Fibre optic interrogation system.

摘要

The fibre optic interrogation system comprises a plurality of collection fibres. A first end of each collection fibre is arranged to collect radiation from a particular zone and the second, opposite ends of the collection fibres are arranged in a pattern that permits such second ends to be interrogated individually for radiation transmission by the relevant collection fibre. Those collection fibres which have their first ends adjacent to one another have their second ends is in non-adjacent positions in the pattern. The system finds application inter alia in diamond sorting. <IMAGE>