Optical element driving mechanism

Abstract

The utility model provides an optical element driving mechanism. The optical element driving mechanism comprises a movable part, a fixed part and a driving assembly. The movable part is used for being connected with an optical element, and the movable part can move relative to the fixed part. The driving assembly is used for driving the movable part to move.

Description

Technical Field

[0001] This utility model relates to an optical element driving mechanism. More specifically, this utility model relates to an optical element driving mechanism with an adjustable aperture size. Background Technology

[0002] With the advancement of technology, many electronic devices today (such as cameras or smartphones) have photographic or video recording capabilities. However, incorporating lenses with longer focal lengths into these devices increases their thickness, hindering their miniaturization. Furthermore, current miniature camera modules on the market primarily use fixed-aperture designs, resulting in limited adjustability for image sharpness and light sensitivity in small, portable electronic devices. When the sensor can support the image and sufficient light source is available, a smaller aperture is needed to achieve better image resolution. However, using a fixed aperture leads to poor image quality in low-light conditions (such as at night). Therefore, a fixed aperture must compromise on photographic capabilities in different environments. Utility Model Content

[0003] The purpose of this invention is to provide an optical element driving mechanism to solve at least one of the above-mentioned problems.

[0004] This invention provides an optical element driving mechanism, including a movable part, a fixed part, and a driving assembly. The movable part is used to connect an optical element and is movable relative to the fixed part. The driving assembly is used to drive the movable part to move.

[0005] In some embodiments, the aforementioned fixing portion includes a first frame and a second frame. The first frame has a first frame surface. The second frame is fixedly connected to the first frame and has a second frame surface. The first frame has a first protrusion, and when viewed along an axial direction perpendicular to the first frame surface, the first protrusion does not overlap with the second frame surface. The second frame has a second protrusion, and when viewed along an axial direction, the second protrusion does not overlap with the first frame surface.

[0006] In some embodiments, the optical element driving mechanism includes: a first connecting element that contacts the first frame and the second frame; and a second connecting element that contacts the first frame and the second frame, wherein the first frame and the second frame are fixed to each other by the first connecting element and the second connecting element.

[0007] In some embodiments, the first connecting element directly contacts the first protrusion and the second frame, and the second connecting element directly contacts the second protrusion and the first frame. The second frame has a first side surface and a second side surface connected to the first side surface, and the radius of curvature of the first side surface is different from the radius of curvature of the second side surface. The first connecting element contacts the first side surface, and the second connecting element contacts the second side surface.

[0008] In some embodiments, the first connecting element and the second connecting element are integrally formed.

[0009] In some embodiments, the fixing part includes an outer frame that is fixedly connected to the first frame, and the first connecting element and the second connecting element are in direct contact with the outer frame.

[0010] In some embodiments, the first frame includes a first opening, the first opening including a first inner wall surface, a second inner wall surface, and a third inner wall surface. The outer frame includes a first positioning portion corresponding to the first opening, and the first positioning portion includes: a first positioning surface facing the first inner wall surface; a second positioning surface facing the second inner wall surface, and the first positioning surface and the second positioning surface facing opposite directions; and a third positioning surface facing the third inner wall surface, and the first positioning surface, the second positioning surface, and the third positioning surface facing different directions, wherein the shortest distance between the first positioning surface and the first inner wall surface is less than the shortest distance between the third positioning surface and the third inner wall surface, and wherein the shortest distance between the second positioning surface and the second inner wall surface is less than the shortest distance between the third positioning surface and the third inner wall surface.

[0011] In some embodiments, the first frame includes a second opening, the second opening including a fourth inner wall surface, a fifth inner wall surface, and a sixth inner wall surface. The outer frame includes a second positioning portion corresponding to the second opening, and the second positioning portion includes: a fourth positioning surface facing the fourth inner wall surface; a fifth positioning surface facing the fifth inner wall surface, and the fourth positioning surface and the fifth positioning surface facing opposite directions; and a sixth positioning surface facing the sixth inner wall surface, and the fourth positioning surface, the fifth positioning surface, and the sixth positioning surface facing different directions. The shortest distance between the fourth positioning surface and the fourth inner wall surface is less than the shortest distance between the sixth positioning surface and the sixth inner wall surface. The shortest distance between the fifth positioning surface and the fifth inner wall surface is less than the shortest distance between the sixth positioning surface and the sixth inner wall surface. When viewed along the axial direction, the line connecting the first positioning portion and the second positioning portion overlaps with the optical element.

[0012] In some embodiments, the second frame has a third opening, and the first corresponding portion corresponds to the third opening, wherein the optical element driving mechanism includes a third connecting element that directly contacts the first positioning portion, wherein the third connecting element directly contacts the first opening, wherein the third connecting element directly contacts the third opening, and wherein the third connecting element and the first connecting element are integrally formed.

[0013] In some embodiments, the optical element driving mechanism includes a stop assembly for restricting the movement of the movable part, and the stop assembly includes: a first stop element; a first corresponding portion corresponding to the first stop element, wherein when the movable part is in a first state, the first stop element contacts the first corresponding portion; a second stop element; a second corresponding portion corresponding to the second stop element, wherein when the movable part is in a second state, the second stop element contacts the second corresponding portion, wherein when the movable part is in the second state, the first stop element contacts the first corresponding portion, wherein when the movable part is in the first state, the second stop element does not contact the second corresponding portion, wherein a central axis of the movable part in the first state does not overlap with or parallel to the central axis of the movable part in the second state.

[0014] In some embodiments, the optical element driving mechanism includes a guide assembly, through which the movable portion can move relative to the fixed portion, and the guide assembly includes: an intermediate element; a first guide portion having a first guide surface facing the intermediate element, wherein the first guide portion is formed on the movable portion; a second guide portion having a second guide surface facing the intermediate element, wherein the first guide surface and the second guide surface face opposite directions; and a third guide portion having a third guide surface facing the intermediate element, wherein the first guide surface, the second guide surface, and the third guide surface face different directions.

[0015] In some embodiments, the active part includes an annular body, and the first guide portion protrudes from an outer surface of the annular body.

[0016] In some embodiments, the drive assembly includes: a coil disposed on the fixed portion and surrounding a receiving space; and a magnet disposed on the movable portion and corresponding to the coil, wherein at least a portion of the magnet is received in the receiving space.

[0017] In some embodiments, the magnet has an arc-shaped structure with a radius of curvature between 5 mm and 7 mm.

[0018] In some embodiments, the thickness of the magnet along the axial direction is less than the width of the receiving space along the axial direction.

[0019] In some embodiments, the second frame includes a protrusion that passes through the first frame, and the fixing part includes an outer frame with a recess formed on the surface of the outer frame facing the first frame, wherein the protrusion is received in the recess.

[0020] In some embodiments, the second frame includes a fixing post that passes through a shaft hole of the optical element, and the movable part includes a guide post that passes through a guide groove of the optical element. The fixing part includes an outer frame with a recess formed on the surface of the outer frame facing the first frame, and the fixing post and the guide post correspond to the recess.

[0021] In some embodiments, the drive assembly includes: a circuit board disposed on the fixing portion; a reinforcing element disposed on the circuit board and having a receiving groove; and a magnetic element received in the receiving groove. Attached Figure Description

[0022] The embodiments of this utility model can be better understood from the following detailed description and the accompanying drawings. It should be noted that, according to industry standard practice, the various components in the drawings are not necessarily drawn to scale. In fact, the dimensions of various components may be arbitrarily enlarged or reduced for clarity of illustration.

[0023] Figure 1 This is a schematic diagram of the optical element driving mechanism in one embodiment of the present invention.

[0024] Figure 2 This is an exploded view of the optical element driving mechanism in one embodiment of the present invention.

[0025] Figure 3 This is a partial schematic diagram of the optical element driving mechanism in one embodiment of the present invention after removing the outer frame.

[0026] Figure 4 This is a partial cross-sectional view of the optical element driving mechanism in one embodiment of the present invention.

[0027] Figure 5 This is a cross-sectional view of the optical element driving mechanism in one embodiment of the present invention.

[0028] Figure 6 This is a partial cross-sectional view of the optical element driving mechanism in one embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the outer frame in one embodiment of the present invention.

[0030] Figure 8 for Figure 1 A cross-sectional view along the AA direction.

[0031] Figure 9 This is a schematic diagram of the movable part, magnet, and light-shielding element in one embodiment of the present invention.

[0032] Figure 10 for Figure 1 A cross-sectional view along the BB direction.

[0033] Figure 11A This is a schematic diagram of the movable part and the base when the movable part is in the first state, according to one embodiment of the present invention.

[0034] Figure 11B This is a schematic diagram of the movable part and the base when the movable part is in the second state, according to one embodiment of the present invention.

[0035] Figure 12 for Figure 1 A cross-sectional view along the CC direction.

[0036] Figure 13 This is a bottom view of the optical element driving mechanism in one embodiment of the present invention after removing the base.

[0037] Figure 14 for Figure 1 A cross-sectional view along the DD direction.

[0038] The attached figures are labeled as follows:

[0039] 10: Optical element driving mechanism

[0040] 110: Outer frame

[0041] 111: First Positioning Unit

[0042] 111A: First positioning surface

[0043] 111B: Second positioning surface

[0044] 111C: Third positioning surface

[0045] 112: Second Positioning Unit

[0046] 112A: Fourth positioning surface

[0047] 112B: Fifth positioning surface

[0048] 112C: Sixth positioning surface

[0049] 113: Surface

[0050] 114: Depression

[0051] 120: First Frame

[0052] 121: First frame surface

[0053] 122: First protrusion

[0054] 123: First Opening

[0055] 123A: First inner wall surface

[0056] 123B: Second inner wall surface

[0057] 123C: Third inner wall surface

[0058] 124: Second opening

[0059] 124A: Fourth inner wall surface

[0060] 124B: Fifth inner wall surface

[0061] 124C: Sixth inner wall surface

[0062] 125: Perforation

[0063] 130: Second Frame

[0064] 131: Second frame surface

[0065] 132: Second protrusion

[0066] 133: Third opening

[0067] 134: Convex pillar

[0068] 135: Fixed Column

[0069] 138: First side view

[0070] 139: Second side view

[0071] 140: Base

[0072] 200: Activities Department

[0073] 210: Guide post

[0074] 220: Ring-shaped body

[0075] 221: Outer surface

[0076] 300: Driver Components

[0077] 310: Circuit board

[0078] 320: Coil

[0079] 321: Accommodation space

[0080] 330: Magnet

[0081] 340: Reinforcing element

[0082] 341: Groove

[0083] 350: Magnetic element

[0084] 360: Sensing Components

[0085] 400: Bootloader

[0086] 410: First Guiding Section

[0087] 411: First guiding surface

[0088] 420: Second Guiding Section

[0089] 421: Second guiding surface

[0090] 430: Third Guiding Section

[0091] 431: Third guiding surface

[0092] 440: Intermediate element

[0093] 500: Light-shielding element

[0094] 600: Optical Components

[0095] 610: Shaft hole

[0096] 620: Guide groove

[0097] 700: Stop assembly

[0098] 710: First stop element

[0099] 720: Second stop assembly

[0100] 730: First Corresponding Part

[0101] 740: Second Corresponding Part

[0102] AX: Central axis

[0103] C1: First connecting element

[0104] C2: Second connecting element

[0105] C3: Third connecting element

[0106] D1: The shortest distance between the first positioning surface and the first inner wall surface

[0107] D2: The shortest distance between the second positioning surface and the second inner wall surface

[0108] D3: The shortest distance between the third positioning surface and the third inner wall surface

[0109] D4: Shortest distance between the fourth positioning surface and the fourth inner wall surface

[0110] D5: The shortest distance between the fifth positioning surface and the fifth inner wall surface

[0111] D6: Shortest distance between the sixth positioning surface and the sixth inner wall surface

[0112] T: Thickness

[0113] W: Width Detailed Implementation

[0114] The following describes the optical element driving mechanism of an embodiment of the present invention. However, it will be readily apparent that the embodiments of the present invention provide many suitable inventive concepts and can be implemented in a wide range of specific contexts. The specific embodiments disclosed are merely illustrative of the use of the present invention in a particular manner and are not intended to limit the scope of the present invention.

[0115] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant art and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.

[0116] The following disclosure of this specification describes specific examples of the various components and their arrangements in order to simplify the explanation. Of course, these specific examples are not intended to limit the present invention. For example, if the following disclosure of this specification describes forming a first feature on or above a second feature, it means that it includes embodiments where the formed first feature and the formed second feature are in direct contact, and also includes embodiments where additional features may be formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. Furthermore, to facilitate the description of the relationship between one feature and another in the drawings, spatially related terms such as "below," "below," "under," "above," "above," and similar terms may be used. In addition to the orientations shown in the drawings, spatially related terms cover different orientations of the device during use or operation. The device may also be positioned otherwise (rotated 90 degrees or in other orientations), and the spatially related descriptions used herein may be interpreted accordingly.

[0117] Figure 1This is a schematic diagram of an optical element driving mechanism 10 according to an embodiment of the present invention. The aforementioned optical element driving mechanism 10 can, for example, be connected to a lens module (not shown) and can control the amount of light entering the lens module. For example, the optical element driving mechanism 10 can be an aperture mechanism, but is not limited thereto.

[0118] Figure 2 This is an exploded view of the aforementioned optical element driving mechanism 10. (See diagram below.) Figure 1 and Figure 2 As shown, the optical element driving mechanism 10 may include a fixed part 100, a movable part 200, a driving assembly 300, a guiding assembly 400, a light-shielding element 500, and a plurality of optical elements 600.

[0119] The fixing part 100 may include an outer frame 110, a first frame 120, a second frame 130, and a base 140. The outer frame 110 and the base 140 may be combined with each other to form a hollow box. The first frame 120, the second frame 130, the movable part 200, the drive assembly 300, the guide assembly 400, the light-shielding element 500, and the optical element 600 may be disposed in this hollow box to protect the aforementioned components and reduce interference from other electronic components to the optical element drive mechanism 10. The first frame 120 and the second frame 130 may be attached to the outer frame 110 and / or the base 140, so that the outer frame 110, the first frame 120, the second frame 130, and the base 140 may be fixed relative to each other.

[0120] The first frame 120 has a generally flat structure and can be mounted on one side of the second frame 130. The first frame 120 may have a first frame surface 121 facing the second frame 130, and the second frame 130 may have a second frame surface 131 facing the first frame 120. Figures 2 to 4 As shown, the second frame 130 may include a first side 138 and a second side 139 with different radii of curvature. Therefore, when the first frame 120 and the second frame 130 are connected, viewed from an axis perpendicular to the surface 121 of the first frame (Z-axis in the figure), the first frame 120 may have a first protrusion 122 that does not overlap with the surface 131 of the second frame, while the second frame 130 may have a second protrusion 132 that does not overlap with the surface 121 of the first frame. In this embodiment, the aforementioned first side 138 is a plane, and therefore its radius of curvature is infinitely large, but it is not limited to this.

[0121] When the user wishes to fix the outer frame 110, the first frame 120, and the second frame 130 together, the first connecting element C1 can contact the first side 138, the first frame surface 121 at the first protrusion 122, and the outer frame 110, and the second connecting element C2 can contact the side of the first frame 120, the second frame surface 131 at the second protrusion 132, and the outer frame 110. The first connecting element C1 and the second connecting element C2 can be adhesive, so the outer frame 110, the first frame 120, and the second frame 130 can be fixedly attached to each other through the first connecting element C1 and the second connecting element C2.

[0122] In some embodiments, the first connecting element C1 and the second connecting element C2 may be integrally formed, but this is not a limitation.

[0123] Please continue reading. Figures 2 to 4 The first frame 120 may have at least one first opening 123, the second frame 130 may have at least one third opening 133, and the outer frame 110 may have at least one first positioning portion 111. The first opening 123 and the third opening 133 may be aligned with each other, and the first positioning portion 111 may correspond to the first opening 123 and the third opening 133. In other words, when the outer frame 110, the first frame 120, and the second frame 130 are joined together, the first positioning portion 111 may enter the first opening 123 and the third opening 133 to position the outer frame 110. The third connecting element C3 may be filled into the first opening 123 and the third opening 133 and directly contact the first positioning portion 111, the first opening 123, and the third opening 133 to fix the outer frame 110, the first frame 120, and the second frame 130 to each other. The third connecting element C3 may also be an adhesive, and in some embodiments, the third connecting element C3 may be integrally formed with the first connecting element C1 and / or the second connecting element.

[0124] The first opening 123 may have a first inner wall surface 123A, a second inner wall surface 123B, and a third inner wall surface 123C. The first positioning part 111 may have a first positioning surface 111A, a second positioning surface 111B, and a third positioning surface 111C, which face the first inner wall surface 123A, the second inner wall surface 123B, and the third inner wall surface 123C, respectively. Therefore, the first positioning surface 111A, the second positioning surface 111B, and the third positioning surface 111C may face different directions, wherein the first positioning surface 111A and the second positioning surface 111B may face opposite directions. Specifically, the shortest distance D1 between the first positioning surface 111A and the first inner wall surface 123A can be less than the shortest distance D3 between the third positioning surface 111C and the third inner wall surface 123C, and the shortest distance D2 between the second positioning surface 111B and the second inner wall surface 123B can be less than the shortest distance D3 between the third positioning surface 111C and the third inner wall surface 123C, so as to facilitate the assembly of the optical element driving mechanism 10 and the positioning of the outer frame 110.

[0125] Please see Figure 5 and Figure 6 The first frame 120 may have at least one second opening 124, and the outer frame 110 may have at least one second positioning portion 112. When the outer frame 110, the first frame 120, and the second frame 130 are joined together, the second positioning portion 112 may enter the second opening 124 and the third opening 133 aligned with the second opening 124. The third connecting element C3 may fill the second opening 124 and the corresponding third opening 133, and directly contact the second positioning portion 112, the second opening 124, and the corresponding third opening 133, so that the outer frame 110, the first frame 120, and the second frame 130 are fixed together.

[0126] The second opening 124 may have a fourth inner wall surface 124A, a fifth inner wall surface 124B, and a sixth inner wall surface 124C. The second positioning part 112 may have a fourth positioning surface 112A, a fifth positioning surface 112B, and a sixth positioning surface 112C, which face the fourth inner wall surface 124A, the fifth inner wall surface 124B, and the sixth inner wall surface 124C, respectively. Therefore, the fourth positioning surface 112A, the fifth positioning surface 112B, and the sixth positioning surface 112C may face different directions, wherein the fourth positioning surface 112A and the fifth positioning surface 112B may face opposite directions. Specifically, the shortest distance D4 between the fourth positioning surface 112A and the fourth inner wall surface 124A can be less than the shortest distance D6 between the sixth positioning surface 112C and the sixth inner wall surface 124C, and the shortest distance D5 between the fifth positioning surface 112B and the fifth inner wall surface 124B can be less than the shortest distance D6 between the sixth positioning surface 112C and the sixth inner wall surface 124C, so as to facilitate the assembly of the optical element driving mechanism 10 and the positioning of the outer frame 110.

[0127] Additionally, it should be noted that, such as Figure 5 As shown, when viewed along the Z-axis, the line connecting the first positioning part 111 and the second positioning part 112 should overlap with at least one optical element 600.

[0128] like Figures 2 to 6 As shown, the second frame 130 may have a plurality of protrusions 134 protruding from the surface 131 of the second frame. These protrusions 134 can pass through corresponding perforations 125 on the first frame 120, so that the first frame 120 can be positioned when it is initially placed on the second frame 130.

[0129] like Figure 7 and Figure 8 As shown, in this embodiment, the outer frame 110 may form a plurality of recesses 114 on the surface 113 facing the first frame 120, and when the outer frame 110, the first frame 120 and the second frame 130 are combined with each other, the protrusions 134 of the second frame 130 may be accommodated in the recesses 114 of the outer frame 110.

[0130] Please see Figures 2 to 6 as well as Figure 9 The movable part 200 can be rotatably disposed in the hollow box formed by the outer frame 110 and the base 140, and can drive the optical element 600 to move when it rotates.

[0131] In detail, each optical element 600 may have a shaft hole 610 and a guide groove 620. The second frame 130 may have a fixing post 135 passing through the shaft hole 610, and the movable part 200 may have a guide post 210 passing through the guide groove 620. The diameter of the shaft hole 610 is approximately the same as the diameter of the fixing post 135, while the size of the guide groove 620 is larger than the size of the guide post 210. Therefore, when the movable part 200 rotates relative to the fixed part 100, the fixing post 135 can act as a pivot, and the guide post 210 can move along the guide groove 620, thereby applying a driving force to the optical element 600 to cause the optical element 600 to rotate around the fixing post 135.

[0132] like Figure 10 As shown, in this embodiment, the fixing post 135 and the guide post 210 can correspond to the recess 114 of the outer frame 110. Therefore, the fixing post 135 and the guide post 210 can be spaced apart from the outer frame 110, thus avoiding interference between the guide post 210 and the outer frame 110 when the movable part 200 moves. In some embodiments, the fixing post 135 and the guide post 210 can be accommodated in the recess 114 of the outer frame 110.

[0133] Please refer to the following: Figure 9 , Figure 11A and Figure 11B The optical element driving mechanism 10 may include a stop assembly 700. The stop assembly 700 may include at least one first stop element 710, at least one second stop element 720, at least one first corresponding portion 730, and at least one second corresponding portion 740. The first stop element 710 and the second stop element 720 are formed on the movable part 200, while the first corresponding portion 730 and the second corresponding portion 740 are formed on the base 140 of the fixed part 100. The line connecting the first stop element 710 and the second stop element 720 should pass through the central axis AX of the movable part 200 (i.e., the axis of rotation when the movable part 200 rotates).

[0134] like Figure 11A As shown, when the movable part 200 is in a first state, the first stop element 710 can contact the first corresponding part 730, thus limiting the range of motion of the movable part 200. At this time, the second stop element 720 and the second corresponding part 740 can be separated by a distance, so the second stop element 720 does not contact the second corresponding part 740.

[0135] like Figure 11BAs shown, when the optical element drive mechanism 10 malfunctions, causing the drive assembly 300 to continue driving the movable part 200 in the same direction after the movable part 200 is in the first state, the movable part 200 can move from the first state to the second state. At this time, the first stop element 710 still contacts the first corresponding part 730, and the second stop element 720 can contact the second corresponding part 740. The central axis AX of the movable part 200 in the second state may not overlap with or be parallel to the central axis AX in the first state. Because the movable part 200 deviates from its initial position, the driving force can be reduced, and the first stop element 710 and the second stop element 720 on both sides of the movable part 200 respectively abut against the first corresponding part 730 and the second corresponding part 740, thus effectively preventing the movable part 200 from overturning.

[0136] Please see Figure 2 and Figure 12 The drive assembly 300 may include at least one circuit board 310, at least one coil 320, at least one magnet 330, and at least one reinforcing element 340. The circuit board 310 may be fixed to the fixing part 100, and the coil 320 may be disposed on the circuit board 310. The magnet 330 may be disposed on the movable part 200, and the position of the magnet 330 may correspond to the position of the coil 320.

[0137] When current flows through the coil 320, a driving force is generated between the coil 320 and the magnet 330 to rotate the movable part 200. Specifically, the coil 320 can surround a receiving space 321, and the width W of the receiving space 321 in the Z-axis direction is greater than the thickness T of the magnet 330 in the Z-axis direction. Therefore, at least a portion of the magnet 330 can be accommodated in this receiving space 321, facilitating miniaturization of the optical element driving mechanism 10.

[0138] In this embodiment, the magnet 330 may have an arc-shaped structure with a radius of curvature between 5 mm and 7 mm (e.g., 5.6 mm), but is not limited thereto.

[0139] The reinforcing element 340 may be disposed on the circuit board 310, and the circuit board 310 may be located between the coil 320 and the reinforcing element 340. The reinforcing element 340 may be made of a material with sufficient rigidity to prevent the circuit board 310 from undergoing undesirable bending.

[0140] In this embodiment, the reinforcing element 340 may be provided with a receiving groove 341, and the magnetic element 350 may be disposed in the receiving groove 341. Therefore, the driving force of the driving component 300 can be increased while the optical element driving mechanism 10 is kept miniaturized.

[0141] Additionally, the drive assembly 300 may include a sensing element 360, which can be housed in the receiving space 321 and can confirm the state of the active part 200 by sensing the magnetic field of the magnet 330. For example, the sensing element 360 may be a Hall sensor, a magnetoresistance effect sensor (MR sensor), a giant magnetoresistance effect sensor (GMR sensor), a tunneling magnetoresistance effect sensor (TMR sensor), or a fluxgate sensor.

[0142] Please see Figure 13 and Figure 14 The guide assembly 400 may include at least one first guide portion 410, at least one second guide portion 420, at least one third guide portion 430, and at least one intermediary element 440, wherein the intermediary element 440 may be a sphere. The first guide portion 410 is formed on the movable portion 200 and has a first guide surface 411 facing and contacting the intermediary element 440. The second guide portion 420 is formed on the second frame 130 and has a second guide surface 421 facing and contacting the intermediary element 440, and the third guide portion 430 is formed on the base 140 and has a third guide surface 431 facing and contacting the intermediary element 440.

[0143] The first guide surface 411 and the second guide surface 421 may face approximately in opposite directions, and the normal direction of the third guide surface 431 may be approximately perpendicular to the normal direction of the first guide surface 411 and the normal direction of the second guide surface 421. In this embodiment, the second guide portion 420 has two second guide surfaces 421, and an included angle greater than 0 degrees and less than 180 degrees is formed between the two second guide surfaces 421.

[0144] In addition, such as Figure 9 As shown, in this embodiment, the movable part 200 may include an annular body 220, and the first guide part 410 is connected to the annular body 220 and protrudes from the outer surface 221 of the annular body 220. Therefore, the movable part 200 does not have a groove for accommodating the intermediate element 440, which allows the movable part 200 to rotate more smoothly.

[0145] Please return Figure 2 The light-shielding element 500 can be disposed between the movable part 200 and the optical element 600, and it can be made of a low-reflectivity material, thereby improving the optical performance of the optical element drive mechanism 10. In some embodiments, the light-shielding element 500 may be omitted.

[0146] In summary, this utility model provides an optical element driving mechanism, including a movable part, a fixed part, and a driving assembly. The movable part is used to connect an optical element, and the movable part is movable relative to the fixed part. The driving assembly is used to drive the movable part to move.

[0147] In some embodiments, the aforementioned fixing portion includes a first frame and a second frame. The first frame has a first frame surface. The second frame is fixedly connected to the first frame and has a second frame surface. The first frame has a first protrusion, and when viewed along an axial direction perpendicular to the first frame surface, the first protrusion does not overlap with the second frame surface. The second frame has a second protrusion, and when viewed along an axial direction, the second protrusion does not overlap with the first frame surface.

[0148] While the embodiments and advantages of this utility model have been disclosed above, it should be understood that those skilled in the art can make modifications, substitutions, and refinements without departing from the spirit and scope of this utility model. Furthermore, the scope of protection of this utility model is not limited to the processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps described in the specific embodiments of the specification. Any processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps currently in development or to be developed in the future can be understood from the disclosure of this utility model, and can be used according to this utility model as long as they can perform substantially the same function or obtain substantially the same results in the embodiments described herein. Therefore, the scope of protection of this utility model includes the aforementioned processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of this utility model also includes combinations of the various claims and embodiments.

[0149] Although the present invention has been disclosed above with reference to several preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the appended claims. Furthermore, each claim constitutes an independent embodiment, and combinations of various claims and embodiments are all within the scope of this invention.

Claims

1. An optical element driving mechanism, characterized in that, include: A movable part for connecting an optical element; A fixed part, wherein the movable part is movable relative to the fixed part; as well as A drive component is used to drive the movement of the moving part. The fixing part includes: A first frame having a first frame surface; as well as A second frame, fixedly connected to the first frame, and having a second frame surface. The surface of the first frame faces the surface of the second frame. The first frame has a first protrusion, and when viewed along an axis perpendicular to the surface of the first frame, the first protrusion does not overlap with the surface of the second frame. The second frame has a second protrusion, and when viewed along the axial direction, the second protrusion does not overlap with the surface of the first frame.

2. The optical element driving mechanism as described in claim 1, characterized in that, The optical element driving mechanism includes: A first connecting element contacts the first frame and the second frame; and A second connecting element contacts the first frame and the second frame, wherein the first frame and the second frame are fixed to each other by the first connecting element and the second connecting element.

3. The optical element driving mechanism as described in claim 2, characterized in that, The first connecting element directly contacts the first protrusion and the second frame. The second connecting element directly contacts the second protrusion and the first frame. The second frame has a first side and a second side connected to the first side, wherein the radius of curvature of the first side is different from the radius of curvature of the second side. The first connecting element contacts the first side surface. The second connecting element contacts the second side.

4. The optical element driving mechanism as described in claim 3, characterized in that, The first connecting element and the second connecting element are integrally formed.

5. The optical element driving mechanism as described in claim 2, characterized in that, The fixing part includes an outer frame that is fixedly connected to the first frame, and the first connecting element and the second connecting element are in direct contact with the outer frame.

6. The optical element driving mechanism as described in claim 5, characterized in that, The first frame includes a first opening, the first opening including a first inner wall surface, a second inner wall surface, and a third inner wall surface. The outer frame includes a first positioning portion corresponding to the first opening, and the first positioning portion includes: A first positioning surface faces the first inner wall surface; A second positioning surface, facing the second inner wall surface, and the first positioning surface and the second positioning surface facing opposite directions; and A third positioning surface faces the third inner wall surface, and the first positioning surface, the second positioning surface, and the third positioning surface face different directions. The shortest distance between the first positioning surface and the first inner wall surface is less than the shortest distance between the third positioning surface and the third inner wall surface. The shortest distance between the second positioning surface and the second inner wall surface is less than the shortest distance between the third positioning surface and the third inner wall surface.

7. The optical element driving mechanism as described in claim 6, characterized in that, The first frame includes a second opening, the second opening including a fourth inner wall surface, a fifth inner wall surface, and a sixth inner wall surface. The outer frame includes a second positioning portion corresponding to the second opening, and the second positioning portion includes: A fourth positioning surface, facing the fourth inner wall surface; A fifth positioning surface, facing the fifth inner wall surface, and the fourth positioning surface and the fifth positioning surface facing opposite directions; and A sixth positioning surface faces the sixth inner wall surface, and the fourth, fifth, and sixth positioning surfaces face different directions. The shortest distance between the fourth positioning surface and the fourth inner wall surface is less than the shortest distance between the sixth positioning surface and the sixth inner wall surface. The shortest distance between the fifth positioning surface and the fifth inner wall surface is less than the shortest distance between the sixth positioning surface and the sixth inner wall surface. When viewed along the axial direction, the line connecting the first positioning part and the second positioning part overlaps with the optical element.

8. The optical element driving mechanism as described in claim 6, characterized in that, The second frame has a third opening, and the first corresponding portion corresponds to the third opening. The optical element driving mechanism includes a third connecting element that directly contacts the first positioning part. The third connecting element is in direct contact with the first opening. The third connecting element is in direct contact with the third opening. The third connecting element and the first connecting element are integrally formed.

9. The optical element driving mechanism as described in claim 1, characterized in that, The optical element drive mechanism includes a stop assembly for limiting the movement of the movable part, and the stop assembly includes: First stopping element; A first corresponding part corresponds to the first stop element, wherein when the movable part is in a first state, the first stop element contacts the first corresponding part; A second stop element; A second corresponding portion corresponds to the second stop element, wherein when the movable portion is in a second state, the second stop element contacts the second corresponding portion. When the movable part is in the second state, the first stop element contacts the first corresponding part. When the movable part is in the first state, the second stop element does not contact the second corresponding part. When the active part is in the first state, a central axis of the active part does not overlap with or is not parallel to the central axis of the active part when the active part is in the second state.

10. The optical element driving mechanism as claimed in claim 1, characterized in that, The optical element driving mechanism includes a guide assembly, through which the movable part can move relative to the fixed part, and the guide assembly includes: An intermediate component; A first guide portion having a first guide surface facing the intermediate element, wherein the first guide portion is formed on the movable portion; A second guide portion having a second guide surface facing the intermediate element, wherein the first guide surface and the second guide surface face opposite directions; and A third guide portion has a third guide surface facing the intermediate element, and the first guide surface, the second guide surface, and the third guide surface face different directions.

11. The optical element driving mechanism as described in claim 10, characterized in that, The active part includes an annular body, and the first guide portion protrudes from an outer surface of the annular body.

12. The optical element driving mechanism as described in claim 1, characterized in that, The driver component includes: A coil, disposed on the fixing part and surrounding a receiving space; and A magnet is disposed on the movable part and corresponding to the coil, wherein at least a portion of the magnet is housed in the receiving space.

13. The optical element driving mechanism as described in claim 12, characterized in that, The magnet has an arc-shaped structure with a radius of curvature between 5 mm and 7 mm.

14. The optical element driving mechanism as described in claim 12, characterized in that, The thickness of the magnet along the axial direction is less than the width of the receiving space along the axial direction.

15. The optical element driving mechanism as described in claim 1, characterized in that, The second frame includes a protruding post that passes through the first frame. The fixing part includes an outer frame, and a recess is formed on the surface of the outer frame facing the first frame, wherein the protruding post is received in the recess.

16. The optical element driving mechanism as claimed in claim 1, characterized in that, The second frame includes a fixed post that passes through a shaft hole of the optical element, and the movable part includes a guide post that passes through a guide groove of the optical element. The fixed part includes an outer frame with a recess formed on the surface of the outer frame facing the first frame, and the fixed post and the guide post correspond to the recess.

17. The optical element driving mechanism as claimed in claim 1, characterized in that, The driver component includes: A circuit board is mounted on the fixing part; A reinforcing element is disposed on the circuit board and has a receiving recess; and A magnetic element is housed in the receiving groove.

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