阅读说明：本技术 镜头模组及其色彩还原方法、成像系统 (Lens module, color restoration method thereof and imaging system ) 是由 马宝兴 李明明 于 2021-09-16 设计创作，主要内容包括：本申请涉及一种镜头模组及其色彩还原方法、成像系统,该镜头模组透明的弹性薄膜腔,其内部填充有无色的第一液体；多个供液装置,分别通过管道与弹性薄膜腔连通,以向弹性薄膜腔分别供应不同色彩的第二液体,其中,不同色彩的第二液体与第一液体互不相溶,且第二液体与第一液体叠加后能够产生不同的焦距,并补偿目标物体的色彩像素偏差。该镜头模组在焦距可变的同时,还可以提高成像的色彩像素效果,使得拍摄的物体色彩还原度更真实、色彩效果更艳丽。(The application relates to a lens module, a color reduction method thereof and an imaging system, wherein the lens module is a transparent elastic film cavity, and a colorless first liquid is filled in the transparent elastic film cavity; and the liquid supply devices are respectively communicated with the elastic film cavities through pipelines so as to respectively supply second liquids with different colors to the elastic film cavities, wherein the second liquids with different colors are not mutually soluble with the first liquid, and the second liquids and the first liquid can produce different focal lengths after being superposed and compensate the color pixel deviation of a target object. The lens module can improve the color pixel effect of imaging while the focal length is variable, so that the color reduction degree of a shot object is more real and the color effect is more gorgeous.)

1. A lens module, comprising:

the transparent elastic film cavity is filled with colorless first liquid;

and the liquid supply devices are respectively communicated with the elastic film cavities through pipelines so as to respectively supply second liquids with different colors to the elastic film cavities, wherein the second liquids with different colors are not mutually soluble with the first liquid, and the second liquids and the first liquid can generate different focal lengths after being superposed and compensate color pixel deviation of a target object.

2. The lens module as claimed in claim 1, wherein each of the liquid supply devices comprises:

the fixed cavity is internally provided with the second liquid, the fixed cavity is provided with a first opening and a second opening, the second opening is communicated with the elastic film cavity, and the periphery of the fixed cavity corresponding to the second opening is also provided with an electromagnetic coil;

the pressure regulating pump is communicated with the first opening through a pipeline;

the valve is arranged at the second opening, when the electromagnetic coil is electrified, the valve is opened, the pressure regulating pump drives the second liquid to flow to the elastic film cavity from the fixed cavity, when the electromagnetic coil is powered off, the valve is closed, and the pressure regulating pump draws the second liquid back to the fixed cavity from the elastic film cavity.

3. The lens module as recited in claim 2, wherein the fixing cavity is further provided with an electrode, and the electrode is electrically connected with the electromagnetic coil.

4. The lens module as claimed in claim 3, wherein the plurality of fixing cavities of the plurality of liquid supply devices are disposed in parallel via the electrodes, wherein the electrodes of one of the fixing cavities include a first electrode and a second electrode with opposite electrical properties, and the electrodes of the remaining fixing cavities are the first electrode or the second electrode.

5. The lens module as claimed in claim 1, wherein the material of the elastic film cavity comprises any one of polymethyl methacrylate, polycarbonate, polyimide, and polyethylene terephthalate.

6. The lens module as recited in claim 1, wherein the second liquids of the plurality of liquid supply devices have different refractive indices.

7. The lens module as claimed in claim 1, wherein the first liquid is an electrolyte, the second liquid is an oily non-polar substance, and a side of the elastic film cavity where the second liquid is located is close to a target object to be imaged.

8. The lens module as claimed in claim 1, wherein the plurality of liquid supply devices include a first liquid supply device, a second liquid supply device and a third liquid supply device, and the colors of the second liquid of the first liquid supply device, the second liquid supply device and the third liquid supply device are red, green and blue, respectively.

9. The color restoration method of the lens module is characterized in that the lens module comprises a transparent elastic film cavity, and colorless first liquid is filled in the transparent elastic film cavity; the liquid supply devices are respectively communicated with the elastic film cavities through pipelines so as to respectively supply second liquids with different colors to the elastic film cavities, wherein the second liquids with different colors are not mutually soluble with the first liquid;

the color restoration method comprises the following steps:

acquiring a dominant hue of a target object;

and controlling the second liquid supplied to the elastic film cavity by the liquid supply device of the corresponding color according to the color of the main tone of the target object, so that different focal lengths are generated after the second liquid and the first liquid are superposed, and the color pixel deviation of the target object can be compensated.

10. The color reproduction method according to claim 9, further comprising:

and if the color of the main tone of the target object is the same as the color of the second liquid of any one of the plurality of liquid supply devices, controlling the liquid supply device with the corresponding color to supply the second liquid to the elastic film cavity.

11. The color reproduction method according to claim 9, further comprising:

and if the color of the main tone of the target object is the same as the mixed color of the second liquid of at least part of the liquid supply devices, controlling the part of the liquid supply devices to respectively supply the second liquid to the elastic film cavity.

12. The color reproduction method according to claim 9, wherein the acquiring the dominant hue of the target object comprises: and acquiring the main tone of the target object according to the image of the target object previewed by the liquid lens formed by the first liquid filled in the elastic film cavity.

13. An imaging system, comprising:

a lens module as claimed in any one of claims 1 to 8;

the lens barrel and the base are connected with each other to form an accommodating space for accommodating the lens module, and the lens barrel is provided with an optical hole corresponding to the lens module along the optical axis direction;

and the image sensing unit is arranged on one side of the lens barrel, which is far away from the unthreaded hole, or is fixed on the base and is used for converting an optical signal entering the elastic film cavity from the unthreaded hole into an electric signal.

Technical Field

The application relates to the technical field of image acquisition, in particular to a lens module and a color restoration method and an imaging system thereof.

Background

With the development of times, the requirements of people on image acquisition are increasingly raised, and the lens of the camera is particularly critical to the final image acquisition result. The liquid lens is a novel optical element provided according to the bionics principle, is made of a liquid material, changes the refractive index or the surface curvature radius of the liquid material, changes the focal length of the liquid lens, can realize zooming without a mechanical movement device, and has the advantages of small volume, high response speed, simplicity in operation, no abrasion, long service life, low power consumption and the like, so that the liquid lens has a good application prospect in optical systems such as mobile phones, digital cameras, network cameras, endoscopes and the like.

In order to image objects with different distances, a zoom lens can be used for adjusting the focal length, but the existing liquid lens can only carry out fixed-multiple zooming, and the application range is narrow. In addition, the conventional liquid lens has color pixel deviation during imaging, and cannot truly restore the color of a shot object.

Disclosure of Invention

The application aims to provide a lens module, a color restoration method thereof and an imaging system, wherein the lens module can improve the color pixel effect of imaging while the focal length is variable, so that the color restoration degree of a shot object is more real, and the color effect is more gorgeous.

In a first aspect, an embodiment of the present application provides a lens module, including: the transparent elastic film cavity is filled with colorless first liquid; and the liquid supply devices are respectively communicated with the elastic film cavities through pipelines so as to respectively supply second liquids with different colors to the elastic film cavities, wherein the second liquids with different colors are not mutually soluble with the first liquid, and the second liquids and the first liquid can produce different focal lengths after being superposed and compensate the color pixel deviation of a target object.

In one possible implementation, each liquid supply device comprises: the fixed cavity is internally provided with a second liquid, the fixed cavity is provided with a first opening and a second opening, the second opening is communicated with the elastic film cavity, and the periphery of the fixed cavity corresponding to the second opening is also provided with an electromagnetic coil; the pressure regulating pump is communicated with the first opening through a pipeline; the valve is arranged at the second opening, when the electromagnetic coil is electrified, the valve is opened, the pressure regulating pump drives the second liquid to flow to the elastic film cavity from the fixed cavity, when the electromagnetic coil is powered off, the valve is closed, and the pressure regulating pump draws the second liquid back to the fixed cavity from the elastic film cavity.

In a possible realization, the fixed chamber is also provided with an electrode, which is electrically connected with the electromagnetic coil.

In a possible implementation manner, the plurality of fixed cavities of the plurality of liquid supply devices are arranged in parallel through electrodes, wherein the electrodes of one fixed cavity comprise a first electrode and a second electrode which are opposite in electrical property, and the electrodes of the other fixed cavities are the first electrode or the second electrode.

In a possible implementation manner, the material of the elastic film cavity includes any one of polymethyl methacrylate, polycarbonate, polyimide and polyethylene terephthalate.

In one possible implementation, the second liquids of the plurality of liquid supply devices have different refractive indices.

In one possible implementation, the first liquid is an electrolyte, the second liquid is an oily non-polar substance, and the side of the elastic membrane cavity where the second liquid is located is close to the target object.

In one possible implementation manner, the plurality of liquid supply devices comprise a first liquid supply device, a second liquid supply device and a third liquid supply device, and the colors of the second liquid of the first liquid supply device, the second liquid supply device and the third liquid supply device are red, green and blue respectively.

In a second aspect, an embodiment of the present application further provides a color restoration method for a lens module, where the lens module includes: the transparent elastic film cavity is filled with colorless first liquid; the liquid supply devices are respectively communicated with the elastic film cavities through pipelines so as to respectively supply second liquids with different colors to the elastic film cavities, wherein the second liquids with different colors are not mutually soluble with the first liquid, and the color reduction method comprises the following steps: acquiring a dominant hue of a target object; and controlling the second liquid supplied to the elastic film cavity by the liquid supply device corresponding to the color according to the color of the main tone of the target object, so that different focal lengths are generated after the second liquid and the first liquid are superposed, and the color pixel deviation of the target object can be compensated.

In one possible implementation, the color restoration method further includes: and if the color of the main tone of the target object is the same as the color of the second liquid of any one of the plurality of liquid supply devices, controlling the liquid supply device with the corresponding color to supply the second liquid to the elastic film cavity.

In one possible implementation, the color restoration method further includes: and if the color of the main tone of the target object is the same as the mixed color of the second liquid of at least part of the liquid supply devices, the control part of the liquid supply devices respectively supplies the second liquid to the elastic film cavities.

In one possible implementation, obtaining the dominant hue of the target object includes: and acquiring the main tone of the target object according to the image of the target object previewed by the liquid lens formed by the first liquid filled in the elastic film cavity.

In a third aspect, an embodiment of the present application further provides an imaging system, including: any of the lens modules described above; the lens barrel and the base are connected with each other, an accommodating space for accommodating the lens module is formed by the lens barrel and the base, and the lens barrel is provided with an unthreaded hole corresponding to the lens module along the optical axis direction; and the image sensing unit is arranged on one side of the lens barrel far away from the unthreaded hole or fixed on the base and is used for converting an optical signal entering the elastic film cavity from the unthreaded hole into an electric signal.

According to the lens module, the color reduction method and the imaging system thereof, the colorless first liquid and the plurality of second liquids with different colors are filled in the transparent elastic film cavity, and the second liquids with different colors are not mutually soluble with the first liquid, so that the second liquid and the first liquid can generate different focal lengths after being superposed, and the color pixel deviation of a target object is compensated. The lens module can improve the color pixel effect of imaging while the focal length is variable, so that the color reduction degree of a shot object is more real and the color effect is more gorgeous.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts. In addition, in the drawings, like parts are denoted by like reference numerals, and the drawings are not drawn to actual scale.

Fig. 1 is a schematic structural diagram of a lens module according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a lens module according to another embodiment of the present application;

fig. 3 is a block flow diagram illustrating a color restoration method for a lens module according to an embodiment of the present disclosure;

fig. 4 shows a schematic structural diagram of an imaging system provided in an embodiment of the present application.

Description of reference numerals:

1. a lens module;

11. an elastic film chamber; l1, first liquid; l2, second liquid;

12. a liquid supply device; 12a, a first liquid supply device; 12b, a second liquid supply device; 12c, a third liquid supply device; 121. a fixed cavity; 121a, a first opening; 121b, a second opening; 122. a valve; e1, a first electrode; e2, a second electrode;

2. a lens barrel; 21. a light hole;

3. a base;

4. an image sensing unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 shows a schematic structural diagram of a lens module according to an embodiment of the present application, and fig. 2 shows a schematic structural diagram of a lens module according to another embodiment of the present application. .

As shown in fig. 1, an embodiment of the present application provides a lens module 1, including: a transparent flexible film chamber 11 and a plurality of liquid supply means 12.

The interior of the flexible membrane chamber 11 is filled with a colourless first liquid L1.

The liquid supply devices 12 are respectively communicated with the elastic film cavity 11 through pipelines to respectively supply second liquids L2 with different colors to the elastic film cavity 11, wherein the second liquids L2 and the first liquids L1 are insoluble to each other, and the second liquids and the first liquids can generate different focal lengths after being superposed, and compensate color pixel deviation of a target object.

Alternatively, the density of the second liquid L2 is less than the density of the first liquid L1, and the second liquid L2 floats on the first liquid L1 after being injected into the flexible film chamber 11. Alternatively, the first liquid L1 is an electrolyte such as rotary mercury, the second liquid L2 is an oily non-polar substance such as fluorinated silicone oil, and the second liquids L2 with different colors are not mutually soluble. A clear lens layer can be formed on the interface between the immiscible first liquid L1 and the second liquid L2 to focus light.

Specifically, before shooting, the main color tone of the target object is obtained according to the image of the target object previewed by the liquid lens formed by the first liquid L1 filled in the elastic film cavity 11, and then the second liquid L2 supplied to the elastic film cavity 11 by the liquid supply device 12 of the corresponding color is controlled according to the color of the main color tone, so that the second liquid L2 and the first liquid L1 are superposed to generate different focal lengths, and the color pixel deviation of the target object can be compensated.

Herein, "dominant hue" refers to the general tendency of picture colors in a picture. For example, objects of different colors are covered in a piece of golden sunlight, and the objects of different colors are covered with a certain color, so that the objects of different colors all have the same color tendency, and the color phenomenon is the 'dominant hue'. For example, the main color tone is green, and then the liquid supply amount of the liquid supply device 12 corresponding to the green second liquid L2 is adjusted so that the green second liquid L2 is injected into the elastic film chamber 11 through the corresponding pipe. Since the second liquid L2 is immiscible with the first liquid L1 filled in the elastic film cavity 11, and the density of the second liquid L2 is lower than that of the first liquid L1, the green second liquid L2 floats on the surface of the first liquid L1, so as to form a green liquid lens with variable focal length.

According to the lens module provided by the embodiment of the application, the colorless first liquid L1 and the multiple second liquids L2 with different colors are filled in the transparent elastic film cavity, and the density of the second liquid L2 is different from that of the first liquid L1, so that the second liquid and the first liquid can generate different focal lengths after being superposed, and the color pixel deviation of a target object is compensated. The lens module can improve the color pixel effect of imaging while the focal length is variable, so that the color reduction degree of a shot object is more real and the color effect is more gorgeous.

The following describes in detail a specific structure of the lens module 1 according to the embodiment of the present application with reference to the drawings.

According to the principle of colorimetry, most of the colors in the nature can be generated by mixing red light, green light and blue light in a proper proportion, so that the red light, the green light and the blue light are called as three primary colors. Any light can be mixed by red, green and blue lights according to different proportions, which is the principle of three primary colors. For example, red and green are superimposed to yellow; the green and the blue are superposed to form cyan; the red and the blue are superposed to be bright purple; the red color is white after being superimposed with the green and blue colors.

Thus, in some embodiments, the plurality of liquid supply devices 12 includes a first liquid supply device 12a, a second liquid supply device 12b and a third liquid supply device 12c, and the color of the second liquid L2 of the first liquid supply device 12a, the second liquid supply device 12b and the third liquid supply device 12c is red, green and blue, respectively.

In one example, if the color of the main tone of the target object is the same as the color of any one of the plurality of second liquids L2, the liquid supply device 12 of the corresponding color is controlled to supply the second liquid L2 of the corresponding color to the elastic film chamber 11.

For example, the shooting scene is a green lawn of a park, the control unit 13 obtains a large percentage of green in the shooting scene according to color pixels in the preview imaging, that is, the main color tone is green, and then controls the second liquid supply device 12b to inject the green second liquid L2 above the colorless first liquid L1 in the elastic film cavity 11, so that the light of the shooting scene is compensated by the green second liquid L2 and then refracted, and then focused for imaging. At the moment, the green color in the shot picture is more gorgeous, and the part with insufficient green light is compensated, so that the imaging color pixel effect is improved.

In another example, if the color of the main color tone of the target object is the same as the color mixed by the second liquid L2 of some of the liquid supply devices 12, the lens module controls some of the liquid supply devices 12 to supply the second liquid L2 of the corresponding color to the elastic film chamber 11, respectively.

For example, the shooting scene is sky or sea, and the control unit 13 acquires that cyan is comparatively large in the shooting scene, that is, the dominant hue is cyan, from the color pixels at the time of preview imaging. Because the color of the green and the color of the blue are cyan after being superposed, the lens module can control the second liquid supply device 12b and the third liquid supply device 12c to respectively inject the green and the blue second liquid L2 above the colorless first liquid L1 in the elastic film cavity 11, so that the light of the shot scene is compensated by the green and the blue second liquid L2 and then refracted, and then focused and imaged. At the moment, the cyan in the shot picture is more gorgeous, and the part with insufficient cyan light is compensated, so that the imaging color pixel effect is improved.

In another example, the lens module calculates color matching proportions of the plurality of colored liquids according to the color of the main tone of the target object; and respectively controlling the volumes of the colored liquids supplied to the elastic film cavity by the liquid supply devices with the corresponding colors according to the color matching proportions.

As described above, when the dominant hue of the photographed scene is cyan, the lens module may control the second liquid supply device 12b and the third liquid supply device 12c to inject the second liquid L2 of green and blue over the colorless first liquid L1 in the elastic film chamber 11, respectively, so as to obtain cyan by the superposition of green and blue. In order to make the cyan color more approximate to the real color of the photographed scene, the lens module may further control the volumes of the second liquid L2 entering the second liquid supply device 12b and the third liquid supply device 12c of the elastic film chamber 11, respectively, i.e. control the color matching ratios of the green second liquid L2 and the blue second liquid L2 to obtain the color with higher reduction degree.

In some embodiments, the second liquids L2 of the liquid supply apparatuses 12 have different refractive indexes, such that at least one of the second liquids L2 injected into the elastic film chamber 11 forms a plurality of liquid lenses with different focal lengths after being combined with the first liquid L1.

In addition, the elastic membrane chamber 11 has certain elasticity and can be deformed adaptively according to the volume of the liquid. In some embodiments, the material of the elastic film cavity 11 includes any one of polymethyl methacrylate, polycarbonate, polyimide, and polyethylene terephthalate.

In some embodiments, the liquid supply 12 includes: a fixed chamber 121, a pressure regulating pump and a valve 122.

The fixed chamber 121 contains a second liquid L2 therein, the fixed chamber 121 is provided with a first opening 121a and a second opening 121b, the second opening 121b communicates with the elastic film chamber 11, and the fixed chamber 121 is further provided with an electromagnetic coil on the peripheral side corresponding to the second opening 121 b.

The pressure regulating pump is communicated with the first opening 121a through a pipeline, the valve 122 is arranged at the second opening 121b, when the electromagnetic coil is electrified, the valve 122 is opened, the pressure regulating pump drives the second liquid L2 to flow from the fixed cavity 121 to the elastic membrane cavity 11, when the electromagnetic coil is not electrified, the valve 122 is closed, and the pressure regulating pump draws the second liquid L2 from the elastic membrane cavity 11 back to the fixed cavity 121.

In one example, the pressure regulating pump is a hydraulic pump for supplying the second liquid L2 to the fixed chamber 121 and driving the second liquid L2 to flow back and forth between the fixed chamber 121 and the elastic membrane chamber 11 in cooperation with the valve 122. In another example, the pressure regulating pump is an air pump, and the air pressure is adjusted according to the opening and closing of the valve 122, so as to drive the second liquid L2 to flow back and forth between the fixed chamber 121 and the elastic membrane chamber 11.

The pressure regulating pump may also be any other suitable pump, such as an electrostatic pump (e.g. peristaltic pump), a zipper actuator, a comb drive, a resonant electrostatic pump, a piezoelectric pump (e.g. bending piezo), a bimetallic pump, a bistable or tristable pump, an electrowetting pump, a molecular pump, a pump using electroactive polymers, an S-shaped diaphragm actuator, an electromagnetic and thermally actuated pump, etc., depending on the specific requirements, and will not be described in detail.

Further, the fixing cavity 121 is further provided with an electrode, and the electrode is electrically connected with the electromagnetic coil.

Alternatively, the fixed cavities 121 of the liquid supply devices 12 are arranged in parallel through electrodes, wherein the electrodes of one fixed cavity 121 include a first electrode E1 and a second electrode E2 which are opposite in electrical property, and the electrodes of the other fixed cavities 121 are the first electrode E1 or the second electrode E2.

As shown in FIG. 1, in the first liquid supply device 12a, the second liquid supply device 12b and the third liquid supply device 12c, the electrodes of the fixed cavity 121 of the first liquid supply device 12a include a first electrode E1 and a second electrode E2, wherein the first electrode E1 is a common electrode, the electrodes of the fixed cavity 121 of the second liquid supply device 12b and the third liquid supply device 12c are both second electrodes E2, and each of the second electrode E2 and the first electrode E1 are respectively connected to the negative end and the positive end of the electromagnetic coil, so as to supply power to the corresponding electromagnetic coil, and further control the opening or closing of the valve 122. With the arrangement, the circuit can be simplified, and the wiring space can be saved.

Fig. 2 is a schematic structural diagram of a lens module according to another embodiment of the present application.

As shown in fig. 2, the present embodiment further provides another lens module 1, which is similar to the lens module 1 shown in fig. 1, except that the density of the second liquid L2 is greater than that of the first liquid L1, and the elastic film cavity 11 is disposed upside down without changing the direction of the incident light.

Alternatively, the first liquid L1 is an electrolyte, and the second liquid L2 is a polymer liquid material, such as trichloroethylene, then the second liquid L2 supplied to the elastic film cavity 11 by the liquid supply device 12 will be located at the lower side of the elastic film cavity 11, the first liquid L1 is located above the second liquid L2, and the side of the elastic film cavity 11 where the second liquid L2 is located is close to the target object.

Fig. 3 is a block flow diagram illustrating a color restoration method for a lens module according to an embodiment of the present disclosure.

As shown in fig. 3, the color restoration method of the lens module according to the embodiment of the present application includes steps S1-S2.

Specifically, the color restoration method includes:

step S1: acquiring a dominant hue of a target object;

step S2: and controlling the second liquid supplied to the elastic film cavity by the liquid supply device corresponding to the color according to the color of the main tone of the target object, so that different focal lengths are generated after the second liquid and the first liquid are superposed, and the color pixel deviation of the target object can be compensated.

Further, the color restoration method further includes: and if the color of the main tone of the target object is the same as the color of the second liquid of any one of the plurality of liquid supply devices, controlling the liquid supply device with the corresponding color to supply the second liquid to the elastic film cavity.

Taking the plurality of liquid supply devices 12 including the first liquid supply device 12a, the second liquid supply device 12b and the third liquid supply device 12c, the colors of the second liquid L2 of the first liquid supply device 12a, the second liquid supply device 12b and the third liquid supply device 12c are red, green and blue respectively, for example, the shooting scene is a green lawn of a park, the lens module 1 obtains the occupation ratio of green in the shooting scene according to the color pixels during preview imaging, that is, the dominant hue is green, and then the second liquid supply device 12b is controlled to inject the green second liquid L2 above the colorless first liquid L1 in the elastic film cavity 11, so that the light of the shooting scene is compensated by the green second liquid L2 and then refracted, and then focused imaging is performed. At the moment, the green color in the shot picture is more gorgeous, and the part with insufficient green light is compensated, so that the imaging color pixel effect is improved.

Further, the color restoration method further includes: and if the color of the main tone of the target object is the same as the mixed color of the second liquid of at least part of the liquid supply devices, the control part of the liquid supply devices respectively supplies the second liquid to the elastic film cavities.

For example, the shooting scene is sky or sea, and the control unit 13 acquires that cyan is comparatively large in the shooting scene, that is, the dominant hue is cyan, from the color pixels at the time of preview imaging. Because the color of the green and the color of the blue are cyan after being superposed, the lens module can control the second liquid supply device 12b and the third liquid supply device 12c to respectively inject the green and the blue second liquid L2 above the colorless first liquid L1 in the elastic film cavity 11, so that the light of the shot scene is compensated by the green and the blue second liquid L2 and then refracted, and then focused and imaged. At the moment, the cyan in the shot picture is more gorgeous, and the part with insufficient cyan light is compensated, so that the imaging color pixel effect is improved.

Further, in step S1, the acquiring the dominant hue of the target object includes: the dominant hue of the object is obtained from the image of the object previewed by the liquid lens formed by the first liquid L1 filled inside the elastic film chamber 11. At this time, the valves of the liquid supply devices 12 are in a closed state, after the main tone of the target object is obtained, the liquid supply devices 12 of the corresponding colors are controlled according to the color of the main tone to inject the second liquid L2 into the elastic film cavity 11, so that the color pixel deviation of the target object can be compensated after the second liquid L2 is overlapped with the first liquid L1.

Fig. 4 shows a schematic structural diagram of an imaging system provided in an embodiment of the present application.

As shown in fig. 4, an imaging system is further provided in the present embodiment, which includes the lens module 1, the lens barrel 2 and the base 3 connected to each other, and the image sensing unit 4.

The lens barrel 2 and the base 3 form an accommodating space for accommodating the lens module 1, and the lens barrel 2 is provided with an optical hole 21 corresponding to the lens module 1 along the optical axis direction. The image sensing unit 4 is disposed on one side of the lens barrel 2 away from the aperture 21 or fixed on the base 3, and is configured to convert an optical signal entering the lens module 1 from the aperture 21 into an electrical signal, so as to obtain a digital image signal. The image sensor unit 4 may be a charge coupled device or a cmos device.

In addition, the imaging system may further include an electromagnetic shielding sleeve sleeved on the outer peripheral side of the base 3 to shield the interference of the external electromagnetic wave to the image sensing unit 4, thereby improving the imaging quality.

In some embodiments, the lens module can be combined with a conventional optical lens made of glass material to exert respective advantages of the conventional optical lens and the liquid lens, so as to improve the imaging effect.

The imaging system can be widely applied to scenes such as bar code reading, package sorting, security and display devices and the like which need to be focused at a plurality of positions, such as scanning equipment, industrial cameras and the like.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.