A light guide member for guiding light received from a light source unit, the light source unit illuminating light toward the light guide member, the light guide member may include a plurality of first grooves on a first side of the light guide member, the first grooves extending along a first direction, and a plurality of first projections projecting from surfaces of the first grooves.

 
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< Conductor module, especially of an optical fibre type, having longitudinal impenetrability and controlled relative slippage, and associated method of production

> Sensor device

~ 00448