全息光学元件是一种有别于经典光学元件(反射或折射型)的衍射光学元件[1,2].由于它是薄膜型光学元件,因此有重量轻、性能可靠、制造方便、成本低等特点.它特别适用于“准单色光系统”和激光系统.如果全息光学元件与经典光学元件相结合,还能扩展和改善光学系统的性能和应用范围. A holographic optical element is a diffractive optical element different from a classical optical element (reflection or refraction type) [1,2]. Since it is a thin-film type optical element, it is lightweight, reliable, easy to manufacture, and low in cost It is especially suited for “quasi-monochromatic systems” and laser systems, which can extend and improve the performance and range of optical systems if holographic optics are combined with classic optics.