Quick focusing liquid lens camera and adjusting method
By collecting leaked liquid with a ring cover and using the reaction of aluminum carbonate powder to generate gas to drive a piston to separate the plug, the problem of camera damage caused by liquid lens seal failure is solved, achieving rapid emergency protection and ensuring image quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-26
- Publication Date
- 2026-04-07
AI Technical Summary
The failure of the liquid lens seal can cause conductive liquid to leak out, resulting in short circuits or corrosion of the electronic components inside the camera, affecting image quality and increasing maintenance costs.
A ring-shaped hood is used to collect the leaked liquid. The aluminum carbonate powder reacts to generate gas, which pushes the piston to separate the plug. Combined with mechanical power-off protection, this prevents the liquid from spreading and restores the initial interface state.
It effectively prevents conductive liquids from contacting circuit board components, reduces the risk of equipment damage, enables rapid emergency protection, and ensures imaging quality and equipment safety.
Smart Images
Figure CN121815048A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of camera technology, specifically to a fast-focusing liquid lens camera and its adjustment method. Background Technology
[0002] Electrowetting liquid lenses, a commonly used type of liquid lens in the camera field, have become a key component for improving camera focusing performance due to their core advantages of rapid response, wide focusing range, and low power consumption. Their core structure consists of two layers of transparent electrodes, a hydrophobic insulating layer, a conductive liquid, and an insulating liquid. These components work together to achieve dynamic focal length adjustment: the transparent electrodes act as voltage application carriers, the hydrophobic insulating layer ensures stable separation of the liquid interface, and the conductive and insulating liquids are immiscible and have different refractive indices. The light propagation path is controlled by changes in the interface curvature. In use, applying voltage to the electrodes changes the surface energy of the conductive liquid, altering its contact angle with the hydrophobic insulating layer. This drives the interface between the two liquids to form different curvatures, enabling rapid focal length switching, perfectly meeting the dynamic focusing needs of cameras.
[0003] The sealing performance of a liquid lens directly determines its operational stability. If the sealing structure fails, leakage can severely damage the camera. Because liquid lenses contain conductive liquid (such as salt water), leakage will occur through gaps in the components after the seal fails. This leaked conductive liquid is fluid and will spread freely inside the camera. The camera's circuit board contains numerous precision electronic components, including chips, capacitors, and resistors, all of which are extremely sensitive to conductive media. Contact with the circuit board can cause short circuits, leading to component burnout or malfunction. This, in turn, can cause focusing problems, decreased image quality, and even render the entire camera module unusable. Furthermore, the spread of the conductive liquid can corrode the metal traces and solder joints of the circuit board, exacerbating damage and increasing both user experience and repair costs. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a fast-focusing liquid lens camera and adjustment method to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides a fast-focusing liquid lens camera, comprising a circuit board. A camera module is mounted on one side of the circuit board, and a liquid lens is mounted on the lens portion of the camera module. A female connector for use with a male plug is mounted on the side of the circuit board opposite to the camera module. An annular cover is fitted over the liquid lens to collect conductive liquid leaking from the liquid lens due to sealing failure. A straight cylinder containing aluminum carbonate powder is located on one side of the liquid lens, connected to the annular cover and the circuit board. A sealing cap is threaded to the end of the straight cylinder away from the circuit board. A pushing component for separating the female connector from the male plug is slidably installed inside the straight cylinder. Through the core structural combination of the annular cover, the straight cylinder, and the pushing component, the problem of liquid lens leakage damaging equipment is solved at its source. The annular cover, fitted over the liquid lens, can quickly collect conductive liquid leaking due to seal failure, preventing the liquid from spreading freely inside the camera and preventing short circuits or corrosion of precision electronic components on the circuit board due to contact with the conductive liquid. The straight cylinder is connected to the annular cover and stores aluminum carbonate powder, providing a material basis for emergency protection after leakage. The pusher can automatically separate the female and male plugs in the event of leakage, forming a complete chain of collection, triggering, and protection in conjunction with subsequent power-off protection, reducing the risk of equipment scrapping, while not affecting the normal installation and use of the camera.
[0006] Specifically, the pushing component includes a piston, which is slidably mounted inside the straight cylinder. Aluminum carbonate powder is disposed between the sealing cap and the piston. A connecting rod is mounted on the side of the piston facing away from the sealing cap. The connecting rod passes through the circuit board and is connected to a locking part that engages with the male plug. A notch is provided on one side of the female plug, and the locking part is inserted into the notch. A compression spring, in a compressed state, is fitted on the connecting rod and is disposed between the piston and the circuit board. Through the coordinated design of the piston, connecting rod, locking part, and compression spring, rapid protective action is ensured in case of leakage. The gas generated by the reaction of aluminum carbonate with the leaking liquid smoothly pushes the piston, which, through the connecting rod, causes the locking part to disengage from the female plug, quickly cutting off the connection between the male and female plugs and achieving mechanical power-off preparation. The compression spring is always in a compressed state, which not only helps the piston maintain a stable position when there is no leakage but also enhances the smoothness of piston movement when propelled by gas, preventing jamming. The locking part, inserted into the notch of the female plug, ensures the stability of the male and female plug connection, separating only when a leak is triggered, thus meeting the dual needs of normal use and emergency protection.
[0007] Specifically, the area of the circuit board covered by the straight cylinder has a rectangular hole, and the connecting rod has a rectangular cross-section, passing through the rectangular hole. By engaging the rectangular hole on the circuit board with the rectangular cross-section of the connecting rod, the rotational freedom of the connecting rod is effectively restricted, ensuring that the connecting rod always moves in a straight line when the piston moves. This prevents misalignment between the locking part and the notch of the female connector due to the rotation of the connecting rod, ensuring accurate triggering of the separation mechanism in case of leakage.
[0008] Specifically, the circuit board has fixing holes at each of its four corners, and first screws for positioning the circuit board are inserted into these holes. A connecting plate is located on one side of the circuit board, and first end rings are installed at both ends of the connecting plate. These first end rings are aligned with the fixing holes and are fitted onto the first screws. A second end ring, connected and fixed to the straight cylinder, is fitted onto the end of the straight cylinder closest to the circuit board and is also connected and fixed to the connecting plate. This combination of the first screws, connecting plate, first end rings, and second end rings achieves a stable connection between the circuit board and the straight cylinder. The fixing holes at the four corners of the circuit board, in conjunction with the first screws, ensure the circuit board is installed flat. The connecting plate is fitted onto the first screws via the first end rings, and the straight cylinder is connected to the connecting plate via the second end rings, forming a stable integrated structure between the straight cylinder and the circuit board.
[0009] Specifically, a camera mount is installed in the center of one side of the circuit board, and the camera module is connected to the camera mount. Connecting parts are installed on both parallel sides of the camera mount. Two support arms are installed on one side of the annular cover, and a third end ring is installed at the end of each support arm away from the annular cover. A second screw, threaded to the connecting part, is inserted into the third end ring. Through the cooperation of the support arms, the third end ring, and the second screw, the annular cover is firmly fixed to the connecting part of the camera mount, ensuring a tight fit between the annular cover and the liquid lens without significant gaps, thus improving the sealing and effectiveness of leakage collection. The symmetrical arrangement of the two support arms ensures even force distribution on the annular cover. The detachable screw connection facilitates later disassembly of the annular cover for cleaning, maintenance, or replacement.
[0010] Specifically, a bent pipe is installed at the lower part of the outer surface of the annular cover. The end of the bent pipe away from the annular cover is connected to a straight cylinder, and the bent pipe communicates with the space in the straight cylinder where aluminum carbonate powder is stored. The annular cover is connected to the straight cylinder through the bent pipe, and the guiding effect of the bent pipe allows the leakage collected by the annular cover to flow accurately and smoothly into the straight cylinder to contact the aluminum carbonate powder.
[0011] Specifically, the bent tube has an L-shaped structure, and a water-permeable sponge is glued to the side of the bent tube closest to the straight cylinder. The water-permeable sponge helps to keep the aluminum carbonate powder inside the straight cylinder.
[0012] Specifically, two symmetrically arranged first sealing rings are glued inside the annular cover, and the first sealing rings are fitted onto the liquid lens. A second sealing ring is provided between the straight cylinder and the sealing cap. The first sealing rings inside the annular cover enhance the fit and sealing between the annular cover and the liquid lens, not only preventing the conductive liquid leaking from the liquid lens from spreading outward, but also preventing external dust, moisture, and other impurities from entering the annular cover and contaminating the liquid lens or affecting leakage collection. The second sealing ring between the straight cylinder and the sealing cap seals the internal space of the straight cylinder, preventing the aluminum carbonate powder from getting damp and leaking, or preventing external impurities from entering the straight cylinder and affecting the reliability of the protective reaction.
[0013] A method for adjusting a fast-focusing liquid lens camera, wherein the liquid lens comprises a transparent substrate, a hydrophobic insulating layer, a conductive liquid, and an insulating liquid, and the adjustment method includes the following steps: S01. An initial voltage of 0.5-2V is applied to the electrodes of the liquid lens through the circuit board, so that the conductive liquid and the hydrophobic insulating layer form an initial contact angle and the liquid lens is in the initial focal length state. At the same time, the camera module acquires the initial image and transmits it to the external control system. S02. The external control system receives the focus command or image sharpness detection signal input by the user, analyzes the sharpness and contrast parameters of the current image, and determines the contact angle adjustment range corresponding to the target focal length. S03. During the voltage adjustment process, the camera module acquires images in real time and transmits them to the control system. The control system detects the focusing effect in real time through the image sharpness algorithm. If the image sharpness does not reach the preset threshold, the voltage is finely adjusted. If the sharpness exceeds the threshold and tends to stabilize, the voltage adjustment is stopped and the current voltage value is locked. S04. When conductive liquid leaking from the liquid lens is collected inside the annular cover, the leaking liquid seeps into the straight cylinder through the curved pipe and comes into contact with the aluminum carbonate powder. The aluminum carbonate undergoes double hydrolysis upon contact with the water in the conductive liquid, generating aluminum hydroxide precipitate and carbon dioxide gas. This triggers a reaction, generating gas that pushes the piston to move. The connecting rod then disengages the locking part from the female and male plugs. Simultaneously, the control system automatically cuts off the power supply to the liquid lens, restoring the conductive and insulating liquids to their initial interface state, preventing further damage to the equipment due to the leak. The adjustment method employs a closed-loop process of initial voltage calibration, focal length requirement judgment, real-time feedback fine-tuning, and emergency handling of leaks, achieving dual protection for focusing accuracy and equipment safety. Initial voltage calibration allows the liquid lens to quickly reach its initial focal length, shortening the focusing response time. Real-time image feedback combined with voltage fine-tuning accurately judges the focusing effect through sharpness and contrast parameters, ensuring image quality. In case of leakage, the automatic triggering of the aluminum carbonate reaction and power-off separation quickly terminates the risk without manual intervention, preventing further damage to the equipment due to the leak, thus balancing the camera's performance and safety protection.
[0014] Specifically, the liquid lens is an electrowetting type liquid lens, and the conductive liquid is saline solution. Specifying the liquid lens as electrowetting type and the conductive liquid as saline solution ensures that the adjustment method is compatible with the equipment structure.
[0015] The beneficial effects of this invention are: The annular cover on the outside of the liquid lens can quickly collect conductive liquid leaking due to seal failure. Together with the internal first sealing ring, it further prevents liquid from seeping towards the circuit board. Compared to the problem of liquid leakage flowing freely in traditional cameras, the annular cover confines the leakage to a fixed area, preventing conductive liquid from contacting precision components such as chips and capacitors on the circuit board at the source, preventing short circuits or corrosion damage, and reducing the risk of equipment failure.
[0016] The leaking liquid seeps into the straight cylinder through the L-shaped bend, where it undergoes a double hydrolysis reaction upon contact with the aluminum carbonate powder. The generated carbon dioxide gas pushes the piston, causing the locking part on the connecting rod to disengage from the female and male plugs, thus automatically cutting off the power supply to the liquid lens. This dual design of mechanical separation and power-off protection can quickly terminate the circuit connection and restore the conductive and insulating liquids to their initial interface state, preventing the leakage from expanding and causing more serious equipment damage. Emergency protection can be completed without manual intervention. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a fast-focusing liquid lens camera structure according to the present invention; Figure 2 This is a perspective view of a fast-focusing liquid lens camera according to the present invention; Figure 3 This is a three-dimensional view of another perspective of the fast-focusing liquid lens camera of the present invention; Figure 4 This is a three-dimensional assembly diagram of the straight cylinder and the annular cover in a fast-focusing liquid lens camera according to the present invention; Figure 5 This is a schematic diagram of the planar assembly of the straight cylinder and the annular cover in a fast-focusing liquid lens camera according to the present invention; Figure 6 for Figure 5 Sectional view of AA; Figure 7 This is a schematic diagram of the exploded structure of the straight cylinder and the annular cover in a fast-focusing liquid lens camera according to the present invention; Figure 8 This is a schematic diagram of the assembly of the female connector and the circuit board in a fast-focusing liquid lens camera according to the present invention. In the diagram: 100, circuit board; 101, camera mount; 1011, connecting part; 1012, second screw; 102, fixing hole; 1021, first screw; 103, rectangular hole; 200, camera module; 201, liquid lens; 300, ring cover; 301, support arm; 3011, third end ring; 302, first sealing ring; 400, connecting plate; 401, first end ring; 402, second end ring; 500, straight cylinder; 501, sealing cover; 5011, second sealing ring; 502, bent tube; 503, snap-fit part; 504, connecting rod; 505, aluminum carbonate powder; 506, piston; 507, compression spring; 600, female socket; 601, notch. Detailed Implementation
[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0019] Please see Figures 1-8 The present invention provides a technical solution: a fast-focusing liquid lens camera, including a circuit board 100, a camera mount 101 mounted on the middle of one side of the circuit board 100, and a camera module 200 connected to the camera mount 101, thereby realizing the mounting of the camera module 200 on one side of the circuit board 100. A liquid lens 201 is mounted on the lens of the camera module 200. The liquid lens 201 includes a transparent substrate, a hydrophobic insulating layer, a conductive liquid, and an insulating liquid, wherein the liquid lens 201 is an electrowetting type liquid lens 201, and the conductive liquid is salt water.
[0020] An annular cover 300 is fitted onto the liquid lens 201. The annular cover 300 is used to collect conductive liquid leaking from the liquid lens 201 due to sealing failure. Two symmetrically arranged first sealing rings 302 are glued inside the annular cover 300. The first sealing rings 302 are fitted onto the liquid lens 201 and improve the sealing between the annular cover 300 and the liquid lens 201. Connecting parts 1011 are installed on two parallel sides of the camera mount 101. Two support arms 301 are installed on one side of the annular cover 300. A third end ring 3011 is installed at the end of the support arm 301 away from the annular cover 300. A second screw 1012, which is threaded to the connecting part 1011, is inserted into the third end ring 3011 to limit the position of the annular cover 300.
[0021] A straight cylinder 500 storing aluminum carbonate powder 505 is provided on one side of the liquid lens 201. The straight cylinder 500 is connected to the annular cover 300 and the circuit board 100. Fixing holes 102 are provided at the four corners of the circuit board 100. First screws 1021 for limiting the position of the circuit board 100 are inserted into the fixing holes 102. A connecting plate 400 is provided on one side of the circuit board 100. First end rings 401 are installed at both ends of the connecting plate 400. The first end rings 401 are aligned with the fixing holes 102 and are sleeved on the first screws 1021. A second end ring 402 is sleeved on the end of the straight cylinder 500 near the circuit board 100 and is connected and fixed to the straight cylinder 500. The second end ring 402 is connected and fixed to the connecting plate 400. The structure formed by the first end ring 401, the second end ring 402 and the connecting plate 400 increases the connection range between the straight cylinder 500 and the circuit board 100.
[0022] A bent tube 502 is installed on the lower part of the outer surface of the annular cover 300. The end of the bent tube 502 away from the annular cover 300 is connected to the straight cylinder 500. The bent tube 502 and the space in the straight cylinder 500 where aluminum carbonate powder 505 is stored are connected. The bent tube 502 has an L-shaped structure. A water-permeable sponge is glued to the side of the bent tube 502 near the straight cylinder 500. With the interception of the water-permeable sponge, the aluminum carbonate powder 505 is always kept inside the straight cylinder 500. At the same time, the water-permeable sponge does not affect the leakage of liquid into the straight cylinder 500.
[0023] A female connector 600, which mates with a male connector, is installed on the side of the circuit board 100 facing away from the camera module 200. A sealing cap 501 is threaded to the end of the straight cylinder 500 away from the circuit board 100. A second sealing ring 5011 is provided between the straight cylinder 500 and the sealing cap 501. A piston 506 is slidably installed inside the straight cylinder 500. Aluminum carbonate powder 505 is disposed between the sealing cap 501 and the piston 506. A connecting rod 5 is installed on the side of the piston 506 facing away from the sealing cap 501. 04. The connecting rod 504 has a rectangular cross-section. A rectangular hole 103 is provided in the area of the circuit board 100 covered by the straight cylinder 500. The connecting rod 504 passes through the rectangular hole 103 and is connected to a snap-fit part 503 that engages with the male plug. A notch 601 is provided on one side of the female plug 600. The snap-fit part 503 is inserted into the notch 601. A compression spring 507 in a compressed state is fitted on the connecting rod 504. The compression spring 507 is located between the piston 506 and the circuit board 100. The annular cover 300 surrounding the liquid lens 201 can capture the conductive liquid leaking after the seal fails. The double first sealing ring 302 installed inside it can further enhance the sealing and barrier effect, firmly preventing the liquid from spreading and diffusing towards the circuit board 100. Compared to the drawbacks of unrestrained flow after leakage in traditional cameras, the ring cover 300 confines the leakage to an independent area through directional collection, cutting off the contact path between the conductive liquid and the circuit board 100 at the source. This effectively avoids short circuits and corrosion problems caused by conductive medium erosion of precision electronic components such as chips and capacitors, significantly reducing the risk of direct equipment failure and extending the service life of the camera.
[0024] The leaking liquid collected by the annular cover 300 will smoothly seep into the straight cylinder 500 under the guidance of the L-shaped bend 502, and come into full contact with the pre-stored aluminum carbonate powder 505. After a double hydrolysis reaction, a large amount of carbon dioxide gas is generated. The thrust generated by the gas can drive the piston 506 inside the straight cylinder 500 to move smoothly. The power is transmitted through the connecting rod 504, which drives the locking part 503 to quickly disengage from the notch 601 of the female socket 600, so that the male plug and the female socket 600 are automatically separated, and the power supply circuit of the liquid lens 201 is cut off simultaneously. This dual protection mechanism of mechanical and physical separation and circuit power-off protection can not only quickly terminate the circuit connection, but also make the conductive liquid and insulating liquid return to the initial interface state, curbing the expansion of the leakage range from multiple dimensions and avoiding secondary damage to the equipment. The entire emergency protection process does not require manual intervention, and the response is rapid and the protection is accurate and reliable.
[0025] The adjustment method for a fast-focusing liquid lens camera is as follows: An initial voltage of 0.5-2V is applied to the electrodes of the liquid lens 201 via the circuit board 100, causing the conductive liquid to form an initial contact angle with the hydrophobic insulating layer. The liquid lens 201 is then in its initial focal length state. Simultaneously, the camera module 200 acquires an initial image and transmits it to an external control system. The external control system receives focus commands or image sharpness detection signals from the user, analyzes the sharpness and contrast parameters of the current image, and determines the contact angle adjustment range corresponding to the target focal length. During voltage adjustment, the camera module 200 acquires images in real time and transmits them to the control system. The control system uses an image sharpness algorithm to detect the focusing effect in real time. If the image sharpness does not reach the target, the system will adjust the focus accordingly. The voltage is finely adjusted after setting a preset threshold. If the sharpness exceeds the threshold and tends to stabilize, the voltage adjustment is stopped and the current voltage value is locked. When conductive liquid leaking from the liquid lens 201 is collected in the annular cover 300, the leaked liquid seeps into the straight cylinder 500 through the bend 502 and comes into contact with the aluminum carbonate powder 505. The aluminum carbonate undergoes double hydrolysis after encountering water in the conductive liquid, generating aluminum hydroxide precipitate and carbon dioxide gas. The gas generated by the reaction pushes the piston 506 to move, and the connecting rod 504 drives the locking part 503 to disengage from the locking state between the female plug 600 and the male plug. At the same time, the control system automatically cuts off the power supply voltage of the liquid lens 201, so that the conductive liquid and the insulating liquid return to the initial interface state, avoiding further damage to the equipment caused by the expansion of leakage.
Claims
1. A fast-focusing liquid lens camera, characterized in that: The system includes a circuit board (100), on one side of which a camera module (200) is mounted. A liquid lens (201) is mounted on the lens portion of the camera module (200). On the side of the circuit board (100) facing away from the camera module (200), a female connector (600) that mates with a male connector is mounted. An annular cover (300) is fitted over the liquid lens (201) to collect fluid from the liquid lens (201) due to sealing. The liquid lens (201) has a straight cylinder (500) on one side storing aluminum carbonate powder (505). The straight cylinder (500) is connected to the annular cover (300) and the straight cylinder (500) is connected to the circuit board (100). A sealing cap (501) is threaded to the end of the straight cylinder (500) away from the circuit board (100). A pusher for separating the female plug (600) from the male plug is slidably installed inside the straight cylinder (500).
2. The fast-focusing liquid lens camera according to claim 1, characterized in that: The pusher includes a piston (506), which is slidably installed inside the straight cylinder (500). The aluminum carbonate powder (505) is disposed between the sealing cover (501) and the piston (506). A connecting rod (504) is installed on the side of the piston (506) away from the sealing cover (501). The connecting rod (504) passes through the circuit board (100) and is connected to a snap-fit part (503) that engages with the male plug. A notch (601) is provided on one side of the female plug (600). The snap-fit part (503) is inserted into the notch (601). A compression spring (507) in a compressed state is sleeved on the connecting rod (504). The compression spring (507) is disposed between the piston (506) and the circuit board (100).
3. The fast-focusing liquid lens camera according to claim 2, characterized in that: The circuit board (100) has a rectangular hole (103) in the area covered by the straight cylinder (500), and the connecting rod (504) has a rectangular cross-section and passes through the rectangular hole (103).
4. The fast-focusing liquid lens camera according to claim 1, characterized in that: The circuit board (100) has four corners with fixing holes (102). A first screw (1021) for limiting the position of the circuit board (100) is inserted in the fixing hole (102). A connecting plate (400) is provided on one side of the circuit board (100). A first end ring (401) is installed at both ends of the connecting plate (400). The first end ring (401) is aligned with the fixing hole (102) and is sleeved on the first screw (1021). A second end ring (402) is sleeved on the end of the straight cylinder (500) near the circuit board (100) and is connected and fixed to the straight cylinder (500). The second end ring (402) is connected and fixed to the connecting plate (400).
5. A fast-focusing liquid lens camera according to claim 1, characterized in that: A camera mount (101) is installed in the middle of one side of the circuit board (100). The camera module (200) is connected to the camera mount (101). A connecting part (1011) is installed on each of the two parallel sides of the camera mount (101). Two support arms (301) are installed on one side of the annular cover (300). A third end ring (3011) is installed at the end of the support arm (301) away from the annular cover (300). A second screw (1012) that is threadedly connected to the connecting part (1011) is inserted into the third end ring (3011).
6. A fast-focusing liquid lens camera according to claim 1, characterized in that: A bent tube (502) is installed at the lower part of the outer surface of the annular cover (300). The end of the bent tube (502) away from the annular cover (300) is connected to the straight cylinder (500). The bent tube (502) and the space in the straight cylinder (500) where aluminum carbonate powder (505) is stored are connected.
7. A fast-focusing liquid lens camera according to claim 6, characterized in that: The bend (502) has an L-shaped structure, and a water-permeable sponge is glued to the side of the bend (502) near the straight cylinder (500).
8. A fast-focusing liquid lens camera according to claim 6, characterized in that: The annular cover (300) has two symmetrically arranged first sealing rings (302) glued inside. The first sealing rings (302) are fitted on the liquid lens (201). A second sealing ring (5011) is provided between the straight cylinder (500) and the sealing cover (501).
9. The adjustment method for a fast-focusing liquid lens camera according to any one of claims 1-8, characterized in that: The liquid lens (201) comprises a transparent substrate, a hydrophobic insulating layer, a conductive liquid, and an insulating liquid. The adjustment method includes the following steps: S01. An initial voltage of 0.5-2V is applied to the electrodes of the liquid lens (201) through the circuit board (100), so that the conductive liquid and the hydrophobic insulating layer form an initial contact angle and the liquid lens (201) is in the initial focal length state. At the same time, the initial image is acquired through the camera module (200) and transmitted to the external control system. S02. The external control system receives the focus command or image sharpness detection signal input by the user, analyzes the sharpness and contrast parameters of the current image, and determines the contact angle adjustment range corresponding to the target focal length. S03. During the voltage adjustment process, the camera module (200) acquires images in real time and transmits them to the control system. The control system detects the focusing effect in real time through the image sharpness algorithm. If the image sharpness does not reach the preset threshold, the voltage is finely adjusted. If the sharpness exceeds the threshold and tends to stabilize, the voltage adjustment is stopped and the current voltage value is locked. S04. When conductive liquid leaking from the liquid lens (201) is collected in the annular cover (300), the leaked liquid seeps into the straight cylinder (500) through the bend (502) and comes into contact with the aluminum carbonate powder (505). The aluminum carbonate undergoes double hydrolysis after encountering water in the conductive liquid, generating aluminum hydroxide precipitate and carbon dioxide gas. The gas generated by the trigger reaction pushes the piston (506) to move, and the connecting rod (504) drives the snap-fit part (503) to disengage from the snap-fit state between the female plug (600) and the male plug. At the same time, the control system automatically cuts off the power supply voltage of the liquid lens (201), so that the conductive liquid and the insulating liquid return to the initial interface state, avoiding further damage to the equipment caused by the expansion of leakage.
10. The adjustment method for a fast-focusing liquid lens camera according to claim 9, characterized in that: The liquid lens (201) is an electrowetting type liquid lens (201), and the conductive liquid is salt water.