<div> Optical thin film coatings improve the performance of optical systems and most modern optical systems could not function without them. Examples of these coatings are mirrors, anti-reflection coatings, beamsplitters, and filters. They are used in a diverse range of applications including telecommunications, displays and lighting, architectural glass and automotive glass. Expert contributors introduce the design and manufacturing of optical thin film coatings, cover characterization and modeling of optical thin film coatings, look at novel materials for optical thin film coatings and provide extensive coverage of applications of optical thin film coatings.</div>