Optical element driving mechanism

Abstract

The utility model provides an optical element driving mechanism. The optical element driving mechanism comprises a fixed part, a first movable part and a driving assembly. The first movable part is used for being connected with an optical element with an optical axis, and the first movable part can move relative to the fixed part. The driving assembly is used for driving the first movable part to move. When observed along the optical axis, the optical element driving mechanism is polygonal and comprises a first side, a second side, a third side and a fourth side, the third side is opposite to the first side, and the fourth side is opposite to the second side. Under the condition that the third side is not provided with any magnetic element, coil and coil assembly, the optical element driving mechanism can still effectively achieve the automatic focusing function and the optical anti-shake function.

Description

Technical Field

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

[0002] With the development of technology, optical elements and the optical element driving mechanisms that drive them have become increasingly miniaturized. By incorporating optical elements, optical element driving mechanisms, and photosensitive elements, many electronic devices (such as tablets and smartphones) have acquired the ability to take photos and record videos.

[0003] When users operate electronic devices, shaking can occur, causing photos or videos to become blurry. However, as the demand for image quality increases, optical element drive mechanisms that can correct shaking have been developed.

[0004] The optical element includes an optical axis passing through its center. An optical element drive mechanism can drive the optical element to move along a direction parallel to the optical axis to focus on the subject, achieving autofocus (AF). Furthermore, the optical element drive mechanism can also drive the optical element to move along a direction perpendicular to the optical axis to compensate for image blur caused by user movement or external impacts, resulting in image or video blur. This achieves optical image stabilization (OIS). Through autofocus and optical image stabilization, the quality of the captured images can be improved. Utility Model Content

[0005] The purpose of this invention is to provide an optical element driving mechanism to solve at least one of the above-mentioned problems.

[0006] Some embodiments of this utility model provide an optical element driving mechanism. The optical element driving mechanism includes a fixed part, a first movable part, and a driving assembly. The first movable part is used to connect an optical element having an optical axis, and the first movable part is movable relative to the fixed part. The driving assembly is used to drive the first movable part to move. When viewed along the optical axis, the optical element driving mechanism is polygonal, including a first side, a second side, a third side, and a fourth side, where the third side is opposite to the first side, and the fourth side is opposite to the second side.

[0007] In some embodiments, the driving assembly includes a first-side first coil and a first-side second coil, both located on a first side, wherein a winding axis of the first-side first coil and a winding axis of the first-side second coil are parallel to each other and do not overlap. In some embodiments, the fixing part includes a base, the base including a first positioning element and a second positioning element, both located on a first side, wherein the first-side first coil surrounds the first positioning element, and the first-side second coil surrounds the second positioning element.

[0008] In some embodiments, the base further includes a base receiving portion formed on the first side and located between the first coil and the second coil on the first side. In some embodiments, the optical element driving mechanism further includes a sensing component, wherein the sensing component includes a first sensing element on the first side and a second sensing element on the first side, and the driving component further includes a circuit element, wherein the first sensing element on the first side, the second sensing element on the first side, and the circuit element are located on the first side, wherein, when viewed along the optical axis, the first sensing element on the first side and the second sensing element on the first side are located on different sides of the circuit element.

[0009] In some embodiments, when viewed along the optical axis, the first-side second sensing element is a rectangle, and the extension direction of a long side of the rectangle is not parallel to the first side. In some embodiments, the first-side second sensing element is disposed in the base receiving portion, wherein, along the optical axis, a depth of the base receiving portion is different from a dimension of the first-side second sensing element. In some embodiments, the optical element driving mechanism further includes a connecting element, wherein the connecting element is at least partially disposed in the base receiving portion and directly contacts a top surface of the first-side second sensing element, a bottom surface of the first-side second sensing element, a first-side first coil, and a first-side second coil.

[0010] In some embodiments, the optical element driving mechanism further includes an elastic component. The elastic component includes a first elastic element and four second elastic elements. The first elastic element is connected to a first movable portion. The four second elastic elements are connected to the first elastic element. The first elastic element includes a first-side first conductive element, a first-side second conductive element, a third-side first conductive element, and a third-side second conductive element, each connected to one of the four second elastic elements. The first-side first conductive element includes a first-side first flexible portion, and the first-side second conductive element includes a first-side second flexible portion, and the first-side first flexible portion and the first-side second flexible portion are substantially symmetrical. The third-side first conductive element includes a third-side first flexible portion, and the third-side second conductive element includes a third-side second flexible portion, and the third-side first flexible portion and the third-side second flexible portion are substantially symmetrical.

[0011] In some embodiments, an elastic coefficient of the first flexible portion on the first side is different from an elastic coefficient of the first flexible portion on the third side.

[0012] The beneficial effect of this utility model is that, through the signal transmission design of this utility model, the autofocus function of the optical element drive mechanism can be better achieved. Attached Figure Description

[0013] To make the features or advantages of this utility model more apparent and understandable, some embodiments are provided below in conjunction with the accompanying drawings for detailed description. It should be noted that the various features are not necessarily drawn to scale. In fact, the dimensions of various features may be arbitrarily enlarged or reduced, and they may be drawn schematically.

[0014] Figure 1 This is a schematic diagram of an optical element drive mechanism and an optical element according to some embodiments.

[0015] Figure 2 This is an exploded view of an optical element driving mechanism according to some embodiments.

[0016] Figure 3 This is a perspective view of the base according to some embodiments.

[0017] Figure 4 This is a perspective view of the first active part according to some embodiments.

[0018] Figure 5A This is a perspective view of the second active part according to some embodiments.

[0019] Figure 5B This is a bottom view of the second active part according to some embodiments.

[0020] Figure 6 This is a schematic diagram of a resilient component according to some embodiments.

[0021] Figure 7 This is a schematic diagram of a first active part, a driving component, and a sensing component according to some embodiments.

[0022] Figure 8 as well as Figure 9 These are perspective views of an optical element drive mechanism with some components omitted according to some embodiments, taken from different angles.

[0023] Figure 10 This is a top view of an optical element drive mechanism with some components omitted according to some embodiments.

[0024] Figure 11 This is a side view of an optical element drive mechanism with some components omitted according to some embodiments.

[0025] Figure 12as well as Figure 13 These are perspective views of an optical element drive mechanism with some components omitted according to some embodiments, taken from different angles.

[0026] Figure 14 This is a top view of an optical element drive mechanism with some components omitted according to some embodiments.

[0027] Figure 15 This is a side view of an optical element drive mechanism with some components omitted according to some embodiments.

[0028] Figure 16 This is a schematic diagram of an optical element drive mechanism with some components omitted according to some embodiments.

[0029] Figure 17 This is a top view of an optical element drive mechanism with some components omitted according to some embodiments.

[0030] The attached figures are labeled as follows:

[0031] 100: Optical element drive mechanism

[0032] 200: Fixing part

[0033] 210: Outer shell

[0034] 211: Shell opening

[0035] 212: Top Wall

[0036] 213: Sidewall

[0037] 220: Base

[0038] 221: Base opening

[0039] 222: Base surface

[0040] 223: Base Receiving Section

[0041] 224: Convex column

[0042] 225: First positioning element

[0043] 226: Second positioning element

[0044] 227: Third positioning element

[0045] 228: Fourth positioning element

[0046] 300: First Activities Department

[0047] 310: Opening of the First Activity Department

[0048] 320: Retaining structure

[0049] 330: Upper stop part

[0050] 340: Lower stop section

[0051] 350: Second lateral protrusion

[0052] 400: Second Activities Department

[0053] 410: Opening of the Second Activity Department

[0054] 420: First side groove

[0055] 430: Second side groove

[0056] 440: Fourth side groove

[0057] 500: Flexible Component

[0058] 510: First elastic element

[0059] 511: First conductive element on the first side

[0060] 512: Second conductive element on the first side

[0061] 513: Third side first conductive element

[0062] 514: Second conductive element on the third side

[0063] 520: Second elastic element

[0064] 530: Third elastic element

[0065] 531: Second-side conductive element

[0066] 532: Fourth-side conductive element

[0067] 600: Driver Components

[0068] 610: Circuit components

[0069] 620: First side magnetic element

[0070] 631: First coil on the first side

[0071] 632: Second coil on the first side

[0072] 640: Second side magnetic element

[0073] 650: Second side coil

[0074] 660: Second side coil group

[0075] 670: Fourth side magnetic element

[0076] 680: Fourth side coil

[0077] 690: Fourth side coil group

[0078] 700: Sensing Components

[0079] 710: First side first sensing element

[0080] 720: First side second sensing element

[0081] 721: Top surface of the second sensing element on the first side

[0082] 722: Bottom surface of the second sensing element on the first side

[0083] 730: Fourth-side sensing element

[0084] 800: Connecting element

[0085] 5111: First flexible part on the first side

[0086] 5121: Second flexible part on the first side

[0087] 5131: Third side, first flexible part

[0088] 5141: The second flexible part on the third side

[0089] O: Optical axis

[0090] OE: Optical Components Detailed Implementation

[0091] This specification provides many different embodiments or examples to implement different features of the present invention. If this specification describes a first feature being formed "on" or "above" a second feature, it means that it may include embodiments in which the first feature and the second feature are in direct contact, or embodiments in which an additional feature is formed between the first feature and the second feature, so that the first feature and the second feature are not in direct contact.

[0092] Furthermore, in this specification, relative spatial terms may be used to describe the arrangement of the various features. These relative spatial terms are used to facilitate the description of the positional relationship of one feature relative to other features in the accompanying drawings. In addition to the orientations shown in the drawings, these spatial terms are intended to encompass different orientations of the device in use or operation. The device may be rotated to different orientations (90 degrees or other orientations), and the relative spatial terms used herein can be interpreted in the same way. For example, if the drawings are flipped so that the device is upside down, the feature "above" will become the feature "below".

[0093] In this specification, terms such as "comprising" and "having" are open-ended terms and should therefore be interpreted as "containing but not limited to...". Thus, the terms "comprising" and "having" specify the presence of corresponding features, areas, steps, operations, and / or elements, but do not exclude the presence of one or more corresponding features, areas, steps, operations, and / or elements.

[0094] The ordinal numbers in the specification and claims, such as "first," "second," etc., do not have a sequential relationship; they are only used to distinguish two different features with the same name. Therefore, the first feature referred to in the specification may be called the second feature in the claims. Furthermore, similar and / or corresponding symbols or letters may be used in different embodiments of this utility model. The use of these similar and / or corresponding symbols or letters is only for the purpose of simply and clearly describing some embodiments of this utility model and does not represent any association between the different embodiments and / or configurations discussed.

[0095] Please refer to this first. Figure 1 as well as Figure 2 . Figure 1 This is a schematic diagram of an optical element drive mechanism 100 and an optical element OE according to some embodiments. Figure 2 This is an exploded view of an optical element drive mechanism 100 according to some embodiments. The optical element OE has an optical axis O. The optical axis O is a virtual axis passing through the center of the optical element OE. The optical element OE may be a lens, for example, a lens lens. The optical element OE may be made of plastic or glass. The optical element OE may be circular or other shapes. The optical element OE and the optical element drive mechanism 100 may be mounted in an electronic device for a user to capture images.

[0096] For ease of explanation, the four sides of the optical element driving mechanism 100 are defined as a first side 1001, a second side 1002, a third side 1003, and a fourth side 1004. The first side 1001 is opposite to the third side 1003, while the second side 1002 is opposite to the fourth side 1004. The first side 1001 and the third side 1003 are approximately parallel, while the second side 1002 and the fourth side 1004 are approximately parallel. The first side 1001, the second side 1002, the third side 1003, and the fourth side 1004 are approximately perpendicular to the optical axis O. When viewed along the optical axis O, the first side 1001 and the third side 1003 are parallel to and extend along the X-axis. When viewed along the optical axis O, the second side 1002 and the fourth side 1004 are parallel to and extend along the Y-axis. The coordinate axes in the accompanying drawings are for reference only and are not intended to be limiting.

[0097] The optical element driving mechanism 100 includes a fixed part 200, a first movable part 300, a second movable part 400, an elastic component 500, a driving component 600, and a sensing component 700. The description in this specification is for illustrative purposes only, and components may be added or removed according to actual needs. Furthermore, for clarity, some components may be omitted from the accompanying drawings.

[0098] The first movable part 300 is connected to an optical element and is movable relative to the fixed part 200. The second movable part 400 is movable relative to both the fixed part 200 and the first movable part 300. The elastic component 500 provides elasticity and can transmit signals. The driving component 600 drives the first movable part 300 and the second movable part 400 to move relative to the fixed part 200. The sensing component 700 can sense the movement of the first movable part 300 and the second movable part 400 relative to the fixed part 200.

[0099] When viewed along the optical axis O, the fixing part 200 has a polygonal structure, such as a rectangle or a square. The fixing part 200 includes a housing 210 and a base 220. The housing 210 can be connected to the base 220 by welding or other means. The space between the housing 210 and the base 220 can accommodate the first movable part 300, the second movable part 400, the elastic component 500, the driving component 600, the sensing component 700, etc.

[0100] The housing 210 has a housing opening 211, a top wall 212, and four side walls 213. The housing opening 211 allows light to pass through. The top wall 212 is approximately perpendicular to the optical axis O. Compared to the side walls 213, the top wall 212 is closer to the point of light incidence. The side walls 213 extend from the edge of the top wall 212 along the optical axis O.

[0101] Apart from Figure 1 as well as Figure 2 In addition, please refer to the following: Figure 3 To understand the base 220. Figure 3 This is a perspective view of a base 220 according to some embodiments. The base 220 includes a base opening 221, a base surface 222, a base receiving portion 223, four protrusions 224, a first positioning element 225, a second positioning element 226, a third positioning element 227, and a fourth positioning element 228.

[0102] The base opening 221 allows light to pass through. The base surface 222 is defined as the plane of the base 220 with the largest area on the vertical optical axis O. A base receiving portion 223 is formed on the first side 1001. The base receiving portion 223 is recessed relative to the base surface 222. In some embodiments, the base receiving portion 223 is a groove. In some embodiments, the base receiving portion 223 is formed at the center of the side on which it is located. That is, the distance between the center of the base receiving portion 223 and the second side 1002 is approximately the same as the distance between the center of the base receiving portion 223 and the fourth side 1004.

[0103] Four protrusions 224 are respectively disposed at the four corners of the base 220. The four protrusions 224 protrude relative to the base surface 222. In some embodiments, the outer surfaces of the four protrusions 224 (the surfaces away from the optical axis O) may contact the sidewalls 213 of the housing 210 to increase the contact area between the housing 210 and the base 220, and further reduce the possibility of the housing 210 falling off.

[0104] A first positioning element 225 and a second positioning element 226 are located on a first side 1001. The first positioning element 225 and the second positioning element 226 protrude relative to the base surface 222. In some embodiments, the first positioning element 225 and the second positioning element 226 are substantially symmetrical. A third positioning element 227 and a fourth positioning element 228 are located on a fourth side 1004. The third positioning element 227 and the fourth positioning element 228 protrude relative to the base surface 222. In some embodiments, the third positioning element 227 and the fourth positioning element 228 are substantially symmetrical.

[0105] In some embodiments, the dimensions of the first positioning element 225 are different from those of the third positioning element 227. In some embodiments, the dimensions of the first positioning element 225 are larger than those of the third positioning element 227.

[0106] In some embodiments, the base 220 further includes an embedded component (not shown). The embedded component can be connected to a power source (not shown) external to the optical element drive mechanism 100. The embedded component may include different pins, which are allowed to receive or release current. In some embodiments, the embedded component is formed in the base 220 by insert molding. In some embodiments, the embedded component may be made of a metallic material, such as iron (Fe), nickel (Ni), cobalt (Co), or alloys of the aforementioned metals. The embedded component may include four autofocus signal transmission units.

[0107] Next, please refer to Figure 2 as well as Figure 4 To understand the first activity section 300. Figure 4This is a perspective view of a first movable part 300 according to some embodiments. The first movable part 300 includes a first movable part opening 310, a receiving structure 320, four upper stops 330, four lower stops 340 (only two of them are shown due to the viewing angle), a second side protrusion 350, and a fourth side protrusion (not shown due to the viewing angle).

[0108] The first movable opening 310 allows light to pass through. A receiving structure 320 is formed on the first side 1001. In some embodiments, the receiving structure 320 is a groove.

[0109] The upper stop 330 is closer to the top wall 212 of the housing 210 than the rest of the first movable portion 300. The upper stop 330 may limit the range of motion of the first movable portion 300. For example, when the first movable portion 300 moves to its limit toward the top wall 212 of the housing 210, the upper stop 330 may contact the top wall 212 of the housing 210. The lower stop 340 is closer to the base 220 than the rest of the first movable portion 300. The lower stop 340 may limit the range of motion of the first movable portion 300. For example, when the first movable portion 300 moves to its limit toward the base, the lower stop 340 may contact the base 220. In some embodiments, when viewed along the optical axis O, the upper stop 330 and the lower stop 340 substantially overlap.

[0110] The second side protrusion 350 is located on the second side 1002. The fourth side protrusion is located on the fourth side 1004. In some embodiments, the second side protrusion 350 and the fourth side protrusion are substantially symmetrical.

[0111] Next, please refer to Figure 2 , Figure 5A , Figure 5B To understand the Second Activity Department 400. Figure 5A This is a perspective view of the second active part 400 according to some embodiments. Figure 5B This is a bottom view of a second movable part 400 according to some embodiments. The outline of the second movable part 400 is polygonal, for example, rectangular or square. The second movable part 400 includes a second movable part opening 410, a first side groove 420, a second side groove 430, and a fourth side groove 440.

[0112] The second movable portion opening 410 is used to receive the first movable portion 300. A first side groove 420 is formed on the first side 1001. A second side groove 430 is formed on the second side 1002. A fourth side groove 440 is formed on the fourth side 1004. In some embodiments, the size of the first side groove 420 is larger than the size of the second side groove 430 and the fourth side groove 440. In some embodiments, the shape and size of the second side groove 430 are substantially the same as the shape and size of the fourth side groove 440.

[0113] In some embodiments, the second active part 400 may also include an embedded component (not shown) therein.

[0114] Next, please refer to Figure 2 as well as Figure 6 To understand the elastic component 500. Figure 6 This is a schematic diagram of an elastic component 500 according to some embodiments. The elastic component 500 includes a first elastic element 510, four second elastic elements 520, and a third elastic element 530.

[0115] The first elastic element 510, the second elastic element 520, and the third elastic element 530 are made of elastic material or a ductile material, such as metal. In the art, the first elastic element 510 and the third elastic element 530 may be referred to as "spring," "leaf spring," etc., and the second elastic element 520 may be referred to as "suspension line," "ring line," etc.

[0116] A first elastic element 510 is disposed between the top wall 212 of the housing 210 and the first movable part 300. The first elastic element 510 is also disposed between the top wall 212 of the housing 210 and the second movable part 400. Specifically, the first elastic element 510 connects the top surface of the first movable part 300 and the top surface of the second movable part 400. In embodiments where the second movable part 400 includes an embedded component, the first elastic element 510 can be electrically connected to the second movable part 400.

[0117] The first elastic element 510 may include a first-side first conductive element 511, a first-side second conductive element 512, a third-side first conductive element 513, and a third-side second conductive element 514. The first-side first conductive element 511, the first-side second conductive element 512, the third-side first conductive element 513, and the third-side second conductive element 514 are electrically independent of each other.

[0118] A first conductive element 511 and a second conductive element 512 on a first side are located on a first side 1001. A first conductive element 513 and a second conductive element 514 on a third side are located on a third side 1003. In some embodiments, the first conductive element 511 and the second conductive element 512 on the first side are substantially symmetrical. In some embodiments, the first conductive element 513 and the second conductive element 514 on the third side are substantially symmetrical.

[0119] The first conductive element 511 on the first side may include a first flexible portion 5111 on the first side, which is a relatively thin and flexible portion of the first conductive element 511 on the first side. The second conductive element 512 on the first side may include a second flexible portion 5121 on the first side, which is a relatively thin and flexible portion of the second conductive element 512 on the first side. The first conductive element 513 on the third side may include a first flexible portion 5131 on the third side, which is a relatively thin and flexible portion of the first conductive element 513 on the third side. The second conductive element 514 on the third side may include a second flexible portion 5141 on the third side, which is a relatively thin and flexible portion of the second conductive element 514 on the third side.

[0120] In some embodiments, the elastic coefficient of the first flexible portion 5111 on the first side is substantially the same as that of the second flexible portion 5121 on the first side. In some embodiments, the elastic coefficient of the first flexible portion 5131 on the third side is substantially the same as that of the second flexible portion 5141 on the third side. In some embodiments, the elastic coefficient of the first flexible portion 5111 on the first side is different from that of the first flexible portion 5131 on the third side. Therefore, the strength of the elastic force provided by the first flexible portion 5111 on the first side is different from that provided by the first flexible portion 5131 on the third side. The elastic force generated by the elastic component 500 can be adjusted as needed to improve the stability of the optical element drive mechanism 100.

[0121] In some embodiments, the first flexible portion 5111 on the first side is substantially symmetrical to the second flexible portion 5121 on the first side. In some embodiments, the first flexible portion 5131 on the third side is substantially symmetrical to the second flexible portion 5141 on the third side.

[0122] The upper end of the second elastic element 520 is connected to the first elastic element 510, and the lower end is connected to the four corners of the base 220 of the fixing part 200. As mentioned above, the first elastic element 510 is connected to the first movable part 300 and the second movable part 400. Therefore, the second elastic element 520 substantially "suspends" the first movable part 300 and the second movable part 400 between the outer shell 210 and the base 220 of the fixing part 200. That is, the first movable part 300 and the second movable part 400 do not directly contact the outer shell 210 and the base 220.

[0123] A third elastic element 530 is disposed between the first movable part 300 and the base 220. The third elastic element 530 is also disposed between the second movable part 400 and the base 220. Specifically, the third elastic element 530 connects the bottom surface of the first movable part 300 and the bottom surface of the second movable part 400. In embodiments where the second movable part 400 includes an embedded component, the third elastic element 530 can be electrically connected to the second movable part 400.

[0124] The third elastic element 530 may include a second-side conductive element 531 and a fourth-side conductive element 532. The second-side conductive element 531 is located on the second side 1002, and the fourth-side conductive element 532 is located on the fourth side 1004. In some embodiments, the second-side conductive element 531 and the fourth-side conductive element 532 are substantially symmetrical.

[0125] Next, please refer to Figure 2 , Figure 7 The driving component 600 and the sensing component 700 will be described. Figure 7 This is a schematic diagram of a first active part 300, a driving component 600, and a sensing component 700 according to some embodiments.

[0126] The drive assembly 600 includes a circuit element 610, a first-side magnetic element 620, a first-side first coil 631, a first-side second coil 632, a second-side magnetic element 640, a second-side coil 650, a second-side coil group 660, a fourth-side magnetic element 670, a fourth-side coil 680, and a fourth-side coil group 690.

[0127] Circuit element 610 can be a circuit board, such as a flexible printed circuit (FPC) or a rigid-flex PCB. Electronic components such as capacitors, resistors, and inductors can be disposed on circuit element 610.

[0128] The first magnetic element 620, the second magnetic element 640, and the fourth magnetic element 670 can be magnets, multipole magnets, or a combination of multiple magnets bonded together.

[0129] The first coil 631, the second coil 632, the second coil 650, and the fourth coil 680 on the first side are commonly referred to in the art as wound coils, having a winding spool passing through the center. Wound coils are typically elliptical, rectangular, or the like. The second coil group 660 and the fourth coil group 690 on the second side are commonly referred to in the art as FP coils (FP-coil), which include a circuit board and the wiring within it. The second coil group 660 and the fourth coil group 690 may be plate-shaped and have a corresponding structure to the base 220. Wound coils are easier to manufacture than FP coils. FP coils can have a thinner thickness and are more flexible in use than wound coils.

[0130] A first-side magnetic element 620, a first-side first coil 631, and a first-side second coil 632 are located on the first side 1001. The first-side magnetic element 620 corresponds to the first-side first coil 631 and the first-side second coil 632. The first-side magnetic element 620 can be disposed within the first-side groove 420 of the second movable part 400. The winding shafts of the first-side first coil 631 and the first-side second coil 632 are parallel to each other and do not overlap. The first-side first coil 631 and the first-side second coil 632 can be disposed on the base 220. For example, the first-side first coil 631 can surround the first positioning element 225 of the base 220, and the first-side second coil 632 can surround the second positioning element 226 of the base 220. That is, the first positioning element 225 contacts an inner edge of the first-side first coil 631, and the second positioning element 226 contacts an inner edge of the first-side second coil 632. The electromagnetic force generated between the first magnetic element 620 and the first coil 631 and between the first magnetic element 620 and the second coil 632 can drive the second movable part 400 to move along the Y-axis.

[0131] The second-side magnetic element 640, the second-side coil 650, and the second-side coil group 660 are located on the second side 1002. The second-side magnetic element 640 can simultaneously correspond to the second-side coil 650 and the second-side coil group 660. In some embodiments, the second-side magnetic element 640 is disposed between the second-side coil 650 and the second-side coil group 660. The second-side magnetic element 640 can be disposed within the second-side groove 430 of the second movable portion 400. The second-side coil 650 can surround the second-side protrusion 350 of the first movable portion 300. The second-side coil group 660 can be disposed on the base 220. The electromagnetic force generated between the second-side magnetic element 640 and the second-side coil 650 can drive the first movable portion 300 to move along the Z-axis. The electromagnetic force generated between the second-side magnetic element 640 and the second-side coil group 660 can drive the second movable portion 400 to move along the X-axis.

[0132] A fourth-side magnetic element 670, a fourth-side coil 680, and a fourth-side coil group 690 are located on the fourth side 1004. The fourth-side magnetic element 670 may simultaneously correspond to both the fourth-side coil 680 and the fourth-side coil group 690. In some embodiments, the fourth-side magnetic element 670 is disposed between the fourth-side coil 680 and the fourth-side coil group 690. The fourth-side magnetic element 670 may be disposed within the fourth-side groove 440 of the second movable portion 400. The fourth-side coil 680 may protrude around the fourth-side protrusion of the first movable portion 300. (That is, the second-side coil 650 and the fourth-side coil 680 are disposed on opposite sides of the first movable portion 300.) The fourth-side coil group 690 may be disposed on the base 220. The electromagnetic force generated between the fourth-side magnetic element 670 and the fourth-side coil 680 can drive the first movable portion 300 to move along the Z-axis. The electromagnetic force generated between the fourth-side magnetic element 670 and the fourth-side coil group 690 can drive the second movable portion 400 to move along the X-axis.

[0133] As described above, the movement of the first movable part 300 relative to the fixed part 200 mainly achieves autofocus, while the movement of the second movable part 400 relative to the fixed part 200 mainly achieves optical image stabilization.

[0134] In addition, since the second-side magnetic element 640 corresponds to both the second-side coil 650 and the second-side coil group 660, and the fourth-side magnetic element 670 corresponds to both the fourth-side coil 680 and the fourth-side coil group 690, the volume of the optical element driving mechanism 100 can be reduced to achieve miniaturization.

[0135] It is worth noting that, because the third side 1003 does not have any magnetic elements, coils, or coil groups, another optical element driving mechanism can be installed adjacent to the third side 1003 of the optical element driving mechanism 100 to reduce the possibility of electromagnetic interference between the optical element driving mechanism 100 and the aforementioned other optical element driving mechanism. Furthermore, because the third side 1003 does not have any magnetic elements, coils, or coil groups, and the movement of the second movable part 400 on the Y-axis is achieved solely by the first-side magnetic element 620 and the first-side first coil 631, and the first-side magnetic element 620 and the first-side second coil 632, the first-side magnetic element 620 may have a large volume and / or size. In some embodiments, the volume of the first-side magnetic element 620 is larger than the volume of the second-side magnetic element 640 and the fourth-side magnetic element 670.

[0136] The sensing component 700 includes a first sensing element 710 on a first side, a second sensing element 720 on a first side, and a fourth sensing element 730 on a fourth side.

[0137] The first sensing element 710 is located on the first side 1001. The first sensing element 710 may be disposed on the side of the circuit element 610 facing the first movable part 300. That is, the circuit element 610 may be disposed between the first magnetic element 620 and the first sensing element 710. In some embodiments, the first sensing element 710 is disposed in the receiving structure 320 of the first movable part 300.

[0138] The first-side second sensing element 720 is also located on the first side 1001. In some embodiments, when viewed along the optical axis O, the first-side second sensing element 720 and the first-side first sensing element 710 are located on different sides of the circuit element 610. The first-side second sensing element 720 may be disposed on the base 220. In some embodiments, the first-side second sensing element 720 is disposed in the base receiving portion 223 of the base 220 and is located between the first positioning element 225 and the second positioning element 226 of the base 220.

[0139] When viewed along the optical axis O, the first-side second sensing element 720 is rectangular. In some embodiments, when viewed along the optical axis O, the extension direction of a long side of the first-side second sensing element 720 is not parallel to the first side 1001. In some embodiments, when viewed along the optical axis O, the extension direction of the long side of the first-side second sensing element 720 is perpendicular to the first side 1001.

[0140] The fourth-side sensing element 730 is located on the fourth side 1004. The fourth-side sensing element 730 may be disposed on the base 220. In some embodiments, the fourth-side sensing element 730 is disposed between the third positioning element 227 and the fourth positioning element 228 of the base 220.

[0141] The first sensing element 710 on the first side corresponds to the first magnetic element 620 on the first side. The first sensing element 710 on the first side can be used to sense the movement of the first movable part 300 along the Z-axis. That is, the first sensing element 710 on the first side is a sensing element for sensing the autofocus function of the optical element drive mechanism 100.

[0142] The first-side second sensing element 720 corresponds to the first-side magnetic element 620. The fourth-side sensing element 730 corresponds to the fourth-side magnetic element 670. The first-side second sensing element 720 and the fourth-side sensing element 730 can be used to sense the movement of the second movable part 400 along the Y-axis and X-axis. That is, the first-side second sensing element 720 and the fourth-side sensing element 730 are sensing elements for sensing the optical anti-shake function of the optical element drive mechanism 100.

[0143] Next, please refer to Figures 8 to 15 . Figure 8 as well as Figure 9These are perspective views of an optical element drive mechanism 100 with some components omitted according to some embodiments, taken from different angles. Figure 10 This is a top view of an optical element drive mechanism 100 with some components omitted according to some embodiments. Figure 11 This is a side view of an optical element drive mechanism 100 with some components omitted according to some embodiments. Figure 12 as well as Figure 13 These are perspective views of an optical element drive mechanism 100 with some components omitted according to some embodiments, taken from different angles. Figure 14 This is a top view of an optical element drive mechanism 100 with some components omitted according to some embodiments. Figure 15 This is a side view of an optical element drive mechanism 100 with some components omitted according to some embodiments.

[0144] Figures 8 to 15 The purpose of providing this information is to facilitate understanding of the details within the optical element drive mechanism 100, such as the positional relationships and dimensional differences between the elements. For example, from... Figures 8 to 15 It can be understood how the first coil 631 on the first side surrounds the first positioning element 225, how the second coil 632 on the first side surrounds the second positioning element 226, and how the magnetic element 620 on the first side is positioned above the first coil 631 and the second coil 632 on the first side.

[0145] Additionally, the first-side second sensing element 720 is disposed between the first-side first coil 631 and the first-side second coil 632. In some embodiments, the depth of the base receiving portion 223 of the base 220 on the optical axis O is different from the size of the first-side second sensing element 720. In some embodiments, the depth of the base receiving portion 223 of the base 220 on the optical axis O is less than the size of the first-side second sensing element 720, causing the first-side second sensing element 720 to protrude relative to the base surface 222.

[0146] In some embodiments, the optical element driving mechanism 100 further includes a connecting element 800, such as an adhesive (illustratively shown in...). Figure 15 (Illustrated). The connecting element 800 is at least partially disposed in the base receiving portion 223 and directly contacts the first-side first coil 631, the first-side second coil 632, and the first-side second sensing element 720 to enhance the connection between the first-side second sensing element 720 and the base 220. In some embodiments, the connecting element 800 directly contacts a top surface 721 and a bottom surface 722 of the first-side second sensing element 720 that are parallel to and opposite to each other on the base surface 222.

[0147] Finally, please refer to Figure 16 as well as Figure 17 In order to understand the signal transmission of the autofocus function. Figure 16This is a schematic diagram of an optical element drive mechanism 100 with some components omitted according to some embodiments. Figure 17 This is a top view of an optical element drive mechanism with some components omitted according to some embodiments.

[0148] A soldering element, such as a solder ball, can be applied between the first elastic element 510 and the circuit element 610, and between the third elastic element 530 and the circuit element 610, such that both the first elastic element 510 and the third elastic element 530 are electrically connected to the circuit element 610. The first elastic element 510 and the circuit element 610 may have more than one solder joint. The third elastic element 530 and the circuit element 610 may also have more than one solder joint.

[0149] In some embodiments, there are two solder joints between the first conductive element 511 on the first side of the first elastic element 510 and the top side of the circuit element 610, and there are also two solder joints between the fourth conductive element 532 on the fourth side of the third elastic element 530 and the bottom side of the circuit element 610. In some embodiments, there are two solder joints between the first conductive element 512 on the first side of the first elastic element 510 and the top side of the circuit element 610, and there are also two solder joints between the second conductive element 531 on the second side of the third elastic element 530 and the bottom side of the circuit element 610.

[0150] When the first movable part 300 is to be driven to move along the Z-axis, the signal regarding the autofocus function can be transmitted sequentially from the embedded component in the base 220 to the four second elastic elements 520, the first elastic element 510, the circuit element 610 (and the first sensing element 710 on the first side thereon).

[0151] Alternatively or additionally, when it is desired to drive the first movable part 300 to move along the Z-axis, the signal regarding the autofocus function can be sequentially transmitted from the embedded component in the base 220 to the four second elastic elements 520, the first elastic element 510, the embedded component in the second movable part 400, the third elastic element 530, the circuit element 610 (and the first sensing element 710 on the first side thereon).

[0152] The signal transmission design of this utility model enables the automatic focusing function of the optical element drive mechanism 100 to be achieved better.

[0153] Based on this invention, even without any magnetic elements, coils, or coil groups on one side of the optical element driving mechanism, the optical element driving mechanism can still effectively achieve autofocus and optical image stabilization. This design facilitates the installation of another optical element driving mechanism and reduces the possibility of electromagnetic interference between the two optical element driving mechanisms, while also increasing design flexibility. Furthermore, the optical element driving mechanism of this invention can be used with sensing components.

[0154] The foregoing overview of several embodiments provides a better understanding of various aspects of this invention for those skilled in the art. It should be understood by those skilled in the art that this invention can be readily used as the basis for designing or modifying other processes and structures to achieve the same purpose or have the same effects as the embodiments described herein. It should be understood by those skilled in the art that such equivalent configurations do not depart from the spirit and scope of this invention, and that various changes, substitutions, and modifications can be made to this invention without departing from its spirit and scope.

Claims

1. An optical element driving mechanism, characterized in that, include: One fixed part; A first movable part is used to connect an optical element having an optical axis, and the first movable part is movable relative to the fixed part; A sensing assembly, including a first sensing element on a first side and a second sensing element on a first side; and A drive assembly for driving the first movable part to move includes a circuit element; When viewed along the optical axis, the optical element driving mechanism is polygonal, including a first side, a second side, a third side, and a fourth side, with the third side opposite to the first side and the fourth side opposite to the second side. The first sensing element, the second sensing element, and the circuit element are located on the first side, and when viewed along the optical axis, the first sensing element and the second sensing element are located on different sides of the circuit element.

2. The optical element driving mechanism as described in claim 1, characterized in that, The drive assembly also includes a first coil on a first side and a second coil on a first side, the first coil on the first side and the second coil on the first side being located on the first side, wherein a winding axis of the first coil on the first side and a winding axis of the second coil on the first side are parallel to each other and do not overlap.

3. The optical element driving mechanism as described in claim 2, characterized in that, The fixing part includes a base, which includes a first positioning element and a second positioning element. The first positioning element and the second positioning element are located on the first side, wherein a first coil on the first side surrounds the first positioning element, and a second coil on the first side surrounds the second positioning element.

4. The optical element driving mechanism as described in claim 3, characterized in that, The base also includes a base receiving portion formed on the first side and located between the first coil and the second coil on the first side.

5. The optical element driving mechanism as described in claim 4, characterized in that, When viewed along the optical axis, the second sensing element on the first side is a rectangle, and the direction of one of the long sides of the rectangle is not parallel to the first side.

6. The optical element driving mechanism as described in claim 4, characterized in that, The second sensing element on the first side is disposed in the base receiving portion, wherein, on the optical axis, a depth of the base receiving portion is different from a dimension of the second sensing element on the first side.

7. The optical element driving mechanism as described in claim 6, characterized in that, It also includes a connecting element, wherein the connecting element is at least partially disposed in the base receiving portion and directly contacts a top surface of the first-side second sensing element, a bottom surface of the first-side second sensing element, the first-side first coil, and the first-side second coil.

8. The optical element driving mechanism as described in claim 1, characterized in that, It also includes a resilient component, wherein the resilient component comprises: A first elastic element, connecting the first movable part; and Four second elastic elements are connected to the first elastic element; The first elastic element includes a first conductive element on a first side, a second conductive element on a first side, a first conductive element on a third side, and a second conductive element on a third side, which are respectively connected to the four second elastic elements. The first conductive element on the first side includes a first flexible portion on the first side, and the second conductive element on the first side includes a second flexible portion on the first side, and the first flexible portion on the first side and the second flexible portion on the first side are symmetrical. The third-side first conductive element includes a third-side first flexible portion, and the third-side second conductive element includes a third-side second flexible portion, and the third-side first flexible portion and the third-side second flexible portion are symmetrical.

9. The optical element driving mechanism as described in claim 8, characterized in that, The elastic coefficient of the first flexible portion on the first side is different from the elastic coefficient of the first flexible portion on the third side.

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