Ariel Lipson is Senior Physicist at BrightView Systems Ltd, Israel. He has contributed to three successful start-up companies in optics, which have influenced several of the topics discussed in this book. Stephen G. Lipson is Professor of Physics and Electro-optics in the Physics Department of the Technion - Israel Institute of Technology, Israel. He holds the El-Op Chair of Electro-Optics at Technion where he has taught courses in optics both at elementary and advanced levels. Henry Lipson was Professor of Physics at the University of Manchester Institute of Science and Technology, UK. He was a pioneer in the development of optical Fourier transform methods for solving problems in X-ray crystallography.