Optical element driving mechanism

Abstract

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

Description

Technical Field

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

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and thinner designs to provide users with more choices.

[0003] The aforementioned electronic devices with camera or video recording functions are usually provided with an optical element driving mechanism to drive the optical element (e.g., lens) to move along the optical axis, thereby achieving the functions of auto focus (AF) or optical image stablization (OIS). Light can pass through the aforementioned optical element to form an image on the photosensitive element. However, the current trend of mobile devices is to have a smaller size and higher durability, so how to effectively reduce the size of the optical element driving mechanism and improve its durability has become an important issue. Utility Model Content

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

[0005] The embodiment of the present disclosure provides an optical element driving mechanism, comprising a movable part, a fixed part, and a driving assembly. The movable part is used to connect the optical element. The movable part can move relative to the fixed part. The driving assembly is used to drive the movable part to move relative to the fixed part.

[0006] In some embodiments, the optical element driving mechanism also includes a first sensing component and a second sensing component, and the first sensing component is used to sense the rotation of the movable part relative to the fixed part with the first rotating axis as the axis center. The first sensing component includes a first reference object and a first sensing element. The first sensing element corresponds to the first reference object. The first reference object has a first magnetic part and a second magnetic part, which are arranged along the first axis. The second sensing component is used to sense the rotation of the movable part relative to the fixed part with the second rotating axis as the axis center. The second sensing component includes a second reference object and a second sensing element. The second sensing element corresponds to the second reference object. The second reference object has a third magnetic part and a fourth magnetic part, which are arranged along the second axis. On the second axis, the maximum size of the third magnetic part is different from the maximum size of the fourth magnetic part.

[0007] In some embodiments, the first axis is parallel to the second axis. When viewed along the second axis, the line connecting the center of the second reference object and the center of the second sensing element does not pass through the second axis. When viewed along the second axis, the third magnetic portion has a first distance from the second axis. When viewed along the second axis, the fourth magnetic portion has a second distance from the second axis. The first distance is different from the second distance. The size difference between the first magnetic portion and the second magnetic portion on the first axis is different from the size difference between the third magnetic portion and the fourth magnetic portion on the second axis. The shortest distance between the first sensing component and the first axis is different from the shortest distance between the second sensing component and the second axis. When viewed along the first axis, the line connecting the center of the first reference object and the center of the first sensing element has a third distance from the first axis. When viewed along the second axis, the line connecting the center of the second reference object and the center of the second sensing element has a fourth distance from the second axis. The third distance is different from the fourth distance.

[0008] In some embodiments, on the second axis, the maximum size of the third magnetic portion is greater than the maximum size of the fourth magnetic portion. The first distance is greater than the second distance. The third distance is less than the fourth distance. The size difference between the first magnetic portion and the second magnetic portion on the first axis is less than the size difference between the third magnetic portion and the fourth magnetic portion on the second axis. The shortest distance between the first sensing component and the first rotating shaft is less than the shortest distance between the second sensing component and the second rotating shaft. The optical element driving mechanism also includes a circuit component. The circuit component includes a circuit element, a first reinforcing element, and a second reinforcing element. The fixing portion includes an outer frame and a base. The first reinforcing element is disposed between the base and the circuit element. The second reinforcing element is disposed between the outer frame and the circuit element. The first reinforcing element is separated from the second reinforcing element. The first reinforcing element and the second reinforcing element have a non-magnetic material.

[0009] In some embodiments, the optical element driving mechanism further comprises a first adhesive element, a second adhesive element, a third adhesive element and a fourth adhesive element, wherein the first adhesive element directly contacts the outer frame and the second reinforcing element. The driving assembly comprises a first driving coil, a second driving coil, a third driving coil and a third magnetic element. The first driving coil, the second driving coil and the third driving coil correspond to the first reference object, the second reference object and the third magnetic element, respectively. The first driving coil comprises a first lead. The third driving coil comprises a third lead. The second driving coil and the third driving coil are arranged on both sides of the movable part. The second adhesive element directly contacts the outer frame, the base and the third lead. The third adhesive element directly contacts the outer frame and the base. Observed along the main axis, the first reinforcing element comprises a first opening. The fourth adhesive element is arranged in the first opening. The fourth adhesive element directly contacts the first driving coil. The fourth adhesive element covers the first lead.

[0010] In some embodiments, the first reinforcing element further comprises a second opening and a third opening when viewed along the main axis. The second opening extends along the fourth axis. The third opening extends along the third axis. The second axis is parallel to the third axis. The second opening has a second length on the fourth axis and a second width on the third axis. The third opening has a third length on the third axis and a third width on the fourth axis. The second length is greater than the second width. The third length is greater than the third width. The third axis is not parallel to the fourth axis.

[0011] In some embodiments, the optical element driving mechanism further includes an intermediate component, through which the movable part can move relative to the fixed part, and the intermediate component includes a supporting element and a contact element. The contact element directly contacts the supporting element. The hardness of the supporting element is greater than the hardness of the contact element. The contact element is made of metal. The contact element has a plate-like structure. The movable part includes a substrate and a reinforcing component. The contact element is fixedly disposed on the substrate. The reinforcing component is fixedly disposed on the substrate and the fixed part. The hardness of the reinforcing component is greater than the hardness of the substrate. The reinforcing component is at least partially embedded in the substrate. The reinforcing component is at least partially embedded in the fixed part. The reinforcing component is adjacent to the driving component. The magnetic permeability of the reinforcing component is different from the magnetic permeability of the contact element. The magnetic permeability of the reinforcing component is greater than the magnetic permeability of the contact element. The reinforcing component is made of metal. The substrate is made of plastic or rubber.

[0012] In some embodiments, the reinforcement assembly includes a first reinforcement element and a second reinforcement element. The first reinforcement element is separated from the second reinforcement element. The first reinforcement element and the second reinforcement element are arranged on both sides of the support element. The contact element is arranged between the support element and the second reinforcement element. The contact element directly contacts the second reinforcement element and the support element. The second reinforcement element directly contacts the first reference object. The thickness of the second reinforcement element is different from the thickness of the contact element.

[0013] In some embodiments, the thickness of the second reinforcing element is less than the thickness of the contact element. The optical element driving mechanism further includes an elastic element disposed between the movable portion and the fixed portion. When viewed along the third axis, the elastic element includes a plurality of string portions, a connecting portion, and an opening. The connecting portion connects the string portions. When viewed along the third axis, the opening and the connecting portion are on both sides of the supporting element. When viewed along the third axis, the supporting element and the connecting portion do not overlap.

[0014] In some embodiments, the optical element driving mechanism further comprises a supporting element and a plurality of elastic elements, and the movable part can move relative to the fixed part via the supporting element. The second reinforcing element directly contacts the supporting element and the first reference object. The elastic element is disposed between the movable part and the fixed part. The elastic elements are spaced apart from each other.

[0015] The beneficial effect of the present disclosure lies in that the special relative positions and size relationships of the components disclosed in the present disclosure not only enable the driving mechanism to be thinner in a specific direction and smaller as a whole, but also further enhance the optical quality (such as shooting quality or depth sensing accuracy) of the system by matching different optical modules, and further utilize each optical module to achieve a multiple anti-shake system to greatly enhance the anti-shake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following will be described in detail with reference to the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not shown in proportion and are only used for illustration. In fact, the size of the elements may be arbitrarily enlarged or reduced to clearly show the features of the present disclosure.

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

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

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

[0020] Figure 1D It is a side view of the optical element driving mechanism.

[0021] Figure 2A is along Figure 1C The line segment AA shows the cross-sectional view.

[0022] Figure 2B is along Figure 1C The line segment BB shows the cross-sectional view.

[0023] Figure 2C is along Figure 1D The line segment CC shows the cross-sectional view.

[0024] Figure 2D yes Figure 2C Magnified view of the area in .

[0025] Figure 3A , Figure 3B , Figure 3C It is a schematic diagram of some components of the optical element driving mechanism when viewed from different directions.

[0026] Figure 4A , Figure 4B It is a schematic diagram of some components of the optical element drive mechanism when viewed from different angles.

[0027] Figure 5 It is a bottom view of some components of the optical element drive mechanism.

[0028] Fig. 6A is a schematic diagram of an optical element driving mechanism according to some embodiments of the present disclosure.

[0029] Figure 6B It is a top view of the optical element driving mechanism.

[0030] Figure 6C It is along Figure 6B The line segment DD shows the cross-sectional view.

[0031] Fig.6D It is a schematic diagram of some components of the optical element drive mechanism.

[0032] Fig. 6E It is a rear view of some components of the optical element drive mechanism.

[0033] The reference numerals are as follows:

[0034] 1000,2000: Optical element drive mechanism

[0035] 1100:Fixed part

[0036] 1110: Outer frame

[0037] 1120: Base

[0038] 1200: Activities Department

[0039] 1210: Base

[0040] 1220: Strengthening components

[0041] 1221: First strengthening element

[0042] 1222,2220: Second strengthening element

[0043] 1300: Drive components

[0044] 1311: first magnetic element

[0045] 1312: Second magnetic element

[0046] 1313: Third magnetic element

[0047] 1321: first drive coil

[0048] 1322: Second drive coil

[0049] 1323: Third drive coil

[0050] 1331: First magnetic part

[0051] 1332: Second magnetic part

[0052] 1333: Third magnetic part

[0053] 1334: Fourth Magnetic Section

[0054] 1341: first sensing element

[0055] 1342: Second sensing element

[0056] 1351: First lead

[0057] 1353: Third lead

[0058] 1400:Circuit assembly

[0059] 1410: Circuit Components

[0060] 1420: first reinforcing element

[0061] 1421: First Opening

[0062] 1422: Second opening

[0063] 1423: The third opening

[0064] 1424: Second length

[0065] 1425: The third length

[0066] 1426: Second width

[0067] 1427: Third Width

[0068] 1430: Second reinforcing element

[0069] 1500:Intermediate Components

[0070] 1510: Support element

[0071] 1512: Contact element

[0072] 1520,2520: Elastic element

[0073] 1521: String

[0074] 1522:Connection

[0075] 1523: Opening

[0076] 1610: first adhesive element

[0077] 1620: Second adhesive element

[0078] 1630: Third adhesive element

[0079] 1640: Fourth adhesive element

[0080] 1650: Buffer element

[0081] 1800: Optical components

[0082] 1900: Spindle

[0083] 1901: First Axis

[0084] 1902: Second Axis

[0085] 1903: The Third Axis

[0086] 1904: The Fourth Axis

[0087] 1911: The first axis

[0088] 1912: Second axis

[0089] 1921: First Distance

[0090] 1922: The Second Distance

[0091] 1923: The Fourth Distance

[0092] 1925: Minimum distance

[0093] 1931: First Size

[0094] 1932: The Second Dimension

[0095] 1940: Region

[0096] X,Y,Z: coordinates DETAILED DESCRIPTION

[0097] Many different implementation methods or examples are disclosed below to implement the different features of the provided subject matter. The following describes specific embodiments of the components and their arrangements to illustrate the present disclosure. Of course, these embodiments are only for illustration and should not be used to limit the scope of the present disclosure. For example, it is mentioned in the specification that the first characteristic component is formed on the second characteristic component, which may include an embodiment in which the first characteristic component and the second characteristic component are in direct contact, and may also include an embodiment in which there are other features between the first characteristic component and the second characteristic component. In other words, the first characteristic component and the second characteristic component are not in direct contact.

[0098] In addition, repeated numbers or marks may be used in different embodiments, and these repetitions are only for the purpose of simply and clearly describing the present disclosure, and do not represent a specific relationship between the different embodiments and / or structures discussed. In addition, in the present disclosure, forming, connecting to and / or coupling to another feature component on another feature component may include an embodiment in which the feature component is formed to be in direct contact, and may also include an embodiment in which an additional feature component inserted into the above-mentioned feature component can be formed, so that the above-mentioned feature component may not be in direct contact. In addition, space-related words may be used, such as "vertical", "above", "up", "below", "bottom" and similar words (such as "downwardly", "upwardly", etc.), these space-related words are for the convenience of describing the relationship between one (some) element or feature and another (some) element or feature in the diagram, and these space-related words are intended to cover different directions of the device including the feature.

[0099] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0100] Furthermore, the ordinal numbers used in the specification and claims, such as "first", "second", etc., to modify the elements of the claims, do not themselves imply or represent any previous ordinal number of the requested element, nor do they represent the order of one requested element and another requested element, or the order in the manufacturing method. The use of multiple ordinals is only used to clearly distinguish a requested element with a certain name from another requested element with the same name.

[0101] In addition, in some embodiments of the present disclosure, terms such as "connection" and "interconnection" may refer to two structures being in direct contact with each other, or two structures not being in direct contact with each other, and other structures being disposed between the two structures, unless otherwise specified. Such terms may also include situations where both structures are movable or both structures are fixed.

[0102] The present disclosure provides an optical element driving mechanism for driving an optical element to move. For example, Figure 1A is a schematic diagram of an 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, Figure 1D is a side view of the optical element driving mechanism 1000. Figure 2A is along Figure 1C The line segment AA shows the cross-sectional view, Figure 2B is along Figure 1C The cross-sectional view shown by line segment BB, Figure 2C is along Figure 1D The line segment CC shows the cross-sectional view.

[0103] like Figures 1A to 2C As shown, the optical element driving mechanism 1000 may mainly include a fixed part 1100, a movable part 1200, a driving component 1300, a circuit component 1400, an intermediate component 1500, and an elastic component 1520 arranged along a main axis 1900 to carry the optical element 1800 to move.

[0104] In some embodiments, the optical element 1800 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 optical element here is not limited to elements related to visible light, and elements related to invisible light (such as infrared light, ultraviolet light) may also be included in the present disclosure.

[0105] In some embodiments, the outer frame 1110 and the base 1120 can be combined to form a housing of the optical element driving mechanism 1000, and other components 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 components. For example, the base 1120 can be fixedly connected to the outer frame 1110.

[0106] In some embodiments, the movable portion 1200 may be disposed in the fixed portion 1100 and used to connect the optical element 1800 to allow the optical element 1800 to move together with the movable portion 1200 relative to the fixed portion 1100 .

[0107] In some embodiments, the driving component 1300 can be used to drive the movable part 1200 to move relative to the fixed part 1100. For example, the driving component 1300 may include a first magnetic element 1311, a second magnetic element 1312, a third magnetic element 1313, a first driving coil 1321, a second driving coil 1322, and a third driving coil 1323. The first magnetic element 1311, the second magnetic element 1312, and the third magnetic element 1313 may be disposed on the movable part 1200, and the first driving coil 1321, the second driving coil 1322, and the third driving coil 1323 may be disposed on the fixed part 1100 (for example, Figure 1D As shown, it can be set on the outer frame 1110). When the first drive coil 1321, the second drive coil 1322, and the third drive coil 1323 are energized, the first drive coil 1321, the second drive coil 1322, and the third drive coil 1323 will respectively interact with the magnetic fields of the first magnetic element 1311, the second magnetic element 1312, and the third magnetic element 1313, and generate an electromagnetic driving force (electromagnetic force) to drive the movable part 1200 and the aforementioned optical element 1800 to move relative to the fixed part 1100, so as to achieve the effect of autofocus (AutoFocus, AF) or optical image stabilization (Optical Image Stabilization, OIS). In some embodiments, the first magnetic element 1311, the second magnetic element 1312, and the third magnetic element 1313 can also be changed to be set on the fixed part 1100, and the first drive coil 1321, the second drive coil 1322, and the third drive coil 1323 can be set on the movable part 1200, depending on the design requirements.

[0108] In some embodiments, the movable portion 1200 and the first driving coil 1321 may be arranged along the main axis 1900 , and the second driving coil 1322 and the third driving coil 1323 may be disposed on both sides of the movable portion 1200 and arranged along an X-axis perpendicular to the main axis 1900 .

[0109] In some embodiments, the circuit assembly 1400 may include a circuit element 1410, a first reinforcing element 1420, and a second reinforcing element 1430. The circuit element 1410 is, for example, a flexible printed circuit (FPC), the driving component 1300 may be fixed on the circuit element 1410 by adhesion, and the circuit element 1410 may be disposed between the fixed portion 1100 and the movable portion 1200.

[0110] In this embodiment, the circuit element 1410 is electrically connected to other electronic elements disposed inside or outside the optical element driving mechanism 1000. For example, the circuit element 1410 can transmit electrical signals to the first driving coil 1321, the second driving coil 1322, and the third driving coil 1323, thereby controlling the movement of the movable part 1200 on each axis, thereby realizing the functions of auto focus (AF) or optical image stabilization (OIS).

[0111] In some embodiments, the first reinforcing element 1420 and the second reinforcing element 1430 may be disposed on the circuit element 1410 and may be made of a metal and non-magnetic material to increase the mechanical strength of the circuit element 1410 and avoid magnetic interference. Figure 2B , Figure 2C As shown, when observed along the Z-axis direction, the circuit element 1410 is located between the base 1120 and the first reinforcing element 1420, and when observed along the negative Z-axis direction, the bottom side portion of the base 1120 overlaps with the circuit element 1410 and the first reinforcing element 1420 (the circuit element 1410 can be set between the base 1120 and the first reinforcing element 1420), and the second reinforcing element 1430 can be set between the outer frame 1110 and the circuit element 1410.

[0112] In some embodiments, the elastic element 1520 may, for example, include a metal material and is disposed between the fixed portion 1100 and the movable portion 1200 to movably connect the fixed portion 1100 and the movable portion 1200 , thereby allowing the movable portion 1200 and the optical element 1800 disposed on the movable portion 1200 to move relative to the fixed portion 1100 .

[0113] In some embodiments, the movable part 1200 can move relative to the fixed part 1100 via the intermediate component 1500, and the intermediate component 1500 can include a support element 1510 and a contact element 1512, the contact element 1512 can directly contact the support element 1510, and the hardness of the support element 1510 can be greater than the hardness of the contact element 1512. The movable part 1200 can move relative to the fixed part 1100 via the intermediate component 1500, for example, the support element 1510 can have a spherical surface, and can be fixed to one of the fixed part 1100 or the movable part 1200, and can move relative to the other to reduce the friction between the fixed part 1100 and the movable part 1200. In some embodiments, the support element 1510 can be made of ceramic material, and the contact element 1512 can be made of metal material and can have a plate-like structure.

[0114] In some embodiments, Figure 2A , Figure 2BAs shown, the movable part 1200 may include a substrate 1210 and a reinforcing component 1220, the reinforcing component 1220 may be fixedly disposed in the substrate 1210, and the contact element 1512 may also be fixedly disposed in the substrate 1210, for example, at least partially embedded in the substrate 1210. In some embodiments, the hardness of the reinforcing component 1220 is greater than the hardness of the substrate 1210, for example, the reinforcing component 1220 may be made of metal, and the substrate 1210 may be made of plastic or rubber. By disposing the reinforcing component 1220 in the substrate 1210, the overall strength of the movable part 1200 may be enhanced.

[0115] In some embodiments, the reinforcement component 1220 may be adjacent to the driving component 1300, and the reinforcement component 1220 and the contact element 1512 may have different materials. In some embodiments, the magnetic permeability of the reinforcement component 1220 is different from the magnetic permeability of the contact element 1512. For example, the magnetic permeability of the reinforcement component 1220 may be greater than the magnetic permeability of the contact element 1512.

[0116] In some embodiments, Figure 2B , Figure 2C As shown, a first sensing element 1341 and a second sensing element 1342 may be provided on the circuit element 1410, and are located in the first driving coil 1321 and the second driving coil 1322, respectively, to sense the magnetic field changes of the first magnetic element 1311 and the second magnetic element 1312 when the movable part 1200 moves relative to the fixed part 1100, so as to obtain the position of the movable part 1200 relative to the fixed part 1100. Therefore, the first magnetic element 1311 and the second magnetic element 1312 may be respectively referred to as the first reference object and the second reference object, and the first sensing element 1341 and the second sensing element 1342 may correspond to the first reference object and the second reference object, respectively. In addition, the first driving coil 1321, the second driving coil 1322, and the third driving coil 1323 may correspond to the first reference object, the second reference object, and the third magnetic element 1313, respectively.

[0117] In some embodiments, the first sensing element 1341 and the second sensing element 1342 may include a Hall effect sensor, a magnetoresistance effect sensor (MR Sensor), a giant magnetoresistance effect sensor (GMR Sensor), a tunneling magnetoresistance effect sensor (TMR Sensor), or a fluxgate sensor.

[0118] In some embodiments, the first magnetic element 1311 (first reference) and the first sensing element 1341 may be collectively referred to as a first sensing component, and the second magnetic element 1312 (second reference) and the second sensing element 1342 may be collectively referred to as a second sensing component. The first sensing component may be used to sense the rotation of the movable portion 1200 relative to the fixed portion 1100 with the first rotation axis 1911 as the axis, and the second sensing component may be used to sense the rotation of the movable portion 1200 relative to the fixed portion 1100 with the second rotation axis 1912 as the axis. In some embodiments, the first rotation axis 1911 and the second rotation axis 1912 may not be parallel to each other, for example, they may be perpendicular to each other. In some embodiments, the first rotation axis 1911 may be a point through which the support element 1510 contacts the contact element 1512 and is parallel to the X-axis. In some embodiments, the second rotation axis 1912 may be a point through which the support element 1510 contacts the contact element 1512 and is parallel to the Z-axis.

[0119] In some embodiments, the first magnetic element 1311 (first reference) may have a first magnetic portion 1331 and a second magnetic portion 1332, and the second magnetic element 1312 (second reference) may have a third magnetic portion 1333 and a fourth magnetic portion 1334. In some embodiments, the first magnetic portion 1331 and the second magnetic portion 1332 may be arranged along the first axis 1901, and the third magnetic portion 1333 and the fourth magnetic portion 1334 may be arranged along the second axis 1902. In some embodiments, the first axis 1901 and the second axis 1902 may be parallel to each other, for example, both are parallel to the Y axis.

[0120] In some embodiments, Figure 2C As shown, when observed along the second rotation axis 1912, the line 1920 connecting the center of the second magnetic element 1312 (second reference) and the center of the second sensing element 1342 does not pass through the second rotation axis 1912. In addition, when observed along the second rotation axis 1912, there is a first distance 1921 between the third magnetic portion 1333 and the second rotation axis 1912, and there is a second distance 1922 between the fourth magnetic portion 1334 and the second rotation axis 1912, and the first distance 1921 is different from the second distance 1922, for example, the first distance 1921 may be greater than the second distance 1922. Therefore, on the second axis 1902, the third magnetic portion 1333 and the fourth magnetic portion 1334 may be designed to have different sizes to balance the errors that may be caused by the aforementioned asymmetric condition. Specifically, the maximum size of the third magnetic portion 1333 may be the first size 1931, the maximum size of the fourth magnetic portion 1334 may be the second size 1932, and the first size 1931 and the second size 1932 may be different from each other, for example, the first size 1931 may be larger than the second size 1932. Thus, the sensing error that may be caused by the aforementioned asymmetric condition can be offset.

[0121] In some embodiments, Figure 2B As shown, the center line connecting the first magnetic element 1311 and the first sensing element 1341 (for example, the second rotating shaft 1912) can pass through the first rotating shaft 1911, so there is no asymmetric problem mentioned above. Therefore, on the first axis 1901, the size of the first magnetic part 1331 and the second magnetic part 1332 can be designed to be substantially the same to balance the magnetic fields in all directions and increase the sensing accuracy. In other words, the size difference between the first magnetic part 1331 and the second magnetic part 1332 on the first axis 1901 is different from the size difference between the third magnetic part 1333 and the fourth magnetic part 1334 on the second axis 1902. For example, the size difference between the first magnetic part 1331 and the second magnetic part 1332 on the first axis 1901 can be smaller than the size difference between the third magnetic part 1333 and the fourth magnetic part 1334 on the second axis 1902.

[0122] In some embodiments, Figure 2B As shown, when observing along the first rotation axis 1911, the line connecting the center of the first magnetic element 1311 (first reference object) and the center of the first sensing element 1341 has a third distance from the first rotation axis 1911. When observing along the second rotation axis 1912, as shown Figure 2B As shown, a line 1920 connecting the center of the second magnetic element 1312 (second reference) and the center of the second sensing element 1342 is at a fourth distance 1923 from the second rotation axis 1912, and the third distance may be different from the fourth distance 1923. In some embodiments, the third distance is less than the fourth distance 1923. In some embodiments, the third distance may be zero, for example.

[0123] In some embodiments, Figure 2B , Figure 2C As shown, the shortest distance between the first sensing component and the first rotating shaft 1911 is different from the shortest distance between the second sensing component and the second rotating shaft 1912. For example, the shortest distance between the first sensing component and the first rotating shaft 1911 is Figure 2B The minimum distance between the first magnetic element 1311 and the first rotating shaft 1911 on the Z axis is 1925, and the shortest distance between the second sensing component and the second rotating shaft 1912 is Figure 2C The second distance 1922 in the embodiment of the present invention is different from the minimum distance 1925 and the second distance 1922. In some embodiments, the minimum distance 1925 is smaller than the second distance 1922. By designing the size difference between the third magnetic portion 1333 and the fourth magnetic portion 1334 on the second axis 1902 to be larger, the influence of the sensing error caused by the distance difference can be balanced, thereby obtaining higher driving and sensing accuracy.

[0124] Figure 2D yes Figure 2C Magnified view of area 1940. Figure 3A , Figure 3B , Figure 3C Schematic diagram of some components of the optical element driving mechanism 1000 when viewed from different directions. Figure 2A , Figure 2C , Figure 2D , Figure 3A , Figure 3B , Figure 3C As shown, the optical element driving mechanism 1000 may further include a first adhesive element 1610, a second adhesive element 1620, and a third adhesive element 1630. In some embodiments, the first adhesive element 1610, the second adhesive element 1620, and the third adhesive element 1630 may include adhesive materials such as light curing glue and thermosetting glue. In some embodiments, the first adhesive element 1610 may directly contact the second reinforcing element 1430 and the outer frame 1110 to fix the second reinforcing element 1430 on the outer frame 1110. In some embodiments, the second adhesive element 1620 and the third adhesive element 1630 may be disposed on the same side of the base 1120, and may directly contact the outer frame 1110 and the base 1120 to fix the relative positions of the outer frame 1110 and the base 1120.

[0125] In some embodiments, Figure 2D As shown, the third driving coil 1323 may include a third lead 1353, and the second adhesive element 1620 may not only directly contact the outer frame 1110 and the base 1120, but also directly contact the third lead 1353. For example, the third lead 1353 may be wrapped in the second adhesive element 1620 to protect the third lead 1353, thereby enhancing the durability of the optical element driving mechanism 1000.

[0126] In some embodiments, Figure 3A , Figure 3B , Figure 3C As shown, a plurality of buffer elements 1650 may be provided between the base 1120 and the movable portion 1200 to absorb abnormal vibration when the movable portion 1200 moves relative to the fixed portion 1100. In some embodiments, the buffer elements 1650 may include gel, for example. Figure 3B As shown, part of the buffer element 1650 may be located between the base 1120 and the movable portion 1200 on the Y axis. In some embodiments, when viewed along the Y axis, as shown in FIG. Figure 3C As shown, part of the buffer element 1650 may be located between the base 1120 and the movable portion 1200 on the Z-axis.

[0127] Figure 4A , Figure 4B 1 is a schematic diagram of some components of the optical element driving mechanism 1000 when viewed from different angles. Figure 4A , Figure 4B As shown, the first reinforcing element 1420 may be separated from the second reinforcing element 1430 , for example, the first reinforcing element 1420 and the second reinforcing element 1430 may have a plate-like shape and may have normal vectors in different directions, for example, perpendicular to each other.

[0128] like Figure 4B As shown, when viewed along the third axis 1903, the elastic element 1520 may include a plurality of string portions 1521, a connecting portion 1522, and an opening 1523. The connecting portion 1522 may be used to connect the plurality of string portions 1521, and when viewed along the third axis 1903, the opening 1523 and the connecting portion 1522 may be located on both sides of the supporting element 1510, and the supporting element 1510 and the connecting portion 1522 do not overlap. Thus, the size of the elastic element 1520 near the supporting element 1510 on the Z axis may be reduced, thereby achieving miniaturization.

[0129] In some embodiments, Figure 2B , Figure 2C , Figure 4A , Figure 4B As shown, the reinforcing component 1220 may include a first reinforcing element 1221 and a second reinforcing element 1222 separated from each other, which are respectively arranged in the base 1120 and the substrate 1210, for example, they are respectively partially buried in the base 1120 and the substrate 1210, and can be arranged on both sides of the supporting element 1510 and the contact element 1512 to strengthen the mechanical strength of the base 1120 and the substrate 1210.

[0130] In some embodiments, Figure 2B As shown, the contact element 1512 can directly contact the support element 1510 and the second reinforcement element 1222, for example, it can be fixed on the second reinforcement element 1222, and can move relative to the support element 1510, and the support element 1510 can be fixed on the first reinforcement element 1221. In some embodiments, the support element 1510 can also be fixed on the contact element 1512, and can move relative to the first reinforcement element 1221. In some embodiments, the second reinforcement element 1222 can directly contact the first magnetic element 1311. In some embodiments, the second reinforcement element 1222 and the contact element 1512 can have a plate-like shape, and the second reinforcement element 1222 and the contact element 1512 can have different thicknesses, for example, the thickness of the second reinforcement element 1222 can be less than the thickness of the contact element 1512, so as to strengthen the overall strength of the contact element 1512.

[0131] Figure 5 FIG. 1 is a bottom view of some components of the optical element driving mechanism 1000. In some embodiments, Figure 5As shown, the first reinforcing element 1420 may have a first opening 1421, and the fourth adhesive element 1640 may be disposed in the first opening 1421. The first driving coil 1321 may have a first lead 1351, and when viewed along the main axis 1900, the first lead 1351 may at least partially overlap with the fourth adhesive element 1640, for example, be covered by the fourth adhesive element 1640 to protect the first lead 1351.

[0132] In some embodiments, Figure 5 As shown, when viewed along the main axis 1900, the first reinforcing element 1420 may further have a second opening 1422 and a third opening 1423. The second opening 1422 and the third opening 1423 may expose a portion of the circuit element 1410, for example, may expose a pad on the circuit element 1410, so as to allow welding with the circuit element 1410 through the second opening 1422 and the third opening 1423. In some embodiments, the second opening 1422 and the third opening 1423 may have a long strip shape, for example, the second opening 1422 may extend along the fourth axis 1904, and the third opening 1423 may extend along the third axis 1903. In some embodiments, the third axis 1903 and the fourth axis 1904 are not parallel, for example, they may be perpendicular to each other. In some embodiments, the third axis 1903 may be parallel to the Y axis, and the fourth axis 1904 may be parallel to the X axis.

[0133] Specifically, in some embodiments, Figure 5 As shown, when viewed along the main axis 1900, the second opening 1422 has a second length 1424 on the fourth axis 1904 and a second width 1426 on the third axis 1903, while the third opening 1423 has a third length 1425 on the third axis 1903 and a third width 1427 on the fourth axis 1904, the second length 1424 is greater than the second width 1426, and the third length 1425 is greater than the third width 1427. In some embodiments, the second opening 1422 and the third opening 1423 may also have arc-shaped sides to adapt to the shape of the solder ball.

[0134] Although in the aforementioned embodiment, the reinforcing element 1220 and the contact element 1512 separated from each other are used as the contact surface of the supporting element 1510, the present disclosure is not limited thereto. Fig. 6A is a schematic diagram of an optical element driving mechanism 2000 according to some embodiments of the present disclosure, Figure 6B is a top view of the optical element driving mechanism 2000, Figure 6C It is along Figure 6B The line segment DD shows the cross-sectional view, and Fig.6D is a schematic diagram of some components of the optical element driving mechanism 2000, Fig. 6E2 is a rear side view of some components of the optical element driving mechanism 2000. Components similar to those in the previous embodiment are not described in detail here.

[0135] The main difference between the optical element driving mechanism 2000 and the aforementioned optical element driving mechanism 1000 is that the optical element driving mechanism 2000 replaces the aforementioned second strengthening element 1222 and the contact element 1512 with a second strengthening element 2220, and replaces the elastic element 1520 with an elastic element 2520. Figure 6C , Fig.6D as well as Fig. 6E As shown, in some embodiments, the support element 1510 can be fixed on one of the first reinforcing element 1221 and the second reinforcing element 2220, and can move relative to the other of the first reinforcing element 1221 and the second reinforcing element 2220, so as to allow the movable part 2200 to be movably connected to the fixed part 1100, for example, to move in various dimensions with the support element 1510 as a fulcrum. In some embodiments, the second reinforcing element 2220 can directly contact the support element 1510 and the first magnetic element 1311.

[0136] In addition, the optical element driving mechanism 2000 may have a plurality of elastic elements 2520. Fig. 6E As shown, when viewed along the third axis 1903, the supporting element 1510 has elastic elements 2520 on both sides of the Y axis, and the elastic elements 2520 are separated from each other. In the direction in which the main axis 1900 and the third axis 1903 extend, the supporting element 1510 and the elastic element 2520 do not overlap, so as to reduce the size of the optical element driving mechanism 2000 on the main axis 1900 and the third axis 1903, thereby achieving miniaturization.

[0137] In summary, the embodiments of the present disclosure provide an optical element driving mechanism, including a movable part, a fixed part, and a driving assembly. The movable part is used to connect the optical element. The movable part can move relative to the fixed part. The driving assembly is used to drive the movable part to move relative to the fixed part. In this way, effects such as autofocus, optical image stabilization, and zoom can be achieved, and miniaturization can also be achieved.

[0138] The special relative positions and size relationships of the components disclosed in the present invention not only enable the driving mechanism to be thinner in a specific direction and smaller overall, but also further enhance the optical quality (such as shooting quality or depth sensing accuracy) of the system by matching different optical modules, and further utilize each optical module to achieve a multiple anti-shake system to greatly enhance the anti-shake effect.

[0139] Although the embodiments and advantages of the present disclosure have been disclosed as 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 scope of protection of the present disclosure is not limited to the processes, machines, manufactures, material compositions, devices, methods and steps in the specific embodiments described in the specification, and any technician in the relevant technical field can understand the current or future developed processes, machines, manufactures, material compositions, devices, methods and steps from the disclosure of the present disclosure, as long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can all be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, characterized in that: include: A movable part, including a base and a reinforcing component, for connecting an optical element, wherein the reinforcing component is fixedly disposed on the base; A fixed part, including an outer frame and a base, the movable part can move relative to the fixed part, and the reinforcing component is fixedly arranged on the fixed part; a driving assembly for driving the movable portion to move relative to the fixed portion; as well as A circuit assembly includes a circuit element, a first reinforcing element, and a second reinforcing element. The first reinforcing element is arranged between the base and the circuit element, and the second reinforcing element is arranged between the outer frame and the circuit element.

2. The optical element driving mechanism according to claim 1, wherein: Also included is a first sensing component and a second sensing component, wherein: The first sensing component is used to sense the rotation of the movable part relative to the fixed part with a first rotating shaft as the axis; The first sensing assembly includes a first reference object and a first sensing element; The first sensing element corresponds to the first reference object; The first reference object has a first magnetic portion and a second magnetic portion arranged along a first axis; The second sensing component is used to sense the rotation of the movable part relative to the fixed part with a second rotation axis as the axis; The second sensing assembly includes a second reference object and a second sensing element; The second sensing element corresponds to the second reference object; The second reference object has a third magnetic portion and a fourth magnetic portion arranged along a second axis; On the second axis, a maximum dimension of the third magnetic portion is different from a maximum dimension of the fourth magnetic portion.

3. The optical element driving mechanism according to claim 2, wherein: The first axis is parallel to the second axis; When observed along the second rotation axis, a line connecting the center of the second reference object and the center of the second sensing element does not pass through the second rotation axis; When viewed along the second rotation axis, there is a first distance between the third magnetic portion and the second rotation axis; When viewed along the second rotation axis, there is a second distance between the fourth magnetic portion and the second rotation axis; The first distance is different from the second distance; The size difference between the first magnetic portion and the second magnetic portion on the first axis is different from the size difference between the third magnetic portion and the fourth magnetic portion on the second axis; The shortest distance between the first sensing component and the first rotation axis is different from the shortest distance between the second sensing component and the second rotation axis; When viewed along the first rotation axis, a line connecting the center of the first reference object and the center of the first sensing element has a third distance from the first rotation axis; When viewed along the second rotation axis, a line connecting the center of the second reference object and the center of the second sensing element is at a fourth distance from the second rotation axis; The third distance is different from the fourth distance.

4. The optical element driving mechanism according to claim 3, wherein: On the second axis, the maximum dimension of the third magnetic portion is greater than the maximum dimension of the fourth magnetic portion; The first distance is greater than the second distance; The third distance is smaller than the fourth distance; The size difference between the first magnetic portion and the second magnetic portion on the first axis is smaller than the size difference between the third magnetic portion and the fourth magnetic portion on the second axis; The shortest distance between the first sensing component and the first rotating shaft is smaller than the shortest distance between the second sensing component and the second rotating shaft.

5. The optical element driving mechanism according to claim 2, wherein: in: The first reinforcing element is spaced apart from the second reinforcing element; The first reinforcing element and the second reinforcing element are made of non-magnetic conductive material.

6. The optical element driving mechanism according to claim 5, characterized in that: The invention also includes a first adhesive element, a second adhesive element, a third adhesive element and a fourth adhesive element, wherein: The first adhesive element directly contacts the outer frame and the second reinforcing element; The driving assembly includes a first driving coil, a second driving coil, a third driving coil and a third magnetic element; The first driving coil, the second driving coil, and the third driving coil correspond to the first reference object, the second reference object, and the third magnetic element, respectively; The first driving coil includes a first lead wire; The third driving coil includes a third lead wire; The second driving coil and the third driving coil are arranged on both sides of the movable part; The second adhesive element directly contacts the outer frame, the base and the third lead; The third adhesive element directly contacts the outer frame and the base; The first reinforcing element comprises a first opening when viewed along the major axis; The fourth adhesive element is disposed in the first opening; The fourth adhesive element directly contacts the first driving coil; The fourth adhesive element covers the first lead.

7. The optical element driving mechanism according to claim 5, characterized in that: Observed along the main axis, the first reinforcing element further includes a second opening and a third opening; The second opening extends along a fourth axis; The third opening extends along a third axis; The second axis is parallel to the third axis; The second opening has a second length on the fourth axis and a second width on the third axis; The third opening has a third length on the third axis and a third width on the fourth axis; The second length is greater than the second width; The third length is greater than the third width; The third axis is not parallel to the fourth axis.

8. The optical element driving mechanism according to claim 2, wherein: Also includes an intermediate component, the movable part can move relative to the fixed part via the intermediate component, wherein: The intermediate component includes a supporting element and a contact element; The contact element directly contacts the support element; The hardness of the support element is greater than the hardness of the contact element; The contact element has a metal material; The contact element has a plate-like structure; The contact element is fixedly disposed on the substrate.

9. The optical element driving mechanism according to claim 8, wherein: The hardness of the reinforcing component is greater than the hardness of the substrate; the reinforcing component is at least partially embedded in the substrate; The strengthening component is at least partially embedded in the fixing portion; The reinforcement component is adjacent to the driving component; The magnetic permeability of the reinforcing component is different from the magnetic permeability of the contact element; The magnetic permeability of the strengthening component is greater than the magnetic permeability of the contact element; The reinforcement component has a metal material; The base is made of plastic or rubber.

10. The optical element driving mechanism according to claim 8, wherein: The reinforcement assembly includes a first reinforcement element and a second reinforcement element; The first reinforcement element is spaced apart from the second reinforcement element; The first reinforcement element and the second reinforcement element are arranged on both sides of the supporting element; The contact element is disposed between the support element and the second reinforcement element; The contact element directly contacts the second reinforcing element and the supporting element; The second strengthening element directly contacts the first reference object; The thickness of the second reinforcement element is different from the thickness of the contact element.

11. The optical element driving mechanism according to claim 10, wherein: The thickness of the second strengthening element is smaller than the thickness of the contact element; The optical element driving mechanism further includes an elastic element, which is arranged between the movable part and the fixed part; When viewed along a third axis, the elastic element includes a plurality of string portions, a connecting portion, and an opening; The connecting portion connects a plurality of the string portions; When viewed along the third axis, the opening and the connection portion are located on both sides of the support element; The support element and the connecting portion do not overlap when viewed along the third axis.

12. The optical element driving mechanism according to claim 2, wherein: It also includes a supporting element and a plurality of elastic elements. The reinforcing assembly includes a first reinforcing element and a second reinforcing element, wherein: The movable part can move relative to the fixed part via the supporting element; The first reinforcement element and the second reinforcement element are arranged on both sides of the supporting element; The second reinforcing element directly contacts the supporting element and the first reference; A plurality of elastic elements are arranged between the movable portion and the fixed portion; The plurality of elastic elements are spaced apart from each other.

Images