Polymer lenses with antireflection structures prepared using anodic porous alumina molds

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. (C) 2016 American Vacuum Society.