The effect is similar to that of the well-known "magic ink: Inks, varnishes, chalks and adhesives enriched with luminescent substances, so-called luminophores, are invisible to the human eye. For the evaluation of luminescent markings, the same comprehensive detection tools are available to the user as are offered by the classic illumination variants (white, red, infrared) of the Visor Allround series. This offers application possibilities in the areas of object detection, surveying, robotics and code reading.