What is the depth of field reachable in practice with generic binary phase masks and digital deconvolution?

Alice Fontbonne (1) , Hervé Sauer (1) , Caroline Kulcsár (1) , Anne-Lise Coutrot (1) , François Goudail (1)

1 Laboratoire Charles Fabry / Imagerie et Information

We investigate the practical behavior of a co-optimized hybrid system involving a generic binary phase mask and digital deconvolution. We perform experiments with a case-study optical system with observed scene lighting by LED of different colors. By imaging a real scene and a depth of field (DoF) target, we show that the DoF reachable in practice matches with good accuracy the one predicted by simulation in case of monochromatic illumination. We also characterize the drop in performance when using this type of system with actual illumination wavelength departing from the nominal one.

Mots clés: image processing; binary phase masks; deconvolution; optical system codesign; wavefront coding; experimental validation

Domaines: Optique [physics.optics]

Alice Fontbonne, Hervé Sauer, Caroline Kulcsár, Anne-Lise Coutrot, François Goudail. What is the depth of field reachable in practice with generic binary phase masks and digital deconvolution?. Unconventional Optical Imaging II, SPIE proceedings, 11351, pp.113510F, 2020, ⟨10.1117/12.2557731⟩. ⟨hal-02529673⟩