Open AccessA transparent thin-film sensor for multi-focal image reconstruction and depth estimation
Author(s) -
Alexander Koppelhuber,
Clemens Birklbauer,
Shahram Izadi,
Oliver Bimber
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.008928
Subject(s) - optics , focal length , transparency (behavior) , image sensor , materials science , cardinal point , sampling (signal processing) , computer science , physics , lens (geology) , computer security , detector
We present a fully transparent and flexible light-sensing film that, based on a single thin-film luminescent concentrator layer, supports simultaneous multi-focal image reconstruction and depth estimation without additional optics. Together with the sampling of two-dimensional light fields propagated inside the film layer under various focal conditions, it allows entire focal image stacks to be computed after only one recording that can be used for depth estimation. The transparency and flexibility of our sensor unlock the potential of lensless multilayer imaging and depth sensing with arbitrary sensor shapes--enabling novel human-computer interfaces.