Insulating liquid, high-reliability liquid lens and application thereof

Abstract

The application provides an insulating liquid, a high-reliability liquid lens and an application thereof. The insulating liquid comprises an aromatic compound, the aromatic compound has any one of structures as shown in formula I, formula II, formula III or formula IV or a combination of at least two of the structures, in the formula I, formula II, formula III and formula IV, R1, R2, R3, R4 and R5 are each independently alkyl with 1-20 carbon atoms or aryl with 6-10 carbon atoms, and X is silicon or germanium. The insulating liquid provided in the application has a high refractive index and good photochemical stability, and the high-reliability liquid lens containing the insulating liquid can keep the zoom range, hysteresis time and response time and other performances relatively stable under a high-intensity exposure environment for a long time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lens manufacturing, and particularly relates to an insulating liquid, a high-reliability liquid lens and application thereof. BACKGROUND

[0002] The liquid lens has the characteristics of automatic focusing and rapid continuous zooming. The liquid lens based on the principle of electrowetting generally comprises two mutually insoluble isodense liquids, namely a conductive liquid and an insulating liquid. The two-phase liquid is kept in contact and forms a meniscus interface. The shape of the liquid is controlled by applying a voltage to cause the meniscus to change, thereby realizing variable focal length. The variable focal length range is based on the refractive index difference between the conductive liquid and the insulating liquid. The greater the refractive index difference, the greater the variable focal length range. The refractive index range of the conductive liquid is greater than or equal to 1.33. Therefore, an insulating liquid with a high refractive index is usually selected to realize a wide range of variable focal length of the liquid lens.

[0003] In certain specific application scenarios, the liquid lens needs to be in a high-intensity exposure environment for a long time. However, the existing liquid lens has poor temperature resistance and light resistance effect and cannot remain stable in a high-temperature (greater than or equal to 90 DEG C) and high-intensity exposure environment for a long time (greater than or equal to 90 days), resulting in failure. The main reason is that the conventional insulating liquid with a high refractive index has photochemical reactivity. Under the driving action of photon energy in a high-intensity long-term exposure environment, the photochemical free radical polymerization reaction of the insulating liquid with a high refractive index occurs, the structure changes, the liquid-liquid / solid-liquid interfacial tension changes, and thus the liquid lens fails after experiencing the long-term exposure environment, showing defocusing and zooming.

[0004] Therefore, it is necessary to develop an insulating liquid with good light resistance effect to meet the demand for preparing a high-reliability liquid lens. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide an insulating liquid, a high-reliability liquid lens and application thereof. The insulating liquid has a high refractive index and good photochemical stability. The high-reliability liquid lens containing the insulating liquid can keep the performance such as variable focal length range, hysteresis and response time relatively stable in a high-intensity exposure environment for a long time.

[0006] To achieve the purpose of the present application, the following technical solutions are adopted:

[0007] In a first aspect, the present application provides an insulating liquid, which comprises an aromatic compound. The aromatic compound has any one of the structures shown below or a combination of at least two of the structures.

[0008]

[0009] wherein R1, R2, R3, R4, and R5 are each independently an alkyl group having a carbon atom number of 1 to 20 (e.g., 2, 4, 6, 8, 10, 12, 14, 16, or 18, etc.) or an aryl group having a carbon atom number of 6 to 10 (e.g., 7, 8, or 9, etc.), and X is silicon or germanium.

[0010] In the present application, the aromatic compound having the structure shown in Formula I and / or Formula II is added to the insulating liquid, the aromatic compound has the characteristics of high refractive index and good photochemical stability, and the high-reliability liquid lens containing the insulating liquid has relatively stable zoom range, hysteresis, and response time, and good reliability under long-time (≥90 days), high-temperature (≥90°C), and high-intensity exposure (light intensity of 765 W / m 2 ) environments.

[0011] Preferably, R1, R2, R3, R4, and R5 are each independently any one of a methyl group, an ethyl group, an isopropyl group, a n-propyl group, an isopropyl group, a n-butyl group, an isobutyl group, or a phenyl group.

[0012] Preferably, the aromatic compound includes any one of or a combination of at least two of 1-ethylnaphthalene, 2-ethylnaphthalene, 1-isopropyl naphthalene, 2-isopropyl naphthalene, 1-n-butyl naphthalene, 2-n-butyl naphthalene, 1-phenyl naphthalene, 1-naphthyl-1,1,3,3,3-pentamethyldisiloxane, 1-naphthyl-1,1-diethyl-3,3,3-trimethyldisiloxane, 1-naphthyl-1,1,3,3,3-pentamethyldigermae, 1-naphthyl-1,1-diethyl-3,3,3-trimethyldigermae, 1,1,3,3-tetramethyl-1,3-diphenyldisiloxane, 1,3-diethyl-1,3-dimethyl-1,3-diphenyldisiloxane, or 1,3-dimethyl-1,1,3,3-tetraphenyl disiloxane.

[0013] Preferably, the insulating liquid further includes an aliphatic compound.

[0014] Preferably, the aliphatic compound includes any one of or a combination of at least two of an alkane compound, a halogenated hydrocarbon compound, an aliphatic silane compound, or an aliphatic germane compound.

[0015] Preferably, the alkane compound includes an alkane compound having a carbon atom number of 1 to 20 (e.g., 2, 4, 6, 8, 10, 12, 14, 16, or 18, etc.).

[0016] Preferably, the alkane compound includes Isopar L and / or n-hexadecane.

[0017] Preferably, the halogenated hydrocarbon compound includes a halogenated hydrocarbon compound having a carbon atom number of 1 to 20 (e.g., 2, 4, 6, 8, 10, 12, 14, 16, or 18, etc.).

[0018] Preferably, the halogenated hydrocarbon compound comprises perfluorooctane.

[0019] Preferably, the aliphatic silane compound has a structure according to Formula 1 and / or Formula 2.

[0020]

[0021] In Formula 1 and Formula 2, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 each independently is an alkyl group having a carbon number of 1 to 20 (e.g., 2, 4, 6, 8, 10, 12, 14, 16, or 18, etc.).

[0022] Preferably, the aliphatic silane compound comprises hexamethyldisilane and / or hexaethyldisiloxane.

[0023] Preferably, the aliphatic germane compound has a structure according to Formula 3 and / or Formula 4.

[0024]

[0025] In Formula 3 and Formula 4, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 each independently is an alkyl group having a carbon number of 1 to 20 (e.g., 2, 4, 6, 8, 10, 12, 14, 16, or 18, etc.).

[0026] Preferably, the aliphatic germane compound comprises any one or a combination of at least two of hexamethyldigermane, hexaethyldigermane, tetraethyl germane, or tetra-n-butyl germane.

[0027] Preferably, the aromatic compound has a refractive index ≥ 1.5100n D 20 , e.g., 1.5300n D 20 , 1.5500n D 20 , 1.5700n D 20 , 1.5900n D 20 , 1.6100n D 20 , 1.6300n D 20 , 1.6500nD 20 1.6700n D 20 1.6900n D 20 etc.

[0028] Preferably, the density of the aromatic compound is 0.900-1.300 g / cm 3 , for example 0.950 g / cm 3 , 1.000 g / cm 3 , 1.050 g / cm 3 , 1.100 g / cm 3 , 1.150 g / cm 3 , 1.200 g / cm 3 , or 1.250 g / cm 3 , etc.

[0029] Preferably, the number average molecular weight of the aromatic compound is ≤ 800, for example 100, 200, 300, 400, 500, 600, or 700, etc.

[0030] Preferably, the boiling point of the aromatic compound is ≥ 150 °C, for example 152 °C, 154 °C, 156 °C, 158 °C, 160 °C, 162 °C, 164 °C, 166 °C, 168 °C, or 170 °C, etc.

[0031] Preferably, the refractive index of the insulating liquid is ≥ 1.4900n D 20 , for example 1.5000n D 20 , 1.5100n D 20 , 1.5200n D 20 , 1.5300n D 20 , 1.5400n D 20 , 1.5500n D 20 , or 1.5600n D 20 , etc.

[0032] In a second aspect, the present application provides a high-reliability liquid lens, comprising a conductive liquid and an insulating liquid as described in the first aspect.

[0033] Preferably, the density difference between the conductive liquid and the insulating liquid as described in the first aspect is < 0.01 g / cm 3 , for example 0.001 g / cm3 0.002 g / cm 3 0.003 g / cm 3 0.004 g / cm 3 0.005 g / cm 3 0.006 g / cm 3 0.007 g / cm 3 0.008 g / cm 3 or 0.009 g / cm 3 etc.

[0034] Preferably, the electrically conductive liquid comprises a solvent and an additive.

[0035] Preferably, the electrically conductive liquid has a freezing point ≤ -30℃, such as -35℃, -40℃, -45℃, -50℃, -55℃, or -60℃, etc.

[0036] Preferably, the electrically conductive liquid has a boiling point ≥ 120℃, such as 125℃, 130℃, 135℃, 140℃, 145℃, 150℃, 155℃, 160℃, or 165℃, etc.

[0037] Preferably, the solvent comprises any one or a combination of at least two of water, ethylene glycol, or propylene glycol.

[0038] Preferably, the additive comprises an inorganic salt and / or an organic salt.

[0039] Preferably, the volume percentage of the additive in the electrically conductive liquid is 0.1% to 5%, such as 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, or 4.5%, etc.

[0040] Preferably, the inorganic salt comprises sodium chloride and / or sodium bromide.

[0041] Preferably, the organic salt comprises potassium acetate and / or cesium acetate.

[0042] Preferably, the high-reliability liquid lens comprises an upper transparent substrate, a lower transparent substrate, a fluid chamber, an upper electrode, and a lower electrode, the upper transparent substrate is fixed on the upper electrode, the lower transparent substrate is fixed on the lower electrode, the fluid chamber is arranged between the upper transparent substrate and the lower transparent substrate, the fluid chamber is filled with an electrically conductive liquid and an insulating liquid as described in the first aspect, the electrically conductive liquid is close to the upper transparent substrate, and the insulating liquid is close to the lower transparent substrate, a liquid-liquid interface is formed between the two-phase liquid of the electrically conductive liquid and the insulating liquid, an insulating layer or a hydrophobic layer is arranged between the lower electrode and the lower transparent substrate, and a three-phase interface is formed at the junction of the lower electrode and the two-phase liquid.

[0043] It should be noted that the fixing manner of the upper transparent substrate fixed on the upper electrode and the lower transparent substrate fixed on the lower electrode in the present application is not particularly limited, for example, the fixing can be performed by using an adhesive material well known to those skilled in the art.

[0044] Preferably, the insulating layer or the hydrophobic layer comprises any one or a combination of at least two of a parylene linear polymer, a siloxane or an amorphous fluoropolymer.

[0045] Preferably, the parylene linear polymer comprises any one or a combination of at least two of parylene C, parylene D, parylene N, parylene AF-4, parylene HT or parylene VT-4.

[0046] Preferably, the amorphous fluoropolymer comprises perfluorinated amorphous fluororesin Teflon AF 1600 and / or perfluorinated amorphous fluororesin Cytop.

[0047] In a third aspect, the present application provides a use of the high-reliability liquid lens according to the second aspect in a camera, a mobile phone, an endoscope, a code scanner, a telemetry meter or a dental camera.

[0048] Compared with the prior art, the present application has the following beneficial effects:

[0049] In the present application, the aromatic compound having the structure shown in Formula I and / or Formula II is added to the insulating liquid, the aromatic compound has a high refractive index and a good photochemical stability, and the high-reliability liquid lens containing the insulating liquid has a relatively stable zoom range, hysteresis and response time, and good reliability under a long-time (≥ 90 days), high-temperature (≥ 90℃) and high-intensity exposure (765 W / m 2 ) environment, and can widen the application field of the liquid lens technology. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 A structure schematic diagram of the high-reliability liquid lens provided for Example 1 is shown in the figure;

[0051] In the figure, 11 is an upper transparent substrate, 12 is a lower transparent substrate, 30 is an upper electrode, 52 is a lower electrode, 51 is an insulating layer, 10 is an upper transparent substrate adhesive material, 64 is a lower transparent substrate adhesive material, 41 is a conductive liquid, and 42 is an insulating liquid.

[0052] Figure 2 Variation of the diopter of the high-reliability liquid lens prepared for Example 1 after light aging relative to the applied voltage;

[0053] Figure 3Change in diopter of high reliability liquid lens prepared for Example 2 after light aging with respect to applied voltage;

[0054] Figure 4 Change in diopter of high reliability liquid lens prepared for Example 3 after light aging with respect to applied voltage;

[0055] Figure 5 Change in diopter of high reliability liquid lens prepared for Example 4 after light aging with respect to applied voltage;

[0056] Figure 6 Change in diopter of high reliability liquid lens prepared for Example 5 after light aging with respect to applied voltage;

[0057] Figure 7 Change in diopter of liquid lens prepared for Comparative Example 1 after light aging with respect to applied voltage;

[0058] Figure 8 Change in diopter of liquid lens prepared for Comparative Example 1 after light aging with respect to applied voltage. DETAILED DESCRIPTION

[0059] The technical solutions of the present application will be further illustrated by specific embodiments. Those skilled in the art should understand that the embodiments are only to help understand the present application and should not be regarded as specific limitations of the present application.

[0060] The physical property parameters of some components in the following examples and comparative examples are shown in Table 1.

[0061] Table 1

[0062]

[0063] Example 1

[0064] This embodiment provides an insulating liquid and a high reliability liquid lens, the components, contents, physical properties of the insulating liquid and the conductive liquid, the refractive index difference between the insulating liquid and the conductive liquid (refractive index difference Δn = |insulating liquid refractive index-conductive liquid refractive index|), as shown in Table 2 below.

[0065] Table 2

[0066]

[0067] The high reliability liquid lens, such as Figure 1As shown, including the upper transparent substrate 11, the lower transparent substrate 12, the fluid chamber, the upper electrode 30 and the lower electrode 52, the upper transparent substrate 11 is fixed on the upper electrode 30 by the upper transparent substrate adhesive material 10, the lower transparent substrate 12 is fixed on the lower electrode 52 by the lower transparent substrate adhesive material 64, the fluid chamber is arranged between the upper transparent substrate 11 and the lower transparent substrate 12, the fluid chamber is filled with the above-mentioned insulating liquid 42 and the above-mentioned conductive liquid 41, the conductive liquid 41 is close to the upper transparent substrate 11, the insulating liquid 42 is close to the lower transparent substrate 12, a liquid-liquid interface is formed between the two-phase liquid of the conductive liquid 41 and the insulating liquid 42 Figure 1 In the middle of A or B, the shape of the conductive liquid and the insulating liquid changes by applying voltage, the liquid-liquid interface can change between A and B, so as to realize the variable focal length), the insulating layer 51 is arranged between the lower electrode 52 and the lower transparent substrate 12 (the insulating layer material is perfluorinated amorphous fluorine resin Teflon AF 1600, and the lower electrode 52 forms a three-phase interface with the two-phase liquid.

[0068] Example 2

[0069] The embodiment provides an insulating liquid and a high-reliability liquid lens, which is different from the embodiment 1 in that the components, contents, physical properties of the insulating liquid and the conductive liquid, the refractive index difference between the insulating liquid and the conductive liquid (refractive index difference Δn = |insulating liquid refractive index-conductive liquid refractive index|), as shown in Table 3.

[0070] Table 3

[0071]

[0072] In Table 3, " / " represents no added compound.

[0073] Other conditions are the same as those in the embodiment 1.

[0074] Example 3

[0075] The embodiment provides an insulating liquid and a high-reliability liquid lens, which is different from the embodiment 1 in that the components, contents, physical properties of the insulating liquid and the conductive liquid, the refractive index difference between the insulating liquid and the conductive liquid (refractive index difference Δn = |insulating liquid refractive index-conductive liquid refractive index|), as shown in Table 4.

[0076] Table 4

[0077]

[0078] In Table 4, " / " represents no added compound.

[0079] Other conditions are the same as those in the embodiment 1.

[0080] Example 4

[0081] This example provides an insulating liquid and a high-reliability liquid lens, which differs from Example 1 in that the components, contents, physical properties of the insulating liquid and the conductive liquid, and the refractive index difference between the insulating liquid and the conductive liquid (refractive index difference Δn = |insulating liquid refractive index - conductive liquid refractive index|) are as shown in Table 5 below.

[0082] Table 5

[0083]

[0084]

[0085] In Table 5, " / " represents no added compound.

[0086] The other conditions are the same as in Example 1.

[0087] Example 5

[0088] This example provides an insulating liquid and a high-reliability liquid lens, which differs from Example 1 in that the components, contents, physical properties of the insulating liquid and the conductive liquid, and the refractive index difference between the insulating liquid and the conductive liquid (refractive index difference Δn = |insulating liquid refractive index - conductive liquid refractive index|) are as shown in Table 6 below.

[0089] Table 6

[0090]

[0091]

[0092] In Table 6, " / " represents no added compound.

[0093] The other conditions are the same as in Example 1.

[0094] Comparative Example 1

[0095] This comparative example provides an insulating liquid and a liquid lens, which differs from Example 1 only in that 2-ethylnaphthalene in the insulating liquid is replaced with 1-fluoronaphthalene, the components, contents, physical properties of the insulating liquid and the conductive liquid, and the refractive index difference between the insulating liquid and the conductive liquid (refractive index difference Δn = |insulating liquid refractive index - conductive liquid refractive index|) are as shown in Table 7 below.

[0096] Table 7

[0097]

[0098] The other conditions are the same as in Example 1.

[0099] Comparative Example 2

[0100] The comparative example provides an insulating liquid and a liquid lens, which is distinguished from Example 1 only in that 2-ethylnaphthalene in the insulating liquid is replaced by 1-chloronaphthalene, and the components, contents, physical properties of the insulating liquid and the conductive liquid, the refractive index difference between the insulating liquid and the conductive liquid (refractive index difference Δn = |refractive index of the insulating liquid - refractive index of the conductive liquid|) are as shown in Table 8 below.

[0101] Table 8

[0102]

[0103] Other conditions are the same as those in Example 1.

[0104] The hysteresis and response time of the high-reliability liquid lens provided by the above Examples 1-5 and the liquid lens provided by Comparative Examples 1-2 before and after light aging are tested, and the experimental conditions for light aging are as follows: the temperature is 90°C, the light intensity is 765 W / m 2 , the light wavelength is 10-400 nm, and the time is 90 days.

[0105] The results of the test of the hysteresis and response time are shown in Table 9 below.

[0106] Table 9

[0107]

[0108]

[0109] As can be seen from the contents of Table 9, the hysteresis and response time of the high-reliability liquid lens provided by Examples 1-5 before and after light aging have small differences and remain relatively stable, and the light stability is good.

[0110] Compared with Example 1, if 2-ethylnaphthalene in the insulating liquid is replaced by 1-fluoronaphthalene, and the contents of the components in the insulating liquid are adjusted (Comparative Example 1), the densities of the insulating liquid and the conductive liquid remain similar, and the hysteresis of the prepared liquid lens after light aging increases and the response time is significantly prolonged.

[0111] Compared with Example 1, if 2-ethylnaphthalene in the insulating liquid is replaced by 1-chloronaphthalene, and the contents of the components in the insulating liquid are adjusted (Comparative Example 2), the densities of the insulating liquid and the conductive liquid remain similar, and the hysteresis of the prepared liquid lens after light aging increases and the response time is significantly prolonged.

[0112] The change of the diopter relative to the applied voltage of the high-reliability liquid lens provided by the above Examples 1-5 and the liquid lens provided by Comparative Examples 1-2 after light aging is tested, and the results are shown in Table 10 below. Figures 2-8

[0113] Figures 2-6 ​The change of the diopter of the high-reliability liquid lens prepared in Examples 1-5 after light aging with respect to the applied voltage, after light aging, the liquid lens is tested by applying voltage or reducing voltage, the liquid lens can be zoomed normally, and the rising and falling curves of the diopter are completely coincident, the hysteresis and response time are almost unchanged, and the performance is good.

[0114] Figures 7-8 The change of the diopter of the liquid lens prepared in Comparative Examples 1-2 after light aging with respect to the applied voltage, after light aging, the liquid lens is tested by applying voltage or reducing voltage, the liquid lens zooms abnormally, the rising and falling curves of the diopter cannot be completely coincident, and the performance is poor.

[0115] In summary, the high-reliability liquid lens containing the insulating liquid provided by the present application can keep the performance such as zooming range, hysteresis and response time relatively stable under the environment of long-time high-intensity exposure.

[0116] The applicant declares that the process of the present application is illustrated by the above examples, but the present application is not limited to the above process steps, that is, it does not mean that the present application must rely on the above process steps to be implemented. It should be understood by those skilled in the art that any improvement on the present application, equivalent replacement of the materials selected by the present application, addition of auxiliary ingredients, selection of specific methods, etc. fall within the protection scope and disclosure scope of the present application.

Claims

1. A high reliability liquid lens, characterized in that, The high-reliability liquid lens comprises a conductive liquid and an insulating liquid, the insulating liquid comprises an aromatic compound and an aliphatic compound, the aromatic compound has any one or a combination of at least two of structures as shown in the following: Formula II, Formula III, Formula IV; wherein R1, R2, R3, R4 and R5 are each independently an alkyl group with a carbon atom number of 1-20 or an aryl group with a carbon atom number of 6-10, and X is silicon or germanium; The aliphatic compound comprises any one or a combination of at least two of isododecane, an aliphatic silane compound or an aliphatic germane compound. The aliphatic silane compound has structures as shown in the following formula 1 and / or formula 2; Formula 1, Formula 2; In Formula 1 and Formula 2, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 are each independently an alkyl group having a carbon number of 1 to 20. The aliphatic germane compound has structures as shown in the following formula 3 and / or formula 4; Formula 3, Formula 4; In formula 3 and formula 4, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 are each independently an alkyl group having a carbon number of 1 to 20. 2.The high-reliability liquid lens of claim 1, wherein, R1, R2, R3, R4 and R5 are each independently any one of a methyl group, an ethyl group, an isopropyl group, a n-propyl group, an isopropyl group, a n-butyl group, an isobutyl group or a phenyl group. 3.The high-reliability liquid lens of claim 1 or 2, wherein, The aromatic compound comprises any one or a combination of at least two of 1-naphthyl-1,1,3,3,3-pentamethyldisiloxane, 1-naphthyl-1,1-diethyl-3,3,3-trimethyldisiloxane, 1-naphthyl-1,1,3,3,3-pentamethyldigermae, 1-naphthyl-1,1-diethyl-3,3,3-trimethyldigermae, 1,1,3,3-tetramethyl-1,3-diphenyldisiloxane, 1,3-diethyl-1,3-dimethyl-1,3-diphenyldisiloxane or 1,3-dimethyl-1,1,3,3-tetraphenyl disiloxane. 4.The high-reliability liquid lens of claim 1, wherein, The aliphatic silane compound comprises hexamethyldisilane and / or hexaethyldisiloxane. 5.The high-reliability liquid lens of claim 1, wherein, The aliphatic germane compound comprises any one or a combination of at least two of hexamethyldigermae, hexaethyldigermae, tetraethyl germane or tetra-n-butyl germane. 6.The high-reliability liquid lens of claim 1, wherein, The refractive index of the aromatic compound is > 1.5100 n D 20 . 7.The high-reliability liquid lens of claim 1, wherein, The density of the aromatic compound is 0.900 to 1.300 g / cm 3 . 8.The high-reliability liquid lens of claim 1, wherein, The number average molecular weight of the aromatic compound is ≤800. 9.The high-reliability liquid lens of claim 1, wherein, The boiling point of the aromatic compound is ≥150℃. 10.The high-reliability liquid lens of claim 1, wherein, The refractive index of the insulating liquid is > 1.4900 n D 20 . 11.The high-reliability liquid lens of claim 1, wherein, The density difference between the conductive liquid and the insulating liquid is < 0.01 g / cm 3 . 12.The high-reliability liquid lens of claim 1, wherein, The conductive liquid comprises a solvent and an additive. 13.The high-reliability liquid lens of claim 1, wherein, The freezing point of the conductive liquid is ≤-30℃. 14.The high-reliability liquid lens of claim 1, wherein, The boiling point of the conductive liquid is ≥120℃.

15. The high-reliability liquid lens of claim 12, wherein, The solvent comprises any one or a combination of at least two of water, ethylene glycol or propylene glycol.

16. The high-reliability liquid lens of claim 12, wherein, The additive comprises an inorganic salt and / or an organic salt.

17. The high-reliability liquid lens of claim 12, wherein, The volume percentage of the additive in the conductive liquid is 0.1%-5%.

18. The high-reliability liquid lens of claim 16, wherein, The inorganic salt comprises sodium chloride and / or sodium bromide.

19. The high-reliability liquid lens of claim 16, wherein, The organic salt comprises potassium acetate and / or cesium acetate.

20. The high reliability liquid lens of claim 1, wherein, The high-reliability liquid lens comprises an upper transparent substrate, a lower transparent substrate, a fluid chamber, an upper electrode and a lower electrode, the upper transparent substrate is fixed on the upper electrode, the lower transparent substrate is fixed on the lower electrode, the fluid chamber is arranged between the upper transparent substrate and the lower transparent substrate, the fluid chamber is filled with a conductive liquid and an insulating liquid, the conductive liquid is close to the upper transparent substrate, and the insulating liquid is close to the lower transparent substrate, a liquid-liquid interface is formed between the two-phase liquid of the conductive liquid and the insulating liquid, an insulating layer or a hydrophobic layer is arranged between the lower electrode and the lower transparent substrate, and the lower electrode and the two-phase liquid form a three-phase interface at an intersection.

21. The high-reliability liquid lens of claim 20, wherein, The insulating layer or the hydrophobic layer comprises any one or a combination of at least two of p-xylene linear polymer, siloxane or amorphous fluorine-containing polymer.

22. Use of a high reliability liquid lens according to any one of claims 1 to 21 in a camera, a cell phone, an endoscope, a code scanner, a telemeter or a dental camera.

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