RAY METRIX OPTICS AND SINGLE, DOUbLE GRATINGS IMAGING
矩阵光学与单双光栅成象研究

In this paper we combine ray metrix optics and the diffraction condition ot tne grating, the double gratings imaging formulae is derived. The single gratings imaging phenomenon are regarded as the results of imaging shifting and overlaping. The details of this analysis are presented along with the experimenal results which shown that the double gratings imaging are 1) the first grating imaging through combined imaging system formed by the second grating and the lens 2) the self-imaging of the second grating illuminated by the encorded source formed by the first grating.