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Proceedings Paper

Flat lensless phase imager
Author(s): Manon Rostykus; Christophe Moser
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Paper Abstract

Lensless imaging refers to an imaging technique which requires no imaging element between the light transmitted by the sample and the camera. This configuration enables designing compact devices. In the visible range, it is mainly investigated for microscopy, because of the high resolution (sub-micrometer) and large field of view (camera chip size) that it provides. Current implementations use illumination sources positioned above the sample several centimeters away making the lensless imager bulky in height. Here we demonstrate an implementation with the illumination sources side illuminating a Dove prism onto which analog holograms are laminated. Diffraction from the analog holograms provides the multiple angle illumination. This results in a flat phase lensless imager.

Paper Details

Date Published: 7 March 2016
PDF: 4 pages
Proc. SPIE 9699, Optics and Biophotonics in Low-Resource Settings II, 96990Q (7 March 2016); doi: 10.1117/12.2211582
Show Author Affiliations
Manon Rostykus, École Polytechnique Fédérale de Lausanne (Switzerland)
Christophe Moser, École Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 9699:
Optics and Biophotonics in Low-Resource Settings II
David Levitz; Aydogan Ozcan; David Erickson, Editor(s)

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