Neil, M. A. A., Squire, A., Juskaitis, R., Bastiaens, P. I. H. and Wilson, T.
Wide-field optically sectioning fluorescence microscopy with laser illumination. Journal of Microscopy 197: 1-4 (2000).

We describe an extremely simple method by which optically sectioned fluorescence images may be obtained with conventional microscopes using laser illumination. A one-dimensional grid pattern is introduced into the illumination system, together with a rotating ground glass diffuser. This causes an image of the grid pattern to be projected into the specimen. Images taken at three spatial positions of the grid are processed in a simple manner to provide optically sectioned images of fluorescent specimens.