The diffractive top-hat beam shapers are diffractive phase optical elements used to transform a near-gaussian incident laser beam into a uniform-intensity spot of either round or rectangular shape with sharp edges. Applications include laser heat treatment, annealing of surfaces in machinery and microelectronics, optical heads of laser writers and optical information processing.

此系列的光斑整形镜用于将高斯光斑或近高斯光斑整形成功率分布均匀的任意形状（圆形、矩形或其他形状）的光斑。