Optical element driving mechanism

Abstract

An optical element driving mechanism comprises a fixing assembly, a first optical module and a driving assembly. The first optical module comprises a first movable part which is configured to be connected to a first optical element, and the first movable part can move relative to the fixed assembly. The driving assembly is configured to drive the first movable part to move relative to the fixed assembly.

Description

Technical Field

[0001] The utility model relates to an optical element driving mechanism, in particular to a miniaturized and long-focal-length optical element driving mechanism. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones) now have the function of taking photos or recording videos. Through the camera module installed on the electronic device, users can operate the electronic device to capture a variety of photos.

[0003] The design of today's electronic devices continues to trend toward miniaturization, forcing the various components and structures of camera modules to shrink in size to achieve this goal. Generally speaking, the drive mechanism in a camera module may include a lens carrier configured to support a lens, and the drive mechanism may also provide autofocus or optical image stabilization (OIS) functions. However, while existing drive mechanisms can achieve these photo or video recording functions, they still cannot meet all requirements.

[0004] Therefore, how to design a camera module that can simultaneously perform autofocus and optical image stabilization while achieving miniaturization has become a topic worth exploring and solving today. Utility Model Content

[0005] In view of this, the present invention proposes an optical element driving mechanism to solve the above-mentioned problem.

[0006] The utility model provides an optical element driving mechanism, comprising a fixed assembly, a first optical module, and a driving assembly. The first optical module includes a first movable portion configured to be connected to a first optical element and movable relative to the fixed assembly. The driving assembly is configured to drive the first movable portion to move relative to the fixed assembly. The fixing assembly includes a shell and a supporting base; the shell and the supporting base are arranged along a main axis; the shell is fixedly connected to the supporting base; the first optical module further includes a base and a second movable part; the base is arranged on a first supporting surface of the supporting base; the driving assembly includes a first coil and a first magnetic element, configured to drive the second movable part and the first movable part to move along the first axial direction; the driving assembly further includes a second coil and a second magnetic element, configured to drive the first movable part to move along a second axial direction; the second axial direction is perpendicular to the first axial direction and the main axis; when viewed along the main axis, the base has a rectangular structure; the first coil and the second coil are respectively located on a first side and a second side of the rectangular structure; the first magnetic element and the second magnetic element are fixedly arranged on the first movable part

[0007] According to some embodiments of the present invention, the supporting base is configured to support a second optical element and a third optical element. The housing has a housing opening, and an external light is incident on the housing opening from a light incident end. The external light is incident on the second optical element through the housing opening, and then is received by the first optical element after passing through the third optical element. The optical element driving mechanism further includes a first circuit component connected to the first movable part and the supporting base. The first optical element is electrically connected to the first circuit component. The first circuit component has a movable end connected to the first movable part. The movable end is closer to the housing than to the supporting base. The movable end is closer to the light incident end than to the third optical element. When viewed along the first axial direction, the movable end overlaps with at least a portion of the second optical element. The first axial direction is perpendicular to the main axis.

[0008] According to some embodiments of the present invention, the first optical module further includes a third movable part; the driving assembly is configured to drive the second movable part and the first movable part to move relative to the third movable part along the first axial direction; the driving assembly is configured to drive the first movable part to move relative to the second movable part and the third movable part along the second axial direction; the driving assembly is configured to drive the third movable part to drive the first movable part and the second movable part to move along the main axis; the base has a first opening corresponding to the external light passing through the third optical element; the base further has a first groove connected to the first opening; the supporting base and a portion of the third optical element are located in the first groove; the supporting base further has a second supporting surface; the second supporting surface corresponds to a light emitting surface of the third optical element; when viewed along the second axial direction, a first height is formed on the main axis between the first supporting surface and the second supporting surface: when viewed along the second axial direction, the first optical module has a second height; the first height is greater than one third of the second height.

[0009] According to some embodiments of the present invention, when observed along the main axis, the third movable part, the first movable part and at least a portion of the first optical element are exposed from the first groove; when observed along the main axis, the second movable part is shielded by the base; the third movable part has a second opening, a third opening and a second groove; the second opening is connected to the first opening and the second groove, and the third opening is connected to the second groove; the second groove is located in the first groove; the second groove and the first groove together accommodate a portion of the third optical element; the first movable part and at least a portion of the first optical element are exposed from the second groove; the base further has A first bottom surface and a first side bevel; the first side bevel extends obliquely from the first bottom surface; the third movable portion has a second bottom surface and a second side bevel; the second side bevel extends obliquely from the second bottom surface; a gap is formed between the first bottom surface and the second bottom surface; the second side bevel is not aligned with the first side bevel; when viewed along the first axial direction, the second side bevel is shielded by the base; when viewed along the main axis, a portion of the second bottom surface is exposed by the first groove; when viewed along the main axis, the size of the first groove is larger than the size of the second groove; when viewed along the main axis, the size of the first groove is larger than the size of the third opening.

[0010] According to some embodiments of the present invention, the driving assembly further includes a third coil and a third magnetic element, configured to drive the third movable part, the second movable part and the first movable part to move along the main axis; when viewed along the first axial direction, the first coil overlaps with at least a portion of the second optical element; the third coil is located on a third side of the rectangular structure; the second optical element is located on a fourth side of the rectangular structure; the first side and the fourth side are opposite sides of the rectangular structure; the second side and the third side are opposite sides of the rectangular structure.

[0011] According to some embodiments of the present invention, the optical element driving mechanism further includes a second circuit component, which is arranged on the base and located from the first side to the third side; the first optical module further includes a first support member, a second support member and a third support member, which are fixedly arranged on the second circuit component and correspond to the first coil, the second coil and the third coil respectively; the first support member and the second support member are components made of non-magnetic metal material; the third support member is a component made of magnetic metal material.

[0012] According to some embodiments of the present invention, the first optical module further has two first through-holes, which pass through the first support member and the second circuit component; the two first through-holes correspond to the first coil; the first optical module further has two second through-holes, which pass through the second support member and the second circuit component; the two second through-holes correspond to the second coil; the first optical module further has two third through-holes, which pass through the third support member and the second circuit component; the two third through-holes correspond to the third coil.

[0013] According to some embodiments of the present invention, the optical element driving mechanism further includes a first rolling element, which is arranged between the first movable part and the third movable part; the optical element driving mechanism further includes a plurality of second rolling elements, which are arranged between the first movable part and the second movable part; the optical element driving mechanism further includes a plurality of third rolling elements, which are arranged between the second movable part and the third movable part; the second movable part has a base plate and a protrusion; the protrusion protrudes from the base plate toward the first movable part; when viewed along the first axial direction, the protrusion overlaps with at least a portion of the first movable part; the first movable part has a first accommodating groove and a plurality of first grooves; the first accommodating groove is configured to accommodate the first rolling element; the plurality of first grooves are configured to accommodate the plurality of second rolling elements; the second movable part has a plurality of second grooves, which are configured to accommodate the plurality of second rolling elements; the plurality of The extension direction of the second grooves is the same as the extension direction of the multiple first grooves; the second movable part further has multiple third grooves, which are configured to accommodate the multiple third rolling elements; when viewed along the main axis, the second movable part has an L-shaped structure; the third movable part has a second accommodating groove and multiple fourth grooves; the second accommodating groove is configured to accommodate the first rolling element; the multiple fourth grooves are configured to accommodate the multiple third rolling elements; the extension direction of the multiple fourth grooves is the same as the extension direction of the multiple third grooves; the first optical module further includes a first magnetic conductive element and a second magnetic conductive element, which are arranged on the third movable part; the first magnetic conductive element and the second magnetic conductive element correspond to the first magnetic element and the second magnetic element respectively; when viewed along the main axis, the first magnetic conductive element overlaps with the first magnetic element; when viewed along the main axis, the second magnetic conductive element overlaps with the second magnetic element.

[0014] According to some embodiments of the present invention, the shell is a shell made of non-magnetic material; the shell covers the first optical element and at least a portion of the second optical element; the shell has a first top wall, a second top wall and an inclined wall; the inclined wall is connected between the first top wall and the second top wall; the angle between the inclined wall and the second top wall is between 30 and 60 degrees; the second top wall forms the shell opening, and a portion of the second optical element is arranged in the shell opening; the optical element driving mechanism further includes a second optical module, which is arranged on the second top wall and surrounds a portion of the second optical element; when viewed along the main axis, the first optical element overlaps with the first top wall; when viewed along the main axis, the first top wall completely covers the first optical element; on the main axis, there is a first distance between the first top wall and the second bearing surface; on the main axis, there is a second distance between the second top wall and the second bearing surface; the first distance is greater than the second distance.

[0015] According to some embodiments of the present invention, the optical element driving mechanism further includes a first electrical component, a second electrical component and a third electrical component, which are partially arranged on the supporting base; the first circuit component further has a fixed end portion, which is fixed to the supporting base and electrically connected to the first electrical component; the second top wall of the shell is further formed with a side opening, which is arranged on one side of the shell opening; the second electrical component is exposed from the side opening; the second optical module is electrically connected to the second electrical component via the side opening; the optical The optical element driving mechanism further includes a second circuit component, which is arranged on the first optical module and electrically connected to the driving component; the second circuit component is electrically connected to the third electrical component; the optical element driving mechanism further includes a plurality of electrical pins, which are partially arranged in the supporting base; the first electrical component, the second electrical component and the third electrical component are electrically connected to an external circuit via the plurality of electrical pins; when viewed along the main axis, the supporting base has a rectangular structure; the plurality of electrical pins are located on a long side of the rectangular structure.

[0016] The utility model provides an optical element driving mechanism, comprising a fixing assembly, a first optical module, a second optical module, and a driving assembly. The first optical module is configured to be connected to a first optical element, and the driving assembly is configured to drive multiple movable parts within the first optical module to drive the first optical element to move, thereby achieving the purposes of autofocus and optical image stabilization.

[0017] Furthermore, the supporting base of the fixed assembly is configured to support the second and third optical elements. It is worth noting that the first, second, and third optical elements are not arranged in a straight line. When viewed along the principal axis, the third optical element overlaps a portion of the first optical element and also overlaps a portion of the second optical element. When viewed along the first axial direction, the first optical element overlaps a portion of the second optical element.

[0018] This configuration effectively reduces the overall height of the optical element drive mechanism. Furthermore, the base of the first optical module may include a first recess for accommodating the supporting base and a portion of the third optical element. In other words, when the first optical module is mounted on the supporting base, the overall height of the optical element drive mechanism can be further reduced, further achieving miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be more clearly understood through the detailed description that follows in conjunction with the accompanying illustrations. It should be emphasized that, in accordance with standard industry practice, various features are not drawn to scale and are used for illustrative purposes only. In fact, the dimensions of various features may be arbitrarily enlarged or reduced for clarity of illustration.

[0020] Figure 1 FIG. 1 is a perspective schematic diagram of an optical element driving mechanism 10 according to an embodiment of the present invention.

[0021] Figure 2 FIG. 1 is an exploded view of an optical element driving mechanism 10 according to an embodiment of the present invention.

[0022] Figure 3 The optical element driving mechanism 10 according to one embodiment of the present invention is Figure 1 Sectional view of line segment AA.

[0023] Figure 4 FIG. 1 is an exploded view of the first optical module 100 according to an embodiment of the present invention.

[0024] Figure 5 FIG. 1 is a bottom view of a partial structure of an optical element driving mechanism 10 according to an embodiment of the present invention.

[0025] Figure 6 FIG. 1 is a perspective view of the first optical module 100 according to an embodiment of the present invention from another perspective.

[0026] Figure 7 The first optical module 100 according to an embodiment of the present invention is Figure 6 Cross-sectional view of line segment BB.

[0027] Figure 8 The first optical module 100 according to an embodiment of the present invention is Figure 6 Cross-sectional view of the CC segment.

[0028] Figure 9 FIG. 1 is a bottom view of a partial structure of a first optical module 100 according to an embodiment of the present invention.

[0029] Figure 10 FIG. 1 is a perspective view of the first optical module 100 according to an embodiment of the present invention from another perspective.

[0030] Figure 11 FIG. 1 is a front view of the first optical module 100 after being turned upside down according to an embodiment of the present invention.

[0031] The description of the accompanying drawings is as follows:

[0032] 10: Optical element drive mechanism

[0033] 11: Shell

[0034] 11H: Shell opening

[0035] 11P: side opening

[0036] 12: Bearing base

[0037] 100: First optical module

[0038] 104: Framework

[0039] 107: First Activity Department

[0040] 1071: First receiving tank

[0041] 1072: First groove

[0042] 108: Second Activity Department

[0043] 1080: Bottom plate

[0044] 1081: Protrusion

[0045] 1082: Second groove

[0046] 1083: Third Groove

[0047] 109: The Third Activity Department

[0048] 1091: Second opening

[0049] 1092: The third opening

[0050] 1093: Second groove

[0051] 1094: Second bottom

[0052] 1095: Second side bevel

[0053] 1097: Second storage tank

[0054] 1098: The Fourth Groove

[0055] 112: Base

[0056] 1121: First opening

[0057] 1122: First groove

[0058] 1123: First bottom surface

[0059] 1124: First side bevel

[0060] 114: Second circuit component

[0061] 1141: Electrical contacts

[0062] 115: Guide element

[0063] 121: First bearing surface

[0064] 122: Second bearing surface

[0065] 131: First support member

[0066] 131H: First perforation

[0067] 132: Second support member

[0068] 132H: Second perforation

[0069] 133: The third support

[0070] 133H: Third perforation

[0071] 141: First rolling element

[0072] 142: Second rolling element

[0073] 143: Third rolling element

[0074] 145: First magnetic conductive element

[0075] 146: Second magnetic conductive element

[0076] 150: First circuit component

[0077] 151: Active end

[0078] 152: Fixed end

[0079] 153: Cantilever

[0080] 161: First electrical component

[0081] 162: Second electrical component

[0082] 163: Third electrical component

[0083] 164: Electrical pin

[0084] 200: Second optical module

[0085] AX1: first axis

[0086] AX2: Second axis

[0087] CL1: First coil

[0088] CL2: Second coil

[0089] CL3: Third coil

[0090] DA: Drive Assembly

[0091] DS1: First Distance

[0092] DS2: Second Distance

[0093] FA: Fixed assembly

[0094] HT1: First Height

[0095] HT2: Second Height

[0096] LIT: Light incident end

[0097] LS: Long Side

[0098] LT: External Light

[0099] ME1: First magnetic element

[0100] ME2: Second magnetic element

[0101] ME3: Third magnetic element

[0102] MX: Spindle

[0103] O: Optical axis

[0104] OE1: First Optical Element

[0105] OE2: Second Optical Element

[0106] OE3: Third Optical Element

[0107] OE31: light-emitting surface

[0108] SS1: First side

[0109] SS2: Second side

[0110] SS3: Third Side

[0111] SS4: Fourth Side

[0112] TW1: First top wall

[0113] TW2: Second top wall

[0114] TW3: inclined wall

[0115] X: X-axis

[0116] Y: Y axis

[0117] Z: Z axis DETAILED DESCRIPTION

[0118] The following discloses many different implementation methods or examples 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 invention. Of course, these embodiments are only for illustration and should not be used to limit the scope of the present invention. For example, when the specification mentions that a first feature component is formed on a second feature component, it may include an embodiment in which the first feature component and the second feature component are in direct contact. It may also include an embodiment in which there are other features between the first feature component and the second feature component. In other words, the first feature component and the second feature component are not in direct contact.

[0119] In addition, repeated numbers or marks may be used in different embodiments. These repetitions are only for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed. In addition, in the present invention, forming, connecting and / or coupling to another feature component on top of another feature component may include embodiments in which the feature components are formed to be in direct contact, and may also include embodiments in which additional feature components can be formed to be inserted into the above-mentioned feature components, so that the above-mentioned feature components may not be in direct contact. In addition, spatially related words such as "vertical", "above", "up", "below", "bottom" and similar words (such as "downwardly", "upwardly", etc.) may be used. These spatially related words are for the purpose of facilitating the description of the relationship between one (or some) element or feature and another (or some) element or feature in the diagram. These spatially related words are intended to cover different directions of the device including the feature.

[0120] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill 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 that is consistent with the background or context of the relevant technology and the present invention, and should not be interpreted in an idealized or overly formal manner unless otherwise defined herein.

[0121] Furthermore, the use of ordinal numbers such as "first" and "second" in the specification and claims to modify claim elements does not in itself imply or represent any previous ordinal number of the claimed element, nor does it represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of such ordinal numbers is only used to clearly distinguish a claimed element with a certain name from another claimed element with the same name.

[0122] Furthermore, in some embodiments of the present invention, terms such as "connected" and "interconnected," unless otherwise specified, may refer to two structures being in direct contact, or may refer to two structures not being in direct contact, with another structure positioned between the two structures. Furthermore, such terms may include situations where both structures are movable or both structures are fixed.

[0123] Please refer to Figures 1 to 3 , Figure 1 FIG. 1 is a perspective diagram of an optical element driving mechanism 10 according to an embodiment of the present invention. Figure 2 is an exploded view of an optical element driving mechanism 10 according to an embodiment of the present invention, and Figure 3 The optical element driving mechanism 10 according to one embodiment of the present invention is Figure 1 Cross-sectional view of the AA line segment. The optical element driving mechanism 10 can be an optical camera module configured to carry and drive at least one optical element. The optical element driving mechanism 10 can be installed in various electronic devices or portable electronic devices, such as a smartphone, to allow the user to perform image capture functions. In this embodiment, the optical element driving mechanism 10 can be a voice coil motor (VCM) with an autofocus (AF) function, but the present invention is not limited to this. In other embodiments, the optical element driving mechanism 10 can also have autofocus (AF) and optical image stabilization (OIS) functions.

[0124] In this embodiment, the optical element driving mechanism 10 may include a fixing assembly FA, ​​a first optical module 100, a second optical module 200, and a first circuit assembly 150. The fixing assembly FA includes a housing 11 and a supporting base 12, and the housing 11 and the supporting base 12 are arranged along a principal axis MX. Specifically, the housing 11 is fixedly connected to the supporting base 12.

[0125] like Figure 2 As shown, the first optical module 100 may include a first movable portion 107 configured to be connected to a first optical element OE1, and the first movable portion 107 may be movable relative to the fixing assembly FA. The first optical element OE1 may be, for example, an image sensor, but is not limited thereto.

[0126] In this embodiment, the first circuit assembly 150 may be a flexible circuit board connected to the first movable portion 107 and the supporting base 12. The first circuit assembly 150 may have a movable end portion 151 connected to the first movable portion 107, and the first optical element OE1 is electrically connected to the first circuit assembly 150. Specifically, the first optical element OE1 is disposed at the bottom of the movable end portion 151.

[0127] Furthermore, the first circuit assembly 150 may further include a fixed end portion 152 and two cantilevers 153. The fixed end portion 152 is fixed to the supporting base 12, and the two cantilevers 153 are connected between the movable end portion 151 and the fixed end portion 152. When the first movable portion 107 moves, the movable end portion 151 and the first optical element OE1 may move relative to the fixed end portion 152 along with the first movable portion 107.

[0128] like Figure 2 and Figure 3 As shown, the supporting base 12 is configured to support a second optical element OE2 and a third optical element OE3. The second optical element OE2 is, for example, a fixed lens, and the third optical element OE3 is, for example, a prism, but is not limited thereto.

[0129] like Figure 2 and Figure 3 As shown, the housing 11 may have a housing opening 11H, and external light LT is incident from a light incident end LIT along an optical axis O into the housing opening 11H. The optical axis O is, for example, parallel to or overlapping with the principal axis MX, but is not limited thereto. After the external light LT enters the second optical element OE2 through the housing opening 11H, it is then reflected by the third optical element OE3 and finally received by the first optical element OE1 to generate a digital image signal.

[0130] In addition, in this embodiment, the housing 11 can be made of a non-magnetic material, such as a plastic material, but is not limited thereto. Figure 3 As shown, the housing 11 covers at least a portion of the first optical element OE1 and the second optical element OE2.

[0131] The housing 11 may have a first top wall TW1 and a second top wall TW2 , and the second optical module 200 is disposed on the second top wall TW2 and surrounds a portion of the second optical element OE2 .

[0132] The second optical module 200 is, for example, an aperture module that can adjust the amount of external light LT entering, but is not limited thereto. Furthermore, the second top wall TW2 is formed with the aforementioned housing opening 11H, and a portion of the second optical element OE2 is disposed within the housing opening 11H.

[0133] Furthermore, if Figure 3 As shown, the housing 11 may further include an inclined wall TW3 connected between the first top wall TW1 and the second top wall TW2. The angle between the inclined wall TW3 and the second top wall TW2 is between 30 and 60 degrees, but is not limited thereto. The inclined wall TW3, the first top wall TW1, and the second top wall TW2 may be integrally formed.

[0134] like Figure 3As shown, when viewed along the main axis MX, the first optical element OE1 overlaps the first top wall TW1 , and when viewed along the main axis MX, the first top wall TW1 completely covers the first optical element OE1 .

[0135] like Figure 3 As shown, the supporting base 12 has a first supporting surface 121 and a second supporting surface 122. The base 112 is disposed on the first supporting surface 121, and the second optical module 200 is disposed on the second supporting surface 122. On the main axis MX, a first distance DS1 is defined between the first top wall TW1 and the second supporting surface 122. On the main axis MX, a second distance DS2 is defined between the second top wall TW2 and the second supporting surface 122. The first distance DS1 is greater than the second distance DS2.

[0136] In addition, if Figure 3 As shown, the movable end portion 151 is closer to the housing 11, that is, closer to the first top wall TW1, than the supporting base 12. Furthermore, the movable end portion 151 is closer to the light incident end LIT (in the direction of the principal axis MX) than to the third optical element OE3. When viewed along a first axial direction AX1, the movable end portion 151 overlaps at least a portion of the second optical element OE2. The first axial direction AX1 is perpendicular to the principal axis MX.

[0137] Based on the above structural design and component configuration, the overall height of the optical element driving mechanism 10 on the main axis MX (on the Z axis) can be reduced to achieve the purpose of miniaturization.

[0138] Please refer to Figure 3 and Figure 4 , Figure 4 This is an exploded view of a first optical module 100 according to one embodiment of the present invention. In this embodiment, the first optical module 100 further includes a frame 104, a base 112, a second movable portion 108, and a third movable portion 109. The frame 104 is fixed to the base 112 and houses the plurality of movable portions. The fixing assembly FA may further include the frame 104 and the base 112.

[0139] Furthermore, the first optical module 100 of the optical element driving mechanism 10 further includes a driving assembly DA configured to drive the first movable portion 107 to move relative to the fixed assembly FA. Specifically, the driving assembly DA is configured to drive the first movable portion 107 to move relative to the second movable portion 108 and the third movable portion 109 along a second axis AX2. The second axis AX2 is perpendicular to the first axis AX1 and the main axis MX.

[0140] In this embodiment, the driving assembly DA may include a second coil CL2 and a second magnetic element ME2, configured to generate a second electromagnetic driving force to drive the first movable portion 107 to move along the second axis AX2.

[0141] On the other hand, the driving component DA can be configured to drive the second movable part 108 and the first movable part 107 to move along the first axis AX1 relative to the third movable part 109. Specifically, the driving component DA can further include a first coil CL1 and a first magnetic element ME1, configured to generate a first electromagnetic driving force to drive the second movable part 108 and the first movable part 107 to move along the first axis AX1.

[0142] Furthermore, the driving assembly DA can be configured to drive the third movable portion 109 to drive the first movable portion 107 and the second movable portion 108 to move along the main axis MX. Specifically, the driving assembly DA includes a third coil CL3 and a third magnetic element ME3, configured to generate a third electromagnetic driving force to drive the third movable portion 109, the second movable portion 108, and the first movable portion 107 to move along the main axis MX.

[0143] like Figure 4 As shown, the first optical module 100 may further include two guiding elements 115 fixedly disposed on the base 112 and configured to guide the third movable portion 109 to move along the main axis MX. The guiding element 115 is, for example, a metal cylinder, but is not limited thereto.

[0144] In this embodiment, the first optical module 100 may further include a second circuit component 114 disposed on the base 112, and the first coil CL1, the second coil CL2, and the third coil CL3 are disposed on the second circuit component 114. The second circuit component 114 is, for example, but not limited to, a flexible circuit board.

[0145] Correspondingly, the first magnetic element ME1 and the second magnetic element ME2 are disposed on the first movable portion 107, and the third magnetic element ME3 is disposed on the third movable portion 109. The first magnetic element ME1, the second magnetic element ME2, and the third magnetic element ME3 are magnets, for example, but not limited thereto.

[0146] Then, if Figure 3 and Figure 4 As shown, the base 112 may have a first opening 1121 corresponding to the external light LT passing through the third optical element OE3. The base 112 may further have a first groove 1122 connected to the first opening 1121, and a portion of the supporting base 112 and the third optical element OE3 may be located in the first groove 1122.

[0147] like Figure 3 As shown, the second supporting surface 122 corresponds to a light emitting surface OE31 of the third optical element OE3 . For example, the light emitting surface OE31 is substantially flush with the second supporting surface 122 , but is not limited thereto.

[0148] like Figure 3 As shown, when viewed along the second axial direction AX2 (X axis), a first height HT1 is formed between the first bearing surface 121 and the second bearing surface 122 on the main axis MX, and when viewed along the second axial direction AX2, the first optical module 100 has a second height HT2.

[0149] In this embodiment, the first height HT1 is greater than the second height HT2. For example, the first height HT1 is greater than one-third of the second height HT2. Figure 3 As shown, when viewed along the first axial direction AX1, the first coil CL1 overlaps at least a portion of the second optical element OE2.

[0150] That is, when the first optical module 100 is disposed on the supporting base 12 , based on the above structural design, the overall height of the optical element driving mechanism 10 can be reduced, thereby further achieving the purpose of miniaturization.

[0151] Please refer to Figures 3 to 5 . Figure 5 FIG. 1 is a bottom view of a partial structure of an optical element driving mechanism 10 according to an embodiment of the present invention. Figure 5 As shown, when viewed along the main axis MX, the base 112 has a substantially rectangular structure, and the first coil CL1, the second coil CL2, and the third coil CL3 are respectively located on a first side SS1, a second side SS2, and a third side SS3 of the rectangular structure. It should be noted that in order to clearly illustrate the internal structure of the first optical module 100, Figure 5 The base 112 is indicated by dotted lines, but this does not mean that it does not exist. The same applies to the components indicated by dotted lines in subsequent figures.

[0152] like Figure 5 As shown, the second optical element OE2 is located at a fourth side SS4 of the rectangular structure, that is, the second optical element OE2 is located at Figure 5 The right side of the middle base 112. The first side SS1 and the fourth side SS4 are opposite sides of the rectangular structure, and the second side SS2 and the third side SS3 are opposite sides of the rectangular structure.

[0153] It is worth noting that the third coil CL3 for driving the third movable part 109 will not be arranged on the first side SS1 to ensure that the arrangement of the first coil CL1 and the second coil CL2 can drive the first movable part 107 to move along the first axis AX1 and / or the second axis AX2.

[0154] Furthermore, please refer to Figures 4 to 6 . Figure 6 FIG. 1 is a perspective view of the first optical module 100 according to an embodiment of the present invention from another perspective. Figures 4 to 6 As shown, the second circuit component 114 is disposed on the base 112 in a bent manner and is located from the first side SS1 to the third side SS3 .

[0155] In order to increase the overall structural strength of the second circuit component 114, the first optical module 100 may further include a first support member 131, a second support member 132 and a third support member 133, which are fixedly arranged on the second circuit component 114 and correspond to the first coil CL1, the second coil CL2 and the third coil CL3 respectively.

[0156] It is worth noting that the third support member 133 is made of a magnetically conductive metal material. Therefore, the third support member 133 can generate a magnetic attraction with the third magnetic element ME3, driving the third movable portion 109 toward the guide element 115, thereby ensuring that the third movable portion 109 does not tilt when moving along the main axis MX.

[0157] In addition, the first support member 131 and the second support member 132 are made of non-magnetic metal material to avoid interference with the first magnetic element ME1 and the second magnetic element ME2 , thereby ensuring that the first movable portion 107 can move smoothly along the first axis AX1 or the second axis AX2 .

[0158] Then, if Figure 4 and Figure 6 As shown, the first optical module 100 further has two first through holes 131H passing through the first support member 131 and the second circuit component 114 , and the two first through holes 131H correspond to the first coil CL1 .

[0159] Similarly, the first optical module 100 may further have two second through holes 132H passing through the second support member 132 and the second circuit component 114 , and the two second through holes 132H correspond to the second coil CL2 .

[0160] Furthermore, the first optical module 100 may further have two third through holes 133H passing through the third support member 133 and the second circuit component 114, and these two third through holes 133H correspond to the third coil CL3.

[0161] Based on the configuration of the above-mentioned through-holes, it is easier to install the first coil CL1, the second coil CL2 and the third coil CL3 on the second circuit component 114 by using a tool through the through-holes, and the positioning accuracy is also increased.

[0162] Then return to Figure 2 、 Figure 3 as well as Figure 6 .like Figure 3 As shown, the optical element driving mechanism 10 further includes at least one first electrical component 161, at least one second electrical component 162, and at least one third electrical component 163, which are partially disposed on the supporting base 12. For example, the first electrical component 161, the second electrical component 162, and the third electrical component 163 are disposed in the supporting base 12 by insert molding technology.

[0163] It should be noted that the number of the first electrical component 161, the second electrical component 162 and the third electrical component 163 is not limited to Figure 3 Furthermore, if Figure 2 As shown, the optical element driving mechanism 10 further includes a plurality of electrical pins 164 (pins), which are partially disposed in the supporting base 12 , and the electrical pins 164 are electrically connected to the aforementioned plurality of electrical components.

[0164] like Figure 3 As shown, the fixed end portion 152 is electrically connected to at least one first electrical component 161 , so that the first optical element OE1 can be electrically connected to the at least one first electrical component 161 via the first circuit assembly 150 .

[0165] Furthermore, if Figure 2 As shown, the second top wall TW2 of the housing 11 is further formed with two side openings 11P, which are arranged on one side of the housing opening 11H, and the plurality of second electrical components 162 are exposed from the two side openings 11P. Figure 3 As shown, the second optical module 200 can be electrically connected to the second electrical components 162 via the two side openings 11P, for example, by welding.

[0166] Then, if Figure 3 and Figure 6 As shown, the second circuit assembly 114 has a plurality of electrical contacts 1141 configured to be electrically connected to a plurality of third electrical components 163 , such that the plurality of coils of the driving assembly DA are electrically connected to the third electrical components 163 .

[0167] The first electrical component 161, the second electrical component 162, and the third electrical component 163 can be electrically connected to an external circuit via the electrical pins 164. The external circuit can be, for example, a control circuit on a motherboard of a portable electronic device, which can send control signals to control the operation of the first optical module 100, the second optical module 200, and the first optical element OE1.

[0168] It is worth noting that if Figure 2 As shown, when viewed along the main axis MX, the supporting base 12 can have a rectangular structure, and the electrical pins 164 are located on a long side LS of the rectangular structure. Based on this design, the optical element driving mechanism 10 can be installed on the main board of the portable electronic device with increased convenience and space utilization.

[0169] Please continue to refer to Figure 4 、 Figure 7 and Figure 8 . Figure 7 The first optical module 100 according to an embodiment of the present invention is Figure 6 The cross-sectional view of the BB segment, and Figure 8 The first optical module 100 according to an embodiment of the present invention is Figure 6 In this embodiment, as shown in FIG. Figure 4 and Figure 7 As shown, the first optical module 100 may further include a first rolling element 141 disposed between the first movable portion 107 and the third movable portion 109 .

[0170] Similarly, Figure 4 and Figure 8 As shown, the first optical module 100 may further include a plurality of second rolling elements 142 disposed between the first movable portion 107 and the second movable portion 108, and the first optical module 100 may further include a plurality of third rolling elements 143 disposed between the second movable portion 108 and the third movable portion 109. In this embodiment, the first optical module 100 may include three second rolling elements 142 and three third rolling elements 143, but the number is not limited to this embodiment.

[0171] like Figure 8 As shown, the second movable portion 108 has a bottom plate 1080 and two protrusions 1081, and the protrusions 1081 protrude from the bottom plate 1080 toward the first movable portion 107. When viewed along the first axis AX1, the protrusions 1081 overlap at least a portion of the first movable portion 107.

[0172] Based on such a structural configuration, the overall height of the first optical module 100 on the Z axis can be effectively reduced to achieve the purpose of miniaturization.

[0173] Furthermore, if Figure 7 and Figure 8 As shown, the first movable portion 107 has a first receiving groove 1071 and three first grooves 1072 . The first receiving groove 1071 is configured to receive the first rolling element 141 , and the first grooves 1072 are configured to receive the second rolling element 142 .

[0174] Correspondingly, the second movable portion 108 has three second grooves 1082 configured to accommodate the second rolling elements 142. The second grooves 1082 extend in the same direction as the first grooves 1072, for example, along the second axial direction AX2.

[0175] Furthermore, the second movable portion 108 further has three third grooves 1083 configured to accommodate the third rolling elements 143, and as shown in FIG. Figure 4 As shown, the second movable portion 108 has an L-shaped structure when viewed along the major axis MX.

[0176] Correspondingly, the third movable portion 109 may have a second receiving groove 1097 and three fourth grooves 1098 . The second receiving groove 1097 is configured to receive the first rolling element 141 , and the fourth grooves 1098 are configured to receive the third rolling elements 143 .

[0177] The fourth grooves 1098 extend in the same direction as the third grooves 1083, for example, along the first axial direction AX1. It is worth noting that the first receiving groove 1071 and the second receiving groove 1097 are, for example, square grooves, and their dimensions are larger than the first rolling element 141, allowing the first rolling element 141 to roll freely in the XY plane.

[0178] In addition, there may be a gap between the first rolling element 141 and the first movable portion 107 to prevent the first movable portion 107 from being unable to move smoothly relative to the third movable portion 109 due to manufacturing tolerance.

[0179] Next, please refer to Figure 4 and Figure 9 . Figure 9 FIG. 1 is a bottom view of a portion of the first optical module 100 according to an embodiment of the present invention. In this embodiment, the first optical module 100 may further include a first magnetic conductive element 145 and a second magnetic conductive element 146 disposed on the third movable portion 109 .

[0180] The first magnetic conductive element 145 and the second magnetic conductive element 146 correspond to the first magnetic element ME1 and the second magnetic element ME2 respectively. Figure 9As shown, when viewed along the main axis MX, the first magnetic conductive element 145 overlaps the first magnetic element ME1 , and when viewed along the main axis MX, the second magnetic conductive element 146 overlaps the second magnetic element ME2 .

[0181] Based on such a configuration, a magnetic attraction force is generated between the first magnetic conductive element 145 and the first magnetic element ME1, and another magnetic attraction force is generated between the second magnetic conductive element 146 and the second magnetic element ME2, so that the first movable part 107 approaches the third movable part 109 to clamp the second movable part 108, thereby ensuring that the first movable part 107 and the second movable part 108 can move smoothly relative to the third movable part 109.

[0182] Next, please refer to Figure 10 as well as Figure 11 . Figure 10 is a perspective view of the first optical module 100 according to an embodiment of the present invention at another viewing angle, and Figure 11 FIG. 1 is a front view of the first optical module 100 according to an embodiment of the present invention after being turned upside down. Figure 10 As shown, when viewed along the major axis MX, the third movable portion 109 , the first movable portion 107 and at least a portion of the first optical element OE1 are exposed from the first groove 1122 .

[0183] Furthermore, when viewed along the main axis MX, the second movable portion 108 is shielded by the base 112. Figure 10 The second movable portion 108 can be seen from the perspective of FIG, but in fact the second movable portion 108 is inside the third movable portion 109, so when viewed along the main axis MX, the second movable portion 108 will be obscured.

[0184] Similar to the structural design of the base 112, the third movable portion 109 may have a second opening 1091, a third opening 1092, and a second groove 1093. The second opening 1091 is connected to the first opening 1121 and the second groove 1093, and the first opening 1121 and the second opening 1091 face the third optical element OE3.

[0185] The second groove 1093 is located in the first groove 1122 , and the first groove 1122 and the second groove 1093 are recessed toward the first optical element OE1 , so that the second groove 1093 and the first groove 1122 can jointly accommodate a portion of the third optical element OE3 .

[0186] The third opening 1092 is located within and communicates with the second groove 1093. When viewed along the principal axis MX, the first groove 1122 is larger than the second groove 1093. Furthermore, when viewed along the principal axis MX, the first groove 1122 is larger than the third opening 1092. Based on the above configuration, at least a portion of the first movable portion 107 and the first optical element OE1 are exposed from the second groove 1093.

[0187] It is worth noting that Figure 10 and Figure 11 As shown, the base 112 further has a first bottom surface 1123 and a first side inclined surface 1124 , and the first side inclined surface 1124 is obliquely extended from the first bottom surface 1123 .

[0188] Similarly, the third movable portion 109 has a second bottom surface 1094 and a second side inclined surface 1095 , and the second side inclined surface 1095 is obliquely extended from the second bottom surface 1094 .

[0189] In this embodiment, the first bottom surface 1123 corresponds to the second bottom surface 1094 , and a gap is formed between the first bottom surface 1123 and the second bottom surface 1094 , so that the third movable portion 109 has enough space to move along the main axis MX.

[0190] The first side bevel 1124 corresponds to the second side bevel 1095, and as shown in FIG. Figure 11 As shown, the second side bevel 1095 is not aligned with the first side bevel 1124 . That is, when viewed along the first axis AX1 , the second side bevel 1095 does not overlap with the first side bevel 1124 , and the second side bevel 1095 is hidden by the base 112 .

[0191] Furthermore, if Figure 10 As shown, when viewed along the major axis MX, a portion of the second bottom surface 1094 is exposed by the first groove 1122. Based on the structural design of the first bottom surface 1123, the second bottom surface 1094, the first side bevel 1124, and the second side bevel 1095, unnecessary stray light can be blocked from entering the first optical element OE1, thereby ensuring the quality of the digital image produced by the first optical element OE1.

[0192] The present invention provides an optical element driving mechanism 10 comprising a fixing assembly FA, ​​a first optical module 100, a second optical module 200, and a driving assembly DA. The first optical module 100 is configured to be connected to a first optical element OE1, and the driving assembly DA is configured to drive multiple movable parts within the first optical module 100 to move the first optical element OE1, thereby achieving autofocus and optical image stabilization.

[0193] Furthermore, the supporting base 12 of the fixing assembly FA is configured to support the second optical element OE2 and the third optical element OE3. It is worth noting that the first optical element OE1, the second optical element OE2, and the third optical element OE3 are not arranged in a straight line. When viewed along the principal axis MX, the third optical element OE3 overlaps a portion of the first optical element OE1 and also overlaps a portion of the second optical element OE2. When viewed along the first axial direction AX1, the first optical element OE1 overlaps a portion of the second optical element OE2.

[0194] This configuration effectively reduces the overall height of the optical element driving mechanism 10. Furthermore, the base 112 of the first optical module 100 may include a first recess 1122 to accommodate the supporting base 12 and a portion of the third optical element OE3. In other words, when the first optical module 100 is mounted on the supporting base 12, the overall height of the optical element driving mechanism 10 can be further reduced, further achieving miniaturization.

[0195] Although the embodiments of the present invention and their advantages have been disclosed above, it should be understood that anyone with ordinary knowledge in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present invention. In addition, the scope of protection of the present invention is not limited to the processes, machines, manufacturing, material compositions, devices, methods and steps in the specific embodiments described in the specification. Anyone with ordinary knowledge in the art can understand from the disclosure of the present invention that the processes, machines, manufacturing, material compositions, devices, methods and steps currently or in the future can be developed. As long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can all be used according to the present invention. Therefore, the scope of protection of the present invention includes the above-mentioned processes, machines, manufacturing, material compositions, devices, methods and steps. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present invention also includes the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, characterized in that: include: a fixing component; a first optical module comprising a first movable portion configured to be connected to a first optical element, and wherein the first movable portion is movable relative to the fixed assembly; and a driving assembly configured to drive the first movable portion to move relative to the fixed assembly; The fixing assembly includes a shell and a bearing base; The housing and the supporting base are arranged along a main axis; The housing is fixedly connected to the supporting base; The first optical module also includes a base and a second movable portion; The base is disposed on a first bearing surface of the bearing base; The driving assembly includes a first coil and a first magnetic element, configured to drive the second movable portion and the first movable portion to move along a first axial direction; The driving assembly further includes a second coil and a second magnetic element, configured to drive the first movable portion to move along a second axial direction; The second axial direction is perpendicular to the first axial direction and the main axis; When viewed along the major axis, the base has a rectangular structure; The first coil and the second coil are respectively located on a first side and a second side of the rectangular structure; The first magnetic element and the second magnetic element are fixedly arranged on the first movable part.

2. The optical element driving mechanism according to claim 1, wherein: The supporting base is configured to support a second optical element and a third optical element; The housing has a housing opening, and an external light is incident into the housing opening from a light incident end; The external light is incident on the second optical element through the opening of the housing, and then passes through the third optical element before being received by the first optical element; The optical element driving mechanism further includes a first circuit component connected to the first movable portion and the supporting base; The first optical element is electrically connected to the first circuit component; The first circuit component has a movable end portion connected to the first movable portion; The movable end portion is closer to the housing than the supporting base; The movable end portion is closer to the light incident end than the third optical element; When viewed along the first axial direction, the movable end portion overlaps at least a portion of the second optical element; The first axial direction is perpendicular to the main axis.

3. The optical element driving mechanism according to claim 2, wherein: The first optical module further includes a third movable portion; The driving assembly is configured to drive the second movable portion and the first movable portion to move along the first axial direction relative to the third movable portion; The driving assembly is configured to drive the first movable portion to move relative to the second movable portion and the third movable portion along the second axial direction; The driving assembly is configured to drive the third movable portion to drive the first movable portion and the second movable portion to move along the main axis; The base has a first opening corresponding to the external light passing through the third optical element; The base further has a first groove connected to the first opening; The supporting base and a portion of the third optical element are located in the first groove; The bearing base further has a second bearing surface; The second bearing surface corresponds to a light emitting surface of the third optical element; When viewed along the second axial direction, a first height is formed between the first bearing surface and the second bearing surface on the main axis: When viewed along the second axis, the first optical module has a second height; The first height is greater than one third of the second height.

4. The optical element driving mechanism according to claim 3, wherein: When viewed along the main axis, the third movable portion, the first movable portion, and at least a portion of the first optical element are exposed from the first groove; When viewed along the main axis, the second movable portion is shielded by the base; The third movable portion has a second opening, a third opening and a second groove; The second opening is connected to the first opening and the second groove, and the third opening is connected to the second groove; The second groove is located in the first groove; The second groove and the first groove together accommodate a portion of the third optical element; The first movable portion and at least a portion of the first optical element are exposed from the second groove; The base further comprises a first bottom surface and a first side inclined surface; The first side inclined surface extends obliquely from the first bottom surface; The third movable portion has a second bottom surface and a second side inclined surface; The second side inclined surface extends obliquely from the second bottom surface; A gap is formed between the first bottom surface and the second bottom surface; The second side bevel is not aligned with the first side bevel; When viewed along the first axial direction, the second side slope is hidden by the base; When viewed along the major axis, a portion of the second bottom surface is exposed by the first groove; When viewed along the major axis, the first groove has a size greater than that of the second groove; When viewed along the major axis, a size of the first groove is larger than a size of the third opening.

5. The optical element driving mechanism according to claim 4, wherein: The driving assembly further includes a third coil and a third magnetic element, configured to drive the third movable portion, the second movable portion and the first movable portion to move along the main axis; When viewed along the first axial direction, the first coil overlaps at least a portion of the second optical element; The third coil is located on a third side of the rectangular structure; The second optical element is located on a fourth side of the rectangular structure; The first side and the fourth side are opposite sides of the rectangular structure; The second side and the third side are opposite sides of the rectangular structure.

6. The optical element driving mechanism according to claim 5, wherein: The optical element driving mechanism further includes a second circuit component disposed on the base and located from the first side to the third side; The first optical module further includes a first support member, a second support member, and a third support member, which are fixedly disposed on the second circuit assembly and correspond to the first coil, the second coil, and the third coil, respectively; The first support member and the second support member are components made of non-magnetic metal material; The third supporting member is made of a magnetically conductive metal material.

7. The optical element driving mechanism according to claim 6, wherein: The first optical module further has two first through holes passing through the first support member and the second circuit component; The two first through holes correspond to the first coil; The first optical module further has two second through holes passing through the second support member and the second circuit component; The two second through holes correspond to the second coil; The first optical module further has two third through holes passing through the third support member and the second circuit component; The two third through holes correspond to the third coil.

8. The optical element driving mechanism according to claim 5, wherein: The optical element driving mechanism further includes a first rolling element disposed between the first movable portion and the third movable portion; The optical element driving mechanism further includes a plurality of second rolling elements disposed between the first movable portion and the second movable portion; The optical element driving mechanism further includes a plurality of third rolling elements disposed between the second movable portion and the third movable portion; The second movable portion has a bottom plate and a protruding portion; The protrusion protrudes from the bottom plate toward the first movable part; When viewed along the first axial direction, the protrusion overlaps at least a portion of the first movable portion; The first movable portion has a first receiving groove and a plurality of first grooves; The first receiving groove is configured to receive the first rolling element; The plurality of first grooves are configured to accommodate the plurality of second rolling elements; The second movable portion has a plurality of second grooves configured to accommodate the plurality of second rolling elements; An extending direction of the plurality of second grooves is the same as an extending direction of the plurality of first grooves; The second movable portion further has a plurality of third grooves configured to accommodate the plurality of third rolling elements; When viewed along the main axis, the second movable portion has an L-shaped structure; The third movable portion has a second receiving groove and a plurality of fourth grooves; The second receiving groove is configured to receive the first rolling element; The plurality of fourth grooves are configured to accommodate the plurality of third rolling elements; An extending direction of the plurality of fourth grooves is the same as an extending direction of the plurality of third grooves; The first optical module further includes a first magnetic conductive element and a second magnetic conductive element, which are disposed on the third movable portion; The first magnetic conductive element and the second magnetic conductive element correspond to the first magnetic element and the second magnetic element respectively; When viewed along the major axis, the first magnetically conductive element overlaps the first magnetic element; When viewed along the major axis, the second magnetically conductive element overlaps the second magnetic element.

9. The optical element driving mechanism according to claim 3, wherein: The shell is made of non-magnetic material; The housing covers the first optical element and at least a portion of the second optical element; The housing has a first top wall, a second top wall and an oblique wall; The oblique wall is connected between the first top wall and the second top wall; The angle between the oblique wall and the second top wall is between 30 and 60 degrees; The second top wall forms the housing opening, and a portion of the second optical element is disposed in the housing opening; The optical element driving mechanism further includes a second optical module disposed on the second top wall and surrounding a portion of the second optical element; When viewed along the principal axis, the first optical element overlaps the first top wall; When viewed along the principal axis, the first top wall completely obscures the first optical element; On the main shaft, there is a first distance between the first top wall and the second bearing surface; On the main shaft, there is a second distance between the second top wall and the second bearing surface; The first distance is greater than the second distance.

10. The optical element driving mechanism according to claim 9, wherein: The optical element driving mechanism further includes a first electrical component, a second electrical component and a third electrical component, which are partially disposed on the supporting base; The first circuit assembly further has a fixed end portion fixed to the supporting base and electrically connected to the first electrical component; The second top wall of the housing is further formed with a side opening, which is arranged on one side of the housing opening; The second electrical component is exposed from the side opening; The second optical module is electrically connected to the second electrical component via the side opening; The optical element driving mechanism further includes a second circuit component disposed on the first optical module and electrically connected to the driving component; The second circuit component is electrically connected to the third electrical component; The optical element driving mechanism further includes a plurality of electrical pins partially disposed in the supporting base; The first electrical component, the second electrical component, and the third electrical component are electrically connected to an external circuit via the plurality of electrical pins; When viewed along the main axis, the supporting base has a rectangular structure; The plurality of electrical pins are located on a long side of the rectangular structure.

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