CN117651894A - Lens module and imaging device - Google Patents

Abstract

A lens module (1) and an imaging apparatus. The lens module (1) comprises a plurality of lenses, at least one of the lenses is a liquid lens (13) and at least one of the lenses is a movable lens (12), a light-transmitting film (131) of the liquid lens (13) can deform under the action of external force and change the curvature of the light-transmitting film (131) through the flow of fluid, so that focusing or zooming is realized, and the movable lens (12) can move along the optical axis direction to realize focusing. The curvature change of the light-transmitting film (131) is used for increasing the zoom range of the lens module (1), improving the focusing efficiency and changing the distortion phenomenon of the lens. The focusing effect is achieved through the movable lens (12) and the matching of curvature change of the light-transmitting film (131) of the liquid lens (13), the problem of zoom range reduction caused by focusing and zooming by means of curvature change of the light-transmitting film (131) of the same liquid lens (13) is avoided, meanwhile, the problems of insufficient equipment space and reduced focusing efficiency caused by focusing and zooming by means of the movable lens (12) are avoided, and the focusing efficiency and the zoom range are further improved.

Description

Lens modules and imaging equipment Technical field

The present disclosure relates to the field of electronic technology, specifically to lens modules and imaging devices.

Background technique

The lens module involves zoom and focus functions during use. Among them, the zoom function can change the shooting focal length of the lens module to achieve distant or close-up shooting of the scene to be shot. The focus function enables clear imaging of the scene to be photographed.

In related technologies, the above-mentioned zoom function and focus function usually need to be realized by driving the lens in the lens module to move along the optical axis. However, the moving range of the lens is limited by the thickness of imaging devices such as mobile phones, resulting in a small zoom range and unable to achieve expectations. telephoto or macro shots. Moreover, the lens also needs to take into account the zoom and focus functions during movement, thus affecting both the zoom effect and the focus effect.

Contents of the invention

In view of this, embodiments of the present disclosure provide lens modules and imaging devices to solve technical problems in related technologies.

According to a first aspect of the embodiment of the present disclosure, a lens module is proposed, including a base frame and a plurality of lenses assembled on the base frame, and the plurality of lenses are arranged sequentially along the optical axis direction;

At least one of the plurality of lenses is a movable lens that can move along the optical axis direction to achieve focusing;

At least one of the plurality of lenses is a liquid lens, and the liquid lens includes a bracket and a light-transmitting film disposed on at least one side of the bracket. The bracket and the light-transmitting film surround a fluid containing cavity, and the The light-transmitting film can deform under the action of external force and the curvature of the light-transmitting film can be changed by the flow of fluid.

Optionally, one side of the bracket is provided with the light-transmitting film, and the other side of the bracket is provided with a lens; and/or,

The light-transmitting films are respectively provided on both sides of the bracket.

Optionally, the lens module further includes a first driving component for changing the curvature of the light-transmitting film; the first driving component includes a zoom driving member that can move along the optical axis direction. The driving member is provided with a light-transmitting port corresponding to the effective working part of the liquid lens, the zoom driving member is connected to the light-transmitting film, and the light-transmitting film includes an optically effective area facing the light-transmitting port, The zoom driving member is used to push and pull the light-transmitting film along the optical axis direction and deform the optically effective area.

Optionally, the thickness of the optically effective area is set non-uniformly.

Optionally, the zoom driving member is used to squeeze the light-transmitting film toward the inside of the liquid lens, and to bulge the optically effective area toward the outside of the liquid lens, at least part of the effective working portion. The thickness gradually decreases from its center to the edge; or,

The zoom driving member is used to pull the light-transmitting film toward the outside of the liquid lens and make the optically effective area recess toward the inside of the liquid lens. At least part of the thickness of the effective working portion is from its center to The edge direction gradually increases.

Optionally, the first driving assembly further includes a first power component capable of driving the zoom driving member to move along the optical axis direction;

The first power component includes a first magnet and a first coil, one of the first magnet and the first coil is provided on the bracket, and the other is provided on the zoom driving member to change the The magnetic field direction of the first coil drives the light-transmitting film to change the deformation direction.

Optionally, the bracket includes a sealing side wall, a mounting plate disposed on the periphery of the sealing side wall, and a connecting column disposed at a corner of the mounting plate; the light-transmitting film is disposed on an end of the sealing side wall. part, and encloses the fluid containing cavity with the sealing side wall; the connecting column extends along the optical axis direction;

The zoom driving member includes an annular abutment portion and a support body arranged around the side wall of the abutment portion. The cavity of the abutment portion forms the light-transmitting port, and the support body and the mounting plate are located where The support body is provided with a first escape opening corresponding to the position of the connecting column; the contact portion is connected to the light-transmitting film;

One of the first magnet and the first coil is disposed on a side of the mounting plate facing the supporting body, and the other is disposed on an inner side of the supporting body facing the mounting plate.

Optionally, the first driving assembly further includes a first elastic member, which is connected to the zoom driving member and the bracket respectively to balance the first magnet and the first coil to generate magnetism;

The first elastic member includes a spring body, a first connecting piece connected to one end of the spring body, and a second connecting piece connected to the other end of the spring body. The first connecting piece and the connecting post Connect, the second connecting piece is connected to the supporting body.

Optionally, the first driving assembly includes a plurality of first power components that can be controlled individually. The plurality of first power components are arranged at circumferential intervals around the bracket to drive the zoom driving member to drive the zoom driving member. The liquid lens moves deflectively relative to the optical axis.

Optionally, the lens module further includes a second driving component for driving the moving lens to move along the optical axis direction.

Optionally, the second driving assembly includes at least two independently controlled second power components to drive the moving lens to deflect movement relative to the optical axis.

Optionally, the second power component includes a second magnet and a second coil; one of the second magnet and the second coil is disposed on the outer wall of the moving lens, and the second magnet and the second coil are arranged on the outer wall of the moving lens. The other of the second coils is disposed on the base frame to drive the moving lens to move along the optical axis through the magnetic field formed by the second coil.

Optionally, the second power component includes at least one second elastic member; one end of the second elastic member is connected to the moving lens, and the other end of the second elastic member is connected to the base frame.

Optionally, the plurality of lenses include a liquid lens and a solid lens, and at least one of the liquid lens and the solid lens can move along the optical axis direction.

Optionally, the plurality of lenses include at least two liquid lenses;

The base frame includes a front end and a rear end arranged oppositely; from the front end to the rear end, the two liquid lenses and the solid lens are sequentially arranged along the optical axis direction; or,

The liquid lens, the solid lens and the liquid lens are arranged in sequence along the optical axis direction.

Optionally, the solid lens can move along the optical axis; or,

Both the solid lens and one of the liquid lenses can move along the optical axis; or,

Both the solid lens and the two liquid lenses can move along the optical axis direction.

Optionally, at least one of the plurality of lenses is used to implement a convex lens function, and at least another of the plurality of lenses is used to implement a concave lens function.

According to a second aspect of embodiments of the present disclosure, an imaging device is provided, including:

The main body of the equipment, including the optical system;

Any lens module described in the first aspect is installed on the object side of the optical system of the device body.

According to an embodiment of the present disclosure, the lens module includes a plurality of lenses. At least one of the plurality of lenses is a liquid lens and at least one is a moving lens. The light-transmitting film of the liquid lens can deform under the action of external force and pass through the flow of fluid. The curvature of the light-transmitting film is changed to achieve focusing or zooming, and the movable lens can move along the optical axis to achieve focusing. Using the curvature change of the light-transmitting film can help increase the zoom range of the lens module, improve focusing efficiency, and change lens distortion. By moving the lens, the focusing effect is matched with the curvature change of the light-transmitting film of the liquid lens. This avoids the problem of reducing the zoom range caused by relying on the curvature change of the light-transmitting film of the same liquid lens to achieve focus and zoom. At the same time, it avoids relying on movement. The problem of insufficient equipment space and reduced focus efficiency caused by the lens achieving focus and zoom has further improved the focus efficiency and zoom range.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a schematic cross-sectional structural diagram of a lens module in an exemplary embodiment of the present disclosure.

FIG. 2 is a schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

FIG. 3 is the second schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

Figure 4 is a third schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

FIG. 5 is the fourth schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

FIG. 6 is a fifth schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

FIG. 7 is a sixth schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

Figure 8 is a seventh schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

FIG. 9 is a schematic cross-sectional structural diagram of a lens module in another exemplary embodiment of the present disclosure.

FIG. 10 is a schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

FIG. 11 is a schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

Figure 12 is a schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

Figure 13 is an eleventh schematic cross-sectional structural diagram of a liquid lens in an exemplary embodiment of the present disclosure.

Figure 14 is a schematic diagram of the assembly structure of a liquid lens and a first driving component in an exemplary embodiment of the present disclosure.

FIG. 15 is an exploded structural diagram of a liquid lens and a first driving component in an exemplary embodiment of the present disclosure.

FIG. 16 is an exploded structural diagram of a lens module in an exemplary embodiment of the present disclosure.

Figure 17 is a schematic three-dimensional structural diagram of a lens module in an exemplary embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this disclosure.

The terminology used in the embodiments of the present disclosure is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be called second information, and similarly, the second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining."

For the purpose of simplicity and ease of understanding, the terms used in this article are "greater than" or "less than", "higher than" or "lower than" when characterizing size relationships. But for those skilled in the art, it can be understood that: the term "greater than" also covers the meaning of "greater than or equal to", and "less than" also covers the meaning of "less than or equal to"; the term "higher than" covers the meaning of "higher than or equal to". "The meaning of "less than" also covers the meaning of "less than or equal to".

The lens module involves zoom and focus functions during use. Among them, the zoom function can change the shooting focal length of the lens module to achieve distant or close-up shooting of the scene to be shot. The focus function enables clear imaging of the scene to be photographed. In related technologies, the above-mentioned zoom function and focus function usually need to be realized by driving the lens in the lens module to move along the optical axis. However, the moving range of the lens is limited by the thickness of imaging devices such as mobile phones, resulting in a small zoom range and unable to achieve expectations. telephoto or macro shots. Moreover, the lens also needs to take into account the zoom and focus functions during movement, thus affecting both the zoom effect and the focus effect.

The present disclosure provides a lens module. FIG. 1 is a schematic structural diagram of a lens module in an exemplary embodiment of the present disclosure. As shown in FIG. 1 , the lens module 1 includes a base frame 11 and a plurality of lenses assembled on the base frame 11 . The plurality of lenses are arranged in sequence along the optical axis direction. At least one of the plurality of lenses is a movable lens 12 that can move along the optical axis direction to achieve focusing. At least one of the plurality of lenses is a liquid lens 13. The liquid lens 13 includes a bracket 132 and a light-transmitting film 131 disposed on at least one side of the bracket 132. The bracket 132 and the light-transmitting film 131 surround a fluid containing cavity 133. The light-transmitting film 131 It can deform under the action of external force and change the curvature of the light-transmitting film 131 through the flow of fluid.

Since at least one of the plurality of lenses is the liquid lens 13 and at least one is the moving lens 12, the light-transmitting film 131 of the liquid lens 13 can deform under the action of external force and the curvature of the light-transmitting film 131 can be changed by the flow of fluid. , thereby changing the focal length of the liquid lens 13 to achieve focusing or zooming, and the movable lens 12 can move along the optical axis direction to achieve focusing. Utilizing the curvature change of the light-transmitting film 131 can help increase the zoom range of the lens module 1, improve focusing efficiency, and change lens distortion. By moving the lens 12 to achieve the coordination between the focusing effect and the curvature change of the light-transmitting film 131, the problem of reducing the zoom range caused by relying on the curvature change of the light-transmitting film 131 of the same liquid lens 13 for focusing and zooming is avoided. The problem of insufficient equipment space and reduced focusing efficiency caused by moving the lens 12 to achieve focusing and zooming further improves the focusing efficiency and zoom range.

In the above embodiment, the light-transmitting film 131 of the liquid lens 13 can deform under the action of external force and change the curvature of the light-transmitting film 131 through the flow of fluid. When the curvature of the light-transmitting film 131 changes, the incident light passes through The propagation effect of the liquid lens 13 also changes accordingly. That is, various expected lens effects can be obtained through the deformation of the light-transmitting film 131 of the liquid lens 13, thereby achieving corresponding focusing or zooming functions. The following is an exemplary description of the structural settings of the liquid lens 13:

In one embodiment, as shown in FIG. 2 , the liquid lens 13 includes a bracket 132 , a light-transmitting film 131 is provided on one side of the bracket 132 , and a lens 134 is provided on the other side of the bracket 132 to pass through the transparent film on one side of the liquid lens. The deformation of the light film 131 changes the curvature of the entire light-transmitting film 131, which helps to improve the convenience of controlling the curvature of the light-transmitting film 131.

Among them, as shown in Figures 2 to 4, the light-transmitting film 131 located on one side of the bracket 132 can include a flat initial state, a convex state protruding toward the outside of the liquid lens 13, and a concave state recessed toward the inside of the liquid lens 13. When When the light-transmitting film 131 is in a convex state, a convex lens effect can be obtained, and when the light-transmitting film 131 is in a concave state, a concave lens effect can be obtained. The lens 134 may refer to a fixed-form lens 134 whose shape does not change with the liquid flow of the liquid lens 13. The lens 134 may be set as a flat plane lens 134 according to the requirements, or may be set in a convex shape protruding from the flat position or relative to the flat position. A concave shape with a depressed position.

It should be noted that the base frame 11 may include a front end and a rear end arranged oppositely, the light-transmitting film 131 may be disposed on the side of the liquid lens 13 facing the front end, and the lens 134 may be disposed on the side facing the rear end. Alternatively, the light-transmitting film 131 may be disposed on the side of the liquid lens 13 facing the rear end, and the lens 134 may be disposed on the side of the liquid lens 13 facing the front end.

In another embodiment, as shown in FIG. 5 , the liquid lens 13 includes a bracket 132 , and light-transmitting films 131 are respectively provided on both sides of the bracket 132 . By disposing the light-transmitting films 131 on both sides of the bracket 132 , the curvatures of the two light-transmitting films 131 of the liquid lens 13 can be adjusted in two opposite directions along the optical axis, thereby improving the flexibility of the curvature change of the light-transmitting films 131 , the zoom range when using the liquid lens 13 to achieve zooming, and the focusing efficiency when using the liquid lens 13 to achieve focusing.

Similarly, as shown in FIGS. 5 to 8 , the light-transmitting films 131 located on both sides of the bracket 132 can include a flat initial state, a convex state protruding toward the outside of the liquid lens 13 , and a concave state that is concave toward the inside of the liquid lens 13 . . As shown in FIG. 6 , the light-transmitting films 131 located on both sides of the bracket 132 are in a convex state protruding toward the outside of the liquid lens 13 . At this time, the liquid lens 13 can be used as a convex lens. As shown in FIG. 7 , the light-transmitting films 131 located on both sides of the bracket 132 are in a concave state protruding toward the inside of the liquid lens 13 . At this time, the liquid lens 13 can be used as a concave lens. As shown in Figure 8, the light-transmitting film 131 located on one side of the bracket 132 is in a convex state protruding toward the outside of the liquid lens 13, and the light-transmitting film 131 located on the other side of the bracket 132 is in a concave state protruding toward the inside of the liquid lens 13. At this time, the liquid lens 13 may have the functions of a convex lens and a concave lens at the same time.

In some embodiments, as shown in FIG. 9 , the lens module 1 further includes a first driving component 14 for changing the curvature of the light-transmitting film 131 . The first driving component 14 includes a zoom driving member 141 that can move along the optical axis direction. The zoom driving member 141 is provided with a light-transmitting port 1414. The zoom driving member 141 is connected to the light-transmitting film 131. The light-transmitting film 131 includes a facing light-transmitting film. In the optically effective area 1311 of the port 1414, the zoom driving member 141 is used to push and pull the light-transmitting film 131 along the optical axis direction and deform the optically effective area 1311. The zoom driving member 141 of the first driving assembly 14 can drive part of the structure of the light-transmitting film 131 to move along the optical axis, so that the fluid in the fluid containing cavity 133 flows with the extrusion of the light-transmitting film 131, and finally the optically effective area is 1311 produces corresponding deformations. Among them, the light-transmitting opening 1414 defines the optically effective area 1311, and the area of the light-transmitting opening 1414 determines the area of the optically effective area 1311. The light-transmitting opening 1414 includes, but is not limited to, a circular light-transmitting opening 1414 .

In some embodiments, the liquid lens 13 includes a bracket 132 with light-transmitting films 131 provided on both sides of the bracket 132. The lens module 1 includes two sets of the above-mentioned first driving components 14 and one set of zoom driving parts of the first driving component 14. 141 drives the light-transmitting film 131 located on the side of the bracket 132 close to the front end of the base frame 11 to deform, thereby changing the curvature of the light-transmitting film 131 on this side. The zoom driving member 141 of another set of first driving assemblies 14 drives the light-transmitting film 131 located on the side of the bracket 132 near the rear end of the base frame 11 to deform, thereby changing the curvature of the light-transmitting film 131 on that side. The two sets of first driving components can be independently controlled, so that the curvature changes of the light-transmitting films 131 located on both sides of the bracket 132 can be independently controlled.

In some embodiments, as shown in FIGS. 10 and 11 , the thickness of the optically effective area 1311 is set non-uniformly. The optically effective area 1311 with uneven thickness makes the light-transmitting film 131 aspherical in use. Compared with a spherical lens, the problem of photo distortion can be solved, especially for the current distortion problem of ultra-wide-angle photos, and can be further improved. The large field of view of the lens avoids obvious distortion problems at the edges, improving the photography effect.

The light-transmitting film 131 can be disposed on one or both sides of the bracket 132. The thickness of the optically effective area 1311 of the light-transmitting film 131 toward the front end of the base frame 11 can be non-uniformly provided, or it can be disposed toward the rear end of the base frame 11. The thickness of the optically effective area 1311 of the film 131 is non-uniformly arranged, and the thickness of the optically effective area 1311 of the light-transmitting film 131 toward the front end and the rear end of the base frame 11 can also be arranged non-uniformly. When the position of the light-transmitting film 131 matched with the zoom driving member 141 moves along the optical axis toward the inside of the liquid lens 13, the optically effective area 1311 of the light-transmitting film 131 protrudes toward the outside of the liquid lens 13 and can be used to implement the convex lens function. When the position of the light-transmitting film 131 coupled with the zoom driver 141 moves along the optical axis toward the outside of the liquid lens 13, the optically effective area 1311 of the light-transmitting film 131 is recessed toward the inside of the liquid lens 13, which can be used to implement a concave lens function. The above-mentioned optically effective area 1311 may be thin in the middle and thick on both sides or thick in the middle and thin on both sides. For the light-transmitting film 131 of the same material, when subjected to the same extrusion force of the fluid, the thin parts are more likely to undergo greater mechanical deformation, resulting in greater changes in optical properties.

In one embodiment, as shown in FIG. 12 , the zoom driving member 141 is used to squeeze the light-transmitting film 131 toward the inside of the liquid lens 13 and to make the optically effective area 1311 bulge toward the outside of the liquid lens 13 to achieve the function of a convex lens. , the thickness of at least part of the effective working part can gradually decrease from the center to the edge. Or, in another embodiment, as shown in FIG. 13 , the zoom driving member 141 is used to pull the light-transmitting film 131 toward the outside of the liquid lens 13 and to recess the optically effective area 1311 toward the inside of the liquid lens 13 to achieve a concave lens. Function, the thickness of at least part of the effective working part gradually increases from the center to the edge. Optionally, the thickness of the effective working part first gradually increases from the center to the edge, and then gradually decreases.

In some embodiments, as shown in FIGS. 14 and 15 , the first driving assembly 14 further includes a first power component capable of driving the zoom driving member 141 to move along the optical axis direction. The first power component includes a first magnet 142 and a first coil 143. One of the first magnet 142 and the first coil 143 is provided on the bracket 132, and the other is provided on the zoom driving member 141. The first coil 143 is powered by the first The magnetic field force of the magnet 142 moves along the optical axis direction, thereby driving the zoom driving member 141 to drive the light-transmitting film 131 along the optical axis direction, causing the light-transmitting film 131 to deform; and by changing the magnetic field direction of the first coil 143, the light-transmitting film 131 can be deformed. The light-transmitting film 131 is driven to change the deformation direction. The cooperation of the first magnet 142 and the first coil 143 realizes electromagnetic driving of the zoom driving member 141, which improves the control convenience and the accuracy of motion control of the zoom driving member 141.

It should be noted that the first power component may also be one or more of other driving methods such as piezoelectric driving components, SMA driving components, and magnetic driving components. The following takes the first power component including the first magnet 142 and the first coil 143 as an example to illustrate the structural arrangement and connection method of the liquid lens.

In some embodiments, the bracket 132 includes a sealing side wall 1321, a mounting plate 1322 disposed around the sealing side wall 1321, and a connecting post 1323 disposed at the corner of the mounting plate 1322. The light-transmitting film 131 is disposed at the end of the sealing side wall 1321 and forms a fluid containing cavity 133 with the sealing side wall 1321. The connecting column 1323 extends along the optical axis direction. The zoom driving member 141 includes an annular abutment portion 1411 and a support body 1413 arranged around the side wall of the abutment portion 1411 . The cavity of the contact portion 1411 forms a light-transmitting opening 1414. The support body 1413 and the mounting plate 1322 are arranged oppositely in the optical axis direction. The support body 1413 is provided with a first escape opening 1412 corresponding to the position of the connecting column 1323. The contact portion 1411 Connected to the light-transmitting film 131. One of the first magnet 142 and the first coil 143 is disposed on the side of the mounting plate 1322 facing the supporting body 1413 , and the other is disposed on the inner side of the supporting body 1413 facing the mounting plate 1322 .

Taking the first magnet 142 being disposed on the mounting plate 1322 and the first coil 143 being disposed on the inner side of the support body 1413 facing the mounting plate 1322 as an example, through the above structural arrangement, when a current is passed through the first coil 143, a connection with the first coil 143 can be formed. The magnet 142 faces a magnetic field with the same or different magnetic properties on one side of the first coil 143, and the magnetic field force between the first magnet 142 and the first coil 143 can be used to drive the zoom driving member 141 to move along the optical axis direction. The light-transmitting film 131 is connected to the abutting portion 1411 of the zoom driving member 141. The local extrusion of the light-transmitting film 131 causes the fluid in the fluid containing cavity 133 to flow with the extrusion of the light-transmitting film 131, and finally the optically effective area 1311 produce corresponding deformations. The incident light can enter the liquid lens 13 through the light transmission port 1414 to avoid the structure of the zoom driving member 141 from interfering with the structure of light propagation.

In addition, the support body 1413 of the zoom driving member 141 is also provided with a first escape opening 1412 corresponding to the position of the connecting column 1323 to provide assembly space for the connecting column 1323 and to prevent the connecting column 1323 from facing the lens module while ensuring the function of the supporting body 1413. Radial dimensions occupied by group 1.

In the above embodiment, as shown in FIG. 15 , the first driving component 14 may also include a first elastic member 144 , which is connected to the zoom driving member 141 and the bracket 132 respectively to balance the first magnet 142 and the first elastic member 144 . A coil 143 generates magnetic force. The first elastic member 144 includes a spring main body 1441, a first connecting piece 1442 connected to one end of the spring main body 1441, and a second connecting piece 1443 connected to the other end of the spring main body 1441. The first connecting piece 1442 is connected to the connecting post 1323. The second connecting piece 1443 is connected to the supporting body 1413 . The first elastic member 144 can buffer the magnetic field force between the first coil 143 and the first magnet 142 to prevent excessive pulling of the light-transmitting film 131 due to excessive or too small force on one side.

The spring main body 1441 may be a spring wire extending radially along the lens module 1. The first connecting piece 1442 provided at one end of the spring wire is connected to the connecting post 1323, and the second connecting piece 1443 provided at the other end of the spring wire is connected to the connecting post 1323. The support body 1413 is connected to achieve a balance of magnetic force generated by the first magnet 142 and the first coil 143 through the tension and compression of the spring wire.

In the above embodiment, the first driving assembly 14 may include a plurality of first power components that can be individually controlled. The plurality of first power components are arranged at circumferential intervals around the bracket 132 to drive the zoom driving member 141 to drive the liquid lens 13 relative to each other. Deflection movement on the optical axis. When the power generated by two or more of the first power components is different, different driving forces can be generated at different positions of the zoom driving member 141, so that the zoom driving member 141 drives the liquid lens 13 to deflect relative to the optical axis to achieve prevention. jitter function.

Taking the first power component including the first magnet 142 and the first coil 143 as an example, the first magnet 142 can be disposed on the mounting plate 1322, and the first coil 143 can be disposed on the inner side of the support body 1413 facing the mounting plate 1322. The first coil 143 It may include at least two first sub-coils 1431 distributed along the circumferential direction of the support body 1413. The at least two first sub-coils 1431 receive different electromagnetic control signals to drive the zoom driving member 141 to deflect relative to the optical axis, thereby achieving corresponding anti-shake function.

In some embodiments, as shown in Figure 16, the lens module 1 also includes a second driving component 15 for driving the movable lens 12 to move along the optical axis direction. The second driving component 15 drives the movable lens 12 to move along the optical axis direction. Can be used to achieve focus or zoom functions.

In the above embodiment, the second driving assembly 15 includes at least two independently controlled second power components to drive the moving lens 12 to deflect movement relative to the optical axis. When the power generated by two or more of the first power components is different, different driving forces can be generated at different positions of the moving lens 12, thereby driving the moving lens 12 to deflect relative to the optical axis to achieve the anti-shake function.

Taking the second power component including the second magnet 152 and the second coil 153 as an example, one of the second magnet 152 and the second coil 153 is disposed on the outer wall of the moving lens 12, and one of the second magnet 152 and the second coil 153 The other one is provided on the base frame 11 to drive the moving lens to move along the optical axis with the magnetic field formed by the second coil 153 . The second magnet 152 may be disposed on the base frame 11 , and the second coil 153 may be disposed on the outer wall of the moving lens 12 . The second coil 153 may include at least two second sub-coils distributed along the circumferential direction of the moving lens 12 . At least two The second sub-coil receives different electromagnetic control signals to drive the movable lens 12 to deflect relative to the optical axis, thereby achieving corresponding anti-shake functions.

In some embodiments, the second power component includes at least one second elastic member 151. One end of the second elastic member 151 is connected to the moving lens 12, and the other end of the second elastic member 151 is connected to the base frame 11 to balance the second elastic member 151. The magnet 152 and the second coil 153 generate magnetic force. The second elastic member 151 includes a spring body 1511, a connecting end 1513 connected to one end of the spring body 1511, and a connecting end 1513 connected to the other end of the spring body 1511. The connecting end 1513 is connected to the outer wall of the moving lens 12, and the third connection The piece 1512 is connected to the base frame 11 . The second elastic member 151 can buffer the magnetic field force between the second coil 153 and the second magnet 152 to prevent excessive pulling of the moving lens 12 due to excessive or too small force on one side. Wherein, the above-mentioned spring body 1511 may be a spring wire extending along the radial direction of the lens module 1 .

In the above embodiment, the second power component may include two groups of second elastic members 151 , each group including a plurality of second elastic members 151 , and the first group of second elastic members 151 is disposed on the moving lens 12 near the front end of the base frame 11 On one side, the second group of second elastic members 151 is disposed on the side of the moving lens 12 close to the rear end of the base frame 11 . The base frame 11 may include a lens barrel 111 and a base 112 located at the bottom of the lens barrel 111, wherein one end of each second elastic member 151 in the first group is connected to the moving lens 12, and the other end of the second elastic member 151 is connected to the lens. Barrel 111 is connected. One end of each second elastic member 151 in the second group is connected to the moving lens 12 , and the other end of the second elastic member 151 is connected to the base 112 .

It should be noted that the second power component may also include one or more of other driving methods such as piezoelectric driving components, SMA driving components, and magnetic driving components to achieve the desired driving effect.

In the above embodiment, the plurality of lenses may include a liquid lens 13 and a solid lens 16, and at least one of the liquid lens 13 and the solid lens 16 can move along the optical axis direction. The above-mentioned movable lens 12 that can move along the optical axis can realize the focusing function through movement, and can also assist the zoom function through movement. For example, only the solid lens 16 among the plurality of lenses can move along the optical axis, or at least one liquid lens 13 and at least one solid lens 16 among the plurality of lenses can move along the optical axis, or the liquid lens 13 among the plurality of lenses can move along the optical axis. The optical axis moves.

In some embodiments, the plurality of lenses may include at least two liquid lenses 13 . The base frame 11 includes a front end and a rear end arranged oppositely. From the front end to the rear end, two liquid lenses 13 and a solid lens 16 are arranged in sequence along the optical axis direction. Alternatively, the liquid lens 13, the solid lens 16, and the liquid lens 13 are arranged in sequence along the optical axis direction.

In some embodiments, solid lens 16 is movable along the optical axis. Alternatively, both the solid lens 16 and the one liquid lens 13 can move along the optical axis direction. Alternatively, both the solid lens 16 and the two liquid lenses 13 can move in the optical axis direction.

The lens barrel 111 may include a first barrel and a second barrel that are sequentially arranged along the optical axis direction and detachably connected. The first barrel may be located at the front end, and the second barrel may be located at the rear end. The plurality of lenses may include two liquid lenses 13 and one solid lens. The solid lenses and the two liquid lenses 13 are movable lenses that can move along the optical axis direction. One of the two movable lenses can be installed on the first barrel, and both The other of the two movable lenses is installed on the second barrel, and the two movable lenses can be arranged adjacent to each other in the optical axis direction, which can facilitate the assembly and disassembly of the lens module. Optionally, two liquid lenses 13 are installed on the first cylinder, and the solid lens is installed on the second cylinder.

In one embodiment, as shown in FIGS. 1 , 16 and 17 , the multiple lenses may include two liquid lenses 13 and one solid lens 16 , and the two liquid lenses 13 and the solid lens 16 are arranged in sequence along the optical axis direction. Among them, the liquid lens 13 close to the front end of the base frame 11 can be mainly used to implement the zoom function. The liquid lens 13 and the solid lens 16 located in the middle can serve as the movable lens 12. The liquid lens 13 located in the middle can not only include the zoom function but also be able to move along the optical axis to achieve the focusing function. The solid lens 16 can move along the optical axis to achieve focusing. Function. That is, the lens module 1 includes two sets of first driving assemblies 14 and two sets of second driving assemblies 15 . The first power component and the zoom driving member 141 of the first set of first driving assemblies 14 are matched with a lens located near the front end of the base frame 11 The liquid lens 13 realizes the zoom function by driving the light-transmitting film 131 of the liquid lens 13 to deform. The second group of first driving components 14 and the first group of second driving components 15 cooperate with the liquid lens 13 in the middle. The first power component and the zoom driving member 141 of the first driving component 14 drive the light transmission of the middle liquid lens 13 The membrane 131 deforms to achieve the zoom function, and the second power component of the second driving assembly 15 drives the liquid lens 13 to move along the optical axis to achieve the focusing function. The second group of second driving components 15 cooperates with the solid lens 16 to drive the solid lens 16 to move along the optical axis to achieve the focusing function. The above lens setting scheme can realize the main zoom function of the lens module 1 through the liquid lens 13 close to the front end of the base frame 11, and realize the main focus function through the liquid lens 13 and the solid lens located in the middle, avoiding the need to use the same liquid lens 13 for both. The impact of zoom and focus effects on the zoom range and focus effect.

It should be noted that the liquid lens 13 close to the front end of the base frame 11 is mainly used to achieve the zoom function through the deformation of the light-transmitting film 131. It can also produce a focusing effect through the deformation of the light-transmitting film 131. In specific focusing scenarios, it can Choose the appropriate lens according to your needs to achieve zoom and focus effects.

In some embodiments, at least one of the plurality of lenses is used to implement a convex lens function, and at least another of the plurality of lenses is used to implement a concave lens function to ensure the convenience of realizing the zoom and focus functions. Among them, the lens used to realize the function of a convex lens can be a liquid lens 13 with the light-transmitting film 131 in a convex state, or it can be a solid lens 16 in the form of a convex lens. Similarly, the lens used to realize the function of a concave lens can be a liquid lens 13 with the light-transmitting film 131 in a concave state, or it can be a solid lens 16 in the form of a concave lens. Further, a lens used to implement the convex lens function can be located on the side close to the front end of the base frame 11, and a lens used to implement the concave lens function can be located between the lens and the rear end of the convex lens function, in order to obtain better focus and zoom. Effect.

The present disclosure further provides an imaging device, which includes a device main body and the above-mentioned lens module 1. The main body of the device includes the optical system. The lens module 1 is installed on the object side of the optical system of the device body.

Since the lens module 1 includes multiple lenses, at least one of the multiple lenses is a liquid lens 13 and at least one is a movable lens 12. The light-transmitting film 131 of the liquid lens 13 can deform under the action of external force and be deformed by the flow of fluid. The curvature of the light-transmitting film 131 changes, thereby changing the focal length of the liquid lens 13 to achieve focusing or zooming, and the movable lens 12 can move along the optical axis direction to achieve focusing. Utilizing the curvature change of the light-transmitting film 131 can help increase the zoom range of the lens module 1, improve focusing efficiency, and change lens distortion. By moving the lens 12, the focusing effect is matched with the curvature change of the light-transmitting film 131 of the liquid lens 13, thereby avoiding the problem of reducing the zoom range caused by relying on the curvature change of the light-transmitting film 131 of the same liquid lens 13 to achieve focusing and zooming. At the same time, it avoids the problem of insufficient equipment space and reduced focusing efficiency caused by relying on the moving lens 12 to achieve focusing and zooming, and further improves the focusing efficiency and zoom range.

It should be noted that the above-mentioned imaging device may be a mobile phone, a tablet computer, a vehicle-mounted terminal, a wearable device, a camera, etc., and this disclosure is not limited thereto.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. The present disclosure is intended to cover any variations, uses, or adaptations of the disclosure that follow the general principles of the disclosure and include common common sense or customary technical means in the technical field that are not disclosed in the disclosure. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the appended claims.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. The terms "comprises," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus including a list of elements includes not only those elements but also others not expressly listed elements, or elements inherent to such process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or device that includes the stated element.

The methods and devices provided by the embodiments of the present disclosure have been introduced in detail above. Specific examples are used in this article to illustrate the principles and implementations of the present disclosure. The description of the above embodiments is only used to help understand the methods and methods of the present disclosure. The core idea; at the same time, for those of ordinary skill in the art, there will be changes in the specific implementation and application scope based on the ideas of this disclosure. In summary, the content of this description should not be understood as a limitation of this disclosure. .

Claims (18)

A lens module, characterized in that it includes a base frame and a plurality of lenses assembled on the base frame, and the plurality of lenses are arranged in sequence along the optical axis direction; At least one of the plurality of lenses is a movable lens that can move along the optical axis direction to achieve focusing; At least one of the plurality of lenses is a liquid lens, and the liquid lens includes a bracket and a light-transmitting film disposed on at least one side of the bracket. The bracket and the light-transmitting film surround a fluid containing cavity, and the The light-transmitting film can deform under the action of external force and the curvature of the light-transmitting film can be changed by the flow of fluid. The lens module according to claim 1, wherein the light-transmitting film is provided on one side of the bracket, and a lens is provided on the other side of the bracket; and/or, The light-transmitting films are respectively provided on both sides of the bracket. The lens module according to claim 1, further comprising a first driving component for changing the curvature of the light-transmitting film; the first driving component includes a zoom lens capable of moving along the optical axis direction. A driving member, the zoom driving member is provided with a light-transmitting port, the zoom driving member is connected to the light-transmitting film, the light-transmitting film includes an optically effective area facing the light-transmitting port, the zoom driving member The component is used to push and pull the light-transmitting film along the optical axis direction and deform the optically effective area. The lens module according to claim 3, wherein the thickness of the optically effective area is non-uniform. The lens module according to claim 4, wherein the zoom driving member is used to squeeze the light-transmitting film toward the inside of the liquid lens and move the optically effective area toward the inside of the liquid lens. The outer side is convex, and the thickness of at least part of the effective working part gradually decreases from its center to the edge; or, The zoom driving member is used to pull the light-transmitting film toward the outside of the liquid lens and make the optically effective area recess toward the inside of the liquid lens. At least part of the thickness of the effective working portion is from its center to The edge direction gradually increases. The lens module according to claim 3, wherein the first driving component further includes a first power component capable of driving the zoom driving member to move along the optical axis; The first power component includes a first magnet and a first coil, one of the first magnet and the first coil is provided on the bracket, and the other is provided on the zoom driving member to change the The magnetic field direction of the first coil drives the light-transmitting film to change the deformation direction. The lens module according to claim 6, wherein the bracket includes a sealed side wall, a mounting plate provided on the periphery of the sealed side wall, and a connecting column provided at a corner of the mounting plate; The optical film is disposed at the end of the sealing side wall, and forms the fluid containing cavity with the sealing side wall; the connecting column extends along the optical axis direction; The zoom driving member includes an annular abutment portion and a support body arranged around the side wall of the abutment portion. The cavity of the abutment portion forms the light-transmitting port, and the support body and the mounting plate are located where The support body is provided with a first escape opening corresponding to the position of the connecting column; the contact portion is connected to the light-transmitting film; One of the first magnet and the first coil is disposed on the side of the mounting plate facing the supporting body, and the other is disposed on the inner side of the supporting body facing the mounting plate. The lens module according to claim 7, characterized in that the first driving component further includes a first elastic member, the first elastic member is connected to the zoom driving member and the bracket respectively to balance the the magnetic force generated by the first magnet and the first coil; The first elastic member includes a spring body, a first connecting piece connected to one end of the spring body, and a second connecting piece connected to the other end of the spring body. The first connecting piece and the connecting post Connect, the second connecting piece is connected to the supporting body. The lens module according to claim 6, wherein the first driving assembly includes a plurality of first power components that can be individually controlled, and the plurality of first power components are arranged at intervals around the circumference of the bracket. , to drive the zoom driving member to drive the liquid lens to deflect movement relative to the optical axis. The lens module according to claim 1, further comprising a second driving component for driving the moving lens to move along the optical axis direction. The lens module according to claim 10, wherein the second driving component includes at least two independently controlled second power components to drive the moving lens to deflect movement relative to the optical axis. The lens module according to claim 11, wherein the second power component includes a second magnet and a second coil; one of the second magnet and the second coil is disposed on the moving lens. The other one of the second magnet and the second coil is disposed on the base frame to drive the moving lens to move along the optical axis through the magnetic field formed by the second coil. The lens module according to claim 12, wherein the second power component includes at least one second elastic member; one end of the second elastic member is connected to the moving lens, and the second elastic member The other end is connected to the base frame. The lens module according to claim 1, wherein the plurality of lenses include a liquid lens and a solid lens, and at least one of the liquid lens and the solid lens can move along the optical axis direction. The lens module according to claim 14, wherein the plurality of lenses include at least two liquid lenses; The base frame includes a front end and a rear end arranged oppositely; from the front end to the rear end, two of the liquid lenses and the solid lens are arranged sequentially along the direction of the optical axis; or, The liquid lens, the solid lens and the liquid lens are arranged in sequence along the optical axis direction. The lens module according to claim 15, wherein the solid lens can move along the optical axis; or, Both the solid lens and one of the liquid lenses can move along the optical axis; or, Both the solid lens and the two liquid lenses can move along the optical axis direction. The lens module according to claim 1, wherein at least one of the plurality of lenses is used to implement a convex lens function, and at least another of the plurality of lenses is used to implement a concave lens function. An imaging device, characterized by including: The main body of the equipment, including the optical system; The lens module according to any one of claims 1 to 17 is installed on the object side of the optical system of the device body.