Aspheric surface calibrator

DOI	Trouver le DOI : https://doi.org/10.1364/AO.20.003367
Auteur	Rechercher : Powell, Ian¹
Affiliation	Conseil national de recherches Canada
Format	Texte, Article
Résumé	A new type of aspheric surface calibrator has been developed at the National Research Council of Canada. It employs a nonmechanical contact technique for measuring rotationally symmetrical uncoated concave optical surfaces which depart from a sphere by as much as 0.5 mm with a precision of 0.3 μm. Using two precise air bearings for providing rotations about two mutually perpendicular axes, a focused laser beam is scanned across the surface under test. A fringe counting process measures the difference in sag between the surface shape and some reference sphere. Two surfaces, one spherical and the other ellipsoidal, were measured to illustrate the practicality of such an instrument.
Date de publication	1981-10-01
Maison d’édition	OSA Publishing
Dans	Applied Optics 20, nº 19 : 3367–3377.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro du CNRC	NRC-19465 NRC-INMS-3384
Numéro NPARC	8898984
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	17d115ca-d945-4c65-8258-a0cf88832812
Enregistrement créé	2009-04-22
Enregistrement modifié	2020-03-13

Détails de la page