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Introduction Optical sensors, and especially fibre optic sensors, offer some significant technical advantages over conventional electronic sensors. These technical advantages have been perceived to be sufficiently significant to have stimulated a large amount of research activity in the UK and elsewhere. Much of the original research has been carried out in universities and polytechnics, but there has also been considerable corporate R&D activity aimed at developing commercial products and systems. The results of much of this corporate work have not been published, except in the form of patents. Patents therefore provide a useful literature which, though of considerable interest to companies, is difficult to analyse and assimilate. For this reason, the DTI Advanced Sensors Technology Transfer Programme commissioned a study of recent optical sensor patents. The aim was to classify and analyse the patents, and to present the findings in a manner which a small or medium size instrumentation company could readily digest.

Sensor Review publishes the results of a major sensor survey.