Gap, overwind, and lead angle sensor for fiber optic bobbins

Details Gap, overwind, and lead angle sensor for fiber optic bobbins Gap, overwind, and lead angle sensor for fiber optic bobbins

1988-10-05

1990-05-29

Watkins, Donald

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

242 25R, B65H 5428

Patent

active

049289047

ABSTRACT:
A position sensor for sensing the position of an optical fiber with respect to the axis of a bobbin as the fiber is being wound to the bobbin. The apparatus and method illuminate the fiber being fed onto a bobbin with an externally incident energy which is internally reflected within a portion of the fiber. The position of the illuminated portion of the fiber is detected and the winding process may be controlled based on the detected position. In alternate embodiments, multiple radiation sources produce radiation with distinctive radiation characteristics and multiple sensors discriminate between and distinct radiation characteristics.

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