Optical element driving mechanism

Abstract

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

Description

Technical Field

[0001] This disclosure relates to an optical element driving mechanism. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones or digital cameras) have the function of taking pictures or recording videos. The use of these electronic devices is becoming more and more common, and they are developing towards convenient and thinner designs to provide users with more choices.

[0003] The aforementioned electronic devices with photographic or video recording functions typically include an optical element driving mechanism to drive optical elements (such as a lens) to move along the optical axis, thereby achieving autofocus (AF) or optical image stabilization (OIS). Light can pass through the aforementioned optical elements and form an image on the photosensitive element. However, the current trend in mobile devices is to achieve smaller size and higher durability; therefore, effectively reducing the size of the optical element driving mechanism and improving its durability has become an important issue. Utility Model Content

[0004] The purpose of this disclosure is to provide an optical element driving mechanism to solve at least one of the above-mentioned problems.

[0005] This disclosure provides an optical element driving mechanism, including a first movable part, a fixed part, and a driving assembly. The first movable part is used to connect to a first optical element. The first movable part is movable relative to the fixed part. The driving assembly is used to drive the first movable part to move relative to the fixed part.

[0006] In some embodiments, the optical element driving mechanism further includes a second movable part corresponding to the driving assembly. The second movable part includes a first body having a dielectric material and a first metal component having a metal material and disposed on the first body. The driving assembly includes a first circuit assembly, and the first metal component corresponds to the first circuit assembly.

[0007] According to one embodiment of the present invention, a first amplifying element is further included, located between the first circuit assembly and the first metal assembly; wherein: the first amplifying element is made of metal; the first amplifying element and the first metal assembly are made of different materials; and the magnetic permeability of the first amplifying element is greater than that of the first metal assembly.

[0008] According to one embodiment of the present invention, it further includes a first connecting element that directly contacts the first amplifying element; wherein: the first connecting element directly contacts the first body; the first connecting element directly contacts the first circuit assembly; the first connecting element directly contacts the first metal assembly; the first metal assembly has a first receiving portion for receiving the first amplifying element; the first connecting element is at least partially received in the first receiving portion.

[0009] According to one embodiment of the present invention, a first electrical connection element is further included, wherein: the second movable part further includes a second metal component, which is made of metal, disposed on the first body and electrically connected to the drive component; the first circuit component has a plate-like structure; in a first direction parallel to the first circuit component, the first metal component and the second metal component at least partially overlap; the second metal component includes a first electrical contact and is connected to the drive component; in the first direction, the first electrical connection element and the first metal component at least partially overlap; the first electrical connection element is disposed at the first electrical contact.

[0010] According to one embodiment of the present invention, it further includes: a second circuit assembly for connecting an external module; and a third circuit assembly for connecting the external circuit; wherein: the second circuit assembly includes a first connecting portion and a second connecting portion; a gap exists between the second connecting portion and the first connecting portion; when viewed along a main axis, the optical element driving mechanism has a polygonal structure and includes a first side; when viewed along the main axis, the first connecting portion and the second connecting portion are located on the first side; the fixing portion includes an outer frame and a base; the outer frame and the base are arranged along the main axis; when viewed along the main axis, the first connecting portion and the second connecting portion are at least partially exposed in the outer frame; the second circuit assembly is movable relative to the second metal assembly; the second circuit assembly is electrically connected to the second metal assembly; the second circuit assembly is electrically connected to the external circuit via the third circuit assembly; and the second metal assembly is electrically connected to the external circuit via the third circuit assembly.

[0011] According to one embodiment of the present invention, the second circuit assembly further includes: a third connecting portion; and a fourth connecting portion having a gap with the third connecting portion; when viewed along the main axis, the third connecting portion and the fourth connecting portion are located on the first side; when viewed along the main axis, the third connecting portion and the fourth connecting portion are at least partially exposed in the outer frame; the first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion are arranged in the first direction.

[0012] According to one embodiment of the present invention, a first stop element is further included to limit the range of motion of the first movable part; wherein: the first stop element is fixedly disposed on the first body; the first stop element has a dielectric material; the first stop element and the first body have different materials; the Young's modulus of the first stop element is lower than that of the first body; the first stop element has a first groove corresponding to the third circuit assembly; the first stop element is spaced apart from the third circuit assembly.

[0013] According to one embodiment of the present invention, the second movable part has a second groove corresponding to the third circuit assembly; the second groove is spaced apart from the third circuit assembly; the first groove is continuously connected to the second groove; when viewed along the main axis, the optical element driving mechanism has a polygonal shape and includes a first corner; when viewed along the main axis, the first groove is located at the first corner; when viewed along the main axis, the second groove is located at the first corner.

[0014] According to one embodiment of the present invention, it further includes: a second stop element for restricting the movement of the optical element; a third metal component, wherein the second stop element is disposed on the third metal component; and a second body, wherein the third metal component is at least partially disposed on the second body; wherein: the second stop element has a dielectric material; the second body has a dielectric material; the second stop element and the second body have different materials; the Young's modulus of the second stop element is lower than the Young's modulus of the second body; the first stop element and the second stop element have the same material; the first body and the second body have the same material.

[0015] The beneficial effects of this disclosure are that the special relative positions and size relationships of the components disclosed herein can not only enable the drive mechanism to achieve thinning in a specific direction and miniaturization of the whole, but also further improve the optical quality of the system (such as shooting quality or depth sensing accuracy) by matching different optical modules, and further utilize each optical module to achieve a multi-anti-shake system to greatly improve the anti-shake effect. Attached Figure Description

[0016] The embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that, in accordance with industry standard practice, many features are not shown to scale and are for illustrative purposes only. In fact, the dimensions of the components may be arbitrarily enlarged or reduced to clearly demonstrate the features of this disclosure.

[0017] Figure 1A This is a schematic diagram of the optical element driving mechanism.

[0018] Figure 1B This is an exploded view of the optical element drive mechanism.

[0019] Figure 1C This is a top view of the optical element drive mechanism.

[0020] Figure 2A It is along Figure 1C The cross-sectional view is shown by line segment AA.

[0021] Figure 2B It is along Figure 1C The cross-sectional view is shown by line segment BB.

[0022] Figure 2C It is along Figure 1C The cross-sectional view shown by line segment CC.

[0023] Figure 3A , Figure 3B , Figure 3C This is a schematic diagram showing the components of the optical element drive mechanism when viewed from different directions.

[0024] Figure 4A , Figure 4B This is a schematic diagram of some components of the optical element drive mechanism when viewed from different directions.

[0025] Figure 5A , Figure 5B , Figure 5C This is a schematic diagram of some components of the optical element drive mechanism when viewed from different directions.

[0026] Figure 6 This is a top view of some components of the optical element drive mechanism.

[0027] Figure 7 This is a schematic diagram of some components of the optical element drive mechanism.

[0028] Figure 8 This is a schematic diagram of the base.

[0029] Figure 9A This is a schematic diagram of some components of the optical element drive mechanism.

[0030] Figure 9B This is a schematic diagram of some components of the optical element drive mechanism.

[0031] The attached figures are labeled as follows:

[0032] 1000: Optical element drive mechanism

[0033] 1100: Fixing part

[0034] 1110: Outer frame

[0035] 1120: Base

[0036] 1121: Second Body

[0037] 1122: Third Metal Component

[0038] 1131: First Corner

[0039] 1132: Second Corner

[0040] 1133: The Third Corner

[0041] 1134: The Fourth Corner

[0042] 1135: First side

[0043] 1141: First stop element

[0044] 1142: First Groove

[0045] 1151: First damping element

[0046] 1152: Second damping element

[0047] 1161: First Positioning Unit

[0048] 1162: Second Positioning Unit

[0049] 1163: Third Positioning Unit

[0050] 1171: First positioning element

[0051] 1172: Second positioning element

[0052] 1173: Third positioning element

[0053] 1174: Fourth positioning element

[0054] 1175: Fifth positioning element

[0055] 1176: Sixth positioning element

[0056] 1177: Connecting part

[0057] 1210: First Activities Department

[0058] 1220: Second Activities Department

[0059] 1221:First body

[0060] 1222: First Metal Component

[0061] 1223: First Amplifying Component

[0062] 1224: First connecting element

[0063] 1225: First Reception Section

[0064] 1226: Second metal component

[0065] 1227: First electrical connection element

[0066] 1228: First electrical contact

[0067] 1229: Second Groove

[0068] 1231: First trench

[0069] 1232: Second trench

[0070] 1300: Driver Components

[0071] 1301: First coil

[0072] 1302: Second coil

[0073] 1303: Third coil

[0074] 1304: Fourth coil

[0075] 1311: First magnetic element

[0076] 1312: Second magnetic element

[0077] 1313: Third magnetic element

[0078] 1314: Fourth magnetic element

[0079] 1315: First electrical connection part

[0080] 1316: Second electrical connection part

[0081] 1321: First reinforcing element

[0082] 1322: Second reinforcing element

[0083] 1323: Third reinforcing element

[0084] 1331: First protective element

[0085] 1332: Second protective element

[0086] 1341: First Electronic Component

[0087] 1342: Second electronic component

[0088] 1343: Third electronic component

[0089] 1350: Third Circuit Component

[0090] 1400: Support Components

[0091] 1410: First intermediate element

[0092] 1411: First Beginning

[0093] 1412: First Terminal

[0094] 1420: Second intermediate element

[0095] 1421: Second Beginning

[0096] 1422: Second Terminal

[0097] 1500: First Circuit Component

[0098] 1600: Second circuit component

[0099] 1610: First connecting part

[0100] 1620: Second connecting part

[0101] 1630: Third connecting part

[0102] 1640: Fourth connecting part

[0103] 1710: First Support Section

[0104] 1720: Second Support Section

[0105] 1730: First Corresponding Part

[0106] 1731: First contact surface

[0107] 1732: Second contact surface

[0108] 1733: Third contact surface

[0109] 1734: Fourth contact surface

[0110] 1735: First connecting surface

[0111] 1736: Second connecting surface

[0112] 1737: Third connecting surface

[0113] 1740: Second Corresponding Part

[0114] 1741: First Buffer Surface

[0115] 1742: Second Buffer Surface

[0116] 1743: Protrusion

[0117] 1744: Fifth Contact Surface

[0118] 1900: Spindle

[0119] 1901: First Axis

[0120] 1902: Second Axis

[0121] 1903: Third Axis

[0122] 1911, 1912: Length

[0123] 1913, 1914: Spacing

[0124] 1921, 1922, 1923, 1924, 1941, 1942: Maximum size

[0125] 1931, 1932: Shortest distance

[0126] X, Y, Z: Coordinates Detailed Implementation

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] Furthermore, in some embodiments of this disclosure, terms such as "connection" and "interconnection," unless specifically defined, may refer to two structures in direct contact, or they may refer to two structures that are not in direct contact, with other structures disposed between them. Moreover, these terms regarding joining and connection may also include cases where both structures are movable or both structures are fixed.

[0132] This disclosure provides an optical element driving mechanism for driving optical elements to move. For example, Figure 1A This is a schematic diagram of the optical element drive mechanism 1000. Figure 1B This is an exploded view of the optical element drive mechanism 1000. Figure 1C This is a top view of the optical element drive mechanism 1000. Figure 2A It is along Figure 1C The cross-sectional view is shown by line segment AA. Figure 2B It is along Figure 1C The cross-sectional view is shown by line segment BB. Figure 2C It is along Figure 1C The cross-sectional view shown by line segment CC.

[0133] like Figures 1A to 2C As shown, the optical element driving mechanism 1000 mainly includes a fixed part 1100 (including an outer frame 1110 and a base 1120) arranged along the main axis 1900, a first movable part 1210, a second movable part 1220, a driving assembly 1300, a first intermediate element 1410, a second intermediate element 1420, a first circuit assembly 1500, and a second circuit assembly 1600, for driving an optical element (not shown) to move.

[0134] In some embodiments, the aforementioned optical elements may be disposed in the first movable part 1210, and may be, for example, lenses, mirrors, prisms, reflective polished surfaces, optical coatings, beam splitters, apertures, liquid lenses, image sensors, camera modules, ranging modules, etc. It should be noted that the definition of optical elements here is not limited to elements related to visible light; elements related to invisible light (e.g., infrared light, ultraviolet light) may also be included in this disclosure.

[0135] 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.

[0136] In some embodiments, the first movable portion 1210 and the second movable portion 1220 of the movable portion 1200 may be disposed in the fixed portion 1100 and may be movable relative to the fixed portion 1100. That is, the first movable portion 1210 and the second movable portion 1220 are movably connected to the fixed portion 1100. In addition, the first movable portion 1210 may also be movable relative to the second movable portion 1220.

[0137] In some embodiments, the drive assembly 1300 can be used to drive the first movable part 1210 and the second movable part 1220 to move relative to the fixed part 1100 to achieve the effects of autofocus (AF) or optical image stabilization (OIS). In some embodiments, the first movable part 1210 can move along the Z-axis, while the second movable part 1220 can move along the X-axis and Y-axis.

[0138] In some embodiments, the first circuit assembly 1500 may be, for example, a printed circuit board (PCB), disposed on the second movable part 1220, for example, by adhesive bonding, for electrically connecting other components in the optical element drive mechanism 1000 (e.g., drive assembly 1300) and external devices, thereby providing electrical signals. Thus, the movement of the movable part 1200 in the X, Y, and Z axes can be controlled, thereby enabling autofocus (AF) or optical image stabilization (OIS) functions. The drive assembly 1300 may be adhesively bonded to the first circuit assembly 1500.

[0139] In some embodiments, the second circuit assembly 1600 may include, for example, a metallic material and may be disposed between the movable portion 1200 and the fixed portion 1100 to movably connect the movable portion 1200 to the fixed portion 1100, thereby allowing the first movable portion 1210 and the optical element disposed on the first movable portion 1210 to move relative to the fixed portion 1100. In addition, the second circuit assembly 1600 may also be electrically connected to circuitry embedded in the base 1120 (e.g., the third metal assembly 1122 described later) to electrically connect to other electronic components in the optical element drive mechanism 1000. For example, the second circuit assembly 1600 may include a reed perpendicular to the Z-axis (e.g., the first connecting portion 1610, the second connecting portion 1620, the third connecting portion 1630, and the fourth connecting portion 1640 described later), the reed being disposed on one side of the movable portion 1200 to transmit electrical signals. In some embodiments, the second circuit assembly 1600 may be electrically connected to an external module (not shown, such as an aperture, shutter, or other optically related module), and this external module may be disposed on the first movable part 1210 to move together with the first movable part 1210 and the optical elements.

[0140] Figure 3A , Figure 3B , Figure 3C This is a schematic diagram of some components of the optical element drive mechanism 1000 when viewed from different directions. The aforementioned outer frame 1110 is mainly omitted to better show the other components. For example... Figures 3A to 3CAs shown, the fixing part 1100 (e.g., base 1120) may have a polygonal shape and may have a first corner 1131, a second corner 1132, a third corner 1133, and a fourth corner 1134. At the first corner 1131, a first damping element 1151 and a second damping element 1152 may be disposed, for example, between the base 1120 and the second movable part 1220, and may directly contact the base 1120 and the second movable part 1220. This can absorb vibrations during the movement of the first movable part 1210 or the second movable part 1220 to achieve better optical effects. In some embodiments, the first damping element 1151 and the second damping element 1152 may, for example, comprise a gel. In some embodiments, the first damping element 1151 and the second damping element 1152 may also be disposed at the second corner 1132, the third corner 1133, and / or the fourth corner 1134, depending on design requirements.

[0141] In some embodiments, such as Figure 3B As shown, when viewed along the main axis 1900, the base 1120 may have a first side 1135 between the third corner 1133 and the fourth corner 1134. The second circuit assembly 1600 may include a first connecting portion 1610, a second connecting portion 1620, a third connecting portion 1630, and a fourth connecting portion 1640, disposed on the first side 1135 and arranged in a first direction (e.g., the Y direction). The first connecting portion 1610, the second connecting portion 1620, the third connecting portion 1630, and the fourth connecting portion 1640 may have gaps between them to avoid interference between their electrical signals. In some embodiments, such as Figure 1C As shown, when viewed along the main axis 1900, the first connecting portion 1610, the second connecting portion 1620, the third connecting portion 1630, and the fourth connecting portion 1640 are at least partially exposed in the outer frame 1110, thereby allowing an external module (not shown) to be mounted on the outer frame 1110 and electrically connected to the optical element drive mechanism 1000 via the first connecting portion 1610, the second connecting portion 1620, the third connecting portion 1630, and the fourth connecting portion 1640.

[0142] A first stop element 1141 may be provided at a corner of the optical element driving mechanism 1000 to limit the range of motion of the first movable part 1210 and the second movable part 1220. For example, the second movable part 1220 may include a first body 1221, and the first stop element 1141 may be fixedly disposed on the first body 1221. The first body 1221 and the first stop element 1141 may include dielectric materials, and the first body 1221 and the first stop element 1141 may include different materials. For example, the first body 1221 may include plastic, and the first stop element 1141 may include rubber. In some embodiments, the Young's modulus of the first stop element 1141 is lower than that of the Young's modulus of the first body 1221, thereby absorbing vibrations when the first movable part 1210 and the second movable part 1220 collide with other components.

[0143] Figure 4A , Figure 4B This is a schematic diagram of some components of the optical element drive mechanism 1000 when viewed from different directions, which mainly shows the positional relationship of the second active part 1220, the first intermediate element 1410, and the second intermediate element 1420. Figure 5A , Figure 5B , Figure 5C This is a schematic diagram of some components of the optical element drive mechanism 1000 when viewed from different directions, which mainly shows the positional relationship of the first active part 1210, the first intermediate element 1410, and the second intermediate element 1420.

[0144] like Figure 2C , Figure 3B , Figure 4A , Figure 4B , Figure 5A , Figure 5B As shown, the second movable part 1220 may include a first support part 1710 and a second support part 1720, while the first movable part 1210 may include a first corresponding part 1730 and a second corresponding part 1740. The first intermediate element 1410, the second intermediate element 1420, the first support part 1710, the second support part 1720, the first corresponding part 1730, and the second corresponding part 1740 may be collectively referred to as the support assembly 1400, and the first movable part 1210 may move relative to the fixed part 1100 via the support assembly 1400.

[0145] In some embodiments, the first support portion 1710 and the first corresponding portion 1730 may correspond to the first intermediate element 1410, while the second support portion 1720 and the second corresponding portion 1740 may correspond to the second intermediate element 1420. For example, the first support portion 1710 and the first corresponding portion 1730 may directly contact the first intermediate element 1410, and the first intermediate element 1410 may be disposed between the first support portion 1710 and the first corresponding portion 1730, for example, disposed between the first support portion 1710 and the first corresponding portion 1730 in the direction extending along the X-axis. Similarly, the second support portion 1720 and the second corresponding portion 1740 may directly contact the second intermediate element 1420, and the second intermediate element 1420 may be disposed between the second support portion 1720 and the second corresponding portion 1740, for example, disposed between the second support portion 1720 and the second corresponding portion 1740 in the direction extending along the X-axis.

[0146] In some embodiments, the first intermediate element 1410 and the second intermediate element 1420 may be fixed to the first support portion 1710 and the second support portion 1720, respectively, and are movably connected to the first corresponding portion 1730 and the second corresponding portion 1740 by frictional contact, respectively. In other embodiments, the first intermediate element 1410 and the second intermediate element 1420 may be fixed to the first corresponding portion 1730 and the second corresponding portion 1740, respectively, and are movably connected to the first support portion 1710 and the second support portion 1720 by frictional contact, depending on design requirements. In some embodiments, the first intermediate element 1410 and the second intermediate element 1420 may have a columnar shape and extend along the Z-axis direction. Thus, the first movable portion 1210 can move relative to the second movable portion 1220 along the Z-axis via the support assembly 1400.

[0147] In some embodiments, such as Figure 4A as well as Figure 4B As shown, the second movable portion 1220 may have a first groove 1231 and a second groove 1232, respectively for accommodating the first intermediate element 1410 and the second intermediate element 1420. The first groove 1231 and the second groove 1232 may extend along a first axis 1901, which may be, for example, an axis parallel to the Z-axis. In some embodiments, the first intermediate element 1410 and the second intermediate element 1420 may have different lengths; for example, on the first axis 1901, the length of the first intermediate element 1410 may be greater than the length of the second intermediate element 1420. Therefore, the first groove 1231 and the second groove 1232 may also have different lengths; for example, the length 1911 of the first groove 1231 may be greater than the length 1912 of the second groove 1232.

[0148] In some embodiments, the first trench 1231 may include a first starting end 1411 and a first ending end 1412, while the second trench 1232 may include a second starting end 1421 and a second ending end 1422. The first starting end 1411 and the first ending end 1412 may be located on both sides of the first trench 1231, while the second starting end 1421 and the second ending end 1422 may be located on both sides of the second trench 1232. On the first axis 1901 (Z-axis), there may be a non-zero distance 1913 between the first starting end 1411 and the second starting end 1421, and a non-zero distance 1914 between the first ending end 1412 and the second ending end 1422. In other words, on the first shaft 1901, there can be a height difference between the first starting end 1411 and the second starting end 1421, and there can also be a height difference between the first terminal end 1412 and the second terminal end 1422, thereby controlling the connection method of the first intermediate element 1410 and the second intermediate element 1420 relative to the second movable part 1220. For example, the connection method between the first intermediate element 1410 and the second movable part 1220 can be approximated as two-point support, while the connection method between the second intermediate element 1420 and the second movable part 1220 can be approximated as single-point support, thereby approximating three-point support, to further improve the stability of the overall structure.

[0149] In some embodiments, such as Figure 5B As shown, the first corresponding part 1730 may include a first contact surface 1731, a second contact surface 1732, a third contact surface 1733, a fourth contact surface 1734, a first connecting surface 1735, a second connecting surface 1736, and a third connecting surface 1737. The first connecting surface 1735 may be located between the first contact surface 1731 and the second contact surface 1732, and connects the first contact surface 1731 and the second contact surface 1732. The second connecting surface 1736 may be located between the third contact surface 1733 and the fourth contact surface 1734, and connects the third contact surface 1733 and the fourth contact surface 1734. The third connecting surface 1737 may be located between the first connecting surface 1735 and the second connecting surface 1736, and connects the first connecting surface 1735 and the second connecting surface 1736. The first contact surface 1731, the second contact surface 1732, the third contact surface 1733, and the fourth contact surface 1734 may be spaced apart from each other.

[0150] In some embodiments, the first contact surface 1731 and the third contact surface 1733 may be arranged along the first axis 1901, and the second contact surface 1732 and the fourth contact surface 1734 may also be arranged along the first axis 1901. In some embodiments, the first intermediate element 1410 may directly contact the first contact surface 1731, the second contact surface 1732, the third contact surface 1733, and the fourth contact surface 1734, and is spaced apart from the first connecting surface 1735, the second connecting surface 1736, and the third connecting surface 1737, for example, with a gap between them. That is, one end of the first intermediate element 1410 may directly contact the first contact surface 1731 and the second contact surface 1732, while the other end may directly contact the third contact surface 1733 and the fourth contact surface 1734. In other words, on the first axis 1901, the two ends of the first intermediate element 1410 may approximately rest on the first corresponding portion 1730 at two points.

[0151] In some embodiments, such as Figure 5C As shown, the second corresponding portion 1740 may include a first buffer surface 1741, a second buffer surface 1742, a protrusion 1743, and a fifth contact surface 1744. The protrusion 1743 may protrude toward the second intermediate element 1420 and may be located between the first buffer surface 1741 and the second buffer surface 1742, while the fifth contact surface 1744 may be located on the protrusion 1743 and between the first buffer surface 1741 and the second buffer surface 1742. In some embodiments, the first buffer surface 1741, the second buffer surface 1742, and the fifth contact surface 1744 may face the second intermediate element 1420 and may have a normal vector in the same direction (e.g., parallel to the X-axis). The fifth contact surface 1744 may directly contact the second intermediate element 1420, while the first buffer surface 1741 and the second buffer surface 1742 may be spaced apart from the second intermediate element 1420. Therefore, the second intermediate element 1420 can be approximately supported on the second corresponding part 1740 at a single point, so that the first intermediate element 1410 and the second intermediate element 1420 can be approximately supported on the first movable part 1210 at three points, thereby further improving the stability of the overall structure.

[0152] Figure 6 This is a top view of some components of the optical element drive mechanism 1000. (Example) Figure 6As shown, the drive assembly 1300 may include a first coil 1301, a second coil 1302, a third coil 1303, a fourth coil 1304, a first magnetic element 1311, a second magnetic element 1312, a third magnetic element 1313, and a fourth magnetic element 1314. The first magnetic element 1311, the second magnetic element 1312, the third magnetic element 1313, and the fourth magnetic element 1314 may correspond to the first coil 1301, the second coil 1302, the third coil 1303, and the fourth coil 1304, respectively. For example, the first coil 1301, the second coil 1302, and the third coil 1303 may be arranged with the first magnetic element 1311, the second magnetic element 1312, and the third magnetic element 1313 on the Z-axis, while the fourth coil 1304 may be arranged with the fourth magnetic element 1314 on the X-axis.

[0153] In some embodiments, the base 1120 may have a first positioning portion 1161, a second positioning portion 1162, and a third positioning portion 1163. The first positioning portion 1161 may include a first positioning element 1171 and a second positioning element 1172, the second positioning portion 1162 may include a third positioning element 1173 and a fourth positioning element 1174, and the third positioning portion 1163 may include a fifth positioning element 1175 and a sixth positioning element 1176. The first positioning element 1171, the second positioning element 1172, the third positioning element 1173, the fourth positioning element 1174, the fifth positioning element 1175, and the sixth positioning element 1176 may have a columnar structure and may extend along the Z-axis. The first coil 1301 can be wound on the first positioning element 1171 and the second positioning element 1172, the second coil 1302 can be wound on the third positioning element 1173 and the fourth positioning element 1174, and the third coil 1303 can be wound on the fifth positioning element 1175 and the sixth positioning element 1176 to fix the position of the first coil 1301, the second coil 1302, and the third coil 1303 relative to the base 1120.

[0154] In some embodiments, the first positioning element 1171 and the second positioning element 1172 may be arranged along the second axis 1902 (e.g., the Y-axis), the third positioning element 1173 and the fourth positioning element 1174 may be arranged along the third axis 1903 (e.g., the X-axis), and the fifth positioning element 1175 and the sixth positioning element 1176 may be arranged along the second axis 1902 (e.g., the Y-axis). That is, the first coil 1301 may have an elongated structure and extend along the second axis 1902. The second coil 1302 may have an elongated structure and extend along the third axis 1903. The third coil 1303 may have an elongated structure and extend along the second axis 1902.

[0155] In some embodiments, on the second axis 1902, the first positioning element 1171 has a maximum size 1921, and the second positioning element 1172 has a maximum size 1922. On the third axis 1903, the third positioning element 1173 may have a maximum size 1923, and the fourth positioning element 1174 may have a maximum size 1924. In some embodiments, the maximum size 1921 is different from the maximum sizes 1923 and 1924, and the maximum size 1922 is also different from the maximum sizes 1923 and 1924.

[0156] In some embodiments, such as Figure 2A , Figure 2B ,as well as Figure 6 As shown, a first reinforcing element 1321, a second reinforcing element 1322, and a third reinforcing element 1323 can be respectively provided on the first magnetic element 1311, the second magnetic element 1312, and the third magnetic element 1313. For example, the first reinforcing element 1321, the second reinforcing element 1322, and the third reinforcing element 1323 can at least partially overlap with the first magnetic element 1311, the second magnetic element 1312, and the third magnetic element 1313 on the Z-axis. In addition, the first reinforcing element 1321, the second reinforcing element 1322, and the third reinforcing element 1323 can correspond to the first coil 1301, the second coil 1302, and the third coil 1303, respectively. For example, the first reinforcing element 1321, the second reinforcing element 1322, and the third reinforcing element 1323 can at least partially overlap with the first coil 1301, the second coil 1302, and the third coil 1303 on the Z-axis. In some embodiments, the winding axes of the first coil 1301, the second coil 1302, and the third coil 1303 can all be parallel to the Z-axis.

[0157] In some embodiments, on the Z-axis, the first reinforcing element 1321 may at least partially overlap with the first positioning portion 1161, the second reinforcing element 1322 may at least partially overlap with the second positioning portion 1162, and the third reinforcing element 1323 may at least partially overlap with the third positioning portion 1163, thereby reducing the size of the optical element driving mechanism 1000 in other directions and achieving miniaturization. In some embodiments, the first reinforcing element 1321, the second reinforcing element 1322, and the third reinforcing element 1323 may have a different material than the first positioning portion 1161, the second positioning portion 1162, and the third positioning portion 1163. For example, the material of the first reinforcing element 1321, the second reinforcing element 1322, and the third reinforcing element 1323 may include metal, while the material of the first positioning portion 1161, the second positioning portion 1162, and the third positioning portion 1163 may include a non-conductive material, such as a dielectric material like plastic or rubber.

[0158] Figure 7 This is a schematic diagram of some components of the optical element drive mechanism 1000. (Example) Figure 6 , Figure 7 As shown, the optical element driving mechanism 1000 may further include a first electronic element 1341 disposed between the first positioning element 1171 and the second positioning element 1172. In some embodiments, the first electronic element 1341 may include, for example, a Hall effect sensor, a magnetoresistive effect sensor (MR sensor), a giant magnetoresistive effect sensor (GMR sensor), a tunneling magnetoresistive effect sensor (TMR sensor), or a fluxgate sensor. The first electronic element 1341 may also include integrated circuit elements for control.

[0159] like Figure 6 , Figure 7 As shown, the optical element driving mechanism 1000 may further include a first protective element 1331 disposed between the first positioning element 1171 and the second positioning element 1172, and may directly contact the first coil 1301, the first electronic component 1341, the first positioning element 1171, and the second positioning element 1172. The first protective element 1331 may include, for example, adhesive, which may be used to fill the gap between the first coil 1301, the first positioning element 1171, and the second positioning element 1172, and may also be used to protect the first electronic component 1341. In some embodiments, the shortest distance 1931 between the first protective element 1331 and the first magnetic element 1311 is greater than the shortest distance 1932 between the first positioning element 1171 and the first magnetic element 1311. That is, when the first magnetic element 1311 moves on the Z-axis, the first magnetic element 1311 will first touch the first positioning element 1171 before the first magnetic element 1311 directly contacts the first protective element 1331. This can be used to avoid the first protective element 1331 and the first magnetic element 1311 from colliding and being damaged, thereby further improving the durability of the optical element drive mechanism 1000.

[0160] In some embodiments, such as Figure 6As shown, the optical element driving mechanism 1000 may further include a second electronic element 1342 and a third electronic element 1343, disposed between the third positioning element 1173 and the fourth positioning element 1174. The second electronic element 1342 and the third electronic element 1343 may include elements similar to the aforementioned first electronic element 1341, which will not be described in detail here. A second protective element 1332 may also be provided on the second electronic element 1342 and the third electronic element 1343. For example, the second protective element 1332 may contact the second electronic element 1342, the third electronic element 1343, the third positioning element 1173, and the fourth positioning element 1174 to protect the second electronic element 1342 and the third electronic element 1343. The second protective element 1332 may include, for example, adhesive.

[0161] In some embodiments, such as Figure 6 As shown, the third positioning portion 1163 may further include a connecting portion 1177, connecting the fifth positioning element 1175 and the sixth positioning element 1176. The connecting portion 1177 may have a plate-like structure, and the third protective element 1333 may be disposed in the groove formed by the fifth positioning element 1175, the sixth positioning element 1176, and the connecting portion 1177. The third protective element 1333 may include, for example, adhesive, to protect the third coil 1303.

[0162] In some embodiments, on the third axis 1903, the maximum size 1941 of the second coil 1302 is different from the maximum size 1942 of the third coil 1303; for example, the maximum size 1941 may be larger than the maximum size 1942. That is, the driving force generated by the second coil 1302 and the second magnetic element 1312 may be greater than the driving force generated by the third coil 1303 and the third magnetic element 1313. Thus, the second coil 1302 and the second magnetic element 1312 can be designed primarily to drive the second movable part 1220, while the third coil 1303 and the third magnetic element 1313 can be designed to prevent the second movable part 1220 from flipping during movement.

[0163] Figure 8 This is a schematic diagram of base 1120. (As shown) Figure 8 As shown, in some embodiments, the base 1120 may include a second body 1121, a third metal assembly 1122 (also referred to as a circuit unit), and a second stop element 1123. The third metal assembly 1122 may be embedded in the second body 1121 and partially exposed thereout, serving as a conductive line and to enhance structural strength. The second body 1121 may include a dielectric material, such as plastic. Figures 3A to 3CAs shown, the first coil 1301 is electrically connected to the third metal component 1122 (also referred to as a circuit unit) at the first electrical connection portion 1315, and the second coil 1302 is electrically connected to the third metal component 1122 at the second electrical connection portion 1316. The first damping element 1151 can directly contact the first electrical connection portion 1315, and the second damping element 1152 can directly contact the second electrical connection portion 1316 to protect the first electrical connection portion 1315 and the second electrical connection portion 1316. The first electrical connection portion 1315 and the second electrical connection portion 1316 may include solder, for example, and the third metal component 1122 may be partially exposed at the first electrical connection portion 1315 and the second electrical connection portion 1316 from the second body 1121.

[0164] The second stop element 1123 may be disposed on the second body 1121 and the third metal assembly 1122 to restrict the movement of the optical element, for example, through direct or indirect restriction. The second stop element 1123 may be made of a dielectric material, and the second body 1121 and the second stop element 1123 may be made of different materials; for example, the Young's modulus of the second stop element 1123 may be lower than that of the second body 1121. In some embodiments, the second stop element 1123 may include rubber. In some embodiments, the first stop element 1141 and the second stop element 1123 may include the same material, and the first body 1221 and the second body 1121 may also have the same material.

[0165] Figure 9A This is a schematic diagram of some components of the optical element drive mechanism 1000. In some embodiments, such as Figure 2A , Figure 9A As shown, the second movable portion 1220 may further include a first metal component 1222 disposed in the first body 1221. In some embodiments, the first metal component 1222 may include a metallic material and be disposed in the first body 1221, for example, partially embedded in the first body 1221 and partially exposed in the first body 1221. The first metal component 1222 may correspond to the first circuit component 1500, for example, and may at least partially overlap in the X direction. The first metal component 1222 can be used to enhance the mechanical strength of the second movable portion 1220.

[0166] In some embodiments, the optical element driving mechanism 1000 may further include a first amplifying element 1223. The first amplifying element 1223 may be located between the first circuit assembly 1500 and the first metal assembly 1222, and may be made of metal. In some embodiments, the first metal assembly 1222 and the first amplifying element 1223 may be made of different materials; for example, the magnetic permeability of the first amplifying element 1223 may be greater than that of the first metal assembly 1222, so as to enhance the driving strength of the fourth coil 1304 and the fourth magnetic element 1314 through the first amplifying element 1223. In some embodiments, such as Figure 2A As shown, the fourth coil 1304 can be disposed on the second movable part 1220, and the fourth magnetic element 1314 can be disposed on the first movable part 1210, so that the first movable part 1210 can be driven to move relative to the second movable part 1220, for example, to move parallel to the Z-axis, by means of the fourth coil 1304 and the fourth magnetic element 1314.

[0167] In some embodiments, such as Figure 2A , Figure 9A As shown, the optical element driving mechanism 1000 may further include a first connecting element 1224. The first connecting element 1224 may directly contact the first metal assembly 1222, the first amplifying element 1223, and the first circuit assembly 1500. The first connecting element 1224 may include, for example, adhesive, for fixing the first amplifying element 1223 to the first circuit assembly 1500. In some embodiments, the first metal assembly 1222 has a first receiving portion 1225 with a recessed structure for receiving the first amplifying element 1223, and the first connecting element 1224 is also at least partially received in the first receiving portion 1225.

[0168] Figure 9B This is a schematic diagram of some components of the optical element drive mechanism 1000. (Example) Figure 9B As shown, the second movable part 1220 may further include a second metal component 1226, which is made of metal and disposed in the first body 1221. For example, it may be partially embedded in the first body 1221 and partially exposed in the first body 1221. The second metal component 1226 may be electrically connected to the drive component 1300. For example, it may include a first electrical contact 1228, which is electrically connected to the drive component 1300 (e.g., electrically connected to the fourth coil 1304).

[0169] The first circuit assembly 1500 may have a plate-like structure, and in a first direction parallel to the first circuit assembly 1500 (e.g., the Y direction), the first metal assembly 1222 and the second metal assembly 1226 at least partially overlap. Furthermore, the optical element driving mechanism 1000 may also include a first electrical connection element 1227 disposed at a first electrical contact 1228, for example, overlapping in the X direction. In the first direction, the first electrical connection element 1227 and the first metal assembly 1222 may at least partially overlap.

[0170] In addition, such as Figures 3A to 3C As shown, the optical element driving mechanism 1000 may also have a third circuit assembly 1350 located at a corner of the optical element driving mechanism 1000 and extending along the Z-axis. The first stop element 1141 may have a first groove 1142 corresponding to the third circuit assembly 1350; for example, the third circuit assembly 1350 may be accommodated in the first groove 1142, and the first groove 1142 is spaced apart from the first stop element 1141 to protect the third circuit assembly 1350. Furthermore, the second movable portion 1220 may also have a second groove 1229 corresponding to the third circuit assembly 1350; for example, the third circuit assembly 1350 may be accommodated in the second groove 1229, and the second groove 1229 is spaced apart from the first stop element 1141 to protect the third circuit assembly 1350. When viewed along the main axis 1900, the first groove 1142 and the second groove 1229 may be located at the first corner 1131. In some embodiments, the first groove 1142 may be continuously connected to the second groove 1229. Thus, an electrical signal can be transmitted from one side of the optical element drive mechanism 1000 to the other side via a third circuit assembly 1350 extending along the Z-axis.

[0171] In some embodiments, the second circuit assembly 1600 is movable relative to the second metal assembly 1226 and can be electrically connected to each other. That is, the second circuit assembly 1600, electrically connected to an external module (not shown), can be electrically connected to other components via the second metal assembly 1226. The second circuit assembly 1600 can be electrically connected to a third circuit assembly 1350 and can be electrically connected to an external circuit (not shown) via the third circuit assembly 1350, and the second metal assembly 1226 can also be electrically connected to this external circuit via the third circuit assembly 1350. In other words, the second metal assembly 1226 and the second circuit assembly 1600 can share the third circuit assembly 1350 to transmit signals, thereby reducing the number of required components, saving costs, and achieving miniaturization.

[0172] In summary, the embodiments of this disclosure provide an optical element driving mechanism, including a first movable part, a fixed part, and a driving assembly. The movable part is used to connect to the optical element. The movable part can move relative to the fixed part. The driving assembly is used to drive the first movable part to move relative to the fixed part. Thus, effects such as autofocus, optical image stabilization, and zoom can be achieved, and miniaturization can also be realized.

[0173] The specific relative positions and size relationships of the components disclosed in this disclosure not only enable the drive mechanism to achieve thinning in a specific direction and overall miniaturization, but also further improve the optical quality of the system (such as shooting quality or depth sensing accuracy) by matching different optical modules, and further utilize each optical module to achieve a multi-stage anti-shake system to greatly improve the anti-shake effect.

[0174] While the embodiments and advantages of this disclosure have been disclosed above, it should be understood that those skilled in the art can make modifications, substitutions, and refinements without departing from the spirit and scope of this disclosure. Furthermore, the scope of protection of this disclosure is not limited to the processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps described in the specific embodiments within the specification. Any processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps currently in use or to be developed in the future can be understood from the disclosure of this disclosure, and can be used according to this disclosure as long as they can perform substantially the same function or obtain substantially the same results in the embodiments described herein. Therefore, the scope of protection of this disclosure includes the aforementioned processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps. Additionally, each claim constitutes an individual embodiment, and the scope of protection of this disclosure also includes combinations of the various claims and embodiments.

Claims

1. An optical element driving mechanism characterized by comprising: The optical element driving mechanism comprises: a first movable part for connecting an optical element; a fixed part, the first movable part being movable relative to the fixed part; a driving assembly for driving the first movable part to move relative to the fixed part, the driving assembly comprising a first circuit assembly; and a second movable part corresponding to the driving assembly, comprising: a first body having a dielectric material; and a first metal assembly having a metal material, disposed on the first body; and a first amplification element located between the first circuit assembly and the first metal assembly.

2. The optical element drive mechanism according to claim 1, wherein Wherein: the first metal assembly corresponds to the first circuit assembly.

3. The optical element drive mechanism according to claim 2, wherein Wherein: the first amplification element has a metal material; the first amplification element and the first metal assembly have different materials; the magnetic permeability of the first amplification element is greater than that of the first metal assembly.

4. The optical element drive mechanism according to claim 3, wherein Further comprising a first connecting element directly contacting the first amplification element; Wherein: the first connecting element directly contacts the first body; the first connecting element directly contacts the first circuit assembly; the first connecting element directly contacts the first metal assembly; the first metal assembly has a first accommodating portion for accommodating the first amplification element; the first connecting element is at least partially accommodated in the first accommodating portion.

5. The optical element drive mechanism according to claim 4, wherein Further comprising a first electrical connecting element, wherein: the second movable part further comprises a second metal assembly having a metal material, disposed on the first body and electrically connected to the driving assembly; the first circuit assembly has a plate-like structure; in a first direction parallel to the first circuit assembly, the first metal assembly and the second metal assembly at least partially overlap; the second metal assembly comprises a first electrical contact connected to the driving assembly; in the first direction, the first electrical connecting element and the first metal assembly at least partially overlap; the first electrical connecting element is disposed on the first electrical contact.

6. The optical element drive mechanism according to claim 5, wherein Further comprising: a second circuit assembly for connecting an external circuit; a third circuit assembly for connecting the external circuit; Wherein: the second circuit assembly comprises a first connecting portion and a second connecting portion; the second connecting portion and the first connecting portion have a gap therebetween; when viewed along a main axis, the optical element driving mechanism has a polygonal structure and comprises a first side; when viewed along the main axis, the first connecting portion and the second connecting portion are located on the first side; the fixed part comprises an outer frame and a base; the outer frame and the base are arranged along the main axis; when viewed along the main axis, the first connecting portion and the second connecting portion are at least partially exposed to the outer frame; the second circuit assembly is movable relative to the second metal assembly; the second circuit assembly is electrically connected to the second metal assembly; the second circuit assembly is electrically connected to the external circuit via the third circuit assembly; the second metal assembly is electrically connected to the external circuit via the third circuit assembly.

7. The optical element driving mechanism of claim 6, wherein: the second circuit assembly further comprises: a third connecting portion; and a fourth connecting portion having a gap therebetween; when viewed along the main axis, the third connecting portion and the fourth connecting portion are located on the first side; The third connecting portion and the fourth connecting portion are at least partially exposed from the frame when viewed along the main axis; The first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion are arranged in the first direction.

8. The optical element drive mechanism according to claim 7, wherein A first stop element is further included to limit the movement range of the first movable portion; Wherein: The first stop element is fixedly arranged on the first body; The first stop element has a dielectric material; The first stop element and the first body have different materials; The Young's modulus of the first stop element is lower than that of the first body; The first stop element has a first recess corresponding to the third circuit assembly; The first stop element is spaced apart from the third circuit assembly.

9. The optical element driving mechanism of claim 8, wherein: The second movable portion has a second recess corresponding to the third circuit assembly; The second recess is spaced apart from the third circuit assembly; The first recess is continuously connected to the second recess; The optical element driving mechanism has a polygonal shape when viewed along the main axis, and includes a first corner; The first recess is located at the first corner when viewed along the main axis; The second recess is located at the first corner when viewed along the main axis.

10. The optical element drive mechanism according to claim 9, wherein Further comprising: A second stop element to limit the movement of the optical element; A third metal assembly, the second stop element is arranged on the third metal assembly; And A second body, the third metal assembly is at least partially arranged on the second body; Wherein: The second stop element has a dielectric material; The second body has a dielectric material; The second stop element and the second body have different materials; The Young's modulus of the second stop element is lower than that of the second body; The first stop element and the second stop element have the same material; The first body and the second body have the same material.

Images