Optical element driving mechanism

Abstract

An optical element driving mechanism comprises a movable part, a fixed part and a driving assembly. The movable part is used for connecting an optical element with an optical axis. The movable part can move relative to the fixed part. The driving assembly is used for driving the movable part to move relative to the fixed part.

Description

Technical Field

[0001] The utility model relates to a driving mechanism for an optical element, and particularly to a driving mechanism for an optical element with an integrated base. Background Art

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

[0003] The aforementioned electronic devices with functions of taking photos or videos usually are provided with a driving mechanism for an optical element. Light can pass through the optical element (such as a shutter blade, a filter, a lens, etc.) to form an image on a photosensitive element. The current trend of mobile devices is to reduce costs while improving durability. Therefore, how to effectively simplify complex assembly workstations and improve their durability has become an important issue. Summary of the Utility Model

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

[0005] The present disclosure provides a driving mechanism for an optical element, including a movable part, a fixed part and a driving component. The movable part is used to connect an optical element having an optical axis. The movable part can move relative to the fixed part. The driving component is used to drive the movable part to move relative to the fixed part.

[0006] According to some embodiments of the present disclosure, the fixed part includes a base. The base includes a body. The body includes an annular part and a pair of convex columns. The structure of the annular part is perpendicular to the optical axis. This pair of convex columns extends from the annular part along a direction parallel to the optical axis on one side of the annular part.

[0007] According to some embodiments of the present disclosure, the base further includes a retaining wall and a connecting element. The retaining wall is parallel to the optical axis. The retaining wall is located between this pair of convex columns. The connecting element is partially embedded in the annular part, the retaining wall and this pair of convex columns.

[0008] According to some embodiments of the present disclosure, the retaining wall of the base includes a contact part, a pair of front surfaces and a protruding part. The contact part is the surface of the retaining wall facing the optical axis. This pair of front surfaces are the surfaces of the retaining wall facing away from the optical axis. The protruding part protrudes from between this pair of front surfaces in a direction away from the optical axis.

[0009] According to some embodiments of the present disclosure, the driving component includes a coil and two magnetic conductive elements. The coil is disposed on the contact part of the retaining wall. The magnetic conductive elements are respectively disposed on this pair of front surfaces of the retaining wall. And the magnetic conductive elements respectively contact both sides of the protruding part to position the magnetic conductive elements.

[0010] According to some embodiments of the present disclosure, the fixing portion further includes a frame. The frame includes a concave surface, a lower surface, and a receiving space. The concave surface and the lower surface are planes of the frame perpendicular to the optical axis. The heights of the concave surface and the lower surface on the optical axis are different. A receiving space for accommodating the retaining wall and the pair of protruding posts is formed between the concave surface and the lower surface. The upper surface of the retaining wall is joined to the concave surface of the frame to fix the retaining wall.

[0011] According to some embodiments of the present disclosure, the optical element driving mechanism further includes an elastic element. The fixing portion includes a base. The elastic element includes a fixed end, a connecting end, and an elastic portion. The base includes a bottom surface and a welding portion. The welding portion of the base is a structure recessed from the bottom surface along a direction parallel to the optical axis. The welding portion corresponds to the fixed end of the elastic element. The fixed end of the elastic element is disposed on the bottom surface of the base. The welding portion of the base and the fixed end of the elastic element are fixedly connected together by welding. The connecting end of the elastic element is used to be fixedly connected to the optical module. The elastic portion of the elastic element is made of an elastic material. The two ends of the elastic portion are respectively connected to the fixed end and the connecting end.

[0012] According to some embodiments of the present disclosure, the base further includes a connecting portion that protrudes from the bottom surface of the base along the direction of the optical axis. The connecting portion of the base is connected to the optical module located below the optical element driving mechanism.

[0013] According to some embodiments of the present disclosure, the optical element driving mechanism further includes a plurality of support elements. The fixing portion includes a groove. Two of the support elements are arranged in the groove of the fixing portion along a direction parallel to the optical axis, and the support elements contact the movable portion to provide support for the movement of the movable portion relative to the fixing portion.

[0014] According to some embodiments of the present disclosure, the fixing portion includes a frame and a base. The frame includes a body and a structure strengthening element. The structure strengthening element of the frame is partially embedded in the body of the frame. The base includes a body and a structure strengthening element. The structure strengthening element of the base is partially embedded in the body of the base. The structure strengthening element of the frame and the structure strengthening element of the base are joined by welding to fixedly connect the frame and the base together.

[0015] The beneficial effect of the present disclosure is that the special relative positions and size relationships of the various elements disclosed in the present disclosure can not only make the optical element driving mechanism achieve overall lightweight, but also achieve the effect of strengthening the overall structure through the welding joint between the structure strengthening elements partially embedded in the frame and the base. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 is a perspective view of an optical element driving mechanism according to some embodiments of the present disclosure.

[0018] Figure 2 is an exploded view of an optical element driving mechanism according to some embodiments of the present disclosure.

[0019] Figure 3A is a perspective view of an optical element driving mechanism according to some embodiments of the present disclosure, in which the upper cover of the fixing part is not shown for illustrative purposes.

[0020] Figure 3B is a perspective view of the frame of the fixing part according to some embodiments of the present disclosure.

[0021] Figure 3C is a partial schematic view of the frame according to some embodiments of the present disclosure.

[0022] Figure 4 is a perspective view of the base according to some embodiments of the present disclosure.

[0023] Figure 5A and Figure 5B is a schematic view showing the manufacturing process of the base according to some embodiments of the present disclosure.

[0024] Figure 6 is a partial enlarged view of the optical element driving mechanism according to some embodiments of the present disclosure.

[0025] Figure 7 is a top view showing the base and the coil according to some embodiments of the present disclosure.

[0026] Figure 8 is a side view of the optical element driving mechanism according to some embodiments of the present disclosure.

[0027] Figure 9 is a bottom view showing the base and the elastic element according to some embodiments of the present disclosure.

[0028] The reference numerals are as follows:

[0029] 1000: Optical element driving mechanism

[0030] 1100: Fixing part

[0031] 1110: Upper cover

[0032] 1111: Opening

[0033] 1120: Frame

[0034] 1121: Body

[0035] 1121-1: Fixing Element

[0036] 1121-2: Fixed End

[0037] 1121-3: Concave Surface

[0038] 1121-4: Lower Surface

[0039] 1122: Accommodating Space

[0040] 1123: Structure Reinforcement Element

[0041] 1124: Groove

[0042] 1130: Base

[0043] 1131: Body

[0044] 1131-1: Ring-shaped Portion

[0045] 1131-2,1131-3: Stud

[0046] 1131-4: Connection Structure

[0047] 1131-5: Plate Structure

[0048] 1131-6: Protrusion

[0049] 1131-7: Bottom Surface

[0050] 1131-8: Connection Portion

[0051] 1131-9: Welding Portion

[0052] 1132: Retaining Wall

[0053] 1132-1: Contact Portion

[0054] 1132-2,1132-3: Side Surface

[0055] 1132-4: Front Surface

[0056] 1132-5: Protrusion

[0057] 1132-6: Protruding Surface

[0058] 1132-7: Side Surface

[0059] 1133: Connection Element

[0060] 1134, 1135, 1136: Structural strengthening elements

[0061] 1200: Movable part

[0062] 1210: Fixed end

[0063] 1300: Light-shielding element

[0064] 1400: Driving assembly

[0065] 1410: Coil

[0066] 1411: First edge

[0067] 1412: Second edge

[0068] 1420: Magnetic element

[0069] 1430: Magnetic conduction element

[0070] 1431: First edge

[0071] 1432: Second edge

[0072] 1500: Support element

[0073] 1600: Integrated circuit

[0074] 1700: Elastic element

[0075] 1710: Fixed end

[0076] 1720: Connection end

[0077] 1730: Elastic part

[0078] 2000: Optical element

[0079] O: Optical axis

[0080] X, Y, Z: Axes Detailed implementation manners

[0081] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs. It is understood that these terms, such as those defined in a commonly used dictionary, should be interpreted as having a meaning consistent with the relevant technology and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.

[0082] Furthermore, the ordinal numbers used in the specification and claims, such as "first", "second", etc., which are used to modify the elements of the claims, do not themselves imply or represent that the claimed element has any previous ordinal number, nor do they represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of multiple ordinal numbers is only used to clearly distinguish one claimed element with a certain name from another claimed element with the same name.

[0083] In addition, in some embodiments of the present disclosure, terms related to joining and connecting, such as "connect", "interconnect", etc., unless specifically defined, may refer to two structures being in direct contact, or may also refer to two structures not being in direct contact, with other structures disposed between these two structures. And these terms related to joining and connecting may also include the cases where both structures are movable, or both structures are fixed.

[0084] The present disclosure provides an optical element driving mechanism for driving an optical element. The optical element driving mechanism can drive the optical element (e.g., a shutter blade) to a desired position to control the amount of incident light entering an optical module (not shown). The structure thereof will be described in detail below.

[0085] Figure 1 is a perspective view of an optical element driving mechanism 1000 according to some embodiments of the present disclosure.

[0086] Figure 2 is an exploded view of an optical element driving mechanism 1000 according to some embodiments of the present disclosure. As Figure 1 shown, when viewed along the Z-axis, the outer shape of the mechanism of the optical element driving mechanism 1000 is generally circular. Please refer to Figure 1 and Figure 2 .

[0087] As Figure 1 and Figure 2 shown, the optical element driving mechanism 1000 includes a fixed part 1100, a movable part 1200, a light-shielding element 1300, a driving component 1400, a set of support elements 1500, an integrated circuit 1600, and a set of elastic elements 1700.

[0088] According to some embodiments of the present disclosure, the fixed part 1100 includes an upper cover 1110, a frame 1120, and a base 1130. The upper cover 1110 is fixedly connected to the frame 1120, and the frame 1120 is fixedly connected to the base 1130 to form a space for accommodating other elements in the optical element driving mechanism 1000.

[0089] According to some embodiments of the present disclosure, the movable part 1200 can move relative to the fixed part 1100. The optical elements 2000 are respectively connected to the frame 1120 and the movable part 1200, so as to move relative to the fixed part 1100 to a required position under the drive of the movable part 1200, thereby adjusting the light incident amount of the optical element driving mechanism 1000. According to some embodiments of the present disclosure, a light-shielding element 1300 (for example, SOMA) is disposed on the movable part 1200 to effectively suppress stray light and improve image quality.

[0090] According to some embodiments of the present disclosure, the driving assembly 1400 is used to drive the movable part 1200 to move relative to the fixed part 1100. The driving assembly 1400 includes a coil 1410, a set of magnetic elements 1420, and two magnetic conductive elements 1430. The coil 1410 is disposed on the base 1130. The magnetic elements 1420 are disposed on the movable part 1200. The magnetic conductive elements 1430 are disposed on the base 1130.

[0091] According to some embodiments of the present disclosure, the coil 1410 and the magnetic element 1420 correspond to each other. In detail, when a driving signal is applied to the driving assembly 1400 (for example, current is applied through an external power supply), an electromagnetic induction force is generated between the coil 1410 and the magnetic element 1420, and then the movable part 1200 can be driven to move relative to the fixed part 1100 to achieve the required optical effect.

[0092] According to some embodiments of the present disclosure, the support element 1500 is disposed on the frame 1120 of the fixed part 1100 and contacts the movable part 1200 to provide support for the movement of the movable part 1200 relative to the fixed part 1100 and make the movement of the movable part 1200 relative to the fixed part 1100 smoother.

[0093] According to some embodiments of the present disclosure, there is an attractive force between the magnetic conductive element 1430 disposed on the base 1130 and the magnetic element 1420 disposed on the movable part 1200. This attractive force causes the movable part 1200 to lean against the support provided by the support element 1500 to prevent the movable part 1200 from shaking in the fixed part 1100 due to external forces.

[0094] According to some embodiments of the present disclosure, the integrated circuit 1600 is disposed on the base 1130. The integrated circuit 1600 is electrically connected to the coil 1410 of the driving assembly 1400. In some embodiments, the integrated circuit 1600 has the functions of controlling the driving assembly 1400 and sensing the position of the movable part 1200 relative to the fixed part 1100 at the same time.

[0095] According to some embodiments of the present disclosure, the elastic element 1700 is connected to the lower side of the base 1130 of the fixing part 1100 through welding to connect the optical element driving mechanism 1000 to an optical module (not shown) provided with a lens or a lens module. Since the elastic element 1700 has elastic characteristics, using the elastic element 1700 to connect the optical element driving mechanism 1000 and the optical module (not shown) will improve the overall impact resistance.

[0096] In other words, when the optical element driving mechanism 1000 and the optical module (not shown) are impacted, due to the elastic characteristics of the elastic element 1700 connecting the two, it is less likely for the two to separate and disassemble due to collision.

[0097] Figure 3A It is a perspective view of the optical element driving mechanism 1000 according to some embodiments of the present disclosure, in which the upper cover 1110 of the fixing part 1100 is not shown for illustrative purposes. Figure 3B It is a perspective view of the frame 1120 of the fixing part 1100 according to some embodiments of the present disclosure. Figure 3C It is a partial schematic view of the frame 1120 according to some embodiments of the present disclosure.

[0098] Please refer to Figures 3A to 3C , the frame 1120 includes a body 1121 ( Figure 3A ), a receiving space 1122 ( Figure 3A ), a plurality of structural strengthening elements 1123 ( Figure 3B ) and a pair of grooves 1124 ( Figure 3C One of the grooves 1124 is shown).

[0099] As Figure 3A shown, the body 1121 of the frame 1120 can be made of materials such as plastic. The body 1121 of the frame 1120 includes a plurality of fixing elements 1121-1 and a plurality of fixing ends 1121-2. The movable part 1200 includes a plurality of fixing ends 1210. The plurality of fixing elements 1121-1 of the frame 1120 protrude from the top of the body 1121 along the Z-axis direction (the direction parallel to the optical axis O).

[0100] Please temporarily refer to Figure 1 and Figure 3A , as Figure 1 shown, the upper cover 1110 includes a plurality of openings 1111. The fixing elements 1121-1 ( Figure 3A ) of the frame 1120 respectively pass through the openings 1111 ( Figure 1 ) of the upper cover 1110. In this way, the upper cover 1110 and the frame 1120 can be firmly fixed together by means of riveting, plastic welding, etc.

[0101] Please refer back to Figure 3A , the fixed end 1121-2 of the frame 1120 protrudes from the top of the body 1121 in the direction of the Z-axis (parallel to the optical axis O). The fixed end 1210 of the movable part 1200 protrudes in the direction of the Z-axis (parallel to the optical axis O) on the top surface of the movable part.

[0102] As Figure 3A shown, the fixed end 1121-2 of each frame 1120 and the fixed end 1210 of each movable part 1200 respectively pass through each optical element 2000 provided on the frame 1120 and the movable part 1200. In this way, when the driving assembly 1400 ( Figure 2 ) drives the movable part 1200 to move relative to the fixed part 1100, the movable part 1200 can drive the optical element 2000 to move relative to the fixed part 1100.

[0103] As Figure 3A shown, the accommodation space 1122 of the frame 1120 is a notch on the side of the frame 1120, which accommodates the part of the base 1130 protruding upward (towards the Z-axis direction), and its details will be described in detail later. In Figure 3B , for illustrative purposes, the parts of the body 1121 that are not visible in this perspective are shown in dashed lines.

[0104] As Figure 3B shown, the structural strengthening element 1123 is a metal part embedded in the body 1121. The structural strengthening element 1123 only partially protrudes from the bottom of the body 1121 of the frame 1120, and it is used to firmly combine the frame 1120 with the base 1130 ( Figure 2 ), and its details will be described in detail later in relation to Figure 8 .

[0105] As Figure 3C shown, in some embodiments of the present disclosure, a set of support elements 1500 are four balls, which are divided into two groups and are respectively arranged in two grooves 1124 of the frame 1120. As Figure 3C shown, the two support elements 1500 are arranged along the Z-axis (parallel to the optical axis O). In this way, the multi-ball bearing configuration can reduce the risk of the movable part 1200 tipping over, thereby extending the product life.

[0106] Figure 4 is a perspective view of the base 1130 according to some embodiments of the present disclosure. As Figure 4 shown, the base 1130 includes a body 1131, a retaining wall 1132, a plurality of connecting elements 1133, and three structural strengthening elements 1134, 1135, 1136.

[0107] In Figure 4 , for the purpose of illustration, the body 1131 of the base 1130 is shown in dashed lines. As Figure 4 shown, the body 1131 of the base 1130 can be roughly divided into two parts. One part is an annular part 1131-1 whose structure is parallel to the XY plane, and the other part is a part extending along the Z axis on one side of the annular part 1131-1, that is, a convex post 1131-2 and a convex post 1131-3 standing on both sides of the retaining wall 1132 respectively.

[0108] As Figure 4 shown, the connecting element 1133 and the structural strengthening element 1134 of the base 1130 are metal parts embedded in the body 1131. Part of the connecting element 1133 of the base 1130 is embedded in the annular part 1131-1, the retaining wall 1132, and the convex posts 1131-2 and 1131-3 of the body 1131, while the three structural strengthening elements 1134, 1135, and 1136 are embedded in the annular part 1131-1 of the body 1131.

[0109] In some embodiments of the present disclosure, the structural strengthening element 1134 is disposed on the side of the body 1131 opposite to the retaining wall 1132 in the XY plane, while the structural strengthening elements 1135 and 1136 are disposed on the opposite sides of the body 1131, so that the retaining wall 1132 and the structural strengthening elements 1134, 1135, and 1136 are respectively located at the four opposite corners of the base 1130. As Figure 4 shown, the integrated circuit 1600 and the coil 1410 are disposed on the side of the retaining wall 1132 facing the optical axis O( Figure 2 ).

[0110] Figure 5A And Figure 5B shows a schematic diagram of the manufacturing process of the base 1130 according to some embodiments of the present disclosure. In the prior art, a flexible printed circuit board (FPC) is often disposed as a single component in an optical element driving mechanism. However, in the embodiments of the present disclosure, the base 1130 integrating a control element (for example, Figure 5A the integrated circuit 1600 in

[0111] ), and the connecting element 1133 replaces the base and the flexible printed circuit board in the prior art. In this way, the number of components and the assembly stations can be reduced, and the process can be simplified and the manufacturing cost can be saved.

[0111] In some embodiments of the present disclosure, in the manufacturing process, first, the retaining wall 1132 and a plurality of connecting elements 1133 are combined together by insert molding. Then, the integrated circuit 1600 is mounted on the retaining wall 1132. Then, the connecting element 1133 combined with the retaining wall 1132 forms via a bending processFigure 5A The displayed pattern.

[0112] Next, place the retaining wall 1132 and the connecting element 1133 shown in Figure 5A into the mold, and form the body 1131 shown in Figure 5B by injection molding, thereby integrating the base 1130 including the body 1131, the retaining wall 1132, the connecting element 1133, and the integrated circuit 1600.

[0113] Figure 6 Show a partially enlarged view of the optical element driving mechanism 1000 according to some embodiments of the present disclosure. As shown in Figure 6 , the body 1121 of the frame 1120 further includes a concave surface 1121-3 and a lower surface 1121-4. When observing along the direction of the vertical optical axis O (e.g., the X direction) towards the optical axis O, the concave surface 1121-3 and the lower surface 1121-4 have different heights in the direction of the optical axis O. Thus, accommodation spaces 1122 for the convex columns 1131-2, 1131-3 of the base 1130 and the retaining wall 1132 are formed between the concave surface 1121-3 and the lower surface 1121-4 of the frame 1120.

[0114] According to some embodiments of the present disclosure, the body 1131 of the base 1130 further includes a connecting structure 1131-4 in a convex shape. The connecting structure 1131-4 is located between the convex columns 1131-2, 1131-3 and below the retaining wall 1132. The connecting structure 1131-4 includes a plate structure 1131-5 and a protruding portion 1131-6 extending along the Z-axis direction from the middle of the plate structure 1131-5.

[0115] Since the protruding portion 1131-6 protrudes from the middle of the plate structure 1131-5, the protruding portion 1131-6 can generally divide the plate structure 1131-5 into left and right two parts. Two magnetic conduction elements 1430 are respectively disposed on both sides of the protruding portion 1131-6 and contact both sides of the protruding portion 1131-6 to position the two magnetic conduction elements 1430. The two magnetic conduction elements 1430 are respectively disposed on the plate structure 1131-5 on both sides of the protruding portion 1131-6.

[0116] According to some embodiments of the present disclosure, the retaining wall 1132 includes a contact portion 1132-1 ( Figure 4 ), a pair of side surfaces 1132-2 and 1132-3, a pair of front surfaces 1132-4, and a protruding portion 1132-5.

[0117] Please temporarily refer to Figure 4 , the contact portion 1132-1 of the retaining wall 1132 is parallel to the optical axis O of the retaining wall 1132 ( Figure 2) and the surface facing the optical axis O. The integrated circuit 1600 and the coil 1410 are both disposed on the contact portion 1132-1 of the retaining wall 1132.

[0118] Please refer back to Figure 6 , the side surfaces 1132-2 and 1132-3 of the retaining wall 1132 are two opposite surfaces of the retaining wall 1132. However, due to the occlusion of the protruding posts 1131-2 and 1131-3, only the edges of the side surfaces 1132-2 and 1132-3 can be seen in Figure 6 . The side surfaces 1132-2 and 1132-3 of the retaining wall 1132 are perpendicular to the contact portion 1132-1 ( Figure 4 ). The side surfaces 1132-2 and 1132-3 of the retaining wall 1132 are respectively in contact with the protruding posts 1131-2 and 1131-3.

[0119] As Figure 6 shown, the front surface 1132-4 of the retaining wall 1132 is the surface opposite to the contact portion 1132-1 ( Figure 4 ). The front surface 1132-4 of the retaining wall 1132 is perpendicular to the side surfaces 1132-2 and 1132-3. The protruding portion 1132-5 protrudes from between the two front surfaces 1132-4 in a direction away from the optical axis O ( Figure 2 ). The upper surface of the retaining wall 1132 is joined to the recessed surface 1121-3 of the frame 1120.

[0120] According to some embodiments of the present disclosure, the protruding portion 1132-5 of the retaining wall 1132 includes a protruding surface 1132-6 and a pair of side surfaces 1132-7 on both sides thereof. The protruding surface 1132-6 of the protruding portion 1132-5 of the retaining wall 1132 is parallel to the front surface 1132-4 of the retaining wall 1132. The side surfaces 1132-7 of the protruding portion 1132-5 of the retaining wall 1132 are perpendicular to the protruding surface 1132-6.

[0121] According to some embodiments of the present disclosure, when viewed from the Z-axis, the protruding portion 1131-6 of the connecting structure 1131-4 of the base 1130 is aligned with the protruding portion 1132-5 of the retaining wall 1132. The two magnetic conductive elements 1430 are respectively abutted against the side edges of the protruding portion 1131-6 of the connecting structure 1131-4 and the side surface 1132-7 of the protruding portion 1132-5 of the retaining wall 1132.

[0122] Figure 7 Shows a top view of the base 1130 and the coil 1410 according to some embodiments of the present disclosure. As Figure 7 shown, the magnetic conductive elements 1430 and the coil 1410 are respectively disposed on the outer side (the side farther from the optical axis O) and the inner side (the side closer to the optical axis O) of the retaining wall 1132.

[0123] According to some embodiments of the present disclosure, the coil 1410 includes a first edge 1411 and a second edge 1412 arranged along the Y-axis. The two magnetic conductive elements 1430 include a first edge 1431 and a second edge 1432 arranged along the Y-axis. When viewed along the Z-axis, the first edge 1411 of the coil 1410 is aligned with the first edge 1431 of the magnetic conductive element 1430 on the Y-axis. Similarly, when viewed along the Z-axis, the second edge 1412 of the coil 1410 is aligned with the second edge 1432 of the magnetic conductive element 1430 on the Y-axis.

[0124] In other words, when viewed from above the base 1130, the two ends of the magnetic conductive element 1430 and the coil 1410 on the Y-axis are aligned. In this way, the two magnetic conductive elements 1430 with the effect of concentrating magnetic force respectively directly correspond to the two ends of the coil 1430 that can generate a thrust force on the movable part 1200 ( Figure 2 ).

[0125] Compared with the configuration of using a single magnetic conductive element in the prior art, in the present disclosure, since the material in the middle of the original single magnetic conductive element is removed (for example, as can be seen from Figure 7 the protruding part 1132-5 of the retaining wall 1132 separates the two magnetic conductive elements 1430, rather than a whole magnetic conductive element 1430 being arranged on the retaining wall 1132), the effect of weight reduction can be achieved. In addition, the configuration of the protruding part 1132-5 of the retaining wall 1132 can also make the positioning of the magnetic conductive element 1430 in the process easier.

[0126] Figure 8 Shows a side view of the optical element driving mechanism 1000 according to some embodiments of the present disclosure. As Figure 8 shown, the structural strengthening element 1123 of the frame 1120 partially protrudes from the body 1121 of the frame 1120. The structural strengthening element 1136 of the base 1130 partially protrudes from the body 1131 of the base 1130. In addition, when viewed along the Z-axis direction, the multiple structural strengthening elements 1123 of the frame 1120 at least partially overlap with the structural strengthening elements 1134, 1135, 1136 of the base 1130.

[0127] According to some embodiments of the present disclosure, the structural strengthening element 1123 of the frame 1120 and the structural strengthening elements 1134 ( Figure 4 ), 1135 ( Figure 4 ), 1136 ( Figure 8 ) of the base 1130 are welded by a high-temperature process, so as to achieve the effect of strengthening the bonding strength between the frame 1120 and the base 1130.

[0128] Figure 9Shows a bottom view of the base 1130 and the elastic element 1700 according to some embodiments of the present disclosure. As Figure 9 shown, the body 1131 of the base 1130 further includes a bottom surface 1131-7, a connecting portion 1131-8, and four welding portions 1131-9. Each of the four spring elements 1700 includes a fixed end 1710, a connecting end 1720, and an elastic portion 1730.

[0129] According to some embodiments of the present disclosure, the connecting portion 1131-8 of the base 1130 is an annular structure protruding downward (in the direction of the negative Z-axis) from the bottom surface 1131-7 of the base 1130. The connecting portion 1131-8 of the base 1130 is used to connect the optical element driving mechanism 1000, which is an aperture mechanism, to an optical module (not shown) carrying a lens module.

[0130] The optical module (not shown) carrying the lens module will be located below the base 1130 of the optical element driving mechanism 1000 (that is, on the side close to the bottom surface 1131-7 of the optical element driving mechanism 1000). That is, the incident light will first pass through the optical element driving mechanism 1000 and then through the optical module (not shown) below it.

[0131] According to some embodiments of the present disclosure, the welding portion 1131-9 of the base 1130 is a structure recessed from the bottom surface 1131-7 in the Z direction. The welding portion 1131-9 of the base 1130 corresponds to the fixed end 1710 of the elastic element 1700. The fixed end 1710 of the elastic element 1700 is disposed on the bottom surface 1131-7 of the base 1130. The welding portion 1131-9 of the base 1130 and the fixed end 1710 of the elastic element 1700 are fixedly connected together by welding to fix the base 1130 and the elastic element 1700.

[0132] It should be understood that although not shown, the connecting element 1133 ( Figure 4 ) of the base 1130 located at the end of the body 1131 is exposed in the welding portion 1131-9 of the base 1130. Therefore, the integrated circuit 1600 ( Figure 4 ), the coil 1410 ( Figure 4 ) can be electrically connected to the elastic element 1700 through the connecting element 1133 ( Figure 4 ), and then electrically connected to the optical module (not shown) carrying the lens module through the elastic element 1700.

[0133] According to some embodiments of the present disclosure, the connecting end 1720 of the elastic element 1700 is used to fixedly connect to a carrier (not shown) of an optical module (not shown) that carries a lens module. The elastic portion 1730 of the elastic element 1700 is made of an elastic material. The two ends of the elastic portion 1730 of the elastic element 1700 are respectively connected to the fixed end 1710 and the connecting end 1720.

[0134] In this way, when the optical element driving mechanism 1000 as an aperture structure moves together with a carrier (not shown) of an optical module (not shown) having functions such as autofocus, etc., due to the elastic portion 1730 having elasticity, it has strong shock resistance. That is to say, the optical element driving mechanism 1000 as an aperture structure will be less likely to separate from the optical module (not shown) connected thereto due to collision.

[0135] As Figure 9 shown, the distance between the connecting portion 1131-8 of the base 1130 and the optical axis O is less than the distance between the welding portion 1131-9 of the base 1130 and the optical axis O, and the connecting portion 1131-8 of the base 1130 protrudes from the bottom surface 1131-7 of the base 1130 in the direction of the negative Z-axis. Therefore, when the optical element driving mechanism 1000 as an aperture mechanism collides with an optical module (not shown) carrying a lens module, it is less likely to be damaged at the welding point due to impact, thereby achieving the effect of extending the product life.

[0136] It should be understood that in another embodiment, the connecting portion 1131-8 of the base 1130 may also be a structure that is recessed upward (in the direction of the Z-axis) from the bottom surface 1131-7 of the base 1130. However, due to its different position from the bottom surface 1131-7 of the base 1130 in the Z-axis, it can still avoid being damaged at the welding point due to impact, and thus achieve the effect of extending the product life.

[0137] In summary, the present disclosure replaces two individual components such as a traditional flexible printed circuit board and a base with an integrated base provided with control elements and capable of conducting an electric circuit. Thereby, the number of components and assembly workstations can be reduced, and the manufacturing cost can be lowered.

[0138] The special relative positions and size relationships of the various elements disclosed in the present disclosure can not only make the optical element driving mechanism achieve overall light weight, but also strengthen the fusion joint between elements through a structure partially buried in the frame and the base, thereby achieving the effect of strengthening the overall structure.

[0139] Although the embodiments of the present utility model and their advantages have been disclosed as above, it should be understood that those skilled in the art can make changes, substitutions, and modifications without departing from the spirit and scope of the present disclosure. In addition, each claim constitutes an individual embodiment, and the protection scope of the present disclosure also includes combinations of each claim and embodiment.

[0140] The above embodiments are described in sufficient detail to enable those skilled in the art to implement the devices disclosed in the present disclosure through the above description. It must be understood that without departing from the spirit and scope of the present disclosure, some changes and modifications can be made. Therefore, the protection scope of the present disclosure shall be subject to that defined by the appended claims.

Claims

1. An optical element driving mechanism, characterized in that: include: A movable portion for connecting an optical element having an optical axis; a fixed portion, the movable portion being movable relative to the fixed portion; as well as a driving assembly for driving the movable portion to move relative to the fixed portion; The fixing part includes a base, the base includes a body, the body includes an annular portion and a pair of convex columns, the structure of the annular portion is perpendicular to the optical axis, and the pair of convex columns extend from the annular portion on one side of the annular portion in a direction parallel to the optical axis.

2. The optical element driving mechanism according to claim 1, wherein: The base also includes a retaining wall and a connecting element. The retaining wall is parallel to the optical axis and is located between the pair of convex columns. The connecting element is partially embedded in the annular portion, the retaining wall and the pair of convex columns.

3. The optical element driving mechanism according to claim 2, wherein: The baffle of the base includes a contact portion, a pair of front surfaces and a protrusion. The contact portion is the surface of the baffle facing the optical axis, the pair of front surfaces are the surfaces of the baffle facing away from the optical axis, and the protrusion protrudes from between the pair of front surfaces in a direction away from the optical axis.

4. The optical element driving mechanism according to claim 3, wherein: The driving component includes a coil and two magnetic conductive elements. The coil is arranged on the contact portion of the baffle wall. The two magnetic conductive elements are respectively arranged on the pair of front surfaces of the baffle wall, and the two magnetic conductive elements respectively contact the two sides of the protrusion to position the two magnetic conductive elements.

5. The optical element driving mechanism according to claim 2, wherein: The fixing portion also includes a frame, including a recessed surface, a lower surface and a receiving space. The recessed surface and the lower surface are planes of the frame perpendicular to the optical axis. The recessed surface and the lower surface have different heights on the optical axis. The receiving space for receiving the baffle wall and the pair of protruding columns is formed between the recessed surface and the lower surface. An upper surface of the baffle wall is connected to the recessed surface of the frame to fix the baffle wall.

6. The optical element driving mechanism according to claim 1, wherein: It also includes an elastic element, the fixed part includes a base, wherein the elastic element includes a fixed end, a connecting end and an elastic part, the base includes a bottom surface and a welding part, the welding part of the base is a structure recessed from the bottom surface along a direction parallel to the optical axis, the welding part corresponds to the fixed end of the elastic element, the fixed end of the elastic element is arranged on the bottom surface of the base, the welding part of the base and the fixed end of the elastic element are fixedly connected to the base and the elastic element by welding, the connecting end of the elastic element is used to be fixedly connected to an optical module, the elastic part of the elastic element is made of elastic material, and the two ends of the elastic part are respectively connected to the fixed end and the connecting end.

7. The optical element driving mechanism according to claim 6, wherein: The base also includes a connecting portion protruding from the bottom surface of the base along the direction of the optical axis, and the connecting portion of the base is connected to the optical module located below the optical element driving mechanism.

8. The optical element driving mechanism according to claim 1, wherein: It also includes a plurality of supporting elements, the fixed part includes a groove, two of the plurality of supporting elements are arranged in the groove of the fixed part along a direction parallel to the optical axis, and the plurality of supporting elements contact the movable part to provide support for the movement of the movable part relative to the fixed part.

9. The optical element driving mechanism according to claim 1, wherein: The fixing part comprises a frame and a base, the frame comprises a main body and a structural reinforcement element, the structural reinforcement element of the frame is partially embedded in the main body of the frame, the base comprises a main body and a structural reinforcement element, the structural reinforcement element of the base is partially embedded in the main body of the base, the structural reinforcement element of the frame and the structural reinforcement element of the base are welded together to fixedly connect the frame and the base together.

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