Liquid Crystal Lens Driven by Two voltages

摘要

A two-voltage-driving technique is applied to build liquid crystal (LC) lens and LC microlens. One bias voltage is fixed and the other one varies to control the focal length of the LC lens or the LC microlens. The range of the variable focus is wide, and in the entire focus range the optical quality is preserved. The application of the LC lens as a focusing lens for cameras is demonstrated.