Compared with other interference measurements, the method is cheaper, simpler and more flexible.Particularly it may do well in measuring the shape of aspheric reflector and sharp variant reflector.

• 与传统的干涉计量相比较，这种方法具有结构简单、成本低和灵活性高等优点，特别适用于非球面反射镜和波前变化范围较大的反射镜面形测量。