical direction (reference direction)
θ Shake correction direction

Claims (5)

A camera module having a lens and an image sensor; and a support that supports the camera module in a swingable manner;
When the direction of the optical axis of the lens when the camera module is at a predetermined reference position with respect to the support is defined as a reference direction, the predetermined first direction orthogonal to the reference direction is set as the axis direction of oscillation. A first swing mechanism for correcting the shake of the camera module by swinging the camera module so that the optical axis of the lens is tilted; and swinging in a second direction orthogonal to the reference direction and the first direction. A second swing mechanism for correcting the shake of the camera module by swinging the camera module so that the optical axis of the lens tilts as an axial direction, and a tilt detection mechanism for detecting a change in the tilt of the camera module And a controller that is connected to the tilt detection mechanism and drives the first swing mechanism and the second swing mechanism,
When the direction inclined with respect to the first direction and the second direction when viewed from the reference direction is an oblique direction, the control unit is at the reference position when viewed from the reference direction. When the camera module is viewed from the reference direction and a first correction limit amount for electrically limiting a shake correction amount in one of the first directions and a shake correction amount in the other of the first direction. A second correction limit amount for electrically limiting a shake correction amount in one of the second directions and a shake correction amount in the other of the second direction of the camera module at the reference position; Oblique correction for electrically limiting the shake correction amount to one of the oblique directions and the shake correction amount to the other of the oblique directions of the camera module at the reference position when viewed from the reference direction The limit amount is remembered ,
The controller is
Based on the detection result in the tilt detection mechanism, the shake correction direction of the camera module when viewed from the reference direction is specified and a target shake correction amount in the shake correction direction is calculated,
When the shake correction direction is at least the oblique direction, when the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction when viewed from the reference direction, the oblique in the shake correction direction. The target shake correction amount is corrected so that the correction limit amount and the target shake correction amount coincide with each other to be the first target shake correction amount in the shake correction direction, and the target shake correction amount is in the shake correction direction. If the oblique correction limit amount or less, the target shake correction amount is used as the first target shake correction amount in the shake correction direction as it is,
If the first shake correction component that is the shake correction amount in the first direction of the first target shake correction amount is larger than the first correction limit amount when viewed from the reference direction, the first shake correction component. Is corrected to the first correction limit amount to be a second shake correction component, and if the first shake correction component is equal to or less than the first correction limit amount, the first shake correction component is used as it is as the second shake correction component. ,
If a third shake correction component, which is a shake correction amount in the second direction of the first target shake correction amount, is larger than the second correction limit amount when viewed from the reference direction, the third shake correction component. Is corrected to the second correction limit amount to be a fourth shake correction component, and if the third shake correction component is less than or equal to the second correction limit amount, the third shake correction component is directly used as the fourth shake correction component. ,
The shake correction amount having the second shake correction component as the final shake correction amount in the first direction and the fourth shake correction component as the final shake correction amount in the second direction is determined as the actual shake correction amount of the camera module. And
Based on the determined actual shake correction amount and the shake correction direction, the first swing mechanism and the second swing mechanism are driven to correct the shake of the camera module. Optical device. If the origin is the intersection of the first direction and the second direction when viewed from the reference direction, the origin is centered by the set of oblique correction limit amounts when viewed from the reference direction. A square virtual square having a diagonal direction between the first direction and the second direction is formed,
When viewed from the reference direction, the first shake correction component is Pt, the third shake correction component is Yt, the target shake correction amount in the first direction is Pt1, and the target shake When the shake correction amount in the second direction of the correction amount is Yt1, and the distance between the intersection of the first direction or the second direction and the virtual square and the origin is GL,
If the target shake correction amount is larger than the oblique correction limit amount in the shake correction direction when viewed from the reference direction, the control unit calculates the first shake correction component Pt and the first shake correction component Pt based on the following calculation formula: The photographic optical device according to claim 1, wherein the third shake correction component Yt is calculated.
Pt = GL × (Pt1 / (Pt1 + Yt1))
Yt = GL × (Yt1 / (Pt1 + Yt1)) The first correction limit amount and the second correction limit amount are equal,
When viewed from the reference direction, a virtual circle centered on the origin and having a radius of the first correction limit amount and the second correction limit amount is inscribed in the virtual square. Item 3. An optical device for photographing according to Item 2. When viewed from the reference direction, two first straight lines that pass through each of the two intersections of the virtual circle and the first direction and are parallel to the second direction, the virtual circle, and the first circle An octagonal region is defined by two second straight lines passing through each of two intersections with two directions and parallel to the first direction, and a part of the virtual square,
4. The photographing optical apparatus according to claim 3, wherein the octagonal region is a swinging region in which the camera module swings. A camera module having a lens and an imaging device;
A support for swingably supporting the camera module;
When the direction of the optical axis of the lens when the camera module is at a predetermined reference position with respect to the support is defined as a reference direction, the predetermined first direction orthogonal to the reference direction is set as the axis direction of oscillation. A first swing mechanism for correcting shake of the camera module by swinging the camera module so that an optical axis of the lens is tilted;
A second swing that corrects the shake of the camera module by swinging the camera module so that the optical axis of the lens is tilted with a second direction orthogonal to the reference direction and the first direction as a swing axial direction. Dynamic mechanism,
An inclination detection mechanism for detecting a change in inclination of the camera module;
When the direction tilted with respect to the first direction and the second direction when viewed from the reference direction is an oblique direction, the camera module at the reference position when viewed from the reference direction, A first correction limit amount for electrically limiting a shake correction amount in one direction of the first direction and a shake correction amount in the other direction of the first direction, and the reference position when viewed from the reference direction. A second correction limit amount for electrically limiting a shake correction amount in one of the second directions and a shake correction amount in the other of the second direction of the camera module, as viewed from the reference direction. Sometimes, the camera module at the reference position stores the amount of shake correction to one of the oblique directions and the amount of oblique correction to electrically restrict the amount of shake correction to the other of the oblique directions. Limit amount storage A method of controlling a photographic optical device comprising,
A target shake correction amount calculating step of specifying a shake correction direction of the camera module when viewed from the reference direction based on a detection result of the tilt detection mechanism and calculating a target shake correction amount in the shake correction direction;
When the shake correction direction specified in the target shake correction amount calculating step is at least the oblique direction, the target shake correction amount is greater than the oblique correction limit amount in the shake correction direction when viewed from the reference direction. If larger, the target shake correction amount calculated in the target shake correction amount calculation step is corrected so that the oblique correction limit amount and the target shake correction amount in the shake correction direction coincide with each other, and the first target shake is corrected. If the target shake correction is equal to or less than the oblique correction limit amount in the shake correction direction, the target shake correction amount calculated in the target shake correction amount calculation step is used as it is as the first target shake correction amount. A first correction step,
If the first shake correction component that is the shake correction amount in the first direction of the first target shake correction amount is larger than the first correction limit amount when viewed from the reference direction after the first correction step. , Correcting the first shake correction component to the first correction limit amount to be a second shake correction component, and if the first shake correction component is equal to or less than the first correction limit amount, the first shake correction component is The second shake correction component is used as it is, and when viewed from the reference direction, the third shake correction component that is the shake correction amount in the second direction of the first target shake correction amount is greater than the second correction limit amount. Is larger, the third shake correction component is corrected to the second correction limit amount to be a fourth shake correction component, and if the third shake correction component is equal to or smaller than the second correction limit amount, the third shake correction component is corrected. The second correction component is used as the fourth shake correction component as it is. And a positive step,
The shake correction amount having the second shake correction component as the final shake correction amount in the first direction and the fourth shake correction component as the final shake correction amount in the second direction is determined as the actual shake correction amount of the camera module. A shake correction amount confirmation step to be performed;
Based on the actual shake correction amount determined in the shake correction amount determination step and the shake correction direction specified in the target shake correction amount calculation step, the first swing mechanism and the second swing mechanism are And a shake correction step of driving and correcting shake of the camera module.

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