Vibration-resistant and low-temperature-resistant device for liquid lens
By designing a vibration- and cryogenic-resistant device for liquid lenses, and utilizing vibration-resistant pads and cryogenic heating modules, the stability problem of liquid lenses under vibration and low temperature was solved, enabling stable imaging in complex environments.
Patent Information
- Application Number
- CN202511892424.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-03-03
AI Technical Summary
Liquid lenses are easily damaged under severe vibration and extreme low temperature environments. Existing technologies have limited ability to improve vibration and low temperature resistance, which affects imaging performance.
A liquid lens anti-vibration and anti-low temperature device was designed, comprising an annular cavity, a low temperature heating module, elastic connecting elements and a housing. The anti-vibration pad and elastic connecting elements absorb vibration energy, the low temperature heating module maintains temperature stability, and damaged parts can be easily replaced through positioning and fixing components.
It effectively suppresses vibration transmission, maintains the stability of the liquid lens, ensures normal operation in complex environments, and improves vibration resistance and low-temperature resistance.
Smart Images
Figure CN121596490A_ABST
Abstract
Description
I. Technical Field
[0001] This invention relates to a vibration-resistant and cryogenic-resistant device, and more specifically, to a liquid lens vibration-resistant and cryogenic-resistant device. II. Background Technology
[0002] Liquid lenses are a new type of optical lens that uses liquid as the optical medium and achieves adaptive zoom by changing the curvature of the liquid-liquid interface through external actuation. Liquid lenses have the following characteristics: rapid zooming, allowing for quick adjustment of the focal length without mechanical movement; compact size, with a single liquid lens replacing multiple traditional solid lenses; and low cost, due to the small amount of liquid filling and the use of inexpensive materials. These characteristics make liquid lens technology a cutting-edge technology in the field of contemporary imaging.
[0003] However, in practical applications, liquid lenses may encounter severe vibrations and impacts during transportation and use, which can adversely affect the equipment. For example, these factors can disrupt the stability of the liquid interface, damage its shape, cause optical axis misalignment or leakage, and affect imaging performance. Furthermore, in extreme low-temperature environments, the liquid within the lens may solidify, affecting its normal operation or causing damage. Therefore, a vibration- and cryogenic-resistant device is needed to protect liquid lenses. Such devices can expand the application range of liquid lenses in complex operating conditions, such as in vehicle-mounted equipment and outdoor detection instruments—scenarios with high risks of vibration and low temperatures.
[0004] Traditional liquid lenses improve their vibration and cryogenic resistance by developing wide-temperature-range liquid materials and enhancing the density matching between the two liquid phases. However, these methods offer limited improvement, and more importantly, material modifications can negatively impact parameters such as response time and zoom range. Therefore, there is an urgent need to develop an external stabilization and temperature control auxiliary device to enhance the vibration and cryogenic resistance of liquid lenses without affecting their material structure. III. Summary of the Invention
[0005] This invention proposes a liquid lens anti-vibration and anti-cryogenic device, as shown in the attached figure. Figure 1 As shown, the liquid lens anti-vibration and cryogenic device includes an annular cavity, a cryogenic heating module, several elastic connecting elements, and a housing. The annular cavity, located at the center of the housing, is used to mount the liquid lens; the cryogenic heating module is used to raise the temperature around the liquid lens at low temperatures; the elastic connecting elements include springs, connecting blocks, positioning components, and fixing components, used to connect the cryogenic heating module and the housing, wherein the positioning components include inserts, sleeves, and connecting plates, and the fixing components include external threaded cylinders and internal threaded cylinders; the housing includes an outer shell, a thermal insulation component, and a protective component, used to support and encapsulate the overall structure, wherein the thermal insulation component includes thermal insulation boards and thermal insulation cotton, and the protective component includes anti-vibration pads.
[0006] The structure of the elastic connecting element in this invention is shown in the attached figure. Figure 2 As shown, connecting blocks are fixedly connected to both ends of the spring, and the end of the connecting block away from the spring is threaded. A positioning assembly is located at the end of the connecting block away from the spring. A rod in the positioning assembly is fixedly connected to the connecting block, and a sleeve is fitted onto the outside of the rod. A connecting plate is fixedly connected to the end of the sleeve away from the connecting block, and the connecting plate is fixedly connected to the housing. A fixing assembly is located on the outside of the sleeve. An internally threaded cylinder in the fixing assembly is fixedly connected to the connecting plate. The external thread of the externally threaded cylinder engages with the thread of the connecting block, and the internal thread of the externally threaded cylinder engages with the external thread of the internally threaded cylinder.
[0007] The structure of the positioning component and the fixing component is as follows: Figure 3 As shown. This liquid lens anti-vibration and cryogenic device, through the cooperation of positioning and fixing components, allows for the quick removal and replacement of damaged springs, effectively improving replacement efficiency and convenience, so as to maintain the anti-vibration effect.
[0008] The shell structure in this invention is as shown in the attached figure. Figure 4 As shown, the outer shell is equipped with an insulation component and a protective component. The insulation component includes insulation cotton fixedly connected to the outer shell, and an insulation board is fixedly connected to the side of the insulation cotton away from the outer shell. The protective component includes an anti-vibration pad installed on the outer shell. This liquid lens anti-vibration and anti-low temperature device can effectively improve the low temperature resistance and vibration resistance through the cooperation of the insulation component and the protective component.
[0009] When the liquid lens is subjected to vibration, the anti-vibration pads and elastic connecting elements in the device can effectively attenuate and dissipate vibration energy through their own deformation, thereby suppressing vibration transmission and improving the anti-vibration performance of the liquid lens. When a spring is damaged, it can be quickly removed and replaced through the cooperation of the positioning and fixing components, effectively improving replacement efficiency and convenience to maintain the anti-vibration effect. When the ambient temperature is below 0℃, the insulation board and insulation cotton can maintain the temperature around the liquid lens to a certain extent, while the low-temperature heating module is activated to actively raise the temperature around the liquid lens, ensuring the normal operation of the liquid lens.
[0010] Preferably, the external threaded cylinder can be used to fix the connecting block and the connecting plate by engaging with the internal thread of the connecting block and with the external thread of the internal threaded cylinder.
[0011] Preferably, the insert rod is shaped like a plum blossom, and the inner side of the sleeve has a plum blossom-shaped slot that matches the shape of the insert rod, so that they can be interlocked.
[0012] Preferably, the spring material is a rubber spring, a composite material spring, or a titanium alloy spring.
[0013] Preferably, the insulation board in the insulation component is made of aerogel felt or rubber and plastic material, the insulation cotton is made of rock wool, glass wool or silicate rock wool, and the vibration damping pad in the protection component is made of high-damping nitrile rubber or polyurethane elastomer. IV. Description of the attached drawings
[0014] Appendix Figure 1 This is a cross-sectional view of a liquid lens anti-vibration and anti-cryogenic device proposed in this invention.
[0015] Appendix Figure 2 This is a schematic diagram of the elastic connecting element of a liquid lens anti-vibration and anti-low temperature device proposed in this invention.
[0016] Appendix Figure 3 This is a schematic diagram of the positioning and fixing components of a liquid lens anti-vibration and anti-low temperature device proposed in this invention.
[0017] Appendix Figure 4 This is a schematic diagram of the housing structure of a liquid lens anti-vibration and anti-low temperature device proposed in this invention.
[0018] The figure labels in the above figures are as follows:
[0019] 1. Annular cavity, 2. Low temperature heating module, 3. Elastic connecting element, 31. Spring, 32. Connecting block, 33. Positioning component, 331. Insert rod, 332. Sleeve, 333. Connecting plate, 34. Fixing component, 341. External threaded cylinder, 342. Internal threaded cylinder, 4. Shell, 41. Outer shell, 42. Thermal insulation component, 421. Thermal insulation cotton, 422. Thermal insulation board, 43. Protective component.
[0020] It should be understood that the above figures are only schematic and are not drawn to scale. V. Detailed Implementation Methods
[0021] The following detailed description of embodiments of the liquid lens anti-vibration and anti-cryogenic device proposed in this invention further illustrates the invention. It is necessary to point out that the following embodiments are only for further illustrative purposes and should not be construed as limiting the scope of protection of this invention. Any non-essential improvements and adjustments made to this invention by those skilled in the art based on the above description still fall within the scope of protection of this invention.
[0022] This embodiment discloses a liquid lens vibration-damping and cryogenic device, the structure of which includes an annular cavity, a cryogenic heating module, several elastic connecting elements, and a housing. The annular cavity is made of POM, with a radius of 8mm and a height of 8mm. The cryogenic heating module consists of a temperature sensor, a flexible circuit board, and a heater, capable of automatically sensing the ambient temperature and activating the heater. The elastic connecting elements include a spring, a connecting block, a fixing component, and a positioning component. The spring is made of titanium alloy, with a length of 10mm and a diameter of 5mm. The connecting block is made of POM, with a diameter of 4.9mm at the end near the spring and 7mm at the end away from the spring, and the thread is an M6.5 internal thread. The positioning component includes a rod, a connecting plate, and a sleeve. The rod is made of POM, has a quincunx shape, and a height of 3.12mm. The sleeve is also made of POM. The groove is shaped like a plum blossom, with a height of 3mm and an outer diameter of 4.25mm. The connecting plate is made of POM and has a diameter of 7mm. The fixing components include an external threaded cylinder and an internal threaded cylinder, both made of POM. The external threaded cylinder has a height of 2.75mm, with an external thread of M6.5 and an internal thread of M6. The internal threaded cylinder has a height of 3.12mm and an external thread of M6. The shell includes an outer shell, an insulation component, and a protective component. The outer shell is made of POM, with a height of 36mm and a diameter of 60mm. The insulation component includes insulation cotton and an insulation board. The insulation cotton is made of silicate rock wool, and the insulation board is made of aerogel felt. The protective component is made of high-damping nitrile rubber.
[0023] This device integrates multiple vibration-damping and active temperature control systems to ensure the stable operation of the liquid lens in complex environments. The vibration-damping pads and elastic connecting elements absorb and dissipate vibration energy through their own deformation, effectively suppressing the transmission of vibration to the liquid lens. When the ambient temperature is below 0°C, the built-in low-temperature heating module will automatically start, combined with the passive heat insulation effect of the insulation board and insulation cotton, to maintain the working temperature around the lens and ensure its reliable performance.
[0024] When replacing a damaged spring, screw on the external threaded cylinder. Use the threads of the external threaded cylinder to engage with the connecting block and the internal threaded cylinder to disengage the connecting block from the connecting plate. Then pull the connecting block to separate the insert rod from the sleeve. After that, insert the replaced spring and connecting block into the sleeve, and then screw on the external threaded cylinder to connect and fix the connecting block and the connecting plate through the threads of the internal threaded cylinder and the connecting block, thus completing the replacement of the elastic connecting element.
[0025] The vibration test results are as follows: The device was placed on a vibration table for testing. The vibration table parameters were set as follows: frequency 120Hz, acceleration 10g, and amplitude 5mm. When vibration was applied to the vibration table, due to the protective function of the device, the liquid lens inside the device remained basically stable with minimal swaying even when the vibration table vibrated violently.
[0026] The temperature test results are as follows: The device was placed in a high and low temperature chamber, with the chamber temperature set to -40℃. The temperature sensor detected a temperature below 0℃ and transmitted the signal to the control circuit board. The control circuit board then activated the heater. After 5 minutes, the temperature around the liquid lens rose above 0℃, and the liquid lens began to function normally.
Claims
1. A liquid lens anti-vibration and anti-cryogenic device, characterized in that: The liquid lens anti-vibration and cryogenic resistance device includes an annular cavity, a cryogenic heating module, several elastic connecting elements, and a housing. The annular cavity, located at the center of the housing, is used to install the liquid lens. The cryogenic heating module is used to raise the temperature around the liquid lens at low temperatures. The elastic connecting elements include springs, connecting blocks, positioning components, and fixing components, used to connect the cryogenic heating module and the housing. The positioning components include inserts, sleeves, and connecting plates, and the fixing components include external threaded cylinders and internal threaded cylinders. The housing includes an outer shell, a thermal insulation component, and a protective component, used to support and encapsulate the overall structure. The thermal insulation component includes thermal insulation boards and thermal insulation cotton, and the protective component includes anti-vibration pads. In the elastic connection element structure of the present invention, connecting blocks are fixedly connected to both ends of the spring, and the end of the connecting block away from the spring is provided with a thread; the positioning component is located at the end of the connecting block away from the spring, the insert rod in the positioning component is fixedly connected to the connecting block, the outside of the insert rod is sleeved with a sleeve, the end of the sleeve away from the connecting block is fixedly connected to a connecting plate, and the connecting plate is fixedly connected to the housing; a fixing component is provided on the outside of the sleeve, the internal threaded cylinder in the fixing component is fixedly connected to the connecting plate, the external thread of the external threaded cylinder engages with the thread of the connecting block, and the internal thread of the external threaded cylinder engages with the external thread of the internal threaded cylinder. In the shell structure of this invention, a heat insulation component and a protective component are provided on the outer side of the shell; the heat insulation component includes heat insulation cotton fixedly connected to the shell, and a heat insulation board is fixedly connected to the side of the heat insulation cotton away from the shell; the protective component includes an anti-vibration pad provided on the outer side of the shell; this liquid lens anti-vibration and anti-low temperature device can effectively improve the low temperature resistance and anti-vibration effect by cooperating with the heat insulation component and the protective component. When the liquid lens is subjected to vibration, the anti-vibration pads and elastic connecting elements in the device can effectively attenuate and dissipate vibration energy through their own deformation, thereby suppressing vibration transmission and improving the anti-vibration performance of the liquid lens. When the spring is damaged, the damaged spring can be quickly removed and replaced through the cooperation of the positioning and fixing components, effectively improving the replacement efficiency and convenience, so as to maintain the anti-vibration effect. When the ambient temperature is below 0℃, the insulation board and insulation cotton can maintain the temperature around the liquid lens to a certain extent. At the same time, the low-temperature heating module is activated to actively raise the temperature around the liquid lens, ensuring the normal operation of the liquid lens.
2. The liquid lens anti-vibration and anti-cryogenic device according to claim 1, characterized in that: The external threaded cylinder can be used to fix the connecting block and the connecting plate by engaging with the internal thread of the connecting block and with the external thread of the internal threaded cylinder.
3. The liquid lens anti-vibration and anti-cryogenic device according to claim 1, characterized in that: The insert rod is shaped like a plum blossom, and the inner side of the sleeve has plum blossom-shaped slots that match the shape of the insert rod, so that they can be interlocked.
4. The liquid lens anti-vibration and anti-cryogenic device according to claim 1, characterized in that: The spring material is a rubber spring, a composite material spring, or a titanium alloy spring.
5. The liquid lens anti-vibration and anti-cryogenic device according to claim 1, characterized in that: The insulation board in the thermal insulation component is made of aerogel felt or rubber and plastic material, the insulation cotton is made of rock wool, glass wool or silicate rock wool, and the vibration damping pad in the protective component is made of high damping nitrile rubber or polyurethane elastomer.