Abstract: The invention relates to a device (100) for detecting the position of a laser beam (15) with a predetermined diameter and emitted by a laser of an additive manufacturing machine, said detection device (100) comprising an upper portion (102) comprising a scanning zone (108) of the laser beam (15), said scanning zone (108) comprising, at the centre thereof, a circular hole (111) with a diameter substantially equal to the diameter of the laser beam and with a predetermined position; the detection device (100) comprising a lower portion (103), the lower portion (103) comprising at least one sensor (114) for collecting a portion of the energy transmitted by the laser beam (15); so that when the laser beam (15) scans the scanning zone (108) from a plurality of positions, the sensor (114) collects a portion of the energy transmitted by the laser beam from each position, the portion of the transmitted energy being maximum when the laser beam (15) is aligned with the circular hole (111).

Abstract: Analysis system (310) for a powder jet of an additive manufacturing machine, said powder jet (21) comprising powder and gas, said analysis system (310) comprising a separation device (312), said separation device (312) comprising: —a separator element (326, 327) comprising a circular side wall (328) defining a cylinder and at least one separation wall (330) suitable for separating the inner volume of said separator element (326, 327) into n equal portions that are symmetric with respect to the axis of symmetry of the cylinder, said separator element (326, 327) being suitable for receiving an initial powder jet (21) at the centre of said separator element (326, 327), on said at least one separation wall (330), in order to separate the initial powder jet (21) into n powder jet portions; and —means for detecting the quantity of powder in each powder jet portion.

Abstract: A device for analyzing the distribution of energy within a power laser beam includes a thermoelectric receiver (1) directly exposed to the laser beam (2) and delivering electrical signals to an intermediate demultiplexer and amplifier device. The device operates in continuous mode and in impulse mode, the thermoelectric receiver being constituted by a sealed body (5) whose surface turned toward the source of the laser beam is metallic and constitutes, in cooperation with metallic wires (7), the support of the thermocouples. The wires (7) pass in sealed manner through the surface (8) of the body (5) opposite the surface turned toward the source of the laser beam (2), and the body (5) is provided moreover with two openings (9) for circulation of a cooling fluid.