E11-016

Length measuring instruments. Fringe counting, laser source interferometers.

Les lasers stabilisés sont actuellement, parmi les différents types d'étalons de référence, ceux garantissant la plus haute précision. De ce fait, l'interféromètre à laser est l'appareil mesureur qui permet le raccordement le plus direct à la définition de l'unité de longueur. En outre, ces interféromètres, associés à certains accessoires, permettent les mesurages de petits angles, de défauts de rectitude, de planéité et de perpendicularité. Il est donc normal que cet instrument trouve sa place dans la collection des textes normatifs relatifs à la métrologie dimensionnelle. C'est l'objet du présent document, qui est publié sous forme de fascicule de documentation dans la mesure où il donne des informations plutôt que des spécifications normatives.

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