Polymer lenses with antireflection structures prepared using anodic porous alumina molds

Abstract

In this study, a nanoimprinting process was used with anodic porous alumina as a mold to fabricate polymer lenses with antireflection structures. The antireflection structures were composed of a tapered pillar array, which served to suppress the reflectance of incident light of visible wavelengths. It was also demonstrated that polymer lenses with a tapered hole array on their surface could be obtained by injection molding using a Ni mold prepared through electroforming by depositing Ni with anodic porous alumina as a template. The polymer lenses with antireflection structures demonstrated in this study should be applicable for various types of functional optical devices, such as cameras, optical microscopes, etc.