Dr. Gerhard Kloos is a physicist working in optical engineering. He received his Ph.D. from Eindhoven University of Technology in the Netherlands. He published more than 30 papers on materials science and on optical technology. The publications on materials science cover electromechanical effects, magnetic properties, polymer physics, and photoelasticity. His interest in optical design is reflected by the books Matrix Methods for Optical Layout (SPIE Tutorial Text in Optical Engineering) and Entwurf und Auslegung optischer Reflektoren (Layout and Design of Optical Reflectors) published in German language and by patents in the field of optical technology.