Patent Description:
With the development of science and technology, users have higher and higher requirements for the photographing function and the image quality of a terminal equipment. In order to improve image quality of a camera, the camera may be configured to improve the focus function and the anti-shake function.

<CIT> relates to a camera module and terminal equipment. The camera module includes a base body, a liquid lens, an extrusion structure, an image sensor and a lens group, in which the base body is provided with a light inlet, the liquid lens is arranged at the light inlet and connected with the base body, the extrusion structure is connected with the base body and can extrude the liquid lens to deform the liquid lens, the image sensor is connected with the base body, and the lens group is connected with the base body and located between the liquid lens and the image sensor. Ambient light can enter from the light inlet, penetrates through the liquid lens and the lens group and then enters the image sensor. The camera module, the extrusion structure can extrude the liquid lens to deform the liquid lens; after the liquid lens is deformed, the radian of the surface of the liquid lens is also changed, so that the angle of the light passing through the liquid lens can be adjusted, the focusing or anti-shake function can be realized, the focusing or anti-shake requirement of the high-pixel camera module can be met, and the miniaturization design of the camera module is facilitated.

<CIT> relates to a camera module. The camera module includes: a stator; a mover arranged in the stator; a first driver arranged on the stator; a second driver arranged on the mover and facing the first driver; a stiffener including an external portion coupled to the stator, an internal portion coupled to the mover, and a connector for connecting the external portion to the internal portion; a substrate coupled to the stator and the mover, and arranged on the stiffener; and a lens module coupled to the substrate.

<CIT> relates to a camera module, including: a housing; a liquid lens disposed in the housing; a magnet disposed in the housing; a base spaced apart from the housing; a substrate which includes a coil facing the magnet, and which is disposed on the base; a plurality of wires connected to the housing and the substrate; and a connection part connecting the liquid lens and at least one wire of the plurality of wires, in which the liquid lens and the substrate are electrically connected to the connection part by means of at least one wire.

<CIT> relates to a lens module and a lens module control method to implement, among other features, automatic focusing and improve image definition. The lens module includes an imaging lens, a first control module, a first processing module, a liquid lens, and an image chip. The liquid lens is configured to refract an imaging beam that comes from the imaging lens, and the liquid lens comprises a transparent first flat lens and a transparent second flat lens that are parallel to each other. The first control module is configured to adjust a distance between the first flat lens and the second flat lens. The first processing module is configured to adjust a distance between the first flat lens and the second flat lens by using the first control module and based on a definition of the digital image, so as to adjust the definition of the image generated by the image chip.

The present disclosure provides an actuator, a camera unit and an electronic device, so as to overcome the defects in the related art.

According to embodiments of a first aspect of the present disclosure, an actuator for a camera unit is provided. The actuator includes: a seat configured to be assembled with a first lens and a fluid lens of the camera unit; a stator assembly fixedly connected to the seat; a focusing mover assembly configured to be connected with the fluid lens; and an anti-shake mover assembly configured to be connected with the first lens. The focusing mover assembly is configured to move along a first direction of the seat by interacting with the stator assembly, for adjusting a curvature of the fluid lens, and the anti-shake mover assembly is configured to translate in a plane perpendicular to the first direction by interacting with the stator assembly, for driving the first lens to move.

Optionally, the focusing mover assembly is arranged on an outer side of the stator assembly around the first direction, and the anti-shake mover assembly is arranged on an inner side of the stator assembly around the first direction.

Optionally, the stator assembly includes a first acting member, the focusing mover assembly includes a second acting member, the anti-shake mover assembly includes a third acting member, the first acting member interacts with the second acting member so that the focusing mover assembly moves in the first direction, and the first acting member interacts with the third acting member so that the anti-shake mover assembly translates in the plane perpendicular to the first direction. Preferably, the first acting member includes a stator magnet, the second acting member includes a focusing coil, and the third acting member includes an anti-shake coil; or, the first acting member includes a stator coil, the second acting member includes a focusing magnet, and the third acting member includes an anti-shake magnet.

Optionally, the stator assembly further includes an annular bracket fixedly connected to the seat, and the first acting member is arranged to the annular bracket along a circumferential direction of the annular bracket.

Optionally, the first acting member includes the stator magnet. One or more stator magnets are arranged to the annular bracket along the circumferential direction of the annular bracket. Each stator magnet has a first polarity on a side facing the anti-shake mover assembly, and has a second polarity on a side facing the focusing mover assembly. Preferably, the annular bracket includes an annular magnetic-conductive bracket; and/or the annular bracket includes one or more openings arranged at intervals along the circumferential direction, and the one or more openings are arranged in a one-to-one correspondence with the one or more stator magnets.

Optionally, the third acting member includes the anti-shake coil, each stator magnet is arranged corresponding to one or more anti-shake coils, and a direction of a central axis of the anti-shake coil and a polarity arrangement direction of the stator magnet are perpendicular to the first direction; and/or the polarity arrangement directions of at least two of the one or more stator magnets are orthogonal to each other; and/or the second acting member includes the focusing coil, a direction of a central axis of the focusing coil is parallel to the first direction, and a polarity arrangement direction of the stator magnet is perpendicular to the first direction.

Optionally, the first acting member includes the stator coil, and a direction of a central axis of the stator coil and a direction of a central axis of the annular bracket are both parallel to the first direction.

Optionally, the focusing mover assembly includes: a first mounting base arranged in the seat and including a first through hole, the stator assembly being arranged in the first through hole, and the second acting member being connected to the first mounting base along a circumferential direction of the first mounting base; and a first connecting sheet connected to the first mounting base along the first direction, and configured to be connected with the fluid lens.

Optionally, the actuator further includes: a first elastic sheet arranged between the seat and the first mounting base along the circumferential direction of the first mounting base, and connected to the seat and the first mounting base respectively; and a second elastic sheet arranged between the seat and the first mounting base along the circumferential direction of the first mounting base, and connected to the seat and the first mounting base respectively, the second elastic sheet and the first elastic sheet being arranged along the first direction.

Optionally, the anti-shake mover assembly includes a second mounting base arranged in the seat and including a second through hole, and the first lens is configured to be assembled in the second through hole. The third acting member is arranged on a side of the second mounting base facing the stator assembly along a circumferential direction of the second mounting base.

Optionally, the anti-shake mover assembly further includes: a second connecting sheet connected to an end of the second mounting base; and a suspension wire having an end connected to the second connecting sheet and another end connected to an end of the seat, and the end of the second mounting base and the end of the seat being arranged opposite to each other along the first direction. The suspension wire has a larger rigidity in the first direction than in a second direction, and the second direction is perpendicular to the first direction.

Optionally, the actuator further includes: a Hall magnet; and a Hall sensor arranged in a one-to-one correspondence with the Hall magnet. One of the Hall sensor and the Hall magnet is connected to the anti-shake mover assembly, and the other one of the Hall sensor and the Hall magnet is connected to the seat. Preferably, the actuator further includes a shielding cover, the Hall magnet is arranged in the shielding cover, and the shielding cover and the Hall magnet are both connected to the anti-shake mover assembly or the seat.

Optionally, the actuator includes more than one Hall magnet, a polarity arrangement direction of each Hall magnet is parallel to the first direction, and extension directions of at least two of the more than one Hall magnet are orthogonal to each other. Or, the actuator includes more than one Hall magnet, a polarity arrangement direction of each Hall magnet is perpendicular to the first direction, and the polarity arrangement directions of at least two of the more than one Hall magnet are perpendicular to each other.

According to embodiments of a second aspect of the present disclosure, a camera unit is provided. The camera unit includes: an actuator according to any one of the above embodiments; a fluid lens assembled to the seat of the actuator; and a first lens comprising a solid-state lens and connected to the anti-shake mover assembly of the actuator.

According to embodiments of a third aspect of the present disclosure, an electronic device is provided. The electronic device includes a camera unit according to any one of the above embodiments.

The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects.

It can be seen from the above embodiments that in the technical solutions of the present disclosure, through the interaction between the focusing mover assembly and the stator assembly, the curvature of the fluid lens can be changed to achieve the purpose of focusing, and through the interaction between the anti-shake mover assembly and the stator assembly, the relative position relationship between the first lens and the fluid lens can be changed by adjusting the position parameters of the first lens, so as to achieve the purpose of optical image stabilization. Thus, the focusing function and the anti-shake function of the camera unit can be realized independently. Compared with the related art, the mutual influence between the focusing process and the anti-shake process can be avoided, which is conducive to improving the image quality.

It is to be understood that both the foregoing general description and the following detailed description are illustrative and explanatory only and are not restrictive of the present disclosure.

Reference will now be made in detail to illustrative embodiments, examples of which are illustrated in the accompanying drawings. The implementations set forth in the following description of illustrative embodiments do not represent all implementations consistent with the present disclosure.

Terms used herein in the description of the present disclosure are only for the purpose of describing specific embodiments, but should not be construed to limit the present disclosure. As used in the description of the present disclosure and the appended claims, "a", "said" and "the" in singular forms mean to include plural forms, unless clearly indicated in the context otherwise. It should also be understood that, as used herein, the term "and/or" represents and contains any one and all possible combinations of one or more associated listed items.

It should be understood that, although terms such as first, second and third are used herein for describing various kinds of information in the present disclosure, such information should not be limited to these terms. These terms are only used for distinguishing the same type of information from each other. For example, without departing from the scope of the present disclosure, a first information may also be called as a second information, and similarly, the second information may also be called as the first information. Depending on the context, the term "if" may be construed to mean "when" or "upon" or "in response to determining".

In the related art, a liquid lens in the camera may be squeezed by unequal forces to achieve focusing through the deformation of the liquid lens. At the same time, due to the different forces, the degrees of deformation of various areas of the liquid lens are different, so that a transmission path of an incident light can be adjusted, thus achieving the anti-shake.

However, in the related art, the deformation of the liquid lens is used to achieve both the anti-shake and the focusing effects. In some cases, it is inevitable that the focusing effect is good, while the anti-shake effect is not ideal; or, the anti-shake effect is relatively good, while the focusing cannot be achieved. That is, it is difficult to achieve both the anti-shake effect and the focusing effect of the camera.

<FIG> is a top view of a camera unit <NUM> according to an illustrative embodiment, <FIG> is a sectional view of the camera unit <NUM> in <FIG>, and <FIG> is an exploded view of the camera unit <NUM> in <FIG>. As shown in <FIG>, the camera unit <NUM> includes an actuator <NUM>, a fluid lens <NUM>, and a first lens <NUM>. The first lens <NUM> is a conventional solid-state lens that is different from the fluid lens <NUM>. For example, the first lens <NUM> may include a prime lens. A fluid in the fluid lens <NUM> may include but is not limited to fluids such as a liquid metal, a gel, a liquid, and a gas. When the fluid in the liquid lens <NUM> is a liquid, the fluid lens <NUM> is a liquid lens. The actuator <NUM> includes a seat <NUM>, and both the first lens <NUM> and the fluid lens <NUM> may be assembled to the seat <NUM>. For example, in the embodiment of <FIG>, the first lens <NUM> and the fluid lens <NUM> may be arranged along a first direction of the seat <NUM>. That is, as shown in <FIG>, the first lens <NUM> and the fluid lens <NUM> may be assembled to the seat <NUM> along a direction indicated by an arrow A in <FIG>, and the first direction may correspond to an optical axis direction of the camera unit <NUM>.

It can be understood that, in order to improve the imaging effect of the camera unit <NUM>, the auto focusing and optical image stabilization can be achieved through the actuator <NUM>, so as to achieve the purpose of imaging with a high resolution. Based on this requirement, in the technical solution of the present disclosure, the actuator <NUM> further includes a stator assembly <NUM>, a focusing mover assembly <NUM>, and an anti-shake mover assembly <NUM>. The stator assembly <NUM> is assembled in the seat <NUM> and fixedly connected with the seat <NUM>. The focusing mover assembly <NUM> and the anti-shake mover assembly <NUM> are also arranged in the seat <NUM>. Different from the stator assembly <NUM>, the focusing mover assembly <NUM> and the anti-shake mover assembly <NUM> can move relative to the seat <NUM>, so as to achieve the purpose of auto focusing and optical image stabilization.

For example, through the interaction between the stator assembly <NUM> and the focusing mover assembly <NUM>, a force acting on the focusing mover assembly <NUM> in the first direction can be generated, and the focusing mover assembly <NUM> can move in the first direction of the seat <NUM>. Thus, the fluid lens <NUM> can be squeezed and the fluid in the fluid lens <NUM> flows, so as to achieve the purpose of adjusting a curvature of the fluid lens <NUM>, thus achieving the focusing. Through the interaction between the stator assembly <NUM> and the anti-shake mover assembly <NUM>, the anti-shake mover assembly <NUM> can be translated in a plane perpendicular to the first direction, so as to drive the first lens <NUM> to move, thus realizing the anti-shake of the camera unit <NUM>.

It can be seen from the above embodiments that in the technical solution of the present disclosure, the interaction between the focusing mover assembly <NUM> and the stator assembly <NUM> can cause the curvature of the fluid lens <NUM> to change so as to achieve the purpose of focusing, and through the interaction between the anti-shake mover assembly <NUM> and the stator assembly <NUM>, the relative position relationship between the first lens <NUM> and the fluid lens <NUM> can be changed by adjusting the position of the first lens <NUM>, so as to achieve the purpose of optical image stabilization. Thus, the focusing function and the anti-shake function of the camera unit <NUM> can be achieved independently. Compared with the related art, the mutual influence between the focusing process and the anti-shake process can be avoided, which is beneficial to improving the image quality.

In the technical solution of the present disclosure, the focusing mover assembly <NUM> can be arranged on an outer side of the stator assembly <NUM> around the first direction, the anti-shake mover assembly <NUM> can be arranged on an inner side of the stator assembly <NUM> around the first direction, and the first lens <NUM> is arranged on a side of the anti-shake mover assembly <NUM> facing away from the stator assembly <NUM>. Based on this, the focusing mover assembly <NUM>, the stator assembly <NUM>, the anti-shake mover assembly <NUM> and the first lens <NUM> are assembled in the form of multi-layer lantern rings, which is beneficial to reducing the overall height of the camera unit <NUM>, thus facilitating an internal layout of an electronic device provided with the camera unit <NUM>. Of course, in the embodiments of the present disclosure, the form of lantern rings is taken as an example for illustration. In other embodiments, the focusing mover assembly <NUM> and the stator assembly <NUM> may be arranged along the first direction, and the anti-shake mover assembly <NUM> is arranged on the inner side of the stator assembly <NUM>. Or, the focusing mover assembly <NUM> is arranged on the outer side of the stator assembly <NUM>, and the anti-shake mover assembly <NUM> and the stator assembly <NUM> are arranged along the first direction. That is, the whole is designed in such a manner that the focusing mover assembly <NUM> can move in the first direction, and the anti-shake mover assembly <NUM> can translate in a plane perpendicular to the optical axis, which is not limited in the present disclosure. Similarly, in some other embodiments, the first lens <NUM> and the anti-shake mover assembly <NUM> may also be arranged along the first direction, which is not limited in the present disclosure. In the embodiments of the present disclosure, the interaction of the same stator assembly <NUM> with the focusing mover assembly <NUM> and the anti-shake mover assembly <NUM> is taken as an example for illustration. In some other possible embodiments, the focusing mover assembly <NUM> and the anti-shake mover assembly <NUM> can also interact with different stator assemblies <NUM>.

As shown in <FIG> and <FIG>, the first direction is the optical axis direction of the camera unit <NUM>, the focusing mover assembly <NUM> is arranged on the outer side of the stator assembly <NUM> and surrounds the stator assembly <NUM>, and the anti-shake mover assembly <NUM> is arranged on the inner side of the stator assembly <NUM> and surrounded by the stator assembly <NUM>.

Regarding the interaction between the stator assembly <NUM> and the focusing mover assembly <NUM>, and the interaction between the stator assembly <NUM> and the anti-shake mover assembly <NUM>, for example, the stator assembly <NUM> may include a first acting member, the focusing mover assembly <NUM> may include a second acting member, and the anti-shake mover assembly <NUM> may include a third acting member. The first acting member interacts with the second acting member to push the focusing mover assembly <NUM> to move in the first direction. The first acting member interacts with the third acting member so that the anti-shake mover assembly <NUM> translates in the plane perpendicular to the first direction. The first acting member, the second acting member, and the third acting member may include various structures, which will be illustrated as follows.

In some possible embodiments, the first acting member may include a stator magnet, and the second acting member of the focusing mover assembly <NUM> may include a focusing coil <NUM>. The focusing coil <NUM> and the fluid lens <NUM> are arranged along the first direction. After the camera unit <NUM> receives a focusing instruction, the focusing coil <NUM> can be energized. Then, the focusing coil <NUM> can interact with the stator magnet of the stator assembly <NUM> to generate the force in the first direction, the focusing mover assembly <NUM> is pushed to move towards the fluid lens <NUM> by the force, and the fluid lens <NUM> is squeezed and hence deformed to change the curvature of the fluid lens <NUM>, thus achieving the purpose of focusing. The third acting member of the anti-shake mover assembly <NUM> may include an anti-shake coil. The anti-shake mover assembly <NUM> is also assembled with the first lens <NUM>. When the camera unit <NUM> receives an anti-shake instruction, the anti-shake coil can be energized. Then, the anti-shake coil interacts with the stator magnet of the stator assembly <NUM> to generate a force perpendicular to the first direction, and the anti-shake mover assembly <NUM> is pushed by the force to translate in the plane perpendicular to the first direction relative to the seat <NUM>, so as to adjust the relative position relationship between the first lens <NUM> and the fluid lens <NUM>, and to compensate for image blur caused by shaking of a user during photo-shooting, thus achieving the purpose of optical image stabilization.

In some other possible embodiments, the first acting member of the stator assembly <NUM> may also include a stator coil, the second acting member of the focusing mover assembly <NUM> may include a focusing magnet, and the third acting member of the anti-shake mover assembly <NUM> may include an anti-shake magnet. By properly setting a direction of a magnetic induction line of the focusing magnet, a N pole and a S pole of the anti-shake magnet, and a current direction in the stator coil, it is possible to push the focusing mover assembly <NUM> to move along the first direction when the stator coil interacts with the focusing magnet, and also to push the anti-shake mover assembly <NUM> to translate in the plane perpendicular to the first direction through the interaction between the stator coil and the anti-shake magnet.

For example, the stator assembly <NUM> may include the first acting member and an annual bracket <NUM>. The annual bracket <NUM> is fixedly connected to the seat <NUM>. The first acting member is arranged to the annular bracket <NUM> along a circumferential direction of the annular bracket <NUM>.

For example, the focusing mover assembly <NUM> may include the second acting member, a first mounting base <NUM>, and a first connecting sheet <NUM>. The first mounting base <NUM> may be arranged in the seat <NUM>. The first mounting base <NUM> may include a first through hole <NUM>, and the stator assembly <NUM> may be arranged in the first through hole <NUM>. The second acting member may be arranged on an outer side of the first mounting base <NUM> along a circumferential direction of the first mounting base <NUM>. The first connecting sheet <NUM> is connected to the first mounting base <NUM> in the first direction, and the first connecting sheet <NUM> is configured to be connected to the fluid lens <NUM>.

For example, the anti-shake mover assembly <NUM> may include the third acting member and a second mounting base <NUM>, and the second mounting base <NUM> may be arranged in the seat <NUM>. The second mounting base <NUM> may be arranged on the inner side of the stator assembly <NUM>. The second mounting base <NUM> may include a second through hole <NUM>, and the first lens <NUM> may be arranged in the second through hole <NUM> and assembled with the second mounting base <NUM>. The third acting member may be arranged on a side of the second mounting base <NUM> facing the stator assembly <NUM> along a circumferential direction of the second mounting base <NUM>.

For example, one integral third acting member may be arranged on the side of the second mounting base <NUM> facing the stator assembly <NUM> along the circumferential direction of the second mounting base <NUM>.

Or, more than one third acting member may be arranged at intervals on the side of the second mounting base <NUM> facing the stator assembly <NUM> along the circumferential direction of the second mounting base <NUM>. For example, the anti-shake mover assembly <NUM> may also include a second connecting sheet <NUM> and a suspension wire <NUM>. The second connecting sheet <NUM> is connected to an end of the second mounting base <NUM>. One end of the suspension wire <NUM> may be connected to the second connecting sheet <NUM>, and the other end of the suspension wire <NUM> may be connected to an end of the seat <NUM>. The end of the second mounting base <NUM> and the end of the seat <NUM> are arranged opposite to each other along the first direction of the seat <NUM>.

In order to describe the embodiments of the present disclosure in detail, the following illustration is made by taking an example in which the first acting member includes the stator magnet, the second acting member includes the focusing coil, and the third acting member includes the anti-shake coil. For example, more than one first acting member (two or more first acting members) may be provided, that is, more than one stator magnet may be provided, and the more than one stator magnet are arranged on the annual bracket <NUM> along a circumferential direction of the annual bracket <NUM>. For example, the number of the first acting members may be <NUM>, that is, four stator magnets may be provided in this example.

In other embodiments, one stator magnet may also be provided, as long as the stator magnet can interact with the focusing coil <NUM> and the anti-shake coil to move the focusing mover assembly <NUM> and the anti-shake mover assembly <NUM>, respectively, as described above.

As shown in <FIG>, the stator assembly <NUM> may include the annular bracket <NUM>, four stator magnets are provided and include a first stator magnet <NUM>, a second stator magnet <NUM>, a third stator magnet <NUM>, and a fourth stator magnet <NUM>. The first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM> and the fourth stator magnet <NUM> are arranged on the annular bracket <NUM> along a circumferential direction of the annular bracket <NUM>. The focusing mover assembly <NUM> is located on an outer side of the annular bracket <NUM>, and the anti-shake mover assembly <NUM> is located on an inner side of the annular bracket <NUM>. Based on this, as shown in <FIG>, the focusing coil <NUM> is located on the outer side of the annular bracket <NUM>, and the anti-shake coil is located on the inner side of the annular bracket <NUM>. The sides of the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM> and the fourth stator magnet <NUM> facing the anti-shake mover assembly <NUM> each have a first polarity, and the other sides of the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM> and the fourth stator magnet <NUM> facing the focusing mover assembly <NUM> each have a second polarity.

The first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> each can interact with the focusing coil <NUM> to generate the force along the first direction so as to realize the movement of the focusing mover assembly <NUM>. The first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM> and the fourth stator magnet <NUM> each can also interact with the anti-shake coil to generate the force perpendicular to the first direction so as to push the anti-shake mover assembly <NUM> to translate. In the embodiments of the present disclosure, the stator assembly <NUM> including the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> is only taken as an example for illustration. In some other embodiments, the stator assembly <NUM> may also include other numbers of stator magnets, which is not limited in the present disclosure.

For example, the annular bracket <NUM> may include an annular magnetic-conductive bracket. Since the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> are arranged at intervals on the annular magnetic-conductive bracket, the magnetism of each stator magnet can extend beyond its both ends, so that a portion of the annular magnetic-conductive bracket that is not provided with the stator magnet is also magnetic, and can interact with the focusing coil <NUM>, which can increase the uniformity of the force acting on the focusing mover assembly <NUM> in the first direction.

In some possible embodiments, the annular bracket <NUM> may include more than one opening <NUM> arranged at intervals along the circumferential direction of the annular bracket <NUM>, and the more than one opening <NUM> are arranged in a one-to-one correspondence with the more than one stator magnet. For example, the more than one opening <NUM> may be arranged in a one-to-one correspondence with the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM>, so as to avoid a partition from existing between the stator magnet and the anti-shake coil, thus not affecting the anti-shake effect. When the stator assembly <NUM> includes other numbers of stator magnets, these stator magnets may be arranged in a one-to-one correspondence with the openings <NUM> in the annual bracket <NUM>.

In the other embodiments where one stator magnet is provided, one opening <NUM> may also be provided accordingly so as to correspond with the stator magnet.

In order to facilitate the understanding of the technical solution of the present disclosure, the implementation of the focusing function and the anti-shake function is illustrated in the following by taking an example in which the first polarity is the S pole and the second polarity is the N pole.

For the focusing function of the camera unit <NUM>, since the side of each stator magnet facing the focusing mover assembly may be the N pole, and the side of each stator magnet facing the anti-shake mover assembly <NUM> may be the S pole, the magnetic induction lines of the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM> and the fourth stator magnet <NUM> are each directed from the side of the corresponding magnet facing the focusing mover assembly to the side of the corresponding magnet facing the anti-shake mover assembly <NUM>. A direction of a central axis of the focusing coil <NUM> is parallel to the first direction, and polarity arrangement directions of the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> are perpendicular to the first direction. The polarity arrangement direction is an arrangement direction of the N pole and the S pole of the stator magnet. The focusing coil <NUM> may be formed by a conductive wire wound around the direction of the central axis (i.e., a direction shown by an arrow B in <FIG>) in multiple turns, so that an energizing current in the focusing coil <NUM> flows around the direction of the central axis of the focusing coil <NUM>. Based on this, when the focusing instruction is received, the focusing coil <NUM> is energized. According to the left-hand rule, the focusing coil <NUM> interacts with the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> to generate an upward force in the first direction respectively, and then the focusing mover assembly <NUM> is pushed to move towards the fluid lens <NUM> as a whole, so as to squeeze the fluid lens <NUM> and adjust the curvature of the fluid lens <NUM>, thus achieving the purpose of focusing. Or, by adjusting the current direction in the focusing coil <NUM>, the focusing coil <NUM> interacts with the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> to generate a downward force in the first direction respectively, then the focusing mover assembly <NUM> is reset, and the deformation of the fluid lens <NUM> is restored.

The polarity arrangement direction is an arrangement direction of the N pole and the S pole of the stator magnet. For example, the polarity arrangement direction is an arrangement direction from the N pole to the S pole of the stator magnet or an arrangement direction from the S pole to the N pole of the stator magnet.

As shown in <FIG>, the focusing mover assembly <NUM> may also include the first mounting base <NUM> and the first connecting sheet <NUM>, the first mounting base <NUM> may be arranged in the seat <NUM>, the first mounting base <NUM> may include the first through hole <NUM>, and the stator assembly <NUM> may be arranged in the first through hole <NUM>. The focusing coil <NUM> may be arranged on the outer side of the first mounting base <NUM> along the circumferential direction of the first mounting base <NUM>, so that the focusing coil <NUM> can be arranged corresponding to the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM>. Of course, in order to strengthen the force generated by the interaction between the focusing coil <NUM> and the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM>, the first mounting base <NUM> may also include more than one opening, and the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> may be arranged corresponding to the respective openings, so that there are no other obstacles between the focusing coil <NUM> and the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM> and the fourth stator magnet <NUM>, and hence the force for pushing the focusing mover assembly <NUM> to move in the first direction is enhanced.

The first connecting sheet <NUM> may be arranged to the first mounting base <NUM> along the first direction, and the first connecting sheet <NUM> may be configured to be connected with the fluid lens <NUM>, so that when the focusing mover assembly <NUM> moves toward the fluid lens <NUM>, the first connecting sheet <NUM> can act on the liquid lens, thus causing the curvature of the fluid lens <NUM> to change. For example, as shown in <FIG>, the fluid lens <NUM> may include a fixed frame <NUM>, a diaphragm <NUM>, and a movable sheet <NUM>. The diaphragm <NUM> is connected to the fixed frame <NUM>, and the liquid may be provided between the diaphragm <NUM> and the fixed frame <NUM>. The movable sheet <NUM> is connected with the diaphragm <NUM>, and the movable sheet <NUM> is also connected with the first connecting sheet <NUM>, so that when the first connecting sheet <NUM> moves towards the fluid lens <NUM>, the movable sheet <NUM> can be pushed by the first connecting sheet <NUM> to move, so as to cause the liquid between the fixed frame <NUM> and the diaphragm <NUM> to flow, thus adjusting the curvature of the fluid lens <NUM>.

Of course, after the focusing mover assembly <NUM> completes the focusing, or after the photo-shooting is completed, the focusing mover assembly <NUM> needs to be reset, so that the focusing mover assembly <NUM> can subsequently interact with the stator assembly <NUM> for focusing again. Therefore, in order to reset the focusing mover assembly <NUM>, the actuator <NUM> may further include a first elastic sheet <NUM> and a second elastic sheet <NUM>. The first elastic sheet <NUM> may be arranged between the seat <NUM> and the first mounting base <NUM> along the circumferential direction of the first mounting base <NUM>, and the first elastic sheet <NUM> may be fixedly connected to the first mounting base <NUM> and the seat <NUM> respectively, for example, being fixed by welding. Similarly, the second elastic sheet <NUM> may be arranged between the seat <NUM> and the first mounting base <NUM> along the circumferential direction of the first mounting base <NUM>, and the second elastic sheet <NUM> is fixedly connected to the first mounting base <NUM> and the seat <NUM> respectively, for example, being fixed by welding. The first elastic sheet <NUM> and the second elastic sheet <NUM> are arranged along the first direction, and there is a certain distance between the first elastic sheet <NUM> and the second elastic sheet <NUM> in the first direction. Based on this, the focusing mover assembly <NUM> can be suspended between the stator assembly <NUM> and the seat <NUM> through the action of the first elastic sheet <NUM> and the second elastic sheet <NUM>. When the focusing mover assembly <NUM> moves towards the fluid lens <NUM> in the first direction, the first elastic sheet <NUM> and the second elastic sheet <NUM> will be caused to deform, so that after the focusing coil <NUM> is powered off, the focusing coil <NUM> is not subject to an external force, and thus can be reset under the action of the first elastic sheet <NUM> and the second elastic sheet <NUM>. Further, due to the action of the first elastic sheet <NUM> and the second elastic sheet <NUM>, the focusing mover assembly <NUM> can be reset to the same position after each focusing. Moreover, through the action of the first elastic sheet <NUM> and the second elastic sheet <NUM>, the movement of the focusing mover assembly <NUM> in the plane perpendicular to the first direction can be restricted.

Regarding the anti-shake function of the camera unit <NUM>, as an illustrative illustration, the anti-shake mover assembly <NUM> may include the anti-shake coil that interacts with the stator magnet of the stator assembly <NUM>. Still taking the embodiment of the present disclosure, in which the stator magnet includes the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM>, as an example, the anti-shake coil may include a first anti-shake coil <NUM>, a second anti-shake coil <NUM>, a third anti-shake coil <NUM> and a fourth anti-shake coil <NUM> correspondingly. The first anti-shake coil <NUM> is arranged corresponding to the first stator magnet <NUM>, the second anti-shake coil <NUM> is arranged corresponding to the second stator magnet <NUM>, the third anti-shake coil <NUM> is arranged corresponding to the third stator magnet <NUM>, and the fourth anti-shake coil <NUM> is arranged corresponding to the fourth stator magnet <NUM>. A direction of a central axis of each anti-shake coil is perpendicular to the first direction, that is, the direction of the central axis of each anti-shake coil (i.e., a direction shown by an arrow C in <FIG>) is parallel to the polarity arrangement direction of the corresponding stator magnet. An energized current in each anti-shake coil flows around the direction of the central axis of the anti-shake coil. Based on this, after any anti-shake coil is energized, a magnetic field may be generated around the anti-shake coil. By controlling a direction of the current in each anti-shake coil, a side of the anti-shake coil facing the stator magnet <NUM> may be the S pole or the N pole. Since the sides of the first stator magnet <NUM>, the second stator magnet <NUM>, the third stator magnet <NUM>, and the fourth stator magnet <NUM> facing the anti-shake mover assembly <NUM> are all the S poles, a repulsive force or an attractive force is generated between the anti-shake coil and the stator magnet, so that the anti-shake mover assembly <NUM> is pushed to move away from the stator magnet corresponding to any anti-shake coil in the plane perpendicular to the first direction, or the anti-shake mover assembly <NUM> is attracted to move in a direction of approaching the stator magnet corresponding to any anti-shake coil in the plane perpendicular to the first direction. For example, by controlling the energization, the de-energization, the current direction and the current magnitude of the anti-shake coil in the magnetic fields of the more than one stator magnet, the magnitude and direction of the force acting on the anti-shake mover assembly <NUM> can be adjusted, and thus the compensation can be made in various directions, improving the practicality of the anti-shake function.

Of course, in the above embodiment, the anti-shake coils and the stator magnets having the one-to-one correspondence are only taken as an example for illustration. In other embodiments, a single stator magnet can correspond to more than one anti-shake coil, and the directions of the energized currents in the more than one anti-shake coil corresponding to the same stator magnet are identical, so that the directions of the generated forces are identical. In the above embodiment, the first stator magnet <NUM> and the third stator magnet <NUM> are arranged opposite to each other, the second stator magnet <NUM> and the fourth stator magnet <NUM> are arranged opposite to each other, and the polarity arrangement directions of two adjacent stator magnets are orthogonal to each other. Based on this, the forces parallel to the plane perpendicular to the first direction and orthogonal to each other are generated, so as to push the anti-shake mover assembly <NUM> to translate in various directions in the plane perpendicular to the first direction, thus realizing shake compensation in various directions. In some other possible embodiments, there may also be at least one group of stator magnets with orthogonal polarity arrangement directions in the more than one stator magnet, so that the forces parallel to the plane perpendicular to the first direction and orthogonal to each other are generated, and also the shake compensation in various directions can be achieved, which can be specifically designed as required, and is not limited in the present disclosure.

Herein, it should be noted that "orthogonal" may be interpreted as "perpendicular", and can be exchanged without contradiction.

As shown in <FIG>, the anti-shake mover assembly <NUM> may include a second mounting base <NUM>, and the second mounting base <NUM> may be arranged in the seat <NUM>. The second mounting base <NUM> may be arranged on the inner side of the stator assembly <NUM>, and the second mounting base <NUM> may include the second through hole <NUM>. The first lens <NUM> is arranged in the second through hole <NUM> and assembled with the second mounting base <NUM>. The first anti-shake coil <NUM>, the second anti-shake coil <NUM>, the third anti-shake coil <NUM> and the fourth anti-shake coil <NUM> may be arranged at intervals on an outer side of the second mounting base <NUM> along a circumferential direction of the second mounting base <NUM>, so that the first anti-shake coil <NUM>, the second anti-shake coil <NUM>, the third anti-shake coil <NUM>, and the fourth anti-shake coil <NUM> can correspond to the stator magnets in the stator assembly <NUM>, respectively. For example, the anti-shake mover assembly <NUM> may also include the second connecting sheet <NUM> and the suspension wire <NUM>. The second connecting sheet <NUM> is connected to the end of the second mounting base <NUM>. One end of the suspension wire <NUM> may be connected to the second connecting sheet <NUM>, and the other end of the suspension wire <NUM> may be connected to the end of the seat <NUM>. The end of the second mounting base <NUM> and the end of the seat <NUM> are arranged opposite to each other along the first direction of the seat <NUM>, so that the suspension wire <NUM> can be arranged along the first direction, and the suspension wire <NUM> has a larger rigidity in the first direction than in a second direction perpendicular to the first direction. Thus, when the stator assembly <NUM> and the anti-shake mover assembly <NUM> interact with each other to generate the force, since the rigidity of the suspension wire <NUM> is weak in the second direction perpendicular to the first direction, the anti-shake mover assembly <NUM> can drive the first lens <NUM> to move in the plane perpendicular to the first direction, and since the rigidity of the suspension wire <NUM> in the first direction is relatively strong, the movements of the anti-shake mover assembly <NUM> and the first lens <NUM> in the first direction can be reduced, and thus the interference to the focusing function can be reduced.

In order to realize a closed-loop control of the anti-shake function, in the embodiments of the present disclosure, the actuator <NUM> may also include a Hall magnet and a Hall sensor, the Hall magnet and the Hall sensor may be arranged in a one-to-one correspondence, one of the Hall sensor and the Hall magnet may be connected to the anti-shake mover assembly <NUM>, and the other one of the Hall sensor and the Hall magnet may be connected to the seat <NUM>, so that a position and a displacement of the anti-shake mover assembly <NUM> can be calculated according to a change of a magnetic field intensity detected by the Hall sensor, and then it is determined whether the shake compensation has been completed currently. For example, taking the embodiment of the present disclosure as an example, the Hall magnet may include a first Hall magnet <NUM> and a second Hall magnet <NUM>, and both the first Hall magnet <NUM> and the second Hall magnet <NUM> may be connected with the second mounting base <NUM> of the anti-shake mover assembly <NUM>. The polarity arrangement directions of the first Hall magnet <NUM> and the second Hall magnet <NUM> may be parallel to the first direction, and extension directions of the first Hall magnet <NUM> and the second Hall magnet <NUM> are orthogonal to each other, so that the Hall sensor can detect the displacement of the anti-shake mover assembly <NUM> in the orthogonal directions, so as to obtain a coordinate position of the anti-shake mover assembly <NUM>.

The Hall sensor may also include a first Hall sensor <NUM> and a second Hall sensor <NUM> connected to the seat <NUM>. The first Hall magnet <NUM> is arranged corresponding to the first Hall sensor <NUM>, and the second Hall magnet <NUM> is arranged corresponding to the second Hall sensor <NUM>. When the anti-shake mover assembly <NUM> moves, a relative position relationship between the first Hall magnet <NUM> and the first Hall sensor <NUM>, and a relative position relationship between the second Hall magnet <NUM> and the second Hall sensor <NUM> change. The first Hall sensor <NUM> and the second Hall sensor <NUM> can detect the change of the magnetic field intensity, the real-time position of the anti-shake mover assembly <NUM> can be obtained according to the change of the magnetic field intensity, so as to realize the displacement control of the anti-shake mover assembly <NUM> and improve the accuracy of the anti-shake function. In order to reduce the interference of the Hall magnet to the stator assembly <NUM>, the actuator <NUM> may also include a shielding cover, the Hall magnet may be arranged in the shielding cover, and the shielding cover and the Hall magnet may both be connected to the seat <NUM> or the anti-shake mover assembly <NUM>. For example, in the embodiments of the present disclosure, the shielding cover may include a first shielding cover <NUM> and a second shielding cover <NUM>, and the first shielding cover <NUM> and the second shielding cover <NUM> are both connected to the second mounting base <NUM>. The first Hall magnet <NUM> may be arranged in the first shielding cover <NUM> and connected to the second mounting base <NUM>, and the second Hall magnet <NUM> may be arranged in the second shielding cover <NUM> and connected to the second mounting base <NUM>.

It should be noted that in the above embodiment, the actuator <NUM> including the first Hall magnet <NUM>, the second Hall magnet <NUM>, the first Hall sensor <NUM>, and the second Hall sensor <NUM> is taken as an example for illustration. In other embodiments, the actuator <NUM> may also include other numbers of Hall magnets and other numbers of Hall sensors, and the Hall sensors and the Hall magnets are arranged in a one-to-one correspondence. When the actuator <NUM> includes more than one Hall magnet, the polarity arrangement directions of the more than one Hall magnet may all be parallel to the first direction, and the extension directions of at least two of the Hall magnets are orthogonal to each other, so that they can detect the displacement of the anti-shake mover assembly <NUM> in the orthogonal directions, so as to obtain the coordinate position of the anti-shake mover assembly <NUM>. In the above embodiment, in order to detect the displacement of the anti-shake mover assembly <NUM> in the orthogonal directions, the technical solution is proposed, in which the polarity arrangement directions of the more than one Hall magnet can all be parallel to the first direction, and the extension directions of at least two of the Hall magnets are orthogonal to each other. In other embodiments, the polarity arrangement direction of each of the more than one Hall magnet included in the actuator <NUM> may be perpendicular to the first direction, and the polarity arrangement directions of at least two of the Hall magnets are perpendicular to each other, so that the displacement of the anti-shake mover assembly <NUM> can also be detected in the orthogonal directions. In the above embodiments, the Hall magnet connected to the second mounting base <NUM> and the Hall sensor connected to the seat <NUM> are taken as an example for illustration. In other embodiments, the Hall magnet may also be connected to the seat <NUM>. For example, the Hall magnet and the seat <NUM> are fixedly connected directly. Or, the Hall magnet and the seat <NUM> are fixedly connected indirectly. For example, the Hall magnet may be connected to the annular bracket <NUM>, the annular bracket <NUM> is connected to the seat <NUM>, and the Hall sensor is connected to the second mounting base <NUM>, which is not limited in the present disclosure.

In the above embodiments, the first acting member including the stator magnet, the second acting member including the focusing coil, and the third acting member including the anti-shake coil are taken as an example for illustration. For an embodiment in which the first acting member includes a stator coil, the second acting member includes a focusing magnet, and the third acting member includes an anti-shake magnet, the stator coil of the stator assembly <NUM> may be arranged on a side of the annular bracket <NUM> facing the focusing mover assembly <NUM> along the circumferential direction of the annular bracket <NUM>, the focusing magnet may be arranged on the outer side of the stator coil along the circumferential direction of the first mounting base <NUM>, and the anti-shake magnet may be arranged on the inner side of the stator coil along the circumferential direction of the second mounting base <NUM>. The focusing magnet may include an annular magnet or more than one block magnet arranged around the outer side of the stator coil, and the anti-shake mover assembly <NUM> may include more than one anti-shake magnet arranged around the inner side of the stator coil. Based on this, by reasonably setting the N pole and S pole of the focusing magnet, the N pole and S pole of the anti-shake magnet, and the current direction in the stator coil, the focusing mover assembly <NUM> can be pushed to move in the first direction to squeeze the fluid lens <NUM>, and the anti-shake mover assembly <NUM> can be pushed to move in the plane perpendicular to the first direction. In this embodiment, other structures of the focusing mover assembly <NUM> and other structures of the anti-shake mover assembly <NUM> can refer to the foregoing embodiments, and will not be repeated herein.

In each of the above embodiments, the seat <NUM> may include a cover <NUM> and a base plate <NUM> assembled with the cover <NUM>. The cover <NUM> may include a mounting cavity <NUM>, the stator assembly <NUM>, the focusing mover assembly <NUM>, and the anti-shake mover assembly <NUM> are arranged in the mounting cavity <NUM>, and the cover <NUM> may also be configured to be connected with the fluid lens <NUM>. The base plate <NUM> may be assembled with the cover <NUM> to seal an end of the mounting cavity <NUM>, and the base plate <NUM> may also be connected with the stator assembly <NUM> to achieve the fixation of the stator assembly <NUM>. For example, the base plate <NUM> may include a mounting post <NUM>, the annular bracket <NUM> of the stator assembly <NUM> may include a mounting hole, and the mounting post <NUM> may be assembled in the mounting hole, so as to realize the assembling of the base plate <NUM> and the stator assembly <NUM>. Of course, in other embodiments, it is also possible that the base plate <NUM> includes the mounting hole, and the annular bracket <NUM> of the stator assembly <NUM> includes the mounting post <NUM>, which is not limited in the present disclosure.

For example, the fluid lens <NUM> may be connected to the cover <NUM>, and the cover <NUM> may include more than one fixing stage <NUM> arranged on a side of the cover <NUM> facing away from the base plate <NUM>, and the more than one fixing stage <NUM> may be arranged along a circumferential direction of the mounting cavity <NUM>. The fixing stage <NUM> may be connected with the fixed frame <NUM> of the fluid lens <NUM> to realize the assembling of the fluid lens <NUM> and the seat <NUM>. Further, through the joint action of the more than one fixing stage <NUM>, the uniformity of the force applied to the fluid lens <NUM> can be improved, and the deformation of the fluid lens <NUM> itself due to its mounting can be avoided. The first lens <NUM> may be arranged adjacent to the base plate <NUM>. The base plate <NUM> includes a mounting groove <NUM>, and the Hall sensor interacting with the Hall magnet on the anti-shake mover assembly <NUM> may be arranged in the mounting groove <NUM>. Of course, when the anti-shake mover assembly <NUM> includes the Hall sensor, the Hall magnet and the corresponding shielding cover may be fixed by the mounting groove <NUM>, which may be specifically designed as required, and is not limited in the present disclosure. In order to supply power to the focusing coil <NUM> and the anti-shake coil, the base plate <NUM> may include a plastic lid (not shown) and a metal terminal (not shown) arranged to the plastic lid. The metal terminal may be in direct or indirect conduction with the focusing coil <NUM> and the anti-shake coil, so as to realize the power on or power off. Insulation may be achieved through the plastic lid to reduce the risk of short circuit. Both the mounting groove <NUM> and the mounting post <NUM> may be arranged on the plastic lid.

Claim 1:
An actuator (<NUM>) for a camera unit (<NUM>), comprising:
a seat (<NUM>) configured to be assembled with a first lens (<NUM>) and a fluid lens (<NUM>) of the camera unit (<NUM>);
a stator assembly (<NUM>) fixedly connected to the seat (<NUM>);
a focusing mover assembly (<NUM>) configured to be connected with the fluid lens (<NUM>); and
an anti-shake mover assembly (<NUM>) configured to be connected with the first lens (<NUM>),
wherein the focusing mover assembly (<NUM>) is configured to move along a first direction of the seat (<NUM>) by interacting with the stator assembly (<NUM>), for adjusting a curvature of the fluid lens (<NUM>), and the anti-shake mover assembly (<NUM>) is configured to translate in a plane perpendicular to the first direction by interacting with the stator assembly (<NUM>), for driving the first lens (<NUM>) to move.