Chinese Optics, Volume. 18, Issue 1, 78(2025)
Optimizing structural parameters of electrowetting triple-liquid lens based on joint simulation technology
Fig. 6. Simulated initial focal length as a function of (a) height and (b) taper
Fig. 7. Diagrams of simulated zoom range as a function of (a) height and (b) taper
Fig. 11. Diagrams of initial focal length as a function of (a) height and (b) taper
Fig. 12. Diagrams of zoom range as a function of (a) height and (b) taper
Table 1. Parameter settings
View tableView in ArticleTable 1. Parameter settings
Parameter Value Remark $ {\gamma }_{1} $ /N·m−10.05 Surface tension1([EMIm][NTf2]＆C12H25Br) $ {\gamma }_{2} $ /N·m−10.069 Surface tension2(C12H25Br＆1%SDS) $ \varepsilon $ 3.15 Relative dielectric constant $ {\theta }_{0} $ /°80 Zero voltage contact angle([EMIm][NTf2]＆C12H25Br) $ {\theta }_{1} $ /°65 Zero voltage contact angle(C12H25Br＆1%SDS) $ d $ /μm8 Dielectric thickness
Table 2. Liquid parameter settings
View tableView in ArticleTable 2. Liquid parameter settings
Liquid Density/kg·m−3 Refractive index Viscosity/10−3Pa·s [EMIm][NTf2] 1380 1.4227 32.00 C12H25Br 1039 1.458 3.60 1%SDS 1000 1.335 2.70
Table 3. Even aspherical coefficients
View tableView in ArticleTable 3. Even aspherical coefficients
Even asphere b c d e Lower interface Upper interface 0.099 0.106 0.001 0.002 0 0 0 0
Table 4. Structural parameters of proposed system
View tableView in ArticleTable 4. Structural parameters of proposed system
Surface Type Radius Thickness Glass Semi- diameter OBJ Standard Infinity Infinity 0 STO Standard Infinity 0.5 K9 2 2 Standard Infinity 2.3 Conductive liquid1 2 3 Even asphere Infinity 2.4 Insulating liquid 2 4 Even asphere Infinity 3.3 Conductive liquid2 2 5 Standard Infinity 0.5 K9 2 6 Standard Infinity 20 K9 2 IMA Standard Infinity － 4
Table 5. Parameter values of the triple-liquid lens component
View tableView in ArticleTable 5. Parameter values of the triple-liquid lens component
Height/mm Taper/° Label 8 10 L1 15 L2 20 L3 10 10 L4 15 L5 20 L6 12 10 L7 15 L8 20 L9
Table 6. Experimental data
View tableView in ArticleTable 6. Experimental data
Number Initial focal length /mm Drive voltage /V Threshold voltage /V L1 −36.2 60 120 L2 −36.9 60 120 L3 −45.5 60 120 L4 −38.5 60 120 L5 −49.5 60 120 L6 −51.3 80 140 L7 −40.7 80 140 L8 −47.2 80 140 L9 −57.1 80 140
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Peng HUANG, Yue SONG, Fei-Qiang ZHOU, Yi-Hang ZHOU, Guo-Qiang HE, Zhong-Yi XIE, Xin-Long ZHANG. Optimizing structural parameters of electrowetting triple-liquid lens based on joint simulation technology[J]. Chinese Optics, 2025, 18(1): 78
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Received: Jul. 12, 2024
Accepted: Sep. 24, 2024
Published Online: Mar. 14, 2025
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