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Letteratura scientifica selezionata sul tema "Optique imageante"
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Articoli di riviste sul tema "Optique imageante"
Müller, J., R. Perrone, K. H. Drüe, R. Stephan, J. Trabert, M. Hein, D. Schwanke et al. "Comparison of High-Resolution Patterning Technologies for LTCC Microwave Circuits". Journal of Microelectronics and Electronic Packaging 4, n. 3 (1 luglio 2007): 99–104. http://dx.doi.org/10.4071/1551-4897-4.3.99.
Testo completoDRUART, Guillaume, Florence DE LA BARRIERE e Nicolas GUERINEAU. "Optiques binaires et application à l’imagerie - Optiques auto-imageantes". Optique Photonique, gennaio 2019. http://dx.doi.org/10.51257/a-v1-e4046.
Testo completoSandstrom, Clifford, e Tim Olson. "Mask-less Laser Direct Imaging & Adaptive Patterning for Fan-Out Heterogeneous Integration". IMAPSource Proceedings 2022, DPC (14 novembre 2023). http://dx.doi.org/10.4071/001c.90153.
Testo completoTesi sul tema "Optique imageante"
Gorini, Luca. "Geometric shape optimization for reflective optics". Electronic Thesis or Diss., Institut polytechnique de Paris, 2024. http://www.theses.fr/2024IPPAX127.
Testo completoIn this thesis, we are interested in the shape optimization of telescopes mirrors based on the Hadamard's boundary variation method. Two models are proposed in order to described propagation of light in the telescope. The first model we consider is a theoretical scattering problem at finite frequency around a metallic mirror. We propose a cost function involving the electromagnetic field on the focal plane and whose limit corresponds to some optical criteria. To this aim, a pseudo-differential operator on the focal plane is used. Its symbol allows to represent phase space regions where we want to concentrate rays.Once a cost defined, we obtain a shape derivative of the cost with the Hadamard's method. Using limit measures of Wigner transforms of direct and adjoint states, high frequency limits of shape derivatives are expressed.The second model we consider is a ray tracing model. Two entrant random variables model position and direction at the telescope entrance. Once propagated according to Snell-Descartes laws, two random variables representing position and direction of rays on the focal plane are obtained. We adapt the Hadamard's method to the case of random variables depending on mirrors shapes. Shape derivatives for rather general costs are obtained.This second approach is useful to characterize more precisely the limit measures involved in the high frequency limit of shape derivatives obtained in the Maxwell's case. In those cases, an adjoint state is derived and a new practical expression of the shape derivative is given.Numerical simulations are performed on simple optical examples in order to validate the shape derivative
Druart, Guillaume. "Nouvelles briques de conception de systèmes intégrés pour la vision infrarouge". Phd thesis, Université Paris Sud - Paris XI, 2009. http://tel.archives-ouvertes.fr/tel-00458150.
Testo completoLucat, Antoine. "Acquisition opto-numérique de vêtements asiatiques anciens". Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0012.
Testo completoDigitization is a major issue of interest in the field of cultural heritage, allowing on the one hand the long-term safeguard of collector’s pieces, and on the other hand to valorize them under a new revelatory way. In collaboration with the Musée d’Ethnographie de Bordeaux (MEB), this thesis work has the objective of proposing an innovative solution in terms of digitization, by answering the following problem : how to faithfully reproduce the appearance of a collector’s piece, such that the digital version is, to the eye, indistinguishable from the real object ? The size of the objects to be digitized as well as the resolution necessary to obtain the desired quality imply an astronomical quantity of measurements to be carried out, forming a real technical and scientific challenge. This thesis proposes to respond to this observation by producing an innovative imagebased acquisition prototype, formed by a dome covered with 1080 LEDs within which a camera on a robotic arm evolves. This work is first supported by a bundle of preliminary research, focusing on the theoretical and practical issues attached to such a measurement. This notably made it possible to highlight to what extent diffraction plays an important role in BRDF measurements, far beyond the usual criteria. In this sense, a new metrologically viable data processing algorithm has been proposed. Supported by these achievements, the digitization prototype has been designed, produced, calibrated and finally successfully used for the safeguarding of the cultural heritage. This new, constantly evolving instrument then lays the foundation stone for many areas of future research, both focused on optimizing the measurement process and on exploiting the generated data