An electronic module (2; 40; 50; 60), comprising: - a base substrate; - a covering structure, coupled to the base substrate and forming, with said base substrate, a chamber; - an emitter arranged on said base substrate within said chamber, configured to generate a first radiation; - a first reflector in said chamber, adapted to reflect said first radiation; - a second reflector in said chamber, adapted to reflect said first radiation; - a first window, extending through the covering structure, transparent to said first radiation; - a second window, extending through the covering structure at a distance from said first window, transparent to a second radiation coming from an environment out of said chamber; - a detector arranged on said base substrate within said chamber, configured to sense said second radiation; and - a printed circuit board in the chamber, wherein: - said first reflector and said emitter are electrically coupled to the printed circuit board; - the emitter, the first reflector and the second reflector are reciprocally arranged such that the first radiation generated by the emitter is received by the second reflector, reflected towards the first reflector by the second reflector, and reflected towards the first window by the first reflector, thus forming an output of said electronic module (2; 40; 50; 60), - the detector and the second window are reciprocally arranged such that the second radiation passing through the second window is received by the detector, - the base substrate has a top surface parallel to a reference plane, the electronic module further comprising: a first supporting structure, extending in the chamber, having a supporting surface which is inclined with respect to said reference plane; and a second supporting structure, extending in the chamber, having an own supporting surface which is inclined with respect to said reference plane; the first reflector is coupled to the supporting surface of the first supporting structure, and the second reflector is coupled to the supporting surface of the second supporting structure; and - the supporting surfaces (8a, 14a) of the first and second supporting structures (8, 14) face one another so that the radiation generated by the emitter and received by the second reflector is directly reflected to the first reflector by the second reflector, - the printed circuit board is of a rigid-flex type including: a first rigid portion coupled to the supporting surface of the first supporting structure and having said inclination with respect to said reference plane; a second rigid portion coupled to the top surface of the substrate and extending parallel to the reference plane; and a flexible portion electrically connecting together the first and the second rigid portions (76a, 76b). - a base substrate; - a covering structure, coupled to the base substrate and forming, with said base substrate, a chamber; - an emitter arranged on said base substrate within said chamber, configured to generate a first radiation; - a first reflector in said chamber, adapted to reflect said first radiation; - a second reflector in said chamber, adapted to reflect said first radiation; - a first window, extending through the covering structure, transparent to said first radiation; - a second window, extending through the covering structure at a distance from said first window, transparent to a second radiation coming from an environment out of said chamber; - a detector arranged on said base substrate within said chamber, configured to sense said second radiation; and - a printed circuit board in the chamber, - said first reflector and said emitter are electrically coupled to the printed circuit board; - the emitter, the first reflector and the second reflector are reciprocally arranged such that the first radiation generated by the emitter is received by the second reflector, reflected towards the first reflector by the second reflector, and reflected towards the first window by the first reflector, thus forming an output of said electronic module (2; 40; 50; 60), - the detector and the second window are reciprocally arranged such that the second radiation passing through the second window is received by the detector, - the base substrate has a top surface parallel to a reference plane, the electronic module further comprising: a first supporting structure, extending in the chamber, having a supporting surface which is inclined with respect to said reference plane; and a second supporting structure, extending in the chamber, having an own supporting surface which is inclined with respect to said reference plane; the first reflector is coupled to the supporting surface of the first supporting structure, and the second reflector is coupled to the supporting surface of the second supporting structure; and - the supporting surfaces (8a, 14a) of the first and second supporting structures (8, 14) face one another so that the radiation generated by the emitter and received by the second reflector is directly reflected to the first reflector by the second reflector, - the printed circuit board is of a rigid-flex type including: a first rigid portion coupled to the supporting surface of the first supporting structure and having said inclination with respect to said reference plane; a second rigid portion coupled to the top surface of the substrate and extending parallel to the reference plane; and a flexible portion electrically connecting together the first and the second rigid portions (76a, 76b).