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 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 Art

[0002] With the development of technology, many current electronic devices (such as smart phones or digital cameras) have functions of taking pictures or videos. The use of these electronic devices is becoming more and more common, and they are developing towards a convenient, thin and light design direction to provide users with more choices.

[0003] The aforementioned electronic devices with functions of taking pictures or videos usually are provided with an optical element driving mechanism to drive an optical element (such as a lens) to move along an optical axis, so as to achieve 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 current trend of mobile devices is to have a smaller volume and higher durability. Therefore, how to effectively reduce the size of the optical element driving mechanism and improve its durability has become an important issue. Summary of the Invention

[0004] An object of the present invention is to provide an optical element driving mechanism to solve at least one of the above problems.

[0005] Embodiments of the present disclosure provide an optical element driving mechanism, including a movable part, a fixed part, and a driving component. The movable part is used to connect the optical element. The movable part can move relative to the fixed part. The driving component 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 component. The movable part can move relative to the fixed part in a first dimension via the first support component. The first support component 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. A connection line between 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 a direction in which the first axis extends, the first moving part and the second moving part do not overlap. In a direction in which a second axis extends, 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 includes a first biasing element, a second biasing element, and a third biasing element. The second biasing element corresponds to the first biasing element to generate a first abutting force. The third biasing element corresponds to the first biasing element to generate a second abutting force. In the direction of the extension of the second axis, the center of the second biasing element is located 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 observed along the main axis, the center of the second biasing element is located within the triangle formed by the centers of the first contact part, the second contact part, and the third contact part. In the direction of the extension of the second axis, the shortest distance between the center of the third biasing element and the center of the movable part is different from the shortest distance between the center of the second biasing element and the center of the movable part. In the direction of the extension of the first axis, the shortest distance between the first biasing element and the second biasing element is different from the shortest distance between the first biasing element and the third biasing element.

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

[0009] In some embodiments, in the direction of the extension of the second axis, the shortest distance between the center of the third biasing element and the center of the movable part is less than the shortest distance between the center of the second biasing element and the center of the movable part. In the direction of the extension of the first axis, the shortest distance between the first biasing element and the second biasing element is greater than the shortest distance between the first biasing element and the third biasing element. In the direction of the extension of the first axis, the second biasing element and the third biasing element do not overlap.

[0010] In some embodiments, the optical element driving mechanism further includes a first circuit element, a first bonding element, and a second bonding element. The first circuit element is electrically connected to the driving assembly. When observed along the main axis, the second biasing element is located between the first biasing element and the first circuit element. The second biasing element is connected to the first circuit element via the first bonding element. The first bonding element has a metal material. Any electrical signal in the first circuit element does not pass through the second biasing element. The second biasing element is electrically independent of the driving assembly. The second biasing element has a metal material. The third biasing element is connected to the first circuit element via the second bonding element. The second bonding element has a resin material. The third biasing element has a metal material. When observed along the first axis, the area of the second biasing element is different from the area of the third biasing element. The maximum dimension of the second biasing element along the first axis is different from the maximum dimension of the third biasing 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. The 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 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 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 magnetically permeable material.

[0013] In some embodiments, the optical element driving mechanism further includes a second connecting element that connects the first magnetic element. The arrangement directions of the first connecting element and the second connecting element are 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 and the first coil at least partially overlap.

[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 on different sides of a fixed portion having a polygonal structure.

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

[0016] The beneficial effects of the present invention are as follows. The special relative positions and size relationships of the components disclosed in the present disclosure can not only make the driving mechanism thinner in a specific direction and smaller as a whole, but also further improve the optical quality of the system (such as shooting quality or depth sensing accuracy, etc.) by matching different optical modules. Furthermore, a multi-shockproof system is achieved by using each optical module to greatly improve the anti-shake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that, in accordance with standard practices in the industry, various features are not shown to scale and are only for illustrative purposes. In fact, the dimensions of the components may be arbitrarily enlarged or reduced to clearly show the features of the present disclosure.

[0018] Figure 1A is a schematic diagram of an optical element driving mechanism.

[0019] Figure 1B is an exploded view of the optical element driving mechanism.

[0020] Figure 1C is a top view of the optical element driving mechanism.

[0021] Figure 2A is along Figure 1C sectional view taken along line A-A shown.

[0022] Figure 2B is along Figure 1C sectional view taken along line B-B shown.

[0023] Figure 3A 、 Figure 3B 、 Figure 3C is a top view of some components of the optical element driving mechanism.

[0024] Figure 3D is Figure 3C enlarged view of the region.

[0025] Figure 4 is a side view of some components of the optical element driving mechanism.

[0026] The reference numerals are as follows:

[0027] 1000: Optical element driving mechanism

[0028] 1100: Fixed part

[0029] 1110: Outer frame

[0030] 1120: Base

[0031] 1200: Movable part

[0032] 1210: Carrier seat

[0033] 1220: Frame

[0034] 1300: Driving component

[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 component

[0051] 1410: First moving part

[0052] 1420: Second moving part

[0053] 1431: First contact part

[0054] 1432: Second contact part

[0055] 1433: Third contact part

[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 bonding element

[0072] 1720: Second bonding element

[0073] 1900: Spindle

[0074] 1901: First axis

[0075] 1902: Second axis

[0076] 1903: Third axis

[0077] 1911: First imaginary line

[0078] 1920: Center

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

[0080] 1951, 1952: Maximum dimension

[0081] 1960: Region

[0082] 1962: Triangle

[0083] X, Y, Z: Coordinates Detailed implementation manner

[0084] The following discloses many different implementation methods or examples for implementing the different features provided. The following describes embodiments of specific components and their arrangements to illustrate the present disclosure. Of course, these embodiments are only for illustration and should not limit the scope of the present disclosure. For example, in the specification, it is mentioned that a first feature component is formed on a second feature component, which may include an embodiment where the first feature component and the second feature component are in direct contact. Additionally, it may also include an embodiment where there are other features between the first feature component and the second feature component. In other words, the first feature component and the second feature component are not in direct contact.

[0085] In addition, repeated reference numerals or labels may be used in different embodiments. These repetitions are only for simplicity and clarity in describing the present disclosure and do not represent a specific relationship between the different embodiments and / or structures being discussed. Further, forming, connecting to, and / or coupling to another feature component above another feature component in the present disclosure may include embodiments where the feature components are formed in direct contact, and may also include embodiments where additional feature components may be formed to insert between the above-mentioned feature components, such that the above-mentioned feature components may not be in direct contact. Moreover, spatial-related terms may be used, such as "vertical", "above", "on", "under", "bottom", and similar terms (such as "downwardly", "upwardly", etc.). These spatial-related terms are for facilitating the description of the relationship between one (or some) element or feature and another (or some) element or feature in the drawings. These spatial-related terms are intended to cover different orientations of the device including the features.

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

[0087] Furthermore, ordinal numbers such as "first", "second", etc. used in the specification and claims to modify the elements of the claims do not themselves imply or represent that the claimed element has any previous ordinal number, nor do they represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of multiple ordinal numbers is only to clearly distinguish one claimed element having a certain name from another claimed element having the same name.

[0088] In addition, in some embodiments of the present disclosure, terms related to joining and connection, such as "connect" and "interconnect", unless specifically defined, may refer to two structures being in direct contact, or may also refer to two structures not being in direct contact, with other structures disposed between these two structures. And these terms related to joining and connection may also include cases where both structures are movable, or both structures are fixed.

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

[0090] As Figures 1A to 1C shown, the optical element driving mechanism 1000 mainly may include a fixed part 1100 (including an outer frame 1110 and a base 1120), a movable part 1200 (including a carrier 1210 and 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 the main axis 1900 for driving an optical element (not shown) to move.

[0091] In some embodiments, the aforementioned optical element may be disposed in the carrier 1210 and may 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 here is not limited to elements related to visible light, and elements related to invisible light (such as infrared light, ultraviolet light, etc.) may also be included in the present disclosure.

[0092] In some embodiments, the outer frame 1110 and the base 1120 of the fixing portion 1100 can be combined with each other to form the housing of the optical element driving mechanism 1000, and other elements of the optical element driving mechanism 1000 can be disposed in the housing formed by the outer frame 1110 and the base 1120 to protect other elements. For example, the base 1120 can be fixedly connected to the outer frame 1110. In some embodiments, additional circuits can be buried in the base 1120 to allow the elements in the optical element driving mechanism 1000 to be electrically connected to other elements.

[0093] In some embodiments, the carrier 1210 and the frame 1220 of the movable portion 1200 can be disposed in the fixing portion 1100 and can move relative to the fixing portion 1100. That is, the carrier 1210 and the frame 1220 are movably connected to the fixing portion 1100. In addition, the carrier 1210 can also move relative to the frame 1220.

[0094] In some embodiments, the driving assembly 1300 can be used to drive the carrier 1210 and the frame 1220 to move relative to the fixing portion 1100 to achieve the effect of auto focus (AF) or optical image stabilization (OIS).

[0095] In some embodiments, the first circuit element 1500 can be, for example, a printed circuit board (PCB), and can be disposed on the frame 1220, for example, fixed to the frame 1220 by an adhesion method, to electrically connect other elements (such as the driving assembly 1300) in the optical element driving mechanism 1000 and an external device, thereby providing an electrical signal. Thus, the movement of the movable portion 1200 in the X, Y, and Z axes can be controlled, and further the functions of auto focus (AF) or optical image stabilization (OIS) can be realized. The driving assembly 1300 can be fixed to the first circuit element 1500 by an adhesion method.

[0096] In some embodiments, the elastic element 1600 may be made of a metal material, for example, and may be disposed between the movable part 1200 and the fixed part 1100 to movably connect the movable part 1200 to the fixed part 1100, thereby allowing the carrier 1210 and the optical element disposed on the carrier 1210 to move relative to the fixed part 1100. In addition, the elastic element 1600 may also be electrically connected to the circuit embedded in the base 1120 to electrically connect to other electronic components in the optical element driving mechanism 1000. For example, the elastic element 1600 may include a reed perpendicular to the Z-axis and a suspension wire parallel to the Z-axis. The reed may be disposed on one side of the movable part 1200, and the suspension wire may span across the movable part 1200 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] Figure 2A is the cross-sectional view taken along Figure 1C section line A-A, and Figure 2B is the cross-sectional view taken along Figure 1C section line B-B. Figure 3A , Figure 3B , Figure 3C are top views of some components of the optical element driving mechanism 1000, in which different components are respectively shown to better describe the positional relationship between the components. As Figures 2A to 3C shown, the driving assembly 1300 of the optical element driving mechanism 1000 may 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. Among them, 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, while 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, thereby achieving 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. In addition, the first coil 1315 can correspond to the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 (for example, at least partially overlapping on the Z axis), while the second coil 1325 can correspond to the fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360 (for example, at least partially overlapping on the Z axis), so as to generate electromagnetic driving forces in different directions to drive the frame 1220 to move relative to the base 1120, achieving the effect of optical anti-shake. In addition, the third coil 1335 can be disposed on the frame 1220, while the seventh magnetic element 1370 can be disposed on the carrier 1210 to drive the carrier 1210 to move relative to the frame 1220, thereby achieving the function of autofocus. It should be noted that the positions of the foregoing magnetic elements and coils are only examples, and their positions can also be interchanged to achieve similar effects, depending on the design requirements.

[0099] In some embodiments, as Figure 2A shown, the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 can be arranged in sequence 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 can respectively have a first magnetic pole pair, a second magnetic pole pair, and a third magnetic pole pair (a pair of S poles and N poles), and can be respectively arranged along the first magnetic pole direction 1312, the second magnetic pole direction 1322, and the third magnetic pole direction 1332. The first magnetic pole direction 1312, the second magnetic pole direction 1322, and the third magnetic pole direction 1332 can face different directions. For example, the first magnetic pole direction 1312 is not parallel to the second magnetic pole direction 1322, and the second magnetic pole direction 1322 is not parallel to the third magnetic pole direction 1332. In addition, the first magnetic pole direction 1312 and the third magnetic pole direction 1332 can be parallel to each other but opposite, for example, facing the -Z direction and the +Z direction respectively.

[0101] With this design, the magnetic flux density of the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330 as a whole can be enhanced on the side close to the first coil 1315, thereby increasing the magnitude of the driving force. In addition, 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 a metal material and may have a first opening 1511 and a second opening 1512. The first connecting element 1531 may be provided through the first opening 1511 to fixedly connect the second magnetic element 1320 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 the melted part generated by soldering or welding. That is, the first connecting element 1531 may 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 connect the first reinforcing element 1510 to fixedly connect 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 provided on the opposite surface of the first magnetic element surface 1311, that is, the center of the first magnetic element 1310 is located between the first connecting element 1531 and the first magnetic element surface 1311. In some embodiments, welding or fusion welding may also be performed between the interface 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 to the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330.

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

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

[0106] For example, the second reinforcing element 1520 may be disposed on the fourth magnetic element 1340, fifth magnetic element 1350, and sixth magnetic element 1360. The fourth magnetic element 1340, fifth magnetic element 1350, and sixth magnetic element 1360 may be connected by a third connecting element 1533. The third connecting element 1533 may be disposed in the second reinforcing element 1520, and the second reinforcing element 1520 and the fourth magnetic element 1340 and sixth magnetic element 1360 may be further connected by a fourth connecting element 1534. The second coil 1325 and the corresponding fourth magnetic element 1340, fifth magnetic element 1350, and sixth magnetic element 1360 may be used to drive the frame 1220 to move relative to the base 1120 along the Y axis. Thus, driving on 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 may be made of a magnetically conductive material.

[0107] In some embodiments, the third coil 1335 and the seventh magnetic element 1370 and the first coil 1315 may be disposed on different sides of the optical element driving mechanism 1000, for example, on both sides of the carrier 1210. Specifically, when observing along the direction perpendicular to the surface 1311 of the first magnetic element (when observing 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 along the Z axis, thereby achieving the function of auto-focusing. That is to say, 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 overlapping on the X axis.

[0109] In order to prevent the moving part 1200 from flipping during movement, 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 integrally formed structure, and a second force-applying element 1442 is 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 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, thereby stabilizing 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 include, for example, a magnetically permeable material and can include a metallic material.

[0110] In some embodiments, a position sensing assembly can be disposed in the optical element driving mechanism 1000 to sense the positions of the carrier 1210 and the frame 1220 relative to the fixed part 1100, thereby sensing the movement of the optical element. For example, as Figure 2A , Figure 2B , Figure 3B , Figure 3C shown, the position sensing assembly can include, for example, 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 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.

[0111] In some embodiments, the first position sensing element 1530 may be disposed, for example, in the third coil 1335 to sense the magnetic field of the seventh magnetic element 1370, so as to obtain the positions of the seventh magnetic element 1370 and the carrier 1210. The second position sensing element 1540 may be disposed, for example, in the first coil 1315 to sense the magnetic fields of the first magnetic element 1310, the second magnetic element 1320, and the third magnetic element 1330, so as to obtain the positions of the first magnetic element 1310, the second magnetic element 1320, the third magnetic element 1330, and the frame 1220 relative to the fixed portion 1100. The third position sensing element 1550 may be disposed, for example, in the second coil 1325 to sense the magnetic fields of the fourth magnetic element 1340, the fifth magnetic element 1350, and the sixth magnetic element 1360, so as to obtain the positions 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 magnetoresistance effect sensor (MR Sensor), a giant magnetoresistance effect sensor

[0113] (Giant Magnetoresistance Effect Sensor, GMR Sensor), a tunneling magnetoresistance effect sensor (TMR Sensor), or a fluxgate sensor.

[0114] In some embodiments, as Figure 3C shown, in the direction of extension of 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 portion 1200 may be different from the shortest distance 1931 between the center of the second force applying element 1442 and the center 1920 of the movable portion 1200. For example, the shortest distance 1932 between the center of the third force applying element 1443 and the center 1920 of the movable portion 1200 may be less than the shortest distance 1931 between the center of the second force applying element 1442 and the center 1920 of the movable portion 1200.

[0115] In addition, Figure 3D is Figure 3C an enlarged view of the region 1960. As Figure 3DAs shown, in the direction in which the third axis 1903 extends (X direction), the shortest distance 1941 between the first biasing element 1441 and the second biasing element 1442 is different from the shortest distance 1942 between the first biasing element 1441 and the third biasing element 1443. For example, the shortest distance 1941 between the first biasing element 1441 and the second biasing element 1442 may be less than the shortest distance 1942 between the first biasing element 1441 and the third biasing element 1443. In addition, the maximum dimension 1951 of the second biasing element 1442 on the third axis 1903 is different from the maximum dimension 1952 of the third biasing element 1443 on the third axis 1903. For example, the maximum dimension 1951 of the second biasing element 1442 on the third axis 1903 may be less than the maximum dimension 1952 of the third biasing element 1443 on the third axis 1903. In some embodiments, when viewed along the main axis 1900, the second biasing element 1442 is located between the first biasing element 1441 and the first circuit element 1500. In addition, the first position sensing element 1530 and the second biasing 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 biasing element 1442 and the third biasing 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 signals in the first circuit element 1500 do not pass through the second biasing element 1442 (except for grounding). That is, the second biasing element 1442 and the driving assembly 1300 may be electrically independent of each other to avoid signal interference and also avoid short circuits. The second bonding element 1720 may include, for example, a non-conductive material, such as resin, photo-curing adhesive, thermosetting adhesive, moisture-curing adhesive, AB glue (components such as acrylic, epoxy, polyurethane, etc.), but is not limited thereto.

[0117] Figure 4 is a side view of some elements of the optical element driving mechanism 1000. As Figure 4 shown, when viewed along the third axis 1903 (X axis), the second biasing element 1442 and the third biasing element 1443 do not overlap, and the third coil 1335 also does not overlap with the second biasing element 1442. Thus, the size in the X axis can be reduced to achieve miniaturization. In addition, when viewed along the third axis 1903, the area of the second biasing element 1442 is different from the area of the third biasing element 1443. For example, the area of the second biasing element 1442 may be less than the area of the third biasing element 1443. Since the second biasing element 1442 has a smaller size, the bearing force generated by it will not overly affect the normal operation of the optical element driving mechanism 1000.

[0118] In some embodiments, as Figure 4 shown, the carrier base 1210 can be movably connected to the frame 1220 through the first support assembly 1400. For example, the first support assembly 1400 can 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 can be part of the frame 1220, and the second contact part 1432 can be part of the base 1120.

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

[0120] As Figure 4 shown, the first contact part 1431 and the second contact part 1432 can be arranged along the first axis 1901, and the connection line of the centers of the first contact part 1431 and the second contact part 1432 can be defined as the first imaginary line 1911. In some embodiments, in the extending direction of the first axis 1901 (Z direction), the first moving part 1410 and the second moving part 1420 do not overlap. In addition, in the extending direction of the second axis 1902 (Y direction), the first moving part 1410 and the second moving part 1420 at least partially overlap. In the extending direction of the third axis 1903 (X direction), the first moving part 1410 and the second moving part 1420 do not overlap. In some embodiments, the first axis 1901, the second axis 1902, and the third axis 1903 are not parallel to each other, for example, can be perpendicular to each other. By this setting method, the size of the optical element driving mechanism 1000 in a specific direction can be reduced to achieve miniaturization.

[0121] In some embodiments, in the extending direction of the second axis 1902, the center of the second biasing element 1442 is located between the first imaginary line 1911 and the center 1920 of the movable part 1200. In addition, as Figure 4As shown, when observed along the third axis 1903, the center of the second force - applying element 1442 is located within a triangle 1962 formed by the centers of the first contact portion 1431, the second contact portion 1432, and the third contact portion 1433. Thereby, the torque caused by the second force - applying element 1442 to the movable portion 1200 can be reduced, so as to avoid unwanted flipping of the movable portion 1200 when the optical element driving mechanism 1000 is in motion, and further improve the driving accuracy.

[0122] In summary, the embodiments of the present disclosure provide an optical element driving mechanism, including a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect an optical element. The movable portion can move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion. Thereby, effects such as autofocus, optical image stabilization, and zooming can be achieved, and miniaturization can also be achieved.

[0123] The special relative positions and size relationships of the various elements disclosed in the present disclosure can not only make the driving mechanism thinner in a specific direction and miniaturize the whole, but also further improve the optical quality of the system (such as shooting quality or depth - sensing accuracy, etc.) by cooperating with different optical modules, and further utilize each optical module to achieve a multiple anti - vibration system to greatly improve the anti - vibration effect.

[0124] Although the embodiments of the present disclosure and their advantages have been disclosed above, it should be understood that those skilled in the art can make changes, substitutions, and modifications without departing from the spirit and scope of the present disclosure. In addition, the protection scope of the present disclosure is not limited to the processes, machines, manufactures, compositions of matter, devices, methods, and steps in the specific embodiments described in the specification. Any person skilled in the art can understand the processes, machines, manufactures, compositions of matter, devices, methods, and steps developed currently or in the future from the disclosed content of the present disclosure, as long as they can perform substantially the same functions or obtain substantially the same results as those in the embodiments described herein, they can be used according to the present disclosure. Therefore, the protection scope of the present disclosure includes the above - mentioned processes, machines, manufactures, compositions of matter, devices, 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, comprising: A movable portion, used to connect an optical element; a fixed portion, the movable portion being 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 as claimed in claim 1, further comprising a first supporting assembly, wherein: The movable portion can move relative to the fixed portion in a first dimension via the first supporting assembly; The first support assembly comprises:

1. First Movement Department; a first contact portion, movable relative to the first moving portion and contacting the first moving portion; a second contact portion, movable relative to the first moving portion and contacting the first moving portion; a second moving part; and a third contact portion, movable relative to the second moving portion and contacting the second moving portion; A line connecting the centers of the first contact portion and the second contact portion is defined as a first imaginary line; 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; In a direction in which a second axis extends, the first moving part and the second moving part at least partially overlap; In a direction in which a third axis extends, 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 according to claim 2, further comprising: a first force applying element; A second force-applying element, corresponding to the first force-applying element to generate a first bearing force; as well as a third force-applying element, corresponding 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 portion; When viewed along the third axis, the center of the second force-applying element is located in a 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 portion is different from the shortest distance between the center of the second force-applying element and the center of the movable portion; 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 according to claim 3, wherein: 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 portion is smaller than the shortest distance between the center of the second force-applying element and the center of the movable portion; 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 smaller 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 claimed in claim 4, further comprising a first circuit element, a first connecting element, and a second connecting element, wherein: The first circuit element is electrically connected to the driving component; 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; 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 from the driving 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 material; 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 along the third axis is different from the maximum dimension of the third force applying element along the third axis.

6. The optical element driving mechanism as claimed in claim 1, wherein the driving assembly comprises: a first coil; A first magnetic element having a first magnetic element surface facing the first coil and having a first magnetic pole pair arranged along a first magnetic pole direction; a second magnetic element, adjacent to the first magnetic element and having a second magnetic pole pair arranged along a second magnetic pole direction; as well as a third magnetic element having a third magnetic pole pair arranged along a third magnetic pole direction; The first magnetic pole direction is not parallel to the surface of the first magnetic element; 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 toward the first magnetic element; The first magnetic pole direction and the third magnetic pole direction are parallel and opposite.

7. The optical element driving mechanism according to claim 6, further comprising: a first connecting element, the first magnetic element being fixedly connected to the second magnetic element via the first connecting element; as well as a first reinforcing element, made of metal and corresponding 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 is connected 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 magnetic conductive material.

8. The optical element driving mechanism as claimed in claim 7, further comprising a second connecting element connected to the first magnetic element; in: The arrangement directions of the first connecting element and the second connecting element are 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 is connected to the first reinforcing element; In a direction perpendicular to a 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 claimed in claim 8, wherein the driving assembly further comprises: a third coil; as well as a seventh magnetic element corresponding 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 portion having a polygonal structure.

10. The optical element driving mechanism as claimed in claim 9, further comprising a position sensing component, a first circuit element, and a second force applying element, wherein: The position sensing component is used to sense the movement of the optical element; The position sensing assembly includes a first position sensing element; The movable portion and the fixed portion 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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