A textbook for elementary optical design that treats lasers, modulators, and scanners as part of the design process. Moves from the simplest concepts in optics to a basic understanding of ray tracing in optical systems, the components of those systems, and the process by which a design is produced. Features numerous problems, examples, and figures. A textbook for elementary optical design that treats lasers, modulators, and scanners as part of the design process. Moves from the simplest concepts in optics to a basic understanding of ray tracing in optical systems, the components of those systems, and the process by which a design is produced. Features numerous problems, examples, and figures. Donald C. O'Shea is the author of Elements of Modern Optical Design, published by Wiley.