<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type> This textbook is intended for students in their third or fourth semester of engineering studies at universities of applied technology. It covers the fundamental principles of light and its manipulation (e.g. geometrical optics, wave optics, refraction, and reflection) as well as optical components and devices. There are numerous practice exercises with solutions.