Optical slip ring

Details Optical slip ring Optical slip ring

1989-04-25

1990-09-04

Lee, John D.

350 9620, G02B 626

Patent

active

049539329

ABSTRACT:
An improved optical slip ring is disclosed in which optical fibers are arranged in a predetermined pattern to transfer light energy from a non-rotating body to a rotating body. The optical slip ring of the present invention provides a predictable correlation between position and optical coupling. The invention 15 includes a first support 22 for a first plurality of optical fibers 20 arranged in a predetermined pattern around a radial axis. The invention 15 includes a second support 26 for a second plurality of optical fibers 24 arranged in a predetermined pattern around the same radial axis. In the illustrative embodiment, the first and second supports 22 and 26 are arranged so that the open ends of the first and second patterns of optical fibers are in face-to-face relation. Light energy transmitted through the open ends of the first plurality of optical fibers 20 is then received through the open ends of the second plurality of optical fibers 24 across a small gap. The arrangement of the first and second pluralities of optical fibers in a predetermined pattern provides an optimal alignment of the individual optical fibers of the first and second pluralities of optical fibers with respect to one another. This, in turn, facilitates a predictable correlation between the relative position of the first and second supports 22 and 26 and the optical coupling therebetween.

REFERENCES:
patent: 4109997 (1978-08-01), Iverson
patent: 4466695 (1984-08-01), Kruger
patent: 4492427 (1985-01-01), Lewis et al.
patent: 4791293 (1988-12-01), Barriere
patent: 4818860 (1989-04-01), Hasegawa
Henderson et al., "A Fiber Optic Rotational Coupler", Electron Components Cone, Arlington, Va. (U.S.A.), May 1977, pp. 557-560.

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