Optical slip ring

Details Optical slip ring Optical slip ring

1981-11-23

1987-12-08

Sikes, William L.

G02B 626, G02B 642

Patent

active

047115165

ABSTRACT:
To couple light signals between two relatively rotating parts, two rings of transparent material, each mounted on one of the parts, are provided on a common axis and have a slight spacing between their rings which is filled with an index matching fluid. Recesses in each ring are provided to receive light emitters or detectors, respectively. Each recess defines a curved wall serving as a light collection or focusing lens which serves as a window into or out of a ring. The assembly is completed by a pair of coaxial spacers or retainers each of which are mounted on one of the relatively rotating parts and also secured to one of the transparent rings. Light coupled into one of the rings through a window is transmitted by the index matching fluid to the other ring and it is emitted from a window of that ring.

REFERENCES:
patent: 4109998 (1978-08-01), Iverson

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