Optical element driving mechanism

Abstract

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

Description

Technical Field

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

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

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

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

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

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

[0007] According to some embodiments of the present disclosure, the fixed component includes a housing and a base. The housing and the base are arranged along a main axis. The optical element driving mechanism also includes a first circuit component. The first circuit component has a main body, and the optical element is arranged on the main body. The main body is connected to the movable component. The first circuit component also has a cantilever connected between the main body and the housing. The cantilever extends from the main body, and the cantilever and the main body are integrally formed. The driving module is configured to drive the movable component, the main body and the optical element to move along the main axis. The optical element driving mechanism also includes a first guide component, which is arranged between the base and the movable component. The first guide component has a columnar structure and extends along the main axis. The first guide component is configured to guide the movable component to move along the main axis. The optical element driving mechanism also includes a second circuit component, which is fixedly arranged 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 part. The second circuit component is disposed on a side wall of the base. The optical element driving mechanism also includes a plurality of second guide components disposed between the base and the movable part. The movable part moves relative to the base through these second guide components. The optical element driving mechanism also includes a third circuit component disposed on a bottom plate of the base. The driving module also 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 part. The second driving element is configured to induce a second electromagnetic driving force with the second magnetic element to drive the movable part to move relative to the base along a first axial direction. The first axial direction is perpendicular to the main axis. The driving module also 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 part. 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.

[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, which is disposed in the third circuit component and corresponds 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 axis.

[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 portion of the movable portion. The bottom cover is configured to protect and limit the range of motion of the movable portion in the first axial direction or the second axial direction. The bottom cover is made of metal. A first buffer component is provided on the bottom cover, configured to abut the base when the movable component is located in a first extreme position. The first buffer component is made of plastic material. The first buffer component is formed on the bottom cover by embedded injection molding technology.

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

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

[0013] According to some embodiments of the present disclosure, the third extension portion 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 portion. 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 also includes a stop element connected to the cantilever. The stop element is fixedly connected to a portion 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 a connecting element. The second extension portion detachably corresponds to the second stop portion. No connecting 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 axial direction, the 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 guide components. When viewed along the main axis, each of these receiving grooves has a circular structure. Each of these second guide components 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 guide component. The material of these second guide components is different from the material of the movable part. The Young's modulus of these second guide components is different from the Young's modulus of the movable part. The Young's modulus of these second guide components is more than ten times that of the Young's modulus of the movable part. These second guide components are made of ceramic material.

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

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

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

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

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

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

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

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

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

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

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

[0027] Figure 7 FIG. 4 is an exploded view of a movable component and a first circuit component at another viewing angle according to an embodiment of the present disclosure.

[0028] Figure 8 FIG. 4 is a three-dimensional diagram of an optical element driving mechanism according to an embodiment of the present disclosure from a bottom perspective.

[0029] Fig. 9 It is a partially enlarged view of an optical element driving mechanism according to an embodiment of the present disclosure.

[0030] Fig.10 The optical element driving mechanism according to one embodiment of the present disclosure is Figure 1Section view of the CC segment.

[0031] The reference numerals are as follows:

[0032] 100: Optical element driving mechanism

[0033] 102: Shell

[0034] 1021: Shell opening

[0035] 1023: Accommodation space

[0036] 106: Elastic element

[0037] 108: Activities Department

[0038] 108C: Receiving slot

[0039] 109: Base

[0040] 1090: Base plate

[0041] 109W: Sidewall

[0042] 111: Bottom cover

[0043] 1111: first buffer component

[0044] 111H: Center opening

[0045] 1112, 1113: side opening

[0046] 112: Base

[0047] 1121: Base opening

[0048] 112B: Side stopper

[0049] 114: First circuit component

[0050] 1140: Ontology Department

[0051] 1141:Cantilever

[0052] 1142:Cantilever

[0053] 1143: first extension

[0054] 1144: Second extension

[0055] 1145: Third extension

[0056] 1147: First Segment

[0057] 1148: Second Segment

[0058] 115: Optical components

[0059] 116: Second circuit component

[0060] 118: Third circuit component

[0061] 120: first guide member

[0062] 130: Second guide component

[0063] 140: Second buffer component

[0064] 150: Stop element

[0065] 151: first stopper

[0066] 152: Second stopper

[0067] 200: First optical module

[0068] AE: Adhesion components

[0069] AF1: First Magnetic Force

[0070] AF2: Second magnetic attraction

[0071] AF3: The third magnetic attraction

[0072] AH1: First attracting element

[0073] AH2: Second attractor

[0074] AH3: The third attraction element

[0075] AX1: First axis

[0076] AX2: Second axis

[0077] CL1: First drive element

[0078] CL2: Second drive element

[0079] CL3: Third drive element

[0080] CL4: Fourth drive element

[0081] DA1: First drive assembly

[0082] DA2: Second drive assembly

[0083] DA3: Third drive assembly

[0084] DA4: Fourth drive assembly

[0085] DM: Drive Components

[0086] F1: The first electromagnetic driving force

[0087] F2: Second electromagnetic driving force

[0088] F3: The third electromagnetic driving force

[0089] F4: The fourth electromagnetic driving force

[0090] FA:Fixed components

[0091] GP: Gap

[0092] MA:Active Components

[0093] MG1: First magnetic element

[0094] MG2: Second magnetic element

[0095] MG3: The third magnetic element

[0096] MX:Spindle

[0097] O: Optical axis

[0098] OE:Optical Components

[0099] TH1:Thickness

[0100] TH2:Thickness

[0101] X: X-axis

[0102] Y: Y axis

[0103] Z: Z axis DETAILED DESCRIPTION

[0104] Many different implementation methods or examples are disclosed below to implement the different features of the subject matter provided. The following describes specific embodiments of the components and their arrangements to illustrate the present disclosure. Of course, these embodiments are only for illustration and should not be used to limit the scope of the present disclosure. For example, it is mentioned in the specification that the first characteristic component is formed on the second characteristic component, which may include an embodiment in which the first characteristic component and the second characteristic component are in direct contact, and may also include an embodiment in which there are other features between the first characteristic component and the second characteristic component. In other words, the first characteristic component and the second characteristic component are not in direct contact.

[0105] In addition, repeated numbers or marks may be used in different embodiments, and these repetitions are only for the purpose of simply and clearly describing the present disclosure, and do not represent a specific relationship between the different embodiments and / or structures discussed. In addition, in the present disclosure, forming, connecting to and / or coupling to another feature component on another feature component may include an embodiment in which the feature component is formed to be in direct contact, and may also include an embodiment in which an additional feature component inserted into the above-mentioned feature component can be formed, so that the above-mentioned feature component may not be in direct contact. In addition, space-related words may be used, such as "vertical", "above", "up", "below", "bottom" and similar words (such as "downwardly", "upwardly", etc.), these space-related words are for the convenience of describing the relationship between one (some) element or feature and another (some) element or feature in the diagram, and these space-related words are intended to cover different directions of the device including the feature.

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

[0107] Furthermore, the ordinal numbers used in the specification and claims, such as "first", "second", etc., to modify the elements of the claims, do not themselves imply or represent any previous ordinal number of the requested element, nor do they represent the order of one requested element and another requested element, or the order in the manufacturing method. The use of multiple ordinals is only used to clearly distinguish a requested element with a certain name from another requested element with the same name.

[0108] In addition, in some embodiments of the present disclosure, terms such as "connection" and "interconnection" may refer to two structures being in direct contact with each other, or two structures not being in direct contact with each other, and other structures being disposed between the two structures, unless otherwise specified. Such terms may also include situations where both structures are movable or both structures are fixed.

[0109] Please refer to Figures 1 to 3 , Figure 1 FIG. 1 is a three-dimensional schematic diagram of an optical element driving mechanism 100 according to an embodiment of the present disclosure. Figure 2 is an exploded view of an optical element driving mechanism 100 according to an embodiment of the present disclosure, and Figure 3 The optical element driving mechanism 100 according to an embodiment of the present disclosure is Figure 1Cross-sectional view of the AA line segment in the figure. The optical element driving mechanism 100 may be an optical camera module configured to carry and drive at least one optical element. The optical element driving mechanism 100 may be installed in various electronic devices or portable electronic devices, such as a smart phone, so that the user can perform image extraction functions. In this embodiment, the optical element driving mechanism 100 may be a voice coil motor (VCM) with an autofocus (AF) function, but the present disclosure is not limited to this. In other embodiments, the optical element driving mechanism 100 may also have autofocus (AF) and optical image stabilization (OIS) functions.

[0110] 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.

[0111] In this embodiment, if Figure 2 As shown, the fixing assembly FA includes a housing 102 and a base 112, and the housing 102 and the base 112 are arranged along a main axis MX. Furthermore, the optical element driving mechanism 100 may also include a first optical module 200, which is disposed on the housing 102. Another optical element OE may be disposed in the first optical module 200, and the optical element OE is, for example, a lens, but is not limited thereto.

[0112] like Figure 2 As shown, the optical element driving mechanism 100 may further include a first circuit component 114, and the optical element 115 is disposed on the first circuit component 114. In this embodiment, a portion of the first circuit component 114 is fixed to the housing 102, and another portion of the first circuit component 114 is connected to the movable element MA. The first circuit component 114 is, for example, a flexible circuit board, and the optical element 115 is, for example, a photosensitive element, but is not limited thereto.

[0113] like Figure 2 As shown, the housing 102 has a hollow structure and has a housing opening 1021 formed thereon, and a base opening 1121 is formed on the base 112. The center of the housing opening 1021 corresponds to the optical axis O of the optical element OE, and the base opening 1121 corresponds to the optical element 115 disposed below the base 112. External light can enter the housing 102 through the housing opening 1021 and be received by the optical element 115 after passing through the optical element OE and the base opening 1121 to generate a digital image signal.

[0114] Furthermore, when the housing 102 is disposed on the base 112 , a receiving space 1023 can be formed to receive the active component MA, the driving module DM and a portion of the first circuit component 114 .

[0115] like Figure 2 As shown, the first circuit component 114 has a main body 1140 having a plate-like structure, the optical element 115 is disposed on the main body 1140, and the main body 1140 is fixedly connected to the movable component MA.

[0116] The first circuit assembly 114 further has a cantilever 1141 and a cantilever 1142 connected between the main body 1140 and the housing 102. Specifically, the cantilever 1141, 1142 extends from the main body 1140, and a portion of the cantilever 1141, 1142 is fixed to the housing 102. In this embodiment, the main body 1140 and the cantilever 1141, 1142 are integrally formed.

[0117] In this embodiment, the driving module DM is configured to drive the movable assembly MA, the main body 1140 and the optical element 115 to move along the main axis MX. Figure 2 and Figure 3 As shown, the optical element driving mechanism 100 may further include two first guiding components 120 disposed between the base 112 and the movable assembly MA.

[0118] The first guiding member 120 may have a columnar structure or a strip-shaped structure, extending along the main axis MX, and the first guiding member 120 is configured to guide the movable assembly MA to move along the main axis MX relative to the base 112 .

[0119] In this embodiment, if Figure 2 and Figure 3 As shown, the optical element driving mechanism 100 may further include a second circuit component 116 fixedly disposed on the movable component MA. The second circuit component 116 is, for example, a flexible circuit board, but is not limited thereto.

[0120] 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.

[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 induce the first magnetic element MG1 to generate a first electromagnetic driving force F1 to drive the movable element MA to move back and forth along the main axis MX.

[0122] In addition, if Figure 2 and Figure 3 As shown, the optical element driving mechanism 100 further includes a plurality of elastic elements 106 movably connected between the movable assembly MA and the base 112 . Therefore, the movable assembly MA can be suspended in the accommodating space 1023 through the elastic elements 106 .

[0123] Please refer to Figures 2 to 4 , Figure 4 FIG. 1 is an exploded view of a movable assembly MA according to an embodiment of the present disclosure. In this embodiment, the movable assembly MA may include a base 109 and a movable portion 108, and Figure 4 As shown, the second circuit assembly 116 is fixedly disposed on a side wall 109W of the base 109 .

[0124] Furthermore, the optical element driving mechanism 100 may further include a third circuit component 118 fixedly disposed on a bottom plate 1090 of the base 109. Similarly, the third circuit component 118 is, for example, a flexible circuit board, but is not limited thereto.

[0125] like Figure 4 As shown, the driving module DM may further include a second driving component DA2, and the second driving component DA2 may include a second magnetic element MG2 and a second driving element CL2. The second magnetic element MG2 is, for example, a magnet, and the second driving element CL2 is, for example, a winding coil, but is not limited thereto.

[0126] The second magnetic element MG2 is fixedly disposed on the movable portion 108, and the second driving element CL2 is disposed on the third circuit element 118, but the present invention is not limited thereto. In other embodiments, the positions of the second magnetic element MG2 and the second driving element CL2 can be interchanged.

[0127] The second driving element CL2 is configured to induce the second magnetic element MG2 to generate a second electromagnetic driving force F2 to drive the movable portion 108 to move relative to the base 109 along a first axial direction AX1, and the first axial direction AX1 is perpendicular to the main axis MX.

[0128] Similarly, the driving module DM may further include a third driving element DA3, and the third driving element 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] The third magnetic element MG3 is fixedly disposed on the movable portion 108, and the third driving element CL3 is disposed on the third circuit element 118, but the present invention is not limited thereto. In other embodiments, the positions of the third magnetic element MG3 and the third driving element CL3 can be interchanged.

[0130] The third driving element CL3 is configured to induce the third magnetic element MG3 to generate a third electromagnetic driving force F3 to drive the movable portion 108 to move relative to the base 109 along a second axis AX2 , and the second axis AX2 is perpendicular to the first axis AX1 and the main axis MX.

[0131] In addition, in this embodiment, the driving module DM may further include a fourth driving component DA4, wherein 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. Figure 4 As shown, the fourth driving element CL4 and the second driving element CL2 are disposed on the same side of the third circuit element 118 .

[0132] Similarly, the fourth driving element CL4 is configured to induce the second magnetic element MG2 to generate a fourth electromagnetic driving force F4. That is, the fourth driving element CL4 and the second driving element CL2 share the same magnetic element (magnet).

[0133] In this embodiment, the currents provided to the fourth driving element CL4 and the second driving element CL2 may be the same or opposite. Figure 4 As shown, in this embodiment, the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 have the same magnitude but opposite directions.

[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 portion 108 to rotate relative to the base 109 around the main axis MX.

[0135] On the other hand, when the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 have the same magnitude and direction, the fourth electromagnetic driving force F4 and the second electromagnetic driving force F2 can jointly drive the movable portion 108 to move along the first axial direction AX1.

[0136] Please refer to Figures 4 to 6 . Figure 5 is a perspective view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present disclosure, and Figure 6 The optical element driving mechanism 100 according to an embodiment of the present disclosure is Figure 1 Section view of line segment BB.

[0137] like Figure 4 and Figure 6 As shown, the optical element driving mechanism 100 may further include a plurality of second guide members 130 disposed between the base 109 and the movable portion 108, and the movable portion 108 moves relative to the base 109 through the second guide members 130. In this embodiment, the optical element driving mechanism 100 may include four second guide members 130, but is not limited thereto.

[0138] Each of the second guiding members 130 may have a spherical structure, such as a ball, and the movable portion 108 may have four receiving grooves 108C configured to receive the second guiding members 130 respectively.

[0139] like Figure 4 As shown, each of these receiving grooves 108C has a circular structure when viewed along the main axis MX, and the size of the receiving groove 108C is larger than the size of the corresponding second guide member 130 when viewed along the main axis MX.

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

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

[0142] Please continue to refer to Figure 4 and Figure 5 In this embodiment, the optical element driving mechanism 100 may further include two first attracting elements AH1 disposed in the base 109. The first attracting element AH1 may be made of a magnetic material, such as a magnet, and the corresponding first guiding member 120 may be made of a metal material.

[0143] like Figure 5 As shown, a first magnetic attraction force AF1 can be generated between the first attraction element AH1 and the corresponding first guide member 120 to drive the base 109 to lean against the first guide member 120. Based on such a configuration, the movable assembly MA can be more stable when moving along the main axis MX.

[0144] Furthermore, if Figure 4 and Figure 5 As shown, 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 a long strip structure, and the extension direction of the second attracting element AH2 is different from the extension direction of the second magnetic element MG2. Specifically, the extension direction (first axial direction AX1) of the second attracting element AH2 is perpendicular to the extension direction (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 attraction elements AH3 has a long strip structure, and the extension direction of the third attraction element AH3 is different from the extension direction of the third magnetic element MG3. Specifically, the extension direction (second axial direction AX2) of the third attraction element AH3 is perpendicular to the extension direction (first axial direction AX1) of the third magnetic element MG3.

[0148] In this embodiment, the second attraction element AH2 and the third attraction element AH3 may be magnetic conductive sheets, but are not limited thereto. Figure 5 As shown, each of the two second attracting elements AH2 can generate a second magnetic attraction force AF2 with the second magnetic element MG2, and each of the two third attracting elements AH3 is configured with the third magnetic element MG3 to generate a third magnetic attraction force AF3.

[0149] Based on such a configuration, the movable portion 108 can be suspended at the bottom of the base 109 , and the second guide member 130 can be clamped between the movable portion 108 and the base 109 , thereby making the movement of the movable portion 108 relative to the base 109 more stable.

[0150] Please refer to Figure 4 , Figure 7 and Figure 8 . Figure 7 is an exploded view of the active component MA and the first circuit component 114 at another perspective according to an embodiment of the present disclosure, and Figure 8FIG. 1 is a perspective view of an optical element driving mechanism 100 from a bottom perspective according to an embodiment of the present disclosure. Figure 4 and Figure 7 As shown, the movable assembly 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 portion 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 metal material, four first buffer components 1111 may be disposed on the bottom cover 111, and the first buffer components 1111 are made of plastic material. The materials of the bottom cover 111 and the first buffer components 1111 are not limited thereto.

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

[0154] Furthermore, if Figure 7 As shown, the bottom cover 111 has a central opening 111H and side openings 1112, 1113, the side openings 1112, 1113 are connected to the central opening 111H, and the side openings 1112, 1113 are configured to respectively accommodate a portion of the cantilever 1141, 1142. The cantilever 1141 extends from the main body 1140 through the side opening 1112, and the cantilever 1142 extends from the main body 1140 through the side opening 1113.

[0155] like Figure 8 As shown, when viewed along the first axial direction AX1, the bottom cover 111 overlaps a portion 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 the body portion 1140 and a portion of the cantilever 1141 , and the bottom cover 111 also overlaps a portion 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 below. Figure 7 As 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 main 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-metal material, such as a rubber material, but is not limited thereto. When the movable portion 108 drives the main body 1140 to move along the first axial direction AX1 and / or the second axial direction AX2, a portion of the cantilevers 1141 and 1142 will also move with the movable portion 108.

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

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

[0162] Specifically, if Figure 8 As 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 portion of the second extension portion 1144 .

[0163] Since the cantilevers 1141 and 1142 may be part of a flexible circuit board, they may tilt outward due to their own weight, resulting in reduced precision of the movement of the movable portion 108. The configuration of the two side stoppers 112B can effectively avoid this problem and ensure the precision of the movement of the movable portion 108.

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

[0165] Please refer to Fig. 9 . Fig. 9FIG. 1 is a partially enlarged view of an optical element driving mechanism 100 according to an embodiment of the present disclosure. Fig. 9 As 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 segment 1147 in the second axial direction AX2 is different from the thickness TH2 of the second segment 1148 in the second axial direction AX2. Specifically, the thickness TH1 of the first segment 1147 in the second axial direction AX2 is smaller than the thickness TH2 of the second segment 1148 in the second axial direction AX2.

[0167] like Fig. 9 As 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 and 1142 can have more space to move with the movable part 108.

[0168] Please refer to Fig.10 . Fig.10 The optical element driving mechanism 100 according to an embodiment of the present disclosure is Figure 1 In this embodiment, the optical element driving mechanism 100 may further include a stopper element 150 connected to the cantilever 1141 .

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

[0170] like Fig.10 As 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 is worth noting that the second extension portion 1144 is detachably corresponding to the second stop portion 152, that is, no adhesive element AE is disposed between the second extension portion 1144 and the second stop portion 152.

[0171] Based on such a design, the second stopper 152 is configured to stop and limit the second extension portion 1144 to prevent the second extension portion 1144 from tipping outwards, thereby causing the movable portion 108 to move inaccurately.

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

[0173] In some embodiments, the optical element driving mechanism 100 may further include two first guide members 120 disposed between the base 112 and the movable assembly MA, and configured to guide the movable assembly MA to move along the main axis MX relative to the base 112. The optical element driving mechanism 100 may further include two first attraction elements AH1 disposed in the base 109 of the movable assembly MA. A first magnetic attraction force AF1 may be generated between the first attraction element AH1 and the corresponding first guide member 120 to drive the base 109 to bear against the first guide member 120. Based on such a configuration, the movable assembly MA can be made more stable when moving along the main axis MX.

[0174] In addition, the optical element driving mechanism 100 may further include a plurality of second guide members 130, the movable assembly MA may have the aforementioned base 109 and a movable portion 108, and the movable portion 108 may move relative to the base 109 through the second guide member 130. The driving module DM may include a second driving assembly DA2 and a third driving assembly DA3, which are partially disposed on the base 109. When the optical element driving mechanism 100 is shaken, the second driving assembly DA2 and the third driving assembly DA3 may drive the movable portion 108 to move on the XY plane to achieve the purpose of optical image stabilization.

[0175] Although the embodiments and advantages of the present disclosure have been disclosed as above, it should be understood that those skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufactures, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any technician in the relevant technical field can understand the current or future developed processes, machines, manufactures, material compositions, devices, methods and steps from the disclosure of the present disclosure. As long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment.

Claims

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

2. The optical element driving mechanism according to claim 1, wherein The fixing assembly includes a housing and a base; The housing and the base are arranged along a main axis; The optical element driving mechanism also includes a first circuit component; The first circuit assembly has a main body, and the optical element is disposed on the main body; The main body is connected to the movable component; The first circuit assembly also has a cantilever connected between the main body and the housing; The cantilever extends from the main body, and the cantilever and the main body are formed as one piece; The driving module is configured to drive the movable component, the main body and the optical element to move along the main axis; The optical element driving mechanism further includes a first guiding component disposed between the base and the movable component; The first guide component has a columnar structure and extends along the main axis; The first guide member is configured to guide the movable component to move along the main axis; The optical element driving mechanism also includes a second circuit component fixedly disposed on the movable component; 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; 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 movable assembly includes a base and a movable part; The second circuit component is disposed on a side wall of the base; The optical element driving mechanism further comprises a plurality of second guiding components, which are arranged between the base and the movable part; The movable part moves relative to the base through a plurality of the second guide components; The optical element driving mechanism also includes a third circuit assembly disposed on a bottom plate of the base; The driving module also 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 relative to the base along a first axial direction; The first axial direction is perpendicular to the main axis; The drive module also includes a third drive component; The third driving assembly includes a third magnetic element and a third driving element; One of the third magnetic element and the third driving element is disposed on the third circuit component, and the other of the third magnetic element and the third driving element is 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 a second axial direction; The second axial direction is perpendicular to the first axial direction and the main axis.

4. The optical element driving mechanism according to claim 3, wherein The drive module also includes a fourth drive component; The fourth driving assembly includes a fourth driving element, which is disposed in the third circuit assembly and corresponds 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 portion to rotate relative to the base around the main axis.

5. The optical element driving mechanism according to claim 4, wherein The movable assembly also includes a bottom cover fixedly connected to the base; The bottom cover is configured to surround at least a portion of the movable portion; 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 metal; The bottom cover is provided with a first buffer component, configured to abut against the base when the movable component is located at a first extreme position; The first buffer component is made of plastic material; The first buffer component is formed on the bottom cover by insert injection molding technology.

6. The optical element driving mechanism according to claim 5, wherein The bottom cover has a side opening configured to accommodate a portion of the cantilever; The cantilever extends from the main body through the side opening; When viewed along the first axial direction, the bottom cover overlaps a portion of the main body; 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 the main body and a portion of the cantilever.

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

8. The optical element driving mechanism according to claim 7, wherein The third extension portion 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 smaller 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 also includes a stopper element connected to the cantilever; The stop element is fixedly connected to a portion 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 a connecting element; The second extension portion detachably corresponds to the second stop portion; No connecting element is arranged between the second extending portion and the second stopping portion; The second stopper is configured to stop and limit the second extension portion; When viewed along the second axial direction, an 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 portion has a plurality of accommodating grooves configured to respectively accommodate a plurality of the second guiding components; When viewed along the main axis, each of the plurality of receiving grooves has a circular structure; Each of the plurality of second guide members has a spherical structure; When viewed along the main axis, the size of the receiving groove is larger than the corresponding size of the second guide member; The material of the plurality of second guide components is different from the material of the movable part; The Young's modulus of the plurality of second guide members is different from the Young's modulus of the movable portion; The Young's modulus of the plurality of second guide members is more than ten times the Young's modulus of the movable part; The plurality of second guide members are made of ceramic material.

Images