An Eulerian Numerical Method for Geometric Optics
نویسنده
چکیده
R esum e. La description classique du probl eme de l'optique g eom etrique est La-grangienne. Le passage a la repr esentation Eul erienne est possible mais, en pr esence de caustiques, ne permet pas de calculer la solution Lagrangienne compl ete. On pr esente le contexte math ematique du probl eme ainsi que quelques outils num eriques d evelop-p es pour lever cette limitation. Abstract. The classical description for geometric optics is Lagrangian. It is possible to switch to an Eulerian representation but, in presence of caustics, the full Lagrangian solution cannot be computed using a Eulerian method. We present the mathematical background of the problem and several numerical tools developed to overcome this limitation.
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