CN212540830U - Optical member driving device, camera device, and electronic apparatus - Google Patents
Optical member driving device, camera device, and electronic apparatus Download PDFInfo
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- CN212540830U CN212540830U CN202022083515.6U CN202022083515U CN212540830U CN 212540830 U CN212540830 U CN 212540830U CN 202022083515 U CN202022083515 U CN 202022083515U CN 212540830 U CN212540830 U CN 212540830U
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Abstract
The utility model provides an optical component drive arrangement, camera device and electronic equipment, FPC is difficult to produce and twists reverse wherein. The optical component driving device is provided with the following components in an XYZ orthogonal coordinate system: an optical member having a lens body, an image sensor, and an FPC electrically connected to the image sensor; and a fixing portion that holds the optical member so as to be capable of tilting about axes in the X and Y directions, the FPC including: a body portion fixing the image sensor; an image sensor connecting part extending outwards from the periphery of the main body part; an external terminal portion having an external terminal on one surface; an external terminal connecting portion extending inward from a peripheral edge of the external terminal portion; and a connecting portion connecting the image sensor connecting portion and the external terminal connecting portion. The direction in which the image sensor connecting portion extends from the body portion and the direction in which the external terminal connecting portion extends from the external terminal are orthogonal.
Description
Technical Field
The utility model relates to an optical component drive arrangement, camera device and electronic equipment for electronic equipment such as smart mobile phone.
Background
In a camera device having a shake correction function, a current is supplied from an external substrate to an image sensor or a shake correction coil via an fpc (flexible Printed circuits). As a document disclosing a technique related to such a camera device, there is patent document 1.
The imaging optical device disclosed in patent document 1 includes: a camera module having a lens and an image pickup element; and a shake correction device for correcting a shake of an optical image formed on the image pickup element through the lens. The shake correction device includes a support body capable of supporting the camera module in a swinging manner; and a swing drive mechanism for swinging the camera module obliquely with respect to the optical axis of the support lens to correct the shake. The FPC connected to the image pickup device is bent 2 times at the lower side of the camera module, and is led out to the outside and fixed.
[ Prior art documents ]
[ patent document ]
[ patent document 1 ] Japanese patent application laid-open No. 2011-257506A
SUMMERY OF THE UTILITY MODEL
[ problem to be solved by the utility model ]
However, in the case of the technique of patent document 1, there is a problem that the FPC is twisted when the camera module is tilted so that the optical axis of the lens is tilted.
The present invention has been made in view of the above problems, and an object of the present invention is to provide an optical component driving device in which the FPC is less likely to twist.
[ MEANS FOR SOLVING PROBLEMS ] to solve the problems
In order to solve the above problem, a preferred optical component driving device according to the present invention includes, in an XYZ orthogonal coordinate system: an optical member having a lens body, an image sensor that converts light incident through the lens body into a signal, and an FPC electrically connected to the image sensor; and a fixing portion that holds the optical member in a manner capable of tilting about axes in the X and Y directions, the FPC including: a body portion fixing the image sensor; an image sensor connecting portion extending outward from a peripheral edge of the main body portion, and an external terminal portion having an external terminal on one surface; an external terminal connecting portion extending inward from a peripheral edge of the external terminal portion, and a connecting portion connecting the image sensor connecting portion and the external terminal connecting portion, wherein a direction in which the image sensor connecting portion extends from the main body portion and a direction in which the external terminal connecting portion extends from the external terminal portion are orthogonal to each other.
In this aspect, the image sensor connecting portion may extend from two or four positions that are point-symmetrical about a center of the image sensor.
The image sensor may further include two connection portions that are symmetrical with respect to a point centered on the center of the image sensor, and the two connection portions may have an L shape.
The main body may have a rectangular shape, and one of the two L-shaped coupling portions may be provided along 2 sides of the rectangular main body, and the other may be provided along the remaining 2 sides of the main body.
The camera device according to another preferred embodiment of the present invention includes the optical member driving device.
The electronic device according to another preferred embodiment of the present invention includes the camera device.
[ Utility model effect ] is provided
The utility model discloses an optical component drive arrangement, in XYZ orthogonal coordinate system, possesses: an optical member having a lens body, an image sensor that converts light incident through the lens body into a signal, and an FPC electrically connected to the image sensor; and a fixing portion holding the optical member so as to be movable in a tilted manner about axes in X and Y directions, the FPC including a main body portion fixing the image sensor, an image sensor connecting portion extending outward from a peripheral edge of the main body portion, an external terminal connecting portion provided with an external terminal on one surface, an external terminal connecting portion extending inward from a peripheral edge of the external terminal portion, and a connecting portion connecting the image sensor connecting portion and the external terminal connecting portion, wherein a direction in which the image sensor connecting portion extends from the main body portion and a direction in which the external terminal connecting portion extends from the external terminal portion are orthogonal to each other. The image sensor connection portion and the external terminal connection portion are easily deformed when they are tilted about a direction orthogonal to the direction in which they extend, but are hardly deformed when they are tilted about a direction parallel to the direction. Therefore, when the movable portion is moved obliquely about one of the X and Y directions, the image sensor connection portion and the external terminal connection portion are more easily deformed, and therefore, are less likely to be twisted. Therefore, the optical member driving device in which the FPC is hard to be twisted can be provided.
Drawings
Fig. 1 is a front view of a smartphone 102 equipped with a camera device 101 including an optical component driving device 100 according to an embodiment of the present invention.
Fig. 2 is a perspective view of the optical component driving apparatus 100 of fig. 1.
Fig. 3 is a perspective view of the optical component driving apparatus 100 of fig. 2 exploded.
Fig. 4 is a perspective view of the cover 1 removed from fig. 2.
Fig. 5 is a perspective view of fig. 4 with the gimbal spring 2 removed.
Fig. 6 is a perspective view of the image sensor section of fig. 3.
Fig. 7 is a perspective view of fig. 6 with the frame 7 removed.
Fig. 8 is a perspective view of the angle change in fig. 4.
Fig. 9 is a perspective view of fig. 2, with the bottom plate 9 removed, as viewed from the inside.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in fig. 1, a camera apparatus 101 including an optical component driving apparatus 100 according to an embodiment of the present invention is housed in a housing of a smartphone 102.
The camera apparatus 101 has an optical member driving apparatus 100. Here, the X axis, the Y axis, and the Z axis are orthogonal to each other by an XYZ orthogonal coordinate system. The direction of the optical axis O of the lens body 130 is parallel to the Z direction in the initial state. Further, the side of the subject viewed from the lens body 130 is the + Z side, which is sometimes referred to as the front side, and the opposite side (the side of the image sensor 190) is the-Z side, which is sometimes referred to as the rear side.
As shown in fig. 3, the optical component driving device 100 includes a housing 1, a gimbal spring 2, an af (auto focus) module 3 as an optical component, four magnets 35, eight coils 4, an FPC5, a holder 6, and a bottom plate 9. The housing 1 and the bottom plate 9 form an outer frame in which the components are housed. Of these parts, the AF module 3 and the four magnets 35 constitute a movable part. The cover 1, the eight coils 4, the FPC5, the holder 6, and the bottom plate 9 constitute a fixing portion. The universal spring 2 connects the movable portion and the fixed portion, and is supported so as to be capable of tilting movement of the movable portion relative to the fixed portion about the axial directions in the X and Y directions. Here, the tilt movement in the axial direction about the X and Y directions also includes a tilt movement in the axial direction about the intermediate direction between the X and Y directions. In the present embodiment, the optical component driving device 100 is a device that performs shake correction by tilting the AF module 3 around the axial direction in the X and Y directions.
The AF module 3 has a lens body 130, a lens driving device, and an image sensor portion. The lens driving device includes a lens body 130 and an actuator (not shown) inside an inner frame body constituted by the inner cover 31 and the base 37. The image sensor unit includes a housing 7, an FPC8, a sensor substrate 191, and an image sensor 190, and is attached to the base 37. The actuator drives the lens body 130 in a direction parallel to the optical axis O of the lens body 130. Examples of the drive source of the actuator include a magnet, a coil, a piezoelectric element, and a shape memory alloy, but are not limited thereto. In addition, the focus may be fixed without providing an actuator. Conversely, a plurality of lens bodies 130 may be driven.
The inner cover 31 has a front plate 311 and four side plates 312 extending along the Z side from four sides of the front plate 311. The front plate 311 and the base 37 of the inner cover 31 are provided with through holes, respectively. The lens body 130 is exposed to the + Z side through the through hole of the inner cover 31.
Four magnets 35 are provided on the outer surfaces of the four side plates 312 of the inner cover 31. For each magnet 35, two rectangular parallelepiped magnet pieces are arranged in parallel in the Z direction. The two magnet sheets are magnetized so that the magnetic poles in the plate surface direction become opposite magnetic poles. Each magnet 35 may be obtained by magnetizing one magnet piece so as to have the above-described magnetic pole arrangement.
The image sensor unit is configured such that the image sensor 190 is mounted together with the sensor substrate 191 at the center of the FPC8, and the housing 7 is mounted on the FPC8 from the front side of the image sensor 190. The frame 7 is attached to the rear surface of the base 37. The image sensor 190 has a rectangular shape, is located directly behind the lens body 130, and converts light incident through the lens body 130 into an image signal and outputs the image signal.
The FPC8 electrically connects the body of the camera device 101 and the image sensor 190 and the actuator of the AF module 3.
The housing 1 has a front panel 11 and four side panels 12 extending along the-Z side from four sides of the front panel 11. The housing 1 and the bottom plate 9 are combined as an outer frame. The front plate 11 of the housing 1 is provided with a through hole 10. The four wall portions 61 of the holder 6 face each other in the X and Y directions.
The holder 6 is a rectangular frame-shaped body having 2 pairs of wall portions 61 facing in the X direction Y direction, and a leg portion 63 extending rearward is provided at one diagonal. The leg 63 is mounted and fixed on the front surface of the base plate 9. A recessed portion recessed inward is provided on the outer surface of wall portion 61 of bracket 6 except for a corner portion where wall portion 61 on the X side and wall portion 61 on the + Y side intersect. An FPC5 is fixed in the recess. FPC5 is bent along the recess. The FPC5 electrically connects the main body of the camera device 101 to the coil 4 and the hall element 49 described later.
The four wall portions 61 are provided with long holes 62. The eight coils 4 are accommodated in the elongated holes 62 of the four wall portions 61 two by two along each side length direction of the quadrangle. The coil 4 fixed to the wall portion 61 facing in the X direction is wound around the X axis, and the coil 4 fixed to the wall portion 61 facing in the Y direction is wound around the Y axis. One hall element 49 is disposed in each of the hollow portions of the Y-side coil 4 of the coils 4 fixed to the + X-side wall portion 61, the + Y-side coil 4 of the coils 4 fixed to the-X-side wall portion 61, and the X-side coil 4 of the coils 4 fixed to the-Y-side wall portion 61. The coil 4 and the hall element 49 are fixed to the inner surface of the FPC5, and face the magnet 35.
Preferably, for the eight coils 4, for example, two coils 4 on opposite sides with respect to the optical axis O are electrically connected in series, respectively, and a set of four coils is provided. When a current flows through the two coils 4, electromagnetic forces are generated that are opposite in the front-rear direction and have the same magnitude. Thus, without generating an unnecessary force for moving the AF module 3 in the Z direction, the AF module 3 can be tilted in the axial direction, which is the direction orthogonal to the line connecting the two coils 4.
Two hall elements 49 of the 3 hall elements 49 are arranged at positions separated from each other on opposite sides with respect to the optical axis O. The remaining one hall element 49 is disposed at a position separated from the optical axis O in a direction orthogonal to the direction in which the two hall elements 49 are coupled. That is, 3 hall elements 49 are arranged at 90-degree intervals around the optical axis O. The hall element 49 detects a magnetic field from the magnet 35 facing the hall element 49, and outputs a signal indicating the detection result. The signal corresponds to the position of the magnet 35 in the Z direction, which is opposed to the hall element 49. By deriving the position in the Z direction, even if the position in the Z direction of the AF module 3 is shifted during the tilt movement, the shift amount can be detected, and therefore, an accurate tilt can be derived. The 3 hall elements 49 are located at equal distances from the optical axis O.
The universal spring 2 includes an inner frame portion 21, an intermediate frame portion 22, and an outer frame portion 23. The inner frame portion 21 and the outer frame portion 22 are coupled by a 1 st coupling portion 24 at the midpoint in the X direction, and the inner frame portion 22 and the outer frame portion 23 are coupled by a 2 nd coupling portion 25 at the midpoint in the Y direction.
The inner frame portion 21 of the gimbal spring 2 is fixed to the periphery of the front plate 311 of the inner cover 31 of the AF module 3. The outer frame portion 23 of the universal spring 2 is fixed to the front end of the wall portion 61 of the bracket 6. The AF module 3 and the magnet 35 as the movable portions are supported by the gimbal springs 2 in a state of floating in the space inside the four wall portions 61 of the holder 6.
The FPC8 is a point-symmetric thin plate. The FPC8 has a body portion 82, an image sensor connecting portion 83, an external terminal portion 81, an external terminal connecting portion 84, and a connecting portion 85. The body portion 82 has a rectangular shape. A hole is provided in the center of the body portion 82, the image sensor 190 is fixed to the sensor substrate 191 so as to be fitted into the hole from the rear side, and the body portion 82 is fixed to the front surface of the sensor substrate 191.
Two image sensor connecting portions 83, two external terminal portions 81, two external terminal connecting portions 84, and two connecting portions 85 are provided, and are located at point-symmetrical positions with respect to the center of the image sensor 190. The image sensor connecting portion 83 extends outward, that is, in the + X direction and the-X direction, from the base end of the position closer to the Y side among the + X side and the base end of the position closer to the + Y side among the-X side of the peripheral edge of the main body portion 82, respectively. The front end of the image sensor connecting portion 83 is connected to one end of the connecting portion 85.
The coupling portion 85 has an L-shape, and the bent angle thereof corresponds to the corner of the leg portion 8 where the bracket 6 is not provided. The coupling portion 85 is bent at a right angle from a portion adjacent to the image sensor coupling portion 83, extends in the + Y direction along the + X side, surrounds the outside of the corner portion of the main body portion 82, and extends in the X direction along the + Y side. On the other hand, the side along the-X side extends in the-Y direction, and the side along the-Y side extends in the + X direction around the outside of the corner portion of the body portion 82. The other end of the coupling portion 85 is connected to the tip of the external terminal connecting portion 84. That is, one of the two L-shaped coupling portions 85 is provided along the 2 side of the rectangular main body 82, and the other is provided along the remaining 2 side of the main body 82. The coupling portion 85 is located in a space between the rear surface of the bracket 6 formed by the leg portions 63 and the front surface of the bottom plate 9, and is located near the center therebetween. Thus, even if the AF module 3 is tilted and the FPC8 moves forward and backward, unnecessary contact with other parts is unlikely to occur.
The external terminal connecting portion 84 extends from the base end of the external terminal portion 81 side in the-Y direction and the + Y direction, which are inward directions, and is connected to the other end of the connecting portion 85. On the rear surface of the external terminal portion 81, an external terminal 811 is provided. In the external terminal connecting portion 84, the FPC8 is projected to the outside of the optical component driving device 100 from a gap between the housing 1 and the bottom plate 9 formed by a cutout provided in the housing 1, and the external terminal 811 is connected to and fixed to an external substrate. The direction in which the image sensor connecting portion 83 extends from the main portion 82 and the direction in which the external terminal connecting portion 84 extends from the external terminal portion 81 are orthogonal to each other.
A control unit (not shown) is provided on the FPC 5. The control unit performs: detection control of determining the tilt with respect to the Z axis of the movable portion based on the output signals of the 3 hall elements 49 of the movable portion; and drive control for individually controlling the current flowing through the coil 4 based on the result to operate the movable portion. The control unit may be provided outside the optical component driving apparatus 100.
In the detection control, the control unit first calculates an average value of output signals of two hall elements 49 arranged at positions separated from each other on opposite sides with respect to the optical axis O among the 3 hall elements 49, and calculates the Z-direction position of the movable portion based on the average value. The difference between the average value and any output signal of the two Hall elements 49 is calculated, and the deviation between the Z-direction position of the movable part and the Z-direction position of the magnet 35 is calculated based on the difference. The amount of inclination of the in-plane movable portion formed by the magnet 35 and the optical axis O with respect to the Z axis is calculated from the distance from the optical axis O to the magnet 35 and the deviation of the position of the magnet 35 in the Z direction. Next, the difference between the average value of the output signals of the two hall elements 49 and the output signal of the remaining one (i.e., the 3 rd hall element 49) is calculated, and the deviation between the Z-direction position of the movable portion and the Z-direction position of the magnet 35 is calculated based on the difference. The amount of inclination of the surface formed by the magnet 35 and the optical axis O facing the remaining one hall element 49 with respect to the Z axis is calculated from the distance from the optical axis O to the magnet 35 and the deviation of the position of the magnet 35 in the Z direction.
The control unit causes a current to flow through the coil 4 so that the AF module 3 can be appropriately tilted for the purpose of shake correction during drive control. When a current flows through the two predetermined coils 4 located on opposite sides of the optical axis O, electromagnetic forces of the same magnitude and opposite directions are generated in the front-rear direction. Since the number of the coil groups 4 generating electromagnetic force in the opposite directions with respect to the optical axis O is 4, the AF module 3 can be tilted about the axis in the predetermined direction in the XY plane by passing an appropriate current through each coil group 4, and fine jitter correction control can be performed.
The above is the details of the configuration of the present embodiment. The optical component driving device 100 of the present embodiment includes, in an XYZ rectangular coordinate system: an optical component having a lens body 130, an image sensor 190 that converts light incident via the lens body 130 into a signal, and an FPC8 electrically connected to the image sensor 190; the FPC8 has a main body 82 for fixing the image sensor 190, an image sensor connection portion 83 extending outward from the periphery of the main body 82, an external terminal portion 81 provided with an external terminal 811 on one surface, an external terminal connection portion 84 extending inward from the periphery of the external terminal portion, and a connection portion 85 for connecting the image sensor connection portion 83 and the external terminal connection portion 84. Thus, the direction in which the image sensor connecting portion 83 extends from the body portion 82 and the direction in which the external terminal connecting portion 84 extends from the external terminal 811 are orthogonal to each other. Therefore, when the movable portion is moved obliquely about the axis of the Y axis, the image sensor connection portion 83 is easily deformed following the tilting movement, but the external terminal connection portion 84 becomes deformed in a twisted direction, so that resistance against the deformation becomes large, and deformation is difficult to occur. Therefore, the image sensor connecting portion 83 is deformed. When the movable portion is moved obliquely about the axis of the X axis, the external terminal connecting portion 84 is easily deformed following the tilting movement, but the image sensor connecting portion 83 becomes deformed in a twisted direction, and therefore resistance against the deformation becomes large, and it is difficult to deform. Therefore, the external terminal connecting portion 84 is deformed. Even if the axis of the shaft is tilted, the resistance to deformation is large, and the torsion is hard to occur. Therefore, the optical member driving device 100 in which the FPC8 is less likely to be twisted can be provided. In addition, since resistance of the FPC8 to the tilting motion is small, a smooth tilting motion can be realized.
In the above embodiment, the number of the image sensor connecting portions 83, the external terminal portions 81, the external terminal connecting portions 84, and the connecting portions 85 may be four. In this case, the image sensor connecting portions 83 may protrude from four positions of the main body portion 82 that are point-symmetrical about the center of the image sensor 190.
In the above embodiment, eight coils 4 are provided in the movable portion, and four magnets 35 are provided in the fixed portion.
It is also possible to form four coil groups by electrically connecting two adjacent coils 4 so as to generate electromagnetic forces in the same direction in the front-rear direction when a current flows, and to electrically connect two coil groups on opposite sides with respect to the optical axis O so as to generate electromagnetic forces in opposite directions in the front-rear direction when a current flows. In this case, the two coils 4 to be electrically connected may be two coils 4 arranged on the same wall portion 61, or two coils 4 arranged on two adjacent wall portions 61. The coil 4 may be independently supplied with current without being electrically connected to another coil 4. The number of coils 4 is not limited to eight, and may be four. In this case, the control is simple.
The FPC8 can be applied to a shape in which the optical component is tilted. For example, the coil 4 and the magnet 35 may be disposed on the bottom surface of the AF module 3 and the front surface of the chassis 9. In addition, a piezoelectric element or a shape memory alloy may be used as a driving source. The AF module 3 need not be an optical component, and may be a fixed-focus module, for example.
The universal spring 2 is not required to be used, and a pivot or the like may be used.
[ notation ] to show
1, covering the shell; 2, a universal spring; a 3AF module; 4, coils; 5. 8 FPC; 6, a bracket; 7 a frame body; 9 a bottom plate; 10 through holes; 11. 311 a front plate; 12. 312 side plates; 21 an inner frame portion; 22 a middle frame portion; 23 an outer frame portion; 24 the 1 st joint; 25 the 2 nd connecting part; 31 an inner cover; 35 a magnet; 37 a base; 49 Hall elements; 61 wall portion; 62 long holes; 63 a leg portion; 80 holes; 81 external terminal portions; 82 a body portion; 83 an image sensor connection part; 84 an external terminal connection portion; 85 a connecting part; 100 an optical component driving device; 101 a camera device; 102 a smart phone; 130 a lens body; 190 an image sensor; 191 a sensor substrate; 811 external terminals.
Claims (6)
1. An optical component driving device is characterized by comprising, in an XYZ orthogonal coordinate system:
an optical member having a lens body, an image sensor that converts light incident through the lens body into a signal, and an FPC electrically connected to the image sensor; and
a fixing section for holding the optical member so as to be capable of tilting about axes in X and Y directions,
the FPC has: a body portion fixing the image sensor; an image sensor connecting portion extending outward from a peripheral edge of the main body portion; an external terminal portion having an external terminal on one surface; an external terminal connecting portion extending inward from a peripheral edge of the external terminal portion; and a coupling portion coupling the image sensor connection portion and the external terminal connection portion,
the direction in which the image sensor connecting portion extends from the main body portion and the direction in which the external terminal connecting portion extends from the external terminal portion are orthogonal to each other.
2. Optical component driving device according to claim 1,
the image sensor connecting portion extends from two or four positions that are point-symmetrical about a center of the image sensor.
3. Optical component driving device according to claim 1 or 2,
the image sensor includes two connection portions that are point-symmetric about a center of the image sensor, and the two connection portions are L-shaped.
4. Optical component driving device according to claim 3,
the main body part is in a rectangular shape,
one of the two L-shaped connecting portions is provided along both sides of the rectangular main body portion, and the other is provided along the remaining both sides of the main body portion.
5. A camera device comprising the optical member driving device according to any one of claims 1 to 4.
6. An electronic device comprising the camera device according to claim 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022083515.6U CN212540830U (en) | 2020-09-22 | 2020-09-22 | Optical member driving device, camera device, and electronic apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022083515.6U CN212540830U (en) | 2020-09-22 | 2020-09-22 | Optical member driving device, camera device, and electronic apparatus |
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| CN212540830U true CN212540830U (en) | 2021-02-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115225804A (en) * | 2021-09-23 | 2022-10-21 | 新思考电机有限公司 | Image sensor driving device, camera device, and electronic apparatus |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115225804A (en) * | 2021-09-23 | 2022-10-21 | 新思考电机有限公司 | Image sensor driving device, camera device, and electronic apparatus |
| CN115225804B (en) * | 2021-09-23 | 2024-01-16 | 新思考电机有限公司 | Image sensor driving device, camera device, and electronic apparatus |
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