Springer, 2008, 161 p., ISBN: 978-3-540-71926-7. In this book we give a view of optical measurement techniques, from the perspective of the authors of this book, especially on applications in industry and life sciences. We are aware about the vast field of the topic. Therefore, we have not intended to cover all possible topics but focus on the following themes, which are applied optical spectroscopy, machine vision, laser velocimetry and measurement of surface quality, position, distance, and displacement.