Patent ID: 12235571

DETAILED DESCRIPTION OF THE INVENTION

The making and using of optical element driving mechanisms of embodiments of the present disclosure are discussed in detail below. It should be appreciated, however, that the embodiments provide many applicable inventive concepts that may be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the embodiments and do not limit the scope of the disclosure.

It should be understood that, although the terms “first”, “second” etc. may be used herein to describe various elements, layers and/or portions, and these elements, layers, and/or portions should not be limited by these terms. These terms are only used to distinguish one element, layer, or portion. Thus, a first element, layer or portion discussed below could be termed a second element, layer or portion without departing from the teachings of some embodiments of the present disclosure. In addition, for the sake of brevity, terms such as “first” and “second” may not be used in the description to distinguish different elements. As long as it does not depart from the scope defined by the appended claims, the first element and/or the second element described in the appended claims can be interpreted as any element that meets the description in the specification.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It should be appreciated that each term, which is defined in a commonly used dictionary, should be interpreted as having a meaning conforming to the relative skills and the background or the context of the present disclosure, and should not be interpreted in an idealized or overly formal manner unless defined otherwise.

Firstly, please refer toFIG.1,FIG.1is a schematic view of an electrical device1according to some embodiment of the present disclosure. As shown inFIG.1, an optical element driving mechanism100of some embodiment of the present disclosure may be mounted in an electrical device1for taking photos or videos, wherein the aforementioned electrical device1may, for example, be a smartphone or a digital camera, but the present disclosure is not limited to these. It should be noted that the position and the size between the optical element driving mechanism100and the electrical device1shown inFIG.1are only an example, which is not for limiting the position and the size between the optical element driving mechanism100and the electrical device1. In fact, according to different needs, the optical element driving mechanism100may be mounted at different positions in the electrical device1

Please refer toFIG.2.FIG.2is a schematic view of the optical element driving mechanism100according to some embodiments of the present disclosure, wherein the outer frame is shown as a dashed line.FIG.3is an exploded view of the optical element driving mechanism100according to some embodiments of the present disclosure.

As shown inFIG.2andFIG.3, the optical element driving mechanism100may include a fixed part10, a movable part20, a driving assembly30, an elastic assembly40, a circuit assembly50, and a sensing element60.

The optical element driving mechanism100may have a first side100a, a second side100b, a third side100c, and a fourth side100d. According to some embodiments of the present disclosure, the first side100ais opposite to the second side100b, and the first side100aand the second side100bare parallel to each other. According to some embodiments of the present disclosure, the third side100cis opposite to the fourth side100d, and the third side100cand the fourth side100dare parallel to each other.

The movable part20may move relative to the fixed part10, and the driving assembly30may drive the movable part20to move relative to the fixed part10. The movable part20may holds an optical element OE.

The fixed part10may include an outer frame11, a frame12, and a base13. The outer frame11may be disposed on the base13to form an internal space, so as to accommodate the elements of the optical element driving mechanism100.

The movable part20may include an optical element holder21, an optical element holder guiding element22, a photosensitive element holder23, and a photosensitive element holder rolling element24.

The driving assembly30may include a driving magnetic element31, a driving coil32, and a first driving magnetic element conductive sheet33.

According to some embodiments of the present disclosure, the elastic assembly40may be disposed between the driving assembly30and the outer frame11. The elastic assembly40may include an upper elastic element41and a lower elastic element42.

The circuit assembly50may include an optical element holder circuit board51and a photosensitive element holder circuit board52. According to some embodiments of the present disclosure, the optical element holder circuit board51may be disposed on the fourth side100dof the optical element driving mechanism100.

According to some embodiments of the present disclosure, the outer frame11may have a magnetic conductive material to enhance and concentrate the magnetic force of the driving magnetic element31. According to some embodiments of the present disclosure, the frame12may include a frame metal sheet121.

The optical element holder21may include an optical element holder body211and an optical element holder stopping element212. The optical element holder21may fixedly hold the optical element OE. Therefore, the optical element OE will move with the optical element holder21when the optical element holder21is moving.

As shown in the figures, the optical element holder stopping element212may extend from the optical element holder body211toward the frame12.

According to some embodiments of the present disclosure, the optical element holder guiding element22may be disposed on the first side100aof the optical element driving mechanism100. The optical element holder guiding element22may guide the optical element holder21so that the optical element holder21may move in a desired dimension (for example, along an optical axis OA).

As shown in the figure, according to some embodiments of the present disclosure, the optical element holder guiding element22smay have a spherical shape to facilitate the stable movement of the optical element holder21along the optical axis OA.

The photosensitive element holder23may fixedly hold a photosensitive element SE. According to some embodiments of the present disclosure, the photosensitive element holder23may move along a first axis AX1and a second axis AX2that are perpendicular to the optical axis OA. According to some embodiments of the present disclosure, the photosensitive element holder23may move (rotate) around the optical axis OA.

The photosensitive element holder23may include a photosensitive element holder metal sheet231and a photosensitive element holder rolling element accommodating portion232.

According to some embodiments of the present disclosure, the driving magnetic element31may correspond to the driving coil32. The driving magnetic element31may include a first driving magnetic element311, a second driving magnetic element312, and a third driving magnetic element313.

The driving coil32includes an optical element holder driving coil321, a photosensitive element holder first driving coil322, a photosensitive element holder second driving coil323, and a photosensitive element holder third driving coil324.

According to some embodiments of the present disclosure, the upper elastic element41may be disposed above the frame12, and the lower elastic element42is disposed under the frame metal sheet121(FIG.5).

Please refer toFIG.4.FIG.4is a schematic view of the optical element driving mechanism100according to some embodiments of the present disclosure, wherein the outer frame is omitted. As shown inFIG.4, according to some embodiments of the present disclosure, the first driving magnetic element311and the second driving magnetic element312may be respectively disposed on two opposite sides of the optical element driving mechanism100. According to some embodiments of the present disclosure, the first driving magnetic element311and the second driving magnetic element312may be arranged along the first axis AX1.

According to some embodiments of the present disclosure, the first driving magnetic element311may be disposed on the first side100aof the optical element driving mechanism100. According to some embodiments of the present disclosure, the second driving magnetic element312may be disposed on the second side100bof the optical element driving mechanism100. According to some embodiments of the present disclosure, the third driving magnetic element313may be disposed on the third side100cof the optical element driving mechanism100. According to some embodiments of the present disclosure, the driving magnetic element31is not disposed on the fourth side100dof the optical element driving mechanism100

As shown inFIG.4, according to some embodiments of the present disclosure, the optical element holder driving coil321may be disposed on the optical element holder21, and the optical element holder driving coil321may correspond to the first driving magnetic element311. In other words, the optical element holder driving coil321may be disposed on the first side100aof the optical element driving mechanism100, and the optical element holder driving coil321may be disposed adjacent to the first driving magnetic element311.

According to some embodiments of the present disclosure, the first driving magnetic element conductive sheet33may be disposed between the optical element holder driving coil321and the optical element holder21. According to some embodiments of the present disclosure, the optical element holder driving coil321may be fixedly disposed on first driving magnetic element conductive sheet33.

In other words, according to some embodiments of the present disclosure, the first driving magnetic element conductive sheet33may correspond to the first magnetic driving element311. In this way, the magnetic force of the first driving magnetic element311may be concentrated, and a stronger driving force may be used to move the optical element holder21along the optical axis OA.

Please refer toFIG.4, according to some embodiments of the present disclosure, the driving coil32is not disposed between the second driving magnetic element312and the optical element holder21. According to some embodiments of the present disclosure, the driving coil32is not disposed between the third driving magnetic element313and the optical element holder21. In this way, the volume and weight of the optical element driving mechanism100may be reduced, and the effect of miniaturization may be achieved.

Please continue to refer toFIG.4, according to some embodiments of the present disclosure, the shortest distance S1between the first driving magnetic element311and the optical element holder21is greater than the shortest distance S2between the second driving magnetic element312and the optical element holder21when viewed along the optical axis OA. It should be noted that, according to some embodiments of the present disclosure, the shortest distance S1and the shortest distance S2may be parallel to the first axis AX1.

According to some embodiments of the present disclosure, the shortest distance S1between the first magnetic drive element311and the optical element holder21is greater than the shortest distance S3between the third magnetic drive element313and the optical element holder21when viewed along the optical axis OA. It should be noted that, according to some embodiments of the present disclosure, the shortest distance S3may be parallel to the second axis AX2.

According to the disclosed embodiment, the shortest distance S4between the third driving magnetic element313and the first driving magnetic element311is greater than the shortest distance S5between the third driving magnetic element313and the second driving magnetic element312when viewed along the optical axis OA.

It should be noted that, according to some embodiments of the present disclosure, the aforementioned shortest distance S4and shortest distance S5may be parallel to the first axis AX1.

That is, as shown inFIG.4, according to some embodiments of the present disclosure, the optical element holder21and the optical element OE (not shown inFIG.4) may be eccentric. Moreover, according to some embodiments of the present disclosure, the driving assembly30may be eccentric.

According to some embodiments of the present disclosure, the driving assembly center30′ of the driving assembly30may not overlap the optical element driving mechanism center100′ of the optical element driving mechanism100when viewed along the optical axis OA.

According to some embodiments of the present disclosure, an optical element center OE′ of the optical element OE may not overlap the optical element driving mechanism center100′ of the optical element driving mechanism100when viewed along the optical axis OA.

According to some embodiments of the present disclosure, the optical element center OE′ of the optical element OE may not overlap the driving assembly center30′ of the driving assembly30when viewed along the optical axis OA.

However, according to some other embodiments of the present disclosure, the optical element center OE′ of the optical element OE may overlap the driving assembly center30′ of the driving assembly30when viewed along the optical axis OA (not shown in the figures).

Please refer toFIG.5andFIG.6,FIG.5is a cross-sectional view of the optical element driving mechanism100along line A-A′ ofFIG.2, according to some embodiments of the present disclosure;FIG.6is a cross-sectional view of the optical element driving mechanism100along line B-B′ ofFIG.2, according to some embodiments of the present disclosure.

As shown inFIG.5andFIG.6, according to some embodiments of the present disclosure, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323may be disposed on the photosensitive element holder23.

As shown inFIG.5, according to some embodiments of the present disclosure, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323may correspond to the first driving magnetic element311.

According to some embodiments of the present disclosure, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32may be disposed between the first driving magnetic element311of the driving magnetic31and the photosensitive element holder23.

As shown inFIG.6, according to some embodiments of the present disclosure, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323may correspond to the second magnetic driving element312.

the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32may be disposed between the second magnetic driving element312of the driving magnetic31and the photosensitive element holder23

Please refer toFIG.7,FIG.7is a cross-sectional view of the optical element driving mechanism100along line C-C′ ofFIG.2. As shown inFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder third driving coil324may be disposed on the photosensitive element holder23.

According to some embodiments of the present disclosure, the photosensitive element holder third driving coil324may correspond to the third driving magnetic element313. According to some embodiments of the present disclosure, the photosensitive element holder third driving coil324of the driving coil32may be disposed between the third driving magnetic element313of the driving magnetic element31and the photosensitive element holder23.

Please refer toFIG.5, according to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may at least partially overlap the first driving magnetic element311of the driving magnetic element31when viewed along the optical axis OA.

According to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may not completely overlap the whole first driving magnetic element311of the driving magnetic element31when viewed along the optical axis OA.

Please refer toFIG.6, according to some embodiments of the present disclosure, the photosensitive element holder metal sheet231and the second driving magnetic element312of the driving magnetic element31may at least partially overlap when viewed along the optical axis OA.

According to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may not completely overlap the whole second driving magnetic elements312of the driving magnetic elements31when viewed along the optical axis OA.

Please refer toFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may at least partially overlap the third driving magnetic element313of the driving magnetic element31when viewed along the optical axis OA.

According to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may not completely overlap the whole third driving magnetic element313of the driving magnetic elements31when viewed along the optical axis OA.

That is, according to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may not completely overlap the whole driving magnetic element31when viewed along the optical axis OA.

The above configuration may make the photosensitive element holder23move back to the original position by magnetic force when the driving coil32of the driving assembly30does not receive current. It should be noted that the original position herein may refer to the natural resting position of the photosensitive element holder23when it is not subjected to electromagnetic driving force.

Please refer toFIG.5, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the first driving magnetic element311of the driving magnetic element31.

Please refer toFIG.6, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the second driving magnetic element312of the driving magnetic element31.

Please refer toFIG.7, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the third driving magnetic element313of the driving magnetic element31.

In other words, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the driving magnetic element31.

Please refer toFIG.5, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32.

Please refer toFIG.6, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32.

Please refer toFIG.7, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the photosensitive element holder third driving coil324of the driving coil32.

That is, according to some embodiments of the present disclosure, there may be a non-zero gap between the photosensitive element holder metal sheet231and the driving coil32.

Please refer toFIG.5, according to some embodiments of the present disclosure, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32may be disposed between the first driving magnetic element311of the driving magnetic element31and the photosensitive element holder metal sheet231.

Please refer toFIG.6, according to some embodiments of the present disclosure, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32may be disposed between the second driving magnetic element312of the driving magnetic element31and the photosensitive element holder metal sheet231.

Please refer toFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder third driving coil324of the driving coil32may be disposed between the third driving magnetic element313of the driving magnetic element31and the photosensitive element holder metal sheet231.

In other words, according to some embodiments of the present disclosure, the driving coil32may be disposed between the driving magnetic element31and the photosensitive element holder metal sheet231.

Please refer toFIG.8,FIG.8is a cross-sectional view of the optical element driving mechanism100along line D-D′ ofFIG.2. As shown inFIG.8, In accordance with some embodiments of the present disclosure, along the optical axis OA, the shortest distance S6between the optical element holder stopping element212and the frame12of the fixed part10may be shorter than the shortest distance S7between the optical element holder body211and the photosensitive element holder23.

In this way, the range of movement of the optical element holder21along the optical axis OA may be restricted, and the optical element holder21may be prevented from being in contact with the photosensitive element holder23, thereby preventing the optical element holder21and the photosensitive element holder23from damage.

Please refer toFIG.5, according to some embodiments of the present disclosure, the photosensitive element holder circuit board52may be disposed between the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32and the photosensitive element holder metal sheet231.

Please refer toFIG.6, according to some embodiments of the present disclosure, the photosensitive element holder circuit board52may be disposed between the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323of the driving coil32and the photosensitive element holder metal sheet231.

Please refer toFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder circuit board52may be disposed between the photosensitive element holder third driving coil324of the driving coil32and the photosensitive element holder metal sheet231.

In other words, according to some embodiments of the present disclosure, the photosensitive element holder circuit board52may be disposed between the driving coil32and the photosensitive element holder metal sheet231.

Please refer toFIG.5,FIG.6andFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder circuit board52may be in contact with the photosensitive element holder metal sheet231.

Please refer toFIG.5,FIG.6andFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder rolling element24may be disposed between the frame12and the photosensitive element holder23.

In this way, the photosensitive element holder23may move relative to the frame12of the fixed part10. For example, the photosensitive element holder23may move relative to the frame12of the fixed part10along the first axis AX1or the second axis AX2. For example, the photosensitive element holder23may move (rotate) relative to the frame12of the fixed part10around the optical axis OA.

Please refer toFIG.5,FIG.6andFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder rolling element24may be disposed between the frame metal sheet121and the photosensitive element holder metal sheet231.

Please refer toFIG.5,FIG.6andFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder rolling element24may be in contact with the frame metal sheet121and the photosensitive element holder metal sheet231. In this way, the frame12and the photosensitive element holder23may be avoided from being damaged, and it may be helpful for the movement of the photosensitive element holder rolling element24.

Please refer toFIG.5,FIG.6andFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder rolling element accommodating portion232may surround the photosensitive element holder rolling element24. In this way, the range of movement of the photosensitive element holder rolling element24may be limited.

Please refer toFIG.5,FIG.6andFIG.7, according to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may at least partially overlap the photosensitive element holder rolling element accommodating portion232when viewed along a direction that is perpendicular to the optical axis OA (for example, the first axis AX1or the second axis AX2).

In other words, according to some embodiments of the present disclosure, the photosensitive element holder metal sheet231may extend along the optical axis OA. By doing so, the structure of the photosensitive element holder rolling element accommodating portion232may be strengthened, and the damage to the photosensitive element holder rolling element accommodating portion232may be avoided.

Please refer toFIG.5,FIG.6andFIG.7, according to some embodiments of the present disclosure, the lower elastic element42may be in contact with the frame metal sheet121, and the photosensitive element holder rolling element24may not have a metal material.

According to some embodiments of the present disclosure, the lower elastic element42may have a metal material, so that the lower elastic element42may be electrically connected to the frame metal sheet121.

In some embodiments where the photosensitive element holder rolling element24does not have a metal material, even if the photosensitive element holder rolling element24is in direct contact with the frame metal sheet121and the photosensitive element holder metal sheet231, the frame metal sheet121and the photosensitive element holder metal sheet231is still not electrically connected through the photosensitive element holder rolling element24. However, according to some embodiments of the present disclosure, the frame metal sheet121and the photosensitive element holder metal sheet231may be electrically connected to each other through other elements.

According to some embodiments of the present disclosure, an external current may flow into the optical element driving mechanism100from the optical element holder circuit board51, and then flow into the frame metal sheet121, the lower elastic element42and the optical element holder driving coil321of the driving coil32of the driving assembly30in sequence.

In this way, the optical element holder21and the optical element OE may be driven to move along the optical axis OA. Moreover, it may contribute to the connection of the driving coil32with external electric current.

According to some embodiments of the present disclosure, an external current may flow into the optical element driving mechanism100from the optical element holder circuit board51, and then flow into the photosensitive element holder metal sheet231and the photosensitive element holder first driving coil322, the photosensitive element holder second driving coil323and the photosensitive element holder third driving coil324of the driving assembly30.

In this way, the photosensitive element holder23and the photosensitive element SE may be driven to move along the first axis AX1or the second axis AX2. Alternatively, the photosensitive element holder23and the photosensitive element SE may be driven to move around the optical axis OA. Moreover, it may contribute to the connection of the driving coil32with external electric current.

According to some embodiments of the present disclosure, the optical element holder guiding element22may have a rod shape (not shown in the figures), and the optical element holder guiding element22may have a metal material. Moreover, an external current may flow into the optical element driving mechanism100from the optical element holder circuit board51, and then flow into the optical element holder guiding element22, and the optical element holder driving coil321of the driving coil32of the driving assembly30in sequence.

In this way, the optical element holder21and the optical element OE may be driven to move along the optical axis OA. Moreover, it may contribute to the connection of the driving coil32with external electric current.

In this embodiment (the optical element holder guiding element22may have a rod shape), the photosensitive element holder rolling element24may have a metal material without affecting the current flow inside the optical element driving mechanism100.

According to some embodiments of the present disclosure, the optical element holder circuit board51may be attached to the optical element holder21(not shown in the figures), so that an external current may flow directly from the optical element holder circuit board51to the optical element holder driving coil321of the driving coil32of the driving assembly30.

In this embodiment (the optical element holder circuit board51is attached to the optical element holder21), the photosensitive element holder rolling element24may have a metal material without affecting the current flow inside the optical element driving mechanism100.

According to some embodiments of the present disclosure, the direction of the current of the photosensitive element holder first driving coil322and the direction of the current of the photosensitive element holder second driving coil323may be the same when viewed along the optical axis OA (for example, the directions of the currents are clockwise or the directions of the currents are counterclockwise when viewed along the optical axis OA).

In this way, when the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323receive the currents with the same direction ((for example, the directions of the currents are clockwise or the directions of the currents are counterclockwise when viewed along the optical axis OA), the photosensitive element holder23and the photosensitive element SE may be driven to move along the first axis AX1(positively or negatively).

According to some embodiments of the present disclosure, the direction of the current of the photosensitive element holder first driving coil322and the direction of the current of the photosensitive element holder second driving coil323may be different when viewed along the optical axis OA (for example, the direction of one of the currents is clockwise while the direction of the other currents are counterclockwise when viewed along the optical axis OA).

In this way, when the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323receive the currents with different directions when viewed along the optical axis OA (for example, the direction of one of the currents is clockwise while the direction of the other currents are counterclockwise when viewed along the optical axis OA), the photosensitive element holder23and the photosensitive element SE may be driven to move (rotate) around the optical axis OA (clockwise or counterclockwise).

According to some embodiments of the present disclosure, the photosensitive element holder23and the photosensitive element SE may be driven to move along the second axis AX2(positively or negatively) when the photosensitive element holder third driving coil324receives current.

Please refer toFIG.9,FIG.9is a cross-sectional view of the optical element driving mechanism100along line E-E′ ofFIG.2, wherein the magnetic field lines of the first driving magnetic element311and the magnetic field lines of the second driving magnetic element312are illustrated.

It should be noted that, inFIG.9, the lines with arrows represent magnetic field lines of the first driving magnetic element311or the second magnetic driving element312, wherein the directions of the magnetic field lines shown inFIG.9(as indicated by arrows) is only an example, which is not for limiting the embodiments of the present disclosure.

As shown inFIG.9, according to some embodiments of the present disclosure, the magnetic force emitting surface (perpendicular to the magnetic field lines) of the first driving magnetic element311may be parallel to the optical axis OA. For example, the magnetic force emitting surface of the first driving magnetic element311may be perpendicular to the first axis AX1.

In this way, the optical element holder driving coil321may receive more magnetic force of the first driving magnetic element311, and a stronger driving force may be used to move the optical element holder21along the optical axis OA.

Please continue to refer toFIG.9, the first driving magnetic element311may correspond to the optical element holder driving coil321, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323at the same time. In this way, the number of required elements may be reduced, and the effect of miniaturization may be achieved.

As shown inFIG.9, according to some embodiments of the present disclosure, the sensing element60may be disposed on the optical element holder21. Moreover, the sensing element60may correspond to the magnetic force emission surface of the first driving magnetic element311. In this way, the sensing element60may receive more of the magnetic force of the first driving magnetic element311, and thus it may sense the position of the optical element holder21more accurately.

Please refer toFIG.9, according to some embodiments of the present disclosure, the magnetic force emitting surface (perpendicular to the magnetic field lines) of the second driving magnetic element312may be perpendicular to the optical axis OA. In this way, the photosensitive element holder first driving coil322and the photosensitive element holder second driving coil323may receive more magnetic force of the second driving magnetic element312, so that a stronger driving force may be used to move the photosensitive element holder23along the first axis AX1or to move (rotate) around the optical axis OA.

Please refer toFIG.10,FIG.10is a cross-sectional view of the optical element driving mechanism100along line F-F′ ofFIG.2, wherein the magnetic field lines of the third driving magnetic element313are illustrated.

It should be noted that, inFIG.10, the lines with arrows represent magnetic field lines of the third driving magnetic element313, wherein the directions of the magnetic field lines shown inFIG.10(as indicated by arrows) is only an example, which is not for limiting the embodiments of the present disclosure.

As shown inFIG.10, according to some embodiments of the present disclosure, the magnetic force emitting surface (perpendicular to the magnetic field lines) of the third driving magnetic element313may be perpendicular to the optical axis OA. Thus, the photosensitive element holder third driving coil324may receive more magnetic force of the third driving magnetic element313, and a stronger driving force may be used to move the photosensitive element holder23along the second axis AX2.

Please refer toFIG.11,FIG.11is a schematic view of an optical element driving mechanism200according to some other embodiments of the present disclosure, wherein the outer frame is shown as a dashed line. The main elements and the configuration of the optical element driving mechanism200is similar to the main elements and the configuration of optical element driving mechanism100, and the similar parts will not be repeated.

As shown inFIG.11, the main difference between the optical element driving mechanism200and the optical element driving mechanism100is that the driving coil32of the driving assembly30of the optical element driving mechanism200may further include an optical element holder second driving coil325.

According to some embodiments of the present disclosure, the optical element holder second driving coil32may be disposed on the optical element holder21, and the optical element holder second driving coil32may correspond to the second magnetic driving element312.

In this way, a stronger driving force may be used to move the optical element holder21along the optical axis OA.

According to some embodiments of the present disclosure, the photosensitive element holder23of the movable part20of the optical element driving mechanism100and the optical element driving mechanism200may not include the photosensitive element holder rolling element accommodating portion232. Instead, the frame12of the fixed part10may include a photosensitive element holder rolling element accommodating portion (not shown in the drawings). Similarly, the photosensitive element holder rolling element accommodating portion (not shown in the figure) of the frame12may surround the photosensitive element holder rolling element24(not shown inFIG.11) to limit the range of movement of the photosensitive element holder rolling element24.

In general, the optical element driving mechanism of the embodiment of the present disclosure may drive the optical element holder to move along the optical axis by using a single driving magnetic element, and it may drive the photosensitive element holder to move along a direction that is perpendicular to the optical axis or to move (rotate) around the optical axis by using the same driving magnetic element. Furthermore, the optical element driving mechanism of the embodiment of the present disclosure may have an eccentric driving assembly, an eccentric optical element holder, and an eccentric optical element. Therefore, the volume and weight of the optical element driving mechanism may be reduced, and the effect of miniaturization may be achieved.

Furthermore, the optical element driving mechanism of the embodiment of the present disclosure may use magnetic force to return the photosensitive element holder to the original position by using the photosensitive element holder metal sheet. The optical element driving mechanism of the embodiment of the present disclosure may also electrically connect the elements of the optical element driving mechanism to an external circuit through the frame metal sheet. Moreover, the configuration of the magnetic force emitting surface of the driving magnetic element of the optical element driving mechanism of the embodiment of the present disclosure may be helpful for driving the optical element holder. Therefore, the volume and weight of the optical element driving mechanism may be reduced, and the effect of miniaturization may be achieved.

Although embodiments of the present disclosure and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the spirit and scope of the disclosure as defined by the appended claims. For example, it will be readily understood by those skilled in the art that many of the features, functions, processes, and materials described herein may be varied while remaining within the scope of the present disclosure. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present disclosure, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present disclosure. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps. In addition, the scope of the present disclosure is defined by the scope of the appended claims. In addition, each scope of the claims is constructed as a separate embodiment, and various combinations of the claims and combinations of embodiments are within the scope of the present disclosure.