Single in-line fiber-optic rotary joint

Details Single in-line fiber-optic rotary joint Single in-line fiber-optic rotary joint

1995-07-14

1996-09-03

Lee, John D.

Optical waveguides

With optical coupler

Movable coupler

385 25, G02B 626

Patent

active

055531768

ABSTRACT:
A single in-line fiber-optic rotary joint includes inner and outer concenc body portions which are rotatable relative to each other around a common longitudinal axis. An optical to electrical converter is mounted in the inner body portion and it is operative for receiving an incoming optical signal and converting it to a corresponding electrical signal. A light source mounted along the longitudinal axis of the inner body portion receives the converted electrical signal and emits a corresponding light signal along the longitudinal axis. A light detector is positioned along the longitudinal axis in the outer body portion wherein it receives the light signal and generates a corresponding electrical signal. The electrical signal from the light detector is received by an electrical to optical converter which converts the electrical signal back to an optical signal, thus establishing a complete pathway through the rotary joint.

REFERENCES:
patent: 4373779 (1983-02-01), Dorsey
patent: 4472052 (1984-07-01), Lofgren
patent: 4529986 (1985-07-01), d'Auria et al.
patent: 4587812 (1986-05-01), Brega

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