Optical element driving mechanism

Abstract

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

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an optical element driving mechanism. BACKGROUND

[0002] With the development of technology, nowadays many electronic devices (e.g. smart phones or digital cameras) have the function of taking pictures or videos. These electronic devices are increasingly popular and are developing towards the direction of convenience and thinness, to provide users with more choices.

[0003] The aforementioned electronic devices with the function of taking pictures or videos usually have an optical element driving mechanism to drive an optical element (e.g. a lens) to move along an optical axis, thereby achieving the functions of auto focus (AF) or optical image stabilization (OIS). Light can pass through the aforementioned optical element to form an image on a photosensitive element. However, the trend of today's mobile devices is to have a smaller size and higher durability, so how to effectively reduce the size of the optical element driving mechanism and improve its durability has become an important issue. SUMMARY

[0004] The purpose of the present utility model is to provide an optical element driving mechanism to solve at least one of the above problems.

[0005] The present disclosure provides an optical element driving mechanism, including a movable part, a fixed part, and a driving assembly. The movable part is used to connect an optical element. 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.

[0006] In some embodiments, the optical element driving mechanism further includes a first support assembly, and the movable part can move relative to the fixed part in a first dimension via the first support assembly. The first support assembly includes a first moving part, a first contact part, a second contact part, a second moving part, and a third contact part. The first contact part can move relative to the first moving part and contact the first moving part. The second contact part can move relative to the first moving part and contact the first moving part. The third contact part can move relative to the second moving part and contact the second moving part. The line connecting the centers of the first contact part and the second contact part is defined as a first imaginary line. The first contact part and the second contact part are arranged along a first axis. In the direction of extension of the first axis, the first moving part and the second moving part do not overlap. In the direction of extension of a second axis, the first moving part and the second moving part at least partially overlap. The first axis and the second axis are not parallel.

[0007] In some embodiments, the optical element driving mechanism further comprises a first force applying element, a second force applying element, and a third force applying element. The second force applying element corresponds to the first force applying element to generate a first abutting force. The third force applying element corresponds to the first force applying element to generate a second abutting force. In the direction in which the second axis extends, the center of the second force applying element is between the first imaginary line and the center of the movable part. The movable part and the fixed part are arranged along a main axis. When viewed along the main axis, the center of the second force applying element is in a triangle formed by the centers of the first contact part, the second contact part, and the third contact part. In the direction in which the second axis extends, the shortest distance between the center of the third force applying element and the center of the movable part is different from the shortest distance between the center of the second force applying element and the center of the movable part. In the direction in which the first axis extends, the shortest distance between the first force applying element and the second force applying element is different from the shortest distance between the first force applying element and the third force applying element.

[0008] The first axis is perpendicular to the second axis.

[0009] In some embodiments, in the direction in which the second axis extends, the shortest distance between the center of the third force applying element and the center of the movable part is smaller than the shortest distance between the center of the second force applying element and the center of the movable part. In the direction in which the first axis extends, the shortest distance between the first force applying element and the second force applying element is larger than the shortest distance between the first force applying element and the third force applying element. In the direction in which the first axis extends, the second force applying element and the third force applying element do not overlap.

[0010] In some embodiments, the optical element driving mechanism further comprises a first circuit element, a first adhesive element, and a second adhesive element. The first circuit element is electrically connected to the driving assembly. When viewed along the main axis, the second force applying element is between the first force applying element and the first circuit element. The second force applying element connects the first circuit element via the first adhesive element. The first adhesive element has a metal material. Any electrical signal in the first circuit element does not pass through the second force applying element. The second force applying element is electrically independent of the driving assembly. The second force applying element has a metal material. The third force applying element connects the first circuit element via the second adhesive element. The second adhesive element has a resin material. The third force applying element has a metal material. When viewed along the first axis, the area of the second force applying element is different from the area of the third force applying element. The maximum dimension of the second force applying element along the first axis is different from the maximum dimension of the third force applying element along the first axis.

[0011] In some embodiments, the driving assembly includes a first coil, a first magnetic element, a second magnetic element, and a third magnetic element. The first magnetic element has a first magnetic element surface facing the first coil, and has a first pair of magnetic poles arranged along a first magnetic pole direction. The second magnetic element is adjacent to the first magnetic element and has a second pair of magnetic poles arranged along a second magnetic pole direction. The third magnetic element has a third pair of magnetic poles arranged along a third magnetic pole direction. The first magnetic pole direction is not parallel to the first magnetic element surface. The second magnetic pole direction is not parallel to the first magnetic pole direction. The second magnetic element is fixedly connected to the first magnetic element. A second magnetic element surface of the second magnetic element faces the first magnetic element. The first magnetic pole direction and the third magnetic pole direction are parallel and opposite.

[0012] In some embodiments, the optical element driving mechanism further includes a first connecting element and a first reinforcing element. The first magnetic element is fixedly connected to the second magnetic element via the first connecting element. The first reinforcing element has a metallic material and corresponds to the first magnetic element. The first connecting element is located at an interface between the first magnetic element and the second magnetic element. A center of the first magnetic element is located between the first connecting element and the first magnetic element surface. The first connecting element connects the first reinforcing element. The first connecting element is located in a first opening of the first reinforcing element. The first reinforcing element has a magnetic conductive material.

[0013] In some embodiments, the optical element driving mechanism further includes a second connecting element connected to the first magnetic element. The arrangement direction of the first connecting element and the second connecting element is parallel to the first magnetic element surface. The second connecting element is located in a second opening of the first reinforcing element. The second connecting element connects the first reinforcing element. In a direction perpendicular to the first magnetic element surface, the second magnetic element at least partially overlaps the first coil.

[0014] In some embodiments, the driving assembly further includes a third coil and a seventh magnetic element corresponding to the third coil. The seventh magnetic element is movable relative to the first magnetic element. When viewed along a direction perpendicular to the first magnetic element surface, the first magnetic element and the seventh magnetic element are located at different sides of a fixed part having a polygonal structure.

[0015] In some embodiments, the optical element driving mechanism further includes a position sensing assembly for sensing movement of the optical element, a first circuit element, and a second force applying element. The position sensing assembly includes a first position sensing element. The movable part and the fixed part are arranged along a main axis. When viewed along the main axis, the first position sensing element and the second force applying element are arranged along a second axis. The first position sensing element is disposed on the first circuit element.

[0016] The utility model discloses beneficial effect lies in, the special relative position, size relation of each element disclosed in the present disclosure can not only make drive mechanism reach the thin -walled of specific direction, the miniaturization of whole, in addition via the collocation different optical module makes system further improve optical quality (for example, photographic quality or is depth sensing precision etc.), further utilize each optical module reaches multiple shockproof system to improve the effect of anti -hand shake greatly. BRIEF DESCRIPTION OF DRAWINGS

[0017] The following will cooperate with the attached drawings to detail the embodiments of the present disclosure. It should be noted that, according to the standard practice in the industry, various features are not shown in proportion and are only used to illustrate examples. In fact, the size of the elements can be arbitrarily enlarged or reduced to clearly show the features of the present disclosure.

[0018] FIG. 1A It is the schematic diagram of optical element drive mechanism.

[0019] FIG. 1B It is the explosion drawing of optical element drive mechanism.

[0020] FIG. 1C It is the plan view of optical element drive mechanism.

[0021] FIG. 2A It is the section view along the line segment A-A of FIG. 1C .

[0022] FIG. 2B It is the section view along the line segment B-B of FIG. 1C .

[0023] FIG. 3A , FIG. 3B , FIG. 3C It is the plan view of some elements of optical element drive mechanism.

[0024] FIG. 3D It is the enlarged view of the area of FIG. 3C .

[0025] FIG. 4 It is the side view of some elements of optical element drive mechanism.

[0026] The reference signs are as follows:

[0027] 1000: optical element drive mechanism

[0028] 1100: fixed part

[0029] 1110: outer frame

[0030] 1120: base

[0031] 1200: movable part

[0032] 1210: bearing seat

[0033] 1220: frame

[0034] 1300: drive assembly

[0035] 1310: first magnetic element

[0036] 1311: first magnetic element surface

[0037] 1312: first magnetic pole direction

[0038] 1315: first coil

[0039] 1320: second magnetic element

[0040] 1321: second magnetic element surface

[0041] 1322: second magnetic pole direction

[0042] 1325: second coil

[0043] 1330: third magnetic element

[0044] 1332: third magnetic pole direction

[0045] 1335: third coil

[0046] 1340: fourth magnetic element

[0047] 1350: fifth magnetic element

[0048] 1360: sixth magnetic element

[0049] 1370: seventh magnetic element

[0050] 1400: first support assembly

[0051] 1410: first movement portion

[0052] 1420: second movement portion

[0053] 1431: first contact portion

[0054] 1432: second contact portion

[0055] 1433: third contact portion

[0056] 1441: first force applying element

[0057] 1442: second force applying element

[0058] 1443: third force applying element

[0059] 1500: first circuit element

[0060] 1511 : first opening

[0061] 1512: second opening

[0062] 1520: second reinforcing element

[0063] 1530: first position sensing element

[0064] 1531 : first connecting element

[0065] 1532: second connecting element

[0066] 1533: third connecting element

[0067] 1534: fourth connecting element

[0068] 1540: second position sensing element

[0069] 1550: third position sensing element

[0070] 1600: elastic element

[0071] 1710: first adhesive element

[0072] 1720: second adhesive element

[0073] 1900: main shaft

[0074] 1901 : first shaft

[0075] 1902: second shaft

[0076] 1903: third shaft

[0077] 1911 : first imaginary line

[0078] 1920: center

[0079] 1931, 1932, 1941, 1942: shortest distance

[0080] 1951, 1952: maximum dimension

[0081] 1960: area

[0082] 1962: triangle

[0083] X, Y, Z: coordinates DETAILED DESCRIPTION

[0084] The following discloses many different implementations or examples to carry out the different features provided. Specific embodiments of the elements and their arrangements are described below to illustrate this disclosure. Of course, these embodiments are merely illustrative and should not be construed as limiting the scope of this disclosure. For example, the specification mentions that a first feature is formed on a second feature. This may include embodiments where the first and second feature are in direct contact, or embodiments where there are other features between the first and second feature; in other words, the first and second feature are not in direct contact.

[0085] Furthermore, repeated reference numerals or designations may be used in different embodiments. These repetitions are merely for the purpose of clearly and simply describing this disclosure and do not represent a specific relationship between the different embodiments and / or structures discussed. Additionally, the formation, connection, and / or coupling to another feature component in this disclosure may include embodiments in which the feature components are formed in direct contact, and may also include embodiments in which additional feature components may be formed to insert into the aforementioned feature component, such that the aforementioned feature components may not be in direct contact. Furthermore, spatially related terms such as “vertical,” “above,” “up,” “below,” “bottom,” and similar terms (e.g., “downward,” “upward,” etc.) may be used to facilitate the description of the relationship between one element(s) or feature(s) in the illustrations and another element(s) or feature(s). These spatially related terms are intended to cover different orientations of the device including the feature.

[0086] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant art and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.

[0087] Furthermore, the use of ordinal numbers such as "first" and "second" in the specification and claims to modify the elements of the claims does not imply or represent any prior ordinal number of the claimed element, nor does it represent the order of one claimed element with another, or the order of manufacturing methods. The use of multiple ordinal numbers is only to enable a claimed element with a certain name to be clearly distinguished from another claimed element with the same name.

[0088] In addition, in some embodiments of the present disclosure, the terms related to joining, connecting, such as "connected", "interconnected", etc., unless specifically defined, can refer to two structures being in direct contact, or can also refer to two structures not being in direct contact, with other structures being disposed between the two structures. Also, the terms related to joining, connecting can also include cases where both of the two structures are movable, or both of the two structures are fixed.

[0089] Embodiments of the present disclosure provide an optical element driving mechanism for driving an optical element to move. For example, FIG. 1A is a schematic diagram of an optical element driving mechanism 1000. FIG. 1B is an exploded view of the optical element driving mechanism 1000. FIG. 1C is a top view of the optical element driving mechanism 1000.

[0090] As shown in FIG. 1A to FIG. 1C , the optical element driving mechanism 1000 can mainly include a fixed part 1100 (including an outer frame 1110, a base 1120), a movable part 1200 (including a bearing seat 1210, a frame 1220), a driving assembly 1300, a first moving part 1410, a second moving part 1420, a first circuit element 1500, and an elastic element 1600 arranged along a main shaft 1900, for driving an optical element (not shown) to move.

[0091] In some embodiments, the aforementioned optical element can be disposed in the bearing seat 1210, and can be, for example, a lens, a mirror, a prism, a reflective polished surface, an optical coating, a beam splitter, an aperture, a liquid lens, an image sensor, a camera module, a ranging module, etc. It should be noted that the definition of the optical element herein is not limited to elements related to visible light, and elements related to non-visible light (such as infrared light, ultraviolet light), etc. can also be included in the present disclosure.

[0092] In some embodiments, the outer frame 1110 and the base 1120 of the fixing part 1100 can be combined to form the housing of the optical element driving mechanism 1000, and other components of the optical element driving mechanism 1000 can be disposed within the housing formed by the outer frame 1110 and the base 1120 to protect other components. For example, the base 1120 can be fixedly connected to the outer frame 1110. In some embodiments, additional circuitry can be embedded in the base 1120 to allow the components in the optical element driving mechanism 1000 to be electrically connected to other components.

[0093] In some embodiments, the support 1210 and frame 1220 of the movable part 1200 may be disposed in the fixed part 1100 and may be movable relative to the fixed part 1100. That is, the support 1210 and frame 1220 are movably connected to the fixed part 1100. In addition, the support 1210 may also be movable relative to the frame 1220.

[0094] In some embodiments, the drive assembly 1300 can be used to drive the carrier 1210 and the frame 1220 to move relative to the fixed part 1100 to achieve the effects of autofocus (AF) or optical image stabilization (OIS).

[0095] In some embodiments, the first circuit element 1500 may be, for example, a printed circuit board (PCB), which may be disposed on the frame 1220, for example, by adhesive fixation, for electrically connecting other components in the optical element drive mechanism 1000 (e.g., drive assembly 1300) and external devices, thereby providing electrical signals. This allows control of the movement of the movable part 1200 along the X, Y, and Z axes, thereby achieving the functions of autofocus (AF) or optical image stabilization (OIS). The drive assembly 1300 may be adhesively fixed to the first circuit element 1500.

[0096] In some embodiments, the elastic element 1600, for example, can be made of metal, can be arranged between the movable part 1200 and the fixed part 1100, and can be used to movably connect the movable part 1200 to the fixed part 1100, so as to allow the carrier 1210 and the optical element arranged on the carrier 1210 to move relative to the fixed part 1100. In addition, the elastic element 1600 can also be electrically connected to the circuit embedded in the base 1120, and can be electrically connected to other electronic elements in the optical element driving mechanism 1000. For example, the elastic element 1600 can include a spring piece perpendicular to the Z-axis and a hanging ring wire parallel to the Z-axis. The spring piece can be arranged on one side of the movable part 1200, and the hanging ring wire can cross the movable part 1200, so as to transmit a signal on one side of the movable part 1200 to the other side, for example, to the circuit embedded in the base 1120.

[0097] FIG. 2A is a cross-sectional view taken along the line segment A-A of FIG. 1C , and FIG. 2B is a cross-sectional view taken along the line segment B-B of FIG. 1C . FIG. 3A , FIG. 3B , FIG. 3C are top views of some elements of the optical element driving mechanism 1000, in which different elements are shown respectively, so as to better describe the positional relationship between the elements. As shown in FIG. 2A to FIG. 3C , the driving assembly 1300 of the optical element driving mechanism 1000 can include a first magnetic element 1310, a second magnetic element 1320, a third magnetic element 1330, a fourth magnetic element 1340, a fifth magnetic element 1350, a sixth magnetic element 1360, a seventh magnetic element 1370, a first coil 1315, a second coil 1325, and a third coil 1335. The first magnetic element 1310, the second magnetic element 1320, the third magnetic element 1330, the fourth magnetic element 1340, the fifth magnetic element 1350, the sixth magnetic element 1360, the first coil 1315, and the second coil 1325 can be used to drive the carrier 1210 to move relative to the frame 1220, and the seventh magnetic element 1370 and the third coil 1335 can be used to drive the frame 1220 to move relative to the fixed part 1100, so as to achieve the functions of auto focus (AF) and optical image stabilization (OIS).

[0098] For example, the first coil 1315 and the second coil 1325 can be disposed on the base 1120, while the first magnetic element 1310, the second magnetic element 1320, the third magnetic element 1330, the fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360 can be disposed on the frame 1220. Furthermore, the first coil 1315 can correspond to the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 (e.g., at least partially overlapping on the Z-axis), and the second coil 1325 can correspond to the fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360 (e.g., at least partially overlapping on the Z-axis) to generate electromagnetic driving forces in different directions to drive the frame 1220 to move relative to the base 1120, thereby achieving optical anti-shake functionality. Furthermore, the third coil 1335 can be mounted on the frame 1220, and the seventh magnetic element 1370 can be mounted on the support 1210 to drive the support 1210 to move relative to the frame 1220, thereby achieving the function of autofocus. It should be noted that the positions of the aforementioned magnetic elements and coils are only examples, and their positions can be interchanged to achieve a similar effect, depending on the design requirements.

[0099] In some embodiments, such as FIG. 2A As shown, the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 can be arranged sequentially in the X direction, and the second magnetic element 1320 can be disposed between the first magnetic element 1310 and the third magnetic element 1330, and directly contact the first magnetic element 1310 and the third magnetic element 1330. In some embodiments, the second magnetic element 1320 is fixedly connected to the first magnetic element 1310 and the third magnetic element 1330.

[0100] In some embodiments, the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 may each have a first magnetic pole pair, a second magnetic pole pair, and a third magnetic pole pair (a pair of S poles and a pair of N poles), and may be arranged along the first magnetic pole direction 1312, the second magnetic pole direction 1322, and the third magnetic pole direction 1332, respectively. The first magnetic pole direction 1312, the second magnetic pole direction 1322, and the third magnetic pole direction 1332 may face different directions; for example, the first magnetic pole direction 1312 and the second magnetic pole direction 1322 may not be parallel, and the second magnetic pole direction 1322 and the third magnetic pole direction 1332 may not be parallel. Furthermore, the first magnetic pole direction 1312 and the third magnetic pole direction 1332 may be parallel to each other but opposite, for example, facing the -Z direction and the +Z direction, respectively.

[0101] This design enhances the overall magnetic flux density of the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 on the side closest to the first coil 1315, thereby increasing the driving force. Furthermore, the first magnetic element 1310 may have a first magnetic element surface 1311 facing the first coil 1315, and the first magnetic pole direction 1312 is not parallel to the first magnetic element surface 1311; for example, they may be perpendicular to each other. The second magnetic element 1320 may have a second magnetic element surface 1321 facing the first magnetic element 1310.

[0102] In some embodiments, a first reinforcing element 1510 may be provided on the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330. The first reinforcing element 1510 may be made of metal and may have a first opening 1511 and a second opening 1512. A first connecting element 1531 may be provided through the first opening 1511 so that the second magnetic element 1320 is fixedly connected to the first magnetic element 1310 and the third magnetic element 1330 via the first connecting element 1531. For example, the connection may be made by welding or laser welding, and the first connecting element 1531 may be solder or the molten portion produced by welding. That is, the first connecting element 1531 can be located at the junction of the first magnetic element 1310 and the second magnetic element 1320, and at the junction of the second magnetic element 1320 and the third magnetic element 1330, and connects to the first reinforcing element 1510 to fix the first magnetic element 1310, the second magnetic element 1320 and the third magnetic element 1330.

[0103] In some embodiments, the first connecting element 1531 may be disposed on the surface opposite to the surface 1311 of the first magnetic element, that is, the center of the first magnetic element 1310 is located between the first connecting element 1531 and the surface 1311 of the first magnetic element. In some embodiments, welding or fusion may also be performed between the interfaces of the first reinforcing element 1510 and the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 to connect the first reinforcing element 1510 and the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330.

[0104] In addition, a second connecting element 1532 can be disposed in the second opening 1512 to connect the first reinforcing element 1510 and the first magnetic element 1310 and the third magnetic element 1330. The arrangement direction of the first connecting element 1531 and the second connecting element 1532 can be parallel to the surface 1311 of the first magnetic element, for example, arranged in the X direction. The second connecting element 1532 can be, for example, a light-cured adhesive, a heat-cured adhesive, a moisture-cured adhesive, an AB adhesive (acrylic, epoxy, polyurethane, etc.), but is not limited thereto.

[0105] In some embodiments, the first coil 1315 and the corresponding first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 can be used to drive the frame 1220 to move relative to the base 1120 in the X-axis. Similarly, as shown, the second coil 1325 and the corresponding fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360 can also have a similar connection relationship with the first coil 1315 and the corresponding first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330. FIG. 2B

[0106] For example, the second reinforcing element 1520 can be disposed on the fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360, and the fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360 can be connected by a third connecting element 1533, which can be disposed in the second reinforcing element 1520, and the second reinforcing element 1520 and the fourth magnetic element 1340 and the sixth magnetic element 1360 can be further connected by a fourth connecting element 1534. The second coil 1325 and the corresponding fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360 can be used to drive the frame 1220 to move relative to the base 1120 in the Y-axis. Thus, driving in different axes can be achieved to achieve the effect of optical anti-shake. In some embodiments, the first reinforcing element 1510 and the second reinforcing element 1520 can have a magnetic conductive material.

[0107] In some embodiments, the third coil 1335 and the seventh magnetic element 1370 and the first coil 1315 can be disposed on different sides of the optical element driving mechanism 1000, for example, on both sides of the carrier seat 1210. Specifically, when viewed in a direction perpendicular to the surface 1311 of the first magnetic element (when viewed along the main axis 1900), the first magnetic element 1310 and the seventh magnetic element 1370 are located on different sides of the fixed portion 1100 having a polygonal structure.

[0108] ​The third coil 1335 can be disposed on the frame 1220, and the seventh magnetic element 1370 can be disposed on the carrier 1210 to drive the carrier 1210 to move relative to the frame 1220 on the Z axis, so as to achieve the function of automatic focusing. That is, the seventh magnetic element 1370 can move relative to the first magnetic element 1310 disposed on the frame 1220. The third coil 1335 can correspond to the seventh magnetic element 1370, for example, at least partially overlap on the X axis.

[0109] In order to avoid the active part 1200 from turning over when moving, in some embodiments, the seventh magnetic element 1370 can be used as the first force applying element 1441, for example, the seventh magnetic element 1370 and the first force applying element 1441 can have an integrated structure, and a second force applying element 1442 can be disposed on one side of the first circuit element 1500 to generate a first abutting force with the first force applying element 1441. In addition, a third force applying element 1443 can also be disposed on the other side of the first circuit element 1500 to generate a second abutting force with the first force applying element 1441, so as to stabilize the position of the carrier 1210 relative to the frame 1220. The second force applying element 1442 and the third force applying element 1443 can for example include a magnetic conductive material, and can include a metal material.

[0110] In some embodiments, a position sensing assembly can be disposed in the optical element driving mechanism 1000 to sense the position of the carrier 1210 and the frame 1220 relative to the fixed part 1100, so as to sense the movement of the optical element. For example, as shown in FIG. 13, the position sensing assembly can for example include a first position sensing element 1530, a second position sensing element 1540, and a third position sensing element 1550. The first position sensing element 1530 can for example be disposed on the first circuit element 1500 and electrically connected to the first circuit element 1500. The second position sensing element 1540 and the third position sensing element 1550 are disposed on the base 1120 and can be electrically connected to the circuit in the base 1120. FIG. 2A 、 FIG. 2B 、 FIG. 3B 、 FIG. 3C

[0111] ​In some embodiments, the first position sensing element 1530 may be disposed in the third coil 1335 for sensing the magnetic field of the seventh magnetic element 1370, thereby obtaining the position of the seventh magnetic element 1370 and the support 1210. The second position sensing element 1540 may be disposed in the first coil 1315 for sensing the magnetic fields of the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330, thereby obtaining the position of the first magnetic element 1310, the second magnetic element 1320, the third magnetic element 1330, and the frame 1220 relative to the fixing part 1100. The third position sensing element 1550 may be disposed in the second coil 1325 for sensing the magnetic fields of the fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360, thereby obtaining the position of the fourth magnetic element 1340, the fifth magnetic element 1350, the sixth magnetic element 1360, and the frame 1220.

[0112] In some embodiments, the first position sensing element 1530, the second position sensing element 1540, and the third position sensing element 1550 may include a Hall effect sensor, a magnetoresistive effect sensor (MR sensor), or a giant magnetoresistive effect sensor.

[0113] (Giant Magnetoresistance Effect Sensor, GMR Sensor), Tunneling Magnetoresistance Effect Sensor, TMR Sensor, or Fluxgate Sensor.

[0114] In some embodiments, such as FIG. 3C As shown, in the direction extending from the second axis 1902 (Y direction), the shortest distance 1932 between the center of the third force-applying element 1443 and the center 1920 of the movable part 1200 may differ from the shortest distance 1931 between the center of the second force-applying element 1442 and the center 1920 of the movable part 1200. For example, the shortest distance 1932 between the center of the third force-applying element 1443 and the center 1920 of the movable part 1200 may be smaller than the shortest distance 1931 between the center of the second force-applying element 1442 and the center 1920 of the movable part 1200.

[0115] also, FIG. 3D yes FIG. 3C An enlarged view of the region from 1960. (See image below.) FIG. 3DAs shown, in the direction (X direction) extending along the third axis 1903, the shortest distance 1941 between the first force-applying element 1441 and the second force-applying element 1442 is different from the shortest distance 1942 between the first force-applying element 1441 and the third force-applying element 1443. For example, the shortest distance 1941 between the first force-applying element 1441 and the second force-applying element 1442 may be smaller than the shortest distance 1942 between the first force-applying element 1441 and the third force-applying element 1443. Furthermore, the maximum dimension 1951 of the second force-applying element 1442 on the third axis 1903 is different from the maximum dimension 1952 of the third force-applying element 1443 on the third axis 1903. For example, the maximum dimension 1951 of the second force-applying element 1442 on the third axis 1903 may be smaller than the maximum dimension 1952 of the third force-applying element 1443 on the third axis 1903. In some embodiments, when viewed along the main axis 1900, the second force-applying element 1442 is located between the first force-applying element 1441 and the first circuit element 1500. Furthermore, the first position sensing element 1530 and the second force-applying element 1442 may be arranged along the second axis 1902.

[0116] In some embodiments, a first bonding element 1710 and a second bonding element 1720 may be provided on the first circuit element 1500 to fix the second force-applying element 1442 and the third force-applying element 1443 to the first circuit element 1500, respectively. In some embodiments, the first bonding element 1710 may include a metallic material, such as solder, and any electrical signal in the first circuit element 1500 does not pass through the second force-applying element 1442 (except for grounding). That is, the second force-applying element 1442 and the driving assembly 1300 may be electrically independent of each other to avoid signal interference and to prevent short circuits. The second bonding element 1720 may include, for example, a non-conductive material, such as resin, photocurable adhesive, thermocurable adhesive, moisture-curing adhesive, AB adhesive (acrylic, epoxy, polyurethane, etc.), but is not limited thereto.

[0117] FIG. 4 This is a side view of some components of the optical element drive mechanism 1000. (Example) FIG. 4 As shown, when viewed along the third axis 1903 (X-axis), the second force-applying element 1442 does not overlap with the third force-applying element 1443, and the third coil 1335 also does not overlap with the second force-applying element 1442. This allows for a reduction in size along the X-axis, achieving miniaturization. Furthermore, when viewed along the third axis 1903, the area of ​​the second force-applying element 1442 differs from the area of ​​the third force-applying element 1443; for example, the area of ​​the second force-applying element 1442 can be smaller than the area of ​​the third force-applying element 1443. Because the second force-applying element 1442 has a smaller size, the bearing force it generates will not significantly affect the normal operation of the optical element drive mechanism 1000.

[0118] In some embodiments, such as FIG. 4 As shown, the support 1210 can be movably connected to the frame 1220 via a first support assembly 1400. For example, the first support assembly 1400 may include a first moving part 1410, a second moving part 1420, a first contact part 1431, a second contact part 1432, and a third contact part 1433. The first contact part 1431 and the third contact part 1433 may be part of the frame 1220, while the second contact part 1432 may be part of the base 1120.

[0119] Specifically, the first moving part 1410 may be disposed between the first contact part 1431 and the second contact part 1432 to directly contact the first contact part 1431 and the second contact part 1432, and may move relative to the first contact part 1431. The second moving part 1420 may be disposed in the third contact part 1433 to directly contact the third contact part 1433, and may move relative to the third contact part 1433. In some embodiments, the first moving part 1410 and the second moving part 1420 may have a columnar shape and extend along the first axis 1901 (Z-axis). In some embodiments, the first moving part 1410 and the second moving part 1420 may also have a ball structure, for example, they may include a collection of multiple balls arranged along the Z-axis. Thus, the movable part 1200 may be allowed to move relative to the fixed part 1100 in a first dimension (movement parallel to the Z-axis) via the first support assembly 1400.

[0120] like FIG. 4 As shown, the first contact portion 1431 and the second contact portion 1432 can be arranged along the first axis 1901, and the line connecting the centers of the first contact portion 1431 and the second contact portion 1432 can be defined as the first imaginary line 1911. In some embodiments, the first moving portion 1410 and the second moving portion 1420 do not overlap in the direction extending from the first axis 1901 (Z direction). Furthermore, the first moving portion 1410 and the second moving portion 1420 at least partially overlap in the direction extending from the second axis 1902 (Y direction). The first moving portion 1410 and the second moving portion 1420 do not overlap in the direction extending from the third axis 1903 (X direction). In some embodiments, the first axis 1901, the second axis 1902, and the third axis 1903 are not parallel to each other, for example, they can be perpendicular to each other. With this arrangement, the size of the optical element driving mechanism 1000 in a certain direction can be reduced, thereby achieving miniaturization.

[0121] In some embodiments, in the direction in which the second axis 1902 extends, the center of the second force-applying element 1442 is located between the first imaginary line 1911 and the center 1920 of the movable portion 1200. Furthermore, as... FIG. 4As shown, the center of the second force applying element 1442 is located in a triangle 1962 formed by the centers of the first contact portion 1431, the second contact portion 1432 and the third contact portion 1433 when viewed along the third axis 1903. Thus, the moment caused by the second force applying element 1442 to the movable portion 1200 can be reduced to avoid unwanted flipping of the movable portion 1200 when the optical element driving mechanism 1000 is in motion, and thus the driving precision can be improved.

[0122] In summary, the optical element driving mechanism according to the embodiments of the present disclosure includes a movable portion, a fixed portion and a driving assembly. The movable portion is used to connect an optical element. The movable portion is movable relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion. Thus, the effects of auto-focusing, optical hand-shake prevention, zooming and the like can be achieved, and miniaturization can also be achieved.

[0123] The specific relative positions and size relationships of the elements disclosed in the present disclosure not only enable the driving mechanism to be thinned in a specific direction and miniaturized as a whole, but also enable the system to further improve optical quality (e.g., shooting quality or depth sensing precision) by being combined with different optical modules, and further enables the use of multiple anti-shake systems of the optical modules to greatly improve the effect of hand-shake prevention.

[0124] Although the embodiments of the present disclosure and their advantages have been disclosed as above, it should be understood that those skilled in the art, without departing from the spirit and scope of the present disclosure, can make changes, substitutions and modifications. In addition, the protection scope of the present disclosure is not limited to the processes, machines, manufactures, compositions of matter, means, methods and steps in the specific embodiments described in the specification, but any processes, machines, manufactures, compositions of matter, means, methods and steps currently known or developed in the future that can substantially achieve the same functions or obtain substantially the same results as the embodiments described herein can be used according to the present disclosure. Therefore, the protection scope of the present disclosure includes the above processes, machines, manufactures, compositions of matter, means, methods and steps. In addition, each claim constitutes an individual embodiment, and the protection scope of the present disclosure also includes the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, characterized in that, include: A movable part for connecting an optical element; A fixed part, and the movable part can move relative to the fixed part; A drive assembly for driving the movable part to move relative to the fixed part; as well as A first support assembly, wherein the movable part is movable relative to the fixed part in a first dimension via the first support assembly, and includes: First Sports Department; A first contact portion is movable relative to the first moving portion and makes contact with the first moving portion; A second contact portion, movable relative to the first moving portion, and in contact with the first moving portion; and Second Sports Department; The first contact portion and the second contact portion are arranged along a first axis; In the direction in which the first axis extends, the first moving part and the second moving part do not overlap.

2. The optical element driving mechanism as described in claim 1, characterized in that, in: The first support component also includes: A third contact portion is movable relative to the second moving portion and makes contact with the second moving portion; The line connecting the centers of the first contact portion and the second contact portion is defined as a first imaginary line; In the direction extending along a second axis, the first moving part and the second moving part at least partially overlap; In the direction extending along a third axis, the first moving part and the second moving part do not overlap; The first axis is not parallel to the second axis; The first axis is not parallel to the third axis; The second axis is not parallel to the third axis.

3. The optical element driving mechanism as described in claim 2, characterized in that, Also includes: The first force-applying element; A second force-applying element corresponds to the first force-applying element to generate a first bearing force; as well as A third force-applying element corresponds to the first force-applying element to generate a second bearing force; In the direction in which the second axis extends, the center of the second force-applying element is located between the first imaginary line and the center of the movable part; When viewed along the third axis, the center of the second force-applying element is located in the triangle formed by the centers of the first contact portion, the second contact portion, and the third contact portion; In the direction in which the second axis extends, the shortest distance between the center of the third force-applying element and the center of the movable part is different from the shortest distance between the center of the second force-applying element and the center of the movable part; In the direction in which the third axis extends, the shortest distance between the first force-applying element and the second force-applying element is different from the shortest distance between the first force-applying element and the third force-applying element; The first axis is perpendicular to the second axis; The first axis is perpendicular to the third axis; The second axis is perpendicular to the third axis.

4. The optical element driving mechanism as described in claim 3, characterized in that, In the direction in which the second axis extends, the shortest distance between the center of the third force-applying element and the center of the movable part is less than the shortest distance between the center of the second force-applying element and the center of the movable part; In the direction in which the third axis extends, the shortest distance between the first force-applying element and the second force-applying element is less than the shortest distance between the first force-applying element and the third force-applying element; In the direction in which the third axis extends, the second force-applying element and the third force-applying element do not overlap.

5. The optical element driving mechanism as described in claim 4, characterized in that, It also includes a first circuit element, a first connection element, and a second connection element, wherein: The first circuit element is electrically connected to the drive assembly; When viewed along the first axis, the second force-applying element is located between the first force-applying element and the first circuit element; The second force-applying element is connected to the first circuit element via the first connecting element; The first bonding element is made of metal; No electrical signal in the first circuit element passes through the second force-applying element; The second force-applying element is electrically independent of the drive assembly; The second force-applying element is made of metal. The third force-applying element is connected to the first circuit element via the second connecting element; The second bonding element is made of resin. The third force-applying element is made of metal. When viewed along the third axis, the area of ​​the second force-applying element is different from the area of ​​the third force-applying element; The maximum dimension of the second force-applying element on the third axis is different from the maximum dimension of the third force-applying element on the third axis.

6. The optical element driving mechanism as described in claim 1, characterized in that, The driver component includes: First coil; A first magnetic element having a surface facing the first coil and having a first pair of magnetic poles arranged along a first magnetic pole direction; A second magnetic element, adjacent to the first magnetic element and having a second pair of magnetic poles, arranged along a second magnetic pole direction; and A third magnetic element having a third pair of magnetic poles arranged along the direction of a third magnetic pole; The direction of the first magnetic pole is not parallel to the surface of the first magnetic element; The direction of the second magnetic pole is not parallel to the direction of the first magnetic pole. The second magnetic element is fixedly connected to the first magnetic element; The second magnetic element has one surface facing the first magnetic element; The directions of the first magnetic pole and the third magnetic pole are parallel and opposite.

7. The optical element driving mechanism as described in claim 6, characterized in that, Also includes: A first connecting element, wherein the first magnetic element is fixedly connected to the second magnetic element via the first connecting element; as well as A first reinforcing element, which is made of metal and corresponds to the first magnetic element; in: The first connecting element is located at the junction of the first magnetic element and the second magnetic element; The center of the first magnetic element is located between the first connecting element and the surface of the first magnetic element; The first connecting element connects to the first reinforcing element; The first connecting element is located in a first opening of the first reinforcing element; The first reinforcing element is made of a magnetically conductive material.

8. The optical element driving mechanism as described in claim 7, characterized in that, It also includes a second connecting element for connecting the first magnetic element; in: The first connecting element and the second connecting element are arranged in a direction parallel to the surface of the first magnetic element; The second connecting element is located in a second opening of the first reinforcing element; The second connecting element connects to the first reinforcing element; In a direction perpendicular to the surface of the first magnetic element, the second magnetic element at least partially overlaps with the first coil.

9. The optical element driving mechanism as described in claim 8, characterized in that, The driver component also includes: A third coil; and The seventh magnetic element corresponds to the third coil; The seventh magnetic element can move relative to the first magnetic element; When viewed along a direction perpendicular to the surface of the first magnetic element, the first magnetic element and the seventh magnetic element are located on different sides of the fixing part having a polygonal structure.

10. The optical element driving mechanism as described in claim 9, characterized in that, It also includes a position sensing component, a first circuit element, and a second force application element, wherein: The position sensing component is used to sense the movement of the optical element; The position sensing component includes a first position sensing element; The movable part and the fixed part are arranged along a first axis; When viewed along the first axis, the first position sensing element and the second force-applying element are arranged along a second axis; The first axis is perpendicular to the second axis; The first position sensing element is disposed on the first circuit element.

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