WO2018112883A1

WO2018112883A1 - Optical lens, camera module and terminal

Info

Publication number: WO2018112883A1
Application number: PCT/CN2016/111708
Authority: WO
Inventors: 安智
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2016-12-23
Filing date: 2016-12-23
Publication date: 2018-06-28
Also published as: CN108064350A

Abstract

An optical lens (10), a camera module (100) and a terminal (200), comprising: at least two transparent substrates (11) arranged at intervals in a thickness direction; a flexible lens (13) is provided between two adjacent substrates (11); an optical axis of the flexible lens (13) is provided in the thickness direction of the substrate (11); the substrates (11) located at two sides of the flexible lens (13) are respectively provided with a transparent first conducting layer (111) and a second conducting layer (113); the first conducting layer (111) comprises a plurality of electrodes (17) arranged at intervals; the plurality of electrodes (17) separately receives a driving electrode to generate independent electric fields (E) between the first conducting layer (111) and the second conducting layer (113); the electric field (E) generated by each electrode (17) acts on a light-transmissive region of the flexible lens (13) to trigger each light-transmissive region to generate corresponding curvature deformation according to the change of the electric field (E). The optical lens (10) has a simple structure and high stability, and is less affected by the environment.

Description

Optical lens, camera module and terminal

Technical field

The present invention relates to the field of optical imaging, and in particular, to an optical lens, a camera module, and a terminal to which the camera module is applied.

Background technique

At present, camera modules are basically integrated in mobile phones, tablet computers and other terminal products, providing users with convenient image and video shooting experience. The conventional camera module adopts an optical lens group combined with a voice coil motor actuator to move the optical lens lens by mechanical stretching, so that the focus position falls on the imaging surface of the image sensor to achieve clear focus imaging. However, the conventional focusing mode of the optical lens assembly in combination with the voice coil motor actuator makes the size of the camera module too large, and the voice coil motor device has a complicated structure and a slow response, and it is difficult to achieve optical zoom in a limited internal space of the terminal product.

Summary of the invention

In view of the above problems in the prior art, embodiments of the present invention provide an optical lens, a camera module, and a terminal to reduce the thickness of the camera module and improve the focus response speed and reliability of the camera module.

An optical lens comprising:

At least two transparent substrates arranged in a thickness direction, a flexible lens is disposed between the two adjacent substrates, and an optical axis of the flexible lens is disposed along a thickness direction of the substrate;

A transparent first conductive layer and a second conductive layer are respectively disposed on the substrates on both sides of the flexible lens, and the first conductive layer includes a plurality of electrodes arranged at intervals;

The plurality of electrodes receive a driving voltage to generate mutually independent electric fields between the first conductive layer and the second conductive layer;

An electric field generated by each of the electrodes acts on a light transmissive region of the flexible lens to trigger each of the light transmissive regions to produce a corresponding curvature deformation according to a change in the electric field.

A camera module includes an image sensor and an optical lens, the optical lens including at least two a transparent substrate arranged in a thickness direction, a flexible lens is disposed between two adjacent substrates, and an optical axis of the flexible lens is disposed along a thickness direction of the substrate;

A transparent first conductive layer and a second conductive layer are respectively disposed on the substrates on both sides of the flexible lens, and the first conductive layer includes a plurality of electrodes arranged at intervals, the plurality of electrodes receiving a driving voltage Creating mutually independent electric fields between the first conductive layer and the second conductive layer;

The image sensor is disposed on a substrate at one end of the optical lens, and the optical lens is configured to perform imaging focus adjustment by triggering a curvature deformation of a light transmitting region of the flexible lens under the action of the electric field, and An object image corresponding to a focal length is formed on the image sensor.

A terminal includes a camera module, the camera module includes an image sensor and an optical lens, and the optical lens includes at least two transparent substrates arranged at intervals in a thickness direction, and between two adjacent substrates are disposed a flexible lens, the optical axis of the flexible lens being disposed along a thickness direction of the substrate;

A transparent first conductive layer and a second conductive layer are respectively disposed on the substrates on both sides of the flexible lens, and the first conductive layer includes a plurality of electrodes arranged at intervals, and the plurality of electrodes respectively receive driving voltages And generating mutually independent electric fields between the first conductive layer and the second conductive layer;

The optical lens is provided with at least one flexible lens disposed between at least two transparent substrates spaced apart in the thickness direction, and a transparent first conductive layer and a second conductive layer are disposed on the substrate on both sides of each of the flexible lenses And generating mutually independent electric fields between the first conductive layer and the second conductive layer by the plurality of spaced-arranged electrodes to trigger a change of the light-transmitting region of the flexible lens according to the electric field Corresponding curvature deformation is generated, so that the adjustment of the imaging focal length can be accurately realized, and the focus response speed and reliability of the optical lens can be effectively improved. At the same time, since the conventional voice coil motor brake is not needed, the thickness and volume of the camera module can be effectively reduced, which is advantageous for further reducing the thickness of the terminal to which the camera module is applied.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following description will be made on the embodiments. The drawings to be used are briefly introduced.

1 is a first schematic structural diagram of a camera module according to an embodiment of the present invention;

2 is a second schematic structural diagram of a camera module according to an embodiment of the present invention;

3 is a third schematic structural diagram of a camera module according to an embodiment of the present invention;

4 is a schematic diagram of electric field intensity distribution of a camera module according to an embodiment of the present invention;

FIG. 5 is a fourth schematic structural diagram of a camera module according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of a first structure of a terminal according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a second structure of a terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 , in an embodiment of the present invention, a camera module 100 is provided, including an optical lens 10 and an image sensor 30. The optical lens 10 includes:

At least two transparent substrates 11 arranged at intervals in the thickness direction, between the two adjacent substrates, a flexible lens 13 is disposed, and an optical axis of the flexible lens 13 is disposed along a thickness direction of the substrate 11;

A transparent first conductive layer 111 and a second conductive layer 113 are respectively disposed on the substrates on both sides of the flexible lens 13, and the first conductive layer 111 includes a plurality of electrodes 17 arranged at intervals; having a first conductive The substrate 11 of the layer 111 is provided with a lens driver 15;

The lens driver 15 is configured to respectively supply driving voltages to the plurality of electrodes 17, and the plurality of electrodes 17 receive the driving voltage to generate between the first conductive layer 111 and the second conductive layer 113 Independent electric field E;

An electric field E generated by each of the electrodes 17 acts on a light transmitting region (not shown) of the flexible lens 13 to trigger each of the light transmitting regions to generate a corresponding curvature deformation according to the change of the electric field E.

The image sensor 30 is disposed on the substrate 11 at one end of the optical lens 10, the optical The lens 10 is configured to perform imaging focus adjustment by triggering a curvature deformation of the light-transmitting region of the flexible lens 13 under the action of the electric field E, and form an object image of a corresponding focal length on the image sensor 30.

In the embodiment, the lens driver 15 is disposed on the same surface of the substrate 11 on which the first conductive layer 111 and the plurality of electrodes 17 are located in a COG (Chip On Glass) package. The image sensor 30 is disposed on the substrate 11 at one end of the optical lens 10 in a COG package, and the first conductive layer 111, the lens driver 15 and the plurality of electrodes 17 on the substrate 11 at one end of the optical lens 10 It is disposed on the same surface of the substrate 11. It can be understood that the plurality of electrodes 17 may be formed directly on the surface of the substrate 11 or formed on the surface of the substrate 11 through the conductive film 115.

The image sensor 30 and the lens driver 15 may be connected to a signal processing module of a terminal (such as a smart phone, a tablet computer, etc.) to which the camera module 100 is applied through a Flexible Printed Circuit (FPC) 50 ( The image processing module transmits an image formed by the image sensor to the signal processing module, and the signal processing module can control the lens driver 15 to adjust and provide the plurality of electrodes according to the quality of the image. The driving voltage of 17 is such that the curvature deformation state of the flexible lens 13 is feedback-controlled according to the imaging quality.

In the present embodiment, the flexible lens 13 is made of a deformable piezoelectric material or an electric field responsive polymer polymer rheology material. For example, the flexible lens may be, but not limited to, a conductive polymer, a carbon nanotube, a Silicone, a hydrogel, a polyvinyl alcohol gel, a lead zirconate titanate, a poly Made of materials such as polyvinylidene fluoride (Polyvinylidene Fluoride). The first conductive layer 111 and the second conductive layer 113 are respectively formed on the substrate 11 by a deposition process by one or more materials such as indium tin oxide, nano silver or a metal mesh. The at least two substrates 11 are all rigid substrates.

A transparent conductive line (not shown) is further disposed on the first conductive layer 111, and the lens driver 15 is connected to each of the electrodes 17 through the conductive line. In this embodiment, the conductive line is formed on the first conductive layer by an etching and multilayer interconnection process. The lens driver 15 is configured to supply the plurality of electrodes 17 with a gradient-changing driving voltage, thereby driving the plurality of electrodes 17 to generate an electric field between the first conductive layer 111 and the second conductive layer 113. A plurality of electric fields E whose intensity changes in a gradient and are independent of each other. The electric field generated by each of the electrodes 17 corresponds to the flexibility A light transmissive region of the lens 13 that triggers the light transmissive region to produce a curvature deformation corresponding to the electric field strength. It can be understood that there is a gap between the flexible lens 13 and two adjacent substrates 11 , and the flexible lens 13 is separated from the adjacent two substrates 11 by the gap, and the gap is used for An accommodation space is provided for the curvature deformation of the flexible lens 13. Furthermore, the optical lens 10 may further include a side wall 19 disposed around the optical lens 10 substrate 11 to form a closed optical imaging space together with the optical lens 10 substrate 11.

Since the intensity of the electric field generated by each of the electrodes 17 can be accurately controlled by controlling the driving voltage supplied to each of the electrodes 17 by the lens driver 15, the driving voltage in the gradient can be outputted according to the focal length adjustment request to the plurality of Electrodes 17 and connecting the second conductive layer 113 to a reference voltage to cause the first conductive layer 111 and the second conductive layer 113 to form a current interruption at the position of the flexible lens 13, thereby A mutually independent electric field is generated between the first conductive layer 111 and the second conductive layer 113, and the plurality of light-transmitting regions of the flexible lens 13 are triggered by the mutually independent electric fields to generate a curvature change having a gradient change in magnitude. Finally, the adjustment of the radius of curvature of the surface of the flexible lens 13 is achieved. It can be understood that the curvature deformation of the flexible lens 13 is not limited to the curvature radius adjustment in the convex mirror state, and may also be the curvature radius adjustment in the concave mirror state.

Referring to FIG. 1, the structural state of the optical lens 10 when the electric field intensity between the first conductive layer 111 and the second conductive layer 113 is zero. At this time, the flexible lens 13 is maintained in an initial state due to the absence of an electric field. Wherein, the flexible lens 13 in an initial state may be a plane mirror or a lens at a preset radius of curvature. In the present embodiment, the flexible lens 13 in the initial state is a plane mirror, that is, when the light is irradiated onto the imaging surface of the image sensor 30 through the flexible lens 13 in the optical lens 10, there is no focus, as shown in FIG. The direction indicated by the arrow L.

Referring to FIG. 2, when the plurality of electrodes 17 are used to generate mutually independent and gradient electric fields between the first conductive layer 111 and the second conductive layer 113 (the electric field direction is the arrow E in FIG. 2). When the direction is shown, the different light-transmissive regions of the flexible lens 13 are deformed by corresponding electric fields by the electric field of different intensities, and finally the flexible lens 13 is presented in a lens state with a curvature change. When light is irradiated onto the imaging surface of the image sensor 30 through the flexible lens 13 in the optical lens 10, since the flexible lens 13 has undergone curvature deformation, focusing is achieved, as indicated by an arrow L in FIG. direction.

Referring to FIG. 3, in an embodiment, the plurality of electrodes 17 are arranged in a matrix. If the plane in which the first conductive layer 111 is located is referred to as an XY plane, the distribution of the electric field E between the first conductive layer 111 and the second conductive layer 113 is as shown in FIG. In the present embodiment, by applying a positive voltage having a gradient change on the plurality of electrodes 17, and connecting the second conductive layer 113 to the negative reference voltage Vcom, the first conductive layer 111 may be An electric field E having a gradient in intensity is generated between the second conductive layer 113 and the different light-transmissive regions of the flexible lens 13 to generate a corresponding curvature deformation under the action of the electric field E whose gradient changes in intensity.

It can be understood that autofocusing can also be achieved by imaging effect feedback of the image sensor 30 when controlling the driving voltage supplied to each of the electrodes 17 by the lens driver 15. For example, the driving voltage supplied to each of the electrodes 17 is finely adjusted according to the imaging effect feedback of the image sensor 30, that is, the electric field intensity corresponding to each of the light transmitting regions is finely adjusted, thereby realizing the curvature of each of the light transmitting regions. Automatic adjustment of the deformation to achieve autofocus. As an optional implementation manner, when adjusting the curvature deformation of each of the light-transmitting regions, the curvature change between the adjacent two light-transmitting regions may be discontinuous, that is, at the plurality of electrodes Under the action of the generated electric field, the surface of the flexible lens 13 may be aspherical.

It can be understood that if the optical lens 10 includes three or more substrates 11 , the first conductive layer 111 , the lens driver 15 and the spacer row corresponding to the two flexible lenses 13 located at two ends of the optical lens 10 can be A plurality of electrodes 17 of the cloth are respectively disposed on the two substrates 11 located at both ends of the optical lens 10. In the two substrates 11 located at both ends of the optical lens 10, the first conductive layer 111, the lens driver 15 and the plurality of electrodes 17 arranged on the substrate 11 are disposed on the substrate 11 opposite to the substrate 11 One side of the flexible lens 13 is disposed on the same surface of the substrate 11 as the image sensor 30.

Referring to Figure 5, in one embodiment of the invention, a camera module 100' is provided that includes an optical lens 10' and an image sensor 30. The optical lens 10' includes: a first substrate 101, a second substrate 103, and a third substrate 105 which are arranged in a thickness direction and are transparent. The first substrate 101 and the second substrate 103 are disposed first. a flexible lens 131, a second flexible lens 133 is disposed between the second substrate 103 and the third substrate 105, and the optical axes of the first flexible lens 131 and the second flexible lens 133 are along the first The substrate 101, the second substrate 103, and the third substrate 105 are disposed in the thickness direction.

The first substrate 101 is disposed with a first conductive layer facing a surface of the first flexible lens 131 111. The plurality of electrodes 17 and the first lens driver 151 are arranged at intervals, and the second substrate 103 is provided with a second conductive layer 113 facing the surface of the first flexible lens 131. The first lens driver 151 is configured to supply a driving voltage to the plurality of electrodes 17 on the first substrate 101 to pass between the first substrate 101 and the second substrate 103 through the plurality of electrodes 17 A mutually independent electric field E1 is generated. An electric field E1 generated by each of the electrodes 17 acts on a light transmitting region of the first flexible lens 131 to trigger each of the light transmitting regions to generate a corresponding curvature deformation according to a change in the electric field E1.

The surface of the third substrate 105 facing away from the second flexible lens 133 is provided with a first conductive layer 111, a plurality of electrodes 17 and a second lens driver 153 arranged at intervals, and the second substrate 103 faces the first The surface of the second flexible lens 133 is provided with a second conductive layer 113. The second lens driver 153 is configured to supply a driving voltage to the plurality of electrodes 17 on the third substrate 105 to generate mutual mutual between the third substrate 105 and the second substrate 103 through the plurality of electrodes 17 Independent electric field E2. An electric field E2 generated by each of the electrodes 17 acts on a light transmitting region of the second flexible lens 133 to trigger each of the light transmitting regions to generate a corresponding curvature deformation according to the change of the electric field E2.

The image sensor 30 is disposed on a surface of the third substrate 105 facing away from the second flexible lens 133, and the optical lens 10' is configured to trigger the first by the electric fields E1 and E2 The light-transmissive regions of the flexible lens 131 and the second flexible lens 133 are subjected to curvature deformation to perform imaging focal length adjustment, and an object image of a corresponding focal length is formed on the image sensor 30. For example, in the process of the light L passing through the optical lens 10' to the image sensor 30, the first flexibility is made by adjusting the curvature deformation of the first flexible lens 131 and the second flexible lens 133. The lens 131 and the second flexible lens 133 are in different states of curvature deformation combination, so that optical zooming can be achieved.

It can be understood that the first substrate 101, the second substrate 103, and the third substrate 105 of the optical lens 10' of the present embodiment are the same as the substrate 11 of the optical lens 10 shown in FIGS. 1 and 2, and the first flexible lens 131 and the second flexible lens 133 are the same as the flexible lens 13 shown in FIGS. 1 and 2, the first conductive layer 111, the second conductive layer 113, the first lens driver 151, the second lens driver 153, and the For the connection relationship of the plurality of electrodes 17, reference may be made to the related description in the embodiment shown in FIG. 1 and FIG. 2, the arrangement rule of the plurality of electrodes 17 on the first substrate 101 and the third substrate 103, and the The intensity distribution of the electric fields E1 and E2 can also be referred to the description in the embodiment shown in FIG. 3 and FIG. 4, and details are not described herein again.

Referring to FIG. 6 and FIG. 7 , in one embodiment of the present invention, a terminal 200 is provided, including a camera module 100. The camera module 100 includes an optical lens 10 and an image sensor 30, and the optical lens 10 Including at least two transparent substrates 11 arranged at intervals in the thickness direction, a flexible lens 13 is disposed between two adjacent substrates, and an optical axis of the flexible lens 13 is disposed along a thickness direction of the substrate 11;

An electric field E generated by each of the electrodes 17 acts on a light transmitting region of the flexible lens 13 to trigger each of the light transmitting regions to generate a corresponding curvature deformation according to a change in the electric field E.

The image sensor 30 is disposed on the substrate 11 at one end of the optical lens 10, and the optical lens 10 is configured to perform curvature deformation by triggering the light-transmitting region of the flexible lens 13 under the action of the electric field E. The imaging focal length is adjusted, and an object image of a corresponding focal length is formed on the image sensor 30. 6 is a structural state of the flexible lens 13 when a curvature deformation state is not generated, and FIG. 7 is a structural state of the flexible lens 13 after the curvature deformation is generated. It can be understood that after the flexible lens 13 is subjected to curvature deformation, the light is focused when passing through the optical lens 10, thereby forming an object image corresponding to the focal length on the image sensor 30, as shown in FIG.

The specific structure and function of the camera module 100 can be referred to the description in the embodiment shown in FIG. 1 to FIG. 5. The terminal 200 may be, but not limited to, a terminal having an imaging function such as a smartphone or a tablet.

The terminal further includes a front cover (or rear cover) 210, the front cover (or rear cover) 210 includes a transparent camera mounting area 211, and the camera module 100 is disposed on the front cover ( The inner surface of the rear cover 210 and the optical axis of the optical lens 10 are aligned with the center of the camera mounting region 211. It can be understood that an optical anti-reflection film may be disposed on at least one surface of the camera mounting region 211 for increasing the light transmittance of the camera mounting region 211. In this embodiment, the substrate 11 of the optical lens 10 facing the side of the front cover (or the rear cover) 210 may directly share The front cover (or rear cover) 210 is used, that is, the camera mounting area 211 of the front cover (or rear cover) 210 is used as the substrate 11 at one end of the optical lens 10, so that it can be further reduced. The thickness of the camera module 100.

The terminal further includes a signal processing module 230. The signal processing module 230 can be disposed on a circuit board (PCB) 250 of the terminal, and the image sensor 30 and the lens driver 15 can pass through the flexible circuit board 50. The signal processing module 230 is electrically connected. Autofocus or optical zoom can also be achieved by imaging effect feedback of the image sensor 30 when controlling the driving voltage supplied to each of the electrodes 17 by the lens driver 15. For example, the signal processing module 230 controls each of the lens drivers 15 to finely adjust the driving voltage of the plurality of electrodes 17 corresponding to each flexible lens according to the imaging effect feedback of the image sensor 30, that is, fine-tuning each The intensity of the electric field corresponding to a light-transmitting region, thereby realizing automatic adjustment of the curvature deformation of each of the light-transmitting regions, thereby realizing autofocus or optical zooming.

The optical lens 10, 10' is provided with at least one flexible lens 13 between at least two transparent substrates 11 arranged in the thickness direction, and a transparent first is disposed on the substrate on both sides of each of the flexible lenses 13. The conductive layer 111 and the second conductive layer 113, in turn, generate mutually independent electric fields between the first conductive layer 111 and the second conductive layer 113 through the plurality of spaced-apart electrodes 17 to trigger the The light-transmitting region of the flexible lens 13 generates a corresponding curvature deformation according to the change of the electric field, so that the adjustment of the imaging focal length can be accurately realized, and the focus response speed and reliability of the optical lens can be effectively improved. At the same time, since the conventional voice coil motor brake is not required, the thickness and volume of the camera module 100, 100' can be effectively reduced, which is advantageous for further reducing the thickness of the terminal 200 to which the camera module is applied.

It can be understood that the electrodes of the foregoing embodiments can also be formed directly on the corresponding transparent substrate without resorting to the aforementioned first conductive layer. That is, in this case, the electrode can be considered to be part of the first conductive layer, that is, the first conductive layer includes the electrode. Accordingly, the second conductive layer on the opposite position substrate remains unchanged, the same as the second conductive layer of the previous embodiment, to produce an independently adjustable electric field for each electrode. On the other hand, the second conductive layer of each of the foregoing embodiments includes a continuous layer of a continuously distributed conductive film, so that an independently adjustable electric field can be generated together with the corresponding electrodes. It can also be understood that the second conductive layer may also include a plurality of independent, spaced-distributed electrodes that are in one-to-one correspondence with the plurality of electrodes of the first conductive layer to generate a more precise electric field and improve local control of the flexible lens. .

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the claims of the present invention. Equivalent changes made are still within the scope of the invention.

Claims

An optical lens, comprising:

At least two transparent substrates arranged in a thickness direction, a flexible lens is disposed between the two adjacent substrates, and an optical axis of the flexible lens is disposed along a thickness direction of the substrate;

A transparent first conductive layer and a second conductive layer are respectively disposed on the substrates on both sides of the flexible lens, and the first conductive layer includes a plurality of electrodes arranged at intervals;

The plurality of electrodes respectively receive a driving voltage to generate mutually independent electric fields between the first conductive layer and the second conductive layer;

An electric field generated by each of the electrodes acts on a light transmissive region of the flexible lens to trigger each of the light transmissive regions to produce a corresponding curvature deformation according to a change in the electric field.
The optical lens according to claim 1, wherein said plurality of electrodes are arranged in a matrix at intervals.
The optical lens according to claim 1, wherein a gap exists between said flexible lens and two adjacent said substrates, and said flexible lens is separated from said adjacent two substrates by said gap open.
The optical lens according to claim 1, wherein said first conductive layer and said second conductive layer form a current interruption at a position of said flexible lens.
The optical lens according to claim 1, wherein said adjacent two substrates are rigid substrates.
The optical lens according to claim 1, wherein said electrode is formed directly on a surface of said substrate.
The optical lens according to claim 1, wherein said electrode is formed on a surface of said substrate through a conductive film.
The optical lens according to claim 1, wherein the optical lens further comprises a lens driver disposed on the substrate having the first conductive layer, the lens driver and the first conductive layer being located on the substrate On the same surface.
The optical lens according to any one of claims 1 to 8, wherein the optical lens further comprises another flexible lens and another substrate, and the substrate provided with the second conductive layer is located at the other flexible Between the lens and the flexible lens, the other flexible lens is located between the other substrate and the substrate on which the second conductive layer is disposed.
The optical lens according to claim 9, wherein said another substrate is provided with a plurality of electrodes spaced apart from each other on a surface of said another flexible lens.
The optical lens according to claim 10, wherein said substrate provided with said second conductive layer is provided with another second conductive layer on the opposite side from said second conductive layer.
The optical lens according to any one of claims 1 to 8, wherein the flexible lens is made of a deformable piezoelectric material or an electric field responsive polymer polymer rheology material.
The optical lens according to any one of claims 1 to 8, wherein the first conductive layer and the second conductive layer are respectively passed by one or more pieces of indium tin oxide, nano silver or metal mesh material. A deposition process is formed on the substrate.
A camera module, comprising: an image sensor and an optical lens according to any one of claims 1 to 13, the image sensor being disposed on a substrate at one end of the optical lens, the optical lens being used for Under the action of the electric field, imaging focal length adjustment is performed by triggering a curvature deformation of the light-transmitting region of the flexible lens, and an object image of a corresponding focal length is formed on the image sensor.
The camera module according to claim 10, wherein said image sensor seal And mounted on the substrate at one end of the optical lens, and a plurality of electrodes on the substrate at one end of the optical lens are disposed on the same surface of the substrate.
A terminal, comprising: a camera module, the camera module comprising an image sensor and an optical lens, the optical lens comprising at least two transparent substrates arranged in a thickness direction, two adjacent substrates A flexible lens is disposed between the optical axes of the flexible lens disposed along a thickness direction of the substrate;

A transparent first conductive layer and a second conductive layer are respectively disposed on the substrates on both sides of the flexible lens, and the first conductive layer includes a plurality of electrodes arranged at intervals, and the plurality of electrodes respectively receive driving voltages And generating mutually independent electric fields between the first conductive layer and the second conductive layer;

The image sensor is disposed on a substrate at one end of the optical lens, and the optical lens is configured to perform imaging focus adjustment by triggering a curvature deformation of a light transmitting region of the flexible lens under the action of the electric field, and An object image corresponding to a focal length is formed on the image sensor.
The terminal of claim 16 wherein said plurality of electrodes are arranged in a matrix.
The terminal according to claim 16, wherein a gap exists between said flexible lens and two adjacent said substrates, and said flexible lens is separated from said adjacent two substrates by said gap .
The terminal according to claim 16, wherein the terminal further comprises a front cover and a rear cover, the front cover or the rear cover comprises a transparent camera mounting area, and the camera module is arranged An inner surface of the front cover or the rear cover, and an optical axis of the optical lens is aligned with a center of the camera mounting area.
The terminal according to claim 16, wherein the optical lens further comprises a lens driver disposed on the substrate having the first conductive layer, wherein the lens driver and the first conductive layer are located on the substrate On the surface.