Vorrichtung und Verfahren zur Abstands- und/oder Glanzgradmessung

NOVELTY - An optical system (5) directs a first light beam (B1) from a first direction onto a region of the surface (A) and receives it again. The optical system directs a second light beam (B2) from a second direction to the same region of the surface, and receives it again. The device superimposes both received light beams or their derived signals, mirror inverted with respect to each other in at least one direction. USE - For measuring three-dimensional profiles of glass panes for windows for motor vehicles, high speed rail vehicles or aircraft. ADVANTAGE - Precise and reliable measurement of reflective surfaces.