Optical device driving mechanism and camera module

Abstract

The present disclosure relates to an optical device driving mechanism and a camera module, wherein the optical device driving mechanism comprises a first base, a second base movable relative to the first base in an X-Y plane, and a third base movable relative to the first base along a Z axis, wherein the first base is provided with a magnet, the second base is provided with a first coil, and the third base is provided with a second coil, wherein the magnet comprises a first magnetic pair, a second magnetic pair, and a third magnetic pair arranged between the first magnetic pair and the second magnetic pair, and has a first surface facing the first coil formed by the first magnetic pair and the third magnetic pair, and a second surface facing the second coil formed by the second magnetic pair and the third magnetic pair, wherein the third magnetic pair has the same magnetic poles at the first surface and the second surface, the magnetic poles of the first magnetic pair at the first surface are opposite to those of the third magnetic pair to form a closed magnetic circuit, and the magnetic poles of the second magnetic pair at the second surface are opposite to those of the third magnetic pair to form a closed magnetic circuit.

Description

Technical Field

[0001] This disclosure relates to the field of optical imaging technology, and more specifically, to an optical device driving mechanism and a camera module. Background Technology

[0002] In related technologies, to improve the image sharpness of camera modules, optical image stabilization (OIS) and autofocus (AF) functions are typically introduced. Autofocus and OIS functions mostly use magnets and coils to generate electromagnetic forces to drive the lens. Since camera modules are located within electronic devices, which have significant space requirements, current magnets not only occupy a large space but also provide weak driving force in both the stabilization and focusing directions, making it difficult to balance the need for a small overall structure with the requirement for high driving force. Summary of the Invention

[0003] The first objective of this disclosure is to provide an optical device driving mechanism that solves the problem of poor driving force in current optical device driving mechanisms.

[0004] A second object of this disclosure is to provide a camera module that includes the optical device driving mechanism provided in this disclosure.

[0005] To achieve the above objectives, this disclosure provides an optical device driving mechanism, including a first substrate, a second substrate movable relative to the first substrate in the XY plane, and a third substrate movable relative to the first substrate along the Z-axis.

[0006] The first substrate has a magnet disposed thereon; the second substrate has a first coil disposed thereon that interacts electromagnetically with the magnet and is capable of relative movement; and the third substrate has a second coil disposed thereon that interacts electromagnetically with the magnet and is capable of relative movement.

[0007] The magnet comprises a first magnetic pair, a second magnetic pair, and a third magnetic pair disposed between the first magnetic pair and the second magnetic pair, and has a first surface formed by the first magnetic pair and the third magnetic pair facing the first coil, and a second surface formed by the second magnetic pair and the third magnetic pair facing the second coil.

[0008] The third magnetic pair has the same magnetic poles on the first surface and the second surface, the magnetic poles of the first magnetic pair on the first surface are opposite to those of the third magnetic pair to form a closed magnetic circuit, and the magnetic poles of the second magnetic pair on the second surface are opposite to those of the third magnetic pair to form a closed magnetic circuit.

[0009] Optionally, the cross-section of the magnet is formed into an L-shaped structure, with the first magnetic pair and the second magnetic pair located on opposite sides of the L-shaped structure, and the third magnetic pair located at the corner of the L-shaped structure.

[0010] Optionally, the magnet structure is a split structure composed of multiple bipolar magnetic blocks, and the magnetization direction of the first magnetic pair is parallel to the Z-axis, the magnetization direction of the second magnetic pair is parallel to the X-axis, and the magnetization direction of the third magnetic pair is inclined to the XY plane and the Z-axis.

[0011] Optionally, the cross-section of the magnet is square, the first magnetic pair and the second magnetic pair are respectively located at two opposite corners of the magnet, and the third magnetic pair is located between the other two opposite corners. The magnetization direction of the third magnetic pair is inclined to the XY plane and the Z axis.

[0012] Optionally, the cross-section of the magnet is formed as a pentagon with one of its interior angles being a right angle between the first surface and the second surface, and the third magnetic pair extends from the position of the right angle to at least one opposite side, and the magnetization direction of the third magnetic pair is the same and inclined to the XY plane and the Z axis.

[0013] Optionally, the magnet structure is a split structure composed of multiple bipolar magnetic blocks, or an integrated structure formed by multipolar magnetization.

[0014] Optionally, the first magnetic pair and the second magnetic pair have the same structure.

[0015] Optionally, a first magnetic element is provided on the side of the first coil facing away from the first magnetic pair, and / or a second magnetic element is provided on the side of the second coil facing away from the second magnetic pair.

[0016] Optionally, a ball bearing is provided between the first substrate and the second substrate to support the movement of the second substrate relative to the first substrate.

[0017] According to a second aspect of this disclosure, a camera module is also provided, the camera module including a lens and an optical device driving mechanism provided in this disclosure.

[0018] Through the above technical solution, when the first coil is energized, it will generate electromagnetic interactions with both the first and third magnetic pairs, increasing the driving force generated by the first coil to move the lens in the XY plane, thereby achieving a larger image stabilization travel. When the second coil is energized, it will generate electromagnetic interactions with both the second and third magnetic pairs, increasing the driving force generated by the second coil to move the lens along the Z-axis, thereby achieving a greater autofocus function. In this embodiment, the image stabilization direction magnetic circuit and the focus direction magnetic circuit share the third magnetic pair, and the magnetization direction of the third magnetic pair is inclined to both the image stabilization direction and the focus direction, so that the magnets simultaneously form closed magnetic circuits for autofocus and image stabilization, thereby simultaneously increasing the driving force in both the image stabilization and focus directions, meeting the large travel requirements, and ensuring the high-definition imaging performance of the camera module.

[0019] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is an exploded view of an optical device driving mechanism provided in an exemplary embodiment of this disclosure;

[0022] Figure 2 This is a partial cross-sectional view of an optical device driving mechanism provided in an exemplary embodiment of this disclosure;

[0023] Figure 3 This is a schematic diagram of the optical device driving mechanism with some structures omitted, provided in an exemplary embodiment of this disclosure;

[0024] Figure 4 This is a magnetic field distribution diagram of an optical device driving mechanism provided in an exemplary embodiment of this disclosure;

[0025] Figure 5 This is a magnetic field distribution diagram of an optical device driving mechanism provided in another exemplary embodiment of this disclosure;

[0026] Figure 6 This is a magnetic field distribution diagram of an optical device driving mechanism provided in yet another exemplary embodiment of this disclosure;

[0027] Figure 7 This is a magnetic field distribution diagram of an optical device driving mechanism provided in an exemplary embodiment of the related technology;

[0028] Figure 8This is a magnetic field distribution diagram of an optical device driving mechanism provided in another exemplary embodiment of the related technology.

[0029] Explanation of reference numerals in the attached figures

[0030] 101 First matrix 102 Second matrix

[0031] 103 Third matrix 104 Shell

[0032] 200 magnets 201 First magnetic pair

[0033] 202 Second magnetic pair 203 Third magnetic pair

[0034] 301 First coil; 302 Second coil

[0035] 401 First magnetic component 402 Second magnetic component Detailed Implementation

[0036] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0037] In this disclosure, unless otherwise stated, directional terms such as "up," "down," "left," and "right" are used in accordance with Figure 2 The orientation defined in the drawings, "inner" and "outer," refers to the outline of the corresponding component itself. Furthermore, the terms "first," "second," etc., used in the embodiments of this disclosure are for distinguishing one element from another and do not have sequential or importance implications. In the following description relating to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0038] In related technologies, some optical device drive mechanisms that simultaneously possess autofocus and optical image stabilization functions use a single magnet or multiple magnets to generate electromagnetic interactions with coils to drive the lens. Figure 7 and Figure 8 The magnetic field line distribution diagrams for a single magnet and multiple magnets in related technologies are shown respectively. Figure 7 In the middle, a closed magnetic circuit originating from magnet 200' and returning to magnet 200' via the first magnetic element 401' is used to provide the driving force for optical image stabilization; while in Figure 8 In this structure, a closed magnetic circuit originating from magnet 200', passing through the first magnetic element 401' and returning to magnet 200', provides the driving force for optical image stabilization. A similar closed magnetic circuit, passing through the second magnetic element 402' and returning to magnet 200', provides the driving force for autofocus. As can be seen from the magnetic field distribution diagram, the multi-magnet structure described above has a weaker magnetic force in providing the driving force for autofocus, while the single-magnet structure is even less effective in providing the driving force for autofocus. Figure 7 (A closed magnetic circuit cannot be formed on the left and right sides of the middle plane).

[0039] To solve the above problems, refer to Figures 1 to 6 As shown, this disclosure provides an optical device driving mechanism, including a first base 101, a second base 102 movable relative to the first base 101 in the XY plane (i.e., a plane perpendicular to the optical axis, i.e., the direction of movement for achieving optical image stabilization), and a third base 103 movable relative to the first base 101 along the Z-axis (i.e., the direction of movement for autofocus, i.e., the direction of movement for autofocus). Figure 1 As shown, the first base 101 can be constructed as a square frame; the second base 102 can be a square base structure, and the bottom of the first base 101 can be supported on the second base 102 by ball bearings; the third base 103 can be constructed as a square frame with a profile smaller than the first base 101, so that the third base 103 can be accommodated in the first base 101, and the side wall of the third base 103 is supported on the side wall of the first base 101 by ball bearings; in addition, the optical device driving mechanism in this embodiment may also include a housing 104 covering the outermost layer to protect the internal structure.

[0040] The first substrate 101, the second substrate 102, and the third substrate 103 can all be movably disposed on the housing 104, or one of them can be fixed to the housing 104 while the other two are movably disposed on the housing 104. This disclosure will now be illustrated by an embodiment in which the first substrate 101 is fixedly disposed on the housing 104, and the second substrate 102 and the third substrate 103 are movably disposed on the housing 104. Specifically, the first coil 301 can simultaneously drive the second substrate 102 and the third substrate 103 to move along the image stabilization direction, and the second coil 302 drives the third substrate 103 to move relative to the second substrate 102 along the focusing direction. In other embodiments, the second substrate 102 and the third substrate 103 can also move along the image stabilization direction and the focusing direction respectively, and their movements are independent of each other. These variations should all fall within the protection scope of this disclosure.

[0041] The first substrate 101 is provided with a magnet 200, the second substrate 102 is provided with a first coil 301 that generates electromagnetic interaction with the magnet 200 and is able to move relative to it, and the third substrate 103 is provided with a second coil 302 that generates electromagnetic interaction with the magnet 200 and is able to move relative to it. The magnet 200 includes a first magnetic pair 201, a second magnetic pair 202, and a third magnetic pair 203 disposed between the first magnetic pair 201 and the second magnetic pair 202. It has a first surface formed by the first magnetic pair 201 and the third magnetic pair 203 facing the first coil 301, and a second surface formed by the second magnetic pair 202 and the third magnetic pair 203 facing the second coil 302. The third magnetic pair 203 has the same magnetic poles on the first and second surfaces, that is, the magnetization direction of the third magnetic pair 203 is inclined to the Z-axis and the XY plane. The magnetic poles of the first magnetic pair 201 on the first surface are opposite to those of the third magnetic pair 203 to form a closed magnetic circuit, thereby driving the second substrate 102 to move relative to the first substrate 101, which can play a role in image stabilization. The magnetic poles of the second magnetic pair 202 on the second surface are opposite to those of the third magnetic pair 203 to form a closed magnetic circuit, thereby driving the third substrate 102 to move relative to the first substrate 101, which can play a role in autofocus. Figures 4-6 These are some arrangements of the magnets 200. To make the illustration clear, the first coil 301 and the second coil 302 are not shown. In actual applications, the first coil 301 is placed near the first magnetic component 401 in the figure, and the second coil 302 is placed near the second magnetic component 402 in the figure. The first magnetic component 401 and the second magnetic component 402 can respectively play the role of magnetic attraction. Their specific arrangements will be described in detail below.

[0042] It should be noted that the focusing direction extends along the Z-axis, while the image stabilization direction extends along the XY plane. Please refer to [reference needed] for details. Figures 1-3 The coordinate axes are shown in the figure.

[0043] Through the above technical solutions, such as Figures 4-6The magnetic field distribution shown indicates that when the first coil 301 is energized, the combined electromagnetic action of the first magnetic pair 201 and the third magnetic pair 203 increases the driving force generated by the first coil 301 to drive the second substrate 102 to move in the XY plane, thereby achieving a larger image stabilization stroke. When the second coil 302 is energized, the combined electromagnetic action of the second magnetic pair 202 and the third magnetic pair 203 increases the driving force generated by the second coil 302 to drive the third substrate 103 to move along the Z-axis, thereby achieving a larger autofocus function. In this embodiment, the image stabilization direction magnetic circuit and the focus direction magnetic circuit share the third magnetic pair 203, and the magnetization direction of the third magnetic pair 203 is inclined to the image stabilization direction and the focus direction, so that the magnet 200 simultaneously forms a closed magnetic circuit for autofocus and a closed magnetic circuit for image stabilization, thereby simultaneously increasing the driving force in the image stabilization direction and the focus direction, meeting the large stroke requirement, and ensuring the high-definition imaging performance of the camera module.

[0044] As mentioned above, ball bearings may be provided in contact between the first substrate 101 and the second substrate 102 to support the movement of the second substrate 102 relative to the first substrate 101. For example, ball bearings may be provided at at least three corners to form a triangular support, or as... Figure 1 Ball bearings are provided at all four corners of the substrate. Ball bearings can be arranged in contact between the first substrate 101 and the third substrate 103 to support the movement of the third substrate 103 relative to the first substrate 101. Alternatively, they can be provided at both ends of one side, with each end supported by a row of multiple ball bearings. In other embodiments, support can also be provided by springs, shape memory metal, sliding shafts, sliding shaft ball bearings, etc., and this disclosure does not limit this to any particular method.

[0045] In this embodiment of the disclosure, reference is made to Figure 2 The magnet 200 can be formed in an L-shaped cross-section. The first magnetic pair 201 and the second magnetic pair 202 are located on opposite sides of the L-shape, and the third magnetic pair 203 is located at the corner of the L-shape, thus forming closed magnetic circuits between the first magnetic pair 201 and the third magnetic pair 203, and between the second magnetic pair 202 and the third magnetic pair 203. This arrangement allows the magnet 200 to achieve a large driving force within a relatively small size. Other components can be placed inside the corner of the L-shape. For example... Figure 2 As shown, when the magnet 200 is constructed as an L-shaped structure, the part of the first substrate 101 connected to it can also be constructed as a structure that is adapted to it.

[0046] When the magnet 200 is constructed in an L-shape, it can be constructed as a split structure composed of multiple bipolar magnetic blocks, which is convenient for installation. The magnetization direction of the first magnetic pair 201 can be parallel to the Z-axis, the magnetization direction of the second magnetic pair 202 can be parallel to the X-axis, and the magnetization direction of the third magnetic pair 203 can be inclined to the XY plane and the Z-axis. Figure 4The optical device driving mechanism of this disclosure includes a magnetic field distribution diagram of the L-shaped magnet 200. As can be seen from the diagram, the magnet 200 has a relatively dense closed magnetic circuit on both the right and bottom sides of the diagram. The arrangement of three magnetic pairs can significantly increase the driving force in the image stabilization and focusing directions. In this embodiment, the magnetic pole distribution direction of the first magnetic pair 201 is perpendicular to the magnetic pole distribution direction of the second magnetic pair 202, so as to... Figure 2 Taking the diagram as an example, the magnetic poles of the first magnetic pair 201 are distributed vertically, the magnetic poles of the second magnetic pair 202 are distributed horizontally, and the magnetic poles of the third magnetic pair 203 are distributed at a 45° angle to both the horizontal and vertical directions. Of course, the tilt angle of the third magnetic pair 203 can be adjusted according to actual needs. For example, in the diagram, if the optical device drive mechanism requires a high driving force for autofocus, the magnetic pole switching surface of the third magnetic pair 203 (the dashed line in the diagram) can be rotated counterclockwise by a certain angle, which can be achieved during magnetization. Through the magnetic pole settings of the first magnetic pair 201, the second magnetic pair 202, and the third magnetic pair 203, and the position of the third magnetic pair 203 relative to the first coil 301 and the second coil 302, the first coil 301 can be energized within the magnetic fields of the first magnetic pair 201 and the second magnetic pair 202, and the second coil 302 can be energized within the magnetic fields of the second magnetic pair 202 and the third magnetic pair 203.

[0047] Furthermore, the cross-section of the magnet 200 can be square. A square magnet 200 occupies less space, allowing it to achieve a larger driving force despite its smaller size. Its regular shape also facilitates magnetization. Specifically, the first magnetic pair 201 and the second magnetic pair 202 are located at two opposite corners of the magnet 200, while the third magnetic pair 203 is positioned between the other two opposite corners. The magnetization direction of the third magnetic pair 203 is inclined to the XY plane and the Z-axis. Figure 5 The optical device driving mechanism in this disclosure includes a magnetic field distribution diagram of the square magnet 200. As can be seen from the distribution diagram, the magnet 200 has a relatively dense closed magnetic circuit on the right and lower sides in the direction shown in the diagram. The arrangement of the three magnetic parts can greatly increase the driving force in the image stabilization direction and the focusing direction.

[0048] In other embodiments, reference is made to Figure 6The cross-section of magnet 200 can be formed as a pentagon with one of its interior angles being the right angle between the first and second surfaces. The third magnetic pair 203 extends from the right angle to at least one opposite side, and the magnetization direction of the third magnetic pair 203 is the same, inclined to the XY plane and the Z-axis. Specifically, the first magnetic pair 201, the second magnetic pair 202, and the third magnetic pair 203 have the same magnetization direction, facilitating synchronous magnetization of each pair. Magnet 200 can also be constructed in any suitable structure that increases the driving force in the image stabilization direction and the focusing direction; all such structures fall within the scope of this disclosure.

[0049] According to one embodiment of this disclosure, the magnet 200 can be constructed as a split structure composed of multiple bipolar magnetic blocks, or as an integral structure formed by multipolar magnetization. Multipolar magnetization refers to the magnetization process of performing two or more sets of magnetic pairs on the same magnet. Figure 5 Square magnet 200 and Figure 6 The irregular polygonal magnets 200 can be either a split structure composed of multiple bipolar magnetic blocks or a split structure composed of multiple bipolar magnetic blocks.

[0050] In addition, refer to Figure 2 The first magnetic pair 201 and the second magnetic pair 202 can have the same structure, and can be constructed as square, triangular or other suitable shapes to increase the versatility of each magnetic part and save costs.

[0051] In one embodiment, reference is made to... Figure 2 and Figure 3A first magnetic element 401 can be provided on the side of the first coil 301 facing away from the first magnetic pair 201. The first magnetic element 401 can generate a magnetic attraction with the first magnetic pair 201. When the first substrate 101 and the second substrate 102 are supported by ball bearings, this magnetic attraction will press the ball bearings tightly between the first substrate 101 and the second substrate 102, ensuring the stability of the optical device during the image stabilization process, improving the stability and reliability of the entire system, and effectively improving the optical imaging effect. In addition, after the first coil 301 is energized, the first magnetic element 401 constrains the direction of the magnetic field lines and concentrates the magnetic flux distribution, avoiding magnetic leakage, thereby improving the utilization rate of the magnetic field and increasing the driving force. The two ends of 401 can extend beyond the two ends of the first coil 301 to improve the magnetic attraction effect and increase the driving force. A second magnetic element 402 can be provided on the side of the second coil 302 facing away from the second magnetic pair 202. The principle of the second magnetic element 402 is similar to that of the first magnetic element 401, that is, the second magnetic element 402 can generate a magnetic attraction with the second magnetic pair 202. When the first substrate 101 and the third substrate 103 are supported by ball bearings, the magnetic attraction will press the ball bearings between the first substrate 101 and the third substrate 103, ensuring the stability of the optical device during the autofocus process, improving the stability and reliability of the entire system, and effectively improving the optical imaging effect.

[0052] According to a second aspect of this disclosure, a camera module is also provided, comprising a lens and the aforementioned optical device driving mechanism. This camera module possesses all the beneficial effects of the aforementioned optical device driving mechanism, which will not be elaborated further here. Furthermore, this disclosure does not limit the mounting positions of components such as the lens group and the chip in the camera module, as long as reasonable image stabilization and autofocus functions can be achieved. For example, a first substrate 101 is fixed in the housing of the optical device driving mechanism, the chip is fixed on a second substrate 102, and the lens group is fixed on a third substrate 103.

[0053] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0055] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An optical device driving mechanism, characterized in that, It includes a first substrate (101), a second substrate (102) movable relative to the first substrate (101) in the XY plane, and a third substrate (103) movable relative to the first substrate (101) along the Z axis. The first substrate (101) is provided with a magnet (200), the second substrate (102) is provided with a first coil (301) that generates electromagnetic interaction with the magnet (200) and can move relative to it, and the third substrate (103) is provided with a second coil (302) that generates electromagnetic interaction with the magnet (200) and can move relative to it. The magnet (200) includes a first magnetic pair (201), a second magnetic pair (202), and a third magnetic pair (203) disposed between the first magnetic pair (201) and the second magnetic pair (202). It has a first surface formed by the first magnetic pair (201) and the third magnetic pair (203) facing the first coil (301), and a second surface formed by the second magnetic pair (202) and the third magnetic pair (203) facing the second coil (302). The third magnetic pair (203) has the same magnetic poles on the first surface and the second surface, the first magnetic pair (201) has opposite magnetic poles on the first surface to the third magnetic pair (203) to form a closed magnetic circuit, and the second magnetic pair (202) has opposite magnetic poles on the second surface to the third magnetic pair (203) to form a closed magnetic circuit. The magnetization direction of the third magnetic pair (203) is inclined to the XY plane and the Z axis.

2. The optical device driving mechanism according to claim 1, characterized in that, The cross-section of the magnet (200) is formed into an L-shaped structure, the first magnetic pair (201) and the second magnetic pair (202) are located on both sides of the L-shaped structure, and the third magnetic pair (203) is located at the corner of the L-shaped structure.

3. The optical device driving mechanism according to claim 2, characterized in that, The magnet (200) is constructed as a split structure composed of multiple bipolar magnetic blocks, and the magnetization direction of the first magnetic pair (201) is parallel to the Z-axis, while the magnetization direction of the second magnetic pair (202) is parallel to the X-axis.

4. The optical device driving mechanism according to claim 1, characterized in that, The cross-section of the magnet (200) is square, the first magnetic pair (201) and the second magnetic pair (202) are respectively located at two opposite corners of the magnet (200), and the third magnetic pair (203) is located between the other two opposite corners.

5. The optical device driving mechanism according to claim 1, characterized in that, The cross-section of the magnet (200) is formed as a pentagon with one of its interior angles being a right angle between the first surface and the second surface, and the third magnetic pair (203) extends from the position of the right angle to at least one opposite side.

6. The optical device driving mechanism according to claim 4 or 5, characterized in that, The magnet (200) is constructed as a split structure consisting of multiple bipolar magnetic blocks, or as an integrated structure formed by multipolar magnetization.

7. The optical device driving mechanism according to any one of claims 1-5, characterized in that, The first magnetic pair (201) and the second magnetic pair (202) have the same structure.

8. The optical device driving mechanism according to any one of claims 1-5, characterized in that, A first magnetic element (401) is provided on the side of the first coil (301) facing away from the first magnetic pair (201), and / or a second magnetic element (402) is provided on the side of the second coil (302) facing away from the second magnetic pair (202).

9. The optical device driving mechanism according to any one of claims 1-5, characterized in that, A ball bearing is provided between the first substrate (101) and the second substrate (102) to support the movement of the second substrate (102) relative to the first substrate (101).

10. A camera module, characterized in that, It includes a lens and an optical device driving mechanism according to any one of claims 1-9.

Images