Glass manufacturing – Processes – With shaping of particulate material and subsequent fusing...
Patent
1991-11-25
1993-01-05
Lindsay, Robert L.
Glass manufacturing
Processes
With shaping of particulate material and subsequent fusing...
65 311, 65 13, 65 29, 65158, 65160, 65DIG13, 356 731, 356385, C03B 37025, C03B 3707
Patent
active
051767317
ABSTRACT:
In a device for performing measurements on at least partly transparent objects such as optical fibres a radiation beam is directed on the object. The radiation deflected by the object is imaged by means of a lens system (321, 322) on a radiation-sensitive detection system (330). As a result of refraction on interfaces between areas having a different refractive index (311, 312) in the object and between the object and the surroundings (315), dark or light bands corresponding to the projection of the interfaces are produced on the radiation-sensitive detection system (330). Thus measurements can be performed on the internal structure of the object.
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Jochem Cornelis M. G.
Prast Gijsbert
Botjer William L.
Lindsay Robert L.
U.S. Philips Corp.
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