Swivelling optical connector for joining optical fibres to discrete optical components and sensor using one or more optical connectors

The invention relates to an optical connector adapted to join an optical fibre to an optical equipment or component (1), comprising an outer support (10, 10') to be fixedly connected to the equipment, provided with a housing (11,11') accommodating a movable element (9) having a spherical-surface portion to which an optical fibre-holding body (7) is connected, the spherical surface of the movable element being in contact with a surface of the outer support mating in adapted to enable the rotation of the element and the body housing the fibre (F) about any axis passing by the centre (C) of the spherical surface itself, tightening means (12, 23) for locking the spherical-surface movable element against the respective housing being present, which means is adapted to cause the rotation of the movable element itself to be prevented by friction; the connector can be made of dielectric materials.