This book provides comprehensive insights into the field of optics. It provides detailed information about the various advancements within this field. Optics is the study of light. It concerns itself with the examination of the properties, behaviour, ultraviolet, infrared and visible lights. It is used in many fields like photography, astronomy, optometry, opthalmology and many other engineering fields. The aim of this textbook is to provide thorough insights to readers about this subject. Most of the topics introduced in it cover new techniques and the applications of optics. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.