Engineers, technicians, and students at technical colleges will find a wide range of information here for training and practice that goes beyond the basics of technical optics. The focus is on optical components, including radiation sources up to lasers, receivers, and their measurement technology. Topics include light, light propagation, and optical imaging; imaging devices; bundle limiting; radiation, light, sources, and receivers; fiber optics and other devices; optical instruments; interference and spectral devices, colors, gratings, and holography; polarization; measurement of optical parameters; and a collection of formulas and DIN standards.