Open AccessMicro-lens aperture array for enhanced thin-film imaging using luminescent concentrators
Author(s) -
Indrajit Kurmi,
David C. Schedl,
Oliver Bimber
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.029253
Subject(s) - optics , materials science , lens (geology) , collimator , aperture (computer memory) , wafer , lithography , concentrator , thin film , optoelectronics , luminescence , nanotechnology , physics , acoustics
We present a 300 μm thick optical Söller collimator realized by X-ray lithography on a PMMA wafer which, when paired with luminescent concentrator films, forms 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.