1978-06-26
1980-05-06
Hille, Rolf G.
350 9620, 350 9615, G02B 514
Patent
active
042014476
ABSTRACT:
A short length of step index fibre is placed in front of graded index fibre. Walls of the step index fibre form multiple images of its entrance face which are imaged by the graded index fibre to give a more nearly uniform illumination of the graded index fibre and thereby avoid the variable loss properties which can result from the repetitive focusing produced by point illumination or well collimated illumination.
REFERENCES:
patent: 3780295 (1973-12-01), Kapron et al.
patent: 3808549 (1974-04-01), Maurer
patent: 3832028 (1974-08-01), Kapron
patent: 3894789 (1975-07-01), Kobayashi et al.
Selway Peter R.
Thompson George H. B.
Hille Rolf G.
International Standard Electric Corporation
O'Halloran John T.
Van Der Sluys Peter C.
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