Optical Unit with Jitter Correction Function and Portable Device Including the Same

Abstract

An optical unit with a shake correction function and a portable device including the optical unit can suppress the enlargement of the optical unit due to the need to ensure the length of a flexible printed circuit board connecting the movable module to an external device, etc., even if the substrate on which the image sensor of the movable module is mounted is increased due to the increase in the size of the image sensor. The optical unit with a shake correction function of the present invention includes a movable module and a fixed body. The movable module has a lens and is supported on the fixed body so as to be movable in a direction orthogonal to the optical axis of the lens. The fixed body surrounds the movable module from the outer periphery. The movable module includes a first substrate and a second substrate whose thickness direction is consistent with the extension direction of the optical axis. The image sensor is provided on the first substrate. The second substrate is electrically connected to the first substrate by being stacked on the first substrate on the image side. The second substrate has an outer shape smaller than the first substrate when viewed along the optical axis of the lens. A flexible printed circuit board extends from the outer periphery of the second substrate.

Description

Technical Field

[0001] The present invention relates to an optical unit with a shake correction function and a portable device comprising the optical unit with a shake correction function. Background Art

[0002] In the past, there was an optical unit with a shake correction function, which included a movable module and a fixed body, wherein the movable module had a lens and was supported on the fixed body in a manner that allowed it to move in a direction orthogonal to the optical axis of the lens. The fixed body surrounded the movable module from the outer peripheral side, and the movable module had a sensor substrate whose thickness direction was consistent with the extension direction of the optical axis. An image sensor (such as a CCD, etc.) was provided on the sensor substrate, and a flexible printed circuit board for connecting to external equipment, etc. was led out from the outer peripheral surface of the sensor substrate.

[0003] However, in the aforementioned optical unit with a shake correction function, as the number of image sensor pixels increases, the size of the image sensor tends to increase, and the sensor substrate also tends to increase in size, potentially protruding outward from the main body of the movable module, where the lens is located. Consequently, the length of the flexible printed circuit board (FPC) from the sensor substrate to the securing location (e.g., a hole or slit in the wall of the fixed body that surrounds the movable module) or the connection target (e.g., a control circuit board of a host device such as a mobile phone on which the optical unit is mounted) becomes shorter, reducing the flexibility of the FPC. This can easily restrict the movement of the movable module relative to the fixed body, thereby affecting the shake correction effect. If the FPC is maintained at its original length to ensure its flexibility, the fixed body must be increased in size, which results in an increase in the size of the optical unit and, in turn, the host device on which the optical unit is mounted. Summary of the Invention

[0004] The present invention has been completed in view of the above-mentioned problems, and its purpose is to provide an optical unit with a shake correction function and a portable device including the optical unit. Even if the substrate on which the image sensor of the movable module is provided is increased due to the increase in the size of the image sensor, the optical unit can be prevented from being enlarged due to the need to determine the length of the flexible printed circuit board connecting the movable module to an external device, etc.

[0005] In order to achieve the above-mentioned objectives, the present invention provides an optical unit with a shake correction function, including a movable module and a fixed body, the movable module having a lens and being supported on the fixed body in a manner that allows it to move in a direction orthogonal to the optical axis of the lens, the fixed body surrounding the movable module from the outer peripheral side, wherein the movable module includes: a first substrate, the thickness direction of the first substrate is consistent with the extension direction of the optical axis, and an image sensor is provided on the first substrate; and a second substrate, the thickness direction of the second substrate is consistent with the extension direction of the optical axis, the second substrate is electrically connected to the first substrate in a manner of being stacked on the first substrate on the image side, and the outer shape when viewed along the optical axis of the lens is smaller than that of the first substrate, and a flexible printed circuit board is led out from the outer peripheral surface of the second substrate.

[0006] Here, “outer peripheral side” and “circumferential direction” are both based on the optical axis of the lens.

[0007] According to the optical unit with a shake correction function of the present invention, the movable module includes: a first substrate, the thickness direction of the first substrate is consistent with the extension direction of the optical axis, and the image sensor is provided on the first substrate; and a second substrate, the thickness direction of the second substrate is consistent with the extension direction of the optical axis, the second substrate is electrically connected to the first substrate in a manner of being stacked on the first substrate on the image side, and the outer shape of the second substrate when viewed along the optical axis of the lens is smaller than that of the first substrate, and a flexible printed circuit board is led out from the outer peripheral surface of the second substrate. Therefore, even if the first substrate is increased due to the increase in the size of the image sensor and the distance between the outer peripheral surface of the first substrate and the fixed body is reduced, it is easy to ensure the length of the flexible printed circuit board that connects the movable module to external equipment, etc., thereby suppressing the optical unit from being enlarged due to ensuring that the flexible printed circuit board has sufficient flexibility.

[0008] Furthermore, in the optical unit with a shake correction function of the present invention, the flexible printed circuit board preferably includes a radially extending portion and a circumferentially extending portion, wherein the radially extending portion extends from the outer peripheral surface of the second substrate toward the outer peripheral side, and the circumferentially extending portion extends circumferentially from the outer peripheral end of the radially extending portion.

[0009] Here, the so-called "radial extension portion" is not strictly required to extend in the radial direction centered on the optical axis of the lens, as long as it extends from the optical axis side of the lens toward the peripheral side as a whole. The so-called "circumferential extension portion" is not strictly required to extend in the circumferential direction centered on the optical axis of the lens, as long as it extends in the circumferential direction centered on the optical axis of the lens as a whole.

[0010] According to the optical unit with a shake correction function of the present invention, the flexible printed circuit board includes a radial extension portion and a circumferential extension portion. The radial extension portion extends from the outer peripheral surface of the second substrate toward the outer peripheral side, and the circumferential extension portion extends circumferentially from the end portion on the outer peripheral side of the radial extension portion. Therefore, compared with the case where the circumferential extension portion is not included, the length of the flexible printed circuit board connecting the movable module to the external device, etc. is increased, and it is easier to avoid the movement of the movable module relative to the fixed body being restricted by the flexible printed circuit board and affecting the shake correction.

[0011] In addition, in the optical unit with shake correction function of the present invention, it is preferred that the second substrate is a regular polygon, the optical axis of the lens passes through the center of the regular polygon, the radial extension portion extends from a position on the circumferential side of the side of the regular polygon that is closer to the midpoint of the side, and the circumferential extension portion extends from the end portion on the outer peripheral side of the radial extension portion toward the other side in the circumferential direction.

[0012] According to the optical unit with a shake correction function of the present invention, the second substrate is a regular polygon, the optical axis of the lens passes through the center of the regular polygon, the radial extension portion extends from a position on one side of the side of the regular polygon that is closer to the midpoint of the side in the circumferential direction, and the circumferential extension portion extends from the end portion on the outer peripheral side of the radial extension portion toward the other side in the circumferential direction. Therefore, it is easier to increase the length of the flexible printed circuit board connecting the movable module to external equipment, etc., and it is easier to avoid the movement of the movable module relative to the fixed body being restricted by the flexible printed circuit board and affecting the shake correction.

[0013] Furthermore, in the optical unit with a shake correcting function of the present invention, it is preferable that a plurality of the flexible printed circuit boards are provided at equal angular intervals around the optical axis of the lens.

[0014] According to the optical unit with a shake correction function of the present invention, a plurality of flexible printed circuit boards are arranged at equal angles around the optical axis of the lens, thereby easily ensuring the force balance of the movable module, facilitating more precise lens driving and shake correction.

[0015] Furthermore, in the optical unit with a shake correction function of the present invention, it is preferred that at least one of the plurality of flexible printed circuit boards is used to transmit an output signal of the image sensor, and the plurality of flexible printed circuit boards have the same shape.

[0016] According to the optical unit with a shake correction function of the present invention, the shapes of the plurality of flexible printed circuit boards are the same, and thus the manufacturing cost can be easily reduced.

[0017] Furthermore, in the optical unit with a shake correcting function of the present invention, it is preferable that the second substrate is electrically connected to the first substrate by soldering.

[0018] According to the optical unit with a shake correction function of the present invention, the second substrate is electrically connected to the first substrate by soldering, and therefore, reliability of the electrical connection between the first substrate and the second substrate can be easily ensured.

[0019] In addition, in the optical unit with shake correction function of the present invention, it is preferred that the fixed body includes a fixed body shell, the fixed body shell forms a storage cavity for accommodating the movable module, the movable module includes a movable module shell, the lens is accommodated in the movable module shell, the first substrate is fixed to the image side of the movable module shell, and the outer shape when observed along the optical axis of the lens is consistent with the outer shape of the movable module shell, the image sensor is provided on the surface of the object side of the first substrate, and the second substrate is electrically connected to the central part of the first substrate through a ball grid array package (BGA).

[0020] In addition, in the optical unit with a shake correction function of the present invention, it is preferred to include a shake correction mechanism, which includes: a magnet, which is arranged on one side of the movable module and the fixed body; and a coil, which is arranged on the other side of the movable module and the fixed body, and cooperates with the magnet to make the movable module move relative to the fixed body.

[0021] Furthermore, in order to achieve the above-mentioned object, the present invention provides a portable device comprising any one of the above-mentioned optical units with a shake correction function.

[0022] In addition, the portable device of the present invention preferably includes a third substrate, which is located on the image side of the optical unit, and the flexible printed circuit board for transmitting the output signal of the image sensor is electrically connected to the third substrate through a connector or soldering at a position closer to the outer periphery than the movable module.

[0023] (Effects of the Invention)

[0024] According to the present invention, the movable module includes: a first substrate, the thickness direction of the first substrate is consistent with the extension direction of the optical axis, and the image sensor is provided on the first substrate; and a second substrate, the thickness direction of the second substrate is consistent with the extension direction of the optical axis, the second substrate is electrically connected to the first substrate in a manner of being stacked on the first substrate on the image side, and the second substrate has an outer shape smaller than the first substrate when viewed along the optical axis of the lens, and a flexible printed circuit board is extended from the outer peripheral surface of the second substrate. Therefore, even if the first substrate is increased in size due to the increase in the size of the image sensor and the distance between the outer peripheral surface of the first substrate and the fixed body is reduced, it is easy to ensure the length of the flexible printed circuit board that connects the movable module to external equipment, etc., thereby suppressing the optical unit from being enlarged due to ensuring sufficient flexibility of the flexible printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a perspective view schematically showing the appearance of an optical unit with a shake correction function according to an embodiment of the present invention.

[0026] Figure 2 FIG. 1 is a side sectional view schematically showing an optical unit with a shake correction function according to an embodiment of the present invention, showing a circuit board of a host device on which the optical unit is mounted.

[0027] Figure 3 This is an exploded perspective view schematically showing a movable module and a flexible printed circuit board in an optical unit with a shake correction function according to an embodiment of the present invention.

[0028] Figure 4 It is a bottom view schematically showing a movable module and a flexible printed circuit board in the optical unit with a shake correction function according to an embodiment of the present invention.

[0029] Figure 5 This is a bottom view schematically showing a state in which a second substrate is removed from a movable module in an optical unit with a shake correction function according to an embodiment of the present invention.

[0030] Figure 6 This is a plan view schematically showing a second substrate and a flexible printed circuit board of a movable module in an optical unit with a shake correction function according to an embodiment of the present invention.

[0031] (Explanation of Symbols)

[0032] 1 Optical unit with shake correction function

[0033] 100 movable modules

[0034] 110 first substrate

[0035] 120 second substrate

[0036] 130 Image Sensor

[0037] 140 lens units

[0038] 141 Lens

[0039] 190 movable module housing

[0040] 191 top cover

[0041] 1911 Window

[0042] 193 cylindrical part

[0043] 200 fixed body

[0044] 290 fixed body shell

[0045] 291 top cover

[0046] 2911 Window

[0047] 292 base

[0048] 293 Cylindrical part

[0049] 300 Flexible Printed Circuit Board

[0050] 310 radial extension

[0051] 320 Circumferential extension

[0052] CB third substrate

[0053] L Optical axis of lens DETAILED DESCRIPTION

[0054] Next, combine Figure 1 The optical unit with a shake correction function according to an embodiment of the present invention is described. Figure 1 1 is a perspective view schematically showing the appearance of an optical unit with a shake correction function according to an embodiment of the present invention. Figure 2 is a side sectional view schematically showing an optical unit with a shake correction function according to an embodiment of the present invention, wherein a circuit board of a host device on which the optical unit is mounted is shown. Figure 3 is an exploded perspective view schematically showing a movable module and a flexible printed circuit board in an optical unit with a shake correction function according to an embodiment of the present invention. Figure 4 FIG2 is a bottom view schematically showing a movable module and a flexible printed circuit board in an optical unit with a shake correction function according to an embodiment of the present invention. Figure 5 1 is a bottom view schematically showing a state where the second substrate is removed from the movable module in the optical unit with a shake correction function according to an embodiment of the present invention. Figure 6 This is a plan view schematically showing a second substrate and a flexible printed circuit board of a movable module in an optical unit with a shake correction function according to an embodiment of the present invention.

[0055] Here, for convenience of explanation, three mutually orthogonal directions are set as the X direction, the Y direction, and the Z direction, and one side of the X direction is set as X1, the other side of the X direction is set as X2, one side of the Y direction is set as Y1, the other side of the Y direction is set as Y2, one side of the Z direction is set as Z1, and the other side of the Z direction is set as Z2, and the extension direction of the optical axis L of the lens is set to be consistent with the Z direction, the Z1 direction side is set as the object side, and the Z2 direction side is set as the image side.

[0056] (Overall structure of the optical unit with shake correction function)

[0057] like Figure 1 and Figure 2As shown, the optical unit 1 with a shake correction function includes a movable module 100 and a fixed body 200. The movable module 100 has a lens 141 and is supported by the fixed body 200 in a manner that allows it to move in a direction perpendicular to the optical axis L of the lens 141. The fixed body 200 surrounds the movable module 100 from the outer peripheral side. Figure 2 and Figure 4 As shown, the movable module 100 includes: a first substrate 110, the thickness direction of the first substrate 110 is consistent with the extension direction of the optical axis L, and the image sensor 130 is provided on the first substrate 110; and a second substrate 120, the thickness direction of the second substrate 120 is consistent with the extension direction of the optical axis L, the second substrate 120 is electrically connected to the first substrate 110 in a manner of being stacked on the first substrate 110 on the Z2 direction side (i.e., the image side), and the outer shape when viewed along the optical axis L of the lens 141 is smaller than that of the first substrate 110; and, as shown Figure 2 and Figure 3 As shown, a flexible printed circuit board 300 is led out from the outer peripheral surface of the second substrate 120 .

[0058] Here, if Figure 1 and Figure 2 As shown, the flexible printed circuit board 300 is a circuit board for transmitting output signals of the image sensor, and is led out from the outer peripheral surface of the second substrate 120 toward the outer peripheral side.

[0059] In addition, if Figures 1 to 3 As shown, the movable module 100 includes a movable module housing 190, and the lens 141 is housed in the movable module housing 190. Specifically, the movable module housing 190 is generally in the shape of a rectangular parallelepiped, and has a top cover portion 191 and a cylindrical portion 193. The top cover portion 191 is in the shape of a plate whose thickness direction is consistent with the Z direction. A window portion 1911 is formed in the center of the top cover portion 191. The cylindrical portion 193 extends from the periphery of the top cover portion 191 toward the Z2 direction side, and the first substrate 110 abuts against the end of the cylindrical portion 193 on the Z2 direction side from the Z2 direction side and is fixed to the movable module housing 190, and the first substrate 110 is fixed along the window portion 1911. The outer shape of the mirror 141 when observed along the optical axis L is consistent with the outer shape of the movable module housing 190. The main body of the lens unit 140 including the lens 141 is housed in the storage cavity formed by the top cover portion 191, the cylindrical portion 193 and the first substrate 110. The main body of the lens unit 140 is arranged in the above-mentioned storage cavity in a manner that allows it to move along the Z direction. The lens unit 140 also has a protrusion that extends from the main body of the lens unit 140 in the Z1 direction and protrudes from the window portion 1911.

[0060] In addition, if Figure 2As shown, an image sensor 130 is provided on the surface of the first substrate 110 on the Z1 side. Specifically, the first substrate 110 is substantially square in shape, and the optical axis L of the lens 141 passes through the center of the square. The image sensor 130 is provided at the center of the surface of the first substrate 110 on the Z1 side. The pins of the image sensor 130 are, for example, soldered to pads on the surface of the first substrate 110 on the Z1 side. When viewed along the Z direction, the image sensor 130 is, for example, substantially square in shape, and its size is slightly smaller than that of the first substrate 110.

[0061] In addition, if Figure 2 、 Figure 4 As shown, the second substrate 120 is electrically connected to the first substrate 110 by soldering. Specifically, the second substrate 120 is roughly square, and the optical axis L of the lens 141 passes through the center of the square. The second substrate 120 is electrically connected to the central portion of the first substrate 110 via a ball grid array (BGA).

[0062] In addition, if Figure 3 、 Figure 4 and Figure 6 As shown, the flexible printed circuit board 300 includes a radial extension portion 310 and a circumferential extension portion 320. The radial extension portion 310 extends from the outer peripheral surface of the second substrate 120 toward the outer peripheral side, and the circumferential extension portion 320 extends from the outer peripheral end of the radial extension portion 310 along the circumferential direction. Figure 3 、 Figure 4 and Figure 6 As shown, the radial extension portion 310 extends from the side of the square that is closer to the midpoint of the side in the circumferential direction (for example, Figure 4 The circumferential extension portion 320 extends from the outer peripheral end of the radial extension portion 310 toward the other circumferential side (for example, the clockwise side of the circumferential direction). Figure 4 Furthermore, four flexible printed circuit boards 300 are provided at equal angular intervals with the optical axis L of the lens 141 as the center. Furthermore, the four flexible printed circuit boards 300 have the same shape.

[0063] In addition, if Figure 1As shown, the fixed body 200 includes a fixed body housing 290, which forms a storage chamber for accommodating the movable module 100. Specifically, the fixed body housing 290 is generally rectangular in shape and includes a top cover 291, a base 292, and a cylindrical portion 293. The top cover 291 is in the shape of a plate whose thickness direction is consistent with the Z direction. A window 2911 is formed in the center of the top cover 291 to allow light from an object to pass through and enter the lens 141 of the movable module 100. The base 292 is in the shape of a plate whose thickness direction is consistent with the Z direction and is spaced apart from the top cover 291 on the Z2 direction side. The cylindrical portion 293 connects the outer periphery of the top cover 291 and the outer periphery of the base 292. The top cover 291, the base 292, and the cylindrical portion 293 form a storage chamber for accommodating the movable module 100. In addition, a slit is formed between the cylindrical portion 293 and the base portion 292 for leading the flexible printed circuit board 300 from the above-mentioned storage cavity to the outside. At this slit, the surface of the flexible printed circuit board 300 on the Z1 direction side abuts against the cylindrical portion 293, and the surface of the flexible printed circuit board 300 on the Z2 direction side abuts against the base portion 292, thereby restricting the movement of the flexible printed circuit board 300 in the Z direction.

[0064] In addition, if Figure 2 As shown, after being drawn out of the storage chamber within the fixed body housing 290 through the slit between the cylindrical portion 293 and the base portion 292, the flexible printed circuit board 300 is electrically connected to a third substrate CB of a host device (e.g., a mobile phone or other portable device) mounted on the optical unit 1, for example, at a location on the outer periphery of the movable module 100. Specifically, the third substrate CB is located on the Z1 side of the base portion 292 and is electrically connected to the third substrate CB of the host device mounted on the optical unit 1, for example, by a connector or soldering, at a location on the outer periphery of the optical unit 1.

[0065] In addition, although not shown in the figures, the optical unit 1 with a shake correction function also includes a shake correction mechanism, which includes: a magnet, which is arranged on one side of the movable module 100 and the fixed body 200 (for example, it is arranged on one side of the outer peripheral surface of the movable module 100 and the inner peripheral surface of the fixed body 200); and a coil, which is arranged on the other side of the movable module 100 and the fixed body 200 (for example, it is arranged on the other side of the outer peripheral surface of the movable module 100 and the inner peripheral surface of the fixed body 200), and cooperates with the magnet to make the movable module 100 move relative to the fixed body 200.

[0066] (Main Effects of This Embodiment)

[0067] According to the optical unit 1 with a shake correction function of this embodiment, the movable module 100 includes: a first substrate 110 whose thickness direction coincides with the direction in which the optical axis L extends, and an image sensor 130 is provided on the first substrate 110; and a second substrate 120 whose thickness direction coincides with the direction in which the optical axis L extends. The second substrate 120 is electrically connected to the first substrate 110 so as to be stacked on the first substrate 110 in the Z2 direction. The second substrate 120 has a smaller outer shape than the first substrate 110 when viewed along the optical axis L of the lens 141. The flexible printed circuit board 300 extends from the outer peripheral surface of the second substrate 120. Therefore, even if the first substrate 110 is increased in size due to the increase in the size of the image sensor 130, and the distance between the outer peripheral surface of the first substrate 110 and the fixed body 200 is reduced, it is easy to ensure the length of the flexible printed circuit board 300 for connecting the movable module 100 to external equipment, etc., thereby preventing the optical unit 1 from increasing in size due to ensuring sufficient flexibility of the flexible printed circuit board 300.

[0068] The present invention is described above by way of example with reference to the accompanying drawings. It is apparent that the specific implementation of the present invention is not limited to the above-mentioned embodiments.

[0069] For example, in the above embodiment, the movable module housing 190 is roughly rectangular in shape as a whole, and the fixed body housing 290 is roughly rectangular in shape as a whole, but it is not limited to this. The shapes of the movable module housing 190 and the fixed body housing 290 can be appropriately changed as needed, for example, they can also be formed into a roughly cylindrical shape.

[0070] Furthermore, in the above embodiment, the flexible printed circuit board 300 is a circuit board for transmitting output signals of an image sensor, but the present invention is not limited thereto. The flexible printed circuit board 300 may also be a circuit board for power supply.

[0071] In addition, in the above embodiment, the outer shape of the first substrate 110 when observed along the optical axis L of the lens 141 is consistent with the outer shape of the movable module housing 190, but it is not limited to this. The outer shape of the first substrate 110 when observed along the optical axis L of the lens 141 may also be different from the outer shape of the movable module housing 190, and the sizes of the two may also be different.

[0072] In addition, in the above embodiment, the first substrate 110 is roughly square, the optical axis L of the lens 141 passes through the center of the square, and the image sensor 130 is arranged at the center of the surface on the Z1 direction side of the first substrate 110, but it is not limited to this. The shape and position of the first substrate 110 and the setting position of the image sensor 130 on the first substrate 110 can be appropriately adjusted according to actual conditions.

[0073] In addition, in the above embodiment, the second substrate 120 is roughly square, the optical axis L of the lens 141 passes through the center of the square, and the second substrate 120 is electrically connected to the central portion of the first substrate 110 by means of a ball grid array package (BGA), but is not limited to this. The shape, position of the second substrate 120 and the connection method between the second substrate 120 and the first substrate 110 can be appropriately adjusted according to actual conditions.

[0074] Furthermore, in the above embodiment, the flexible printed circuit board 300 includes the radially extending portion 310 and the circumferentially extending portion 320 , but the present invention is not limited thereto. The flexible printed circuit board 300 may also include only the radially extending portion 310 .

[0075] In addition, in the above embodiment, four flexible printed circuit boards 300 are arranged at equal angles with the optical axis L of the lens 141 as the center, and the four flexible printed circuit boards 300 have the same shape, but this is not limited to this. The number, arrangement and shape of the flexible printed circuit boards 300 can be appropriately set according to actual conditions.

[0076] In addition, in the above embodiment, a slit is formed between the cylindrical portion 293 and the base portion 292 for leading the flexible printed circuit board 300 from the above-mentioned storage cavity to the outside, but it is not limited to this. A slit, hole, etc. for leading the flexible printed circuit board 300 to the outside may be opened on the cylindrical portion 293, and a slit, hole, etc. for leading the flexible printed circuit board 300 to the outside may also be set at other positions.

[0077] It should be understood that within the scope of the present invention, various parts of the embodiments can be freely combined, or various parts of the embodiments can be appropriately modified or omitted.

Claims

1. An optical unit with a shake correction function, comprising a movable module and a fixed body, wherein the movable module has a lens and is supported by the fixed body so as to be movable in a direction perpendicular to the optical axis of the lens, and the fixed body surrounds the movable module from the outer circumference, characterized in that: The movable module comprises: a first substrate, wherein a thickness direction of the first substrate is consistent with an extension direction of the optical axis, and an image sensor is provided on the first substrate; and a second substrate, wherein the thickness direction of the second substrate is consistent with the extension direction of the optical axis, the second substrate is electrically connected to the first substrate in a manner of being stacked on the first substrate on the image side, and the second substrate has an outer shape smaller than the first substrate when viewed along the optical axis of the lens, A flexible printed circuit board is extended from the outer peripheral surface of the second substrate.

2. The optical unit with a shake correction function according to claim 1, wherein: The flexible printed circuit board includes a radially extending portion and a circumferentially extending portion, The radially extending portion extends from the outer peripheral surface of the second substrate toward the outer peripheral side, The circumferentially extending portion extends in the circumferential direction from an outer peripheral end portion of the radially extending portion.

3. The optical unit with a shake correction function according to claim 2, wherein: The second substrate is a regular polygon. The optical axis of the lens passes through the center of the regular polygon, The radially extending portion extends from a position on one side of the regular polygon relative to a midpoint of the side in the circumferential direction. The circumferentially extending portion extends from an outer peripheral end portion of the radially extending portion toward the other side in the circumferential direction.

4. The optical unit with a shake correction function according to claim 1, wherein: A plurality of flexible printed circuit boards are provided at equal angular intervals around the optical axis of the lens.

5. The optical unit with a shake correction function according to claim 4, wherein: At least one of the plurality of flexible printed circuit boards is used to transmit an output signal of the image sensor, The plurality of flexible printed circuit boards have the same shape.

6. The optical unit with a shake correction function according to claim 1, wherein: The second substrate is electrically connected to the first substrate by soldering.

7. The optical unit with a shake correction function according to claim 1, wherein: The fixed body includes a fixed body shell, The fixed body shell forms a receiving cavity for receiving the movable module. The movable module includes a movable module housing, The lens is housed in the movable module housing. The first substrate is fixed to the image side of the movable module housing, and its outer shape when viewed along the optical axis of the lens is consistent with the outer shape of the movable module housing. The image sensor is provided on the object side surface of the first substrate. The second substrate is electrically connected to a central portion of the first substrate via a ball grid array package.

8. The optical unit with a shake correction function according to claim 1, wherein: Including shake correction mechanism, The shake correction mechanism includes: a magnet, the magnet being provided on one of the movable module and the fixed body; and The coil is provided on the other of the movable module and the fixed body and cooperates with the magnet to move the movable module relative to the fixed body.

9. A portable device, characterized in that: An optical unit with a shake correction function comprising the optical unit according to any one of claims 1 to 8.

10. The portable device according to claim 9, wherein: comprising a third substrate, The third substrate is located on the image side of the optical unit, The flexible printed circuit board for transmitting an output signal of the image sensor is electrically connected to the third substrate at a position on the outer peripheral side of the movable module by a connector or soldering.

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