采用衍射光学元件除了能减小成像系统的体积和重量外 ，还具有许多传统光学元件无法比拟的优越性 ，如消色差和热补偿功能等。
The diffractive optical elements(DOEs) used in imaging systems has many advantages, such as achromatization and thermal compensation besides the features of saving in mass and volume.
根据菲涅耳衍射理论，采用微光学元件制作技术，通过三次套刻制作出八位相台阶的二元离轴菲涅耳透镜。
A binary Fresnel lens with 8 phase steps can be manufactured with micro-optical element fabricating technology and three times of alignment according to Fresnel diffraction theory.
为了获取长距离超细激光束，采用几何能量守恒法设计出一种衍射光学元件，推导出高斯光入射时衍射光学元件位相函数。
The geometric law of energy conservation is utilized in designing diffraction optical component and evaluating the phase function of diffraction optical component with Gauss beams input.
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