Optical element driving mechanism

Abstract

An optical element driving mechanism comprises a fixed part, a movable part and a first driving assembly. The movable part is connected with an optical element with an optical axis. The movable part can move relative to the fixed part. The first driving assembly is configured to drive 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 having a driving component. Background Art

[0002] With the development of technology, many current electronic devices (such as smart phones or digital cameras) have functions of taking pictures 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 pictures or videos usually are provided with a driving mechanism for an optical element, and 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 miniaturization and light weight, so how to effectively miniaturize and lighten the driving mechanism for an optical element 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. The driving mechanism for an optical element includes a fixed part, a movable part, and a first driving component. The movable part is connected to an optical element having an optical axis. The movable part can move relative to the fixed part. The first driving component is configured to drive the movable part to move relative to the fixed part.

[0006] According to some embodiments of the present disclosure, the first driving component includes a first magnetic element, a first coil, and a second coil. The first coil and the second coil correspond to the first magnetic element. The winding axes of the first coil and the second coil are not parallel to each other, and when observed along the optical axis, the first coil and the second coil at least partially overlap.

[0007] According to some embodiments of the present disclosure, the shortest distance between the first coil and the first magnetic element is different from the shortest distance between the second coil and the first magnetic element.

[0008] According to some embodiments of the present disclosure, the first magnetic element includes a first surface and a second surface. The first surface faces the first coil, the second surface faces the second coil, and the first surface and the second surface face different directions.

[0009] According to some embodiments of the present disclosure, the first coil and the second coil are respectively used to generate a driving force to make the movable part move relative to the fixed part in a first dimension.

[0010] According to some embodiments of the present disclosure, the optical element driving mechanism further includes a position sensing element for sensing the movement of the movable part. The first surface of the first magnetic element faces the position sensing element.

[0011] According to some embodiments of the present disclosure, when the movable part moves in the first dimension, the shortest distance between the first surface of the first magnetic element and the first coil changes. When the movable part moves in the first dimension, the shortest distance between the second surface of the first magnetic element and the second coil does not change.

[0012] According to some embodiments of the present disclosure, the structures of the first coil and the second coil are different. The thickness of the first coil is different from the thickness of the second coil. When viewed along the optical axis direction, the first coil and the position sensing element at least partially overlap, and the first coil and the second coil are electrically connected in series.

[0013] According to some embodiments of the present disclosure, the first driving assembly further includes a second magnetic element, a third coil, and a fourth coil. The third coil and the fourth coil correspond to the second magnetic element. The first magnetic element is parallel to the second magnetic element. The winding axes of the third coil and the fourth coil are not parallel to each other, and the first coil, the second coil, the third coil, and the fourth coil are electrically connected in series. When viewed along the optical axis, the first magnetic element and the second magnetic element are located on both sides of the optical axis.

[0014] According to some embodiments of the present disclosure, the first driving assembly further includes a third magnetic element, a fifth coil, and a sixth coil. The third magnetic element is not parallel to the first magnetic element and the second magnetic element. The fifth coil and the sixth coil correspond to the third magnetic element to enable the movable part to move in a second dimension, and the second dimension movement is different from the first dimension movement.

[0015] The beneficial effects of the present utility model are that the special configuration of the driving assembly of the present utility model enables the optical element driving mechanism of the present utility model to push a movable part with a relatively large mass with a small and lightweight driving assembly. In addition, through the optimization of the structural design, the present utility model reduces a plurality of complex components and lowers the assembly difficulty. Description of the Drawings

[0016] 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 2Exploded view of an optical element driving mechanism according to some embodiments of the present disclosure.

[0019] Figure 3A Perspective view showing a first driving assembly, a first circuit element, a second circuit element, and a position sensing element of a portion disposed on a base.

[0020] Figure 3B Exploded view showing a first driving assembly, a first circuit element, a second circuit element, and a position sensing element of a portion disposed on a base.

[0021] Figure 4 Side view schematic diagram showing a first driving assembly of a portion.

[0022] Figure 5 Perspective view showing a first movable portion and a second movable portion as viewed from below upwards.

[0023] Figure 6A Perspective view showing a first movable portion and a first magnetic conductive element, a second magnetic conductive element, a third magnetic conductive element, a magnetic conductive element, and a connecting element embedded in the first movable portion, wherein for illustrative purposes, the first movable portion is shown in dashed lines.

[0024] Figure 6B Perspective view of an optical element driving mechanism of a portion according to some embodiments of the present disclosure.

[0025] Figure 6C Exploded view showing a second movable portion, a position sensing element, a magnetic element, a coil, a magnetic conductive element, and a circuit element.

[0026] Figure 7 Block diagram of an optical element driving mechanism according to some embodiments of the present disclosure.

[0027] Reference numerals are as follows:

[0028] 1000: Optical element driving mechanism

[0029] 1100: Fixed portion

[0030] 1110: Upper cover

[0031] 1120: Base

[0032] 1121: Side wall

[0033] 1122, 1123: Retaining wall

[0034] 1124: Terminal

[0035] 1200: Movable portion

[0036] 1210: First movable portion

[0037] 1211: Groove

[0038] 1212: Receiving part

[0039] 1213: Opening

[0040] 1214: First stop part

[0041] 1215: Second stop part

[0042] 1220: Second movable part

[0043] 1221: Contact part

[0044] 1222: Accommodating part

[0045] 1300: Guide element

[0046] 1400: First driving component

[0047] 1411: First magnetic element

[0048] 1411-1: First surface

[0049] 1411-2: Second surface

[0050] 1412: First coil

[0051] 1413: Second coil

[0052] 1414: First magnetic conductive element

[0053] 1421: Second magnetic element

[0054] 1422: Third coil

[0055] 1423: Fourth coil

[0056] 1424: Second magnetic conductive element

[0057] 1431: Third magnetic element

[0058] 1432: Fifth coil

[0059] 1433: Sixth coil

[0060] 1434: Third magnetic conductive element

[0061] 1500: First circuit component

[0062] 1510: First circuit element

[0063] 1520: Second circuit element

[0064] 1610,1620,1630: Position sensing element

[0065] 1700: Second driving component

[0066] 1710: Magnetic element

[0067] 1720: Coil

[0068] 1730, 1740: Magnetic conduction element

[0069] 1800: Second circuit component

[0070] 1811: Welding part

[0071] 1810: Circuit element

[0072] 1820: Connecting element

[0073] 1830: Elastic element

[0074] 1831: First connection point

[0075] 1832: Second connection point

[0076] 1833: Connecting wire

[0077] 1834: Extension part

[0078] 1840: Supporting element

[0079] 1910, 1920: Suppressing element

[0080] 2000: Aperture mechanism

[0081] W1, W2, W3, W4, W5, W6: Winding axis

[0082] X, Y, Z: Axis

[0083] O: Optical axis Detailed implementation manner

[0084] 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 to have 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.

[0085] Furthermore, the ordinal numbers used in the specification and claims, such as "first", "second", etc., are used to modify the elements of the claims. They 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, or the order in the manufacturing method. The use of multiple ordinal numbers is only to clearly distinguish one claimed element with a certain name from another claimed element with the same name.

[0086] 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 therebetween. And these terms related to joining and connecting may also include the cases where both structures are movable, or both structures are fixed.

[0087] Figure 1 is a perspective view of an optical element driving mechanism 1000 according to some embodiments of the present disclosure.

[0088] Figure 2 is an exploded view of the optical element driving mechanism 1000 according to some embodiments of the present disclosure. Please first refer to Figure 1 and Figure 2 .

[0089] As Figure 1 and Figure 2 shown, the optical element driving mechanism 1000 includes a fixed part 1100, a movable part 1200, a pair of guiding elements 1300, a first driving assembly 1400, a first circuit assembly 1500, three position sensing elements 1610, 1620, 1630, a second driving assembly 1700, a second circuit assembly 1800, and restraining elements 1910( Figure 6C ), 1920( Figure 6B ).

[0090] According to some embodiments of the present disclosure, the fixed part 1100 includes an upper cover 1110 and a base 1120. The upper cover 1110 is fixedly connected to the base 1120 to form a space for accommodating other elements of the optical element driving mechanism 1000.

[0091] According to some embodiments of the present disclosure, the movable part 1200 is movable relative to the fixed part 1100. The movable part 1200 includes a first movable part 1210 and a second movable part 1220. The second movable part 1220 is movable relative to the first movable part 1210. The second movable part 1220 may be a carrier for connecting an optical element (not shown) having an optical axis O.

[0092] Specifically, the first movable part 1210 can move relative to the fixed part 1100 to achieve the optical effect of optical image stabilization (OIS). The second movable part 1220 can move relative to the first movable part 1210 and the fixed part 1100 to achieve the optical effect of auto focus (AF).

[0093] According to some embodiments of the present disclosure, the guiding element 1300 can be a guide rod. The guiding element 1300 is fixedly arranged on the first movable part 1210. The guiding element 1300 can guide the movement of the second movable part 1220 relative to the first movable part 1210.

[0094] According to some embodiments of the present disclosure, the first driving assembly 1400 is used to drive the first movable part 1210 (which will drive the second movable part 1220 carrying the optical element (not shown) accordingly) to move relative to the fixed part 1100.

[0095] According to some embodiments of the present disclosure, the first driving assembly 1400 is electrically connected to the first circuit assembly 1500. The first circuit assembly 1500 includes a first circuit element 1510 and a second circuit element 1520. The position sensing elements 1610 and 1620 are configured to sense the position of the first movable part 1210 relative to the fixed part 1100, and the details will be described in detail below.

[0096] According to some embodiments of the present disclosure, the first driving assembly 1400 includes a first magnetic element 1411 ( Figure 2 ), two first coils 1412 ( Figure 3A ), two second coils 1413 ( Figure 3A ), a first magnetic conduction element 1414 ( Figure 6A ), a second magnetic element 1421 ( Figure 5 ), two third coils 1422 ( Figure 3A ), two fourth coils 1423 ( Figure 3A ), a second magnetic conduction element 1424 ( Figure 6A ), a third magnetic element 1431 ( Figure 2 ), two fifth coils 1432 ( Figure 3A ), two sixth coils 1433 ( Figure 3A ) and a third magnetic conduction element 1434 ( Figure 6A ).

[0097] As shown in Figure 2 , the first magnetic element 1411 and the third magnetic element 1431 are arranged on the first movable part 1210. In addition, although the second magnetic element 1421 is in Figure 2The perspective in Figure 5 also shows that the second magnetic element 1421 is disposed on the first movable portion 1210, and the second magnetic element 1421 is disposed on a side of the first movable portion 1210 opposite to the first magnetic element 1411. The first magnetic element 1411 is parallel to the second magnetic element 1421.

[0098] Please refer to Figure 2 and Figure 3A , the third magnetic element 1431 is not parallel to the first magnetic element 1411 and the second magnetic element 1421. The first coil 1412 and the second coil 1413 correspond to the first magnetic element 1411. The third coil 1422 and the fourth coil 1423 correspond to the second magnetic element 1421. The fifth coil 1432 and the sixth coil 1433 correspond to the third magnetic element 1431.

[0099] According to some embodiments of the present disclosure, the first circuit element 1510 is perpendicular to the second circuit element 1520. The first coil 1412, the third coil 1422, and the fifth coil 1432 are disposed on different surfaces of the first circuit element 1510 facing the optical axis O( Figure 2 ). The second circuit element 1520 is located in a plane perpendicular to the optical axis O.

[0100] For example, the first coil 1412 is disposed on a surface of the first circuit element 1510 opposite to the third coil 1422, and the fifth coil 1432 is disposed on a surface of the first circuit element 1510 perpendicular to the first coil 1412 and the third coil 1422.

[0101] Similarly, the second coil 1413 is disposed on a side of the second circuit element 1520 opposite to the fourth coil 1423, and the sixth coil 1433 is disposed on a side of the second circuit element 1520 adjacent to the second coil 1413 and the fourth coil 1423.

[0102] Please refer back to Figure 2 , the position sensing elements 1610, 1620 are respectively disposed on different sides of the first circuit element 1510, and the position sensing elements 1610, 1620 are used to sense the movement of the first movable portion 1210 relative to the fixed portion 1100. The position sensing element 1610 corresponds to the first magnetic element 1411. The position sensing element 1620 corresponds to the third magnetic element 1431.

[0103] Specifically, the position sensing element 1610 can sense the magnetic field change of the first magnetic element 1411, and determine the position of the first moving part 1210 on the X-axis through a control element (not shown). The position sensing element 1620 can sense the magnetic field change of the third magnetic element 1431, and determine the position of the first moving part 1210 on the Y-axis through the control element (not shown).

[0104] According to some embodiments of the present disclosure, the second driving assembly 1700 is configured to drive the second moving part 1220 to move relative to the fixed part 1100 and the first moving part 1210. The second driving assembly 1700 includes a magnetic element 1710, a coil 1720, and two magnetic conduction elements 1730( Figure 6C ), 1740( Figure 6C ).

[0105] As Figure 2 shown, the magnetic element 1710 is disposed on the second moving part 1220, and the coil 1720 is disposed on the first moving part 1210. In this way, when a driving signal is applied to the second driving assembly 1700 (for example, current is applied through an external power supply), an electromagnetic induction force is generated between the coil 1720 and the magnetic element 1710, driving the second moving part 1220 to move relative to the first moving part 1210, and then relative to the fixed part 1100, so as to achieve the desired optical effect.

[0106] According to some embodiments of the present disclosure, the second driving assembly 1700 is electrically connected to an external circuit (not shown) via the second circuit assembly 1800. The second circuit assembly 1800 includes a circuit element 1810, a connecting element 1820( Figure 6A ), four elastic elements 1830, and four supporting elements 1840.

[0107] As Figure 2 shown, the circuit element 1810 is disposed on the side of the first moving part 1210 opposite to the third magnetic element 1431. The position sensing element 1630 and the coil 1720 are disposed on the circuit element 1810. The position sensing element 1630 is used to sense the movement of the second moving part 1220 relative to the first moving part 1210.

[0108] Specifically, the position sensing element 1630 corresponds to the magnetic element 1710 disposed on the second moving part 1220. The position sensing element 1630 can be an all-in-one integrated circuit (All-in-one IC) that encapsulates a sensing integrated circuit and a control integrated circuit in the same package, so that the position sensing element 1630 determines the position of the second moving part 1220 by sensing the magnetic field change of the magnetic element 1710, and then controls the second moving part 1220 to move to the desired position to achieve closed-loop control.

[0109] According to some embodiments of the present disclosure, the elastic element 1830 may be a spring piece. The elastic element 1830 is movably connected to the first movable part 1210 and the second movable part 1220. The support element 1840 may be a suspension wire. The support element 1840 supports the movement of the movable part 1200 relative to the fixed part 1100. The support element 1840 is substantially parallel to the optical axis O. The upper end of the support element 1840 is connected to the elastic element 1830 by soldering. The lower end of the support element 1840 is fixed to the base 1120.

[0110] Figure 3A A perspective view showing the first driving assembly 1400, the first circuit element 1510, the second circuit element 1520, and the position sensing elements 1610, 1620 disposed on the base 1120. Figure 3B An exploded view showing the first driving assembly 1400, the first circuit element 1510, the second circuit element 1520, and the position sensing elements 1610, 1620 disposed on the base 1120.

[0111] As Figure 3A shown, when observed along the optical axis O (Z-axis), the first coil 1412 and the second coil 1413 at least partially overlap. As Figure 3B shown, the winding axis W1 of the first coil 1412 and the winding axis W2 of the second coil 1413 are not parallel to each other. In detail, the winding axis W1 of the first coil 1412 and the winding axis W2 of the second coil 1413 are perpendicular to each other. For example, the winding axis W1 of the first coil 1412 is parallel to the X-axis, and the winding axis W2 of the second coil 1413 is parallel to the Z-axis.

[0112] Similarly, the winding axis W3 of the third coil 1422 and the winding axis W4 of the fourth coil 1423 are not parallel to each other, but perpendicular to each other, and when observed along the optical axis O, the third coil 1422 and the fourth coil 1423 at least partially overlap. The winding axis W5 of the fifth coil 1432 and the winding axis W6 of the sixth coil 1433 are not parallel to each other, but perpendicular to each other, and when observed along the optical axis O, the fifth coil 1432 and the sixth coil 1433 at least partially overlap.

[0113] As Figure 3A and Figure 3BAs shown, the position sensing element 1610 is disposed in the hollow position of the annular structure of the first coil 1412, and the position sensing element 1620 is disposed in the hollow position of the annular structure of the fifth coil 1432. When viewed along the optical axis O direction, the first coil 1412 and the position sensing element 1610 at least partially overlap. When viewed along the optical axis O direction, the fifth coil 1432 and the position sensing element 1620 at least partially overlap.

[0114] It should be noted that disposing the position sensing elements 1610 and 1620 on the side of the optical element driving mechanism 1000 (for example, on the first circuit element 1510) rather than on the bottom (for example, on the second circuit element 1520) has the following effect: Even when the moving part 1200 ( Figure 2 ) of the optical element driving mechanism 1000 flips, it does not affect the position judgment of the position sensing elements 1610 and 1620 in the X-axis and Y-axis directions, and more accurate position information can be sensed compared to being disposed on the bottom.

[0115] According to some embodiments of the present disclosure, the first coil 1412 and the second coil 1413 are respectively used to generate a driving force to move the moving part 1200 ( Figure 2 ) relative to the fixed part 1100 ( Figure 2 ) in a first dimension. The first dimension movement in this embodiment refers to movement on the X-axis.

[0116] Similarly, the third coil 1422 and the fourth coil 1423 are also respectively used to generate a driving force to move the moving part 1200 ( Figure 2 ) relative to the fixed part 1100 ( Figure 2 ) in a first dimension. The first dimension movement in this embodiment refers to movement on the X-axis. The first coil 1412, the second coil 1413, the third coil 1422, and the fourth coil 1423 are electrically connected in series. In this way, the first coil 1412, the second coil 1413, the third coil 1422, and the fourth coil 1423 can be driven and controlled simultaneously.

[0117] In addition, the fifth coil 1432 and the sixth coil 1433 are respectively used to generate a driving force to move the moving part 1200 ( Figure 2 ) relative to the fixed part 1100 ( Figure 2 ) in a second dimension. The second dimension movement is different from the first dimension movement. The second dimension movement in this embodiment refers to movement on the Y-axis.

[0118] As Figure 3A and Figure 3BAs shown, the base 1120 includes a side wall 1121, two retaining walls 1122, 1123, and a terminal 1124. The side wall 1121 is located on a side opposite to the fifth coil 1432. The retaining walls 1122, 1123 are respectively located at two adjacent corners of the base 1120. The terminal 1124 can electrically connect the first circuit element 1510 and the second circuit element 1520 to an external circuit (not shown).

[0119] According to some embodiments of the present disclosure, the first coil 1412 is positioned between one end of the side wall 1121 and one end of the retaining wall 1122. The third coil 1422 is positioned between one end of the side wall 1121 and one end of the retaining wall 1123. The fifth coil 1432 is positioned between one end of the retaining wall 1122 and one end of the retaining wall 1123.

[0120] Figure 4 A side view schematic diagram of the first driving assembly 1400 of the display portion. For illustrative purposes, the first magnetic element 1411 can be regarded as including a first surface 1411-1 and a second surface 1411-2. The first surface 1411-1 and the second surface 1411-2 face different directions. The first surface 1411-1 faces the first coil 1412, and the second surface 1411-2 faces the second coil 1413.

[0121] As Figure 4 shown, the first surface 1411-1 of the first magnetic element 1411 faces the position sensing element 1610( Figure 3B ). The shortest distance between the first coil 1412 and the first magnetic element 1411 is different from the shortest distance between the second coil 1413 and the first magnetic element 1411.

[0122] It should be noted that when the movable part 1200( Figure 2 ) moves in the first dimension (movement on the X-axis), the shortest distance between the first surface 1411-1 of the first magnetic element 1411 and the first coil 1412 changes accordingly. When the movable part 1200 moves in the first dimension (movement on the X-axis), the shortest distance between the second surface 1411-2 of the first magnetic element 1411 and the second coil 1413 does not change accordingly.

[0123] According to some embodiments of the present disclosure, the structures of the first coil 1412 and the second coil 1413 are different, and the thicknesses of the first coil 1412 and the second coil 1413 are different. For example, in some embodiments, the first coil 1412 can be a flat coil (FPCoil), while the second coil 1413 can be a well-known wound coil.

[0124] It should be noted that under the aforementioned coil configuration of the present utility model, a magnetic element (for example, the first magnetic element 1411) corresponds to two coils arranged perpendicular to each other (for example, the first coil 1412 and the second coil 1413). In the prior art, coils are usually only arranged on the side or lower part of the magnetic element (that is, on one side of the magnetic element). To achieve the driving force realized by the configuration of the present utility model, the prior art needs to use thicker magnets and larger-sized coils. Therefore, through the configuration of the first driving assembly 1400 of the present utility model, the miniaturization and light weight of the optical element driving mechanism 1000 with a large driving force can be achieved.

[0125] Figure 5 A perspective view showing the first movable part 1210 and the second movable part 1220 as viewed from below upwards. As Figure 5 shown, when viewed along the optical axis O (Z-axis), the first magnetic element 1411 and the second magnetic element 1421 are located on both sides of the optical axis.

[0126] Figure 6A A perspective view showing the first movable part 1210 and the first magnetic guiding element 1414, the second magnetic guiding element 1424, the third magnetic guiding element 1434, the magnetic guiding element 1730, and the connecting element 1820 embedded in the first movable part 1210. For illustrative purposes, the first movable part 1210 is shown in dashed lines.

[0127] Figure 6B A perspective view showing a part of the optical element driving mechanism 1000 according to some embodiments of the present disclosure. Figure 6C An exploded view showing the second movable part 1220, the position sensing element 1630, the magnetic element 1710, the coil 1720, the magnetic guiding elements 1730, 1740, and the circuit element 1810.

[0128] Please first refer to Figure 6B , each of the elastic elements 1830 includes a first connection point 1831, a second connection point 1832, a connection line 1833, and an extension part 1834. The first connection point 1831 and the second connection point 1832 are respectively at both ends of the connection line 1833. The first connection point 1831 is arranged on the second movable part 1220, and the second connection point 1832 is arranged on the first movable part 1210.

[0129] It can be noted that the first connection point 1831 is arranged on the second movable part 1220 on the side closer to the guiding element 1300, while the second connection point 1832 is arranged on the first movable part 1210 on the side farther from the guiding element 1300. The connection line 1833 is connected to the extension part 1834 by the second connection point 1832. The support element 1840 is connected to the extension part 1834.

[0130] Please refer to Figure 6A and Figure 6B . The first movable part 1210 includes a pair of grooves 1211( Figure 6B ), a receiving part 1212( Figure 6A ), a pair of openings 1213( Figure 6B ), a first stopping part 1214( Figure 6A ), and a second stopping part 1215( Figure 6A ).

[0131] According to some embodiments of the present disclosure, the grooves 1211 of the first movable part 1210 can accommodate the guiding element 1300 to fix the guiding element 1300 on the first movable part 1210. The grooves 1211 are located on the first stopping part 1214 of the first movable part 1210.

[0132] According to some embodiments of the present disclosure, the receiving part 1212 of the first movable part 1210 receives the circuit element 1810( Figure 6C ) disposed thereon. As shown in Figure 6A , the magnetic conduction element 1730 is partially embedded in the receiving part 1212 of the first movable part 1210. It should be noted that Figure 6A only shows a part of the magnetic conduction element 1730, and its whole is shown in Figure 6C .

[0133] As shown in Figure 6C , the position sensing element 1630 and the coil 1720 are disposed on the circuit element 1810 and are electrically connected to the circuit element 1810. The circuit element 1810 is disposed in the receiving part 1212 of the first movable part 1210( Figure 6A ). The circuit element 1810 includes four welding parts 1811.

[0134] As shown in Figure 6B , the welding parts 1811 of the circuit element 1810 and the connecting element 1820 connected thereto can be seen from the opening 1213 of the first movable part 1210. In this way, during the assembly of the optical element driving mechanism 1000, the circuit element 1810 can be electrically connected to the connecting element 1820 by welding the welding parts 1811 of the circuit element 1810 and the connecting element 1820 through the opening 1213 of the first movable part 1210.

[0135] According to some embodiments of the present disclosure, when the second movable part 1220 moves along the optical axis O to a first limit position, the suppressing element 1910( Figure 6C ) disposed on the second movable part 1220 will first contact the first stopping part 1214( Figure 6B)'s lower surface. Similarly, when the second movable part 1220 moves along the optical axis O to a second limit position, a suppression element (not shown) provided on the second movable part 1220 will first contact the upper surface of the second stopper part 1215( Figure 6A ).

[0136] As Figure 6C shown in, the second movable part 1220 includes a pair of contact parts 1221 and a receiving part 1222. The two contact parts 1221 are respectively located on both sides of the receiving part 1222. The contact part 1221 contacts the guiding element 1300( Figure 2 ) serving as a guide rod, so that the second movable part 1220 can move more smoothly relative to the first movable part 1210( Figure 2 ) under the support of the guiding element 1300.

[0137] According to some embodiments of the present disclosure, the magnetic guiding element 1740 is embedded in the receiving part 1222 of the second movable part 1220. The magnetic element 1710 is located in the receiving part 1222 of the second movable part 1220. The magnetic guiding element 1730 is partially embedded in the first movable part 1210( Figure 6A ), and the circuit element 1810 is connected to the magnetic guiding element 1730.

[0138] In this way, an attractive force is generated between the magnetic element 1710 provided on the second movable part 1220 and the magnetic guiding element 1730 provided on the first movable part 1210, so that the second movable part 1220 abuts against the guiding element 1300( Figure 6B ) in the direction, and the movement of the second movable part 1220 relative to the first movable part 1210 is smoother and less likely to shake, overturn, etc.

[0139] As Figure 6B shown in, a suppression element 1920 is provided on one side of the opening 1213 of the first movable part 1210 to buffer the possible impact between the first movable part 1210 and the fixed part 1100( Figure 2 ). Specifically, the suppression elements 1910( Figure 6C ) and 1920 of the present disclosure have a hollow structure and are made of materials such as rubber, and can be used to suppress noise and buffer the impact force.

[0140] As Figure 6A and Figure 6C shown in, the first magnetic guiding element 1414, the second magnetic guiding element 1424, the third magnetic guiding element 1434, and the magnetic guiding element 1740 can enhance the magnetic force of the corresponding first magnetic element 1411, second magnetic element 1421, third magnetic element 1431, and magnetic element 1710.

[0141] It should be understood that the coil 1720 of the second driving component 1700 ( Figure 6C ) is sequentially electrically connected to an external circuit (not shown) via a circuit element 1810 ( Figure 6C ), a connecting element 1820 ( Figure 6A ), an elastic element 1830 ( Figure 6B ) and a supporting element 1840 ( Figure 6B ).

[0142] Figure 7 FIG. shows a block diagram of an optical element driving mechanism 1000 according to some embodiments of the present disclosure, in which an aperture mechanism 2000 is assembled on the second movable part 1220. That is to say, the aperture mechanism 2000 is disposed on the second movable part 1220 to control the amount of incident light entering the second movable part 1220, so as to achieve the desired optical effect.

[0143] It should be noted that the aperture mechanism 2000 is electrically connected to the elastic element 1830 via a first connection point 1831 ( Figure 6B ) of the elastic element 1830. The circuit element 1810 ( Figure 6B ) is electrically connected to a second connection point 1832 ( Figure 6B ) of the elastic element 1830 via the connecting element 1820 ( Figure 6B ).

[0144] In summary, the special configuration of the driving component of the present utility model enables the optical element driving mechanism of the present utility model to push a movable part with a larger mass by a small and lightweight driving component. In addition, through the optimization of the structural design, the present utility model reduces a plurality of complex components and lowers the assembly difficulty.

[0145] Although the embodiments of the present utility model and their advantages have been disclosed 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 the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, characterized in that: include: a fixing portion; a movable portion connected to an optical element having an optical axis, and the movable portion is movable relative to the fixed portion; as well as A first driving assembly is used to drive the movable part to move relative to the fixed part.

2. The optical element driving mechanism according to claim 1, wherein: The first drive assembly comprises: a first magnetic element; and A first coil and a second coil corresponding to the first magnetic element; The winding axes of the first coil and the second coil are not parallel to each other, and when observed along the optical axis, the first coil and the second coil at least partially overlap.

3. The optical element driving mechanism according to claim 2, wherein: The shortest distance between the first coil and the first magnetic element is different from the shortest distance between the second coil and the first magnetic element.

4. The optical element driving mechanism according to claim 2, wherein: The first magnetic element includes a first surface and a second surface, the first surface faces the first coil, the second surface faces the second coil, and the first surface and the second surface face different directions.

5. The optical element driving mechanism according to claim 4, characterized in that: The first coil and the second coil are respectively used to generate a driving force to make the movable part move relative to the fixed part in a first dimension.

6. The optical element driving mechanism according to claim 5, characterized in that: The device also includes a position sensing element for sensing the movement of the movable part. The first surface of the first magnetic element faces the position sensing element.

7. The optical element driving mechanism according to claim 6, wherein: When the movable portion moves in the first dimension, the shortest distance between the first surface of the first magnetic element and the first coil changes accordingly; When the movable portion moves in the first dimension, the shortest distance between the second surface of the first magnetic element and the second coil does not change.

8. The optical element driving mechanism according to claim 6, wherein: The first coil has a different structure from the second coil, and the thickness of the first coil is different from the thickness of the second coil. When observed along the optical axis, the first coil at least partially overlaps the position sensing element, and the first coil is electrically connected to the second coil in series.

9. The optical element driving mechanism according to claim 5, characterized in that: The first drive assembly also includes: a second magnetic element; and a third coil and a fourth coil corresponding to the second magnetic element; The first magnetic element is parallel to the second magnetic element, the winding axes of the third coil and the fourth coil are not parallel to each other, and the first coil, the second coil, the third coil and the fourth coil are electrically connected in series; When observed along the optical axis, the first magnetic element and the second magnetic element are located on two sides of the optical axis.

10. The optical element driving mechanism according to claim 9, wherein: The first drive assembly also includes: a third magnetic element, which is not parallel to the first magnetic element and the second magnetic element; and A fifth coil and a sixth coil correspond to the third magnetic element so as to make the movable part move in a second dimension, and the second dimensional movement is different from the first dimensional movement.

Images