Analysis and development of non diffracting arrays for the design of specialized imaging systems
type: Distribution
access URL: https://theses.hal.science/tel-00780071
format: HTML
issued: 2026-05-14T23:36:04.852718
modified: 2026-05-14T23:36:04.812702

Analysis and development of non diffracting arrays for the design of specialized imaging systems
type: Dataset
contact point: Organization
  fn: CCSD
keyword: co-design
keyword: continuously-self-imaging-objects
keyword: objets-continument-auto-imageants
keyword: imagerie-specialisee
keyword: theses
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: 3d-imagery
keyword: co-conception
keyword: specialized-imagery
keyword: infoeu-reposemanticsdoctoralthesis
keyword: imagerie-3d
landing page: https://theses.hal.science/tel-00780071
description: Currently, detectors with high performances and a low cost are available and lead the community of optical designers to a new paradigm. Instead of designing generalist cameras, suitable for fulfilling a high number of different observation missions, it is now more and more common to develop imaging systems adapted to a unique mission and/or a unique object class. Taking this a priori knowledge on the observed scene or on the mission into account, at the beginning of the design process, allows us to consider simpler imaging systems with new properties. The aim of this thesis is to investigate the possibilities of nondiffracting array for the design of specialized imaging systems. For this study we consider the environment of unmanned aerial vehicles with a small payload capacity, for which embedded imaging systems must be simple and robust. We consider in addition that the mission of the imaging system is to detect obstacles. To do this, it must provide a 3D information on the observed scene. At first, I have analysed the properties of the imaging system composed by a nondiffracting optical device and a focal plane array. The comparison between two devices, axicon and nondiffracting arrays, allowed me to show that the second one is best suited for achieving this kind of mission. Then, I have made a practical implementation of such an imaging system. Finally, I have used it to demonstrate the 3D imaging property. This study has demonstrated the potential of nondiffracting array to design a simple and robust imaging system dedicated to 3D imaging. This work must be continued in partnership with the industry to apply the co-design process to a more precise mission, transforming this way this theoretical work into an industrial prototype.
identifier: NNT: 2012PA112393
issued: 2026-05-14T23:36:04.847932
language: fr
modified: 2026-05-14T23:36:04.847939

test_moissonnage_selune
type: Agent