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公开(公告)号:WO1988001373A1
公开(公告)日:1988-02-25
申请号:PCT/US1987001502
申请日:1987-06-29
Applicant: HUGHES AIRCRAFT COMPANY
Inventor: HUGHES AIRCRAFT COMPANY , POLLACK, Slava, A. , SHIH, I-FU , TZENG, Robert
IPC: G01M11/00
CPC classification number: G01M11/33 , G01J1/4257
Abstract: Apparatus for measuring the numerical aperture of an optical fiber in the infrared region. The optical fiber (8) is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber (8). At a predetermined distance from the end of the optical fiber, a conversion screen (10) can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.
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公开(公告)号:EP0278956B1
公开(公告)日:1991-05-22
申请号:EP87904597.9
申请日:1987-06-29
Applicant: Hughes Aircraft Company
Inventor: POLLACK, Slava, A. , SHIH, I-FU , TZENG, Robert
CPC classification number: G01M11/33 , G01J1/4257
Abstract: Apparatus for measuring the numerical aperture of an optical fiber in the infrared region. The optical fiber (8) is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber (8). At a predetermined distance from the end of the optical fiber, a conversion screen (10) can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.
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公开(公告)号:EP0278956A1
公开(公告)日:1988-08-24
申请号:EP87904597.0
申请日:1987-06-29
Applicant: HUGHES AIRCRAFT COMPANY
Inventor: POLLACK, Slava, A. , SHIH, I-FU , TZENG, Robert
CPC classification number: G01M11/33 , G01J1/4257
Abstract: Appareil pour mesurer l'ouverture numérique d'une fibre optique dans la région infrarouge. La fibre optique est montée de manière appropriée conformément aux normes d'essai classiques. On transmet de l'énergie infrarouge à travers les fibres optiques. A une distance prédéterminée de l'extrémité de la fibre optique, on peut disposer un écran de conversion pour transformer l'énergie infrarouge émise en une énergie de longueur d'onde inférieure. On peut enregistrer la distribution d'énergie à l'aide d'un détecteur compatible avec l'énergie de longueur d'onde inférieure, l'ouverture numérique pouvant être calculée à partir des données enregistrées.
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