ABSTRACT
When this book was first written, the question of the title arose. Optical Thin Films was the obvious choice, but the publisher feared that it might then be confused with some other existing titles, and so, eventually to avoid confusion, Thin-Film Optical Filters was chosen and has remained the name through four editions and, now, into a fifth. It was never intended that the subject should be limited to the narrow designation of filters but should encompass as much of the field of optical thin films as possible. This is still the intention, but in a work of this size, it is not possible to cover the entire field of thin-film optical devices in the detail that some of them may deserve. The selection of topics is due, at least in part, to the author’s own preferences and knowledge.
