Lens adjusting method, dual-mode liquid lens and lens adjusting system

Abstract

The invention provides a lens adjusting method, a dual-mode liquid lens and a lens adjusting system, and the method comprises the following modes: a single-liquid mode: injecting a liquid A into a cavity A, and pushing a light-transmitting elastic film through the liquid A, so as to enable the light-transmitting elastic film to deform towards a cavity B; or the liquid A in the cavity A is discharged, so that the light-transmitting elastic film deforms towards the direction of the cavity A; in the double-liquid mode, the liquid B is injected into the cavity B, meanwhile, the liquid A in the cavity A is discharged, and the light-transmitting elastic film faces the direction of the cavity A; or the liquid A is injected into the cavity A, and meanwhile, the liquid B in the cavity B is discharged, so that the light-transmitting elastic film deforms towards the direction of the cavity B. According to the invention, a single-liquid mode is added, the zooming range is obviously enlarged, or the structure size can be reduced under the requirement of the same zooming range.

Description

Technical Field

[0001] The present application relates to the technical field of liquid lenses, and in particular to a lens adjustment method, a dual-mode liquid lens, and a lens adjustment system. Background Art

[0002] Liquid lens is an optical element that uses liquid as a lens, that is, it uses liquid to refract light. It is mainly composed of transparent liquid and deformable boundaries, and different optical effects are achieved by adjusting the shape and curvature of the liquid. A significant advantage of liquid lens is its adjustable focal length. Users can quickly adjust the focal length by changing the shape of the liquid, achieving focal length changes in a relatively short time to meet the needs of different application scenarios.

[0003] However, the defect of the above-mentioned liquid lens is that it will be affected by gravity. Gravity will cause the shape of the liquid lens to change, making it asymmetrical up and down, failing to achieve the ideal curved surface required by optics, resulting in a decrease in imaging quality that is inferior to that of ordinary lenses.

[0004] To solve the above problems, dual liquid zoom lenses have appeared on the market. Dual liquid zoom lenses are composed of two liquids with different refractive indices but similar densities. The two are separated by a light-transmitting elastic membrane. When light is emitted from one liquid to the other, it will refract to achieve the effect of the lens. By changing the volume of the liquids on both sides, a pressure difference can be generated to cause the light-transmitting elastic membrane in the middle to deform, thereby changing the focal length of the lens. Because the density of the two liquids is similar, they can offset the influence of gravity, thereby achieving better imaging quality while achieving zoom.

[0005] However, since the refractive power of a lens is determined by both the refractive index difference and the curvature, and the refractive index difference between two liquids of the same density is small, its focusing range is smaller than that of an ordinary single-liquid variable focus lens. Summary of the invention

[0006] The present invention provides a lens adjustment method, a dual-mode liquid lens and a lens adjustment system to solve the problems existing in the related art. The technical solution is as follows:

[0007] In a first aspect, the present invention provides a lens adjustment method, which can realize adjustment in two modes: a single-liquid mode and a double-liquid mode.

[0008] The present invention provides a lens adjustment method, comprising the following modes:

[0009] Single liquid mode: inject liquid A into chamber A, use liquid A to push the light-transmitting elastic membrane, so that the light-transmitting elastic membrane is deformed in the direction of chamber B; or, discharge liquid A in chamber A, so that the light-transmitting elastic membrane is deformed in the direction of chamber A;

[0010] Dual liquid mode: inject liquid B into chamber B and, at the same time, discharge liquid A from chamber A to deform the light-transmitting elastic membrane toward chamber A; or, inject liquid A into chamber A and, at the same time, discharge liquid B from chamber B to deform the light-transmitting elastic membrane toward chamber B.

[0011] The chamber A and the chamber B are two cavities that allow light to pass through. The chamber A and the chamber B are separated by a light-transmitting elastic membrane. The shapes of the chamber A and the chamber B change with the deformation of the light-transmitting elastic membrane.

[0012] In the single liquid mode, the diopter of the lens is mainly determined by the liquid lens formed by the liquid in chamber A. When the elastic membrane is deformed toward chamber B, the liquid in chamber A becomes convex, thereby increasing the diopter of the liquid lens formed by it. When the elastic membrane is deformed toward chamber A, the liquid in chamber A becomes concave, thereby reducing the diopter of the liquid lens formed by it. By controlling the deformation of the elastic membrane, a zoom effect is achieved.

[0013] In the dual-liquid mode, the refractive power of the lens is mainly determined by the liquid lens formed by the liquid in chamber A and the liquid lens formed by the liquid in chamber B.

[0014] When the elastic membrane deforms toward chamber B, the liquid in chamber A becomes convex, thereby increasing the diopter of the liquid lens it forms; at the same time, the liquid in chamber B becomes concave, thereby decreasing the diopter of the liquid lens it forms. Since the refractive indices of liquid A and liquid B are different, the increase and decrease amplitudes of the two are different, so the total diopter will also change, thereby achieving a zoom effect.

[0015] Similarly, when the elastic membrane deforms toward chamber A, the liquid in chamber B becomes convex, thereby increasing the diopter of the liquid lens it forms; at the same time, the liquid in chamber A becomes concave, thereby decreasing the diopter of the liquid lens it forms. Therefore, the total diopter will also change, thereby achieving a zoom effect.

[0016] The invention provides a lens adjustment method, which can realize the switching between two modes, thereby obtaining a larger zoom range.

[0017] In one embodiment, the following switching method is included:

[0018] In the single-liquid mode, liquid A is injected into chamber A to deform the light-transmitting elastic membrane toward chamber B. When the volume of chamber B is reduced to the minimum, the mode is switched to discharge liquid A and allow fluid B to enter chamber B.

[0019] In the dual-liquid mode, liquid A is injected into chamber A, and liquid B is discharged from chamber B at the same time. After the volume of chamber B is reduced to the minimum, the mode is switched to prevent liquid B from entering chamber B and discharge liquid A.

[0020] In a second aspect, the present invention provides a dual-mode liquid lens, comprising:

[0021] case;

[0022] A first light-transmitting lens, wherein the first light-transmitting lens is disposed on a first end of the housing along a first direction;

[0023] A second light-transmitting lens, the second light-transmitting lens being disposed on a second end of the housing along the first direction; and

[0024] A light-transmitting elastic film, the light-transmitting elastic film is arranged between the first light-transmitting lens and the second light-transmitting lens;

[0025] A chamber A is formed between the light-transmitting elastic membrane, the shell and the first light-transmitting lens, and the chamber A is connected to a first liquid opening, and the first liquid opening is used to supply liquid A to enter and exit the chamber A. A chamber B is formed between the light-transmitting elastic membrane, the shell and the second light-transmitting lens, and the chamber B is connected to a second liquid opening and a fluid opening, and the second liquid opening is used to supply liquid B to enter and exit the chamber B, and the fluid opening is used to supply fluid C to enter and exit the chamber B, so that the chamber B is filled with different media or is not filled with media, so that the dual-mode liquid lens can switch between a single-liquid mode and a dual-liquid mode, wherein the liquid A and liquid B have different refractive indices, and the fluid C and liquid B have different refractive indices.

[0026] It can be understood that the AB is just for convenience of expression and does not specify what kind of medium must be in a certain direction.

[0027] In one embodiment, the fluid C is a gas.

[0028] The gas can be any gas of any pressure and density. In particular, when the pressure and density approach 0, it is a vacuum state.

[0029] In one embodiment, the chamber B may not be filled with a medium, that is, it is in a vacuum state.

[0030] In one embodiment, the shell has a light-transmitting hole, the light-transmitting hole extends along the first direction, and the first light-transmitting lens, the light-transmitting elastic membrane and the second light-transmitting lens are all arranged in the light-transmitting hole and arranged in sequence along the light-transmitting hole.

[0031] In one embodiment, the first liquid opening, the second liquid opening and the fluid opening are all provided on the shell.

[0032] In one embodiment, the Liquid A and the Liquid B have the same density.

[0033] In one embodiment, the liquid A is a liquid with a lower refractive index, and the liquid B is a liquid with a higher refractive index.

[0034] In one embodiment, the number of chambers A may be one or more.

[0035] In one embodiment, the number of chambers B may be one or more.

[0036] In one embodiment, there may be multiple light-transmitting lenses and multiple light-transmitting elastic films.

[0037] In a third aspect, the present invention provides a lens adjustment system, comprising:

[0038] The dual-mode liquid lens described above; and

[0039] A liquid control device, which is used to change the amount of liquid in the chamber A or the chamber B.

[0040] In one embodiment, the liquid control device comprises:

[0041] a first liquid delivery pipe, the first liquid delivery pipe being in communication with the first liquid opening;

[0042] a first piston, the first piston being movably inserted into the first liquid delivery pipe along an axial direction of the first liquid delivery pipe, the first piston being used to inject liquid A from the first liquid delivery pipe into the chamber A or to extract liquid A from the chamber A into the first liquid delivery pipe;

[0043] a second liquid delivery pipe, the second liquid delivery pipe being in communication with the second liquid opening;

[0044] a second piston, the second piston being movably inserted into the second liquid delivery pipe along an axial direction of the second liquid delivery pipe, the second piston being used to inject liquid B from the second liquid delivery pipe into the chamber B or to extract liquid B from the chamber B into the second liquid delivery pipe;

[0045] A driving device is connected to the first piston and the second piston, and is used to drive the first piston and the second piston to move.

[0046] In one embodiment, the driving device comprises:

[0047] a first rack, the first rack being movably arranged along a moving direction of the first piston, and the first rack being connected to the first piston;

[0048] a second rack, the second rack being movably arranged along a moving direction of the second piston, the second rack being connected to the second piston;

[0049] A driver for generating a driving force;

[0050] A driving gear, the driving gear is connected to the output end of the driver, the driving gear can rotate along with the output end of the driver, and the driving gear is meshed with the first rack;

[0051] a driven gear meshing with the second rack;

[0052] an intermediate gear, the intermediate gear being located between the driving gear and the driven gear, the intermediate gear being movably arranged, the intermediate gear having an engaged state in which the intermediate gear is engaged with the driving gear and the driven gear, and a non-engaged state in which the intermediate gear is disengaged from the driving gear and the driven gear, the intermediate gear being movable to switch between the engaged state and the non-engaged state; and

[0053] A linkage mechanism is connected to the intermediate gear, and the linkage mechanism is used to drive the intermediate gear to move.

[0054] In one embodiment, the intermediate gear is movably arranged along its axial direction;

[0055] The linkage mechanism comprises:

[0056] an elastic member, the elastic member being connected to the intermediate gear, and the elastic member being used to provide a restraining force for the intermediate gear to maintain the non-meshing state;

[0057] a conductor, wherein the conductor is disposed on the intermediate gear; and

[0058] An electromagnet is used to be connected to a power source. When the electromagnet is powered on, the electromagnet generates a suction force that overcomes the restraining force and attracts the conductor, so that the intermediate gear switches from the meshing state or the non-meshing state to another state. When the electromagnet is powered off, the elastic member resets and restores the intermediate gear to its original state.

[0059] In one embodiment, the liquid control device comprises:

[0060] a first liquid delivery pipe, the first liquid delivery pipe being in communication with the first liquid opening;

[0061] a first piston, the first piston being movably inserted into the first liquid delivery pipe along an axial direction of the first liquid delivery pipe, the first piston being used to inject liquid A from the first liquid delivery pipe into the chamber A or to extract liquid A from the chamber A into the first liquid delivery pipe;

[0062] A driving device, the driving device is connected to the first piston, and the driving device is used to drive the first piston to move;

[0063] a second liquid delivery pipe, the second liquid delivery pipe being in communication with the second liquid opening;

[0064] A valve body is arranged at the fluid opening, and the valve body is used to control the opening and closing of the fluid opening.

[0065] The advantages or beneficial effects of the above technical solution include at least:

[0066] The lens adjustment method, dual-mode liquid lens and lens adjustment system of the present invention have the following advantages: since chamber A is connected to the first liquid opening, the first liquid opening can supply liquid A to enter and exit chamber A, so that chamber A can be filled with liquid A to form liquid lens A and liquid A in chamber A can be discharged; at the same time, since chamber B is connected to the second liquid opening and the fluid opening, the second liquid opening can supply liquid B to enter and exit chamber B, so that chamber B can be filled with liquid B to form liquid lens B and liquid B in chamber B can be discharged; the liquid lens B and the liquid lens A form a dual-liquid mode liquid lens, and the optical properties of the dual-liquid mode liquid lens are similar to those of a dual-liquid zoom lens.

[0067] The fluid opening can allow fluid C to enter and exit chamber B, so that chamber B can be filled with fluid C and fluid C in chamber B can be discharged. When fluid C is a gas, and when chamber B is filled with fluid C or the fluid in chamber B is completely discharged to form a vacuum state, the refractive index in chamber B is close to 1. At this time, when chamber A is filled with liquid A, a liquid lens in a single-liquid mode is formed, and when light is incident from fluid C into the liquid, it will be refracted to achieve the effect of a lens. Among them, since the refractive index in chamber B and the refractive index of the liquid are greater than the refractive index difference between the two liquids, the refractive ability of the dual-mode liquid lens can be improved, and the focusing range is also significantly increased. In summary, the dual-mode liquid lens involved has a single-liquid mode and a dual-liquid mode, and can switch between the single-liquid mode and the dual-liquid mode. The single-liquid mode and the dual-liquid mode respectively control a zoom range, thereby improving the control accuracy. Compared with the existing dual-liquid zoom lens, the dual-mode liquid lens has a single-liquid mode at almost the same structural size, thereby significantly expanding the zoom range, or, at the same zoom range requirement, the dual-mode liquid lens can reduce the structural size.

[0068] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0070] Figure 1 It is a schematic diagram of the three-dimensional structure of the dual-mode liquid lens of the present invention at a first viewing angle;

[0071] Figure 2 is a schematic diagram of the three-dimensional structure of the dual-mode liquid lens of the present invention at a second viewing angle;

[0072] Figure 3 is a cross-sectional view of the dual-mode liquid lens of the present invention at a second viewing angle, wherein the dual-mode liquid lens is in an initial state;

[0073] Figure 4 is a cross-sectional view of the dual-mode liquid lens of the present invention at a second viewing angle;

[0074] Figure 5 is a cross-sectional view of the dual-mode liquid lens of the present invention at a second viewing angle;

[0075] Figure 6 is a cross-sectional view of the dual-mode liquid lens of the present invention at a second viewing angle;

[0076] Figure 7 is a cross-sectional view of the dual-mode liquid lens of the present invention at a second viewing angle;

[0077] Figure 8 is a schematic diagram of the three-dimensional structure of the lens adjustment system of the present invention;

[0078] Fig. 9 It is a schematic diagram of the three-dimensional structure of the intermediate gear and the elastic member in the lens adjustment system of the present invention assembled together.

[0079] Reference numerals

[0080] 1. Shell; 11. First liquid opening; 12. Second liquid opening; 13. Fluid opening; 2. First light-transmitting lens; 3. Second light-transmitting lens; 4. Light-transmitting elastic membrane; 5. Chamber A; 6. Chamber B; 7. Liquid control device; 71. First liquid delivery pipe; 72. First piston; 73. First rack; 74. Second liquid delivery pipe; 75. Second piston; 76. Second rack; 77. Driving gear; 78. Driven gear; 79. Intermediate gear; 710. Elastic member; 720. Tenon. DETAILED DESCRIPTION

[0081] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0082] See also Figure 1-Figure 7 A preferred embodiment of the present invention provides a dual-mode liquid lens, comprising:

[0083] Shell 1;

[0084] A first light-transmitting lens 2, which is disposed on a first end of the housing 1 along a first direction;

[0085] A second light-transmitting lens 3, which is disposed on a second end of the housing 1 along the first direction; and

[0086] A light-transmitting elastic membrane 4 is provided between the first light-transmitting lens 2 and the second light-transmitting lens 3. A chamber A5 is formed between the light-transmitting elastic membrane 4, the shell 1 and the first light-transmitting lens 2. The chamber A5 is connected with a first liquid opening 11. The first liquid opening 11 is used to supply liquid A to enter and exit the chamber A5. A chamber B6 is formed between the light-transmitting elastic membrane 4, the shell 1 and the second light-transmitting lens 3. The chamber B6 is connected with a second liquid opening 12 and a fluid opening 13. The second liquid opening 12 is used to supply liquid B to enter and exit the chamber B6. The fluid opening 13 is used to supply fluid C to enter and exit the chamber B6, so that the chamber B6 is filled with different media or is not filled with media, so that the dual-mode liquid lens can switch between a single-liquid mode and a dual-liquid mode, wherein the refractive indexes of liquid A and liquid B are different, and the refractive indexes of fluid C and liquid B are different.

[0087] The dual-mode liquid lens of the present invention has chamber A5 connected to the first liquid opening 11, and the first liquid opening 11 can supply liquid A to enter and exit chamber A5, so that chamber A5 can be filled with liquid A to form liquid lens A and liquid A in chamber A5 can be discharged. At the same time, since chamber B6 is connected to the second liquid opening 12 and the fluid opening 13, the second liquid opening 12 can supply liquid B to enter and exit chamber B6, so that chamber B6 can be filled with liquid B to form liquid lens B and liquid B in chamber B6 can be discharged. The liquid lens B and the liquid lens A form a dual-liquid mode liquid lens. The optical properties of the dual-liquid mode liquid lens are similar to those of a dual-liquid zoom lens. The fluid opening 13 can supply fluid C to enter and exit chamber B6, so that chamber B6 can be filled with fluid C and fluid C in chamber B6 can be discharged. When chamber B6 is filled with fluid C and chamber A5 is filled with liquid A, a liquid lens in a single-liquid mode is formed. When light is incident from fluid C into the liquid, it will be refracted to achieve the effect of a lens. Since the refractive index of fluid C and the liquid is greater than the refractive index difference between the two liquids, the refractive ability of the dual-mode liquid lens can be improved, and the focusing range is also significantly increased. In summary, the dual-mode liquid lens has a single-liquid mode and a dual-liquid mode, and can switch between the single-liquid mode and the dual-liquid mode. The single-liquid mode and the dual-liquid mode respectively control a zoom range, thereby improving the control accuracy. Compared with the existing dual-liquid zoom lens, the dual-mode liquid lens has a single-liquid mode at almost the same structural size, thereby significantly expanding the zoom range, or, at the same zoom range requirement, the dual-mode liquid lens can reduce the structural size.

[0088] It can be understood that the ABC is just for convenience of expression and does not specify what kind of medium must be in a certain direction.

[0089] In one embodiment, the fluid C is a gas so that the dual-mode liquid lens can be switched between a single-liquid mode and a dual-liquid mode.

[0090] The gas can be any gas of any pressure and density. In particular, when the pressure and density approach 0, it is a vacuum state.

[0091] In one embodiment, the chamber B may not be filled with a medium, that is, it is in a vacuum state.

[0092] Of course, in other embodiments, fluid C may also be a liquid different from liquid B.

[0093] In one embodiment, the number of chambers A5 may be one, or two or more, and may be set according to actual needs.

[0094] In one embodiment, the number of chambers B6 may be one, or two or more, and may be set according to actual needs.

[0095] In one embodiment, the number of the first liquid openings 11 may be one, or two or more, and may be set according to actual needs.

[0096] In one embodiment, the number of the second liquid opening 12 and the fluid opening 13 can be one or two or more, which can be set according to actual needs.

[0097] In one embodiment, the number of light-transmitting lenses may be two, or three or more, and may be set according to actual needs.

[0098] In one embodiment, the number of the cavity light-transmitting elastic membranes may be one, or may be two or more, and may be set according to actual needs.

[0099] In one embodiment, the actual thickness of the light-transmitting elastic film 4 should be a thin film not exceeding 600 μm, so that the light-transmitting elastic film 4 has better elastic properties and the deformation difficulty of the light-transmitting elastic film 4 is reduced.

[0100] In one embodiment, the light-transmitting elastic film 4 is a structure made of a transparent PDMS (polydimethylsiloxane) material, and the housing 1 is a structure made of an epoxy resin material.

[0101] In one embodiment, the fluid C may include gas at any pressure and density. In particular, the chamber B may also include a vacuum condition.

[0102] In one embodiment, the shell 1 has a light-transmitting hole extending along a first direction, and the first light-transmitting lens 2, the light-transmitting elastic membrane 4, and the second light-transmitting lens 3 are all arranged in the light-transmitting hole and arranged in sequence along the light-transmitting hole. In this way, when light passes through the first light-transmitting lens 2 and is incident on liquid A to liquid B, it will be refracted (at this time, the dual-mode liquid lens is in a dual-liquid mode), or when light passes through the first light-transmitting lens 2 and is incident on liquid A to fluid C, it will be refracted (at this time, the dual-mode liquid lens is in a single-liquid mode), so as to achieve the effect of the lens.

[0103] See also Figure 1 In one embodiment, the first liquid opening 11, the second liquid opening 12 and the fluid opening 13 are all arranged on the shell 1, that is, by opening the first liquid opening 11, the second liquid opening 12 and the fluid opening 13 on the shell 1, the processing difficulty of the first liquid opening 11, the second liquid opening 12 and the fluid opening 13 can be reduced.

[0104] Of course, in other embodiments, the first liquid opening 11 may be disposed on the first light-transmitting lens 2 , and the second liquid opening 12 and the fluid opening 13 may be disposed on the second light-transmitting lens 3 .

[0105] In one embodiment, liquid A and liquid B have the same density, so that the liquids in the dual-mode liquid lens chamber A5 and chamber B6 will not be affected by gravity and flow significantly, and thus are not easy to squeeze the light-transmitting elastic membrane 4, thereby preventing the surface shape of the light-transmitting elastic membrane 4 from being affected, and the optical axis is relatively stable, so the imaging effect and imaging stability are better. It can be understood that the same density of liquid A and liquid B can be understood as the density of liquid A and liquid B tending to be similar.

[0106] In one embodiment, liquid A is a liquid with a lower refractive index, and liquid B is a liquid with a higher refractive index.

[0107] Of course, in other embodiments, liquid A is a liquid with a higher refractive index, and liquid B is a liquid with a lower refractive index.

[0108] In one embodiment, in addition to the refractive index and density mentioned above, the absolute density, viscosity and transparency are also important factors in the selection of liquid A and liquid B. Generally, the density and viscosity are as small as possible, and the transparency is as high as possible. Based on this standard:

[0109] Medium liquid A is water, the refractive index of water is about 1.33, the density is about 1g / cm^3, and the viscosity is usually 0.9mPa.s;

[0110] Liquid B is immersion oil, which is also a transparent liquid with a refractive index of 1.51, close to the performance of ordinary glass, a density of about 1.025g / cm^3, and a viscosity of 100-120mPa.s.

[0111] Since the density of water is still different from that of ordinary immersion oil, the density of water can be increased by adding a small amount of salt or other solutes to the water.

[0112] In one embodiment, the first light-transmitting lens 2 and the second light-transmitting lens 3 can be made of the same material, such as transparent optical resin, and processed into a desired shape, the shape of which should be determined by optical requirements.

[0113] See also Figure 8-Figure 9 In a second aspect, a preferred embodiment of the present invention provides a lens adjustment system, comprising:

[0114] The dual-mode liquid lens described above; and

[0115] The liquid control device 7 is used to change the amount of liquid in the chamber A5 or the chamber B6.

[0116] The lens adjustment system of the present invention, due to the adoption of the above-mentioned dual-mode liquid lens, also has a single-liquid mode and a dual-liquid mode, and can switch between the single-liquid mode and the dual-liquid mode. The single-liquid mode and the dual-liquid mode respectively control a zoom range, thereby improving the control accuracy. Compared with the existing dual-liquid zoom lens, the dual-mode liquid lens has a single-liquid mode added at a nearly identical structural size, thereby significantly expanding the zoom range. Alternatively, under the same zoom range requirement, the dual-mode liquid lens can reduce the structural size.

[0117] See also Figure 8-Figure 9 In one embodiment, the liquid control device 7 comprises:

[0118] A first liquid delivery pipe 71, wherein the first liquid delivery pipe 71 is connected to the first liquid opening 11;

[0119] A first piston 72, which is movably inserted into the first liquid delivery pipe 71 along the axial direction of the first liquid delivery pipe 71, and is used to inject liquid A from the first liquid delivery pipe 71 into the chamber A5 or to extract liquid A from the chamber A to the first liquid delivery pipe 71;

[0120] A second liquid delivery pipe 74, the second liquid delivery pipe 74 is connected to the second liquid opening 12;

[0121] a second piston 75, the second piston 75 being movably inserted into the second liquid delivery pipe 74 along the axial direction of the second liquid delivery pipe 74, and the second piston 75 being used to inject the liquid B from the second liquid delivery pipe 74 into the chamber B6 or to extract the liquid B from the chamber B into the second liquid delivery pipe 74;

[0122] The driving device is connected to the first piston 72 and the second piston 75, and is used to drive the first piston 72 and the second piston 75 to move. The liquid control device 7 only needs one set of driving devices to drive the first piston 72 and the second piston 75 to move, which can simplify the structure, make the lens adjustment system more compact and convenient to install, and at the same time, it can also reduce the cost of the lens adjustment system, which is more conducive to the promotion and application of the lens adjustment system.

[0123] In one embodiment, the drive device comprises:

[0124] A first rack, the first rack is movably arranged along the moving direction of the first piston, and the first rack is connected to the first piston;

[0125] A second rack, the second rack is movably arranged along the moving direction of the second piston, and the second rack is connected to the second piston;

[0126] A driver for generating a driving force;

[0127] A driving gear, which is connected to the output end of the driver and can rotate along with the output end of the driver, and is meshed with the first rack;

[0128] A driven gear meshing with the second rack;

[0129] An intermediate gear, which is located between the driving gear and the driven gear, is movably arranged, has an engaged state in which the driving gear is engaged with the driven gear, and a non-engaged state in which the driving gear and the driven gear are disengaged, and moves to switch between the engaged state and the non-engaged state; and

[0130] The linkage mechanism is connected with the intermediate gear, and the linkage mechanism is used to drive the intermediate gear to move.

[0131] Thus, when the dual-mode liquid lens is in the initial state where the chamber A5 is free of liquid A and the chamber B6 is filled with fluid C (see Figure 3 ), the linkage mechanism keeps the intermediate gear 79 in a non-meshing state, so that the output end of the driver rotates in the positive direction and drives the driving gear 77 to rotate in the positive direction, thereby driving the first rack 73 to move in the positive direction, so that the first piston 72 injects the liquid A into the chamber A5, so that the light-transmitting elastic membrane 4 is deformed toward the second light-transmitting lens 3 (see Figure 4-Figure 5 ); When the light-transmitting elastic film 4 is deformed to a certain extent, the linkage mechanism drives the intermediate gear 79 to move, so that the intermediate gear 79 moves to mesh with the driving gear 77 and the driven gear 78. At this time, the output end of the driver rotates in the opposite direction, driving the driving gear 77 to rotate in the opposite direction, the intermediate gear 79 to rotate forwardly, and the driven gear 78 to rotate in the opposite direction, thereby driving the first rack 73 to move in the opposite direction, so that the first piston 72 draws the liquid A out of the chamber A5, and at the same time, drives the second rack 76 to move in the opposite direction, so that the second piston 75 injects the liquid B into the chamber B6, so that the light-transmitting elastic film 4 is deformed toward the first light-transmitting lens 2 (see Figure 6); when the light-transmitting elastic membrane 4 is deformed to a certain extent, the output end of the driver rotates forward, driving the driving gear 77 to rotate forward, the intermediate gear 79 to rotate reversely, and the driven gear 78 to rotate forward, thereby driving the first rack 73 to move forward, so that the first piston 72 injects liquid A into the chamber A5, and at the same time, drives the second rack 76 to move forward, so that the second piston 75 extracts liquid B from the chamber B6 until the liquid B in the chamber B6 is completely emptied, and then the linkage mechanism drives the intermediate gear 79 to reset to a non-meshing state; finally, the output end of the driver rotates reversely, driving the driving gear 77 to rotate reversely, so that the first rack 73 moves reversely and drives the first piston 72 to extract the liquid A in the chamber A5, and at the same time, the fluid opening 13 is connected to the outside, so that the outside air flows into the chamber B6, that is, the dual-mode liquid lens is reset to the initial state (see Figure 7 ), the liquid control device 7 has a simple and practical structure, and the injection or extraction of liquid in chamber A5 and chamber B6 share the same set of drivers, which can simplify the structure and make the lens adjustment system more compact and convenient to install. At the same time, it can also reduce the cost of the lens adjustment system, which is more conducive to the promotion and application of the lens adjustment system.

[0132] In one embodiment, the intermediate gear 79 is movably arranged along its axial direction;

[0133] The linkage agencies include:

[0134] An elastic member 710, the elastic member 710 is connected to the intermediate gear 79, and the elastic member 710 is used to provide a restraining force for the intermediate gear 79 to maintain a non-meshing state;

[0135] A conductor, which is disposed on the intermediate gear 79; and

[0136] The electromagnet (not shown in the figure) is used to connect to the power supply. When the electromagnet is energized, the electromagnet generates a suction force that overcomes the constraint force and attracts the conductor, so that the intermediate gear 79 switches from a non-meshing state to a meshing state. When the electromagnet is powered off, the elastic member 710 resets and switches the intermediate gear 79 from the meshing state to the non-meshing state. This linkage mechanism has a simple and practical structure, low cost, and high reliability. At the same time, the overall structure is compact, which is conducive to further reducing the overall volume of the lens adjustment system and making it more convenient to install the lens adjustment system.

[0137] The conductor may specifically be the intermediate gear 79 itself, or a support shaft disposed on the center hole of the intermediate gear 79, or a conductor disposed on the support shaft.

[0138] See also Fig. 9In one embodiment, the elastic member 710 can be a spring, and the spring is sleeved on the support shaft. In addition, in order to limit the spring, a tenon 720 is provided on the support shaft. The tenon 720 and one end of the spring close to the intermediate gear 79 are engaged with each other to limit the spring from detaching from the support shaft.

[0139] Of course, in other embodiments, the linkage mechanism may also be a linear linkage mechanism such as an electric push rod, a pneumatic cylinder, or a hydraulic cylinder.

[0140] In one implementation, the driver may be a motor, or may be any one of a piezoelectric ceramic drive, an electromagnetic drive, and the like.

[0141] In one embodiment, the liquid control device 7 may also adopt the following scheme:

[0142] The liquid control device 7 comprises:

[0143] A first liquid delivery pipe 71, the first liquid delivery pipe 71 is connected to the first liquid opening 11;

[0144] A first piston 72, which is movably inserted into the first liquid delivery pipe 71 along the axial direction of the first liquid delivery pipe 71, and is used to inject liquid A from the first liquid delivery pipe 71 into the chamber A5 or to extract liquid A from the chamber A to the first liquid delivery pipe 71;

[0145] A driving device, the driving device is connected to the first piston 72, and the driving device is used to drive the first piston 72 to move;

[0146] A second liquid delivery pipe 74, the second liquid delivery pipe 74 is connected to the second liquid opening 12;

[0147] The valve body is arranged at the fluid opening 13, and is used to control the opening and closing of the fluid opening 13. In this way, when the dual-mode liquid lens is in the initial state where there is no liquid A in chamber A5 and fluid C is filled in chamber B6, there is air in chamber B6, and the driving device pushes the first piston 72 to inject liquid A into chamber A5, and at the same time controls the valve body to open, so that the fluid opening 13 of chamber B6 is opened and connected to the air, and the air is pushed outward by the deformation of chamber A5. As the light-transmitting elastic membrane 4 deforms toward the second light-transmitting lens 3, the diopter of the dual-mode liquid lens continues to increase; when the light-transmitting elastic membrane 4 is deformed to reach the boundary of the second light-transmitting lens 3, that is, the light-transmitting elastic membrane 4 is in contact with the second light-transmitting lens 3, the valve body is closed at this time, the fluid opening 13 is sealed, so as to cut off the connection between chamber B6 and the outside world, and the first liquid opening 11 is connected to the first liquid delivery pipe 7171, and the driving device The output end of the drive device is reversed to push the first piston 72 to extract the liquid A in the chamber A5, so that the light-transmitting elastic film 4 is deformed toward the first light-transmitting lens 2, a low pressure is formed in the chamber B6, and the liquid B enters the chamber B6; when the light-transmitting elastic film 4 is deformed to reach the boundary of the first light-transmitting lens 2, that is, the light-transmitting elastic film 4 is attached to the first light-transmitting lens 2, the output end of the drive device is re-rotated forward to push the first piston 72 to inject liquid A into the chamber A5, and the liquid B in the chamber B6 is squeezed out; when the light-transmitting elastic film 4 is deformed to reach the boundary of the second light-transmitting lens 3, that is, the light-transmitting elastic film 4 is attached to the second light-transmitting lens 3, the fluid opening 13 is connected to the outside, and the output end of the drive device is reversed to push the first piston 72 to extract the liquid A in the chamber A5, and at the same time, air enters the chamber B6. The liquid control device 7 has a simpler structure, can reduce costs, and thus can reduce the cost of the dual-mode liquid lens. At the same time, the liquid control device 7 has a more compact structure, can reduce the volume of the dual-mode liquid lens, and is more convenient for the installation of the dual-mode liquid lens.

[0148] In one embodiment, the driving device comprises:

[0149] A first rack, the first rack is movably arranged along the moving direction of the first piston, and the first rack is connected to the first piston;

[0150] Drivers; and

[0151] The driving gear is connected to the output end of the driver, and the driving gear can rotate with the output end of the driver, and the driving gear is meshed with the first rack. The driving device has a simple and practical structure and high transmission stability.

[0152] The driver may be a motor, or a piezoelectric ceramic drive, an electromagnetic drive, or the like.

[0153] In a third aspect, the present invention provides a lens adjustment method, which uses the above-mentioned dual-mode liquid lens, including the following modes:

[0154] Initial state: chamber A5 is empty of liquid A, and chamber B6 is filled with fluid C;

[0155] Single liquid mode: inject liquid A into chamber A5, use liquid A to push the light-transmitting elastic membrane 4, so that the light-transmitting elastic membrane 4 is deformed toward the second light-transmitting lens 3; or, discharge liquid A from chamber A5, so that the light-transmitting elastic membrane 4 is deformed toward the first light-transmitting lens 2 and reset to the above initial state, that is, chamber A5 is free of liquid A and chamber B6 is filled with fluid;

[0156] Dual liquid mode: inject liquid B into chamber B6, and at the same time, discharge liquid A from chamber A5, so that the light-transmitting elastic membrane 4 is deformed toward the first light-transmitting lens 2; or, inject liquid A into chamber A5, and at the same time, discharge liquid B from chamber B6, so that the light-transmitting elastic membrane 4 is deformed toward the second light-transmitting lens 3.

[0157] The lens adjustment method of the present invention has a single-liquid mode and a double-liquid mode, and can switch between the single-liquid mode and the double-liquid mode. The single-liquid mode and the double-liquid mode respectively control a zoom range, thereby improving the control accuracy. Compared with the existing double-liquid zoom lens, the double-mode liquid lens has a single-liquid mode added under almost the same structural size, thereby significantly expanding the zoom range. Alternatively, under the same zoom range requirement, the double-mode liquid lens can reduce the structural size.

[0158] In one embodiment, the lens adjustment method includes the following switching method:

[0159] In the single liquid mode, liquid A is injected into chamber A. After liquid B is completely discharged from chamber B, the mode is switched to discharge liquid A and allow fluid C to enter chamber B.

[0160] In the dual-liquid mode, liquid A is injected into chamber A. After fluid C is completely discharged from chamber B, the mode is switched to discharge liquid A and allow liquid B to enter chamber B.

[0161] The present invention provides a lens adjustment method. In terms of specific implementation, reference may also be made to the structural design of a dual-mode liquid lens and a lens adjustment system.

[0162] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0163] In the description of this specification, the terms left and right are only for convenience of distinction. Their essence refers to two opposite directions. The left and right can be understood with reference to the left and right in the drawings. They do not necessarily refer to the left and right in any reference system. The left and right can be swapped according to actual use.

[0164] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0165] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A lens adjustment method, characterized in that: The following modes are included: Single liquid mode: inject liquid A into chamber A, use liquid A to push the light-transmitting elastic membrane, so that the light-transmitting elastic membrane is deformed in the direction of chamber B; or, discharge liquid A in chamber A, so that the light-transmitting elastic membrane is deformed in the direction of chamber A; Dual liquid mode: inject liquid B into chamber B and, at the same time, discharge liquid A from chamber A to deform the light-transmitting elastic membrane toward chamber A; or, inject liquid A into chamber A and, at the same time, discharge liquid B from chamber B to deform the light-transmitting elastic membrane toward chamber B.

2. The lens adjustment method according to claim 1, characterized in that: The following switching methods are included: In the single liquid mode, liquid A is injected into chamber A. After liquid B is completely discharged from chamber B, the mode is switched to discharge liquid A and allow fluid C to enter chamber B. In the dual-liquid mode, liquid A is injected into chamber A. After fluid C is completely discharged from chamber B, the mode is switched to discharge liquid A and allow liquid B to enter chamber B.

3. Dual-mode liquid lens, characterized in that: include: case; A first light-transmitting lens, wherein the first light-transmitting lens is disposed on a first end of the housing along a first direction; A second light-transmitting lens, the second light-transmitting lens is disposed on a second end of the housing along the first direction; as well as A light-transmitting elastic film, the light-transmitting elastic film is arranged between the first light-transmitting lens and the second light-transmitting lens; A chamber A is formed between the light-transmitting elastic membrane, the shell and the first light-transmitting lens, and the chamber A is connected to a first liquid opening, and the first liquid opening is used to supply liquid A to enter and exit the chamber A. A chamber B is formed between the light-transmitting elastic membrane, the shell and the second light-transmitting lens, and the chamber B is connected to a second liquid opening and a fluid opening, and the second liquid opening is used to supply liquid B to enter and exit the chamber B, and the fluid opening is used to supply fluid C to enter and exit the chamber B, so that the chamber B is filled with different media or is not filled with media, so that the dual-mode liquid lens can switch between a single-liquid mode and a dual-liquid mode, wherein the liquid A and liquid B have different refractive indices, and the fluid C and liquid B have different refractive indices.

4. The dual-mode liquid lens according to claim 3, characterized in that: The fluid C is gas.

5. The dual-mode liquid lens according to claim 3, characterized in that: The liquid A and the liquid B have the same density.

6. A lens adjustment system, characterized in that: include: The dual-mode liquid lens according to any one of claims 3 to 5; as well as A liquid control device, which is used to change the amount of liquid in the chamber A or the chamber B.

7. The lens adjustment system according to claim 6, characterized in that: The liquid control device comprises: a first liquid delivery pipe, the first liquid delivery pipe being in communication with the first liquid opening; a first piston, the first piston being movably inserted into the first liquid delivery pipe along an axial direction of the first liquid delivery pipe, the first piston being used to inject liquid A from the first liquid delivery pipe into the chamber A or to extract liquid A from the chamber A into the first liquid delivery pipe; a second liquid delivery pipe, the second liquid delivery pipe being in communication with the second liquid opening; a second piston, the second piston being movably inserted into the second liquid delivery pipe along an axial direction of the second liquid delivery pipe, the second piston being used to inject liquid B from the second liquid delivery pipe into the chamber B or to extract liquid B from the chamber B into the second liquid delivery pipe; A driving device is connected to the first piston and the second piston, and is used to drive the first piston and the second piston to move.

8. The lens adjustment system according to claim 7, characterized in that: The driving device comprises: a first rack, the first rack being movably arranged along a moving direction of the first piston, and the first rack being connected to the first piston; a second rack, the second rack being movably arranged along a moving direction of the second piston, the second rack being connected to the second piston; A driver for generating a driving force; A driving gear, the driving gear is connected to the output end of the driver, the driving gear can rotate along with the output end of the driver, and the driving gear is meshed with the first rack; a driven gear meshing with the second rack; an intermediate gear, the intermediate gear being located between the driving gear and the driven gear, the intermediate gear being movably arranged, the intermediate gear having an engaged state in which the intermediate gear is engaged with the driving gear and the driven gear, and a non-engaged state in which the intermediate gear is disengaged from the driving gear and the driven gear, the intermediate gear being movable to switch between the engaged state and the non-engaged state; and A linkage mechanism is connected to the intermediate gear, and the linkage mechanism is used to drive the intermediate gear to move.

9. The lens adjustment system according to claim 8, characterized in that: The intermediate gear is movably arranged along its axial direction; The linkage mechanism comprises: an elastic member, the elastic member being connected to the intermediate gear, and the elastic member being used to provide a restraining force for the intermediate gear to maintain the meshing state or the non-meshing state; a conductor, wherein the conductor is disposed on the intermediate gear; and The electromagnet generates a magnetic force that overcomes the restraining force and attracts or repels the conductor when the electromagnet is powered on, so that the intermediate gear switches from the meshing state or the non-meshing state to another state; when the electromagnet is powered off, the elastic member resets and restores the intermediate gear to its original state.

10. The lens adjustment system according to claim 6, characterized in that: The liquid control device comprises: a first liquid delivery pipe, the first liquid delivery pipe being in communication with the first liquid opening; a first piston, the first piston being movably inserted into the first liquid delivery pipe along an axial direction of the first liquid delivery pipe, the first piston being used to inject liquid A from the first liquid delivery pipe into the chamber A or to extract liquid A from the chamber A into the first liquid delivery pipe; A driving device, the driving device is connected to the first piston, and the driving device is used to drive the first piston to move; a second liquid delivery pipe, the second liquid delivery pipe being in communication with the second liquid opening; A valve body is disposed at the fluid opening and is used to control the opening and closing of the fluid opening.

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