Optical element driving mechanism

Abstract

The utility model 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 particularly to a lightweight and miniaturized optical element driving mechanism. Background Art

[0002] With the development of technology, many current electronic devices (such as smart phones) have functions of taking pictures or videos. Through the camera module provided on the electronic device, users can operate the electronic device to capture various photos.

[0003] The design of current electronic devices is continuously trending towards miniaturization, such that various components or their structures of the camera module 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 functions of auto focusing or optical image stabilization. However, although the existing driving mechanism can achieve the aforementioned functions of taking pictures or videos, it still cannot meet all requirements.

[0004] Therefore, how to design a camera module that can simultaneously perform auto focusing, optical image stabilization and achieve miniaturization is a topic worthy of exploration and solution today. Summary of the Utility Model

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

[0006] 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 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 fixing component includes a housing and a base. The housing and the base are arranged along a main axis. The optical element driving mechanism further includes a first circuit component. The first circuit component has a body portion, and the optical element is disposed on the body portion. The body portion is connected to the movable component. The first circuit component further has a cantilever connected between the body portion and the housing. The driving module is configured to drive the movable component, the body portion, 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 component includes a base and a movable portion. The driving module further includes a second driving component 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 component 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.

[0008] According to some embodiments of the present disclosure, the optical element driving mechanism further 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 further 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 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 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 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.

[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 inductively generate 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 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 disposed in the base. The optical element driving mechanism further includes a plurality of elastic elements movably connected between the base and the base plate. The third circuit component is electrically connected to these elastic elements via these second conductive members. The optical element driving mechanism further includes a plurality of third conductive members partially disposed in the base plate. These second conductive members, these elastic elements, and these third conductive members form a plurality of external connection lines. The first driving circuit and the second driving circuit share these external connection lines.

[0010] According to some embodiments of the present disclosure, the first driving circuit and the second driving circuit are electrically connected to an external control circuit via these 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 driving circuit is configured to sense the movement of the movable assembly relative to the base plate. 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 part relative to the base along a first axial direction. The second sensor is configured to sense the movement of the movable part relative to the base along a second axial direction. The third sensor is configured to sense the rotation of the movable part relative to the base around the main axis.

[0011] According to some embodiments of the present disclosure, the optical element driving mechanism further includes a first guiding member disposed between the base and the movable component. The first guiding member is configured to guide the movable component to move along the main axis. The optical element driving mechanism further includes a first attracting element disposed on the base. The first attracting element is made of a magnetic attracting material. The first guiding member is made of a metal material. A first magnetic attraction force is generated between the first attracting element and the first guiding member to drive the base to abut against the first guiding member. The first guiding member has a strip-like structure. The length of the first guiding member is greater than the length of the first attracting element on the main axis.

[0012] According to some embodiments of the present disclosure, the optical element driving mechanism further includes at least one second attracting element disposed on the base corresponding to the second magnetic element. When observed along the main axis, the second attracting element has a strip-like structure. The extending direction of the second attracting element is different from the extending direction of the second magnetic element. The extending direction of the second attracting element is perpendicular to the extending direction of the second magnetic element. When observed along the main axis, the length of the second attracting 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 attracting 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.

[0013] According to some embodiments of the present disclosure, the optical element driving mechanism further includes at least one third attracting element disposed on the base corresponding to the third magnetic element. When observed along the main axis, the third attracting element has a strip-like structure. The extending direction of the third attracting element is different from the extending direction of the third magnetic element. The extending direction of the third attracting element is perpendicular to the extending direction of the third magnetic element. When observed along the main axis, the length of the third attracting 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 attracting 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.

[0014] According to some embodiments of the present disclosure, the optical element driving mechanism further includes a plurality of second guiding members disposed between the base and the movable part. The movable part moves relative to the base through these second guiding members. The movable part has a plurality of receiving grooves configured to respectively receive these second guiding members. When viewed along the main axis, each of these receiving grooves has a circular structure. Each of these second guiding members has a spherical structure. When viewed along the main axis, the size of the receiving groove is larger than the size of the corresponding second guiding member. The material of these second guiding members is different from the material of the movable part. The Young's modulus of these second guiding members is different from the Young's modulus of the movable part. The Young's modulus of these second guiding members is more than ten times that of the movable part. The movable part is made of a plastic material. These second guiding members are made of a ceramic material.

[0015] According to some embodiments of the present disclosure, the optical element driving mechanism further includes a first optical module detachably connected to a housing of the fixed 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 further 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 part of the first optical module. The second optical module has an aperture structure. The connecting member is disposed on the housing by an insert molding technique. The housing is made of a metal material. The connecting member is made of a plastic material.

[0016] 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. Among them, 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 guiding members disposed between the base and the movable component and 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 attracting elements disposed in a base of the movable component. A first magnetic attraction force may be generated between the first attracting element and the corresponding first guiding member to drive the base to abut against the first guiding member. Based on such a configuration, the movable component can move more stably along the main axis.

[0018] In addition, the optical element driving mechanism may further include a plurality of second guiding members. The movable component may have the aforementioned base and a movable portion, and the movable portion may move relative to the base through the second guiding members. 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 X-Y plane to achieve the purpose of optical image stabilization.

[0019] The beneficial effects of the present disclosure are as follows. 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. Among them, the driving module may include a first driving component, configured to drive the movable component to move along the optical axis relative to the fixed component to achieve the purpose of autofocus. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present disclosure can be clearly understood through the following detailed description and in conjunction with the drawings. It should be emphasized that, in accordance with the standard practice in the industry, the various features are not drawn to scale and are for illustrative purposes only. In fact, for the sake of clear illustration, the dimensions of the various features may be arbitrarily enlarged or reduced.

[0021] Figure 1 FIG. 12 is a perspective view of an optical element driving mechanism according to an embodiment of the present disclosure.

[0022] Figure 2 FIG. 16 is an exploded view of an optical element driving mechanism according to an embodiment of the present disclosure.

[0023] Figure 3 FIG. 20 is a cross-sectional view of the optical element driving mechanism according to an embodiment of the present disclosure along line A-A in FIG. Figure 1 22.

[0024] Figure 4 FIG. 26 is an exploded view of a movable component according to an embodiment of the present disclosure.

[0025] Figure 5 FIG. 30 is a perspective view of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0026] Figure 6 FIG. 34 is a cross-sectional view of the optical element driving mechanism according to an embodiment of the present disclosure along line B-B in FIG. Figure 1 36.

[0027] Figure 7 FIG. 40 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 The top view of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

[0029] Figure 9 The perspective view of a partial structure of an optical element driving mechanism according to an embodiment of the present disclosure.

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

[0031] Figure 11 The 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 member

[0035] 102: Housing

[0036] 1021: Housing opening

[0037] 1023: Accommodating space

[0038] 105: First conductive member

[0039] 106: Elastic element

[0040] 107: Second conductive member

[0041] 108: Movable part

[0042] 108C: Four receiving grooves

[0043] 109: Base

[0044] 1090: Bottom plate

[0045] 109W: Side wall

[0046] 111: Bottom cover

[0047] 112: Base

[0048] 1121: Base opening

[0049] 113: Third conductive member

[0050] 114: First circuit component

[0051] 1140: Body part

[0052] 1141: Cantilever

[0053] 1142: Cantilever

[0054] 115: Optical element

[0055] 116: Second circuit component

[0056] 117: First drive circuit

[0057] 118: Third circuit component

[0058] 119: Second drive circuit

[0059] 120: First guiding component

[0060] 130: Second guiding component

[0061] 200: First optical module

[0062] 202: First driving member

[0063] 204: First driving member

[0064] 300: Second optical module

[0065] 301: Vane

[0066] AF1: First magnetic suction force

[0067] AF2: Second magnetic suction force

[0068] AF3: Third magnetic suction force

[0069] AH1: First attracting element

[0070] AH2: Second attracting element

[0071] AH3: Third attracting element

[0072] AX1: First axial direction

[0073] AX2: Second axial direction

[0074] CL1: First driving element

[0075] CL2: Second driving element

[0076] CL3: Third driving element

[0077] CL4: Fourth driving element

[0078] CS1: First control signal

[0079] CS2: Second control signal

[0080] DA1: First driving assembly

[0081] DA2: Second driving component

[0082] DA3: Third driving component

[0083] DA4: Fourth driving component

[0084] DM: Driving component

[0085] F1: First electromagnetic driving force

[0086] F2: Second electromagnetic driving force

[0087] F3: Third electromagnetic driving force

[0088] F4: Fourth electromagnetic driving force

[0089] FA: Fixed component

[0090] LH: Length

[0091] LT1: Length

[0092] LT2: Length

[0093] LT3: Length

[0094] MA: Moving component

[0095] MG1: First magnetic element

[0096] MG2: Second magnetic element

[0097] MGC2: Center point

[0098] MG3: Third magnetic element

[0099] MGC3: Center point

[0100] MX: Main shaft

[0101] O: Optical axis

[0102] O1: Optical axis

[0103] OE: Optical element

[0104] SE1: First sensor

[0105] SE2: Second sensor

[0106] SE3: Third sensor

[0107] WT1: Width

[0108] WT2: Width

[0109] X: X-axis

[0110] Y: Y-axis

[0111] Z: Z - axis Detailed implementation manners

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

[0113] In addition, repeated reference numerals or labels may be used in different embodiments. These repetitions are only for simply and clearly describing the present disclosure and do not represent a specific relationship between the different embodiments and / or structures being discussed. Further, forming, connecting to, and / or coupling to another feature component on another feature component in the present disclosure may include embodiments where the feature components are formed in direct contact, and may also include embodiments where additional feature components may be formed to insert between the above - mentioned feature components, such that the above - mentioned feature components may not be in direct contact. In addition, spatially - related terms may be used, such as "vertical", "above", "on", "under", "bottom" and similar terms (such as "downwardly", "upwardly", etc.). These spatially - related terms are for facilitating the description of the relationship between one (or some) element or feature and another (or some) element or feature in the drawings. These spatially - related terms are intended to cover different orientations of the device including the features.

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

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

[0116] In addition, in some embodiments of the present disclosure, terms related to joining and connection, such as "connect" and "interconnect", unless specifically defined, may refer to two structures being in direct contact, or may also refer to two structures not being in direct contact, with other structures disposed between these two structures. And these terms related to joining and connection may also include cases where both structures are movable, or both structures are fixed.

[0117] Please refer to Figures 1 to 3 , Figure 1 a three-dimensional schematic view of an optical element driving mechanism 100 according to an embodiment of the present disclosure, Figure 2 an exploded view of an optical element driving mechanism 100 according to an embodiment of the present disclosure, and Figure 3 a cross-sectional view of the optical element driving mechanism 100 along the Figure 1 line A-A in. The optical element driving mechanism 100 may be an optical imaging module configured to carry and drive at least one optical element. The optical element driving mechanism 100 can be installed in various electronic devices or portable electronic devices, such as being disposed in a smart phone for a user to perform an image capture function. 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 thereto. 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, as Figure 2 shown, the fixed component 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 further include a first optical module 200 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] As 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 part of the first circuit component 114 is fixed to the housing 102, and another part of the first circuit component 114 is connected to the movable component MA. The first circuit component 114 is, for example, a flexible printed circuit board, and the optical element 115 is, for example, a photosensitive element, but is not limited thereto.

[0121] As Figure 2 shown, the aforementioned housing 102 has a hollow structure, and a housing opening 1021 is formed thereon. 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, pass through the optical element OE and the base opening 1121, and then be received by the aforementioned optical element 115 to generate a digital image signal.

[0122] Furthermore, when the housing 102 is disposed on the base 112, an accommodating space 1023 can be formed to accommodate a part of the movable component MA, the driving module DM, and the first circuit component 114.

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

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

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

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

[0127] In this embodiment, as Figure 2 and Figure 3 shown, the optical element driving mechanism 100 may further include a second circuit component 116, which is fixedly disposed on the movable component MA. The second circuit component 116 is, for example, a flexible printed 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 wound coil, but is not limited thereto. The first driving element CL1 is configured to interact with the first magnetic element MG1 to generate a first electromagnetic driving force F1 to drive the movable component MA to move back and forth along the main axis MX.

[0130] In addition, as Figure 2 and Figure 3 shown, the optical element driving mechanism 100 further includes a plurality of elastic elements 106, which are movably connected between the movable component MA and the base 112. Accordingly, the movable component MA can be suspended in the accommodation space 1023 by the elastic elements 106.

[0131] Next, please refer to Figures 2 to 4 , Figure 4 which is an exploded view of the movable component MA according to an embodiment of the present disclosure. In this embodiment, the movable component MA may include a base 109 and a movable part 108, and as Figure 4 shown, the second circuit component 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, which is fixedly disposed on a bottom plate 1090 of the base 109. Similarly, the third circuit component 118 is, for example, a flexible printed circuit board, but is not limited thereto.

[0133] As Figure 4 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 wound coil, but is not limited thereto.

[0134] Among them, the second magnetic element MG2 is fixedly disposed on the movable part 108, and the second driving element CL2 is disposed on the third circuit component 118, but not limited thereto. In other embodiments, the positions of the second magnetic element MG2 and the second driving element CL2 may be interchanged.

[0135] The second driving element CL2 is configured to interact with the second magnetic element MG2 to generate a second electromagnetic driving force F2 to drive the movable part 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 shaft 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 not limited thereto.

[0137] Among them, the third magnetic element MG3 is fixedly disposed on the movable part 108, and the third driving element CL3 is disposed on the third circuit component 118, but not limited thereto. In other embodiments, the positions of the third magnetic element MG3 and the third driving element CL3 may be interchanged.

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

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

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

[0141] In this embodiment, the currents supplied to the fourth driving element CL4 and the second driving element CL2 may be the same or opposite. For example, as Figure 4As shown, in this embodiment, the magnitude of the fourth electromagnetic driving force F4 is the same as that of the second electromagnetic driving force F2, but their directions are opposite.

[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 part 108 to rotate relative to the base 109 about the main shaft MX.

[0143] On the other hand, when the magnitudes and directions of the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 are the same, the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 can jointly drive the movable part 108 to move along the first axial direction AX1.

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

[0145] Next, please refer to Figures 4 to 6 . Figure 5 FIG. is a perspective view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present disclosure, and Figure 6 FIG. is a cross-sectional view of the optical element driving mechanism 100 according to an embodiment of the present disclosure along the Figure 1 B-B line segment in

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

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

[0148] Next, 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, which are disposed in the base 109. Among them, the first attracting element AH1 may be made of a magnetic attracting material, such as a magnet, and the corresponding first guiding member 120 may be made of a metal material.

[0149] AsFigure 5 As shown, a first magnetic attraction force AF1 can be generated between the first attraction element AH1 and the corresponding first guiding member 120 to drive the base 109 to rest against the first guiding member 120. Based on such a configuration, the moving assembly MA can move more stably along the main shaft MX.

[0150] It should be noted that, as Figure 5 shown, in this embodiment, the length LH of the first guiding member 120 is greater than the length LT1 of the first attraction element AH1 on the main shaft MX (Z-axis). Based on such a design, the stability of the moving assembly MA moving along the main shaft MX can be further ensured. In addition, since the parameters (dimensions, materials) of the two first attraction elements AH1 are completely the same, and the parameters (dimensions, materials) of the first guiding member 120 are completely the same, the magnitudes of the two first magnetic attraction forces AF1 are the same and can be evenly applied to the base 109, making the moving assembly MA move more stably along the main shaft MX.

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

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

[0153] It should be noted that when viewed along the main shaft 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 shaft 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 elements 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 attracting elements AH3 has an elongated structure, and the extending direction of the third attracting element AH3 is different from the extending direction of the third magnetic element MG3. Specifically, the extending direction (second axial direction AX2) of the third attracting element AH3 is perpendicular to the extending 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 attracting 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 attracting 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 attracting element AH2 and the third attracting element AH3 may be magnetic conductive sheets, but are not limited thereto. As Figure 5 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 and the third magnetic element MG3 are configured to generate a third magnetic attraction force AF3.

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

[0159] In addition, since the length LT2 of the second attracting element AH2 is greater than the width WT1 of the second magnetic element MG2, and the length LT3 of the third attracting 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 be maintained stable, so that the movement of the movable part 108 along the XY plane can also be stable.

[0160] In addition, since the parameters (dimensions, materials) of the two second attracting elements AH2 are exactly the same, and the shortest distance between each second attracting element AH2 and a center point MGC2 of the second magnetic element MG2 is also the same, the magnitudes of the two second magnetic attractions AF2 are the same 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 (dimensions, materials) of the two third attracting elements AH3 are exactly the same, and the shortest distance between each third attracting element AH3 and a center point MGC3 of the third magnetic element MG3 is also the same, the magnitudes of the two third magnetic attractions AF3 are the same 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] Next, please refer to Figure 4 and Figure 8 . Figure 8 is a top view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present disclosure. As Figure 4 and Figure 8 shown, when viewed along the main axis MX, each of these receiving grooves 108C has a circular structure, and when viewed along the main axis MX, the size of the receiving groove 108C is larger than the size of the corresponding second guiding member 130.

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

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

[0165] Next, please refer to Figure 3 , Figure 7 , Figure 9 and Figure 10 . Figure 9 is a perspective view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present disclosure, and Figure 10 is a functional block diagram of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present disclosure. For the sake of clear representation, Figure 9 the base 112 in Figure 9As shown, the optical element driving mechanism 100 may further include a first driving circuit 117 and a second driving circuit 119, which are respectively disposed on the second circuit component 116 and the third circuit component 118.

[0166] As Figure 10 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, as Figure 3 shown, the optical element driving mechanism 100 further includes a plurality of first conductive members 105 disposed in the 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, for example, disposed in the base 109 by insert molding technology. 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] Next, as Figure 7 and Figure 9 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 elements 106 that are movably connected between the base 109 and the base 112, and the elastic elements 106 can be made of a metal material. Therefore, the third circuit component 118 can be electrically connected to the four elastic elements 106 via the four second conductive members 107 respectively. For example, the end of the second conductive member 107 can be welded to the corresponding elastic element 106.

[0169] The optical element driving mechanism 100 may further include a plurality of third conductive members 113 that are partially disposed in the base 112. In this embodiment, the second conductive members 107 and the third conductive members 113 can be made of a metal material and can be respectively disposed in the base 109 and the base 112 by insert molding technology. Wherein, one end of each third conductive member 113 can be exposed from the base 112 and can 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, these second conductive members 107, these elastic elements 106, and these third conductive members 113 can form multiple external connection lines (e.g., four lines). Thus, the first drive circuit 117 and the second drive circuit 119 can share these external connection lines. That is, as Figure 10 shown, the first drive circuit 117 and the second drive circuit 119 can be electrically connected to the external control circuit via these external connection 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 drive circuit 117 can control the operation of the first drive element CL1 according to a first control signal CS1 sent by the external control circuit, and the second drive circuit 119 controls the operation of the second drive element CL2, the third drive element CL3, and the fourth drive element CL4 according to a second control signal CS2 sent by the external control circuit.

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

[0173] In addition, as Figure 9 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 drive circuit 119, and the first sensor SE1, the second sensor SE2, and the third sensor SE3 are disposed on the third circuit component 118. Figure 10 The first sensor SE1 is configured to sense the movement of the movable part 108 relative to the base 109 along the first axial direction AX1, the second sensor SE2 is configured to sense the movement of the movable part 108 relative to the base 109 along the second axial direction AX2, and the third sensor SE3 is configured to sense the rotation of the movable part 108 relative to the base 109 about the main axis MX.

[0174] The second drive circuit 119 controls the second drive element CL2, the third drive element CL3, and the fourth drive 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. Among them, the first sensor SE1, the second sensor SE2, and the third sensor SE3 are, for example, Hall sensors, but are not limited thereto.

[0175]

[0176] Next, please refer to Figure 11 Figure 11 . Figure 11The figure is a front view schematic diagram of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure. As Figure 11 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 members 202, 204.

[0177] The first driving members 202, 204 are configured to drive the first optical element to move relative to the housing 102 along the optical axis O1 of the optical element OE. Among them, the optical axis O1 can overlap with the aforementioned optical axis O. The first driving member 202 is, for example, a winding coil, and the first driving member 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 can surround at least a part of the first optical module 200.

[0179] The second optical module 300 may have a plurality of vanes 301 to form a diaphragm structure, thereby adjusting the amount of incident light. Furthermore, the connecting member 101 can be disposed on the housing 102 by means of insert molding technology. 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 can also be made of a rubber material.

[0180] The present disclosure provides an optical element driving mechanism 100, including 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. Among them, 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 guiding components 120, disposed between the base 112 and the movable component MA, configured to guide the movable component MA to move relative to the base 112 along the main axis MX. The optical element driving mechanism 100 may further include two first attracting elements AH1, disposed within the base 109 of the movable component MA. A first magnetic attraction force AF1 may be generated between the first attracting element AH1 and the corresponding first guiding component 120 to drive the base 109 to abut against the first guiding component 120. Based on such a configuration, the movable component MA can move more stably along the main axis MX.

[0182] In addition, the optical element driving mechanism 100 may further include a plurality of second guiding 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 guiding members 130. The driving module DM may include a second driving component DA2 and a third driving component DA3, which are partially disposed on the base 109. When the optical element driving mechanism 100 is shaken, the second driving component DA2 and the third driving component DA3 may drive the movable portion 108 to move on the X-Y plane, so as to achieve the purpose of optical image stabilization.

[0183] Although the embodiments of the present disclosure and their advantages have been disclosed above, it should be understood that those skilled in the art can make changes, substitutions, and modifications without departing from the spirit and scope of the present disclosure. In addition, the protection scope of the present disclosure is not limited to the processes, machines, manufactures, compositions of matter, devices, methods, and steps in the specific embodiments described in the specification. Any person skilled in the art can understand the processes, machines, manufactures, compositions of matter, devices, methods, and steps developed currently or in the future from the disclosure of the present disclosure. As long as they can perform 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 protection scope of the present disclosure includes the above-mentioned processes, machines, manufactures, compositions of matter, devices, methods, and steps. In addition, each claim constitutes an individual embodiment, and the protection scope of the present disclosure also includes the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, characterized in that, Comprising: A fixed component; A movable component configured to be connected to an optical element, and the movable component is movable relative to the fixed component; And A driving module configured to drive the movable component to move relative to the fixed component; The fixed component includes a housing and a base; The housing and the base are arranged along a main axis; The driving module includes a first driving component configured to drive the movable component to move along the main axis; The first driving component includes a first magnetic element and a first driving element; The movable component includes a base and a movable part; The driving module further includes a second driving component configured to drive the movable part to move along a first axial direction relative to the base; The first axial direction is perpendicular to the main axis; The second driving component includes a second magnetic element and a second driving element; The driving module further includes a third driving component configured to drive the movable part to move along a second axial direction relative to the base; The third driving component includes a third magnetic element and a third driving element; The second axial direction is perpendicular to the first axial direction and the main axis; When observed along the second axial direction, the first driving component overlaps the second driving component and the third driving component.

2. The optical element driving mechanism according to claim 1, wherein The optical element driving mechanism further includes a first circuit component; The first circuit component has a body part, and the optical element is disposed on the body part; The body part is connected to the movable component; The first circuit component further has a cantilever connected between the body part and the housing; The driving module is configured to drive the movable component, the body part, and the optical element to move.

3. The optical element driving mechanism according to claim 2, wherein The optical element driving mechanism further includes a second circuit component fixedly disposed on the movable component; The second circuit component is disposed on a side wall of the base; 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 inductively generate 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 further includes a third circuit component disposed on a bottom plate of the base; 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 inductively generate a second electromagnetic driving force with the second magnetic element to drive the movable part to move along the first axial direction relative to the base; 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 part; The third driving element is provided to generate a third electromagnetic driving force in induction with the third magnetic element, so as to drive the movable part to move relative to the base along the second axis.

4. The optical element driving mechanism according to claim 3, wherein the driving module further includes a fourth driving assembly; the fourth driving assembly includes a fourth driving element; the fourth driving element is disposed on the third circuit assembly or the movable part; the fourth driving element is configured to generate a fourth electromagnetic driving force in induction 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 assembly and the third circuit assembly; 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 disposed in the base; the second circuit assembly is electrically connected to the third circuit assembly via the plurality of first conductive members; the first driving circuit is electrically connected to the second driving circuit via the plurality of first conductive members and the third circuit assembly; 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 seat; the third circuit assembly is electrically connected to the plurality of elastic elements via the plurality of second conductive members; the optical element driving mechanism further includes a plurality of third conductive members partially disposed in the base seat; the plurality of second conductive members, the plurality of elastic elements and the plurality of third conductive members form a plurality of external connection lines; the first driving circuit and the second driving circuit share the 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 the 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 driving circuit is configured to sense the movement of the movable assembly relative to the base seat; 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 assembly; the first sensor is configured to sense the movement of the movable part relative to the base along the first axis; the second sensor is configured to sense the movement of the movable part relative to the base along the second axis; the third sensor is configured to sense the rotation of the movable part 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 member disposed between the base and the movable assembly; the first guiding member is configured to guide the movable assembly to move along the main shaft; the optical element driving mechanism further includes a first attracting element disposed on the base; the first attracting element is made of a magnetic attracting material; the first guiding member is made of a metal material; a first magnetic attraction force is generated between the first attracting element and the first guiding member to drive the base to abut against the first guiding member; the first guiding member has a long strip structure; the length of the first guiding member 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 includes at least one second attracting element disposed on the base corresponding to the second magnetic element; when viewed along the main shaft, the second attracting element has a long strip structure; the extending direction of the second attracting element is different from the extending direction of the second magnetic element; the extending direction of the second attracting element is perpendicular to the extending direction of the second magnetic element; when viewed along the main shaft, the length of the second attracting 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 shaft, the length of the second attracting 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 includes at least one third attracting element disposed on the base corresponding to the third magnetic element; when viewed along the main shaft, the third attracting element has a long strip structure; the extending direction of the third attracting element is different from the extending direction of the third magnetic element; the extending direction of the third attracting element is perpendicular to the extending direction of the third magnetic element; when viewed along the main shaft, the length of the third attracting 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 shaft, the length of the third attracting 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 includes a plurality of second guiding members disposed between the base and the movable part; the movable part moves relative to the base through the plurality of second guiding members; the movable part has a plurality of receiving grooves configured to respectively receive the plurality of second guiding members; when viewed along the main shaft, each of the plurality of receiving grooves has a circular structure; each of the plurality of second guiding members has a spherical structure; when viewed along the main shaft, the size of the receiving groove is greater than the size of the corresponding second guiding member; the materials of the plurality of second guiding members are different from the material of the movable part; The Young's modulus of the plurality of the second guiding members is different from that of the movable portion; The Young's modulus of the plurality of the second guiding members is more than ten times that of the movable portion; The movable portion is made of a plastic material; The plurality of the second guiding members are made of a ceramic material.

10. The optical element driving mechanism according to claim 1, wherein the optical element driving mechanism further comprises a first optical module 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 along an optical axis of the first optical element relative to the housing; the optical element driving mechanism further comprises 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 part of the first optical module; the second optical module has an aperture structure; the connecting member is disposed on the housing by an insert injection molding technique; the housing is made of a metal material; the connecting member is made of a plastic material.

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