The term generalized grating imaging is used to describe the process of image formation of a grating using only another grating as imaging system. The moiré and the Lau effects could be regarded as particular cases of such a process. Here we deal with the less-studied case of images formed at finite distances from the gratings, using an extended monochromatic light source. Some experimental results are shown for the images obtained in this last case, and they are compared with theoretical predictions.
© 2002 Optical Society of America
(050.1960) Diffraction and gratings : Diffraction theory
(050.2770) Diffraction and gratings : Gratings
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects
(110.0110) Imaging systems : Imaging systems
Daniel Crespo, José Alonso, and Eusebio Bernabeu, "Experimental measurements of generalized grating images," Appl. Opt. 41, 1223-1228 (2002)