Applying an electric field to the actuator creates changes in fluid pressure in the fluidic channel, which in turn changes the radius of curvature (i.e., focal length) of the fluidic microlens.

• 向致动器施加电场产生射流通道内流体压力的变化，这样又改变了射流微透镜的曲率半径(即焦距)。