Crespo Vázquez, DanielAlonso Fernández, JoséBernabeu Martínez, Eusebio2023-06-202023-06-202002-03-011559-128X10.1364/AO.41.001223https://hdl.handle.net/20.500.14352/59217© Optical Society of America. This study has been supported by the research project from the Comisión Interministerial de Ciencia y Tecnologí (CICYT) with reference TAP 98-0862. D. Crespo performed this research while he was in the fellowship program Formación de Profesorado Universitario (FPU) of the Ministerio de Educación y Ciencia.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.engjournal articlehttp://dx.doi.org/10.1364/AO.41.001223http://www.opticsinfobase.orgopen access535LauDiffractionÓptica (Física)2209.19 Óptica Física