Liquid lens and electronic terminal

Abstract

The utility model relates to a liquid lens and an electronic terminal.The liquid lens comprises a body, a light-transmitting film, a driving mechanism and an air pressure adjusting device, the body and the light-transmitting film define a liquid cavity and two gas cavities, the liquid cavity is located between the two gas cavities, the gas cavities and the liquid cavity are separated through the light-transmitting film, and the liquid cavity is used for being filled with transparent liquid; the gas cavity is filled with gas, and the part of the side wall forming the liquid cavity on the body is an elastic film; the driving mechanism is arranged on the body and connected with the elastic film, and the driving mechanism is configured to drive the elastic film to deform so as to adjust the volume of the liquid cavity; the air pressure adjusting device is configured to adjust the air pressure of the air cavity. The method has the advantages of being large in focusing adjustment range and wide in application range.

Description

Technical Field

[0001] This application relates to the technical field of lenses, and particularly to a liquid lens and an electronic terminal. Background Art

[0002] Traditional optical modules have good optical performance and stability and have been widely used. However, with the development of optical systems, optical zoom has become a key factor restricting their development. Liquid lens zoom can achieve continuous zoom within a certain range when the imaging surface position is relatively constant or unchanged.

[0003] In related technologies, zoom adjustment is achieved by regulating the curvature of the light-transmitting film. For example, a liquid lens includes a container, a light-transmitting film, and a driver. The light-transmitting film and the container enclose an accommodation space filled with liquid. The driver drives the light-transmitting film to deform, realizing the change in the curvature of the light-transmitting film and thus adjusting the focal length of the liquid lens. However, in related technologies, thin-film lenses are all plano-convex lenses or plano-concave lenses, with positive focal lengths and small variable ranges, which are not applicable to precision optical imaging devices and have a small scope of application. Utility Model Content

[0004] Embodiments of this application provide a liquid lens and an electronic device, which increase the focusing range of the liquid lens and have a wide range of applications, so as to at least partially solve the above technical problems.

[0005] To achieve the above object, according to the first aspect of this application, a liquid lens is provided, including:

[0006] A light-transmitting film;

[0007] A body, the body and the light-transmitting film enclose a liquid cavity and two gas cavities. The liquid cavity is located between the two gas cavities. The gas cavities are separated from the liquid cavity by the light-transmitting film. The liquid cavity is used to fill a transparent liquid, and the gas cavities are used to fill gas. A part of the side wall of the body forming the liquid cavity is an elastic film;

[0008] A driving mechanism, disposed on the body and connected to the elastic film. The driving mechanism is configured to drive the elastic film to deform to adjust the volume of the liquid cavity;

[0009] A gas pressure regulating device, the gas pressure regulating device is configured to regulate the gas pressure in the gas cavities.

[0010] Optionally, the liquid cavity includes a first cavity and a second cavity. The first cavity communicates with the second cavity. The second cavity is located between the two gas cavities. A part of the side wall of the body forming the first cavity is the elastic film.

[0011] Optionally, the driving mechanism includes a first electrode and a second electrode. The first electrode is fixed on the elastic membrane. The first electrode and the second electrode are arranged opposite to each other with a certain interval. The second electrode is fixedly connected to the body. The first electrode and the second electrode have opposite electric polarities. The first electrode is electrostatically driven to approach or move away from the second electrode.

[0012] Optionally, the first cavity is located outside the second cavity, and the first cavity surrounds the second cavity.

[0013] Optionally, along the optical path transmission direction, the elastic membrane is located at one end of the first cavity, and the second electrode is located at the other end of the first cavity. The elastic membrane and the first electrode are annular, and the elastic membrane surrounds the second cavity.

[0014] Optionally, the first electrode is fixed on the side of the elastic membrane facing away from the first cavity.

[0015] Optionally, the body is provided with side walls forming the first cavity and the second cavity. The side walls are located between the first cavity and the second cavity. A plurality of microchannel structures are arranged on the side walls. The first cavity and the second cavity are connected through the microchannel structures.

[0016] Optionally, the microchannel structure is a curved channel.

[0017] Optionally, the elasticity of the light-transmitting membrane is less than that of the elastic membrane.

[0018] Optionally, the dielectric constant of the transparent liquid is Q, where Q > 10.

[0019] Optionally, the body includes:

[0020] A cylinder body, which forms a channel penetrating the axis of the cylinder body. A groove with one end open is formed on the cylinder body. The elastic membrane is arranged on the cylinder body, and the elastic membrane seals the opening. The cylinder body and the elastic membrane enclose the first cavity. The light-transmitting membrane is fixed on the cylinder body, and the light-transmitting membrane seals both ends of the channel. The light-transmitting membrane and the cylinder body enclose the second cavity;

[0021] A first transparent cover, located at one end of the cylinder body. The first transparent cover is hermetically connected to the cylinder body. The first transparent cover and the light-transmitting membrane on its side enclose the gas cavity;

[0022] A second transparent cover, located at the other end of the cylinder body. The second transparent cover is hermetically connected to the cylinder body. The second transparent cover and the light-transmitting membrane on its side enclose another gas cavity.

[0023] Optionally, the air pressure regulating device is an air charging and discharging device configured to charge or discharge air into or from the two gas chambers respectively.

[0024] Optionally, the air pressure regulating device includes a heating mechanism and a cooling mechanism. The heating mechanism is configured to increase the temperature of the gas in the two gas chambers respectively, and the cooling mechanism is configured to decrease the temperature of the gas in the two gas chambers respectively.

[0025] According to a second aspect of the present application, there is provided an electronic terminal including the liquid lens described above.

[0026] For the liquid lens and the electronic terminal according to the embodiments of the present application, through the above technical solutions, the liquid lens has a body, a light-transmitting film, a driving mechanism and an air pressure regulating device. The body and the light-transmitting film enclose a liquid chamber and two gas chambers. The gas chambers are separated from the liquid chamber by the light-transmitting film. The liquid chamber is used to fill a transparent liquid. Part of the side wall of the liquid chamber is an elastic film. The driving mechanism drives the elastic film to deform to adjust the volume of the liquid chamber, thereby adjusting the hydraulic pressure in the liquid chamber. The air pressure regulating device adjusts the air pressure in the two gas chambers. By adjusting the relationship between the air pressure in the gas chambers and the hydraulic pressure in the liquid chamber, the light-transmitting film can be made double convex, plano-convex, plano-concave or double concave, overcoming the problems of small focusing range and small applicable range of liquid lenses in the prior art, and achieving the technical effects of large focusing range and wide applicable range.

[0027] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals represent the same parts in the following description.

[0030] Figure 1 is a first axonometric view of the liquid lens provided in an exemplary embodiment of the present disclosure;

[0031] Figure 2 is a second axonometric view of the liquid lens provided in an exemplary embodiment of the present disclosure;

[0032] Figure 3 is a side view of the liquid lens provided in an exemplary embodiment of the present disclosure;

[0033] Figure 4 is Figure 3 the A-A cross-sectional view;

[0034] Figure 5 is a schematic diagram of a biconvex liquid lens provided in an exemplary embodiment of the present disclosure;

[0035] Figure 6 is a schematic diagram of a biconcave liquid lens provided in an exemplary embodiment of the present disclosure;

[0036] Figure 7 is a schematic diagram of a plano-convex liquid lens provided in an exemplary embodiment of the present disclosure

[0037] Figure 8 is a schematic diagram of a plano-concave liquid lens provided in an exemplary embodiment of the present disclosure.

[0038] Description of reference numerals:

[0039] 100, liquid lens; 110, body; 111, liquid cavity; 1111, first cavity; 1112, second cavity; 1113, side wall; 112, microchannel structure; 113, gas cavity; 1131, third cavity; 1132, fourth cavity; 115, elastic membrane; 116, cylinder; 1161, channel; 1162, groove; 117, first transparent cover; 118, second transparent cover; 119, gland; 1191, connecting portion; 1192, pressing portion; 120, light-transmitting membrane; 121, first light-transmitting membrane; 122, second light-transmitting membrane; 130, driving mechanism; 131, first electrode; 132, second electrode. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0041] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4, an embodiment of the present application provides a liquid lens 100, which includes a body 110, a light-transmitting film 120, a driving mechanism 130, and a gas pressure regulating device. The light-transmitting film 120 is hermetically connected to the body 110. The light-transmitting film 120 and the body 110 enclose a liquid chamber 111 and two gas chambers 113. The gas chambers 113 are separated from the liquid chamber 111 by the light-transmitting film 120. The liquid chamber 111 is for filling with a transparent liquid, and the gas chambers 113 are for filling with gas. The gas chambers 113 are located on both sides of the liquid chamber 111. A part of the side wall of the body 110 forming the liquid chamber 111 is an elastic film 115. The driving mechanism 130 is disposed on the body 110. The driving end of the driving mechanism 130 is connected to the elastic film 115. The driving mechanism 130 is configured to drive the elastic film 115 to deform, so as to adjust the volume of the liquid chamber 111, thereby changing the hydraulic pressure on one side of the light-transmitting film 120. The gas pressure regulating device is configured to regulate the gas pressure in the gas chambers 113.

[0042] Exemplarily, referring to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , when the gas pressure in the gas chamber is greater than the hydraulic pressure in the liquid chamber, the light-transmitting film 120 bulges towards the gas chamber side. When the hydraulic pressure in the liquid chamber is greater than the gas pressure in the gas chamber, the light-transmitting film 120 depresses towards the liquid chamber side. A biconvex lens, a biconcave lens, a plano-convex lens, or a plano-concave lens can be adjusted. The focal length adjustment range of the liquid lens 100 is large, which is suitable for high-precision optical instruments and has a wide application range.

[0043] In some embodiments, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 , the liquid chamber 111 includes a first chamber 1111 and a second chamber 1112. The first chamber 1111 communicates with the second chamber 1112. The first chamber 1111 is at least located on one side of the second chamber 1112. The first chamber 1111 and the second chamber 1112 are for filling with a transparent liquid. Among them, the first chamber 1111 is a liquid storage chamber, and the second chamber 1112 is an imaging chamber. A part of the side wall of the body 110 forming the first chamber 1111 is an elastic film 115. The gas chamber 113 includes a third chamber 1131 and a fourth chamber 1132. Along the optical path transmission direction, the third chamber 1131, the second chamber 1112, and the fourth chamber 1132 are arranged in sequence. The third chamber 1131 and the fourth chamber 1132 are located at both ends of the second chamber 1112. The third chamber 1131 and the fourth chamber 1132 are for filling with gas.

[0044] Referring to Figure 4, two light-transmitting films 120 are provided, namely a first light-transmitting film 121 and a second light-transmitting film 122. Along the light path transmission direction, the first light-transmitting film 121, the second cavity 1112, and the second light-transmitting film 122 are arranged in sequence. For example, the first light-transmitting film 121 can be the light-incident side, and the second light-transmitting film 122 is the light-emitting side. The first light-transmitting film 121 and the second light-transmitting film 122 are located at both ends of the second cavity 1112, and the light-transmitting film 120 is fixed on the body 110. The first light-transmitting film 121 is located between the third cavity 1131 and the second cavity 1112, and the third cavity 1131 and the second cavity 1112 are separated by the first light-transmitting film 121. The second light-transmitting film 122 is located between the fourth cavity 1132 and the second cavity 1112, and the fourth cavity 1132 and the second cavity 1112 are separated by the second light-transmitting film 122.

[0045] See Figure 4 , a driving mechanism 130 is arranged on the body 110, and the driving end of the driving mechanism 130 is connected to the elastic film 115. The driving mechanism 130 is configured to drive the elastic film 115 to deform so as to adjust the volume of the first cavity 1111. If initially, the hydraulic pressure in the second cavity 1112 is balanced with the air pressure in the third cavity 1131 and the fourth cavity 1132, and the first light-transmitting film 121 and the second light-transmitting film 122 are not deformed and in a flat state, at this time, see Figure 5 , if the driving mechanism 130 adjusts the elastic film 115 to deform inwards concave into the first cavity 1111, the volume of the first cavity 1111 decreases, the transparent liquid flows from the first cavity 1111 to the second cavity 1112, the hydraulic pressure in the second cavity 1112 increases, the first light-transmitting film 121 and the second light-transmitting film 122 bulge and deform, and the liquid lens 100 is a biconvex lens; see Figure 6 , if the driving mechanism 130 adjusts the elastic film 115 to deform outwards convex out of the first cavity 1111, the volume of the first cavity 1111 increases, the transparent liquid flows from the second cavity 1112 to the first cavity 1111, the hydraulic pressure in the second cavity 1112 decreases, the first light-transmitting film 121 and the second light-transmitting film 122 concave and deform, and the liquid lens 100 is a biconcave lens.

[0046] In the embodiment of the present application, the air pressure regulating device is configured to regulate the air pressure in the third cavity 1131 and the fourth cavity 1132. If initially, the hydraulic pressure in the second cavity 1112 is balanced with the air pressure in the third cavity 1131 and the fourth cavity 1132, and the first light-transmitting film 121 and the second light-transmitting film 122 are not deformed and in a flat state, at this time, see Figure 7, if the driving mechanism 130 adjusts the elastic membrane 115 to deform and concave into the first cavity 1111, the volume of the first cavity 1111 decreases, the transparent liquid flows from the first cavity 1111 to the second cavity 1112, the hydraulic pressure in the second cavity 1112 increases, and the pneumatic pressure regulating device adjusts the third cavity 1131 or the fourth cavity 1132 to increase to the same as the hydraulic pressure in the second cavity 1112, then one of the first light-transmitting membrane 121 and the second light-transmitting membrane 122 bulges outwards and the other is flat, and the liquid lens 100 is a plano-convex lens.

[0047] In addition, if the body 110 is arranged vertically along the optical path transmission direction, the second light-transmitting membrane 122 bulges under the action of the gravity of the transparent liquid. At this time, the pneumatic pressure regulating device adjusts the air pressure in the fourth cavity 1132 to support the second light-transmitting membrane 122, so that the second light-transmitting membrane 122 is not deformed and is in a flat state.

[0048] In the embodiment of the present application, the liquid cavity 111 includes a first cavity 1111 and a second cavity 1112. The first cavity 1111 serves as a liquid storage cavity, and the second cavity 1112 serves as an imaging cavity. Adjusting the volume of the first cavity 1111 to change the hydraulic pressure value of the second cavity 1112 will not affect the imaging of the second cavity 1112 and ensure the imaging effect.

[0049] In some embodiments, refer to Figure 1 , Figure 2 and Figure 4 , the driving mechanism 130 includes a first electrode 131 and a second electrode 132. The first electrode 131 is fixed on the elastic membrane 115. The first electrode 131 and the second electrode 132 are arranged opposite to each other at an interval. The second electrode 132 is fixedly connected to the body 110. Charge is injected into the first electrode 131 and the second electrode 132, and the first electrode 131 and the second electrode 132 have opposite electricities. The first electrode 131 is electrostatically driven to approach or depart from the second electrode 132.

[0050] In the embodiment of the present application, the driving mechanism 130 utilizes the attraction between two electrodes with opposite charges. By controlling the number of charges, the linear movement of the first electrode 131 relative to the second electrode 132 can be controlled. The first electrode 131 drives the elastic membrane 115 to move, the elastic membrane 115 deforms, the volume of the first cavity 1111 is changed, and thus the hydraulic pressure intensity on one side of the light-transmitting membrane 120 is changed. The structure of the driving mechanism 130 is simple, the power consumption is low, and the response time is fast, which is beneficial to rapid focusing operation.

[0051] In some embodiments, refer to Figure 4, the first cavity 1111 is located outside the second cavity 1112, and the first cavity 1111 is arranged around the second cavity 1112. Along the direction perpendicular to the optical path transmission, the cross-sectional shape of the first cavity 1111 is annular. The first cavity 1111 is located outside the second cavity 1112 and is arranged to surround the second cavity 1112. The first cavity 1111 is arranged along the circumferential direction of the second cavity 1112, which does not affect the imaging of the second cavity 1112, and the structures of the first cavity 1111 and the second cavity 1112 are compact, occupying a small space.

[0052] In some embodiments, refer to Figure 4 , along the optical path transmission direction, the elastic membrane 115 is located at one end of the first cavity 1111, and the second electrode 132 is located at the other end of the first cavity 1111. The elastic membrane 115 and the first electrode 131 are annular, and the elastic membrane 115 is arranged around the second cavity 1112. The shape of the elastic membrane 115 is adapted to the shape of the first electrode 131. The elastic membrane 115 and the first electrode 131 are fixed by gluing.

[0053] In the embodiments of the present application, the shapes of the elastic membrane 115 and the first electrode 131 are both annular. The first electrode 131 drives the elastic membrane 115 to move as a whole, ensuring uniform force on the elastic membrane 115, reducing the occurrence of damage to the elastic membrane 115 due to local force, and improving the reliability of the elastic membrane 115.

[0054] In some embodiments, refer to Figure 4 , the first electrode 131 is fixed on the side of the elastic membrane 115 facing away from the first cavity 1111. The first electrode 131 is fixed on the outside of the elastic membrane 115 by gluing, and the second electrode 132 is fixed on the body 110.

[0055] In the embodiments of the present application, the first electrode 131 is arranged outside the elastic membrane 115, avoiding contact between the first electrode 131 and the transparent liquid, protecting the first electrode 131, improving the service life of the first electrode 131, and facilitating the replacement and maintenance of the first electrode 131.

[0056] In other embodiments, the first electrode 131 is fixed on the side of the elastic membrane 115 close to the first cavity 1111. The first electrode 131 is located inside the first cavity 1111. Anticorrosion treatment is performed on the surface of the first electrode 131 to protect the first electrode 131.

[0057] In some embodiments, refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8, on the body 110, there are side walls 1113 that form a first cavity 1111 and a second cavity 1112. The side walls 1113 are located between the first cavity 1111 and the second cavity 1112, and the first cavity 1111 and the second cavity 1112 share the side walls 1113. The side walls 1113 are provided with a plurality of microchannel structures 112, and the microchannel structures 112 communicate the first cavity 1111 and the second cavity 1112. The inner diameter of the microchannel structures 112 is 5 mm. The microchannel structures 112 are realized by 3D printing fused deposition modeling, or can also be formed by DIW (Direct Ink Writing).

[0058] In the embodiments of the present application, the first cavity 1111 and the second cavity 1112 share the side walls 1113, reducing the volume of the body 110, which is beneficial to realizing a small or micro liquid lens 100. The first cavity 1111 and the second cavity 1112 are communicated through a plurality of microchannel structures 112. The effective area of the transparent liquid passing through the microchannel structures 112 is reduced, absorbing kinetic energy, reducing pressure energy, and reducing the impact of the transparent liquid flow channel on the light-transmitting film 120, ensuring the stable operation of the liquid lens 100.

[0059] In some embodiments, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 , the second cavity 1112 is arranged around the first cavity 1111, and the microchannel structures 112 are uniformly arranged along the circumferential direction of the second cavity 1112. The microchannel structures 112 are dispersedly arranged and uniformly arranged along the circumferential direction of the second cavity 1112. The flow rate of the transparent liquid is uniform, and the flow rates of the transparent liquid flowing into the second cavity 1112 from different microchannel structures 112 are counteracted, reducing the impact of the transparent liquid flow channel on the light-transmitting film 120, ensuring the stable operation of the liquid lens 100.

[0060] In some embodiments, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 , the microchannel structure 112 is a curved channel. The curved channel is arranged in an "S" shape, and the curve of the curved channel satisfies a high-order term function.

[0061] In the embodiments of the present application, the microchannel structure 112 is designed as a curved channel. The curved channel reduces liquid impact, slows down the liquid flow rate, reduces the impact of the liquid on the light-transmitting film 120, and the liquid lens 100 operates smoothly.

[0062] In some embodiments, the elasticity of the light-transmitting film 120 is less than that of the elastic film 115. The elastic film 115 is supported by a rubber polymer material. The elasticity of the elastic film 115 is large, with a large curvature change and a large hydraulic adjustment range. The elasticity of the light-transmitting film 120 is small, and the deformation amplitude of the light-transmitting film 120 is small, which is beneficial to realizing continuous focusing.

[0063] In some embodiments, the dielectric constant of the transparent liquid is Q, where Q > 10. The transparent liquid is a high-dielectric-constant liquid, and the high-dielectric-constant liquid has a large refractive index and good focusing effect.

[0064] In some embodiments, referring to Figure 4 , the body 110 includes a cylinder 116, a first transparent cover 117, and a second transparent cover 118. The cylinder 116 is cylindrical. The cylinder 116 can be made of a metal material. The cylinder 116 is formed with a channel 1161 passing through the axis of the cylinder 116, and a groove 1162 with one end open is formed on the cylinder 116. The elastic film 115 is disposed on the cylinder 116, and the elastic film 115 is hermetically connected to the end of the cylinder 116. The elastic film 115 seals the opening, and the cylinder 116 and the elastic film 115 enclose a first cavity 1111. The light-transmitting film 120 is fixed on the cylinder 116, and the light-transmitting film 120 seals both ends of the channel 1161. For example, the first light-transmitting film 121 is located at one end of the channel 1161, and the first light-transmitting film 121 is hermetically connected to the cylinder 116. The second light-transmitting film 122 is located at the other end of the channel 1161, and the second light-transmitting film 122 is hermetically connected to the cylinder 116. The light-transmitting film 120 and the cylinder 116 enclose a second cavity 1112. The first transparent cover 117 and the second transparent cover 118 are glass covers. The first transparent cover 117 is located at one end of the cylinder 116, and the first transparent cover 117 is hermetically connected to the cylinder 116. The first transparent cover 117 and the light-transmitting film 120 on its side enclose a third cavity 1131. The second transparent cover 118 is located at the other end of the cylinder 116, and the second transparent cover 118 is hermetically connected to the cylinder 116. The second transparent cover 118 and the light-transmitting film 120 on its side enclose a fourth cavity 1132.

[0065] In the embodiments of the present application, the body 110 includes a cylinder 116, a first transparent cover 117, and a second transparent cover 118. The first transparent cover 117 and the second transparent cover 118 are of an integral structure, with good sealing performance and will not affect the passage of light. The cylinder 116, the first transparent cover 117, and the second transparent cover 118 are reasonably arranged and easy to assemble.

[0066] In some embodiments, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, the main body 110 further includes two gland covers 119, and both of the two gland covers 119 include a connecting portion 1191 and a pressing portion 1192. The pressing portion 1192 is disposed at one end of the connecting portion 1191 away from the cylinder body 116, and the pressing portion 1192 is fixedly connected to the connecting portion 1191. The connecting portion 1191 is in a cylindrical shape, and the pressing portion 1192 is in an annular shape. The connecting portion 1191 is fixedly connected to the cylinder body 116 by bolts, and the pressing portion 1192 and the cylinder body 116 clamp and fix the first transparent cover 117 or the second transparent cover 118. This facilitates the assembly of the first transparent cover 117 and the second transparent cover 118 with the cylinder body 116, ensures the connection strength between the first transparent cover 117 and the second transparent cover 118 and the cylinder body 116, and meets the requirements of air pressure changes.

[0067] In some embodiments, the air pressure regulating device is a gas charging and discharging device, and the gas charging and discharging device is configured to respectively charge and discharge gas into and from the third cavity 1131 and the fourth cavity 1132.

[0068] Exemplarily, air inlet and outlet ports are provided on both the first transparent cover 117 and the second transparent cover 118, and the air inlet and outlet ports are communicated with the gas charging and discharging device. The gas charging and discharging device is an air inflator, which has a simple structure and is convenient to operate.

[0069] In some embodiments, the air pressure regulating device includes a heating mechanism and a cooling mechanism. The heating mechanism is configured to respectively raise the temperature of the gas in the third cavity 1131 and the fourth cavity 1132, and the cooling mechanism is configured to respectively lower the temperature of the gas in the third cavity 1131 and the fourth cavity 1132. Heating mechanisms and cooling mechanisms are provided on both the first transparent cover 117 and the second transparent cover 118. Among them, the refrigeration mechanism can be a thermoelectric cooler, and the heating mechanism can be a heating sheet.

[0070] In the embodiments of the present application, a certain amount of gas is filled in the third cavity 1131 and the fourth cavity 1132. At normal temperature, the air pressure is balanced with the hydraulic pressure, and the light-transmitting film 120 is horizontal. When the temperature in the third cavity 1131 and the fourth cavity 1132 rises, the air pressure increases. If the air pressure is greater than the hydraulic pressure, the light-transmitting film 120 is concave; when the temperature in the third cavity 1131 and the fourth cavity 1132 drops, the air pressure decreases. If the air pressure is less than the hydraulic pressure, the light-transmitting film 120 bulges. Adjusting the concavity or convexity of the light-transmitting film 120 according to the temperature is simple in operation, compact in structure, and is beneficial to the miniaturized design of the liquid lens.

[0071] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the embodiments of the present application further provide an electronic terminal, including a liquid lens 100. The electronic terminal can be a device such as a smart phone or a tablet computer. The electronic terminal has the same technical effects as the liquid lens 100, which will not be elaborated here.

[0072] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0073] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0074] The embodiments, implementation manners and related technical features of the present application can be combined and replaced with each other without conflict.

[0075] The above are only the preferred embodiments of the present application and do not impose any form of limitation on the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A liquid lens (100), characterized in that: include: Light-transmitting film (120); A body (110), wherein the body (110) and the light-transmitting film (120) enclose a liquid cavity (111) and two gas cavities (113), wherein the liquid cavity (111) is located between the two gas cavities (113), and the gas cavity (113) is separated from the liquid cavity (111) by the light-transmitting film (120), the liquid cavity (111) is used to be filled with a transparent liquid, and the gas cavity (113) is used to be filled with a gas, and a portion of the side wall of the body (110) forming the liquid cavity (111) is an elastic film (115); a driving mechanism (130), disposed on the body (110) and connected to the elastic membrane (115), wherein the driving mechanism (130) is configured to drive the elastic membrane (115) to deform so as to adjust the volume of the liquid chamber (111); A gas pressure regulating device is configured to regulate the gas pressure of the gas chamber (113).

2. The liquid lens (100) according to claim 1, characterized in that: The liquid cavity (111) comprises a first cavity (1111) and a second cavity (1112), the first cavity (1111) is connected to the second cavity (1112), the second cavity (1112) is located between the two gas cavities (113), and a part of the side wall of the main body (110) that forms the first cavity (1111) is the elastic membrane (115).

3. The liquid lens (100) according to claim 2, characterized in that: The driving mechanism (130) comprises a first electrode (131) and a second electrode (132), wherein the first electrode (131) is fixed on the elastic membrane (115), the first electrode (131) and the second electrode (132) are arranged relative to each other and spaced apart, the second electrode (132) is fixedly connected to the body (110), the first electrode (131) and the second electrode (132) have opposite electrical properties, and the first electrode (131) is electrostatically driven to approach or move away from the second electrode (132).

4. The liquid lens (100) according to claim 3, characterized in that: The first cavity (1111) is located outside the second cavity (1112), and the first cavity (1111) is arranged around the second cavity (1112).

5. The liquid lens (100) according to claim 4, characterized in that: Along the transmission direction of the light path, the elastic membrane (115) is located at one end of the first cavity (1111), and the second electrode (132) is located at the other end of the first cavity (1111). The elastic membrane (115) and the first electrode (131) are annular, and the elastic membrane (115) is arranged around the second cavity (1112).

6. The liquid lens (100) according to claim 5, characterized in that: The first electrode (131) is fixed to a side of the elastic membrane (115) facing away from the first cavity (1111).

7. The liquid lens (100) according to claim 2, characterized in that: The body (110) is provided with a side wall (1113) for forming the first cavity (1111) and the second cavity (1112); the side wall (1113) is located between the first cavity (1111) and the second cavity (1112); a plurality of microchannel structures (112) are provided on the side wall (1113); the first cavity (1111) and the second cavity (1112) are connected via the microchannel structures (112).

8. The liquid lens (100) according to claim 7, characterized in that: The microchannel structure (112) is a curved channel.

9. The liquid lens (100) according to claim 1, characterized in that: The elasticity of the light-transmitting film (120) is smaller than the elasticity of the elastic film (115).

10. The liquid lens (100) according to any one of claims 1 to 9, characterized in that: The dielectric constant of the transparent liquid is Q, wherein Q>10.

11. The liquid lens (100) according to any one of claims 2 to 8, characterized in that: The body (110) comprises: A cylinder (116), wherein the cylinder (116) is formed with a channel (1161) penetrating the axis of the cylinder (116), and a groove (1162) with an opening at one end is provided on the cylinder (116), the elastic membrane (115) is arranged on the cylinder (116), the elastic membrane (115) blocks the opening, the cylinder (116) and the elastic membrane (115) enclose the first cavity (1111), the light-transmitting membrane (120) is fixed on the cylinder (116), the light-transmitting membrane (120) blocks the two ends of the channel (1161), and the light-transmitting membrane (120) and the cylinder (116) enclose the second cavity (1112); A first transparent cover (117) is located at one end of the cylinder (116), the first transparent cover (117) is sealedly connected to the cylinder (116), and the first transparent cover (117) and the light-transmitting film (120) on the side thereof form the gas cavity (113); The second transparent cover (118) is located at the other end of the cylinder (116). The second transparent cover (118) is sealedly connected to the cylinder (116). The second transparent cover (118) and the light-transmitting film (120) on the side thereof form another gas cavity (113).

12. The liquid lens (100) according to any one of claims 1 to 9, characterized in that: The air pressure regulating device is an air-inflating and air-deflating device, and the air-inflating and air-deflating device is configured to inflate or deflate the two gas chambers (113) respectively.

13. The liquid lens (100) according to any one of claims 1 to 9, characterized in that: The gas pressure regulating device comprises a heating mechanism and a cooling mechanism, wherein the heating mechanism is configured to heat the gas in the two gas cavities (113) respectively, and the cooling mechanism is configured to cool the gas in the two gas cavities (113) respectively.

14. An electronic terminal, characterized in that: Comprising the liquid lens (100) according to any one of claims 1 to 13.

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