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

Indrajit Kurmi, D.C. Schedl, Oliver Bimber

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)29253-29261
Number of pages9
JournalOptics Express
Issue number22
Publication statusPublished - 29 Oct 2018
Externally publishedYes


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