Optical element driving mechanism

Abstract

The invention provides an optical element driving mechanism. The optical element driving mechanism comprises a first movable part, a fixed part and a first driving assembly. The first movable part is used for connecting a first optical element. The fixed part has a main shaft. The first movable part can move relative to the fixed part. The first driving assembly is used for driving the first movable part to move relative to the fixed part.

Description

Technical Field

[0001] The invention relates to an optical element driving mechanism, and in particular to an optical element driving mechanism with a driving component. 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. These electronic devices are becoming more and more popular and are developing in the direction of convenient and miniaturized design to provide users with more choices.

[0003] The aforementioned electronic devices with camera or video recording functions are usually equipped with an optical element driving mechanism, and light can pass through the optical elements (e.g., shutter blades, filters, lenses, etc.) to form an image on the photosensitive element. The trend of mobile devices today is miniaturization and lightness, so how to effectively miniaturize the optical element driving mechanism has become an important issue. Summary of the invention

[0004] In view of this, the present invention provides an optical element driving mechanism to solve the above-mentioned problem.

[0005] The present invention provides an optical element driving mechanism. The optical element driving mechanism comprises a first movable part, a fixed part and a first driving assembly. The first movable part is used to connect a first optical element. The fixed part has a main shaft. The first movable part can move relative to the fixed part. The first driving assembly is used to drive the first movable part to move relative to the fixed part.

[0006] According to some embodiments of the present invention, when viewed along the principal axis, the geometric center of the fixed portion does not overlap with the geometric center of the first optical element. When viewed along the principal axis, the first optical element has a polygonal structure. When viewed along the principal axis, the geometric center of the first movable portion does not overlap with the geometric center of the first optical element.

[0007] According to some embodiments of the present invention, a first circuit component is further included, which includes an opening corresponding to the first optical element, and the fixed portion has a first side and a second side; wherein, when observed along the main axis, the opening has a polygonal structure, and the geometric center of the opening does not overlap with the geometric center of the first movable portion; wherein, when observed along the main axis, the opening includes a first boundary and a second boundary, and the length of the first boundary is greater than the length of the second boundary; wherein, when observed along the main axis, the first boundary is adjacent to the first side of the fixed portion; wherein, when observed along the main axis, the second boundary is adjacent to the second side of the fixed portion.

[0008] According to some embodiments of the present invention, the first driving component includes a first driving part and a second driving part, and when observed along the main axis, the first driving part is located on the first side; when observed along the main axis, the second driving part is located on the second side; when observed along the main axis, the shortest distance between the first boundary and the first side is different from the shortest distance between the second boundary and the second side; when observed along the main axis, the first boundary and the first side are parallel to each other, and the second boundary and the second side are parallel to each other; when observed along the main axis, the shortest distance between the first boundary and the first side is greater than the shortest distance between the second boundary and the second side; wherein the first driving part includes a first magnetic element, a first coil and a second coil, and the second driving part includes a second magnetic element and a third coil, and when observed along the main axis, the first magnetic element The area of ​​the element is different from the area of ​​the second magnetic element; when observed along the main axis, the area of ​​the first magnetic element is larger than the area of ​​the second magnetic element; when observed along the main axis, the first coil and the second coil are located on the first side; when observed along the main axis, in the extension direction of the first side, the maximum size of the first coil is different from the maximum size of the second coil; when observed along the main axis, in the extension direction of the first side, the maximum size of the first coil is smaller than the maximum size of the second coil; when observed along the main axis, the third coil is located on the second side; when observed along the main axis, the shortest distance between the first coil and the third coil is different from the shortest distance between the second coil and the third coil; when observed along the main axis, the shortest distance between the first coil and the third coil is greater than the shortest distance between the second coil and the third coil.

[0009] According to some embodiments of the present invention, a first supporting component is further included, and the first movable part can move relative to the fixed part via the first supporting component, and the first supporting component includes: an intermediate element; a corresponding element, which corresponds to the intermediate element and can move relative to the intermediate element; a force-applying element, which is used to apply a first stabilizing force to the first movable part so that the intermediate element contacts the corresponding element; wherein the force-applying element corresponds to the second magnetic element to generate the first stabilizing force, the force-applying element has a magnetically conductive material, and the third coil is located between the force-applying element and the second magnetic element; when observed along the main axis, the intermediate element at least partially overlaps with the space surrounded by the third coil; when observed along a direction perpendicular to the main axis, the intermediate element and the third coil at least partially overlap.

[0010] According to some embodiments of the present invention, the second magnetic element includes a first magnetic portion and a second magnetic portion, and the corresponding element is arranged on the first magnetic portion; the corresponding element has a metal material; when observed along the main axis, the corresponding element is located between the first magnetic portion and the second magnetic portion; the magnetic pole arrangement direction of the first magnetic portion is opposite to the magnetic pole arrangement direction of the second magnetic portion; a corresponding surface of the corresponding element faces the intermediate element, and the corresponding surface is not parallel to the magnetic pole arrangement direction of the first magnetic portion; in the magnetic pole arrangement direction of the first magnetic portion, the maximum size of the first magnetic portion is different from the maximum size of the corresponding element.

[0011] According to some embodiments of the present invention, in the magnetic pole arrangement direction of the first magnetic part, the maximum size of the first magnetic part is larger than the maximum size of the corresponding element; wherein the first magnetic part includes a first magnetic surface and a second magnetic surface, the first magnetic surface faces the third coil, and the second magnetic surface faces the opposite direction of the first magnetic surface; wherein the second magnetic part includes a third magnetic surface and a fourth magnetic surface, the third magnetic surface faces the third coil, and the fourth magnetic surface faces the opposite direction of the third magnetic surface; wherein the shortest distance between the first magnetic surface and the third magnetic surface is different from the shortest distance between the second magnetic surface and the fourth magnetic surface, and the shortest distance between the first magnetic surface and the third magnetic surface is smaller than the shortest distance between the second magnetic surface and the fourth magnetic surface.

[0012] According to some embodiments of the present invention, it also includes a first circuit component, which is used to electrically connect an external circuit, and the first circuit component includes a first circuit part, and the first circuit part includes an external circuit, wherein the fixed part includes: a shell, having a top surface and a accommodating space, the top surface including an external interface and the top surface has a metal material; a frame, arranged in the accommodating space of the shell, the frame including a frame surface, a first supporting part and a second supporting part; wherein the first circuit part is at least partially located between the shell and the frame, and the external circuit is at least partially exposed to the external interface of the top surface, the first circuit part has a plate-like structure, the frame has a resin material, the frame surface of the frame faces the top surface of the shell, and the second supporting part of the frame is provided. A support portion directly contacts the top surface, the first support portion protrudes from the frame surface, the second support portion of the frame corresponds to the first circuit portion, and the shortest distance between the first support portion and the top surface is smaller than the shortest distance between the second support portion and the top surface; when observed along a direction parallel to the frame surface, the first circuit portion and the first support portion at least partially overlap; when observed along a direction parallel to the frame surface, the first circuit portion and the second support portion do not overlap; when observed along a direction perpendicular to the frame surface, the second support portion and the external interface at least partially overlap; the shortest distance between the first circuit portion and the top surface is different from the shortest distance between the first circuit portion and the second support portion; the shortest distance between the first circuit portion and the top surface is greater than the shortest distance between the first circuit portion and the second support portion.

[0013] According to some embodiments of the present invention, it also includes a second movable part, a second circuit component and a third circuit component. The second circuit component is arranged on the second movable part, the third circuit component is movably connected to the frame and the second movable part, the third circuit component is used to electrically connect to an optical module, and the third circuit component is at least partially located between the first circuit part and the frame.

[0014] According to some embodiments of the present invention, it also includes a second movable part, a second circuit component and a third circuit component, the second circuit component is arranged on the second movable part, the third circuit component is used to be electrically connected to an optical module, and the top surface is at least partially located between the first circuit part and the third circuit component. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following will be described in detail with reference to the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not drawn to scale and are only used for illustration purposes. In fact, the size of the components may be arbitrarily enlarged or reduced to clearly show the features of the present invention.

[0016] Figure 1is a stereoscopic diagram of an optical element driving mechanism according to some embodiments of the present invention.

[0017] Figure 2 is an exploded view of an optical element driving mechanism according to some embodiments of the present invention.

[0018] Figure 3 It is a three-dimensional view of the optical element driving mechanism without showing the housing.

[0019] Figure 4 is a perspective view of a portion of a first circuit member according to some embodiments of the present invention.

[0020] Figure 5 is a perspective view of a portion of an optical element driving mechanism according to some embodiments of the present invention.

[0021] Figure 6 Display along Figure 1 Partial cross-sectional view of the optical element driving mechanism taken along line AA'.

[0022] Figure 7 An exploded schematic diagram showing the first optical element corresponding to the opening of the first circuit member.

[0023] Figure 8 A bottom view of an optical element drive mechanism according to some embodiments of the present invention is shown.

[0024] Fig. 9 For along Figure 1 A cross-sectional view of the optical element driving mechanism taken along line BB' in FIG.

[0025] Fig.10 A top view showing a portion of an optical element driving mechanism according to some embodiments of the present invention.

[0026] Fig.11 For along Figure 1 A cross-sectional view of the optical element driving mechanism taken along line CC'.

[0027] Fig. 12A A schematic side view showing a second driving portion and corresponding elements according to an embodiment of the present invention.

[0028] Fig. 12B A schematic side view showing a second driving portion and corresponding elements according to another embodiment of the present invention.

[0029] Fig.13 A block diagram showing an optical element driving mechanism according to some embodiments of the present invention.

[0030] Fig.14 is a stereoscopic diagram of an optical element driving mechanism according to another embodiment of the present invention.

[0031] The following are the descriptions of the reference numerals:

[0032] 1000,1000B: Optical element drive mechanism

[0033] 1100:Fixed part

[0034] 1101: first side

[0035] 1102: Second side

[0036] 1103: Third side

[0037] 1104: Fourth side

[0038] 1110: Shell

[0039] 1111: Top surface

[0040] 1112: External interface

[0041] 1113: Accommodation Space

[0042] 1120,1120B:Frame

[0043] 1121: first support part

[0044] 1122: Second support portion

[0045] 1122-1: Frame surface

[0046] 1200: First Activity Department

[0047] 1300: Second Activity Unit

[0048] 1400: first drive assembly

[0049] 1410: First driving unit

[0050] 1411: first magnetic element

[0051] 1412: First coil

[0052] 1413: Second coil

[0053] 1420, 1420A: Second drive unit

[0054] 1421: Second magnetic element

[0055] 1421-1,1421-1A: First Magnetic Section

[0056] 1421-11A: First magnetic surface

[0057] 1421-12A: Second magnetic surface

[0058] 1421-2,1421-2A: Second magnetic part

[0059] 1421-21A: Third magnetic surface

[0060] 1421-22A: Fourth magnetic surface

[0061] 1422,1422A: The third coil

[0062] 1500: First circuit component

[0063] 1510, 1510B: first circuit unit

[0064] 1511: Opening

[0065] 1512: External circuit

[0066] 1520: Second circuit unit

[0067] 1530: Opening

[0068] 1531: The First Frontier

[0069] 1532: The Second Frontier

[0070] 1540: Flexible part

[0071] 1600: Second drive assembly

[0072] 1610:Magnetic components

[0073] 1620: Coil

[0074] 1630: Magnetic element

[0075] 1700: Second circuit component

[0076] 1810: First support assembly

[0077] 1811:Intermediate Component

[0078] 1812: Force element

[0079] 1813,1813A: Corresponding components

[0080] 1813-1: Corresponding Surface

[0081] 1820: Second support assembly

[0082] 1830,1830B: Third support assembly

[0083] 1910, 1920, 1930, 1940: Sensing elements

[0084] 2000: First optical element

[0085] 3000: Second optical element

[0086] 4000: Optical module

[0087] C: Spindle

[0088] C1, C2: Geometric center

[0089] D1,D2: shortest distance

[0090] X,Y,Z: axis DETAILED DESCRIPTION

[0091] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill 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 invention, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0092] 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 mean 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 such ordinal numbers is only used to clearly distinguish a requested element with a certain name from another requested element with the same name.

[0093] In addition, in some embodiments of the present invention, 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 specifically defined. Such terms may also include situations where both structures are movable or both structures are fixed.

[0094] Figure 1 is a stereoscopic diagram of an optical element driving mechanism 1000 according to some embodiments of the present invention.

[0095] Figure 2 FIG. 1 is an exploded view of an optical element driving mechanism 1000 according to some embodiments of the present invention. Figure 1 as well as Figure 2 .

[0096] like Figure 1 as well as Figure 2As shown in the figure, the optical element driving mechanism 1000 includes a fixed part 1100, a first movable part 1200, a second movable part 1300, a first driving component 1400, a first circuit component 1500, a second driving component 1600, a second circuit component 1700, a first supporting component 1810, a second supporting component 1820, a third supporting component 1830 and four sensing elements 1910, 1920, 1930, 1940.

[0097] like Figure 1 As shown in FIG. 1 , according to some embodiments of the present invention, the fixing portion 1100 has a main axis C, a first side 1101, a second side 1102, a third side 1103, and a fourth side 1104. The main axis C can be regarded as a geometric center axis running through the optical element driving mechanism 1000.

[0098] According to some embodiments of the present invention, the first side 1101 is adjacent to the second side 1102. The third side 1103 is adjacent to the fourth side 1104. The first side 1101 and the third side 1103 are two opposite sides of the fixing portion 1100. The second side 1102 and the fourth side 1104 are two opposite sides of the fixing portion 1100.

[0099] like Figure 2 As shown in FIG. 1 , according to some embodiments of the present invention, the fixing portion 1100 includes a housing 1110 and a frame 1120. The housing 1110 is fixedly connected to the frame 1120 to form a space for accommodating other components of the optical element driving mechanism 1000.

[0100] According to some embodiments of the present invention, the first movable portion 1200 is used to connect the first optical element 2000 ( Figure 7 , Fig.13 In this embodiment, the first optical element 2000 is a photosensitive element. The first movable portion 1200 can rotate and translate relative to the fixed portion 1100 to achieve an optical image stabilization (OIS) optical effect.

[0101] According to some embodiments of the present invention, the second movable portion 1300 is used to connect the second optical element 3000 ( Fig.13 In this embodiment, the second optical element 3000 is a lens assembly. The second movable portion 1300 can move relative to the fixed portion 1100 on the Z axis to achieve an optical effect of auto focus (AF).

[0102] According to some embodiments of the present invention, the first driving assembly 1400 is used to drive the first movable part 1200 to move relative to the fixed part 1100. The first driving assembly 1400 includes a first driving part 1410 and a second driving part 1420. The first circuit component 1500 movably connects the first movable part 1200 to the frame 1120 of the fixed part 1100. The first circuit component 1500 corresponds to the first optical element 2000 ( Figure 7 ).

[0103] like Figure 2 As shown in FIG. 1 , the first driving unit 1410 includes a first magnetic element 1411 , a first coil 1412 , and a second coil 1413 . The second driving unit 1420 includes a second magnetic element 1421 and a third coil 1422 .

[0104] According to some embodiments of the present invention, the first magnetic element 1411 and the second magnetic element 1421 are disposed on the frame 1120 of the fixing portion 1100. The first coil 1412, the second coil 1413 and the third coil 1422 are disposed on the first circuit member 1500. The first coil 1412, the second coil 1413 and the third coil 1422 are independently controlled.

[0105] In this way, when a driving signal is applied to the first driving component 1400 (for example, current is applied through an external power supply), the first driving part 1410 and the second driving part 1420 respectively generate electromagnetic induction forces to drive the first movable part 1200 to move relative to the fixed part 1100 to achieve the desired optical effect.

[0106] For example, the electromagnetic induction force generated between the first coil 1412 , the second coil 1413 and the first magnetic element 1411 , and between the third coil 1422 and the second magnetic element 1421 can drive the first movable portion 1200 to rotate counterclockwise or clockwise relative to the fixed portion 1100 .

[0107] Alternatively, the electromagnetic induction force generated between the second coil 1413 and the first magnetic element 1411 and between the third coil 1422 and the second magnetic element 1421 can drive the first movable portion 1200 to translate relative to the fixed portion 1100 in the XY plane.

[0108] According to some embodiments of the present invention, the second driving component 1600 is used to drive the second movable part 1300 to move relative to the fixed part 1100. The second driving component 1600 includes a magnetic element 1610, a coil 1620 and a magnetic conductive element 1630. The magnetic element 1610 is disposed on the second movable part 1300. The coil 1620 and the magnetic conductive element 1630 are disposed on two opposite surfaces of the second circuit component 1700.

[0109] In this way, when a driving signal is applied to the second driving component 1600 (for example, by applying current through an external power supply), an electromagnetic induction force is generated between the coil 1620 and the magnetic element 1610, driving the second movable part 1300 to move in the direction of the Z axis relative to the fixed part 1100, thereby achieving the desired optical effect.

[0110] According to some embodiments of the present invention, the second circuit member 1700 is disposed on the frame 1120 of the fixing portion 1100. The coil 1620 is electrically connected to the second circuit member 1700.

[0111] According to some embodiments of the present invention, the first supporting assembly 1810 supports the first movable portion 1200 to move relative to the fixed portion 1100. That is, the first movable portion 1200 can move relative to the fixed portion 1100 via the first supporting assembly 1810. The first supporting assembly 1810 includes an intermediate element 1811, a force applying element 1812, and a corresponding element 1813, the details of which will be referred to later. Fig.11 Detailed description.

[0112] According to some embodiments of the present invention, the second supporting assembly 1820 supports the second movable portion 1300 to move relative to the fixed portion 1100. In this embodiment, the second supporting assembly 1820 may be a pair of guide rods. The second supporting assembly 1820 is disposed on the frame 1120 at one side corresponding to the magnetic element 1610.

[0113] In this way, an attractive force is generated between the magnetic element 1610 disposed on the second movable part 1300 and the magnetic conductive element 1630 disposed on the frame 1120 (the magnetic conductive element 1630 is indirectly disposed on the frame 1120 through the second circuit component 1700), so that the second movable part 1300 leans against the second supporting component 1820, and the movement of the second movable part 1300 relative to the fixed part 1100 is more stable, and it is not easy to shake or overturn, thereby improving the accuracy of autofocus. According to some embodiments of the present invention, the third supporting component 1830 is a spring sheet that movably connects the frame 1120 and the second movable part 1300.

[0114] According to some embodiments of the present invention, sensing elements 1910, 1920, and 1930 are all arranged on the first circuit component 1500, wherein the sensing element 1910 is positioned in the hollow position of the annular structure of the first coil 1412, the sensing element 1920 is positioned in the hollow position of the annular structure of the second coil 1413, and the sensing element 1930 is positioned in the hollow position of the annular structure of the third coil 1422.

[0115] According to some embodiments of the present invention, the sensing elements 1910 and 1920 correspond to the first magnetic element 1411. The sensing element 1930 corresponds to the second magnetic element 1421. In detail, the sensing elements 1910 and 1920 can sense the magnetic field changes of the first magnetic element 1411, and the sensing element 1930 can sense the magnetic field changes of the second magnetic element 1421, and the position of the first movable part 1200 relative to the fixed part 1100 is determined through a control element (not shown).

[0116] According to some embodiments of the present invention, the sensing element 1910 can sense the rotational motion of the first movable part 1200 relative to the fixed part 1100. The sensing elements 1920 and 1930 can sense the translational motion of the first movable part 1200 relative to the fixed part 1100 in the XY plane.

[0117] According to some embodiments of the present invention, the sensing element 1940 is disposed on the second circuit member 1700, wherein the sensing element 1940 is positioned in the hollow position of the annular structure of the coil 1620. The sensing element 1940 may be an all-in-one IC that packages a sensing integrated circuit and a control integrated circuit in the same package, and the sensing element 1940 determines the position of the second movable part 1300 by sensing the magnetic field change of the magnetic element 1610, and then controls the second movable part 1300 to move to a desired position, so as to achieve closed-loop control.

[0118] Figure 3 FIG. 1 is a three-dimensional view of the optical element driving mechanism 1000 without showing the housing 1110 . Figure 4 is a perspective view of a portion of a first circuit member 1500 according to some embodiments of the present invention. Figure 5 FIG. 1 is a perspective view of a portion of an optical element driving mechanism 1000 according to some embodiments of the present invention. Figures 3 to 5 .

[0119] like Figures 3 to 5 As shown in FIG. 1 , the frame 1120 includes a first supporting portion 1121 and a second supporting portion 1122 . The first circuit component 1500 includes two first circuit portions 1510 , a second circuit portion 1520 , an opening 1530 and two flexible portions 1540 .

[0120] According to some embodiments of the present invention, the first circuit member 1500 is used to electrically connect to an external circuit (not shown). The first circuit portion 1510 is a portion of the first circuit member 1500 disposed on the second support portion 1122 of the frame 1120 .

[0121] The two first circuit portions 1510 each include an opening 1511 and a pair of external circuits 1512 ( Figure 1). The first support portion 1121 protrudes from the second support portion 1122 , and the first support portion 1121 passes through the opening 1511 of the first circuit portion 1510 to position the first circuit portion 1510 on the second support portion 1122 .

[0122] According to some embodiments of the present invention, the second circuit portion 1520 of the first circuit member 1500 is connected to the first movable portion 1200. The second circuit portion 1520 is parallel to the first circuit portion 1510. The opening 1530 of the first circuit member 1500 is positioned on the second circuit portion 1520 and corresponds to the first optical element 2000 ( Figure 7 ).

[0123] According to some embodiments of the present invention, two ends of the flexible portion 1540 of the first circuit member 1500 are respectively movably connected to the first circuit portion 1510 and the second circuit portion 1520, so that the first movable portion 1200 can move relative to the frame 1120. The flexible portion 1540 is not parallel to the first circuit portion 1510 and the second circuit portion 1520.

[0124] Please refer to the back Figure 1 The housing 1110 includes a top surface 1111. The top surface 1111 includes two external interfaces 1112. The top surface 1111 can be made of metal material. Figure 1 The external circuit 1512 of the first circuit portion 1510 can also be seen. When viewed along the −Z axis direction, the external circuit 1512 is at least partially exposed at the external interface 1112 of the top surface 1111 .

[0125] Figure 6 Display along Figure 1 A partial cross-sectional view of the optical element driving mechanism 1000 taken along the line AA'. Figure 6 As shown in FIG. 1 , the housing 1110 further includes a receiving space 1113 . The frame 1120 is disposed in the receiving space 1113 of the housing 1110 . The second support portion includes a frame surface 1122 - 1 . The frame surface 1122 - 1 faces the top surface 1111 of the housing 1110 .

[0126] According to some embodiments of the present invention, the frame 1120 may be made of materials such as resin. Figure 6 As shown in FIG. 1 , the first circuit portion 1510 has a plate-like structure. The first circuit portion 1510 is at least partially located between the housing 1110 and the frame 1120 . The first support portion 1121 of the frame 1120 directly contacts the top surface 1111 of the housing 1110 .

[0127] like Figure 6As shown in FIG. 1 , the first support portion 1121 of the frame 1120 protrudes from the frame surface 1122-1. The second support portion 1122 of the frame 1120 corresponds to the first circuit portion 1510. The shortest distance between the first support portion 1121 and the top surface 1111 is smaller than the shortest distance between the second support portion 1122 and the top surface 1111.

[0128] like Figure 6 As shown in FIG. 1 , since the first support portion 1121 passes through the opening 1511 ( Figure 4 ), so when viewed along a direction parallel to the frame surface 1122-1 (eg, the direction of the X-axis), the first circuit portion 1510 at least partially overlaps the first support portion 1121.

[0129] like Figure 6 As shown in FIG. 1 , since the first circuit portion 1510 is disposed on the second support portion 1122 , the first circuit portion 1510 does not overlap with the second support portion 1122 when viewed along a direction parallel to the frame surface 1122 - 1 (eg, the direction of the X-axis).

[0130] like Figure 6 As shown in , since the second support portion 1122 is designed to provide support when the first circuit portion 1510 is soldered, the shortest distance between the first circuit portion 1510 and the top surface 1111 is different from the shortest distance between the first circuit portion 1510 and the second support portion 1122. In detail, the shortest distance between the first circuit portion 1510 and the top surface 1111 is greater than the shortest distance between the first circuit portion 1510 and the second support portion 1122.

[0131] Please temporarily refer to Figure 1 as well as Figure 5 , when along the vertical Figure 6 When viewed from the direction of the frame surface 1122 - 1 (eg, the direction of −Z axis), the second support portion 1122 at least partially overlaps with the external interface 1112 of the housing 1110 .

[0132] Figure 7 The exploded schematic diagram of the first optical element 2000 corresponding to the opening 1530 of the first circuit member 1500 is shown. Figure 7 As shown in , the geometry of the first optical element 2000 corresponds to the geometry of the opening 1530 of the first circuit member 1500 .

[0133] like Figure 7As shown in FIG. 1 , when viewed along the main axis C (Z axis), the opening 1530 of the first circuit member 1500 and the first optical element 2000 both have polygonal structures. Specifically, the opening 1530 of the first circuit member 1500 and the first optical element 2000 are both quadrilateral structures in this embodiment.

[0134] Figure 8 A bottom view of an optical element driving mechanism 1000 according to some embodiments of the present invention is shown. Figure 7 As described in the above, since the geometric shape of the first optical element 2000 corresponds to the geometric shape of the opening 1530 of the first circuit component 1500, the geometric shape of the opening 1530 can be regarded as the first optical element 2000 ( Figure 7 )’s geometric shape.

[0135] like Figure 8 As shown in Figure 1 ) when observed, the geometric center C1 of the fixing portion 1100 does not overlap with the geometric center C2 of the opening 1530 of the first circuit member 1500. Figure 7 ) corresponds to the geometry of the opening 1530 of the first circuit member 1500, so it can be understood that when the opening 1530 is formed along the main axis C ( Figure 1 ) when observed, the geometric center of the fixing portion 1100 and the geometric center of the first optical element 2000 will not overlap.

[0136] like Figure 8 As shown in Figure 1 ) when observed, the geometric center of the fixed portion 1100 and the geometric center of the first movable portion 1200 are both approximately located at the position of the geometric center C1. Figure 1 ) when observed, the geometric center C2 of the opening 1530 does not overlap with the geometric center C1 of the first movable portion 1200.

[0137] Since the first optical element 2000 ( Figure 7 ) corresponds to the geometry of the opening 1530 of the first circuit member 1500, so it can be understood that when the opening 1530 is formed along the main axis C ( Figure 1 ) when observed, the geometric center C1 of the first movable portion 1200 and the geometric center of the first optical element 2000 do not overlap.

[0138] Fig. 9 For along Figure 1 A cross-sectional view of the optical element driving mechanism 1000 taken along line BB' in FIG. Fig. 9As shown in FIG. 1 , the opening 1530 includes a first boundary 1531 and a second boundary 1532 . When viewed along the main axis C (Z axis), the length of the first boundary 1531 is greater than the length of the second boundary 1532 .

[0139] like Fig. 9 As shown in FIG. 1 , when viewed along the main axis C (Z axis), the first boundary 1531 is adjacent to the first side 1101 of the fixing portion 1100 . When viewed along the main axis C, the second boundary 1532 is adjacent to the second side 1102 of the fixing portion 1100 .

[0140] like Fig. 9 As shown in FIG. 1 , when viewed along the main axis C (Z axis), the first coil 1412 and the second coil 1413 of the first driving unit 1410 are located at the first side 1101. When viewed along the main axis C, the second driving unit 1420 is located at the second side 1102. When viewed along the main axis C, the shortest distance between the first boundary 1531 and the first side 1101 is different from the shortest distance between the second boundary 1532 and the second side 1102.

[0141] like Fig. 9 As shown in , when viewed along the main axis C (Z axis), in the extension direction of the first side 1101 (direction of the X axis), the maximum size of the first coil 1412 is different from the maximum size of the second coil 1413. In detail, when viewed along the main axis C, in the extension direction of the first side 1101, the maximum size of the first coil 1412 is smaller than the maximum size of the second coil 1413.

[0142] like Fig. 9 As shown in FIG. 1 , when viewed along the main axis C (Z axis), the third coil 1422 is located at the second side 1102. When viewed along the main axis C, the shortest distance between the first coil 1412 and the third coil 1422 is different from the shortest distance between the second coil 1413 and the third coil 1422. When viewed along the main axis C, the shortest distance between the first coil 1412 and the third coil 1422 is greater than the shortest distance between the second coil 1413 and the third coil 1422.

[0143] like Fig. 9 As shown in FIG. 1 , when viewed along the main axis C, the first boundary 1531 is parallel to the first side 1101, and the second boundary 1532 is parallel to the second side 1102. When viewed along the main axis C, the shortest distance between the first boundary 1531 and the first side 1101 is greater than the shortest distance between the second boundary 1532 and the second side 1102.

[0144] Thus, the first coil 1412 and the second coil 1413 located on the same side will generate more heat at the first side edge 1101, but due to the distance between the first optical element 2000 and the second optical element 2000 on the Y axis, the heat generated by the first coil 1412 and the second coil 1413 on the same side will generate more heat at the first side edge 1101. Figure 7 ) is farther away, thereby reducing the first optical element 2000 ( Figure 7 ) and also contributes to the thermal influence of the first optical element 2000 ( Figure 7 ) for heat dissipation.

[0145] In addition, although the first coil 1412 and the second coil 1413 located on the same side will generate more interference on the first side edge 1101, due to the first optical element 2000 ( Figure 7 ) on the Y axis is larger, which effectively improves the signal interference problem.

[0146] Fig.10 A top view of a portion of an optical element drive mechanism 1000 according to some embodiments of the present invention is shown. When viewed along the major axis C (Z axis), the area of ​​the first magnetic element 1411 is different from the area of ​​the second magnetic element 1421. When viewed along the major axis C, the area of ​​the first magnetic element 1411 is greater than the area of ​​the second magnetic element 1421.

[0147] Fig.11 For along Figure 1 A cross-sectional view of the optical element driving mechanism 1000 taken along the line CC' in FIG. Fig.11 As shown in FIG. 1 , the intermediate element 1811 may be a ball. The force-applying element 1812 may be a magnetic element made of a magnetic material (e.g., an alloy including elements such as iron and nickel). The force-applying element 1812 corresponds to the second magnetic element 1421 to generate a first stabilizing force. The force-applying element 1812 is used to apply the first stabilizing force to the first movable portion 1200 so that the intermediate element 1811 contacts the corresponding element 1813.

[0148] like Fig.11 As shown in FIG. 1 , the second magnetic element 1421 includes a first magnetic portion 1421-1 and a second magnetic portion 1421-2. The corresponding element 1813 is disposed on the first magnetic portion 1421-1. When the magnetic portion 1421-2 is parallel to the main axis C( Figure 1 ) or Y-axis, the corresponding element 1813 is located between the first magnetic portion 1421-1 and the second magnetic portion 1421-2.

[0149] According to some embodiments of the present invention, since a non-magnetic region is required between the first magnetic portion 1421-1 and the second magnetic portion 1421-2, a corresponding element 1813 is provided between the first magnetic portion 1421-1 and the second magnetic portion 1421-2. The corresponding element 1813 may be made of a metal material. The corresponding element 1813 corresponds to the intermediate element 1811. The corresponding element 1813 may move relative to the intermediate element 1811.

[0150] In addition, since the first magnetic portion 1421 - 1 and the second magnetic portion 1421 - 2 are too long and may be easily broken, the overall structure of the second magnetic element 1421 can be strengthened by disposing the corresponding element 1813 between the first magnetic portion 1421 - 1 and the second magnetic portion 1421 - 2 .

[0151] like Fig.11 As shown in FIG. 1 , the third coil 1422 is located between the force-applying element 1812 and the second magnetic element 1421. When viewed along the main axis C (Z axis), the intermediate element 1811 at least partially overlaps the space surrounded by the third coil 1422. When viewed along a direction perpendicular to the main axis (e.g., X axis), the intermediate element 1811 at least partially overlaps the third coil 1422. Fig.11 As shown in FIG. 1 , the corresponding element 1813 includes a corresponding surface 1813 - 1 . The corresponding surface 1813 - 1 faces toward the middle element 1811 .

[0152] Fig. 12A A schematic side view of the second driving unit 1420 and the corresponding element 1813 according to one embodiment of the present invention is shown. Fig. 12A As shown in FIG. 1 , the magnetic pole arrangement direction of the first magnetic portion 1421 - 1 is opposite to the magnetic pole arrangement direction of the second magnetic portion 1421 - 2 . It should be understood that the magnetic pole arrangement direction described herein is defined as the direction from the S pole to the N pole.

[0153] like Fig. 12A As shown in FIG. 1 , the magnetic pole arrangement direction of the corresponding surface 1813-1 is not parallel to that of the first magnetic portion 1421-1. Fig.11 Although not clearly shown, it should be understood that in the magnetic pole arrangement direction of the first magnetic portion 1421-1, the maximum size of the first magnetic portion 1421-1 is different from the maximum size of the corresponding element 1813. Fig. 12A As shown in FIG. 1 , in the magnetic pole arrangement direction of the first magnetic portion 1421 - 1 , the maximum dimension of the first magnetic portion 1421 - 1 is greater than the maximum dimension of the corresponding element 1813 .

[0154] Fig. 12B A schematic side view of a second driving unit 1420A and a corresponding element 1813A according to another embodiment of the present invention is shown. Fig. 12B As shown in FIG. 1 , the first magnetic portion 1421 - 1A includes a first magnetic surface 1421 - 11A and a second magnetic surface 1421 - 12A. The first magnetic surface 1421 - 11A faces toward the third coil 1422A, while the second magnetic surface 1421 - 12A faces in the opposite direction to the first magnetic surface 1421 - 11A.

[0155] like Fig. 12BAs shown in FIG. 1 , the second magnetic portion 1421-2A includes a third magnetic surface 1421-21A and a fourth magnetic surface 1421-22A. The third magnetic surface 1421-21A faces toward the third coil 1422A, and the fourth magnetic surface 1421-22A faces in opposite directions to the third magnetic surface 1421-21A.

[0156] exist Fig. 12B In the embodiment shown, the shortest distance D1 between the first magnetic surface 1421-11A and the third magnetic surface 1421-21A is different from the shortest distance D2 between the second magnetic surface 1421-12A and the fourth magnetic surface 1421-22A. Specifically, the shortest distance D1 between the first magnetic surface 1421-11A and the third magnetic surface 1421-21A is smaller than the shortest distance D2 between the second magnetic surface 1421-12A and the fourth magnetic surface 1421-22A.

[0157] Fig.13 A block diagram of an optical element driving mechanism 1000 according to some embodiments of the present invention is shown. Fig.13 As shown in FIG. 1 , the first movable part 1200 is connected to the first optical element 2000 . The second movable part 1300 is connected to the second optical element 3000 , and an optical module 4000 as an aperture module is disposed on the second movable part 1300 to control the amount of light entering the optical element driving mechanism 1000 .

[0158] Please refer to the back Figure 1 .exist Figure 1 In the embodiment shown, the optical element driving mechanism 1000 further includes a third circuit component (not shown), which is used to communicate with the optical module 4000 ( Fig.13 ) is electrically connected. In this embodiment, the optical module 4000 is electrically connected to the external circuit 1512 of the first circuit portion 1510 through the external interface 1112 from above the housing 1110 via the third circuit component. Therefore, it can be understood that when observed along the direction perpendicular to the main axis C (for example, the X-axis or the Y-axis), the top surface 1111 of the housing 1110 will be at least partially located between the first circuit portion 1510 and the aforementioned third circuit component.

[0159] Fig.14 FIG. 1 is a perspective view of an optical element driving mechanism 1000B according to another embodiment of the present invention. Fig.14 In the embodiment shown, the third support element 1830B will serve as a third circuit member for interfacing with the optical module 4000 ( Fig.13 )Electrical connection. Fig.14As shown in FIG. 1 , when viewed along a direction perpendicular to the principal axis (eg, the X-axis or the Y-axis), the third support assembly 1830B (third circuit member) is at least partially located between the first circuit portion 1510B and the frame 1120B.

[0160] In summary, the driving component of the present invention is asymmetrically arranged, and the photosensitive element is arranged in an eccentric manner relative to the fixed part. Such a design enables the driving component of the present invention to move the movable part relative to the fixed part with a larger driving force, wherein the two coils (first coil and second coil) of the first driving part are located on the same side and will generate more heat, but because they are farther away from the eccentric photosensitive element, the thermal impact on the photosensitive element is reduced, and the heat dissipation of the photosensitive element is also facilitated. Moreover, although more signal interference will be generated between the two coils due to the electromagnetic field, the signal interference problem is effectively improved due to the large distance between them and the photosensitive element. In addition, the eccentric design of the photosensitive element enables more efficient use of the internal space of electronic devices such as mobile phones, thereby increasing the screen-to-body ratio, making the display area of ​​the mobile phone larger and bringing better visual effects.

[0161] Although the embodiments and advantages of the present invention have been disclosed above, it should be understood that any person skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the present invention. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present invention also includes the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, characterized in that: include: A first movable portion, used to connect a first optical element; A fixed portion having a main shaft, wherein the first movable portion can move relative to the fixed portion; as well as A first driving component is used to drive the first movable part to move relative to the fixed part.

2. The optical element driving mechanism according to claim 1, wherein: When observed along the main axis, the geometric center of the fixed part does not overlap with the geometric center of the first optical element; when observed along the main axis, the first optical element has a polygonal structure; when observed along the main axis, the geometric center of the first movable part does not overlap with the geometric center of the first optical element.

3. The optical element driving mechanism according to claim 2, wherein: Also includes a first circuit component, the first circuit component includes an opening, the opening corresponds to the first optical element, the fixing portion has a first side edge and a second side edge; Wherein, when observed along the main axis, the opening has a polygonal structure, and the geometric center of the opening does not overlap with the geometric center of the first movable portion; Wherein, when viewed along the main axis, the opening includes a first boundary and a second boundary, and the length of the first boundary is greater than the length of the second boundary; wherein, when viewed along the main axis, the first boundary is adjacent to the first side edge of the fixing portion; When viewed along the main axis, the second boundary is adjacent to the second side edge of the fixing portion.

4. The optical element driving mechanism according to claim 3, wherein: The first driving assembly includes a first driving portion and a second driving portion, when viewed along the main axis, the first driving portion is located at the first side; when viewed along the main axis, the second driving portion is located at the second side; when viewed along the main axis, the shortest distance between the first boundary and the first side is different from the shortest distance between the second boundary and the second side; when viewed along the main axis, the first boundary and the first side are parallel to each other, and the second boundary and the second side are parallel to each other; when viewed along the main axis, the shortest distance between the first boundary and the first side is greater than the shortest distance between the second boundary and the second side; Wherein, the first driving unit includes a first magnetic element, a first coil and a second coil, and the second driving unit includes a second magnetic element and a third coil. When observed along the main axis, the area of ​​the first magnetic element is different from the area of ​​the second magnetic element; when observed along the main axis, the area of ​​the first magnetic element is greater than the area of ​​the second magnetic element; when observed along the main axis, the first coil and the second coil are located on the first side; when observed along the main axis, in the extension direction of the first side, the maximum size of the first coil is different from the maximum size of the second coil; when observed along the main axis, in the extension direction of the first side, the maximum size of the first coil is smaller than the maximum size of the second coil; when observed along the main axis, the third coil is located on the second side; when observed along the main axis, the shortest distance between the first coil and the third coil is different from the shortest distance between the second coil and the third coil; when observed along the main axis, the shortest distance between the first coil and the third coil is greater than the shortest distance between the second coil and the third coil.

5. The optical element driving mechanism according to claim 4, characterized in that: The first movable part can move relative to the fixed part via the first supporting assembly, and the first supporting assembly includes: an intermediate element; a corresponding element, corresponding to the intermediate element and movable relative to the intermediate element; and a force-applying element, used for applying a first stabilizing force to the first movable portion to make the intermediate element contact the corresponding element; Wherein, the force-applying element corresponds to the second magnetic element to generate the first stabilizing force, the force-applying element has a magnetically conductive material, and the third coil is located between the force-applying element and the second magnetic element; when observed along the main axis, the intermediate element at least partially overlaps with the space surrounded by the third coil; when observed along a direction perpendicular to the main axis, the intermediate element and the third coil at least partially overlap.

6. The optical element driving mechanism according to claim 5, characterized in that: The second magnetic element includes a first magnetic part and a second magnetic part, and the corresponding element is arranged on the first magnetic part; the corresponding element has a metal material; when observed along the main axis, the corresponding element is located between the first magnetic part and the second magnetic part; the magnetic pole arrangement direction of the first magnetic part is opposite to the magnetic pole arrangement direction of the second magnetic part; a corresponding surface of the corresponding element faces the intermediate element, and the corresponding surface is not parallel to the magnetic pole arrangement direction of the first magnetic part; in the magnetic pole arrangement direction of the first magnetic part, the maximum size of the first magnetic part is different from the maximum size of the corresponding element.

7. The optical element driving mechanism according to claim 6, wherein: In the magnetic pole arrangement direction of the first magnetic portion, the maximum dimension of the first magnetic portion is greater than the maximum dimension of the corresponding element; The first magnetic portion includes a first magnetic surface and a second magnetic surface, the first magnetic surface faces the third coil, and the second magnetic surface faces in the opposite direction to the first magnetic surface; The second magnetic portion includes a third magnetic surface and a fourth magnetic surface, the third magnetic surface faces the third coil, and the fourth magnetic surface faces in the opposite direction to the third magnetic surface; The shortest distance between the first magnetic surface and the third magnetic surface is different from the shortest distance between the second magnetic surface and the fourth magnetic surface, and the shortest distance between the first magnetic surface and the third magnetic surface is smaller than the shortest distance between the second magnetic surface and the fourth magnetic surface.

8. The optical element driving mechanism according to claim 1, wherein: The device further comprises a first circuit member, the first circuit member being used for electrically connecting an external circuit, the first circuit member comprising a first circuit portion, the first circuit portion comprising an external circuit, wherein the fixing portion comprises: A housing having a top surface and a receiving space, wherein the top surface includes a pair of external interfaces and is made of metal; and A frame is disposed in the accommodating space of the housing, the frame comprising a frame surface, a first supporting portion and a second supporting portion; Wherein, the first circuit portion is at least partially located between the shell and the frame, the external circuit is at least partially exposed to the external interface of the top surface, the first circuit portion has a plate-like structure, the frame has a resin material, the frame surface of the frame faces the top surface of the shell, the first support portion of the frame directly contacts the top surface, the first support portion protrudes from the frame surface, the second support portion of the frame corresponds to the first circuit portion, and the shortest distance between the first support portion and the top surface is less than the shortest distance between the second support portion and the top surface; when observed along a direction parallel to the frame surface, the first circuit portion and the first support portion at least partially overlap; when observed along a direction parallel to the frame surface, the first circuit portion and the second support portion do not overlap; when observed along a direction perpendicular to the frame surface, the second support portion and the external interface at least partially overlap; the shortest distance between the first circuit portion and the top surface is different from the shortest distance between the first circuit portion and the second support portion; the shortest distance between the first circuit portion and the top surface is greater than the shortest distance between the first circuit portion and the second support portion.

9. The optical element driving mechanism according to claim 8, wherein: It also includes a second movable part, a second circuit component and a third circuit component. The second circuit component is arranged on the second movable part, the third circuit component is movably connected to the frame and the second movable part, the third circuit component is used to electrically connect to an optical module, and the third circuit component is at least partially located between the first circuit part and the frame.

10. The optical element driving mechanism according to claim 8, wherein: It also includes a second movable part, a second circuit component and a third circuit component. The second circuit component is arranged on the second movable part. The third circuit component is used to electrically connect with an optical module. The top surface is at least partially located between the first circuit part and the third circuit component.

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