Fig. 1. Structural diagram of dielectric liquid lens. (a) Diagram of droplet deformation principle of dielectric lens; (b) ITO electrode pattern

Fig. 2. Liquid lens package renderings

Fig. 3. Relationship between voltage and frequency

Fig. 4. Relationship between contact angle and frequency

Fig. 5. Relationship among focal length, aperture and frequency

Fig. 6. Dielectric lens zooming. (a) Initial image; (b) image after zooming; (c) zooming image after adjustment

Fig. 7. Drop deformation process in lens center. (a) Initial droplet shape; (b) droplet shape in zooming; (c) droplet shape after zooming