Device for coupling light to and from a light guide

Details Device for coupling light to and from a light guide Device for coupling light to and from a light guide

1989-04-13

1990-10-16

Healy, Brian

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350 9610, 350 9616, 350 9629, 350 9630, 350 9632, 25022711, 25022725, 455612, 455617, G02B 626, G02B 620, H01J 516, G02F 100

Patent

active

049629867

ABSTRACT:
A device for variably coupling light to and from a light guide is provided. he device couples light into or out of a light guide while the coupling device is moved relative to a fixed light guide or while a light guide is moved relative to the coupling device. In one embodiment, the present invention comprises moveably contacting with the core of the light guide a conducting solid having an index of refraction greater than the index of refraction of the medium surrounding the light guide. In an alternative embodiment, the present invention comprises sliding the core of the light guide into a chamber filled with a liquid having an index of refraction higher than the index of refraction of the medium surrounding the remainder of the light guide and placing a transducer in the chamber in contact with the fluid. In an application of the invention it provides information transmission path between a data source and a data receiver of the type which may move relative to each other as in the case of controlled industrial mechanisms.

REFERENCES:
patent: 4060308 (1977-11-01), Barnoski et al.
patent: 4125768 (1978-11-01), Jackson et al.
patent: 4675521 (1987-06-01), Sugimoto
patent: 4732446 (1988-03-01), Gibson et al.
patent: 4749248 (1988-06-01), Aberson, Jr. et al.
patent: 4749249 (1988-06-01), Hockaday et al.
patent: 4863229 (1989-09-01), Yasui
patent: 4887879 (1989-12-01), Prucnal et al.
patent: 4889403 (1989-12-01), Zucker et al.

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