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US 4,733,093 AGranted
Electronic apparatus with circuit cards and signals optically coupled therebetween
AssigneeNorthern Telecom Limited
InventorsAlan F. Graves, Ernst A. Munter
Life of this patent
Estimating the term…
Abstract
Optical signals are coupled between circuit cards, electrically connected to a backpanel, by means of parallel elongate optical conductors formed by an optically conductive plastics moulding mounted on the backpanel. Each elongate optical conductor ends in an inclined face to direct an optical signal between the optical conductor and an optical signal source or detector on a respective circuit card.
Claims20
Electronic apparatus comprising:
- a backpanel;
- a plurality of circuit cards arranged perpendicularly to and electrically connected to the backpanel;
- optical coupling means on said circuit cards for emitting optical signals to or receiving optical signals from the backpanel;
- and
- an optically conductive plastics moulding on the backpanel for coupling the optical signals between the circuit cards.
2 more elements
Electronic apparatus comprising:
- a backpanel;
- a plurality of circuit cards arranged in parallel planes perpendicularly to the backpanel, the circuit cards being removably electrically connected to the backpanel;
- optical signal emitting means on a first circuit card for emitting an optical signal to the backpanel;
- optical signal receiving means on a second circuit card for receiving an optical signal from the backpanel;
- and
- an optically conductive plastics member on the backpanel for coupling the optical signal emitted by the optical signal emitting means to the optical signal receiving means.
3 more elements
Dependencies are inferred from the claim text.