Abstract: Optical detection system having: an emitter providing a collimated light beam; a receiver receiving the collimated light beam, the receiver having: a receiver lens converging the collimated light beam along an optical axis, and a corner reflector, the corner reflector having three planar surfaces perpendicular to each other and a symmetry axis coinciding with an intersection point of the three planar surfaces and forming an equal angle with each of the planar surfaces, the corner reflector reflecting the collimated light beam about the symmetry axis. The optical axis of the receiver lens is parallel to the symmetry axis of the corner reflector.

Abstract: The invention relates to a shielded double-coil multilayer assembly intended to be used in an inductive detector. This multilayer assembly comprises a plurality of stacked parallel separated layers, namely: a layer (C1) comprising a first shielding element for a first coil, a layer (C2) comprising all or part of a first coil, a layer (C3) comprising all or part of a second coil, a layer (C4) comprising a first shielding element for the second coil.

Abstract: The invention relates to a shielded double-coil multilayer assembly intended to be used in an inductive detector. This multilayer assembly comprises a plurality of stacked parallel separated layers, namely: a layer (C1) comprising a first shielding element for a first coil, a layer (C2) comprising all or part of a first coil, a layer (C3) comprising all or part of a second coil, a layer (C4) comprising a first shielding element for the second coil.