为了降低透镜复杂性和/或容差敏感性,许多红外透镜现在都已采用衍射光学元件(DOE)。在许多情况下,衍射表面都包括一个非球面,这样可以进一步校正像差。对于像多视和红外变焦透镜这样的复杂透镜系统来说,人们是很希望采用多个衍射光学元件的。本文对在红外透镜中采用多个衍射光学元件的性能效果及可生产性优点进行了评述。 Many infrared lenses now use diffractive optical elements (DOEs) to reduce lens complexity and / or tolerance sensitivity. In many cases, the diffractive surface includes an aspheric surface, which further corrects the aberrations. For complex lens systems such as multi-view and infrared zoom lenses, it is highly desirable to employ multiple diffractive optical elements. This article reviews the performance and manufacturability advantages of using multiple diffractive optical elements in infrared lenses.