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Proceedings Paper

Using DSLR cameras in digital holography
Author(s): Diego Hincapié-Zuluaga; Jorge Herrera-Ramírez; Jorge García-Sucerquia
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Paper Abstract

In Digital Holography (DH), the size of the bidimensional image sensor to record the digital hologram, plays a key role on the performance of this imaging technique; the larger the size of the camera sensor, the better the quality of the final reconstructed image. Scientific cameras with large formats are offered in the market, but their cost and availability limit their use as a first option when implementing DH. Nowadays, DSLR cameras provide an easy-access alternative that is worthwhile to be explored. The DSLR cameras are a wide, commercial, and available option that in comparison with traditional scientific cameras, offer a much lower cost per effective pixel over a large sensing area. However, in the DSLR cameras, with their RGB pixel distribution, the sampling of information is different to the sampling in monochrome cameras usually employed in DH. This fact has implications in their performance. In this work, we discuss why DSLR cameras are not extensively used for DH, taking into account the problem reported by different authors of object replication. Simulations of DH using monochromatic and DSLR cameras are presented and a theoretical deduction for the replication problem using the Fourier theory is also shown. Experimental results of DH implementation using a DSLR camera show the replication problem.

Paper Details

Date Published: 22 August 2017
PDF: 9 pages
Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 1045322 (22 August 2017); doi: 10.1117/12.2275672
Show Author Affiliations
Diego Hincapié-Zuluaga, Instituto Tecnológico Metropolitano (Colombia)
Univ. Nacional de Colombia Sede Medellín (Colombia)
Jorge Herrera-Ramírez, Instituto Tecnológico Metropolitano (Colombia)
Jorge García-Sucerquia, Univ. Nacional de Colombia Sede Medellín (Colombia)

Published in SPIE Proceedings Vol. 10453:
Third International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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