Patent Description:
The present disclosure relates to an optical element driving mechanism, and in particular it relates to an optical element driving mechanism having flat wire coils. In particular, the present invention relates to an optical driving mechanism as defined in the precharacterizing part of independent claim <NUM>. Such driving mechanisms are described in <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, and <CIT>.

As technology has developed, many of today's electronic devices (such as smartphones) have a camera or video functionality. Using the camera modules disposed on electronic devices, users can operate their electronic devices to capture photographs and record videos.

Today's design of electronic devices continues to follow the trend of miniaturization, meaning that the various components of the camera module or its structure must also be continuously reduced, so as to achieve miniaturization. In general, a driving mechanism in the camera module has a camera lens holder configured to hold a camera lens, and the driving mechanism can have the functions of auto focusing or optical image stabilization. However, although the existing driving mechanism can achieve the aforementioned functions of photographing or video recording, they still cannot meet all the needs of the users.

Therefore, how to design a camera module that can perform autofocus, optical image stabilization and achieve miniaturization is a topic nowadays that needs to be discussed and solved.

One objective of the present disclosure is to provide an optical element driving mechanism to solve the problems described above. An optical element driving mechanism according to the invention is defined in independent claim <NUM>. The dependent claims define preferred embodiments thereof. The embodiment of <FIG> falls under the scope of the claims. All the other embodiments do not fall under the scope of the claims but are nevertheless necessary to better understand the invention.

Compared with a conventional round wire, the area occupied by the flat wire coil of the present disclosure can be reduced so that the size of the lens holder can be reduced further to achieve the purpose of miniaturization. In addition, a flat wire coil achieves better driving efficiency than a round wire coil with the same number of turns.

Additional features and advantages of the disclosure will be set forth in the description which follows, and, in part, will be obvious from the description, or can be learned by practice of the principles disclosed herein. The features and advantages of the disclosure can be realized and obtained by means of the instruments and combinations pointed out in the appended claims.

In the following detailed description, for the purposes of explanation, numerous specific details and embodiments are set forth in order to provide a thorough understanding of the present disclosure. The specific elements and configurations described in the following detailed description are set forth in order to clearly describe the present disclosure. It will be apparent, however, that the exemplary embodiments set forth herein are used merely for the purpose of illustration, and the inventive concept can be embodied in various forms without being limited to those exemplary embodiments. In addition, the drawings of different embodiments can use like and/or corresponding numerals to denote like and/or corresponding elements in order to clearly describe the present disclosure. However, the use of like and/or corresponding numerals in the drawings of different embodiments does not suggest any correlation between different embodiments. The directional terms, such as "up", "down", "left", "right", "front" or "rear", are reference directions for accompanying drawings. Therefore, using the directional terms is for description instead of limiting the disclosure.

In this specification, relative expressions are used. For example, "lower", "bottom", "higher" or "top" are used to describe the position of one element relative to another. It should be appreciated that if a device is flipped upside down, an element at a "lower" side will become an element at a "higher" side.

The terms "about" and "substantially" typically mean +/- <NUM>% of the stated value, more typically +/- <NUM>% of the stated value and even more typically +/- <NUM>% of the stated value. The stated value of the present disclosure is an approximate value. When there is no specific description, the stated value includes the meaning of "about" or "substantially".

Please refer to <FIG>. <FIG> is a schematic diagram of an optical element driving mechanism <NUM>-<NUM> according to an embodiment of the present disclosure. <FIG> is an exploded diagram of the optical element driving mechanism <NUM>-<NUM> according to an embodiment of the present disclosure, and <FIG> is a cross-sectional view of the optical element driving mechanism <NUM>-<NUM> along line <NUM>-A-<NUM>-A' in <FIG> according to an embodiment of the present disclosure. The optical element driving mechanism <NUM>-<NUM> can be an optical camera module configured to hold an optical element. The optical element driving mechanism <NUM>-<NUM> can be installed in various electronic devices or portable electronic devices, such as a smartphone, for allowing a user to perform the image capturing function. In this embodiment, the optical element driving mechanism <NUM>-<NUM> can be a voice coil motor (VCM) with an auto-focusing (AF) function, but it is not limited thereto. In other embodiments, the optical element driving mechanism <NUM>-<NUM> can also perform the functions of auto-focusing and optical image stabilization (OIS).

In the present embodiment, the optical element driving mechanism <NUM>-<NUM> can include a fixed assembly <NUM>-FA, a movable assembly <NUM>-MA, and a driving assembly <NUM>-DA. The movable assembly <NUM>-MA is movably connected to the fixed assembly <NUM>-FA, and the movable assembly <NUM>-MA is configured to hold the optical element (not shown in the figures). The driving assembly <NUM>-DA is configured to drive the movable assembly <NUM>-MA to move relative to the fixed assembly <NUM>-FA.

In this embodiment, as shown in <FIG>, the fixed assembly <NUM>-FA includes a casing <NUM>-<NUM> and a base <NUM>-<NUM>. The movable assembly <NUM>-MA includes a lens holder <NUM>-<NUM> and the aforementioned optical element, and the lens holder <NUM>-<NUM> is configured to hold the optical element.

As shown in <FIG>, the casing <NUM>-<NUM> has a hollow structure, and a casing opening <NUM>-<NUM> is formed thereon, and a base opening <NUM>-<NUM> is formed on the base <NUM>-<NUM>. The center of the casing opening <NUM>-<NUM> corresponds to the optical axis <NUM>-O of the optical element, and the base opening <NUM>-<NUM> corresponds to a photosensitive element (not shown) disposed under the base <NUM>-<NUM>. The external light can enter the casing <NUM>-<NUM> from the casing opening <NUM>-<NUM> to be received by the photosensitive element after passing through the optical element and the base opening <NUM>-<NUM> so as to generate a digital image signal.

Furthermore, the casing <NUM>-<NUM> is disposed on the base <NUM>-<NUM> and may have an accommodating space <NUM>-<NUM> for accommodating the movable assembly <NUM>-MA (including the aforementioned optical element and the lens holder <NUM>-<NUM>) and the driving assembly <NUM>-DA.

The movable assembly <NUM>-MA may further include a first elastic member <NUM>-<NUM> and a second elastic member <NUM>-<NUM>. The outer portion (the outer ring portion) of the first elastic member <NUM>-<NUM> is fixed to an inner wall surface of the casing <NUM>-<NUM>, the outer portion (the outer ring portion) of the second elastic member <NUM>-<NUM> is fixed to the base <NUM>-<NUM>, and the inner portions (the inner ring portions) of the first elastic member <NUM>-<NUM> and the second elastic member <NUM>-<NUM> are respectively connected to the upper and lower sides of the lens holder <NUM>-<NUM>, so that the lens holder <NUM>-<NUM> can be suspended in the accommodating space <NUM>-<NUM>.

In this embodiment, the driving assembly <NUM>-DA may include a plurality of driving magnets <NUM>-MG and a driving coil <NUM>-DCL. The driving coil <NUM>-DCL is disposed on the lens holder <NUM>-<NUM>, and the plurality of driving magnets <NUM>-MG respectively correspond to the driving coil <NUM>-DCL and are disposed on the inner wall surface of the casing <NUM>-<NUM>.

In this embodiment, the driving coil <NUM>-DCL may be a wound coil and be disposed on the lens holder <NUM>-<NUM>, and a winding axis of the driving coil <NUM>-DCL may be parallel to the optical axis <NUM>-O. When the driving coil <NUM>-DCL is provided with electricity, the driving coil <NUM>-DCL acts with the driving magnets <NUM>-MG to generate an electromagnetic force, so as to drive the lens holder <NUM>-<NUM> and the held optical element to move relative to the base <NUM>-<NUM> along the optical axis <NUM>-O (the Z-axis).

Furthermore, the optical element driving mechanism <NUM>-<NUM> of the present disclosure further includes a circuit assembly <NUM>-<NUM> electrically connected to the driving assembly <NUM>-DA. The circuit assembly <NUM>-<NUM> may be further to be electrically connected to an external circuit, such as a main circuit board of an external electronic device, so that the driving assembly <NUM>-DA can operate according to the signal of the external electronic device.

Furthermore, in this embodiment, the circuit assembly <NUM>-<NUM> is disposed inside the base <NUM>-<NUM>. For example, the base <NUM>-<NUM> is made of plastic material, and the circuit assembly <NUM>-<NUM> is formed in the base <NUM>-<NUM> by the molded interconnect device (MID) technology.

Please refer to <FIG>. <FIG> is a schematic bottom view of the second elastic member <NUM>-<NUM> and the lens holder <NUM>-<NUM> according to an embodiment of the present disclosure, <FIG> is a partial enlarged diagram of <FIG> according to an embodiment of the present disclosure, and <FIG> is a side view of a partial structure of the second elastic member <NUM>-<NUM> and the lens holder <NUM>-<NUM> according to an embodiment of the present disclosure. In this embodiment, the second elastic member <NUM>-<NUM> and the first elastic member <NUM>-<NUM> can be referred to as a metal assembly, the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA further includes a winding member <NUM>-<NUM>, and a leading wire <NUM>-WL of the driving coil <NUM>-DCL is disposed on a winding member surface <NUM>-<NUM> of the winding member <NUM>-<NUM>.

In addition, as shown in <FIG>, the circuit assembly <NUM>-<NUM> may further include an electrical connection element <NUM>-AE, the electrical connection element <NUM>-AE may be a conductive glue, which may contain a conductive material, for example silver or resin material, but it not limited to. The electrical connection element <NUM>-AE is disposed between the second elastic member <NUM>-<NUM> and the winding member <NUM>-<NUM>, so that the driving coil <NUM>-DCL is electrically connected to the second elastic member <NUM>-<NUM> via the leading wire <NUM>-WL.

In this embodiment, as shown in <FIG>, the second elastic member <NUM>-<NUM> has a plate-shaped structure and defines an extending direction, the extending direction may be parallel to the XY plane, and the extending direction is perpendicular to the optical axis <NUM>-O. When viewed along the optical axis <NUM>-O (the Z-axis), at least <NUM>% of the total area of the winding member surface <NUM>-<NUM> is covered by the second elastic member <NUM>-<NUM>. As shown in <FIG>, the second elastic member <NUM>-<NUM> covers all the winding member surface <NUM>-<NUM>.

In addition, it is worth noting that an extending direction <NUM>-ED1 of the winding member <NUM>-<NUM> is parallel to an extending direction of the second elastic member <NUM>-<NUM>. As shown in <FIG>, both the winding member <NUM>-<NUM> and the second elastic member <NUM>-<NUM> extend leftward (along the XY plane).

Please refer to <FIG>, which is a side view of a partial structure of the second elastic member <NUM>-<NUM> and the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. In this embodiment, the leading wire <NUM>-WL may include a metal layer <NUM>-ML and an insulating layer <NUM>-IL. Before the second elastic member <NUM>-<NUM> is installed on the lens holder <NUM>-<NUM>, part of the insulating layer <NUM>-IL can be removed using a laser to expose the metal layer <NUM>-ML, and then the leading wire <NUM>-WL can be electrically connected to the second elastic member <NUM>-<NUM> by the electrical connection element <NUM>-AE. It should be noted that in this embodiment, the laser only removes the insulating layer <NUM>-IL at upper side of the metal layer <NUM>-ML, but in other embodiments, the insulating layer <NUM>-IL at both sides (the upper and lower sides) of the metal layer <NUM>-ML can also be removed.

Please refer to <FIG>, which is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. In this embodiment, the winding member <NUM>-<NUM> also has a glue receiving groove <NUM>-<NUM> formed by the winding member surface <NUM>-<NUM>, and the glue receiving groove <NUM>-<NUM> is configured to receive at least part of the electrical connection element <NUM>-AE. Based on the design of the glue receiving groove <NUM>-<NUM> of this embodiment, the bonding strength between the winding member <NUM>-<NUM> and the leading wire <NUM>-WL can be increased.

Please refer to <FIG>, which is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. In this embodiment, the winding member <NUM>-<NUM> has two side walls <NUM>-109W, and the glue receiving groove <NUM>-<NUM> is formed between the two side walls <NUM>-109W. A plurality of positioning grooves <NUM>-<NUM> may be formed on the two side walls <NUM>-109W, for example, formed by the winding member surface <NUM>-<NUM>. These positioning grooves <NUM>-<NUM> are configured to position the leading wire <NUM>-WL.

Please refer to <FIG> and <FIG> is a cross-sectional view along line <NUM>-B-<NUM>-B' of <FIG> according to an embodiment of the present disclosure. As shown in <FIG>, the positioning grooves <NUM>-<NUM> can separate the two adjacent leading wires <NUM>-WL, so that when the electrical connection element <NUM>-AE is provided, the electrical connection element <NUM>-AE can flow to the glue receiving groove <NUM>-<NUM> through the gap between the two leading wires <NUM>- WL. Based on the design of the positioning grooves <NUM>-<NUM> of this embodiment, the adhesive area of the winding member <NUM>-<NUM> and the electrical connection element <NUM>-AE can be increased, thereby increasing the bonding strength.

In addition, as shown in <FIG> and <FIG>, the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA further includes a movable assembly surface <NUM>-<NUM>, which is not parallel to the winding member surface <NUM>-<NUM>, and the electrical connection element <NUM>-AE is in direct contact with the movable assembly surface <NUM>-<NUM>. That is, the electrical connection element <NUM>-AE can fill up the glue receiving groove <NUM>-<NUM>.

Please refer to <FIG>, which is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. As shown in <FIG>, in this embodiment, the glue receiving groove <NUM>-<NUM> is formed by the movable assembly surface <NUM>-<NUM> toward the optical axis <NUM>-O, and the glue receiving groove <NUM>-<NUM> is connected to the winding member <NUM>-<NUM> and configured to receive at least part of the electrical connection element <NUM>-AE. Based on the structural configuration of this embodiment, the contact area of the electrical connection element <NUM>-AE and the leading wire <NUM>-WL can be increased, and the accuracy of setting the electrical connection element <NUM>-AE can be increased.

Please refer to <FIG> and <FIG>. <FIG> is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure, and <FIG> is a side view of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. In this embodiment, the winding member <NUM>-<NUM> may have a blocking wall <NUM>-<NUM> protruding from the winding member surface <NUM>-<NUM>. The blocking wall <NUM>-<NUM> is configured to limit the movement of the electrical connection element <NUM>-AE in the extending direction <NUM>-ED1 of the winding member <NUM>-<NUM>.

Based on the structural configuration of this embodiment, the electrical connection element <NUM>-AE can overflow from the winding member surface <NUM>-<NUM> toward the side walls <NUM>-109W on both sides so as to increase the contact area between the electrical connection element <NUM>-AE and leading wire <NUM>-WL.

Please refer to <FIG> is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure, and <FIG> is a cross-sectional view along the line <NUM>-C-<NUM>-C' in <FIG> according to another embodiment of the present disclosure. In this embodiment, the second elastic member <NUM>-<NUM> further has a through hole <NUM>-<NUM>, and when viewed in a direction (such as the Z-axis) perpendicular to the extending direction <NUM>-ED1, the electrical connection element <NUM>-AE and part of the winding member <NUM>-<NUM> can be seen through the through hole <NUM>-<NUM>.

Based on the design of the through hole <NUM>-<NUM> of the present disclosure, the operator can easily observe the state of connection between the electrical connection element <NUM>-AE and the winding member <NUM>-<NUM> and between the electrical connection element <NUM>-AE and the leading wire <NUM>-WL.

Please refer to <FIG>, which is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. In this embodiment, the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA has a groove <NUM>-<NUM> and a concave groove <NUM>-<NUM>. The groove <NUM>-<NUM> is connected to the winding member <NUM>-<NUM> and configured to accommodate the leading wire <NUM>-WL. The winding direction of the leading wire <NUM>-WL can be indicated by the arrow in <FIG>. The concave groove <NUM>-<NUM> is disposed in the groove <NUM>-<NUM> and configured to accommodate the electrical connection element <NUM>-AE, and the groove <NUM>-<NUM> and the concave groove <NUM>-<NUM> have different depths. For example, the depth of the concave groove <NUM>-<NUM> in the Z-axis is greater than the depth of the groove <NUM>-<NUM>, so that the electrical connection element <NUM>-AE can be easily disposed in the concave groove <NUM>-<NUM>.

It is worth noting that, in this embodiment, the insulating layer of the leading wire <NUM>-WL located at (and/or adjacent to) the concave groove <NUM>-<NUM> is removed, so that the leading wire <NUM>-WL is electrically connected to the second elastic member <NUM>-<NUM> through the electrical connection element <NUM>-AE in the concave groove <NUM>-<NUM>. In this embodiment, the insulating layer of the leading wire <NUM>-WL located on the winding member <NUM>-<NUM> is not removed.

As shown in <FIG>, the groove <NUM>-<NUM> further has a bending receiving portion <NUM>-1081C, and part of the leading wire <NUM>-WL is located at the bending receiving portion <NUM>-1081C. Specifically, the bending receiving portion <NUM>-1081C may be a corner structure, and the insulating layer of the leading wire <NUM>-WL on the corner structure is not removed to avoid the problem of easy breakage caused by the bending of the leading wire <NUM>-WL.

Please refer to <FIG>, which is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. In this embodiment, the optical element driving mechanism <NUM>-<NUM> further includes two protruding posts <NUM>-108P, which are disposed on the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA, and the leading wire <NUM>-WL of the driving coil <NUM>-DCL can be wound on the protruding post <NUM>-108P in a direction of the arrow in <FIG>. In this embodiment, the protruding post <NUM>-108P extends in a direction (for example, the Z-axis) parallel to a winding axis of the driving coil <NUM>-DCL.

Similar to the previous embodiment, the lens holder <NUM>-<NUM> also has a groove <NUM>-<NUM> and a concave groove <NUM>-<NUM>. The groove <NUM>-<NUM> is configured to accommodate the leading wire <NUM>-WL, and the concave groove <NUM>-<NUM> is disposed in the groove <NUM>-<NUM> and is configured to accommodate the electrical connection element <NUM>-AE. It is worth noting that the protruding post <NUM>-108P is not disposed in the concave groove <NUM>-<NUM>. Because the winding member <NUM>-<NUM> is omitted, the lens holder <NUM>-<NUM> can be further miniaturized.

The assembly procedure of the lens holder <NUM>-<NUM>, the driving coil <NUM>-DCL and the second elastic member <NUM>-<NUM> can be described as follows: winding the leading wire <NUM>-WL around the protruding post <NUM>-108P in the direction of the arrow in <FIG>, setting the electrical connection element <NUM>-AE in the concave groove <NUM>-<NUM>, then using the protruding posts <NUM>-108P to position the second elastic member <NUM>-<NUM> on the lens holder <NUM>-<NUM>, and finally connecting the second elastic member <NUM>-<NUM> to the lens holder <NUM>-<NUM> by hot rivet. After the hot rivet process, the height of the protruding posts <NUM>-108P are decreased.

Please refer to <FIG>, which is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. Similar to the previous embodiment, the lens holder <NUM>-<NUM> also has a groove <NUM>-<NUM> and a concave groove <NUM>-<NUM>. The groove <NUM>-<NUM> is configured to accommodate the leading wire <NUM>-WL, and the concave groove <NUM>-<NUM> is connected to the groove <NUM>-<NUM> and configured to accommodate the electrical connection element <NUM>-AE.

Specifically, in this embodiment, the groove <NUM>-<NUM> and the concave groove <NUM>-<NUM> may have the same depth, and the protruding post <NUM>-108P is disposed in the concave groove <NUM>-<NUM>. Similar to the previous embodiment, after the hot rivet process, the height of the protruding post <NUM>-108P is reduced, for example, to be approximately equal to the depth of the concave groove <NUM>-<NUM>.

Based on the structural configuration of this embodiment, the electrical connection element <NUM>-AE can be covered by the second elastic member <NUM>-<NUM> without overflowing the concave groove <NUM>-<NUM>, thereby increasing the convenience in the manufacturing process.

Please refer to <FIG>, which is a schematic diagram of a partial structure of the lens holder <NUM>-<NUM> according to another embodiment of the present disclosure. In this embodiment, the concave groove <NUM>-<NUM> is formed by a side wall <NUM>-108W of the lens holder <NUM>-<NUM>, and the protruding post <NUM>-108P is disposed adjacent to the side wall <NUM>-108W. Based on the structural configuration of this embodiment, the leading wire <NUM>-WL can be more easily wound on the protruding post <NUM>-108P.

Similar to the foregoing embodiment, the second elastic member <NUM>-<NUM> is thermally riveted to the protruding post <NUM>-108P after the electrical connection element <NUM>-AE is disposed in the concave groove <NUM>-<NUM>. In various embodiments of the present disclosure, the protruding post <NUM>-108P can be configured to position the second elastic member <NUM>-<NUM>.

Please refer to <FIG> and <FIG>. <FIG> is a bottom view of the lens holder <NUM>-<NUM> and the second elastic member <NUM>-<NUM> after the process of hot rivet according to another embodiment of the present disclosure, and <FIG> is a schematic side view of the lens holder <NUM>-<NUM> and the second elastic member <NUM>-<NUM> after the process of hot rivet according to an embodiment of the present disclosure. As shown in <FIG>, when viewed along the optical axis <NUM>-O (the Z-axis), the protruding post <NUM>-108P overlaps at least part of the lens holder <NUM>-<NUM> and overlaps at least part of the second elastic member <NUM>-<NUM>. Specifically, the protruding post <NUM>-108P is covered by the second elastic member <NUM>-<NUM> without being exposed.

As shown in <FIG>, when viewed in a direction (for example, the Y-axis) perpendicular to the optical axis <NUM>-O, the protruding post <NUM>-108P is located between the second elastic member <NUM>-<NUM> and the lens holder <NUM>-<NUM>. The protruding post <NUM>-108P is covered by the lens holder <NUM>-<NUM> without being exposed.

The present disclosure provides an optical element driving mechanism <NUM>-<NUM>. In some embodiments, two winding members <NUM>-<NUM> may be disposed on the lens holder <NUM>-<NUM> and may serve as an initial end and a finished end of the driving coil <NUM>-DCL, respectively. After the leading wire <NUM>-WL of the driving coil <NUM>-DCL is wound around the two winding members <NUM>-<NUM>, the electrical connection element <NUM>-AE can be disposed between the winding members <NUM>-<NUM> and the second elastic member <NUM>-<NUM>, so that the leading wire <NUM>-WL is electrically connected to the second elastic member <NUM>-<NUM>.

Based on the structural design of the present disclosure, in the manufacturing process of the optical element driving mechanism <NUM>-<NUM>, the electrical connection element <NUM>-AE can be automatically set to achieve the electrical connection, and there is no need to connect the leading wire <NUM>-WL and the second elastic member <NUM>-<NUM> by welding through the operator, so that the purpose of reducing process complexity and improving process efficiency can be achieved.

In this embodiment, as shown in <FIG>, the fixed assembly <NUM>-FA includes a casing <NUM>-<NUM>, a frame <NUM>-<NUM> and a base <NUM>-<NUM>. The movable assembly <NUM>-MA includes a lens holder <NUM>-<NUM> and the aforementioned optical element, and the lens holder <NUM>-<NUM> is used for holding the optical element. A main axis <NUM>-AX can be defined by the fixed assembly <NUM>-FA, and an optical axis <NUM>-O can be defined by the optical element. The main axis <NUM>-AX may , for example, overlap the optical axis <NUM>-O, but it is not limited thereto.

As shown in <FIG>, the casing <NUM>-<NUM> has a hollow structure, and a casing opening <NUM>-<NUM> is formed thereon, and a base opening <NUM>-<NUM> is formed on the base <NUM>-<NUM>. The center of the casing opening <NUM>-<NUM> corresponds to the optical axis <NUM>-O of the optical element, and the base opening <NUM>-<NUM> corresponds to a photosensitive element (not shown) disposed under the base <NUM>-<NUM>. The external light can enter the casing <NUM>-<NUM> from the casing opening <NUM>-<NUM> to be received by the photosensitive element after passing through the optical element and the base opening <NUM>-<NUM> so as to generate a digital image signal. In this embodiment, a light-incident end and a light-exiting end may be defined by the optical element driving mechanism <NUM>-<NUM>, and the light-incident end may be a light emitting source above the optical element driving mechanism <NUM>-<NUM> in <FIG>, and the light-exiting end may be a light receiving end under the optical element driving mechanism <NUM>-<NUM> in <FIG>.

Furthermore, the casing <NUM>-<NUM> is disposed on the base <NUM>-<NUM> and may have an accommodating space <NUM>-<NUM> for accommodating the movable assembly <NUM>-MA (including the aforementioned optical element and the lens holder <NUM>-<NUM>) and the driving assembly <NUM>-DA. The frame <NUM>-<NUM> is fixed to the casing <NUM>-<NUM> and disposed in the accommodating space <NUM>-<NUM>.

The movable assembly <NUM>-MA may further include a first elastic member <NUM>-<NUM> and a second elastic member <NUM>-<NUM>. The outer portion (the outer ring portion) of the first elastic member <NUM>-<NUM> is fixed to the frame <NUM>-<NUM>, the outer portion (the outer ring portion) of the second elastic member <NUM>-<NUM> is fixed to the base <NUM>-<NUM>, and the inner portions (the inner ring portions) of the first elastic member <NUM>-<NUM> and the second elastic member <NUM>-<NUM> are respectively connected to the upper and lower sides of the lens holder <NUM>-<NUM>, so that the lens holder <NUM>-<NUM> can be suspended in the accommodating space <NUM>-<NUM>. That is, the elastic elements are elastically connected to the movable assembly <NUM>-MA and the fixed assembly <NUM>-FA.

In this embodiment, the driving assembly <NUM>-DA may include a first magnet <NUM>-MG11, a second magnet <NUM>-MG12, a first coil <NUM>-CL11, and a second coil <NUM>-CL12. The first coil <NUM>-CL11 and the second coil <NUM>-CL12 are disposed on the lens holder <NUM>-<NUM>, and the first magnet <NUM>-MG11 and the second magnet <NUM>-MG12 are disposed on the inner wall surface of the casing <NUM>-<NUM> respectively corresponding to the first coil <NUM>-CL11 and the second coil <NUM>-CL12.

In this embodiment, the first coil <NUM>-CL11 and the second coil <NUM>-CL12 may be wound coils (oval coils) and be disposed on opposite sides of the lens holder <NUM>-<NUM>. When the first coil <NUM>-CL11 and the second coil <NUM>-CL12 are provided with electricity, the first coil <NUM>-CL11 and the second coil <NUM>-CL12 respectively act with the first magnet <NUM>-MG11 and the second magnet <NUM>-MG12 to generate an electromagnetic force, so as to drive the lens holder <NUM>-<NUM> and the held optical element to move relative to the base <NUM>-<NUM> along the optical axis <NUM>-O (the Z-axis).

Furthermore, the optical element driving mechanism <NUM>-<NUM> of the present disclosure further includes a circuit assembly <NUM>-<NUM> and the circuit member <NUM>-<NUM> configured to be electrically connected to the driving assembly <NUM>-DA. The circuit assembly <NUM>-<NUM> may be a circuit board configured to be electrically connected to an external circuit, such as a main circuit board of an external electronic device, so that the driving assembly <NUM>-DA can operate according to the signal of the external electronic device.

Furthermore, in this embodiment, the circuit member <NUM>-<NUM> is disposed inside the base <NUM>-<NUM>. For example, the base <NUM>-<NUM> is made of plastic material, and the circuit member <NUM>-<NUM> is formed in the base <NUM>-<NUM> by the molded interconnect device (MID) technology.

Please refer to <FIG>. <FIG> is a perspective view of the optical element driving mechanism <NUM>-<NUM> after removing the casing <NUM>-<NUM> according to an embodiment of the present disclosure, and <FIG> is a partial enlarged diagram of the optical element driving mechanism <NUM>-<NUM> according to an embodiment of the present disclosure. In this embodiment, the circuit member <NUM>-<NUM> has a plurality of electrical connection terminals <NUM>-<NUM>, protruding from the base <NUM>-<NUM>, and each of the electrical connection terminals <NUM>-<NUM> may include a straight portion <NUM>-<NUM> and a bent portion <NUM>-<NUM>.

When viewed in a direction perpendicular to the main axis <NUM>-AX (for example, in the Y-axis), the straight portion <NUM>-<NUM> is closer to the light-incident end of the optical element driving mechanism <NUM>-<NUM> than the bent portion <NUM>-<NUM>. Specifically, the straight portion <NUM>-<NUM> extends in the +Z-axis from the bent portion <NUM>-<NUM>, and the straight portion <NUM>-<NUM> may be parallel to the optical axis <NUM>-O, for example, but it is not limited thereto.

In other embodiments of the present disclosure, the straight portion <NUM>-<NUM> extends in the -Z-axis from the bent portion <NUM>-<NUM>. Therefore, when viewed in the direction perpendicular to the main axis <NUM>-AX (the Y-axis), the straight portion <NUM>-<NUM> is closer to the light-exiting end of the optical element driving mechanism <NUM>-<NUM> than the bent portion <NUM>-<NUM>.

As shown in <FIG>, the straight portion <NUM>-<NUM> has a first surface <NUM>-SF1 parallel to the main axis <NUM>-AX and a second surface <NUM>-SF2 perpendicular to the main axis <NUM>-AX, and the first surface <NUM>-SF1 is made of a different material than the second surface <NUM>-SF2.

As shown in <FIG>, the circuit assembly <NUM>-<NUM> may include a plurality of electrical connection portions <NUM>-<NUM>, the electrical connection portion <NUM>-<NUM> is configured to be electrically connected to the corresponding straight portion <NUM>-<NUM> and/or the bent portion <NUM>-<NUM>. The electrical connection portion <NUM>-<NUM> can be a solder pad configured to be connected to the corresponding electrical connection terminal <NUM>-<NUM> by solder <NUM>-SD.

In this embodiment, the electrical connection terminals <NUM>-<NUM> protrude from the circuit assembly <NUM>-<NUM>, and when viewed along the main axis <NUM>-AX, the electrical connection portion <NUM>-<NUM> overlaps at least one portion of the second surface <NUM>-SF2 of the corresponding straight portion <NUM>-<NUM>.

As shown in <FIG>, the optical element driving mechanism <NUM>-<NUM> may further include an adhesive element <NUM>-AE, and the adhesive element <NUM>-AE may be glue, which is disposed between the bent portion <NUM>-<NUM> and the electrical connection portion <NUM>-<NUM>. The adhesive element <NUM>-AE can completely cover and protect the electrical connection terminals <NUM>-<NUM> and the electrical connection portions <NUM>-<NUM>. The adhesive element <NUM>-AE and the solder <NUM>-SD may be collectively referred to as an adhesive assembly.

Furthermore, as shown in <FIG>, the circuit member <NUM>-<NUM> may further include a plurality of external electrical connection portions <NUM>-<NUM> configured to be electrically connected to an external circuit, and the external electrical connection portions <NUM>-<NUM> and the electrical connection terminals <NUM>-<NUM> extend in opposite directions. Specifically, the external electrical connection portion <NUM>-<NUM> extends in the - Z-axis, and the electrical connection terminal <NUM>-<NUM> extends in the +Z-axis.

As shown in <FIG> and <FIG>, when viewed along the main axis <NUM>-AX, the optical element driving mechanism <NUM>-<NUM> has a rectangular structure, and the electrical connection terminals <NUM>-<NUM> and the external electrical connection portions <NUM>-<NUM> are located on different sides of the optical element driving mechanism <NUM>-<NUM>.

In this embodiment, the first magnet <NUM>-MG11 and the second magnet <NUM>-MG12 may be referred to as driving magnetic elements, and when viewed along the main axis <NUM>-AX, the second magnet <NUM>-MG12 and the external electrical connection portions <NUM>-<NUM> are located on the same side of the optical element driving mechanism <NUM>-<NUM>.

Please refer to <FIG>, which is a partial structural diagram of the optical element driving mechanism <NUM>-<NUM> according to an embodiment of the present disclosure. When viewed along a direction (such as the Y-axis) perpendicular to the main axis <NUM>-AX, the straight portion <NUM>-<NUM> further has a third surface <NUM>-SF3 and a fourth surface <NUM>-SF4, and both the third surface <NUM>-SF3 and the fourth surface <NUM>-SF4 are parallel to the main axis <NUM>-AX (the Z-axis). The electrical connection portion <NUM>-<NUM> may have a U-shaped structure, and the third surface <NUM>-SF3 and the fourth surface <NUM>-SF4 both correspond to the electrical connection portion <NUM>-<NUM>.

Please refer to <FIG>, which is a partial structural diagram of the optical element driving mechanism <NUM>-<NUM> according to an embodiment of the present disclosure. In this embodiment, when viewed in a direction perpendicular to the main axis <NUM>-AX (for example, the Y-axis), the electrical connection portion <NUM>-<NUM> may have an L-shape structure, and only one of the third surface <NUM>-SF3 or the fourth surface <NUM>-SF4 corresponds to the electrical connection portion <NUM>-<NUM>.

Please refer to <FIG>, which is a cross-sectional view of the optical element driving mechanism <NUM>-<NUM> along the line <NUM>-B-<NUM>-B' in <FIG> according to an embodiment of the present disclosure. In this embodiment, the lens holder <NUM>-<NUM> has a first convex portion <NUM>-<NUM> and a second convex portion <NUM>-<NUM>, the first convex portion <NUM>-<NUM> extends in a direction perpendicular to the main axis <NUM>-AX (such as the Y-axis), the second convex portion <NUM>-<NUM> extends along the main axis <NUM>-AX, and a first convex surface <NUM>-<NUM> of the first convex portion <NUM>-<NUM> faces a second convex surface <NUM>-<NUM> of the second convex portion <NUM>-<NUM>.

In addition, the first coil <NUM>-CL11 (or the second coil <NUM>-CL12) is formed by a wire <NUM>-WL, and at least a part of the wire <NUM>-WL is disposed between the first convex surface <NUM>-<NUM> and the second convex surface <NUM>-<NUM>.

Please refer to <FIG>, which is a top view of the optical element driving mechanism <NUM>-<NUM> after removing the casing <NUM>-<NUM> according to an embodiment of the present disclosure. In this embodiment, the lens holder <NUM>-<NUM> may include a plurality of recesses <NUM>-<NUM> formed facing the base <NUM>-<NUM>, and when viewed along the main axis <NUM>-AX, the first elastic element <NUM>-<NUM> partially overlaps the recesses <NUM>-<NUM>. Based on the configuration of the recesses <NUM>-<NUM>, the weight of the optical element driving mechanism <NUM>-<NUM> can be further reduced.

Please refer to <FIG>, which is a top view of a partial structure of the optical element driving mechanism <NUM>-<NUM> according to an embodiment of the present disclosure. In this embodiment, the casing <NUM>-<NUM> has a top wall <NUM>-102T that is perpendicular to the main axis <NUM>-AX, and when viewed along the main axis <NUM>-AX, the top wall <NUM>-102T completely overlaps the recess <NUM>-<NUM>.

The present disclosure provides an optical element driving mechanism <NUM>-<NUM> having a circuit assembly <NUM>-<NUM> and the circuit member <NUM>-<NUM>, and the circuit member <NUM>-<NUM> has a plurality of electrical connection terminals <NUM>-<NUM>, corresponding to the plurality of electrical connection portions <NUM>-<NUM> of the circuit assembly <NUM>-<NUM>. The electrical connection terminal <NUM>-<NUM> protrudes from the base <NUM>-<NUM>. The electrical connection terminal <NUM>-<NUM> may include a straight portion <NUM>-<NUM> and a bent portion <NUM>-<NUM>, and the straight portion <NUM>-<NUM> extends in the optical axis <NUM>-O from the bent portion <NUM>-<NUM>.

Furthermore, the electrical connection terminal <NUM>-<NUM> is electrically connected to the electrical connection portion <NUM>-<NUM> by the solder <NUM>-SD. Based on the design of the circuit member <NUM>-<NUM> of the present disclosure, the contact area between the solder <NUM>-SD and the electrical connection terminal <NUM>-<NUM> can be increased, thereby increasing the structural strength between the circuit member <NUM>-<NUM> and circuit assembly <NUM>-<NUM>.

The movable assembly <NUM>-MA may further include a first elastic member <NUM>-<NUM> and a second elastic member <NUM>-<NUM>. The outer portion (the outer ring portion) of the first elastic member <NUM>-<NUM> is fixed to the frame <NUM>-<NUM>, the outer portion (the outer ring portion) of the second elastic member <NUM>-<NUM> is fixed to the base <NUM>-<NUM>, and the inner portions (the inner ring portions) of the first elastic member <NUM>-<NUM> and the second elastic member <NUM>-<NUM> are respectively connected to the upper and lower sides of the lens holder <NUM>-<NUM>, so that the lens holder <NUM>-<NUM> can be suspended in the accommodating space <NUM>-<NUM>.

Furthermore, the optical element driving mechanism <NUM>-<NUM> of the present disclosure further includes a circuit member <NUM>-<NUM> configured to be electrically connected to the driving assembly <NUM>-DA. In this embodiment, the circuit member <NUM>-<NUM> is disposed inside the base <NUM>-<NUM>. For example, the base <NUM>-<NUM> is made of plastic material, and the circuit member <NUM>-<NUM> is formed in the base <NUM>-<NUM> by the molded interconnect device (MID) technology.

As shown in <FIG>, in this embodiment, the first coil <NUM>-CL11 and the second coil <NUM>-CL12 are disposed on the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA, and the first magnet <NUM>-MG11 (the first magnetic element) and the second magnet <NUM>-MG12 (the second magnetic element) are disposed on the inner wall surface of the casing <NUM>-<NUM> of the fixed assembly <NUM>-FA. However, in other embodiments, the positions of the aforementioned coils and magnets may be interchangeable.

Furthermore, it is worth noting that, as shown in <FIG>, a shortest distance <NUM>-DS1 between the first coil <NUM>-CL11 and the first magnet <NUM>-MG11 and a shortest distance <NUM>-DS2 between the second coil <NUM>-CL12 and the second magnets <NUM>-MG12 are the same.

Please refer to <FIG>, which is a cross-sectional view of the lens holder <NUM>-<NUM> and the first coil <NUM>-CL11 according to an embodiment of the present disclosure. As shown in <FIG>, the first coil <NUM>-CL11 is wound by a wire <NUM>-WL. The wire <NUM>-WL has a rectangular structure, and the rectangular structure has two first sides <NUM>-WLS1 and two second sides <NUM>-WLS2. In addition, the extending direction of the first side <NUM>-WLS1 is different from the extending direction of the second side <NUM>-WLS2. Specifically, the first side <NUM>-WLS1 extends along the Z-axis, and the second side <NUM>-WLS2 extends along the X-axis.

The length of the first side <NUM>-WLS1 is different from the length of the second side <NUM>-WLS2. Specifically, the length of the first side <NUM>-WLS1 is greater than the length of the second side <NUM>-WLS2. In addition, a winding axis <NUM>-CLX of the first coil <NUM>-CL11 is not parallel to the optical axis <NUM>-O. For example, the winding axis <NUM>-CLX may be perpendicular to the optical axis <NUM>-O.

Furthermore, the first coil <NUM>-CL11 has a plurality of turns, the adjacent first sides <NUM>-WLS1 of the turn are close to each other, and the second side <NUM>-WLS2 of each turn is located on a plane <NUM>-RP. Specifically, those turns are aligned with each other.

It should be noted that only the configuration of the first coil <NUM>-CL11 is shown in <FIG>, and the configuration of the second coil <NUM>-CL12 may also be the same as that of the first coil <NUM>-CL11.

Please refer to <FIG>, which is a cross-sectional view of the lens holder <NUM>-<NUM> and the first coil <NUM>-CL1 <NUM> according to another embodiment of the present disclosure. In this embodiment, the winding axis <NUM>-CLX of the first coil <NUM>-CL11 is perpendicular to the optical axis <NUM>-O, and the wire <NUM>-WL of the first coil <NUM>-CL11 is stacked along the Z-axis. That is, the adjacent first sides <NUM>-WLS1 of each turn are close to each other and are arranged in a stack along the Z-axis.

Please refer to <FIG>, which is a partial structural diagram of the lens holder <NUM>-<NUM> and the first coil <NUM>-CL11 according to another embodiment of the present disclosure. As shown in <FIG>, the wire <NUM>-WL of the first coil <NUM>-CL11 has a leading end <NUM>-WL1, the lens holder <NUM>-<NUM> has a fixing element <NUM>-<NUM>, and the fixing element <NUM>-<NUM> has a contact surface <NUM>-<NUM>. The leading end <NUM>-WL1 is configured to be fixedly connected to the contact surface <NUM>-<NUM> (for example, by glue), and the contact surface <NUM>-<NUM> is parallel to the optical axis <NUM>-O.

Please refer to <FIG>, which is a partial structural diagram of the lens holder <NUM>-<NUM> and the first coil <NUM>-CL11 according to the claimed subject-matter. Similar to the previous embodiment, the lens holder <NUM>-<NUM> has the fixing element <NUM>-<NUM>, the fixing element <NUM>-<NUM> has another contact surface <NUM>-<NUM>, the leading end <NUM>-WL1 is configured to be connected to the contact surface <NUM>-<NUM>, and the contact surface <NUM>-<NUM> is perpendicular to the optical axis <NUM>-O.

Please refer to <FIG>, which is a cross-sectional view of the lens holder <NUM>-<NUM> and the first coil <NUM>-CL1 <NUM> according to another embodiment of the present disclosure. As shown in <FIG>, at least one positioning assembly <NUM>-<NUM> can be disposed on the lens holder <NUM>-<NUM>, and the first coil <NUM>-CL11 is affixed to the positioning assembly <NUM>-<NUM>. In this embodiment, the positioning assembly <NUM>-<NUM> includes a first projection <NUM>-<NUM>, which extends along the winding axis <NUM>-CLX. The positioning assembly <NUM>-<NUM> may further include a second projection <NUM>-<NUM>, extending in a direction that is not parallel to the winding axis <NUM>-CLX, for example, along the Z-axis. Specifically, the second projection <NUM>-<NUM> protrudes from the first projection <NUM>-<NUM>.

The positioning assembly <NUM>-<NUM> further has a groove <NUM>-108C formed by the first projection <NUM>-<NUM> and the second projection <NUM>-<NUM>. A part of the first coil <NUM>-CL11 is located in the groove <NUM>-108C. The first coil <NUM>-CL11 further includes a first layer <NUM>-LY1 and a second layer <NUM>-LY2. The first layer <NUM>-LY1 is closer to the winding axis <NUM>-CLX than the second layer <NUM>-LY2, and the first layer <NUM>-LY1 is located in the groove <NUM>-108C. Based on the structural configuration of this embodiment, the first coil <NUM>-CL11 can be more accurately positioned on the positioning assembly <NUM>-<NUM>.

Please refer to <FIG>, which is a cross-sectional view of the lens holder <NUM>-<NUM> and the first coil <NUM>-CL1 <NUM> according to another embodiment of the present disclosure. This embodiment is similar to the previous embodiment. In this embodiment, the positioning assembly <NUM>-<NUM> may further include a third projection <NUM>-<NUM>, extending in a direction that is not parallel to the winding axis <NUM>-CLX, and the first projection <NUM>-<NUM> and the third projection <NUM>-<NUM> project out in different directions. In addition, the second projection <NUM>-<NUM> is symmetrical to the third projection <NUM>-<NUM>. Based on the structural configuration of this embodiment, the first coil <NUM>-CL11 can be positioned on the positioning assembly <NUM>-<NUM> more stably.

Please refer to <FIG>, which is a cross-sectional view of the lens holder <NUM>-<NUM>, the first coil <NUM>-CL11, and the first magnet <NUM>-MG11 according to another embodiment of the present disclosure. The lens holder <NUM>-<NUM> may further include an inner groove <NUM>-108IC, the first coil <NUM>-CL11 is disposed in the inner groove <NUM>-108IC, and the total cross-sectional area of the first coil <NUM>-CL1 <NUM> is at least <NUM>% of the cross-sectional area of the inner groove <NUM>-108IC. It is worth noting that in other embodiments, the inner groove <NUM>-108IC and the first coil <NUM>-CL11 may also be disposed at the fixed assembly <NUM>-FA.

Similar to the previous embodiment, the first coil <NUM>-CL11 is wound by the wire <NUM>-WL. The wire <NUM>-WL has a rectangular structure, the rectangular structure has two first sides <NUM>-WLS1 and two second sides <NUM>-WLS2, and the extending direction of the first side <NUM>-WLS1 is different from the extending direction of the second side <NUM>-WLS2. Furthermore, the first coil <NUM>-CL11 has a plurality of turns, the first sides <NUM>-WLS1 of the turns are close to each other, and the second sides <NUM>-WLS2 of the turns are close to each other.

In this embodiment, the length of the first side <NUM>-WLS1 is greater than the length of the second side <NUM>-WLS2, and the first side <NUM>-WLS1 of the outermost wire <NUM>-WL faces the first magnet <NUM>-MG11 (the first magnetic element). The first magnet <NUM>-MG11 has a first length <NUM>-L1, the first coil <NUM>-CL11 has a second length <NUM>-L2, the first length <NUM>-L1 and the second length <NUM>-L2 extend in the same direction (for example, in the optical axis <NUM>-O), and the first length <NUM>-L1 is greater than the second length <NUM>-L2.

Based on the structural configuration of this embodiment, the size of the optical element driving mechanism <NUM>-<NUM> on the XY plane can be further reduced, thereby achieving the purpose of miniaturization.

Please refer to <FIG>, which is a schematic cross-sectional view of the lens holder <NUM>-<NUM>, the first coil <NUM>-CL11, and the first magnet <NUM>-MG11 according to another embodiment of the present disclosure. This embodiment is similar to the previous embodiment. In this embodiment, the length of the first side <NUM>-WLS1 of the wire <NUM>-WL is greater than the length of the second side <NUM>-WLS2, and the outermost second side <NUM>-WLS2 faces the first magnet <NUM>-MG11.

Based on the structural configuration of this embodiment, the height of the optical element driving mechanism <NUM>-<NUM> on the Z-axis can be further reduced, thereby achieving the purpose of miniaturization.

The present disclosure provides an optical element driving mechanism <NUM>-<NUM> having the lens holder <NUM>-<NUM>, the first coil <NUM>-CL11 and the second coil <NUM>-CL12, and the first coil <NUM>-CL11 and the second coil <NUM>-CL12 are respectively disposed on the two positioning assemblies <NUM>-<NUM> of the lens holder <NUM>-<NUM> by resistance welding or conductive glue, for example. The first coil <NUM>-CL11 (and/or the second coil <NUM>-CL12) may be a flat wire coil, and the cross section of the wire <NUM>-WL of the first coil <NUM>-CL11 may be rectangular.

Compared with a conventional round wire, the area occupied by the flat wire coil of the present disclosure can be reduced so that the size of the lens holder <NUM>-<NUM> can be reduced further to achieve the purpose of miniaturization. In addition, a flat wire coil achieves better driving efficiency than a round wire coil with the same number of turns.

In this embodiment, as shown in <FIG>, the fixed assembly <NUM>-FA includes a casing <NUM>-<NUM>, a frame <NUM>-<NUM> and a base <NUM>-<NUM>. The movable assembly <NUM>-MA includes a lens holder <NUM>-<NUM> and the aforementioned optical element, and the lens holder <NUM>-<NUM> is configured to hold the optical element. A main axis <NUM>-AX can be defined by the fixed assembly <NUM>-FA, and an optical axis <NUM>-O can be defined by the optical element. The main axis <NUM>-AX may, for example, overlap the optical axis <NUM>-O, but it is not limited thereto.

Furthermore, the casing <NUM>-<NUM> is disposed on the base <NUM>-<NUM> and may have an accommodating space <NUM>-<NUM> is configured to accommodate the movable assembly <NUM>-MA (including the aforementioned optical element and the lens holder <NUM>-<NUM>) and the driving assembly <NUM>-DA. The frame <NUM>-<NUM> is fixed to the casing <NUM>-<NUM> and disposed in the accommodating space <NUM>-<NUM>.

The movable assembly <NUM>-MA may further include a first elastic member <NUM>-<NUM> and a second elastic member <NUM>-<NUM>. The outer portion (the outer ring portion) of the first elastic member <NUM>-<NUM> is fixed to the frame <NUM>-<NUM>, the outer portion (the outer ring portion) of the second elastic member <NUM>-<NUM> is fixed to the base <NUM>-<NUM>, and the inner portions (the inner ring portions) of the first elastic member <NUM>-<NUM> and the second elastic member <NUM>-<NUM> are respectively connected to the upper and lower sides of the lens holder <NUM>-<NUM>, so that the lens holder <NUM>-<NUM> can be suspended in the accommodating space <NUM>-<NUM>. That is, the movable assembly <NUM>-MA is movably connected to the fixed assembly <NUM>-FA via the first elastic member <NUM>-<NUM> and the second elastic member <NUM>-<NUM>.

In this embodiment, the driving assembly <NUM>-DA may include a first magnet <NUM>-M11, a second magnet <NUM>-M12, and a driving coil <NUM>-DCL. The driving coil <NUM>-DCL is disposed on the lens holder <NUM>-<NUM>, and the first magnet <NUM>-M11 and the second magnet <NUM>-M12 are disposed on the inner wall surface of the casing <NUM>-<NUM> and respectively corresponding to the driving coil <NUM>-DCL.

In this embodiment, the driving coil <NUM>-DCL may be wound coils and be disposed on the lens holder <NUM>-<NUM>, and a winding axis of the driving coil <NUM>-DCL may be parallel to the optical axis <NUM>-O. When the driving coil <NUM>-DCL is provided with electricity, the driving coil <NUM>-DCL acts with the first magnet <NUM>-M11 and the second magnet <NUM>-M12 to generate an electromagnetic force, so as to drive the lens holder <NUM>-<NUM> and the held optical element to move relative to the base <NUM>-<NUM> along the optical axis <NUM>-O (the Z-axis).

Please refer to <FIG>, which is a top view of a partial structure of the optical element driving mechanism <NUM>-<NUM> according to an embodiment of the present disclosure. When viewed along the main axis <NUM>-AX, the fixed assembly <NUM>-FA (such as the casing <NUM>-<NUM>) may include a first side <NUM>-<NUM>, a second side <NUM>-<NUM>, a third side <NUM>-<NUM>, and a fourth side <NUM>-<NUM>. The first side <NUM>-<NUM> extends in a first direction (the Y-axis), the second side <NUM>-<NUM> extends in a second direction (the X-axis), the first side <NUM>-<NUM> and the third side <NUM>-<NUM> are respectively located on opposite sides of the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA, and the second side <NUM>-<NUM> and the fourth side <NUM>-<NUM> are respectively located on opposite sides of the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA.

Furthermore, as shown in <FIG>, the driving coil <NUM>-DCL is wound on the lens holder <NUM>-<NUM>, and the winding axis of the driving coil <NUM>-DCL can be parallel (or overlapping) to the main axis <NUM>-AX. The driving coil <NUM>-DCL includes a first segment <NUM>-SG1, a second segment <NUM>-SG2, a third segment <NUM>-SG3, and a fourth segment <NUM>-SG4. The first segment <NUM>-SG1 is parallel to the first side <NUM>-<NUM>, the second segment <NUM>-SG2 is not parallel to the first side <NUM>-<NUM> and the second side <NUM>-<NUM>, the third segment <NUM>-SG3 is not parallel to the first side <NUM>-<NUM> and the second side <NUM>-<NUM>, the second segment <NUM>-SG2 is connected to the third segment <NUM>-SG3 via the fourth segment <NUM>-SG4, and the fourth segment <NUM>-SG4 is parallel to the second side <NUM>-<NUM>.

The first magnet M11 (the magnetic element) corresponds to the first segment <NUM>-SG1, and the first magnet M11 has a long strip-shaped structure and extends in the first direction (the Y-axis). It is worth noting that, as shown in <FIG>, the driving assembly <NUM>-DA does not have a magnetic element corresponding to the second segment <NUM>-SG2 and the third segment <NUM>-SG3, and the driving assembly <NUM>-DA does not have a magnetic element that corresponds to the fourth segment <NUM>-SG4, either.

Please refer to <FIG>, which is a cross-sectional view of the optical element driving mechanism <NUM>-<NUM> along the line <NUM>-B-<NUM>-B' in <FIG> according to an embodiment of the present disclosure. The lens holder <NUM>-<NUM> may further include a first stopping element <NUM>-<NUM> and a second stopping element <NUM>-<NUM>. When viewed along the main axis <NUM>-AX, the first stopping element <NUM>-<NUM> and the second stopping element <NUM>-<NUM> are located on the second side <NUM>-<NUM>.

As shown in <FIG>, in the main axis <NUM>-AX, a shortest distance between the first stopping element <NUM>-<NUM> and the second stopping element <NUM>-<NUM> is not zero. That is, their positions in the Z-axis are different. When viewed along the main axis <NUM>-AX, the first stopping element <NUM>-<NUM> overlaps at least a part of the second stopping element <NUM>-<NUM>. Furthermore, a shortest distance <NUM>-md1 between the first stopping element <NUM>-<NUM> and the casing <NUM>-<NUM> of the fixed assembly <NUM>-FA is different from a shortest distance <NUM>-md2 between the second stopping element <NUM>-<NUM> and the casing <NUM>-<NUM>.

The base <NUM>-<NUM> includes a bottom plate <NUM>-<NUM> and a base side wall <NUM>-<NUM>, and the base side wall <NUM>-<NUM> protrudes from the edge of the bottom plate <NUM>-<NUM> (<FIG>).

When viewed along the main axis <NUM>-AX, a casing side wall <NUM>-102W of the casing <NUM>-<NUM> is located on the second side <NUM>-<NUM> and corresponds to the base side wall <NUM>-<NUM>. When viewed in the first direction (the Y-axis), the first stopping element <NUM>-<NUM> overlaps at least a part of the casing side wall <NUM>-102W.

The first stopping element <NUM>-<NUM>, the second stopping element <NUM>-<NUM>, the casing side wall <NUM>-102W, and the base side wall <NUM>-<NUM> may be referred to as a stopping assembly, configured to limit the movement of the movable assembly <NUM>-MA relative to the fixed assembly <NUM>-FA within a range of motion. In addition, as shown in <FIG>, the shortest distance <NUM>-md1 between the first stopping element <NUM>-<NUM> and the casing side wall <NUM>-102W is substantially equal a shortest distance <NUM>-md3 between the second stopping element <NUM>-<NUM> and the base side wall <NUM>-<NUM>.

Please refer to <FIG>, which is a partial structural diagram of the lens holder <NUM>-<NUM> and the driving coil <NUM>-DCL according to an embodiment of the present disclosure. The lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA may include two electrical connection portions <NUM>-108P (only one is shown in <FIG>), the driving coil <NUM>-DCL is formed by a leading wire <NUM>-WL, and a part of the leading wire <NUM>-WL is disposed on the electrical connection portions <NUM>-108P. Specifically, an initial end of the leading wire <NUM>-WL is disposed on one of the electrical connection portions <NUM>-108P, and a finished end of the leading wire <NUM>-WL is disposed on the other electrical connection portion <NUM>-108P.

The lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA further includes a fixed surface <NUM>-108S1 and a receiving portion <NUM>-108R. The fixed surface <NUM>-108S1 faces the driving coil <NUM>-DCL and is directly in contact with the driving coil <NUM>-DCL. The receiving portion <NUM>-108R is located on the fixed surface <NUM>-108S1 and is formed from the fixed surface <NUM>-108S1. The receiving portion <NUM>-108R is configured to receive at least a part of the leading wire <NUM>-WL, and the receiving portion <NUM>-108R corresponds to the electrical connection portion <NUM>-108P.

The optical element driving mechanism <NUM>-<NUM> may further include a first adhesive element <NUM>-AD. The first adhesive element <NUM>-AD may be, for example, glue, and the first adhesive element <NUM>-AD is disposed in the receiving portion <NUM>-108R. The first adhesive element <NUM>-AD can directly contact the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA, the leading wire <NUM>-WL, the driving coil <NUM>-DCL, and the second segment <NUM>-SG2. In some embodiments of the present disclosure, the receiving portion <NUM>-108R may be a concave structure or an opening structure.

The lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA further includes a support surface <NUM>-108S2, which is not parallel to the fixed surface <NUM>-108S1. The support surface <NUM>-108S2 directly contacts the driving coil <NUM>-DCL. Specifically, the support surface <NUM>-108S2 directly contacts the second segment <NUM>-SG2. As shown in <FIG>, the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA further includes a guiding structure <NUM>-<NUM>, which is disposed on the support surface <NUM>-108S2. At least a part of the first adhesive element <NUM>-AD is located in the guiding structure <NUM>-<NUM>. In this embodiment, the guiding structure <NUM>-<NUM> is adjacent to the receiving portion <NUM>-108R. In some embodiments of the present disclosure, the guiding structure <NUM>-<NUM> may be a concave structure or an opening structure.

Please refer to <FIG> and <FIG> is a partial structural diagram of the lens holder <NUM>-<NUM> and the driving coil <NUM>-DCL in another view according to an embodiment of the present disclosure. The lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA further includes a skirt portion <NUM>-<NUM>, and a portion of the fixed surface <NUM>-108S1 is located at the skirt portion <NUM>-<NUM>. In this embodiment, the skirt portion <NUM>-<NUM> extends in a direction that is not parallel to the winding axis (the Z-axis) of the driving coil <NUM>-DCL. Furthermore, as shown in <FIG>, the skirt portion <NUM>-<NUM> has a tapered structure, tapered in a direction <NUM>-DR, and the direction <NUM>-DR is not parallel to the winding axis (the Z-axis).

Please refer to <FIG> and <FIG> is a front view of the optical element driving mechanism <NUM>-<NUM> after removing the casing <NUM>-<NUM> according to an embodiment of the present disclosure. In this embodiment, when viewed along the main axis <NUM>-AX, the base side wall <NUM>-<NUM> is located on the second side <NUM>-<NUM>, and the electrical connection portion <NUM>-108P is located on the second side <NUM>-<NUM>.

Furthermore, as shown in <FIG>, when viewed in the first direction (the Y-axis), the base side wall <NUM>-<NUM> overlaps at least a portion of the third segment <NUM>-SG3, the base side wall <NUM>-<NUM> overlaps at least a portion of the second segment <NUM>-SG2, the base side wall <NUM>-<NUM> overlaps at least a portion of the fourth segment <NUM>-SG4, the base side wall <NUM>-<NUM> does not overlap the electrical connection portion <NUM>-108P, and the base side wall <NUM> -<NUM> overlaps at least a portion of the second stopping element <NUM>-<NUM>.

In this embodiment, the base <NUM>-<NUM> of the fixed assembly <NUM>-FA further includes an adhesive strengthening structure <NUM>-<NUM>, which is disposed on the base side wall <NUM>-<NUM>. In other embodiments, the adhesive strengthening structure <NUM>-<NUM> can also be disposed on the casing side wall <NUM>-102W. The adhesive strengthening structure <NUM>-<NUM> may be a plurality of trenches, and these trenches are parallel to each other.

Please refer to <FIG>, which is a cross-sectional view of the optical element driving mechanism <NUM>-<NUM> along the line <NUM>-C-<NUM>-C' in <FIG> according to an embodiment of the present disclosure. In <FIG>, when the lens holder <NUM>-<NUM> of the movable assembly <NUM>-MA moves toward the second side <NUM>-<NUM> to a limit position, the first stopping element <NUM>-<NUM> is in contact with the casing side wall <NUM>-102W, and the second stopping element <NUM>-<NUM> is in contact with the base side wall <NUM>-<NUM>. When viewed in the second direction (the X-axis), the base side wall <NUM>-<NUM> overlaps at least a part of the electrical connection portion <NUM>-108P.

Please refer to <FIG>, which is a top view of the first elastic member <NUM>-<NUM> and the second elastic member <NUM>-<NUM> according to an embodiment of the present disclosure. The first elastic member <NUM>-<NUM> includes a first fixed part <NUM>-<NUM>, a first movable part <NUM>-<NUM>, and a first elastic portion <NUM>-<NUM>. The first fixed part <NUM>-<NUM> is configured to be fixed to the fixed assembly <NUM>-FA (such as the frame <NUM>-<NUM>), the first movable part <NUM>-<NUM> is configured to be fixed to the movable assembly <NUM>-MA (such as lens holder <NUM>-<NUM>), and the first movable part <NUM>-<NUM> is movably connected to the first fixed part <NUM>-<NUM> via the first elastic portion <NUM>-<NUM>.

The first elastic portion <NUM>-<NUM> intersects the first fixed part <NUM>-<NUM> at a first intersection <NUM>-<NUM>, and the first elastic portion <NUM>-<NUM> intersects the first movable part <NUM>-<NUM> at a second intersection <NUM>-<NUM>, the second intersection <NUM>-<NUM> and the first intersection <NUM>-<NUM> are arranged in sequence in a third direction <NUM>-DR3.

Furthermore, the second elastic member <NUM>-<NUM> includes a second fixed part <NUM>-<NUM>, a second movable part <NUM>-<NUM>, and a second elastic portion <NUM>-<NUM>. The second fixed part <NUM>-<NUM> is configured to be fixed to the fixed assembly <NUM>-FA (such the base <NUM>-<NUM>), the second movable part <NUM>-<NUM> is configured to be fixed to the movable assembly <NUM>-MA (such as the lens holder <NUM>-<NUM>), and the second movable part <NUM>-<NUM> is movably connected to the second fixed part <NUM>-<NUM> via the second elastic portion <NUM>-<NUM>.

The second elastic portion <NUM>-<NUM> intersects the second fixed part <NUM>-<NUM> at a third intersection <NUM>-<NUM>, the second elastic portion <NUM>-<NUM> intersects the second movable part <NUM>-<NUM> at a fourth intersection <NUM>-<NUM>, and the fourth intersection <NUM>-<NUM> and the third intersection <NUM>-<NUM> are arranged in sequence in a fourth direction <NUM>-DR4.

It is worth noting that an angle <NUM>-AG between the third direction <NUM>-DR3 and the fourth direction <NUM>-DR4 is less than or equal to <NUM> degrees. In some embodiments of the present disclosure, when viewed along the main axis <NUM>-AX, the first elastic portion <NUM>-<NUM> overlaps at least a portion of the second elastic portion <NUM>-<NUM>. That is, the first elastic portion <NUM>-<NUM> and the second elastic portion <NUM>-<NUM> are disposed at the same corner.

The present disclosure provides an optical element driving mechanism <NUM>-<NUM>, which has a miniaturized lens holder <NUM>-<NUM> capable of holding a larger lens, and a portion of each side of the lens holder <NUM>-<NUM> is reduced toward the inside so as to receive the leading wire <NUM>-WL with a large diameter. Therefore, the design of the optical element driving mechanism <NUM>-<NUM> of the present disclosure can achieve the advantages of miniaturization, holding a larger lens, and high driving efficiency at the same time.

Furthermore, at least one base side wall <NUM>-<NUM> is disposed on the base <NUM>-<NUM> of the present disclosure, and a plurality of adhesive strengthening structures <NUM>-<NUM> are disposed on the base side wall <NUM>-<NUM> to increase the adhesive strength between the base side wall <NUM>-<NUM> and the casing side wall <NUM>-102W. In addition, the electrical connection portion <NUM>-108P of the lens holder <NUM>-<NUM> can serve as a bobbin of the driving coil <NUM>-DCL, and the electrical connection portion <NUM>-108P is staggered from the base side wall <NUM>-<NUM>, so that when the lens holder <NUM>-<NUM> moves, the electrical connection portion <NUM>-108P does not collide with the base side wall <NUM>-<NUM> and cause damage.

Referring to <FIG>, in an embodiment of the invention, an optical member driving mechanism <NUM>-<NUM> can be disposed in an electronic device <NUM>-<NUM> and used to hold and drive an optical member <NUM>-<NUM>, so that the optical member <NUM>-<NUM> can move relative to an image sensor (not shown) in the electronic device <NUM>-<NUM>, and the purpose of focus adjustment can be achieved. For example, the electronic device <NUM>-<NUM> can be a digital camera or a smartphone having the function of capturing photographs or recording video, and the optical member <NUM>-<NUM> can be a lens.

<FIG> is a schematic diagram of the optical member driving mechanism <NUM>-<NUM> according to an embodiment of the invention, and <FIG> is an exploded-view diagram of the aforementioned optical member driving mechanism <NUM>-<NUM>. As shown in <FIG> and <FIG>, the optical member driving mechanism <NUM>-<NUM> primarily comprises a fixed portion <NUM>-<NUM>, a movable portion <NUM>-<NUM>, a driving assembly <NUM>-<NUM>, two metal connecting members <NUM>-<NUM> and <NUM>-<NUM>, a circuit board <NUM>-<NUM>, and a position detecting module <NUM>-<NUM>.

The fixed portion <NUM>-<NUM> includes a frame <NUM>-<NUM> and a base <NUM>-<NUM>. The frame <NUM>-<NUM> has an optical hole <NUM>-<NUM>, and the base <NUM>-<NUM> has an optical hole <NUM>-<NUM>. The frame <NUM>-<NUM> and the base <NUM>-<NUM> can be assembled to form a hollow box by latching or adhering. When the optical member driving mechanism <NUM>-<NUM> is assembled, the movable portion <NUM>-<NUM>, the driving assembly <NUM>-<NUM>, the metal connecting members <NUM>-<NUM> and <NUM>-<NUM>, the circuit board <NUM>-<NUM>, and the position detecting module <NUM>-<NUM> can be accommodated in the hollow box, and the optical hole <NUM>-<NUM> corresponds to the optical hole <NUM>-<NUM>.

The movable portion <NUM>-<NUM> includes a carrier <NUM>-<NUM> having an accommodating hole <NUM>-<NUM> and at least one winding pillar <NUM>-<NUM>. The accommodating hole <NUM>-<NUM> is formed on the center of the carrier <NUM>-<NUM>, and the position of the accommodating hole <NUM>-<NUM> is corresponded to that of the optical hole <NUM>-<NUM> in the frame <NUM>-<NUM> and the optical hole <NUM>-<NUM> in the base <NUM>-<NUM>. Therefore, an external light can pass through the optical hole <NUM>-<NUM>, the optical member <NUM>-<NUM>, and the optical hole <NUM>-<NUM> in sequence, and then form an image on the image sensor in the electronic device <NUM>-<NUM>. The winding pillar <NUM>-<NUM> is formed on an outer wall <NUM>-<NUM> of the carrier <NUM>-<NUM>, and protrudes from the outer wall <NUM>-<NUM>. For example, the winding pillar <NUM>-<NUM> can include a L-shaped structure or a T-shaped structure.

The driving assembly <NUM>-<NUM> includes at least one first electromagnetic driving member <NUM>-<NUM> and at least one second electromagnetic driving member <NUM>-<NUM>. The first electromagnetic driving member <NUM>-<NUM> and the second electromagnetic driving member <NUM>-<NUM> are corresponded to each other, and affixed to the carrier <NUM>-<NUM> and the fixed portion <NUM>-<NUM> respectively. In this embodiment, the first electromagnetic driving member <NUM>-<NUM> is a coil, and the second electromagnetic driving member <NUM>-<NUM> is a magnetic member (such as a magnet). The electromagnetic effect between the first electromagnetic driving member <NUM>-<NUM> and the second electromagnetic driving member <NUM>-<NUM> can drive the carrier <NUM>-<NUM> and the optical member <NUM>-<NUM> disposed thereon to move relative to the fixed portion <NUM>-<NUM> along the Z-axis.

Specifically, when a current flows through the coil (the first electromagnetic driving member <NUM>-<NUM>), an electromagnetic driving force is generated between the first electromagnetic driving member <NUM>-<NUM> and the second electromagnetic driving member <NUM>-<NUM>. This electromagnetic force can push the carrier <NUM>-<NUM> to move along the Z-axis. Since the carrier <NUM>-<NUM> can move relative to the image sensor in the electronic device <NUM>-<NUM> along the Z-axis, the purpose of focus adjustment can be achieved.

The first electromagnetic driving member <NUM>-<NUM> in this embodiment can be consisted by a lead winding around the carrier <NUM>-<NUM>. Referring to <FIG>, in detail, the lead includes a conductive portion <NUM>-<NUM> and an insulating portion <NUM>-<NUM>. The conductive portion <NUM> is a continuous longitudinal conductor, and the insulating portion <NUM>-<NUM> is an insulating material surrounding the conductive portion <NUM>-<NUM>. Moreover, at an end of the lead of the first electromagnetic driving member <NUM>-<NUM>, a section that the conductive portion <NUM>-<NUM> is exposed and not covered by the insulating portion <NUM>-<NUM> is formed (as shown in <FIG>), and this section can wind around the winding pillar <NUM>-<NUM> of the carrier <NUM>-<NUM> (as shown in <FIG>).

Referring to <FIG>, the metal connecting members <NUM>-<NUM> and <NUM>-<NUM> are respectively disposed on the opposite sides of the carrier <NUM>-<NUM>. For example, the metal connecting member <NUM>-<NUM> is a sheet spring having a plate structure, including an inner section <NUM>-<NUM>, an outer section <NUM>-<NUM>, and at least one string section <NUM>-<NUM>. The inner section <NUM>-<NUM> is affixed to the carrier <NUM>-<NUM>. The outer section <NUM>-<NUM> is affixed to the fixed portion <NUM>-<NUM> (the frame <NUM>-<NUM> or the base <NUM>-<NUM>). The string section <NUM>-<NUM> is disposed between the inner section <NUM>-<NUM> and the outer section <NUM>-<NUM>, and connected thereto.

Similarly, the metal connecting member <NUM>-<NUM> can be a sheet spring having a plate structure, including an inner section <NUM>-<NUM>, an outer section <NUM>-<NUM>, and at least one string section <NUM>-<NUM>. The inner section <NUM>-<NUM> is affixed to the carrier <NUM>-<NUM>. The outer section <NUM>-<NUM> is affixed to the fixed portion <NUM>-<NUM> (the frame <NUM>-<NUM> or the base <NUM>-<NUM>). The string section <NUM>-<NUM> is disposed between the inner section <NUM>-<NUM> and the outer section <NUM>-<NUM>, and connected thereto. Therefore, the carrier <NUM>-<NUM> can be hung in the hollow box of the fixed portion <NUM>-<NUM> by the metal connecting members <NUM>-<NUM> and <NUM>-<NUM>.

As shown in <FIG>, the inner section <NUM>-<NUM> of the metal connecting member <NUM>-<NUM> can be affixed to the carrier <NUM>-<NUM> by an adhesive member <NUM>-<NUM> (such as a glue, and can include resin material). The inner section <NUM>-<NUM> further includes a protrusion <NUM>-<NUM> extending toward the outer section <NUM>-<NUM>, and the position of the protrusion <NUM>-<NUM> corresponds to that of the winding pillar <NUM>-<NUM> of the carrier <NUM>-<NUM>. As seen from the Z-axis, the overlapping area between the carrier <NUM>-<NUM> and the lead winding around the winding pillar <NUM>-<NUM> is called the winding region, the overlapping area between the metal connecting member <NUM>-<NUM> and the winding region is called the overlap region (it is substantially the same as the cross-sectional area of the protrusion <NUM>-<NUM>), and the area of the winding region which does not overlap the metal connecting member <NUM>-<NUM> is called the non-overlap region. In this embodiment, the area of the overlap region that is projected onto the carrier <NUM>-<NUM> is less than the area of the non-overlap region that is projected onto the carrier <NUM>-<NUM>.

Referring to <FIG>, the user can use an electrical connecting assembly <NUM>-<NUM> to electrically connect the metal connecting member <NUM>-<NUM> to the first electromagnetic driving member <NUM>-<NUM>.

The electrical connecting assembly <NUM>-<NUM> is disposed on the winding pillar <NUM>-<NUM> of the carrier <NUM>-<NUM>, and includes a metal portion <NUM>-<NUM> and a non-metallic portion <NUM>-<NUM>. For example, the metal portion <NUM>-<NUM> can include solder, conductive glue, copper slurry, or other suitable conductive material. The metal portion <NUM>-<NUM> covers and is in contact with the protrusion <NUM>-<NUM> of the metal connecting member <NUM>-<NUM>, and covers and is in contact with at least a portion of the conductive portion <NUM>-<NUM>. Therefore, the first electromagnetic driving member <NUM> and the metal connecting member <NUM>-<NUM> can be electrically connected to each other through the electrical connecting assembly <NUM>-<NUM>. For example, the non-metallic portion <NUM>-<NUM> can include resin, rubber, or other suitable nonconductive material. The non-metallic portion <NUM>-<NUM> covers the metal portion <NUM>-<NUM>, so as to restrict the range of the metal portion <NUM>-<NUM>. In this embodiment, a gap <NUM>-<NUM> is formed between the metal portion <NUM>-<NUM> and the non-metallic portion <NUM>-<NUM>, so as to confirm that a sufficient extension area can be provided to the metal portion <NUM>-<NUM> during the manufacturing process.

When the electrical connecting assembly <NUM>-<NUM> is disposed, the uncured metal portion <NUM>-<NUM> can be firstly disposed on the winding pillar <NUM>-<NUM> and contact the protrusion <NUM>-<NUM> and the conductive portion <NUM>-<NUM>. Subsequently, the non-metallic portion <NUM>-<NUM> can be coated on the metal portion <NUM>-<NUM>. In this embodiment, the non-metallic portion <NUM>-<NUM> is a double-curing glue, which can be cured by light and heat. Thus, the user can irradiate the non-metallic portion <NUM>-<NUM> by light (such as a UV light) after coating, so as to fix the appearance of the non-metallic portion <NUM>-<NUM>.

Next, a heat can be applied to the electrical connecting assembly <NUM>-<NUM> to melt the metal portion <NUM>-<NUM>, and the connecting area between the metal portion <NUM>-<NUM> and the protrusion <NUM>-<NUM> and the connecting area between the metal portion <NUM>-<NUM> and the conductive portion <NUM>-<NUM> can be increased. The cured non-metallic portion <NUM>-<NUM> can restrict the extension area of the metal portion <NUM>-<NUM>, so that short-circuits caused by the metal portion <NUM>-<NUM> making contact with the other components in the optical member driving mechanism <NUM>-<NUM> or the electronic device <NUM>-<NUM> can be prevented. After the metal portion <NUM>-<NUM> is cured, the electrical connecting assembly <NUM>-<NUM> shown in <FIG> can be formed.

It should be noted that, the non-metallic portion <NUM>-<NUM> can include a material with high viscosity to restrict the appearance of the electrical connecting assembly <NUM>-<NUM>. For example, the non-metallic portion <NUM>-<NUM> can include a dual-curing glue with viscosity range in 10000cps - 20000cps. Furthermore, the melting point of the non-metal portion <NUM>-<NUM> is greater than that of the metal portion <NUM>-<NUM>, so as to prevent the non-metallic portion <NUM>-<NUM> from melting when the heating the electrical connecting assembly <NUM>-<NUM>.

In some embodiments, the user can heat the electrical connecting assembly <NUM>-<NUM> after the non-metallic portion <NUM>-<NUM> is coated, and the metal portion <NUM>-<NUM> and the non-metallic portion <NUM>-<NUM> can be cured simultaneously. The manufacturing steps and the manufacturing time of the optical member driving mechanism <NUM>-<NUM> can be reduced.

In this embodiment, the non-metallic portion <NUM>-<NUM> can also contact the lead and the carrier <NUM>-<NUM>, and/or the lead and the adhesive member <NUM>-<NUM>. Therefore, the lead can be simultaneously affixed to the carrier <NUM>-<NUM> when curing. In some embodiments, a portion of the conductive portion <NUM>-<NUM> covered by the insulating portion <NUM>-<NUM> winds around the winding pillar <NUM>-<NUM>, so that the metal portion <NUM>-<NUM> of the electrical connecting assembly <NUM>-<NUM> can also contact the insulating portion <NUM>-<NUM> of the lead. The non-metallic portion <NUM>-<NUM> of the electrical connecting assembly <NUM>-<NUM> can contact the conductive portion <NUM>-<NUM> and the insulating portion <NUM>-<NUM>.

In this embodiment, the electrical connecting assembly <NUM>-<NUM> and the carrier <NUM>-<NUM> are arranged along the Z-axis (a first direction), and the connecting surface <NUM>-<NUM> of the metal connecting member <NUM>-<NUM> parallel to the Z-axis is in contact with the electrical connecting assembly <NUM>-<NUM>. The metal connecting member <NUM>-<NUM> having a plate structure is horizontally disposed relative to the carrier <NUM>-<NUM>, so that the direction of the thickness of the metal connecting member <NUM>-<NUM> is parallel to the Z-axis. In some embodiments, the metal connecting member <NUM>-<NUM> is perpendicularly disposed relative to the carrier <NUM>-<NUM>, so that the direction of the thickness of the metal connecting member <NUM>-<NUM> is perpendicular to the Z-axis.

Referring to <FIG>, the circuit board <NUM>-<NUM> is disposed on the frame <NUM>-<NUM> of the fixed portion <NUM>-<NUM>. The position detecting module <NUM>-<NUM> includes a sensor <NUM>-<NUM> and a sensing object <NUM>-<NUM>, respectively disposed on the circuit board <NUM>-<NUM> and the carrier <NUM>-<NUM>. The sensor <NUM>-<NUM> can determine the position of the movable portion <NUM>-<NUM> relative to the fixed portion <NUM> in the Z-axis by detecting the movement of the sensing object <NUM>-<NUM>.

For example, the sensor <NUM>-<NUM> can be a Hall sensor, a magnetoresistance effect sensor (MR sensor), a giant magnetoresistance effect sensor (GMR sensor), a tunneling magnetoresistance effect sensor (TMR sensor), an optical encoder, or an infrared sensor. When the sensor <NUM>-<NUM> uses the hall sensor, the magnetoresistance effect sensor, the giant magnetoresistance effect sensor, or the tunneling magnetoresistance effect sensor, the sensing object <NUM>-<NUM> can be a magnet. When the sensor <NUM>-<NUM> uses the optical encoder or the infrared sensor, the sensing object <NUM>-<NUM> can be a reflector.

In summary, an optical member driving mechanism is provided, including a movable portion, a fixed portion, a driving assembly, and an electrical connecting assembly. The movable portion is connected to an optical member, and is movable relative to the fixed portion. The driving assembly is configured to drive the movable portion to move relative to the fixed portion. The electrical connecting assembly is electrically connected to the driving assembly.

Referring to <FIG> and <FIG>, <FIG> is a schematic view showing the driving mechanism for an optical element <NUM>-<NUM>, and <FIG> is an exploded view of the driving mechanism <NUM>-<NUM>. The driving mechanism for an optical element <NUM>-<NUM> can be used, for example, to drive and sustain an optical element (such as a lens or a lens assembly having a plurality of lenses), and can be disposed inside an electronic device (such as a camera, a tablet or a mobile phone). When light (incident light) from the outside (at the light incident end <NUM>-LE) enters the driving mechanism for an optical element <NUM>-<NUM> along a light incident direction <NUM>-LT, the light can pass through an optical element (e.g. disposed on the movable part <NUM>-<NUM>) to an image sensor module (e.g. disposed on the fixed part <NUM>-<NUM>) to obtain an image. Through the driving mechanism <NUM>-<NUM>, the optical element and the image sensor can relatively move, thereby achieving optical zooming, auto-focus (AF) or optical image stabilization (OIS). The detailed structure of the aforementioned driving mechanism for an optical element <NUM>-<NUM> will be described below.

Referring to <FIG> and <FIG>, wherein <FIG> is a schematic diagram of the driving mechanism <NUM>-<NUM> omitting the housing <NUM>-<NUM>. The driving mechanism <NUM>-<NUM> comprises a fixed part <NUM>-<NUM>, a movable part <NUM>-<NUM> and a driving assembly <NUM>-MC. The fixed part <NUM>-<NUM> includes a housing <NUM>-<NUM> and a base <NUM>-<NUM> which are corresponding to each other, and they form an accommodating space for the movable part <NUM>-<NUM> and the driving assembly <NUM>-MC to be disposed therein, and provide protection. The movable part <NUM>-<NUM> is disposed on the base <NUM>-<NUM>, and includes a holder <NUM>-<NUM> which is configured to sustain the optical element. The drive assembly <NUM>-MC is disposed on the movable part <NUM>-<NUM> and the fixed part <NUM>-<NUM>, and is configured to drive the movable part <NUM>-<NUM> and the optical element to move relative to the fixed part <NUM>-<NUM>, thereby adjusting the posture or position of the movable part <NUM>-<NUM> with the optical element, so that the purposes of optical zooming, auto-focus, or optical image stabilization can be achieved.

Regarding the driving assembly <NUM>-MC, it may be an electromagnetic driving assembly, including a magnetic isolation element (or magnetic partition) <NUM>-B, a driving coil <NUM>-C and a driving magnetic element <NUM>-M.

Referring to <FIG>, the magnetic isolation element <NUM>-B is disposed on the inner surface <NUM>-<NUM> of the housing <NUM>-<NUM>. In some embodiments, the magnetic isolation element <NUM>-B is affixed to the inner surface <NUM>-<NUM>. The driving coil <NUM>-C and the driving magnetic element <NUM>-M are respectively disposed on the movable part <NUM>-<NUM> and the magnetic isolation element <NUM>-<NUM>. There is a gap between the driving magnetic element <NUM>-M and the driving coil <NUM>-C which correspond to each other.

When a driving signal is applied to the drive assembly <NUM>-MC (for example, an external power supply applies current to the drive coil <NUM>-C), a magnetic force is generated between the drive magnetic element <NUM>-M and the drive coil <NUM>-C, so that the movable part <NUM>-<NUM> can be driven to move relative to the fixed part <NUM>-<NUM>. In this way, when the driving assembly <NUM>-MC receives a driving signal, the driving assembly <NUM>-MC drives the movable part <NUM>-<NUM> with the optical element to move along the optical axis <NUM>-O of the optical element, or move in a plane that is perpendicular to the optical axis <NUM>-O, so as to achieve optical image stabilization, autofocus or the effect of changing the focal length. In some embodiments, the optical axis <NUM>-O also can be regarded as the optical axis of the driving mechanism <NUM>-<NUM>.

It is worth noting that the aforementioned magnetic isolation element <NUM>-B can also be used as a permeability element, located between the housing <NUM>-<NUM> and the driving magnetic element <NUM>-M. By the magnetic isolation element <NUM>-B, the magnetic force (between the driving magnetic element <NUM>-M and the driving coil <NUM>-C) can be enhanced in a predetermined direction, to enhance the magnetic thrust generated by the driving assembly <NUM>-MC to move the movable part <NUM>-<NUM>, and the magnetic interference can be reduced. Moreover, the overall mechanical strength of the fixed part <NUM>-<NUM> can be enhanced. In this way, compared with the traditional voice coil motor (VCM) device having a frame with a certain space provided for carrying magnets, since there is no longer a frame, this embodiment can greatly reduce the space occupied by the components, which is conducive to miniaturization. In addition, the aforementioned extension structure <NUM>-PS also has an inclined surface <NUM>-PS1 inclined with respect to the optical axis <NUM>-O, or inclined with respect to the bottom surface of the base <NUM> or the top surface of the housing <NUM>.

Referring to <FIG>, regarding the position of the magnetic isolation element <NUM>-B, when viewed along the optical axis <NUM>-O direction, the magnetic isolation element <NUM>-B at least partially overlaps the driving magnetic element <NUM>-M. When viewed along a direction that is perpendicular to the optical axis <NUM>-O, the magnetic isolation element <NUM>-B is disposed between the housing <NUM>-<NUM> and the drive magnetic element <NUM>-M.

Referring to <FIG>, regarding the details of the magnetic isolation element <NUM>-B, viewed along the direction perpendicular to the optical axis <NUM>-O, the magnetic isolation element <NUM>-B presents a C-shaped structure, and the magnetic isolation element <NUM>-B includes an upper partition <NUM>-B1 and the two side partitions <NUM>-B2 are connected via the upper partition <NUM>-B1. In the optical axis <NUM>-O direction, the upper partition <NUM>-B1 is located between the driving magnetic element <NUM>-M and the housing <NUM>-<NUM>. The two side plates <NUM>-B2 extend in the optical axis direction <NUM>-O, and in this direction, such as the Z axis, the maximum width <NUM>-W1 of the side partitions <NUM>-B2 is larger than the maximum width <NUM>-W2 of the driving magnetic element <NUM>-M. As shown in <FIG>, viewed along the direction of the perpendicular optical axis <NUM>-O (the Y-axis), the two side partitions <NUM>-B2 of the magnetic isolation element <NUM>-B completely cover the driving magnetic element <NUM>-M, and the two side partitions <NUM>-B2 at least partially overlap the driving coil <NUM>-C. Also viewed along the direction perpendicular to the optical axis <NUM>-O, the two side partitions <NUM>-B2 expose at least a portion of the driving coil <NUM>-C.

In some embodiments, in some embodiments, the holder <NUM>-<NUM> of the movable part <NUM>-<NUM> may be provided with a position sensing element, which may be a position sensor, for example, may be a magnetoresistive sensor (MRS) or optical sensor. The position sensing element is used to sense the relative positional relationship between the movable part <NUM>-<NUM> and the fixed part <NUM>-<NUM>, so that a control unit (not shown) can adjust the position between the two through the driving component <NUM>-MC. In some embodiments, the aforementioned position sensing element belongs to an element of the driving assembly <NUM>-MC.

Referring to <FIG> and <FIG>, the movable part <NUM>-<NUM> of the driving mechanism <NUM>-<NUM> in this embodiment further includes an elastic assembly <NUM>-S, which connects the movable part <NUM>-<NUM> and the housing <NUM>-<NUM>. The elastic assembly <NUM>-S has a first elastic element <NUM>-S1 and a second elastic element <NUM>-S2, which can be used as a flexible leaf spring assembly. In some embodiments, the elastic elements <NUM>-S1, <NUM>-S2 are made of metal. The first and second elastic elements <NUM>-S1, <NUM>-S2 are respectively disposed on the upper and lower sides of the holder <NUM>-<NUM>, or the holder <NUM>-<NUM> is sandwiched between the two. The elastic assembly <NUM>-S movably connects the holder <NUM>-<NUM> and the fixed part <NUM>-<NUM> so that the holder <NUM>-<NUM> can move relative to the housing <NUM>-<NUM> and the base <NUM>-<NUM>. In addition, before the driving signal is applied, the aforementioned elastic assembly <NUM>-S allows the holder <NUM>-<NUM> to maintain an initial position relative to the fixed part <NUM>-<NUM>. In some embodiments, the aforementioned elastic assembly <NUM>-S may be regarded as a part of the movable part <NUM>-<NUM>, which connects the holder <NUM>-<NUM> and the fixed part <NUM>-<NUM>.

For details of the elastic assembly <NUM>-S, the lower second elastic element <NUM>-S2 is placed on the base <NUM>-<NUM>, and can be positioned by a or a plurality of positioning posts of the base <NUM>-<NUM> to connect the holder <NUM>-<NUM> and base <NUM>-<NUM>. In addition, a base body <NUM>-12A of the base <NUM>-<NUM> is provided with a circuit member <NUM>-EC, and the second elastic element <NUM>-S2 is electrically connected to the circuit member <NUM>-EC, so that the second elastic element <NUM>-S2 is used for electrical conduction, being electrically connected to the driving coil <NUM>-C.

For the first elastic element <NUM>-S1 on the upper side, please refer to <FIG>, <FIG>, and <FIG> together, wherein <FIG> is a cross section diagram along line <NUM>-A2-<NUM>-A2' in <FIG>. The first elastic element <NUM>-S1 is located on the upper side of the holder <NUM>-<NUM> and connects the holder <NUM>-<NUM> and the housing <NUM>-<NUM>. The housing <NUM>-<NUM> has a concave portion <NUM>-11R recessed toward the first elastic element <NUM>-S1, so that when the driving mechanism <NUM>-<NUM> is assembled, since the concave portion <NUM>-11R is closer to the first elastic element <NUM>-S1 than the topmost surface of the housing <NUM>-<NUM>, this allows the first elastic element <NUM>-S1 to be more easily assembled with the housing <NUM>-<NUM>, for example, by applying adhesive, which can improve the convenience of assembly. It should be noted that when the first elastic element <NUM>-S1 is to be bonded or joined to the concave portion <NUM>-11R, the first elastic element <NUM>-S1 can be bent to connect the housing <NUM>-<NUM>, such as the bent first elastic element <NUM>-S <NUM>' in <FIG>. In this embodiment, viewed in a direction perpendicular to the optical axis <NUM>-O, the concave portion <NUM>-11R at least partially overlaps the magnetic isolation element <NUM>-B; and the driving magnetic element <NUM>-M is at least partially (such as the upper part of the driving magnetic element <NUM>-M) located between the magnetic isolation element <NUM>-B and the first elastic element <NUM>-S1.

In other embodiments, the first elastic element <NUM>-S1 may be affixed to the base <NUM>-<NUM> of the fixed part <NUM>-<NUM>. For details, please refer to <FIG> and <FIG>. The base <NUM>-<NUM> includes a base body <NUM>-12A and a protruding column portion <NUM>-12B. The protruding column portion <NUM>-12B is extending towards the housing <NUM>-<NUM>, and is connected to the base body <NUM>-12A and disposed around or at the corners of the base body <NUM>-12A, In this embodiment, the protruding column portion <NUM>-12B includes a plurality of (four) columns <NUM>-P, whose long axis direction is parallel (including or substantially parallel, such as +<NUM> or -<NUM> degrees) to the optical axis <NUM>-O. The ends or corners of the first elastic element <NUM>-S1 are connected to the columns <NUM>-P of the protruding column portion <NUM>-12B. In this way, it is also possible to save installations such as a traditional rack frame for elastic elements, to facilitate miniaturization of the device.

<FIG> shows a schematic top plan view of the assembled driving mechanism <NUM>-<NUM> (omitted the housing <NUM>-<NUM> to show the internal structure) in <FIG>. Viewed along the optical axis <NUM>-O direction, each corner <NUM>-S <NUM> of the first elastic element <NUM>-S1 is exposed by the magnetic isolation element <NUM>-B, or the magnetic isolation element <NUM>-B exposes the corners <NUM>-S1 <NUM> of the first elastic element <NUM>-S <NUM>. The exposed corner <NUM>-S11 of the first elastic element <NUM>-S1 is connected to the housing <NUM>-<NUM>. As shown in <FIG>, the concave portion <NUM>-11R of the housing <NUM>-<NUM> corresponding to the exposed corners <NUM>-S11 of the first elastic element <NUM>-<NUM>. Viewed in the optical axis <NUM>-O direction, the concave portion <NUM>-11R, the first elastic element <NUM>-S1 and the protruding column portion <NUM>-12B at least partially overlap.

Continuing to refer to <FIG>, the aforementioned magnetic isolation element <NUM>-B further has an inner notch <NUM>-BE, and a limit portion <NUM>-<NUM> of the holder <NUM>-<NUM> of the movable part <NUM>-<NUM> is exposed to the inner notch <NUM> BE. When the movable part <NUM>-<NUM> is driven by the driving assembly <NUM>-MC to move to a limit position <NUM>-X1 (refer to <FIG>) relative to the fixed part <NUM>-<NUM>, the aforementioned limit portion <NUM>-<NUM> passes through the first elastic element <NUM>-S1, and then passes through the inner notch <NUM>-BE through the magnetic isolation element <NUM>-B and contacts the housing <NUM>-<NUM> to be limited. In this way, through the inner notch <NUM>-BE, the limit portion <NUM>-<NUM> of the movable part <NUM>-<NUM> can pass through the magnetic isolation element <NUM>-B and be directly in contact with the housing <NUM>-<NUM>, so that the moving stroke of the movable part <NUM>-<NUM> can be increased, and the focusing, zooming, or automatic compensation ability of the driving mechanism <NUM>-<NUM> can be improved.

As can be seen from the top view of <FIG>, the magnetic isolation element <NUM>-B has a dodge portion <NUM>-BV. It can be considered that the magnetic isolation element <NUM>-B, which was originally substantially quadrangular, has a missing corner at each of its original corner areas, and this is the dodge portion <NUM>-BV. In the optical axis <NUM>-O direction, the first elastic element <NUM>-S1 is exposed to the dodge portion <NUM>-BV. Viewed in the direction of the optical axis <NUM>-O, the first elastic element <NUM>-S1 protrudes from the dodge portion <NUM>-BV of the magnetic isolation element <NUM>-B, and the shortest distance <NUM>-d1 between the aforementioned inner notch <NUM>-BE and the optical axis <NUM>-O is smaller than the shortest distance <NUM>-d2 between the dodge portion <NUM>-BV and the optical axis <NUM>-O.

Referring to <FIG>, which is a schematic diagram showing a partial driving mechanism <NUM>-<NUM>, and to clearly see the internal structure, the housing <NUM>-<NUM> and the first elastic element <NUM>-S1 are omitted. The driving mechanism <NUM>-<NUM> further includes a winding post <NUM>-<NUM>, which is disposed on the movable part <NUM>-<NUM> for the lead wire of the driving coil <NUM>-C to wind. Specifically, the winding post <NUM>-<NUM> is disposed on the holder <NUM>-<NUM>, and extends or protrudes in a direction perpendicular to the optical axis <NUM>-O. Viewed from the light incident direction <NUM>-LT of the driving mechanism <NUM>-<NUM>, the winding post <NUM>-<NUM> is shielded by the magnetic isolation element <NUM>-B (as shown in <FIG>, the post <NUM>-<NUM> cannot be seen). In addition, when viewed from the light incident direction <NUM>-LT, the winding post <NUM>-<NUM> is also at least partially shielded by the movable part <NUM>-<NUM>, and in this embodiment, the winding post <NUM>-<NUM> is completely covered by the movable part <NUM>-<NUM>. In some embodiments, the winding post <NUM>-<NUM> is a part of the movable part <NUM>-<NUM>, viewed from the incident direction <NUM>-LT, which is completely shielded by the holder <NUM>-<NUM>.

In some embodiments, the driving mechanism <NUM>-<NUM> further includes a shock-absorbing element <NUM>-IN, disposed between the movable part <NUM>-<NUM> and the fixed part <NUM>-<NUM>. In detail, the shock-absorbing element <NUM>-IN is disposed between the protruding column portion <NUM>-12B and the movable part <NUM>-<NUM>, wherein the column <NUM>-P of the protruding column portion <NUM>-12B has an extension structure <NUM>-PS extending toward (horizontal direction) the movable part <NUM>-<NUM>, and the shock-absorbing element <NUM>-IN connects the extension structure <NUM>-PS with the holder <NUM>-<NUM>. The shock-absorbing element <NUM>-IN is disposed in the gap <NUM>-G between the extension structure <NUM>-PS and the holder <NUM>-<NUM>. In the optical axis <NUM>-O direction, the maximum length of the protruding column portion <NUM>-12B is greater than the maximum length of the extension structure <NUM>-PS. In addition, the aforementioned extension structure <NUM>-PS also has an inclined surface <NUM>-PS1 inclined with respect to the optical axis <NUM>-O, or inclined with respect to the bottom surface of the base <NUM> or the top surface of the housing <NUM>.

Continuing to refer to <FIG>, the driving mechanism <NUM>-<NUM> further includes a limit structure <NUM>-<NUM>, and the movable part <NUM>-<NUM> has a groove <NUM>-R which is located at the side of the movable part that is not parallel to the side where the driving magnetic element <NUM>-M is placed. The limiting structure <NUM>-<NUM> and the groove <NUM>-R are matched with each other, thereby limiting the movement of the movable part <NUM>-<NUM> along the direction perpendicular to the optical axis O. In this embodiment, the limit structure <NUM>-<NUM> is located between the plurality of columns <NUM>-P of the protruding column portion <NUM>-12B of the fixed part <NUM>-<NUM>, and the limit structure <NUM>-<NUM> is accommodated in the groove <NUM>-R. Viewed along the optical axis <NUM>-O direction, the thickness of the limit structure <NUM>-<NUM> in a direction perpendicular to the optical axis <NUM>-O (such as the X-axis) is greater than the thickness of the groove <NUM>-R in a direction perpendicular to the optical axis <NUM>-O. It can further ensure that the movement of the movable part <NUM>-<NUM> is restricted and the stability of the device is improved. It should be noted that, in this embodiment, there are two limit structures <NUM>-<NUM> located on both sides of the movable part <NUM>-<NUM> (different from the side where the driving magnetic element <NUM>-M is placed), corresponding to the two grooves <NUM>-R. In other embodiments, only one limiting structure <NUM>-<NUM> and the corresponding groove <NUM>-R can effectively limit the movement of the movable part <NUM>-<NUM>. In some embodiments, the limiting structure <NUM>-<NUM> belongs to the fixed part <NUM>-<NUM>.

In summary, an embodiment of the present invention provides a driving mechanism for an optical element, including a fixed part, a movable part and a driving assembly. The movable part is configured to connect the optical element to the optical axis. The movable part is movable relative to the fixed part. The driving assembly is configured to drive the movable part to move relative to the fixed part. In some embodiments, the driving assembly includes a magnetic isolation element, a driving coil, and a driving magnetic element. The driving coil is arranged in the movable part, and the magnetic isolation element and the driving magnetic element are disposed on the fixed part. The magnetic isolation element is affixed to the fixed part, and viewed in a direction perpendicular to the optical axis, the magnetic isolation element and the driving magnetic element at least partially overlap. Viewed in the direction of the optical axis, the magnetic isolation element and the driving magnetic element at least partially overlap. The fixed part includes a housing, and the magnetic isolation element is disposed between the housing and the driving magnetic element.

The embodiment of the present invention has at least one of the following advantages or effects. By providing a driving assembly, the movable part can be driven to move relative to the fixed part, thereby achieving the functions of optical zoom, focusing and optical compensation. In addition, in some embodiments, the driving assembly includes a magnetic isolation element, which is disposed outside the magnetic element and can be used as a carrier plate for carrying the magnetic element. In this way, not only can the magnetic thrust of the magnetic element be concentrated in a predetermined direction to improve the movement of the movable part, the magnetic isolation element can also prevent or reduce magnetic interference, and, since the magnetic isolation element is used as the carrier plate of the magnetic element, compared with the conventional voice coil motor provided with a rack frame as a carrier for the magnetic element, the driving mechanism without the frame also relatively saves the space used by the element, which is beneficial to miniaturization. In some embodiments, the limit part of the movable part directly passes through the magnetic isolation element and directly contacts the housing of the fixed part, which can greatly increase the stroke distance and improve the optical performance, such as optical zoom, focusing and optical compensation, and more detailed and precise.

It should be noted that the features (such as structures, elements and so on) of the various embodiments can be combined and used as long as they do not violate or conflict the scope of the disclosure.

Claim 1:
A lens drive device (<NUM>-<NUM>), comprising:
a fixed assembly (<NUM>-FA);
a movable assembly (<NUM>-MA), including a lens holder which is configured to be connected to an optical element, wherein the movable assembly (<NUM>-MA) is movable relative to the fixed assembly (<NUM>-FA), and the optical element is a lens and has an optical axis (<NUM>-O);
a driving assembly (<NUM>-DA), configured to drive the movable assembly (<NUM>-MA) to move relative to the fixed assembly (<NUM>-FA);
wherein a main axis (<NUM>-AX) is defined by the fixed assembly (<NUM>-FA), and the main axis (<NUM>-AX) overlaps the optical axis (<NUM>-O);
wherein the fixed assembly includes a casing (<NUM>-<NUM>) and a base (<NUM>-<NUM>), and the casing (<NUM>-<NUM>) and the base (<NUM>-<NUM>) are arranged along the main axis (<NUM>-AX);
wherein the driving assembly (<NUM>-DA) further includes a first coil (<NUM>-CL11), and the first coil (<NUM>-CL11) includes a wire (<NUM>-WL);
characterized in that
the first coil is affixed to the lens holder;
the winding axis of the first coil is perpendicular to the optical axis;
the wire (<NUM>-WL) of the first coil (<NUM>-CL11) having a leading end (<NUM>-WL1), wherein the wire (<NUM>-WL) has a rectangular structure, the rectangular structure has a first side (<NUM>-WLS1) and a second side (<NUM>-WLS2), and an extending direction of the first side (<NUM>-WLS1) is different from an extending direction of the second side (<NUM>-WLS2); wherein a length of the first side (<NUM>-WLS1) is different from a length of the second side (<NUM>-WLS2);
the lens holder of the movable assembly (<NUM>-MA) has a fixing element (<NUM>-<NUM>), and the fixing element protrudes from a side of the lens holder,
wherein the fixing element (<NUM>-<NUM>) has a contact surface <NUM>-<NUM>, and the leading end is connected to the contact surface;
the contact surface (<NUM>-<NUM>) is perpendicular to the main axis (<NUM>-AX) and the optical axis; and
the wire (<NUM>-WL) of the first coil (<NUM>-CL11) does not wind around the protruding portion.