Fibre exit element

A fiber exit element

• having a plurality of glass fibers each having at least one core, each of which is designed to guide a signal light beam, and
• having at least one optical element, an optical lens, an optical beam splitter or an optical prism, which is connected at an entry surface to an open end of each of the cores of the glass fibers, preferably further to an open end of a cladding of the glass fibers substantially enclosing the core, and is designed to receive the signal light beam from the open ends of the cores of the glass fibers and to emit same outwards in the form of exit beams via at least one exit surface,
• characterized by
• at least one first housing which is connected to the optical element and, together with the optical element, forms a first housing space which at least substantially encloses at least the entry surface of the optical element with the open ends of the cores of the glass fibers,
• wherein the first housing has a first housing shell which extends at least substantially, parallel to the glass fibers and is designed to be optically transparent and/or optically absorbent at least in sections, and
• wherein the first housing has a fiber feedthrough element through which the glass fiber extends, preferably vertically, in a loosely guided or fixedly connected manner, and at least sections of which are designed to be optically reflective and/or optically absorbent,
• wherein preferably the first housing shell and/or the fiber feedthrough element comprises/comprise a material with a comparatively low thermal expansion, and preferably consists/consist thereof.