We report a polymer-stabilized liquid crystal (LC) microlens array with a large dynamic range and fast response time. The top substrate has a planar indium-tin oxide (ITO) electrode, while the bottom substrate has two patterned ITO electrodes for generating a fringing field and uniform longitudinal field. The fringing field is utilized to create the desired gradient refractive index profile in the LC/monomer layer, which is later stabilized by UV curing to form polymer networks. To tune the focal length, we apply a longitudinal field to change the lens shape. This microlens array offers several attractive features, such as large dynamic range, fast response time, and good mechanical stability.
© 2013 Optical Society of America
Original Manuscript: July 15, 2013
Revised Manuscript: July 23, 2013
Manuscript Accepted: July 23, 2013
Published: August 14, 2013
Hongwen Ren, Su Xu, and Shin-Tson Wu, "Polymer-stabilized liquid crystal microlens array with large dynamic range and fast response time," Opt. Lett. 38, 3144-3147 (2013)