Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
1999-07-29
2001-07-17
Lee, John R. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S227210, C250S231140, C250S231180, C033S36300R, C340S870130
Reexamination Certificate
active
06262415
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a system and method for receiving and reading signals from an orientation sensor at great distances from a receiver using optical pickoff, signal multiplexing and optical telemetry with a single supply/return waveguide between the sensor and receiver.
The field to which the invention relates is that of orientation sensor systems using optical pickoff and optical telemetry.
BRIEF SUMMARY OF THE INVENTION
This invention utilizes optical pickoff and optical telemetry combined with optical multiplexing for receiving and reading signals from one or more orientation sensors, such as magnetic compasses. In these systems the sensors may be located at a great distance from the receiver. By using optical multiplexing, the orientation of a sensor can be interrogated with high precision, and the result returned over great distances, without susceptibility to electrical interference using a single supply/return waveguide, as opposed to the multiple waveguides needed by the prior art.
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Bright & Lorig P.C.
Kleiman David M.
Lee John R.
Litton Systems Inc.
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