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 more 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 a camera module disposed on the electronic device, a user 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 in size 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 foregoing 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 purpose of the present disclosure is to propose 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, which is connected between the body portion and the housing. The cantilever extends from the body portion, and the cantilever and the body are integrally formed. The driving module is configured to drive the movable component, the body portion, and the optical element to move along the main axis. The optical element driving mechanism further includes a first guiding member, which is disposed between the base and the movable component. The first guiding member has a columnar structure and extends along the main axis. 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 second circuit component, which is fixedly disposed on the movable component. The driving module includes a first driving component, which is 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 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. 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 disposed on the base.

[0008] According to some embodiments of the present disclosure, the movable component includes a base and a movable portion. The second circuit component is disposed on a side wall of the base. The optical element driving mechanism further includes a plurality of second guiding members, which are disposed between the base and the movable portion. The movable portion moves relative to the base through these second guiding members. The optical element driving mechanism further includes a third circuit component, which is disposed on a bottom plate of the base. The driving module further includes a second driving component. 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 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 along a first axial direction relative to the base. The first axial direction is perpendicular to the main axis. The driving module further includes a third driving component. 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 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 along a second axial direction relative to the base. The second axial direction is perpendicular to the first axial direction and the main 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 disposed on the third circuit component and corresponding to the second driving element. 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 relative to the base around the main shaft.

[0010] According to some embodiments of the present disclosure, the movable component further includes a bottom cover fixedly connected to the base. The bottom cover is configured to surround at least a part of the movable part. The bottom cover is configured to protect and limit the movement range of the movable part in the first axial direction or the second axial direction. The bottom cover is made of a metal material. A first buffer member is disposed on the bottom cover and configured to abut against the base when the movable component is at a first limit position. The first buffer member is made of a plastic material. The first buffer member is formed on the bottom cover by an insert injection molding technique.

[0011] According to some embodiments of the present disclosure, the bottom cover has a side opening configured to accommodate a part of the cantilever. The cantilever extends out from the body part through the side opening. When viewed along the first axial direction, the bottom cover overlaps a part of the body part. When viewed along the first axial direction, the bottom cover does not overlap the cantilever. When viewed along the second axial direction, the bottom cover overlaps a part of the body part and the cantilever.

[0012] According to some embodiments of the present disclosure, the cantilever has a first extension part, a second extension part, and a third extension part. The first extension part is connected to the body part. The second extension part is connected between the first extension part and the third extension part. The optical element driving mechanism further includes a second buffer member fixedly disposed on the second extension part. The second buffer member is configured to protect the second extension part. The second buffer member is made of a non-metallic material. The base has a side stop part configured to stop a part of the second extension part. The second extension part is located between the side stop part and the housing. When viewed along the first axial direction, the side stop part overlaps a part of the second extension part. When viewed along the first axial direction, the side stop part does not overlap the second buffer member.

[0013] According to some embodiments of the present disclosure, the third extension part has a first section and a second section. The first section is connected to the second section. The first section is connected between the second section and the second extension part. The thickness of the first section in the second axial direction is different from the thickness of the second section in the second axial direction. The thickness of the first section in the second axial direction is less than the thickness of the second section in the second axial direction. The second section is fixedly connected to the housing, and the first section is not connected to the housing. A gap is formed between the first section and the housing.

[0014] According to some embodiments of the present disclosure, the optical element driving mechanism further includes a stop element connected to the cantilever. The stop element is fixedly connected to a part of the cantilever. The stop element has a first stop portion and a second stop portion. The first extension portion is fixedly connected to the first stop portion through an adhesive element. The second extension portion is separably corresponding to the second stop portion. No adhesive element is provided between the second extension portion and the second stop portion. The second stop portion is configured to stop and limit the second extension portion. When viewed along the second axis, the included angle between the first stop portion and the second stop portion is between 85 and 95 degrees.

[0015] According to some embodiments of the present disclosure, 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 the Young's modulus of the movable part. These second guiding members are made of ceramic materials.

[0016] The present disclosure provides an optical element driving mechanism, including a fixed assembly, a movable assembly, and a driving module. The movable assembly is configured to be connected to an optical element, and the driving module is configured to drive the movable assembly to move relative to the fixed assembly. Wherein, the driving module may include a first driving component configured to drive the movable assembly to move along the optical axis relative to the fixed assembly 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 assembly and configured to guide the movable assembly to move along the main axis relative to the base. The optical element driving mechanism may further include two first attracting elements disposed in the base of the movable assembly. 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 assembly 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 assembly may have the aforementioned base and a movable part, and the movable part 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 part 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, which includes 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, which is 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. 10 is a perspective view of an optical element driving mechanism according to an embodiment of the present disclosure.

[0022] Figure 2 FIG. 14 is an exploded view of an optical element driving mechanism according to an embodiment of the present disclosure.

[0023] Figure 3 FIG. 18 is a cross-sectional view of the optical element driving mechanism according to an embodiment of the present disclosure along Figure 1 section line A-A in FIG.

[0024] Figure 4 FIG. 24 is an exploded view of the movable component according to an embodiment of the present disclosure.

[0025] Figure 5 FIG. 28 is a perspective view of a partial structure of the optical element driving mechanism according to an embodiment of the present disclosure.

[0026] Figure 6 FIG. 32 is a cross-sectional view of the optical element driving mechanism according to an embodiment of the present disclosure along Figure 1 section line B-B in FIG.

[0027] Figure 7 FIG. 38 is an exploded view of the movable component and the first circuit component according to an embodiment of the present disclosure from another perspective.

[0028] Figure 8 FIG. 42 is a perspective view of the optical element driving mechanism according to an embodiment of the present disclosure from a bottom perspective.

[0029] Figure 9 FIG. 46 is a partial enlarged view of the optical element driving mechanism according to an embodiment of the present disclosure.

[0030] Figure 10 FIG. 50 is a cross-sectional view of the optical element driving mechanism according to an embodiment of the present disclosure along Figure 1Cross-sectional view of the C-C line segment.

[0031] The reference numerals are as follows:

[0032] 100: Optical element drive mechanism

[0033] 102: Housing

[0034] 1021: Housing opening

[0035] 1023: Accommodating space

[0036] 106: Elastic element

[0037] 108: Movable part

[0038] 108C: Receiving groove

[0039] 109: Base

[0040] 1090: Bottom plate

[0041] 109W: Side wall

[0042] 111: Bottom cover

[0043] 1111: First buffer member

[0044] 111H: Central opening

[0045] 1112, 1113: Side openings

[0046] 112: Base

[0047] 1121: Base opening

[0048] 112B: Side stop portion

[0049] 114: First circuit component

[0050] 1140: Body portion

[0051] 1141: Cantilever

[0052] 1142: Cantilever

[0053] 1143: First extension

[0054] 1144: Second extension

[0055] 1145: Third extension

[0056] 1147: First section

[0057] 1148: Second section

[0058] 115: Optical element

[0059] 116: Second circuit component

[0060] 118: Third circuit component

[0061] 120: First guiding component

[0062] 130: Second guiding component

[0063] 140: Second buffering component

[0064] 150: Stopping element

[0065] 151: First stopping portion

[0066] 152: Second stopping portion

[0067] 200: First optical module

[0068] AE: Adhering element

[0069] AF1: First magnetic attraction force

[0070] AF2: Second magnetic attraction force

[0071] AF3: Third magnetic attraction force

[0072] AH1: First attracting element

[0073] AH2: Second attracting element

[0074] AH3: Third attracting element

[0075] AX1: First axial direction

[0076] AX2: Second axial direction

[0077] CL1: First driving element

[0078] CL2: Second driving element

[0079] CL3: Third driving element

[0080] CL4: Fourth driving element

[0081] DA1: First driving assembly

[0082] DA2: Second driving assembly

[0083] DA3: Third driving assembly

[0084] DA4: Fourth driving assembly

[0085] DM: Driving assembly

[0086] F1: First electromagnetic driving force

[0087] F2: Second electromagnetic driving force

[0088] F3: Third electromagnetic driving force

[0089] F4: Fourth electromagnetic driving force

[0090] FA: Fixed component

[0091] GP: Gap

[0092] MA: Movable component

[0093] MG1: First magnetic element

[0094] MG2: Second magnetic element

[0095] MG3: Third magnetic element

[0096] MX: Main shaft

[0097] O: Optical axis

[0098] OE: Optical element

[0099] TH1: Thickness

[0100] TH2: Thickness

[0101] X: X-axis

[0102] Y: Y-axis

[0103] Z: Z-axis Detailed implementation manners

[0104] 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 the first characteristic component is formed on the second characteristic component, it may include an embodiment where the first characteristic component and the second characteristic component are in direct contact, and there may also be an embodiment where 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.

[0105] In addition, repeated reference numerals or labels may be used in different embodiments. These repetitions are 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 being discussed. Further, forming, connecting to, and / or coupling to 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 between the above-mentioned feature components such that the above-mentioned feature components may not be in direct contact. Further, spatial relative terms may be used herein, such as "vertical", "above", "upper", "lower", "bottom", and similar terms (such as "downwardly", "upwardly", etc.). These spatial relative 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 spatial relative terms are intended to cover different orientations of the device including the features.

[0106] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It is understood that such terms, such as those defined in a commonly used dictionary, should be interpreted to have a meaning consistent with the context of the relevant art and the present disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.

[0107] Furthermore, ordinal terms such as "first", "second", etc. used in the specification and claims to modify elements of the claims do not themselves imply and represent any prior ordinal for the claimed element, 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 ordinal terms is only to clearly distinguish one claimed element with a certain name from another claimed element with the same name.

[0108] In addition, in some embodiments of the present disclosure, terms regarding joining and connecting, such as "connect", "interconnect", etc., unless specifically defined, may refer to two structures in direct contact, or may also refer to two structures not in direct contact, with other structures disposed therebetween. And such terms regarding joining and connecting may also include cases where both structures are movable, or both structures are fixed.

[0109] Please refer to Figures 1 to 3 , Figure 1 a perspective 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 an optical element driving mechanism 100 according to an embodiment of the present disclosure along Figure 1Cross-sectional view of line A-A. The optical element driving mechanism 100 can 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 provided in a smart phone for a user to perform the function of image extraction. In this embodiment, the optical element driving mechanism 100 can 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 can also have autofocus (AF) and optical image stabilization (OIS) functions.

[0110] In this embodiment, the optical element driving mechanism 100 can 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.

[0111] 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 can further include a first optical module 200 disposed on the housing 102. Another optical element OE can be disposed in the first optical module 200, and the optical element OE is, for example, a lens, but is not limited thereto.

[0112] As Figure 2 shown, the optical element driving mechanism 100 can 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 circuit board, and the optical element 115 is, for example, a photosensitive element, but is not limited thereto.

[0113] 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.

[0114] Furthermore, when the housing 102 is disposed on the base 112, an accommodating space 1023 can be formed for accommodating the movable component MA, the driving module DM, and a part of the first circuit component 114.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] Furthermore, the driving module DM may include a first driving component DA1, which is 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.

[0121] 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 interact with the first magnetic element MG1 to generate a first electromagnetic driving force F1 to drive the movable assembly MA to move back and forth along the main shaft MX.

[0122] In addition, as Figure 2 shown in Figure 3 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 accommodation space 1023 through the elastic elements 106.

[0123] Next, please refer to Figures 2 to 4 FIG. Figure 4 which is an exploded view of the 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 part 108, and as Figure 4 shown in

[0124] FIG., the second circuit assembly 116 is fixedly disposed on a side wall 109W of the base 109.

[0125] Furthermore, the optical element driving mechanism 100 may further include a third circuit assembly 118 fixedly disposed on a bottom plate 1090 of the base 109. Similarly, the third circuit assembly 118 is, for example, a flexible printed circuit board, but is not limited thereto. Figure 4 As

[0126] shown in

[0127] 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.

[0128] Similarly, the driving module DM may further include a third driving component DA3, and the third driving component 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.

[0129] Wherein, 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 is not limited thereto. In other embodiments, the positions of the third magnetic element MG3 and the third driving element CL3 may be interchanged.

[0130] 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 axis AX2, and the second axis AX2 is perpendicular to the first axis AX1 and the main axis MX.

[0131] In addition, in this embodiment, the driving module DM may further include a fourth driving component DA4. The fourth driving component DA4 includes a fourth driving element CL4, which is disposed on the third circuit component 118 and corresponds 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.

[0132] 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).

[0133] 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 4 shown, in this embodiment, the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 are the same in magnitude but opposite in direction.

[0134] 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 axis MX.

[0135] On the other hand, when the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 are the same in both magnitude and direction, 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 axis AX1.

[0136] Next, please refer to Figures 4 to 6 .Figure 5 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 is a cross-sectional view of the optical element driving mechanism 100 along the Figure 1 section line B-B in

[0137] As Figure 4 and Figure 6 shown, the optical element driving mechanism 100 may further include a plurality of second guiding members 130 disposed between the base 109 and the movable portion 108, and the movable portion 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.

[0138] Each of these 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 respectively receive these second guiding members 130.

[0139] As Figure 4 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.

[0140] In this embodiment, the material of these second guiding members 130 may be different from the material of the movable portion 108. Therefore, the Young's modulus of these second guiding members 130 may be different from the Young's modulus of the movable portion 108.

[0141] Specifically, the Young's modulus of these second guiding members 130 is more than ten times that of the movable portion 108. In this embodiment, the movable portion 108 may be made of a plastic material, and these second guiding members 130 may be made of a ceramic material, but is not limited thereto.

[0142] 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 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.

[0143] As Figure 5 shown, a first magnetic attraction force AF1 may be generated between the first attracting element AH1 and the corresponding first guiding member 120 to drive the base 109 to abut against the first guiding member 120. Based on such a configuration, the movable assembly MA can move more stably along the main axis MX.

[0144] Furthermore, as Figure 4 shown in Figure 5 , the optical element driving mechanism 100 may further include two second attracting elements AH2 disposed in 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.

[0145] In this embodiment, when viewed along the main axis MX, each of the two second attracting elements AH2 has an elongated structure, and the extending direction of the second attracting element AH2 is different from the extending direction of the second magnetic element MG2. Specifically, the extending direction (the first axial direction AX1) of the second attracting element AH2 is perpendicular to the extending direction (the second axial direction AX2) of the second magnetic element MG2.

[0146] Similarly, the optical element driving mechanism 100 may further include two third attracting elements AH3 disposed in 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.

[0147] 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 (the second axial direction AX2) of the third attracting element AH3 is perpendicular to the extending direction (the first axial direction AX1) of the third magnetic element MG3.

[0148] 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 in

[0149] , 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.

[0150] 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. Figure 4 , Figure 7 and Figure 8 . Figure 7 is an exploded view of the movable assembly MA and the first circuit assembly 114 according to an embodiment of the present disclosure from another perspective, and Figure 8A perspective view of the optical element driving mechanism 100 from the bottom perspective according to an embodiment of the present disclosure. As Figure 4 and Figure 7 shown, the movable component MA may further include a bottom cover 111, fixedly connected to the base 109.

[0151] The bottom cover 111 is configured to surround at least a part of the movable portion 108, and the bottom cover 111 is configured to protect and limit the movement range of the movable portion 108 in the first axial direction AX1 or the second axial direction AX2.

[0152] In this embodiment, the bottom cover 111 may be made of a metal material. Four first buffer members 1111 may be provided on the bottom cover 111, and the first buffer members 1111 are made of a plastic material. The materials of the bottom cover 111 and the first buffer members 1111 are not limited thereto.

[0153] In this embodiment, the first buffer members 1111 are formed on the bottom cover 111 by insert molding technology. The first buffer members 1111 are configured to abut against the base 112 when the movable component MA is in Figure 6 a first limit position among them, so as to ensure that the movable component MA will not be damaged due to collision.

[0154] Furthermore, as Figure 7 shown, the bottom cover 111 has a central opening 111H and side openings 1112, 1113. The side openings 1112, 1113 are communicated with the central opening 111H, and the side openings 1112, 1113 are configured to respectively accommodate a part of the cantilevers 1141, 1142. The cantilever 1141 extends out from the body portion 1140 through the side opening 1112, and the cantilever 1142 extends out from the body portion 1140 through the side opening 1113.

[0155] As Figure 8 shown, when viewed along the first axial direction AX1, the bottom cover 111 will overlap a part of the body portion 1140. When viewed along the first axial direction AX1, the bottom cover 111 does not overlap the cantilevers 1141, 1142.

[0156] Furthermore, when viewed along the second axial direction AX2, the bottom cover 111 overlaps a part of the body portion 1140 and the cantilever 1141, and the bottom cover 111 also overlaps a part of the cantilever 1142.

[0157] It should be noted that since the cantilever 1141 is symmetrical to the cantilever 1142, only the specific configuration of the cantilever 1141 will be described hereinafter. As Figure 7 shown, the cantilever 1141 may have a first extension portion 1143, a second extension portion 1144, and a third extension portion 1145.

[0158] The first extension portion 1143 is connected to the body portion 1140, and the second extension portion 1144 is connected between the first extension portion 1143 and the third extension portion 1145. Furthermore, in this embodiment, the optical element driving mechanism 100 further includes at least one second buffer member 140 fixedly disposed on the second extension portion 1144.

[0159] The second buffer member 140 is configured to protect the second extension portion 1144. The second buffer member 140 can be made of a non-metallic material, such as made of rubber material, but not limited thereto. When the movable portion 108 drives the body portion 1140 to move along the first axial direction AX1 and / or the second axial direction AX2, a part of the cantilevers 1141, 1142 will also move along with the movable portion 108.

[0160] Since the optical element driving mechanism 100 can be disposed on a circuit board (not shown in the figure) of an electronic device, a plurality of electronic components (such as resistors, capacitors, etc.) may be disposed around the optical element driving mechanism 100. Therefore, disposing the second buffer member 140 can prevent the second extension portions 1144 of the cantilevers 1141, 1142 from directly colliding with these electronic components, thereby avoiding the problem of damage.

[0161] Furthermore, as Figure 8 shown, the base 112 may have two side stop portions 112B configured to stop a part of the cantilevers 1141, 1142. For example, the two side stop portions 112B can respectively stop a part of the second extension portions 1144 of the cantilevers 1141, 1142.

[0162] Specifically, as Figure 8 shown, the second extension portion 1144 is located between the side stop portion 112B and the housing 102, and when viewed along the first axial direction AX1, the side stop portion 112B overlaps a part of the second extension portion 1144.

[0163] Since the cantilevers 1141, 1142 can be part of a flexible circuit board, they may tilt outward due to their own weight, resulting in a decrease in the accuracy of the movement of the movable portion 108. Based on the configuration of the two side stop portions 112B, this problem can be effectively avoided to ensure the accuracy of the movement of the movable portion 108.

[0164] In addition, as Figure 8 shown, in order to avoid collision with the second buffer member 140, when viewed along the first axial direction AX1, the side stop portion 112B does not overlap the second buffer member 140.

[0165] Next, please refer to Figure 9 . Figure 9Partial enlarged view of the optical element driving mechanism 100 according to an embodiment of the present disclosure. As Figure 9 shown, the third extension portion 1145 may have a first section 1147 and a second section 1148. The first section 1147 is connected to the second section 1148, and the first section 1147 is connected between the second section 1148 and the second extension portion 1144.

[0166] In this embodiment, the thickness TH1 of the first section 1147 in the second axial direction AX2 is different from the thickness TH2 of the second section 1148 in the second axial direction AX2. Specifically, the thickness TH1 of the first section 1147 in the second axial direction AX2 is less than the thickness TH2 of the second section 1148 in the second axial direction AX2.

[0167] As Figure 9 shown, the second section 1148 is fixedly connected to the housing 102, and the first section 1147 is not connected to the housing 102. Specifically, a gap GP is formed between the first section 1147 and the housing 102. Based on the configuration of the gap GP, the cantilevers 1141, 1142 can have more space to move along with the moving part 108.

[0168] Next, please refer to Figure 10 . Figure 10 Cross-sectional view of the optical element driving mechanism 100 along the Figure 1 C-C line segment in. In this embodiment, the optical element driving mechanism 100 may further include a stop element 150, which is connected to the cantilever 1141.

[0169] Specifically, the stop element 150 is fixedly connected to a part of the cantilever 1141, and the stop element 150 has a first stop portion 151 and a second stop portion 152. When observed along the second axial direction AX2 (Y-axis), the included angle between the first stop portion 151 and the second stop portion 152 is between 85 and 95 degrees.

[0170] As Figure 10 shown, the first extension portion 1143 is fixedly connected to the first stop portion 151 through an adhesive element AE. The adhesive element AE is, for example, glue, but is not limited thereto. It should be noted that the second extension portion 1144 is separably corresponding to the second stop portion 152, that is, no adhesive element AE is provided between the second extension portion 1144 and the second stop portion 152.

[0171] Based on such a design, the second stop portion 152 is configured to stop and limit the second extension portion 1144 to prevent the second extension portion 1144 from tipping outward, thereby causing inaccurate movement of the moving part 108.

[0172] The present disclosure provides an optical element driving mechanism 100, which includes a fixed assembly FA, a movable assembly MA, and a driving module DM. The movable assembly MA is configured to be connected to an optical element 115, and the driving module DM is configured to drive the movable assembly MA to move relative to the fixed assembly FA. Among them, the driving module DM may include a first driving component DA1, which is configured to drive the movable assembly MA to move along the optical axis O relative to the fixed assembly FA to achieve the purpose of autofocus.

[0173] In some embodiments, the optical element driving mechanism 100 may further include two first guiding components 120, which are arranged between the base 112 and the movable assembly MA, and are 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 attracting elements AH1, which are arranged in the base 109 of the movable assembly 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 assembly MA can move more stably along the main axis MX.

[0174] In addition, the optical element driving mechanism 100 may further include a plurality of second guiding components 130. The movable assembly MA may have the aforementioned base 109 and a movable part 108, and the movable part 108 may move relative to the base 109 through the second guiding components 130. The driving module DM may include a second driving component DA2 and a third driving component DA3, which are partially arranged 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 part 108 to move on the X-Y plane to achieve the purpose of optical image stabilization.

[0175] 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 content 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 movable relative to the fixed component; and A driving module configured to drive the movable component to move relative to the fixed component; Wherein 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 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; Wherein the movable component includes a base and a movable part; Wherein the driving module further includes a second driving component; The second driving component includes a second magnetic element and a second driving element; 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 a first axial direction; The first axial direction is perpendicular to the main axis; The driving module further includes a third driving component; The third driving component includes a third magnetic element and a third driving element; The third driving element is configured to induce a third electromagnetic driving force with the third magnetic element to drive the movable part to move relative to the base along a second axial direction; The second axial direction is perpendicular to the first axial direction and the main axis.

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 cantilever extends from the body part and is integrally formed with the body; The driving module is configured to drive the movable component, the body part, and the optical element to move along the main axis; The optical element driving mechanism further includes a first guiding member disposed between the base and the movable component; The first guiding member has a columnar structure extending along the main axis; 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 second circuit component fixedly disposed on the movable component; 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 disposed on the base.

3. The optical element driving mechanism according to claim 2, wherein The second circuit component is disposed on a side wall of the base; 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 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 one of the second magnetic element and the second driving element is disposed on the movable part; One of the third magnetic element and the third driving element is disposed on the third circuit component, and the other one of the third magnetic element and the third driving element is disposed on the movable part.

4. The optical element driving mechanism according to claim 3, wherein The driving module further includes a fourth driving component; The fourth driving component includes a fourth driving element disposed on the third circuit component and corresponding to the second driving element; 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 relative to the base around the main axis.

5. The optical element driving mechanism according to claim 4, wherein The movable assembly further includes a bottom cover fixedly connected to the base; The bottom cover is configured to surround at least a part of the movable part; The bottom cover is configured to protect and limit the movement range of the movable part in the first axial direction or the second axial direction; The bottom cover is made of a metal material; A first buffer member is disposed on the bottom cover and configured to abut against the base when the movable assembly is at a first limit position; The first buffer member is made of a plastic material; The first buffer member is formed on the bottom cover by an insert injection molding technique.

6. The optical element driving mechanism according to claim 5, wherein The bottom cover has a side opening configured to accommodate a part of the cantilever; The cantilever extends out from the body part through the side opening; When viewed along the first axial direction, the bottom cover overlaps a part of the body part; When viewed along the first axial direction, the bottom cover does not overlap the cantilever; When viewed along the second axial direction, the bottom cover overlaps a part of the body part and the cantilever.

7. The optical element driving mechanism according to claim 6, wherein The cantilever has a first extension part, a second extension part and a third extension part; The first extension part is connected to the body part; The second extension part is connected between the first extension part and the third extension part; The optical element driving mechanism further includes a second buffer member fixedly disposed on the second extension part; The second buffer member is configured to protect the second extension part; The second buffer member is made of a non-metallic material; The base has a side stop part configured to stop a part of the second extension part; The second extension part is located between the side stop part and the housing; When viewed along the first axial direction, the side stop part overlaps a part of the second extension part; When viewed along the first axial direction, the side stop part does not overlap the second buffer member.

8. The optical element driving mechanism according to claim 7, wherein The third extension part has a first section and a second section; The first section is connected to the second section; The first section is connected between the second section and the second extension; The thickness of the first section in the second axial direction is different from the thickness of the second section in the second axial direction; The thickness of the first section in the second axial direction is less than the thickness of the second section in the second axial direction; The second section is fixedly connected to the housing, and the first section is not connected to the housing; A gap is formed between the first section and the housing.

9. The optical element driving mechanism according to claim 7, wherein The optical element driving mechanism further includes a stop element connected to the cantilever; The stop element is fixedly connected to a part of the cantilever; The stop element has a first stop portion and a second stop portion; The first extension is fixedly connected to the first stop portion through an adhesive element; The second extension is separably corresponding to the second stop portion; No adhesive element is provided between the second extension and the second stop portion; The second stop portion is configured to stop and limit the second extension; When viewed along the second axial direction, the included angle between the first stop portion and the second stop portion is between 85 and 95 degrees.

10. The optical element driving mechanism according to claim 3, wherein The movable part has a plurality of receiving grooves configured to respectively receive a plurality of the second guiding members; When viewed along the main axis, 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 axis, the size of the receiving groove is larger 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 second guiding members is different from the Young's modulus of the movable part; The Young's modulus of the plurality of second guiding members is more than ten times the Young's modulus of the movable part; The plurality of second guiding members are made of ceramic materials.

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