A Microlens Array with Different Focal Lengths Fabricated by Roll-To-Roll UV Lithography

作者：Ye, Huichun; Shen, Lianguan; Li, Mujun^*; Li, Likai

来源：Polymers and Polymer Composites, 2018, 26(2): 155-159.

DOI：10.1177/096739111802600203

• Polymeric microlens array
• Roll-to-roll
• Precision manufactured
• UV imprint
• ZEMAX

A simple, highly efficient and low cost roll-to-roll (R2R) UV imprinting lithography facility was achieved for fabricating micro-structures. Firstly, a novel microlens array with focuses distributed on a curved surface was designed and analyzed by an optical software ZEMAX. Then an ultra-precision diamond machine was applied to generate the freeform microlens array features on the master mold, and a belt type polydimethylsiloxane (PDMS) mold with a microlens array pattern was prepared from the machined master mold. The R2R process was employed to replicate the microlens arrays, followed by an evaluation of their profiles and optical properties. Our experiments demonstrate that the applied method is reliable and efficient for producing the polymeric microlens arrays.

• 出版日期2018
• 单位中国科学技术大学