全息光学元件是利用全息摄影技术制做的薄膜型光学元件。它可以象透鏡、棱鏡等普通光学元件那样,实现光束的会聚、发散、偏转、分束等功能。全息光学元件重量轻、成本低、制造容易、性能可靠,在一些应用领域显示出独特的优点,因而已经引起人们的广泛重视。全息反射片已在多种军用光学系统中应用,并取得良好成效。美国休斯飞机公司、英 Holographic optical elements are thin-film type optical elements made by using hologram technology. It can be as lenses, prisms and other common optical components, as the beam convergence, divergence, deflection, beam splitting and other functions. Holographic optical elements have attracted a great deal of attention due to their light weight, low cost, ease of manufacture, and their reliable performance, which have shown unique advantages in some fields of application. Holographic reflector has been used in a variety of military optical systems, and achieved good results. Hughes Aircraft Company, UK