Optical element driving mechanism

Abstract

The invention provides an optical element driving mechanism. The optical element driving mechanism comprises a fixed assembly, a movable assembly and a driving module. The movable assembly is configured to be connected to an optical element, and the movable assembly can move relative to the fixed assembly. The driving module is configured to drive the movable assembly to move relative to the fixed assembly.

Description

Technical Field

[0001] The present disclosure relates to an optical element driving mechanism, and more particularly to a lightweight and miniaturized optical element driving mechanism. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones) now have the function of taking photos or recording videos. Through the camera module installed on the electronic device, the user can operate the electronic device to extract various photos.

[0003] The design of today's electronic devices is constantly developing towards the trend of miniaturization, so that various components or structures of camera modules must also be continuously reduced to achieve the purpose of miniaturization. Generally speaking, the driving mechanism in the camera module may have a lens carrier configured to carry a lens, and the driving mechanism may have the function of auto focusing or optical image stabilization. However, although the existing driving mechanism can achieve the aforementioned functions of taking pictures or recording videos, it still cannot meet all needs.

[0004] Therefore, how to design a camera module that can simultaneously perform autofocus and optical image stabilization and achieve miniaturization is a topic worth exploring and solving today. Summary of the invention

[0005] In view of this, the present disclosure proposes an optical element driving mechanism to solve the above-mentioned problem.

[0006] The present disclosure provides an optical element driving mechanism, comprising a fixed component, a movable component and a driving module. The movable component is configured to be connected to an optical element, and the movable component can move relative to the fixed component. The driving module is configured to drive the movable component to move relative to the fixed component.

[0007] According to some embodiments of the present disclosure, the fixed component includes a shell and a base. The shell and the base are arranged along a main axis. The optical element driving mechanism also includes a first circuit component. The first circuit component has a main body, and the optical element is arranged on the main body. The main body is connected to the movable component. The first circuit component also has a cantilever connected between the main body and the shell. The driving module is configured to drive the movable component, the main body and the optical element to move. The driving module includes a first driving component, which is configured to drive the movable component to move along the main axis. The movable component includes a base and a movable part. The driving module also includes a second driving component, which is configured to drive the movable part to move relative to the base along a first axial direction. The driving module also includes a third driving component, which is configured to drive the movable part to move relative to the base along a second axial direction. The first axial direction is perpendicular to the main axis. The second axial direction is perpendicular to the first axial direction and the main axis.

[0008] According to some embodiments of the present disclosure, the optical element driving mechanism also includes a second circuit component fixedly disposed on the movable component. The second circuit component is disposed on a side wall of the base. The first driving component includes a first magnetic element and a first driving element. One of the first magnetic element and the first driving element is disposed on the second circuit component, and the other of the first magnetic element and the first driving element is correspondingly disposed on the base. The first driving element is configured to induce a first electromagnetic driving force with the first magnetic element to drive the movable component to move along the main axis. The optical element driving mechanism also includes a third circuit component disposed on a bottom plate of the base. The second driving component includes a second magnetic element and a second driving element. One of the second magnetic element and the second driving element is disposed on the third circuit component, and the other of the second magnetic element and the second driving element is correspondingly disposed on the movable part. The second driving element is configured to induce a second electromagnetic driving force with the second magnetic element to drive the movable part to move relative to the base along the first axial direction. The third driving component includes a third magnetic element and a third driving element. One of the third magnetic element and the third driving element is disposed on the third circuit assembly, and the other of the third magnetic element and the third driving element is correspondingly disposed on the movable portion. The third driving element is configured to induce a third electromagnetic driving force with the third magnetic element to drive the movable portion to move relative to the base along the second axis.

[0009] According to some embodiments of the present disclosure, the driving module further includes a fourth driving component. The fourth driving component includes a fourth driving element. The fourth driving element is disposed on the third circuit component or the movable part. The fourth driving element is configured to induce a fourth electromagnetic driving force with the second magnetic element. When the second electromagnetic driving force is opposite to the fourth electromagnetic driving force, the second electromagnetic driving force and the fourth electromagnetic driving force are configured to drive the movable part to rotate around the main axis. The optical element driving mechanism further includes a first driving circuit and a second driving circuit, which are respectively disposed on the second circuit component and the third circuit component. The first driving circuit is electrically connected to the first driving element. The second driving circuit is electrically connected to the second driving element, the third driving element and the fourth driving element. The optical element driving mechanism further includes a plurality of first conductive members, which are disposed in the base. The second circuit component is electrically connected to the third circuit component via these first conductive members. The first driving circuit is electrically connected to the second driving circuit via these first conductive members and the third circuit component. The optical element driving mechanism further includes a plurality of second conductive members, which are disposed in the base. The optical element driving mechanism further includes a plurality of elastic elements, which are movably connected between the base and the base. The third circuit assembly is electrically connected to the elastic elements via the second conductive members. The optical element driving mechanism also includes a plurality of third conductive members, which are partially disposed in the base. The second conductive members, the elastic elements and the third conductive members form a plurality of external circuits. The first driving circuit and the second driving circuit share these external circuits.

[0010] According to some embodiments of the present disclosure, the first drive circuit and the second drive circuit are electrically connected to an external control circuit via these external lines. The first drive circuit controls the actuation of the first drive element according to a first control signal sent by the external control circuit. The second drive circuit controls the actuation of the second drive element, the third drive element and the fourth drive element according to a second control signal sent by the external control circuit. The first drive circuit is configured to sense the movement of the movable component relative to the base. The optical element drive mechanism also includes a first sensor, a second sensor and a third sensor, which are electrically connected to the second drive circuit. The first sensor, the second sensor and the third sensor are arranged on the third circuit component. The first sensor is configured to sense the movement of the movable part relative to the base along the first axial direction. The second sensor is configured to sense the movement of the movable part relative to the base along the second axial direction. The third sensor is configured to sense the rotation of the movable part around the main axis relative to the base.

[0011] According to some embodiments of the present disclosure, the optical element driving mechanism also includes a first guide component, which is arranged between the base and the movable component. The first guide component is configured to guide the movable component to move along the main axis. The optical element driving mechanism also includes a first attraction element, which is arranged on the base. The first attraction element is made of a magnetic material. The first guide component is made of a metal material. A first magnetic attraction force is generated between the first attraction element and the first guide component to drive the base to bear against the first guide component. The first guide component has a long strip structure. The length of the first guide component is greater than the length of the first attraction element on the main axis.

[0012] According to some embodiments of the present disclosure, the optical element driving mechanism also includes at least one second attraction element, which is arranged on the base and corresponds to the second magnetic element. When observed along the main axis, the second attraction element has a long strip structure. The extension direction of the second attraction element is different from the extension direction of the second magnetic element. The extension direction of the second attraction element is perpendicular to the extension direction of the second magnetic element. When observed along the main axis, the length of the second attraction element in the first axial direction is different from the width of the second magnetic element in the first axial direction. When observed along the main axis, the length of the second attraction element in the first axial direction is greater than the width of the second magnetic element in the first axial direction. The second attraction element and the second magnetic element are configured to generate a second magnetic attraction force.

[0013] According to some embodiments of the present disclosure, the optical element driving mechanism also includes at least one third attraction element, which is arranged on the base and corresponds to the third magnetic element. When observed along the main axis, the third attraction element has a long strip structure. The extension direction of the third attraction element is different from the extension direction of the third magnetic element. The extension direction of the third attraction element is perpendicular to the extension direction of the third magnetic element. When observed along the main axis, the length of the third attraction element in the second axial direction is different from the width of the third magnetic element in the second axial direction. When observed along the main axis, the length of the third attraction element in the second axial direction is greater than the width of the third magnetic element in the second axial direction. The third attraction element and the third magnetic element are configured to generate a third magnetic attraction force.

[0014] According to some embodiments of the present disclosure, the optical element driving mechanism also includes a plurality of second guide components, which are arranged between the base and the movable part. The movable part moves relative to the base through these second guide components. The movable part has a plurality of accommodating grooves, which are configured to respectively accommodate these second guide components. When observed along the main axis, each of these accommodating grooves has a circular structure. Each of these second guide components has a spherical structure. When observed along the main axis, the size of the accommodating groove is larger than the size of the corresponding second guide component. The material of these second guide components is different from the material of the movable part. The Young's modulus of these second guide components is different from the Young's modulus of the movable part. The Young's modulus of these second guide components is more than ten times that of the Young's modulus of the movable part. The movable part is made of plastic material. These second guide components are made of ceramic material.

[0015] According to some embodiments of the present disclosure, the optical element driving mechanism also includes a first optical module, which is detachably connected to a housing of the fixing component. The first optical module has a first optical element and at least one first driving member. The first driving member is configured to drive the first optical element to move relative to the housing along an optical axis of the first optical element. The optical element driving mechanism also includes a second optical module and a connecting member. The second optical module is detachably connected to the housing via the connecting member. The second optical module surrounds at least a portion of the first optical module. The second optical module has an aperture structure. The connecting member is disposed on the housing by embedded injection molding technology. The housing is made of metal material. The connecting member is made of plastic material.

[0016] The present disclosure provides an optical element driving mechanism, comprising a fixed component, a movable component and a driving module. The movable component is configured to be connected to an optical element, and the driving module is configured to drive the movable component to move relative to the fixed component. The driving module may include a first driving component configured to drive the movable component to move relative to the fixed component along the optical axis to achieve the purpose of autofocus.

[0017] In some embodiments, the optical element driving mechanism may further include two first guide components, which are disposed between the base and the movable component and are configured to guide the movable component to move relative to the base along the main axis. The optical element driving mechanism may further include two first attraction elements, which are disposed in the base of the movable component. A first magnetic attraction force may be generated between the first attraction element and the corresponding first guide component to drive the base to bear against the first guide component. Based on such a configuration, the movable component can be made more stable when moving along the main axis.

[0018] In addition, the optical element driving mechanism may further include a plurality of second guide components, the movable component may include the aforementioned base and a movable portion, and the movable portion may move relative to the base through the second guide components. The driving module may further include a second driving component and a third driving component, which are partially disposed on the base. When the optical element driving mechanism is shaken, the second driving component and the third driving component may drive the movable portion to move on the XY plane to achieve the purpose of optical image stabilization.

[0019] The beneficial effect of the present disclosure is that the present disclosure provides an optical element driving mechanism, including a fixed component, a movable component and a driving module. The movable component is configured to be connected to an optical element, and the driving module is configured to drive the movable component to move relative to the fixed component. The driving module may include a first driving component, configured to drive the movable component to move relative to the fixed component along the optical axis to achieve the purpose of autofocus. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present disclosure can be clearly understood through the detailed description below and in conjunction with the drawings. It is emphasized that, in accordance with standard practice in the industry, various features are not drawn to scale and are only used for illustrative purposes. In fact, in order to be able to clearly illustrate, the size of various features may be arbitrarily enlarged or reduced.

[0021] Figure 1 It is a three-dimensional schematic diagram of an optical element driving mechanism according to an embodiment of the present disclosure.

[0022] Figure 2 Detailed description of the invention The figure is an exploded view of an optical element driving mechanism according to an embodiment of the present invention.

[0023] Figure 3 The optical element driving mechanism according to one embodiment of the present disclosure is Figure 1 Section view of line segment AA.

[0024] Figure 4 An exploded view of a movable component according to an embodiment of the present disclosure.

[0025] Figure 5 It is a three-dimensional diagram of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0026] Figure 6 The optical element driving mechanism according to one embodiment of the present disclosure is Figure 1 Section view of line segment BB.

[0027] Figure 7 FIG. 4 is a bottom view of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0028] Figure 8 1 is a top view of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0029] Fig. 9 It is a three-dimensional diagram of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0030] Fig.10 4 is a functional block diagram of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0031] Fig.11 It is a front view schematic diagram of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0032] The reference numerals are as follows:

[0033] 100: Optical element driving mechanism

[0034] 101: Connecting components

[0035] 102: Shell

[0036] 1021: Shell opening

[0037] 1023: Accommodation space

[0038] 105: first conductive member

[0039] 106: Elastic element

[0040] 107: Second conductive member

[0041] 108: Activities Department

[0042] 108C: Four receiving slots

[0043] 109: Base

[0044] 1090: Base plate

[0045] 109W: Sidewall

[0046] 111: Bottom cover

[0047] 112: Base

[0048] 1121: Base opening

[0049] 113: third conductive member

[0050] 114: First circuit component

[0051] 1140: Ontology Department

[0052] 1141:Cantilever

[0053] 1142:Cantilever

[0054] 115: Optical components

[0055] 116: Second circuit component

[0056] 117: First driving circuit

[0057] 118: Third circuit component

[0058] 119: Second driving circuit

[0059] 120: first guide member

[0060] 130: Second guide component

[0061] 200: First optical module

[0062] 202: first driving member

[0063] 204: First driving member

[0064] 300: Second optical module

[0065] 301: Blade

[0066] AF1: First Magnetic Force

[0067] AF2: Second magnetic attraction

[0068] AF3: The third magnetic attraction

[0069] AH1: First attracting element

[0070] AH2: Second attractor

[0071] AH3: The third attraction element

[0072] AX1: First axis

[0073] AX2: Second axis

[0074] CL1: First drive element

[0075] CL2: Second drive element

[0076] CL3: Third drive element

[0077] CL4: Fourth drive element

[0078] CS1: First control signal

[0079] CS2: Second control signal

[0080] DA1: First drive assembly

[0081] DA2: Second drive assembly

[0082] DA3: Third drive assembly

[0083] DA4: Fourth drive assembly

[0084] DM: Drive Components

[0085] F1: The first electromagnetic driving force

[0086] F2: Second electromagnetic driving force

[0087] F3: The third electromagnetic driving force

[0088] F4: The fourth electromagnetic driving force

[0089] FA:Fixed components

[0090] LH: Length

[0091] LT1: Length

[0092] LT2: Length

[0093] LT3: Length

[0094] MA:Active Components

[0095] MG1: First magnetic element

[0096] MG2: Second magnetic element

[0097] MGC2: Center Point

[0098] MG3: The third magnetic element

[0099] MGC3: Center Point

[0100] MX:Spindle

[0101] O: Optical axis

[0102] O1: Optical axis

[0103] OE:Optical Components

[0104] SE1: First sensor

[0105] SE2: Second sensor

[0106] SE3: The third sensor

[0107] WT1: Width

[0108] WT2: Width

[0109] X: X-axis

[0110] Y: Y axis

[0111] Z: Z axis DETAILED DESCRIPTION

[0112] Many different implementation methods or examples are disclosed below to implement the different features of the provided subject matter. The following describes specific embodiments of the components and their arrangements to illustrate the present disclosure. Of course, these embodiments are only for illustration and should not be used to limit the scope of the present disclosure. For example, it is mentioned in the specification that the first characteristic component is formed on the second characteristic component, which may include an embodiment in which the first characteristic component and the second characteristic component are in direct contact, and may also include an embodiment in which there are other features between the first characteristic component and the second characteristic component. In other words, the first characteristic component and the second characteristic component are not in direct contact.

[0113] In addition, repeated numbers or marks may be used in different embodiments, and these repetitions are only for the purpose of simply and clearly describing the present disclosure, and do not represent a specific relationship between the different embodiments and / or structures discussed. In addition, in the present disclosure, forming, connecting to and / or coupling to another feature component on another feature component may include an embodiment in which the feature component is formed to be in direct contact, and may also include an embodiment in which an additional feature component inserted into the above-mentioned feature component can be formed, so that the above-mentioned feature component may not be in direct contact. In addition, space-related words may be used, such as "vertical", "above", "up", "below", "bottom" and similar words (such as "downwardly", "upwardly", etc.), these space-related words are for the convenience of describing the relationship between one (some) element or feature and another (some) element or feature in the diagram, and these space-related words are intended to cover different directions of the device including the feature.

[0114] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0115] Furthermore, the ordinal numbers used in the specification and claims, such as "first", "second", etc., to modify the elements of the claims, do not themselves imply or represent any previous ordinal numbers of the requested element, nor do they represent the order of one requested element and another requested element, or the order in the manufacturing method. The use of multiple such ordinals is only used to clearly distinguish a requested element with a certain name from another requested element with the same name.

[0116] In addition, in some embodiments of the present disclosure, terms such as "connection" and "interconnection" may refer to two structures being in direct contact with each other, or two structures not being in direct contact with each other, and other structures being disposed between the two structures, unless otherwise specified. Such terms may also include situations where both structures are movable or both structures are fixed.

[0117] Please refer to Figures 1 to 3 , Figure 1 FIG. 1 is a three-dimensional schematic diagram of an optical element driving mechanism 100 according to an embodiment of the present disclosure. Figure 2 is an exploded view of an optical element driving mechanism 100 according to an embodiment of the present disclosure, and Figure 3 The optical element driving mechanism 100 according to an embodiment of the present disclosure is Figure 1 Cross-sectional view of the AA line segment in the figure. The optical element driving mechanism 100 may be an optical camera module configured to carry and drive at least one optical element. The optical element driving mechanism 100 may be installed in various electronic devices or portable electronic devices, such as a smart phone, so that the user can perform image extraction functions. In this embodiment, the optical element driving mechanism 100 may be a voice coil motor (VCM) with an autofocus (AF) function, but the present disclosure is not limited to this. In other embodiments, the optical element driving mechanism 100 may also have autofocus (AF) and optical image stabilization (OIS) functions.

[0118] In this embodiment, the optical element driving mechanism 100 may include a fixed component FA, a movable component MA, and a driving component DM. The movable component MA is configured to connect an optical element 115, and the movable component MA can move relative to the fixed component FA. The driving component DM is configured to drive the movable component MA to move relative to the fixed component FA.

[0119] In this embodiment, if Figure 2 As shown, the fixing assembly FA includes a housing 102 and a base 112, and the housing 102 and the base 112 are arranged along a main axis MX. Furthermore, the optical element driving mechanism 100 may also include a first optical module 200, which is disposed on the housing 102. Another optical element OE may be disposed in the first optical module 200, and the optical element OE is, for example, a lens, but is not limited thereto.

[0120] like Figure 2As shown, the optical element driving mechanism 100 may further include a first circuit component 114, and the optical element 115 is disposed on the first circuit component 114. In this embodiment, a portion of the first circuit component 114 is fixed to the housing 102, and another portion of the first circuit component 114 is connected to the movable element MA. The first circuit component 114 is, for example, a flexible circuit board, and the optical element 115 is, for example, a photosensitive element, but is not limited thereto.

[0121] like Figure 2 As shown, the housing 102 has a hollow structure and has a housing opening 1021 formed thereon, and a base opening 1121 is formed on the base 112. The center of the housing opening 1021 corresponds to the optical axis O of the optical element OE, and the base opening 1121 corresponds to the optical element 115 disposed below the base 112. External light can enter the housing 102 through the housing opening 1021 and be received by the optical element 115 after passing through the optical element OE and the base opening 1121 to generate a digital image signal.

[0122] Furthermore, when the housing 102 is disposed on the base 112 , a receiving space 1023 can be formed to receive the active component MA, the driving module DM and a portion of the first circuit component 114 .

[0123] like Figure 2 As shown, the first circuit component 114 has a main body 1140 having a plate-like structure, the optical element 115 is disposed on the main body 1140, and the main body 1140 is fixedly connected to the movable component MA.

[0124] The first circuit assembly 114 further has a cantilever 1141 and a cantilever 1142 connected between the main body 1140 and the housing 102. Specifically, the cantilever 1141, 1142 extends from the main body 1140, and a portion of the cantilever 1141, 1142 is fixed to the housing 102. In this embodiment, the main body 1140 and the cantilever 1141, 1142 are integrally formed.

[0125] In this embodiment, the driving module DM is configured to drive the movable assembly MA, the main body 1140 and the optical element 115 to move along the main axis MX. Figure 2 and Figure 3 As shown, the optical element driving mechanism 100 may further include two first guiding components 120 disposed between the base 112 and the movable assembly MA.

[0126] The first guiding member 120 may have a columnar structure or a strip-shaped structure, extending along the main axis MX, and the first guiding member 120 is configured to guide the movable assembly MA to move along the main axis MX relative to the base 112 .

[0127] In this embodiment, if Figure 2 and Figure 3 As shown, the optical element driving mechanism 100 may further include a second circuit component 116 fixedly disposed on the movable component MA. The second circuit component 116 is, for example, a flexible circuit board, but is not limited thereto.

[0128] Furthermore, the driving module DM may include a first driving component DA1 configured to drive the movable component MA to move along the main axis MX. Specifically, the first driving component DA1 may include a first magnetic element MG1 and a first driving element CL1, the first magnetic element MG1 is fixedly disposed on the base 112, and the first driving element CL1 is disposed on the second circuit component 116, but is not limited thereto. In other embodiments, the positions of the first magnetic element MG1 and the first driving element CL1 may be interchanged.

[0129] The first magnetic element MG1 is, for example, a magnet, and the first driving element CL1 is, for example, a winding coil, but is not limited thereto. The first driving element CL1 is configured to induce the first magnetic element MG1 to generate a first electromagnetic driving force F1 to drive the movable element MA to move back and forth along the main axis MX.

[0130] In addition, if Figure 2 and Figure 3 As shown, the optical element driving mechanism 100 further includes a plurality of elastic elements 106 movably connected between the movable assembly MA and the base 112 . Therefore, the movable assembly MA can be suspended in the accommodating space 1023 through the elastic elements 106 .

[0131] Please refer to Figures 2 to 4 , Figure 4 FIG. 1 is an exploded view of a movable assembly MA according to an embodiment of the present disclosure. In this embodiment, the movable assembly MA may include a base 109 and a movable portion 108, and Figure 4 As shown, the second circuit assembly 116 is fixedly disposed on a side wall 109W of the base 109 .

[0132] Furthermore, the optical element driving mechanism 100 may further include a third circuit component 118 fixedly disposed on a bottom plate 1090 of the base 109. Similarly, the third circuit component 118 is, for example, a flexible circuit board, but is not limited thereto.

[0133] like Figure 4 As shown, the driving module DM may further include a second driving component DA2, and the second driving component DA2 may include a second magnetic element MG2 and a second driving element CL2. The second magnetic element MG2 is, for example, a magnet, and the second driving element CL2 is, for example, a winding coil, but is not limited thereto.

[0134] The second magnetic element MG2 is fixedly disposed on the movable portion 108, and the second driving element CL2 is disposed on the third circuit element 118, but the present invention is not limited thereto. In other embodiments, the positions of the second magnetic element MG2 and the second driving element CL2 can be interchanged.

[0135] The second driving element CL2 is configured to induce the second magnetic element MG2 to generate a second electromagnetic driving force F2 to drive the movable portion 108 to move relative to the base 109 along a first axial direction AX1, and the first axial direction AX1 is perpendicular to the main axis MX.

[0136] Similarly, the driving module DM may further include a third driving assembly DA3, and the third driving assembly DA3 may include a third magnetic element MG3 and a third driving element CL3. The third magnetic element MG3 is, for example, a magnet, and the third driving element CL3 is, for example, a winding coil, but is not limited thereto.

[0137] The third magnetic element MG3 is fixedly disposed on the movable portion 108, and the third driving element CL3 is disposed on the third circuit element 118, but the present invention is not limited thereto. In other embodiments, the positions of the third magnetic element MG3 and the third driving element CL3 can be interchanged.

[0138] The third driving element CL3 is configured to induce the third magnetic element MG3 to generate a third electromagnetic driving force F3 to drive the movable portion 108 to move relative to the base 109 along a second axis AX2 , and the second axis AX2 is perpendicular to the first axis AX1 and the main axis MX.

[0139] In addition, in this embodiment, the driving module DM may further include a fourth driving component DA4, and the fourth driving component DA4 may include a fourth driving element CL4, which is disposed on the third circuit component 118 and corresponds to the second driving element CL2. Figure 4 As shown, the fourth driving element CL4 and the second driving element CL2 are disposed on the same side of the third circuit element 118. In addition, in other embodiments, the fourth driving element CL4 may also be disposed on the movable portion 108.

[0140] Similarly, the fourth driving element CL4 is configured to induce the second magnetic element MG2 to generate a fourth electromagnetic driving force F4. That is, the fourth driving element CL4 and the second driving element CL2 share the same magnetic element (magnet).

[0141] In this embodiment, the currents provided to the fourth driving element CL4 and the second driving element CL2 may be the same or opposite. Figure 4As shown, in this embodiment, the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 have the same magnitude but opposite directions.

[0142] Therefore, when the second electromagnetic driving force F2 is opposite to the fourth electromagnetic driving force F4 , the second electromagnetic driving force F2 and the fourth electromagnetic driving force F4 are configured to drive the movable portion 108 to rotate relative to the base 109 around the main axis MX.

[0143] On the other hand, when the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 have the same magnitude and direction, the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 can jointly drive the movable portion 108 to move along the first axial direction AX1.

[0144] In addition, if Figure 4 As shown, the movable assembly MA further includes a bottom cover 111 fixedly connected to the base 109. The bottom cover 111 is configured to surround at least a portion of the movable portion 108, and the bottom cover 111 is configured to protect and limit the range of motion of the movable portion 108 in the first axial direction AX1 or the second axial direction AX2.

[0145] Please refer to Figures 4 to 6 . Figure 5 is a perspective view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure, and Figure 6 The optical element driving mechanism 100 according to an embodiment of the present disclosure is Figure 1 Section view of line segment BB.

[0146] like Figure 4 and Figure 6 As shown, the optical element driving mechanism 100 may further include a plurality of second guide members 130 disposed between the base 109 and the movable portion 108, and the movable portion 108 moves relative to the base 109 through the second guide members 130. In this embodiment, the optical element driving mechanism 100 may include four second guide members 130, but is not limited thereto.

[0147] Each of the second guiding members 130 may have a spherical structure, such as a ball, and the movable portion 108 may have four receiving grooves 108C configured to receive the second guiding members 130 respectively.

[0148] Please continue to refer to Figure 4 and Figure 5 In this embodiment, the optical element driving mechanism 100 may further include two first attracting elements AH1 disposed in the base 109. The first attracting element AH1 may be made of a magnetic material, such as a magnet, and the corresponding first guiding member 120 may be made of a metal material.

[0149] like Figure 5 As shown, a first magnetic attraction force AF1 can be generated between the first attraction element AH1 and the corresponding first guide member 120 to drive the base 109 to lean against the first guide member 120. Based on such a configuration, the movable assembly MA can be more stable when moving along the main axis MX.

[0150] It is worth noting that Figure 5 As shown, in this embodiment, the length LH of the first guide member 120 is greater than the length LT1 of the first attraction element AH1 on the main axis MX (Z axis). Based on such a design, the stability of the movable component MA when moving along the main axis MX can be further ensured. In addition, since the parameters (size, material) of the two first attraction elements AH1 are exactly the same, and the parameters (size, material) of the first guide member 120 are exactly the same, the two first magnetic forces AF1 are the same in magnitude and can be evenly applied to the base 109, making the movable component MA more stable when moving along the main axis MX.

[0151] Furthermore, please refer to Figure 4 , Figure 5 and Figure 7 . Figure 7 FIG. 1 is a bottom view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure. Figure 4 , Figure 5 and Figure 7 As shown, the optical element driving mechanism 100 may further include two second attracting elements AH2 disposed on the base 109 corresponding to the second magnetic element MG2. When viewed along the main axis MX, the two second attracting elements AH2 are arranged along the second axial direction AX2.

[0152] In this embodiment, if Figure 5 and Figure 7 As shown, when viewed along the main axis MX, each of the two second attraction elements AH2 has a long strip structure, and the extension direction of the second attraction element AH2 is different from the extension direction of the second magnetic element MG2. Specifically, the extension direction (first axial direction AX1) of the second attraction element AH2 is perpendicular to the extension direction (second axial direction AX2) of the second magnetic element MG2.

[0153] It is worth noting that when viewed along the main axis MX, the length LT2 of the second attraction element AH2 in the first axial direction AX1 is different from the width WT1 of the second magnetic element MG2 in the first axial direction AX1. Specifically, when viewed along the main axis MX, the length LT2 of the second attraction element AH2 in the first axial direction AX1 is greater than the width WT1 of the second magnetic element MG2 in the first axial direction AX1.

[0154] Similarly, the optical element driving mechanism 100 may further include two third attracting elements AH3 disposed on the base 109 corresponding to the third magnetic element MG3. When viewed along the main axis MX, the two third attracting elements AH3 are arranged along the first axial direction AX1.

[0155] In this embodiment, when viewed along the main axis MX, each of the two third attraction elements AH3 has a long strip structure, and the extension direction of the third attraction element AH3 is different from the extension direction of the third magnetic element MG3. Specifically, the extension direction (second axial direction AX2) of the third attraction element AH3 is perpendicular to the extension direction (first axial direction AX1) of the third magnetic element MG3.

[0156] Similarly, when viewed along the main axis MX, the length LT3 of the third attraction element AH3 in the second axial direction AX2 is different from the width WT2 of the third magnetic element MG3 in the second axial direction AX2. Specifically, when viewed along the main axis MX, the length LT3 of the third attraction element AH3 in the second axial direction AX2 is greater than the width WT2 of the third magnetic element MG3 in the second axial direction AX2.

[0157] In this embodiment, the second attraction element AH2 and the third attraction element AH3 may be magnetic conductive sheets, but are not limited thereto. Figure 5 As shown, each of the two second attracting elements AH2 can generate a second magnetic attraction force AF2 with the second magnetic element MG2, and each of the two third attracting elements AH3 is configured with the third magnetic element MG3 to generate a third magnetic attraction force AF3.

[0158] Based on such a configuration, the movable portion 108 can be suspended at the bottom of the base 109 , and the second guide member 130 can be clamped between the movable portion 108 and the base 109 , thereby making the movement of the movable portion 108 relative to the base 109 more stable.

[0159] In addition, since the length LT2 of the second attraction element AH2 is greater than the width WT1 of the second magnetic element MG2, and the length LT3 of the third attraction element AH3 is greater than the width WT2 of the third magnetic element MG3, it can be ensured that when the movable part 108 moves, the second magnetic attraction force AF2 and the third magnetic attraction force AF3 can remain stable, so that the movement of the movable part 108 along the XY plane can also be stable.

[0160] In addition, since the parameters (size, material) of the two second attraction elements AH2 are exactly the same, and the shortest distance between each second attraction element AH2 and a center point MGC2 of the second magnetic element MG2 is also the same, the two second magnetic forces AF2 are the same in magnitude and can be evenly applied to the movable part 108, making the movement of the movable part 108 relative to the base 109 more stable.

[0161] Similarly, since the parameters (size, material) of the two third attraction elements AH3 are exactly the same, and the shortest distance between each third attraction element AH3 and a center point MGC3 of the third magnetic element MG3 is also the same, the two third magnetic forces AF3 are the same in magnitude and can be evenly applied to the movable part 108, making the movement of the movable part 108 relative to the base 109 more stable.

[0162] Please refer to Figure 4 and Figure 8 . Figure 8 FIG. 1 is a top view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure. Figure 4 and Figure 8 As shown, each of these receiving grooves 108C has a circular structure when viewed along the main axis MX, and the size of the receiving groove 108C is larger than the size of the corresponding second guide member 130 when viewed along the main axis MX.

[0163] In this embodiment, the material of the second guiding members 130 may be different from the material of the movable portion 108 . Therefore, the Young's modulus of the second guiding members 130 may be different from the Young's modulus of the movable portion 108 .

[0164] Specifically, the Young's modulus of the second guide members 130 is more than ten times the Young's modulus of the movable portion 108. In this embodiment, the movable portion 108 may be made of plastic material, and the second guide members 130 may be made of ceramic material, but not limited thereto.

[0165] Please refer to Figure 3 , Figure 7 , Fig. 9 and Fig.10 . Fig. 9 is a perspective view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure, and Fig.10 FIG. 1 is a functional block diagram of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure. For the sake of clarity, Fig. 9 The base 112 is indicated by a dotted line, but this does not mean that it does not exist. Fig. 9As shown, the optical element driving mechanism 100 may further include a first driving circuit 117 and a second driving circuit 119 , which are disposed on the second circuit component 116 and the third circuit component 118 , respectively.

[0166] like Fig.10 As shown, the first driving circuit 117 is electrically connected to the first driving element CL1, and the second driving circuit 119 is electrically connected to the second driving element CL2, the third driving element CL3 and the fourth driving element CL4. In this embodiment, the first driving circuit 117 is, for example, an All-In-One IC, and the second driving circuit 119 is, for example, a driver IC, but is not limited thereto.

[0167] Furthermore, if Figure 3 As shown, the optical element driving mechanism 100 further includes a plurality of first conductive members 105 disposed in a base 109, and the second circuit component 116 is electrically connected to the third circuit component 118 via these first conductive members 105. The first conductive members 105 are disposed in the base 109 by, for example, an insert injection molding technique. Based on such a configuration, the first driving circuit 117 can be electrically connected to the second driving circuit 119 via the second circuit component 116, these first conductive members 105, and the third circuit component 118.

[0168] Then as Figure 7 and Fig. 9 As shown, the optical element driving mechanism 100 further includes a plurality of second conductive members 107 disposed in the base 109. Furthermore, the optical element driving mechanism 100 of this embodiment includes four elastic members 106, which are movably connected between the base 109 and the base 112, and the elastic members 106 can be made of metal. Therefore, the third circuit component 118 can be electrically connected to the four elastic members 106 via the four second conductive members 107. For example, the ends of the second conductive members 107 can be welded to the corresponding elastic members 106.

[0169] The optical element driving mechanism 100 may further include a plurality of third conductive members 113, which are partially disposed in the base 112. In this embodiment, the second conductive member 107 and the third conductive member 113 may be made of metal material, and may be disposed on the base 109 and the base 112 respectively by insert injection molding technology. One end of each third conductive member 113 may be exposed from the base 112 and may be welded to the corresponding elastic element 106, and the other end of each third conductive member 113 is electrically connected to an external control circuit.

[0170] Based on such a configuration, the second conductive members 107, the elastic elements 106 and the third conductive members 113 can form a plurality of external circuits (eg, four circuits). Thus, the first drive circuit 117 and the second drive circuit 119 can share these external circuits. Fig.10 As shown, the first driving circuit 117 and the second driving circuit 119 can be electrically connected to the external control circuit via these external lines. The external control circuit is, for example, a control circuit or a control chip of an electronic device, but is not limited thereto.

[0171] The first driving circuit 117 can control the actuation of the first driving element CL1 according to a first control signal CS1 sent by the external control circuit, and the second driving circuit 119 can control the actuation of the second driving element CL2, the third driving element CL3 and the fourth driving element CL4 according to a second control signal CS2 sent by the external control circuit.

[0172] Furthermore, in this embodiment, since the first driving circuit 117 is a multifunctional integrated circuit, the first driving circuit 117 can be used as a sensor configured to sense the movement of the movable element MA relative to the base 112. Then, the first driving circuit 117 controls the first driving element CL1 according to the sensing result and the first control signal CS1.

[0173] In addition, if Fig. 9 and Fig.10 As shown, the optical element driving mechanism 100 may further include a first sensor SE1 , a second sensor SE2 and a third sensor SE3 , which are electrically connected to the second driving circuit 119 , and the first sensor SE1 , the second sensor SE2 and the third sensor SE3 are disposed on the third circuit component 118 .

[0174] The first sensor SE1 is configured to sense movement of the movable part 108 relative to the base 109 along the first axis AX1, the second sensor SE2 is configured to sense movement of the movable part 108 relative to the base 109 along the second axis AX2, and the third sensor SE3 is configured to sense rotation of the movable part 108 relative to the base 109 around the main axis MX.

[0175] The second driving circuit 119 controls the second driving element CL2, the third driving element CL3 and the fourth driving element CL4 according to the sensing results of the first sensor SE1, the second sensor SE2 and the third sensor SE3 and the second control signal CS2. The first sensor SE1, the second sensor SE2 and the third sensor SE3 are, for example, Hall sensors, but are not limited thereto.

[0176] Please refer to Fig.11 . Fig.11FIG. 1 is a schematic front view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure. Fig.11 As shown, the first optical module 200 is detachably connected to the housing 102 , and the first optical module 200 has the aforementioned optical element OE (also referred to as the first optical element) and two first driving components 202 , 204 .

[0177] The first driving components 202 and 204 are configured to drive the first optical element to move along the optical axis O1 of the optical element OE relative to the housing 102. The optical axis O1 may overlap the optical axis O. The first driving component 202 is, for example, a winding coil, and the first driving component 204 is, for example, a magnet, but is not limited thereto.

[0178] Furthermore, the optical element driving mechanism 100 may further include a second optical module 300 and a connecting member 101 . The second optical module 300 is detachably connected to the housing 102 via the connecting member 101 , and the second optical module 300 may surround at least a portion of the first optical module 200 .

[0179] The second optical module 300 may have a plurality of blades 301 to form an aperture structure, thereby adjusting the amount of incident light. Furthermore, the connecting member 101 may be disposed on the housing 102 by an injection molding technique. For example, the housing 102 is made of a metal material, and the connecting member 101 is made of a plastic material, but is not limited thereto. For example, the connecting member 101 may also be made of a rubber material.

[0180] The present disclosure provides an optical element driving mechanism 100, comprising a fixed component FA, a movable component MA and a driving module DM. The movable component MA is configured to be connected to an optical element 115, and the driving module DM is configured to drive the movable component MA to move relative to the fixed component FA. The driving module DM may include a first driving component DA1, configured to drive the movable component MA to move relative to the fixed component FA along the optical axis O to achieve the purpose of autofocus.

[0181] In some embodiments, the optical element driving mechanism 100 may further include two first guide members 120 disposed between the base 112 and the movable assembly MA, and configured to guide the movable assembly MA to move along the main axis MX relative to the base 112. The optical element driving mechanism 100 may further include two first attraction elements AH1 disposed in the base 109 of the movable assembly MA. A first magnetic attraction force AF1 may be generated between the first attraction element AH1 and the corresponding first guide member 120 to drive the base 109 to bear against the first guide member 120. Based on such a configuration, the movable assembly MA can be made more stable when moving along the main axis MX.

[0182] In addition, the optical element driving mechanism 100 may further include a plurality of second guide members 130, the movable assembly MA may have the aforementioned base 109 and a movable portion 108, and the movable portion 108 may move relative to the base 109 through the second guide member 130. The driving module DM may include a second driving assembly DA2 and a third driving assembly DA3, which are partially disposed on the base 109. When the optical element driving mechanism 100 is shaken, the second driving assembly DA2 and the third driving assembly DA3 may drive the movable portion 108 to move on the XY plane to achieve the purpose of optical image stabilization.

[0183] Although the embodiments and advantages of the present disclosure have been disclosed as above, it should be understood that those skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufactures, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any technician in the relevant technical field can understand the current or future developed processes, machines, manufactures, material compositions, devices, methods and steps from the disclosure of the present disclosure. As long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, comprising: a fixing component; a movable component configured to be connected to an optical element and movable relative to the fixed component; and A driving module is configured to drive the movable component to move relative to the fixed component.

2. The optical element driving mechanism according to claim 1, wherein The fixing assembly includes a housing and a base; The housing and the base are arranged along a main axis; The optical element driving mechanism also includes a first circuit component; The first circuit assembly has a main body, and the optical element is disposed on the main body; The main body is connected to the movable component; The first circuit assembly also has a cantilever connected between the main body and the housing; The driving module is configured to drive the movable component, the main body and the optical element to move; The driving module includes a first driving component configured to drive the movable component to move along the main axis; The movable assembly includes a base and a movable part; The driving module further includes a second driving assembly configured to drive the movable portion to move relative to the base along a first axial direction; The driving module further includes a third driving assembly configured to drive the movable portion to move relative to the base along a second axial direction; The first axial direction is perpendicular to the main axis; The second axial direction is perpendicular to the first axial direction and the main axis.

3. The optical element driving mechanism according to claim 2, wherein The optical element driving mechanism also includes a second circuit component fixedly disposed on the movable component; The second circuit component is disposed on a side wall of the base; The first driving component includes a first magnetic element and a first driving element; One of the first magnetic element and the first driving element is disposed on the second circuit component, and the other of the first magnetic element and the first driving element is correspondingly disposed on the base; The first driving element is configured to induce a first electromagnetic driving force with the first magnetic element to drive the movable component to move along the main axis; The optical element driving mechanism also includes a third circuit assembly disposed on a bottom plate of the base; The second driving component includes a second magnetic element and a second driving element; One of the second magnetic element and the second driving element is disposed on the third circuit component, and the other of the second magnetic element and the second driving element is correspondingly disposed on the movable portion; The second driving element is configured to induce a second electromagnetic driving force with the second magnetic element to drive the movable portion to move relative to the base along the first axial direction; The third driving assembly includes a third magnetic element and a third driving element; One of the third magnetic element and the third driving element is disposed on the third circuit component, and the other of the third magnetic element and the third driving element is correspondingly disposed on the movable portion; The third driving element is configured to induce a third electromagnetic driving force with the third magnetic element to drive the movable portion to move relative to the base along the second axial direction.

4. The optical element driving mechanism according to claim 3, wherein The driving module also includes a fourth driving component; The fourth driving assembly includes a fourth driving element; The fourth driving element is disposed on the third circuit component or the movable part; The fourth driving element is configured to induce a fourth electromagnetic driving force with the second magnetic element; When the second electromagnetic driving force is opposite to the fourth electromagnetic driving force, the second electromagnetic driving force and the fourth electromagnetic driving force are configured to drive the movable part to rotate around the main axis; The optical element driving mechanism further includes a first driving circuit and a second driving circuit, which are respectively disposed on the second circuit component and the third circuit component; The first driving circuit is electrically connected to the first driving element; The second driving circuit is electrically connected to the second driving element, the third driving element and the fourth driving element; The optical element driving mechanism also includes a plurality of first conductive members disposed in the base; The second circuit component is electrically connected to the third circuit component via a plurality of the first conductive components; The first driving circuit is electrically connected to the second driving circuit via the first conductive components and the third circuit element; The optical element driving mechanism further includes a plurality of second conductive members disposed in the base; The optical element driving mechanism further includes a plurality of elastic elements movably connected between the base and the base; The third circuit component is electrically connected to the plurality of elastic elements via the plurality of the second conductive components; The optical element driving mechanism also includes a plurality of third conductive members, which are partially disposed in the base; A plurality of the second conductive members, a plurality of the elastic elements and a plurality of the third conductive members form a plurality of external connection lines; The first driving circuit and the second driving circuit share a plurality of external connection lines.

5. The optical element driving mechanism according to claim 4, wherein The first driving circuit and the second driving circuit are electrically connected to an external control circuit via a plurality of external connection lines; The first driving circuit controls the actuation of the first driving element according to a first control signal sent by the external control circuit; The second driving circuit controls the actuation of the second driving element, the third driving element and the fourth driving element according to a second control signal sent by the external control circuit; The first drive circuit is configured to sense movement of the movable component relative to the base; The optical element driving mechanism further includes a first sensor, a second sensor and a third sensor, which are electrically connected to the second driving circuit; The first sensor, the second sensor and the third sensor are disposed on the third circuit component; The first sensor is configured to sense the movement of the movable portion relative to the base along the first axial direction; The second sensor is configured to sense the movement of the movable portion relative to the base along the second axial direction; The third sensor is configured to sense the rotation of the movable portion relative to the base around the main axis.

6. The optical element driving mechanism according to claim 3, wherein The optical element driving mechanism further includes a first guiding component disposed between the base and the movable component; The first guide member is configured to guide the movable component to move along the main axis; The optical element driving mechanism further includes a first attraction element disposed on the base; The first attraction element is made of a magnetic material; The first guiding component is made of metal material; A first magnetic attraction force is generated between the first attraction element and the first guide component to drive the base to bear against the first guide component; The first guiding component has a long strip structure; The length of the first guiding component is greater than the length of the first attracting element on the main shaft.

7. The optical element driving mechanism according to claim 6, wherein The optical element driving mechanism further comprises at least one second attraction element, which is disposed on the base and corresponds to the second magnetic element; When viewed along the main axis, the second attracting element has a long strip structure; The extension direction of the second attraction element is different from the extension direction of the second magnetic element; The extension direction of the second attraction element is perpendicular to the extension direction of the second magnetic element; When viewed along the main axis, the length of the second attraction element in the first axial direction is different from the width of the second magnetic element in the first axial direction; When viewed along the main axis, the length of the second attraction element in the first axial direction is greater than the width of the second magnetic element in the first axial direction; The second attracting element and the second magnetic element are configured to generate a second magnetic attraction force.

8. The optical element driving mechanism according to claim 7, wherein The optical element driving mechanism further comprises at least one third attraction element, which is disposed on the base and corresponds to the third magnetic element; When viewed along the main axis, the third attracting element has a long strip structure; The extension direction of the third attraction element is different from the extension direction of the third magnetic element; The extension direction of the third attraction element is perpendicular to the extension direction of the third magnetic element; When viewed along the main axis, the length of the third attraction element in the second axial direction is different from the width of the third magnetic element in the second axial direction; When viewed along the main axis, the length of the third attraction element in the second axial direction is greater than the width of the third magnetic element in the second axial direction; The third attracting element and the third magnetic element are configured to generate a third magnetic attraction force.

9. The optical element driving mechanism according to claim 8, wherein The optical element driving mechanism further comprises a plurality of second guiding components, which are arranged between the base and the movable part; The movable part moves relative to the base through a plurality of the second guide components; The movable portion has a plurality of accommodating grooves configured to respectively accommodate a plurality of the second guiding components; When viewed along the main axis, each of the plurality of receiving grooves has a circular structure; Each of the plurality of second guide members has a spherical structure; When viewed along the main axis, the size of the receiving groove is larger than the corresponding size of the second guide member; The material of the plurality of second guide components is different from the material of the movable part; The Young's modulus of the plurality of second guide members is different from the Young's modulus of the movable portion; The Young's modulus of the plurality of second guide members is more than ten times the Young's modulus of the movable portion; The movable part is made of plastic material; The plurality of second guide members are made of ceramic material.

10. The optical element driving mechanism according to claim 1, wherein The optical element driving mechanism also includes a first optical module detachably connected to a housing of the fixing assembly; The first optical module has a first optical element and at least one first driving component; The first driving member is configured to drive the first optical element to move relative to the housing along an optical axis of the first optical element; The optical element driving mechanism also includes a second optical module and a connecting member; The second optical module is detachably connected to the housing via the connecting member; The second optical module surrounds at least a portion of the first optical module; The second optical module has an aperture structure; The connecting member is arranged on the housing by insert injection molding technology; The housing is made of metal; The connecting component is made of plastic material.

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