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Résolution : Capacité d’un instrument à observer les détails fins d’une image. Sa résolution est définie grâce à la grandeur d, la limite de séparation, qui est la distance minimale qui est la distance entre deux points vus séparément. On dit qu’ils sont résolus, soit : d = (0,61*λ) / ON, avec λ, la longueur d’onde de la lumière considérée, et ON, l’ouverture numérique.

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