title: Relevance of continuously self-imaging gratings for noise robust imagery.
abstract: We have designed miniaturized, simple, and robust cameras composed of a single diffractive optical element (DOE) that generates a continuously self-imaging (CSI) beam. Two different DOEs are explored: the J0 Bessel transmittance, characterized by a continuous optical transfer function (OTF) and the CSI grating (CSIG), characterized by a sparse OTF. In this Letter, we will analyze the properties of both DOEs in terms of radiometric performances. We will demonstrate that the noise robustness is enhanced for a CSIG, thanks to the sparsity of its OTF. A camera using this DOE has been made and experimental images are presented to illustrate the noise robustness.
authors.affiliation: ONERA-The French Aerospace Laboratory, Palaiseau, France. martin.piponnier@onera.fr
authors.forename: Martin
authors.initials: M
authors.lastname: Piponnier
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Horisaki
authors.forename: Guillaume
authors.initials: G
authors.lastname: Druart
authors.forename: Nicolas
authors.initials: N
authors.lastname: Guérineau
authors.forename: Alain
authors.initials: A
authors.lastname: Kattnig
authors.forename: Jérôme
authors.initials: J
authors.lastname: Primot