Abstract: A method for regulating a supply current of a plurality of first laser diodes of an optoelectronic device during its intended use, including operating the plurality of first laser diodes, which are arranged on a carrier substrate, with the supply current; during operation of the plurality of first laser diodes simultaneously energizing at least one second laser diode, which is identical to the first laser diodes, with a current below a laser threshold of the second laser diode, wherein the at least one second laser diode is thermally coupled to the plurality of first laser diodes via the carrier substrate; determining a voltage (Vf) drop across the at least one second laser diode; and controlling the supply current as a function of the voltage (Vf) drop across the at least one second laser diode.

Abstract: A laboratory mill for comminuting grist, is provided. A device housing has a grinder housing and/or a grinding vessel, and a grinding space therein. A grinder can be arranged in the grinding space, to comminute grist, and the grinder housing or the grinding vessel comprises a user access opening closeable by a grinder housing door or a safety cover having an open and a closed state. A user has access to the grinder through the user access opening, in the open state of the grinder housing door or of the safety cover. A grinder drive drives the grinder. The grinder housing door or the safety cover comprises a closure element, lockable in the closed state. The laboratory mill comprises a mechanical grinder drive locking mechanism.

Abstract: The invention relates to a laboratory mill (1) for comminuting grist, in particular configured as a cutting mill or cross beater mill, comprising a device housing (12) having a grinder housing (16), wherein the grinder housing (16) defines a grinding chamber (32) and has an axial end face (16a), a rotor-grinder in the grinding chamber (32) of the grinder housing (16), wherein the rotor-grinder (30) comprises a rotor (34), which defines a rotor axis (X), and at least one counter-element (36), wherein the grist is comminuted between the rotor (34) and the at least one counter-element (36) when the rotor (34) rotates, a grinder drive (2, 4) for driving the rotor (34) in the grinding chamber (32), a grinder housing door (18) for closing the grinder housing (16) at the axial end face (16a) wherein the at least one counter-element can be inserted axially into the grinder housing (36) when the grinder housing door (18) is open.

Abstract: A device for producing a spring wire includes a wire production apparatus which is designed such that a spring wire can be produced from a raw material, in particular by drawing; a checking unit which is designed such that the spring wire can be checked for flaws, in particular material flaws and surface flaws; and a laser marking unit which is designed such that defective regions of the spring wire, in particular regions of the spring wire having material and surface flaws, can be marked with a laser marking such that part of the surface of the spring wire can be removed or part of the surface of the spring wire can be tempered in such a manner that the color of the surface of the spring wire is changed in this part. The wire production apparatus is designed such that the spring wire can be guided past the checking unit and past the laser marking unit.