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Machine translation
1. (WO1981002634) MEASUREMENT OF REFRACTIVE INDEX PROFILE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002634    International Application No.:    PCT/GB1981/000040
Publication Date: 17.09.1981 International Filing Date: 11.03.1981
IPC:
G01N 21/41 (2006.01)
Applicants:
Inventors:
Priority Data:
8008158 11.03.1980 GB
Title (EN) MEASUREMENT OF REFRACTIVE INDEX PROFILE
(FR) MESURE DU PROFIL D'INDICE DE REFRACTION
Abstract: front page image
(EN)A method of sensing the optical deflection function of an approximately cylindrical object, such as an optical fibre preform, comprises illuminating the object with collimated light; focusing the transmitted light so that in the focal plane the distance of the light from the optical axis is linearly proportional to the angle through which light has been deviated by the object; optically modulating the focused light so that a property of the light varies as a function of said distance, and calculating the deflection function from the modulated light. The modulations may be spatial or temporal. The refractive index profile can also be calculated.
(FR)Procede de detection de la fonction de deflexion optique d'un objet approximativement cylindrique, tel qu'une ebauche de fibre optique, comprenant l'eclairage de l'objet avec une lumiere collimatee; la focalisation de la lumiere transmise de maniere telle que, dans le plan focal, la distance de la lumiere a l'axe optique soit lineairement proportionnelle a l'angle sous lequel la lumiere a ete deviee par l'objet; la modulation optique de la lumiere focalisee de maniere telle qu'une propriete de la lumiere varie en fonction de ladite distance; le calcul de la fonction de deflexion a partir de la lumiere modulee. Les modulations peuvent se situer dans l'espace ou dans le temps. Le profil d'indice de refraction peut aussi etre calcule.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)