Photometric method and apparatus for measuring packing fraction

Details Photometric method and apparatus for measuring packing fraction Photometric method and apparatus for measuring packing fraction

1976-10-29

1978-05-23

Corbin, John K.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

G01N 2122

Patent

active

040907937

ABSTRACT:
The transmission efficiency of radiant energy through terminated fiber op cables depends substantially on the packing fraction of the specific fiber optic cable being employed. The invention method and apparatus enables any given length of sample fiber cable to be tested, at the installation site if necessary, to obtain a direct reading in terms of packing fraction. The method compares the light level of the energy transmission through a calibrated, solid core calibration rod of known diameter with the energy transmission through the sample terminated cable.

REFERENCES:
patent: 3625621 (1971-12-01), Fields
patent: 3770354 (1973-11-01), Tsuruta et al.
Kapany, N. S. Fiber Optics, New York, Academic Press, 1967, p. 169.

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