2. Coded masks

Coded masks are the ancestors of COBAI, as is the pinhole for focusing binary optics [E 4 045] . The gamma-ray and X-ray fields have proposed to counterbalance the low sensitivity of the pinhole by imaging the scene not with one, but with a multitude of pinholes. Here, the pinhole size is based on the case of a generalized Fresnel number $F N ≫ 1$ (

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Coded masks

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page COBAI properties

Periodic masks (Talbot effect)

Bibliography

(1) - DRUART (G.) - Nouvelles briques de conception de systèmes intégrés pour la vision infrarouge. D'une approche minimaliste à la camera sur puce. - Thèse (2009).
(2) - DICKE (R.H.) - Scatter-hole cameras for X-rays and gamma rays. - Astrophys....

Patents

M. Piponnier, J. Primot, G. Druart and N. Guérineau. Guérineau, "Method and device for telemetric imaging", FR2994735(B1), EP2700902(B1), US2014055606(A1), JP2014041126(A), CN103632161(A), 2012

Websites

https://en.wikipedia.org/wiki/Coded_aperture

https://en.wikipedia.org/wiki/Modified_Uniformly_Redundant_Array

Software tools

Unified optical design software " Wyrowski VirtualLab Fusion ", developed by Wyrowski Photonics UG, distributed and supported by LightTrans GmbH, Jena, Germany

Directory

The study of binary optics is an old discipline and belongs to the toolbox of the researcher/engineer who can revisit these concepts according to his or her application needs. The bulk of current work in photolithography is in the field of nanotechnology and plasmonics, which are not covered in this article. The teams mentioned below have published articles that inspired this article, or have carried out work known to the authors....