西班牙德瓦林西亚大学 ,乔姆 大学和埃尔兰根 -纽伦堡大学的研究人员制造了全非相干光学相关器 ,可产生出点离散函数 (PSF) ,其标度与大部分可见光光谱的波长无关。这样就允许人们用白光执行许多彩色光学操作。混合衍射折射成像系统包括两个用半色掩模技术制成的连续浮雕衍射 Researchers at the University of Drava Linas, Universidad Choms and Erlangen-Nuremberg, Spain, have created total incoherent optical correlators that produce a point-discrete function (PSF) with a scale that is independent of the wavelength of most visible light spectra . This allows one to perform many colored optical operations with white light. The hybrid diffractive refractive imaging system consists of two continuous relief diffractometers made with half-tone mask technology