This textbook provides an accessible introduction to the fundamentals of geometric and physical optics as they relate to practical problems encountered by engineers and researchers in designing and analyzing optical systems. In this updated edition, the author focuses on topics that are critical to understanding how the basic principles of optics affect design decisions. In addition to information on breadboarding experiments and prototypes, the new edition also expands its coverage of holography and discusses important state-of-the-art issues in modern optics.