Optical element driving mechanism

Abstract

The invention 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 relative to the fixed part.

Description

Technical Field

[0001] The present invention relates to an optical element driving mechanism, and more specifically, to an optical element driving mechanism for driving an optical element to move. Background Art

[0002] With the development of technology, many electronic devices (such as tablet computers and 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 thinner designs to provide users with more choices. Summary of the invention

[0003] An object of the present invention is to provide an optical element driving mechanism to solve at least one of the above problems.

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

[0005] In some embodiments, when viewed along a main axis, the fixing portion includes a polygonal profile, and the polygonal profile includes a first side and a second side, the first side extends along a first axial direction, and the second side extends along a second axial direction. The first axial direction and the second axial direction are not parallel. The maximum dimension of the first side in the first axial direction is different from the maximum dimension of the second side in the second axial direction. The drive assembly is located on the first side.

[0006] In some embodiments, the aforementioned driving component includes a coil, a first magnetic element, and a second magnetic element. The first magnetic element corresponds to the coil, and the second magnetic element is adjacent to the first magnetic element. The first magnetic element has a first surface and a second surface, the first surface faces the coil and is perpendicular to a third axis, and the second surface faces the second magnetic element and is perpendicular to a fourth axis. The second magnetic element has a third surface, the third surface faces the first magnetic element and is perpendicular to the fourth axis. When viewed along the fourth axis, at least part of the second surface does not overlap with the third surface.

[0007] In some embodiments, the second magnetic element further has a fourth surface and a fifth surface, the fourth surface and the fifth surface are parallel to the fourth axis, the fourth surface is not parallel to the fifth surface, and the fourth surface is not perpendicular to the fifth surface.

[0008] In some embodiments, when viewed along the fourth axis, the first magnetic element has a strip-shaped structure, and in the long axis direction of the strip-shaped structure, the maximum size of the first magnetic element is different from the maximum size of the second magnetic element.

[0009] In some embodiments, the fixing portion includes an outer frame, the outer frame has a top wall, and the distance between the second magnetic element and the top wall is smaller than the distance between the first magnetic element and the top wall. A first recessed portion is formed on the top wall, and when viewed along the fourth axial direction, the first recessed portion does not overlap with the second magnetic element. When viewed along the fourth axial direction, the first recessed portion overlaps with the first magnetic element.

[0010] In some embodiments, the outer frame further includes a second recessed portion corresponding to the second magnetic element. When viewed along the main axis, the second recessed portion is located at the first side, the second recessed portion overlaps the second magnetic element, the first recessed portion is located at a corner of the fixing portion, the first recessed portion is located at the first side, and the first recessed portion is adjacent to the second recessed portion. The first recessed portion has a first recessed surface, the first recessed surface faces the first magnetic element, and there is a gap greater than zero between the first recessed surface and the first magnetic element.

[0011] In some embodiments, the outer frame has a side wall connected to the top wall, and the optical element driving mechanism further includes a connecting element, and the first magnetic element is connected to the side wall via the connecting element. The second recessed portion has a second recessed surface, the second recessed surface faces the second magnetic element, and the connecting element directly contacts the second recessed surface. The first recessed surface is connected to the side wall. The second magnetic element is connected to the side wall via the connecting element.

[0012] In some embodiments, when viewed along the fourth axis, the maximum dimension of the first magnetic element along the third axis is the same as the maximum dimension of the second magnetic element along the third axis, and both the first magnetic element and the second magnetic element are disposed on the first side.

[0013] In some embodiments, the aforementioned optical element driving mechanism further includes a shock-absorbing component for suppressing vibration of the movable part, and the shock-absorbing component includes a first setting part and a shock-absorbing element. The first setting part is located on the movable part, wherein when observed along a fifth axial direction, the first setting part extends along an extension direction and protrudes from the movable part. The shock-absorbing element is disposed on a first side surface of the first setting part. When observed along the fifth axial direction, the first side surface is not perpendicular to the extension direction. The first setting part further includes a second side surface, which is adjacent to the first side surface and is not parallel to the first side surface. The first setting part further includes a third side surface, which is adjacent to the second side surface and is not parallel to the second side surface. When observed along the fifth axial direction, the first side surface and the third side surface are respectively located on opposite sides of the first setting part. The shock-absorbing element does not contact the third side surface. The first side surface and the third side surface are parallel to each other.

[0014] In some embodiments, the aforementioned shock-absorbing assembly further includes a second setting portion, which is located on the fixing portion and has a fourth side surface, and the shock-absorbing element directly contacts the fourth side surface. The fourth side surface faces the first side surface. The first setting portion and the second setting portion can move relative to each other. When observed along the fifth axial direction, the fourth side surface is not perpendicular to the extension direction. The second setting portion further includes a fifth side surface, and when observed along the fifth axial direction, the fourth side surface and the fifth side surface are located on opposite sides of the second setting portion.

[0015] In some embodiments, the third axis is parallel to the second axis.

[0016] In some embodiments, the optical element driving mechanism further includes an elastic element, and the elastic element includes a movable portion fixed section, a fixed portion fixed section, and a string segment. The movable portion fixed section is fixed to the movable portion. The fixed portion fixed section is fixed to the fixed portion. The string segment connects the movable portion fixed section and the fixed portion fixed section, wherein the fixed portion fixed section is located at the second side.

[0017] In some embodiments, the aforementioned fixed part includes an outer frame and a base, the outer frame includes a side wall, the base includes a side column, and the side wall and the side column are connected to each other, wherein the movable part includes a winding column, the end of the coil is wound on the winding column, an opening is formed on the side column, and the winding column is accommodated in the opening.

[0018] In some embodiments, the aforementioned fixing portion includes a base, the base includes a bottom plate and a side column, the side column is connected to the bottom plate, and a through hole is formed on the side column, wherein the optical element driving mechanism also includes a sensor accommodated in the through hole.

[0019] In some embodiments, the aforementioned fixed part includes a base, the base includes a bottom plate and a side column, the side column is connected to the bottom plate, and a recessed structure is formed on the surface of the side column facing away from the movable part, wherein the optical element driving mechanism also includes a sensor, which is arranged on the side column and located in the recessed structure.

[0020] In some embodiments, the aforementioned fixing portion includes a base, the base includes a bottom plate and a side column, the side column is connected to the bottom plate, and a hole is formed on the bottom plate, wherein the optical element driving mechanism also includes a sensor accommodated in the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 4 is a schematic diagram of an electronic device having an optical element driving mechanism according to an embodiment of the present invention.

[0022] Figure 2 is a schematic diagram of an optical element driving mechanism in an embodiment of the present invention.

[0023] Figure 3 FIG. 4 is an exploded view of an optical element driving mechanism in an embodiment of the present invention.

[0024] Figure 4A is a schematic diagram of an elastic element in an embodiment of the present invention.

[0025] Figure 4B FIG. 4 is a schematic diagram of another elastic element according to an embodiment of the present invention.

[0026] Figure 5 for Figure 2 Cross-sectional view along the AA direction.

[0027] Figure 6 for Figure 2 Cross-sectional view along direction BB.

[0028] Figure 7 for Figure 2 Cross-sectional view along CC direction.

[0029] Figure 8 It is a schematic diagram of a base and a sensing component in another embodiment of the present invention.

[0030] Fig. 9 It is a schematic diagram of a base and a sensing component in another embodiment of the present invention.

[0031] The reference numerals are as follows:

[0032] 10: Optical element drive mechanism

[0033] 20: Electronic devices

[0034] 30: Optical components

[0035] 100:Fixed part

[0036] 101: First side

[0037] 102: Second side

[0038] 110: Outer frame

[0039] 111: Top wall

[0040] 112: Side wall

[0041] 120: Base

[0042] 121: Bottom plate

[0043] 122: Side column

[0044] 123: Opening

[0045] 124:Piercing

[0046] 125: Depression structure

[0047] 126: Holes

[0048] 200: Activities Department

[0049] 210: Winding column

[0050] 300: Elastic element

[0051] 310: fixed section of movable part

[0052] 320: fixed part fixed section

[0053] 330: String segment

[0054] 400: Elastic element

[0055] 410: fixed section of movable part

[0056] 420: fixed part fixed section

[0057] 430: String segment

[0058] 500: drive components

[0059] 510: first magnetic element

[0060] 511: first surface

[0061] 512: Second surface

[0062] 520: second magnetic element

[0063] 521: Third surface

[0064] 522: Fourth Surface

[0065] 523: Fifth Surface

[0066] 530: Coil

[0067] 600:Sensing component

[0068] 610: Circuit board

[0069] 620: Sensor

[0070] 630: Sensing Objects

[0071] 700: Connecting element

[0072] 800:Shock absorber

[0073] 810: First setting unit

[0074] 811: First side

[0075] 812: Second side

[0076] 813: The third side

[0077] 820: Second setting unit

[0078] 821: The fourth side

[0079] 822: Fifth side

[0080] 830:Shock control components

[0081] 900: Connecting element

[0082] AX: spindle

[0083] D1: The maximum dimension of the first side in the first axial direction

[0084] D2: The maximum dimension of the second side in the second axis direction

[0085] P1: first recessed portion

[0086] P11: First concave surface

[0087] P2: Second recessed portion

[0088] P21: Second concave surface

[0089] R1: First axis

[0090] R2: Second axis

[0091] R3: The third axis

[0092] R4: The fourth axis

[0093] R5: The fifth axis DETAILED DESCRIPTION

[0094] The optical element driving mechanism of the embodiment of the present invention is described below. However, it can be easily understood that the embodiment of the present invention provides many suitable inventive concepts and can be implemented in a wide variety of specific contexts. The specific embodiments disclosed are only used to illustrate the use of the present invention in a specific way, and are not intended to limit the scope of the present invention.

[0095] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0096] First see Figure 1The optical element driving mechanism 10 of one embodiment of the present invention can be installed in an electronic device 20, and is used to carry and drive an optical element 30, so that the optical element 30 can move relative to a photosensitive element (not shown) in the electronic device 20, thereby achieving the purpose of focusing, zooming and / or optical image stabilization (OIS). The electronic device 20 can be, for example, a smart phone, a tablet computer, or a digital camera, and the optical element 30 can be, for example, a lens having multiple lenses, but is not limited thereto.

[0097] Figure 2 is a schematic diagram of the aforementioned optical element driving mechanism 10, and Figure 3 FIG. 1 is an exploded view of the aforementioned optical element driving mechanism 10. Figure 2 and Figure 3 As shown, the optical element driving mechanism 10 may mainly include a fixed portion 100 , a movable portion 200 , an elastic element 300 , an elastic element 400 , a driving component 500 and a sensing component 600 .

[0098] The fixed part 100 may include an outer frame 110 and a base 120, which may be joined to form a hollow box. The movable part 200, the elastic element 300, the elastic element 400, the driving component 500 and the sensing component 600 may be accommodated in the hollow box to protect the aforementioned components.

[0099] When observed from the main axis AX of the optical element driving mechanism 10 (i.e., the optical axis of the optical element 30), the fixing portion 100 may generally have a polygonal profile (e.g., a rectangular profile), and the polygonal profile may have a first side 101 and a second side 102. The first side 101 extends along the first axial direction R1, and the second side 102 extends along the second axial direction R2. The first axial direction R1 and the second axial direction R2 are not parallel, and the maximum dimension D1 of the first side 101 in the first axial direction R1 is different from the maximum dimension D2 of the second side 102 in the second axial direction R2. In the present embodiment, the first axial direction R1 and the second axial direction R2 are perpendicular to each other, and the maximum dimension D1 of the first side 101 in the first axial direction R1 is smaller than the maximum dimension D2 of the second side 102 in the second axial direction R2.

[0100] The outer frame 110 of the fixing portion 100 includes a top wall 111 and a plurality of side walls 112, wherein the side walls 112 may be connected to the top wall 111 and extend toward the base 120. At least one first recessed portion P1 and at least one second recessed portion P2 may be formed on the top wall 111. The first recessed portion P1 and the second recessed portion P2 may be adjacent to each other and both located at the first side 101, wherein when viewed along the main axis AX, the first recessed portion P1 may be located at a corner of the polygonal outline, and the second recessed portion P2 may be located between the corners of the polygonal outline.

[0101] The base 120 of the fixing part 100 includes a bottom plate 121 and a plurality of side pillars 122, and the side pillars 122 may be connected to the bottom plate 121 and extend toward the top wall 111 of the outer frame 110. When assembling the fixing part 100, the user may use an adhesive element (such as glue or tape) to stick the side wall 112 and the side pillars 122, so that the outer frame 110 and the base 120 are fixed to each other.

[0102] The movable part 200 can be used to connect the optical element 30, and can be movably connected to the fixed part 100. In detail, the movable part 200 can be suspended in the hollow box body through the elastic element 300 and the elastic element 400.

[0103] like Figure 4A As shown, the elastic element 300 may include at least one movable portion fixing section 310, at least one fixed portion fixing section 320, and at least one string section 330. The movable portion fixing section 310 may be fixed to the upper surface of the movable portion 200, the fixed portion fixing section 320 may be fixed to the fixed portion 100 (for example, fixed to the side column 122), and the string section 330 may be disposed between the movable portion fixing section 310 and the fixed portion fixing section 320 to connect the two.

[0104] like Figure 4B As shown, similarly, the elastic element 400 may include at least one movable portion fixing section 410, at least one fixed portion fixing section 420, and at least one string segment 430. The movable portion fixing section 410 may be fixed to the lower surface of the movable portion 200, the fixed portion fixing section 420 may be fixed to the fixed portion 100 (for example, fixed to the bottom plate 121), and the string segment 430 may be disposed between the movable portion fixing section 410 and the fixed portion fixing section 420 to connect the two.

[0105] In particular, in this embodiment, the fixing section 320 of the fixing portion of the elastic element 300 and the fixing section 420 of the fixing portion of the elastic element 400 are located on the second side 102 (i.e., the long side of the optical element driving mechanism 10), and are not arranged on the first side 101 (i.e., the short side of the optical element driving mechanism 10).

[0106] Figure 5 for Figure 2 A cross-sectional view along the AA direction in FIG. Figure 6 for Figure 2 The cross-sectional view along the BB direction. Figure 2-Figure 3 , Figure 5-6 As shown, the driving assembly 500 may include at least one first magnetic element 510 , at least one second magnetic element 520 , and at least one coil 530 .

[0107] The first magnetic element 510 and the second magnetic element 520 are stacked and arranged at the first side 101 along the main axis AX, and the coil 530 is arranged on the movable part 200, and the positions of the first magnetic element 510 and the second magnetic element 520 and the position of the coil 530 correspond to each other. The first magnetic element 510 has a substantially rectangular parallelepiped structure, and may include a first surface 511 and a second surface 512, wherein the first surface 511 faces the coil 530 and is perpendicular to a third axial direction R3, and the second surface 512 faces the second magnetic element 520 and is perpendicular to a fourth axial direction R4. In the present embodiment, the first surface 511 and the second surface 512 are connected to each other and are perpendicular to each other, so the third axial direction R3 may be perpendicular to the fourth axial direction R4. In addition, in the present embodiment, the fourth axial direction R4 is more parallel to the main axis AX of the optical element driving mechanism 10.

[0108] like Figure 5 As shown, the first recessed portion P1 of the fixing portion 100 may have a first recessed surface P11 connected to the side wall 112 and facing the first magnetic element 510. When the first magnetic element 510 is disposed in the hollow box body of the fixing portion 100, the first recessed surface P11 may overlap with the first magnetic element 510 when viewed along the fourth axial direction R4. It should be noted that the first recessed surface P11 does not contact the first magnetic element 510. In other words, there may be a gap greater than zero between the first recessed surface P11 and the first magnetic element 510.

[0109] The second magnetic element 520 is adjacent to the first magnetic element 510 and is disposed between the first magnetic element 510 and the top wall 111 of the outer frame 110, so that the distance between the second magnetic element 520 and the top wall 111 is smaller than the distance between the first magnetic element 510 and the top wall 111. The shape of the second magnetic element 520 can match the first recessed portion P1, so when observed along the fourth axial direction R4, the first recessed portion P1 and the second magnetic element 520 will not overlap.

[0110] The second magnetic element 520 may include a third surface 521, a fourth surface 522, and a fifth surface 523. The third surface 521 faces the first magnetic element 510 and is perpendicular to the fourth axial direction R4, and the fourth surface 522 and the fifth surface 523 are connected and parallel to the fourth axial direction R4. In particular, an obtuse angle may be formed between the fourth surface 522 and the fifth surface 523, so that the fourth surface 522 is not parallel and not perpendicular to the fifth surface 523.

[0111] In this embodiment, when viewed along the fourth axis R4, the first magnetic element 510 generally has a long strip structure, the second magnetic element 520 generally has a trapezoidal structure, and in the long axis direction of the long strip structure of the first magnetic element 510, the maximum size of the first magnetic element 510 is greater than the maximum size of the second magnetic element 520. Therefore, at least a portion of the second surface 512 will not overlap with the third surface 521.

[0112] The position of the second recessed portion P2 may correspond to the position of the second magnetic element 520 , so when viewed along the fourth axis R4 , the second recessed portion P2 will overlap with the second magnetic element 520 .

[0113] When the user installs the first magnetic element 510 and the second magnetic element 520 on the fixing portion 100, the connecting element can be used to fix them. For example, the connecting element 700 can be disposed between the first magnetic element 510 and the side wall 112 of the outer frame 110 and between the second magnetic element 520 and the side wall 112 of the outer frame 110, and contact the first magnetic element 510, the second magnetic element 520 and the side wall 112 to fix the first magnetic element 510 and the second magnetic element 520 on the side wall 112. In this embodiment, the connecting element 700 can further extend between the second magnetic element 520 and the second recessed surface P21 of the second recessed portion P2 (the second recessed surface P21 is the surface of the second recessed portion P2 facing the second magnetic element 520), and contact the second magnetic element 520 and the second recessed surface P21, so that the first magnetic element 510 and the second magnetic element 520 are more firmly fixed on the outer frame 110.

[0114] In this embodiment, the first magnetic element 510 can be further fixed on the base 120 of the fixing portion 100 via the connecting element 900. The connecting element 900 can be disposed on the side of the first magnetic element 510 and in contact with the first magnetic element 510 and the base 120.

[0115] The connecting element 700 and the connecting element 900 may be adhesive or tape, but are not limited thereto. For example, in this embodiment, the connecting element 700 may be a heat-hardening colloid, and the connecting element 900 may be a heat-hardening and light-hardening colloid.

[0116] When current flows into the coil 530, the electromagnetic action between the coil 530 and the first magnetic element 510 and the electromagnetic action between the coil 530 and the second magnetic element 520 can provide driving force to the movable part 200, so that the movable part 200 and the optical element 30 disposed thereon move along the main axis AX relative to the fixed part 100, thereby achieving the purpose of zooming and / or focusing.

[0117] like Figure 6As shown, in this embodiment, when observed along the fourth axial direction R4, the maximum dimension of the first magnetic element 510 on the third axial direction R3 is substantially the same as the maximum dimension of the second magnetic element 520 on the third axial direction R3, so that the driving component 500 can provide a uniform driving force to the movable part 200. The magnetic pole of the sixth surface 524 of the second magnetic element 520 facing the coil 530 can be opposite to the magnetic pole of the first surface 511 of the first magnetic element 510, so that the driving force of the driving component 500 can be enhanced.

[0118] Figure 7 for Figure 2 The cross-sectional view along the CC direction. Figure 7 As shown, in this embodiment, the end of the coil 530 can be wound around the winding post 210 of the movable part 200, and an opening 123 corresponding to the aforementioned winding post 210 can be formed on the side post 122 of the base 120, and the winding post 210 can be accommodated in this opening 123, so as to facilitate the miniaturization of the optical element driving mechanism 10.

[0119] In addition, if Figure 7 As shown, in this embodiment, the optical element driving mechanism 10 may further include a vibration damping assembly 800. The vibration damping assembly 800 may include at least one first setting portion 810, at least one second setting portion 820 and at least one vibration damping element 830.

[0120] The first setting portion 810 is connected to the movable portion 200, and when observed along the fifth axial direction R5, the first setting portion 810 extends along an extension direction (the X-axis direction in the figure) and protrudes from the aforementioned movable portion 200, and the first setting portion 810 has a first side surface 811, a second side surface 812, and a third side surface 813. The first side surface 811 is not perpendicular to the aforementioned extension direction, the second side surface 812 is adjacent to the first side surface 811 and is not parallel to the first side surface 811, and the third side surface 813 is adjacent to the second side surface 812 and is not parallel to the second side surface 812. When observed along the fifth axial direction R5, the first side surface 811 and the third side surface 813 are respectively located on opposite sides of the first setting portion 810, and the first side surface 811 and the third side surface 813 are parallel to each other. The first setting portion 810 and the movable portion 200 can be integrally formed, but are not limited thereto.

[0121] The second setting portion 820 is connected to the base 120 and has a fourth side surface 821 and a fifth side surface 822. The fourth side surface 821 faces the first side surface 811, and when observed along the fifth axial direction R5, the fourth side surface 821 is not perpendicular to the extension direction of the first setting portion 810, and the fourth side surface 821 and the fifth side surface 822 are respectively located on the opposite sides of the second setting portion 820. Since the first setting portion 810 and the second setting portion 820 are respectively arranged on the movable portion 200 and the fixed portion 100, when the movable portion 200 moves relative to the fixed portion 100, the first setting portion 810 will also move relative to the second setting portion 820. The second setting portion 820 and the base 120 of the fixed portion 100 can be integrally formed, but are not limited thereto.

[0122] The vibration-absorbing element 830 is disposed between the first setting portion 810 and the second setting portion 820 and contacts the first side surface 811 of the first setting portion 810 and the fourth side surface 821 of the second setting portion 820. For example, the vibration-absorbing element 830 may include gel, so that the vibration-absorbing element 830 can reduce the vibration generated when the movable portion 200 moves relative to the fixed portion 100. In this embodiment, the vibration-absorbing element 830 will not contact the second side surface 812, the third side surface 813 and the fifth side surface 822 to avoid affecting the movement of the movable portion 200.

[0123] See also Figure 3 and Figure 7 , the sensing component 600 may include a circuit board 610, a sensor 620 and a sensing object 630. The circuit board 610 is disposed on the side column 122 of the base 120, the sensor 620 is disposed on the circuit board 610, and the sensing object 630 is disposed on the movable part 200 and corresponds to the aforementioned sensor 620. The sensor 620 can sense the movement of the sensing object 630, and thus obtain the displacement of the movable part 200 relative to the fixed part 100.

[0124] For example, the sensor 620 may be a Hall effect 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, and the sensing object 630 may be a magnet, but is not limited thereto.

[0125] In this embodiment, a through hole 124 may be formed on the side pillar 122, and the sensor 620 may be accommodated in the through hole 124. This may facilitate miniaturization of the optical element driving mechanism 10 and improve the sensing accuracy of the sensing assembly 600.

[0126] See also Figure 8 In another embodiment of the present invention, the sensing component 600 may omit the circuit board 610, and a recessed structure 125 may be formed on the surface of the side column 122 facing away from the movable part 200. The sensor 620 may be accommodated in the recessed structure 125, and may be fixed to the side column 122 by a suitable method (for example, by surface-mount technology (SMT)) and electrically connected to the circuit embedded in the base 120. In this way, the optical element driving mechanism 10 may be further miniaturized.

[0127] See also Fig. 9 In another embodiment of the present invention, the circuit board 610 may be omitted from the sensing component 600, and a hole 126 may be formed on the bottom plate 121 of the fixing portion 100. The sensor 620 may be accommodated in the hole 126, and may be fixed on the bottom plate 121 by a suitable method (for example, by surface mounting technology) and electrically connected to the circuit embedded in the base 120. Thus, the optical element driving mechanism 10 may be further miniaturized.

[0128] In summary, the present invention provides an optical element driving mechanism, comprising a movable part, a fixed part and a driving assembly. The movable part is used to connect an optical element, and the movable part can move relative to the fixed part. The driving assembly is used to drive the movable part to move relative to the fixed part.

[0129] Although the embodiments of the present invention and their advantages have been disclosed as above, it should be understood that those skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the present invention. In addition, the scope of protection of the present invention is not limited to the processes, machines, manufactures, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any technician in the relevant technical field can understand the current or future developed processes, machines, manufactures, material compositions, devices, methods and steps from the disclosure of the present invention. As long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can all be used according to the present invention. Therefore, the scope of protection of the present invention includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. 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.

[0130] Although the present invention is disclosed as above with several preferred embodiments, they are not intended to limit the present invention. A person skilled in the art of the present invention may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the attached claims. In addition, each claim constitutes an independent embodiment, and the combination of various claims and embodiments is within the scope of the present invention.

Claims

1. An optical element driving mechanism, comprising: A movable portion, used to connect an optical element; a fixed portion, wherein the movable portion is movable relative to the fixed portion; as well as A driving assembly is used to drive the movable part to move relative to the fixed part.

2. The optical element driving mechanism of claim 1 , wherein when viewed along a principal axis, the fixing portion comprises a polygonal profile, and the polygonal profile comprises: A first side edge extending along a first axial direction; as well as a second side extending along a second axial direction, The first axial direction and the second axial direction are not parallel. The maximum dimension of the first side in the first axial direction is different from the maximum dimension of the second side in the second axial direction, The driving assembly is located on the first side.

3. The optical element driving mechanism as claimed in claim 2, wherein the driving assembly comprises: One coil; a first magnetic element corresponding to the coil; as well as a second magnetic element, adjacent to the first magnetic element, The first magnetic element has a first surface, the first surface faces the coil, and the first surface is perpendicular to a third axial direction. The first magnetic element further has a second surface, the second surface faces the second magnetic element, and the second surface is perpendicular to a fourth axial direction. The second magnetic element has a third surface, the third surface faces the first magnetic element, and the third surface is perpendicular to the fourth axial direction. When viewed along the fourth axial direction, at least a portion of the second surface does not overlap with the third surface.

4. An optical element driving mechanism as described in claim 3, wherein the second magnetic element further has a fourth surface and a fifth surface, the fourth surface and the fifth surface are parallel to the fourth axis, the fourth surface is not parallel to the fifth surface, and the fourth surface is not perpendicular to the fifth surface.

5. An optical element driving mechanism as described in claim 3, wherein when observed along the fourth axis, the first magnetic element has a long strip structure, and in the long axis direction of the long strip structure, the maximum size of the first magnetic element is different from the maximum size of the second magnetic element.

6. The optical element driving mechanism as claimed in claim 3, wherein the fixing portion comprises an outer frame, the outer frame has a top wall, and the distance between the second magnetic element and the top wall is smaller than the distance between the first magnetic element and the top wall, A first recessed portion is formed on the top wall, and when viewed along the fourth axial direction, the first recessed portion does not overlap with the second magnetic element. When viewed along the fourth axial direction, the first recessed portion overlaps with the first magnetic element.

7. The optical element driving mechanism as claimed in claim 6, wherein the outer frame further comprises a second recessed portion corresponding to the second magnetic element, When viewed along the main axis, the second recessed portion is located on the first side. When viewed along the main axis, the second recessed portion overlaps with the second magnetic element. When viewed along the main axis, the first recessed portion is located at a corner of the fixing portion. When viewed along the main axis, the first recessed portion is located at the first side edge, When viewed along the main axis, the first recessed portion is adjacent to the second recessed portion, The first recessed portion has a first recessed surface, and the first recessed surface faces the first magnetic element. A gap greater than zero is formed between the first concave surface and the first magnetic element.

8. The optical element driving mechanism as claimed in claim 7, wherein the outer frame further comprises a side wall, the side wall is connected to the top wall, and the optical element driving mechanism further comprises a connecting element, the first magnetic element is connected to the side wall via the connecting element, The second recessed portion has a second recessed surface, the second recessed surface faces the second magnetic element, and the connecting element directly contacts the second recessed surface. The first concave surface is connected to the side wall, The second magnetic element is connected to the side wall via the connecting element.

9. An optical element driving mechanism as described in claim 3, wherein when observed along the fourth axis, the maximum dimension of the first magnetic element on the third axis is the same as the maximum dimension of the second magnetic element on the third axis, and the first magnetic element and the second magnetic element are both arranged on the first side.

10. The optical element driving mechanism as claimed in claim 3, wherein the optical element driving mechanism further comprises a vibration damping component for suppressing vibration of the movable part, and the vibration damping component comprises: a first setting portion, located on the movable portion, wherein when viewed along a fifth axial direction, the first setting portion extends along an extension direction and protrudes from the movable portion; as well as a vibration damping element, disposed on a first side surface of the first mounting portion, Wherein, when viewed along the fifth axial direction, the first side surface is not perpendicular to the extending direction, The first setting portion further includes a second side surface, adjacent to the first side surface and not parallel to the first side surface. The first setting portion further includes a third side surface, adjacent to the second side surface and not parallel to the second side surface. When viewed along the fifth axial direction, the first side surface and the third side surface are respectively located on opposite sides of the first setting portion. The vibration-absorbing element does not contact the third side surface, The first side surface and the third side surface are parallel to each other.

11. The optical element driving mechanism as claimed in claim 10, wherein the vibration-absorbing component further comprises a second setting portion, which is located on the fixing portion and has a fourth side surface, and the vibration-absorbing element directly contacts the fourth side surface. The fourth side faces the first side, The first setting part and the second setting part can move relative to each other, When viewed along the fifth axial direction, the fourth side surface is not perpendicular to the extending direction. The second setting portion further includes a fifth side surface, and when viewed along the fifth axial direction, the fourth side surface and the fifth side surface are located at opposite sides of the second setting portion.

12. The optical element driving mechanism as claimed in claim 3, wherein the third axial direction is parallel to the second axial direction.

13. The optical element driving mechanism as claimed in claim 3, wherein the optical element driving mechanism further comprises an elastic element, and the elastic element comprises: A movable part fixing section, fixed on the movable part; A fixing section of the fixing part, fixed on the fixing part; as well as A string segment connects the movable portion fixed segment and the fixed portion fixed segment, wherein the fixed portion fixed segment is located at the second side.

14. An optical element driving mechanism as described in claim 3, wherein the fixed part includes an outer frame and a base, the outer frame includes a side wall, the base includes a side column, and the side wall and the side column are connected to each other, wherein the movable part includes a winding column, the end of the coil is wound around the winding column, an opening is formed on the side column, and the winding column is accommodated in the opening.

15. An optical element driving mechanism as described in claim 3, wherein the fixing portion includes a base, the base includes a bottom plate and a side column, the side column is connected to the bottom plate, and a through hole is formed on the side column, wherein the optical element driving mechanism also includes a sensor accommodated in the through hole.

16. An optical element driving mechanism as described in claim 3, wherein the fixed part includes a base, the base includes a bottom plate and a side column, the side column is connected to the bottom plate, and a recessed structure is formed on the surface of the side column facing away from the movable part, wherein the optical element driving mechanism also includes a sensor, which is arranged on the side column and located in the recessed structure.

17. An optical element driving mechanism as described in claim 3, wherein the fixing portion includes a base, the base includes a bottom plate and a side column, the side column is connected to the bottom plate, and a hole is formed on the bottom plate, wherein the optical element driving mechanism also includes a sensor accommodated in the hole.

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