Micro-lens aperture array for enhanced thin-film imaging using luminescent concentrators.

We present a 300 mu m thick optical Sigler collimator realized by X-ray lithography on a PMMA wafer which, when paired with luminescent concentrator films, firms the first complete prototype of a short-distance, flexible, scalable imaging system that is less than 1 mm thick. We describe two ways of increasing the light-gathering ability of the collimator by using hexagonal aperture cells and embedded micro-lenses, evaluate a new micro-lens aperture array (MLAA) for proof of concept, and analyze the optical imaging properties of flexible MLAAs when realized as thin films. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement