We describe a simple method by which optically sectioned images may be obtained. The system geometry is similar to that of a tandem scanning microscope but a one-dimensional grid pattern is used rather than an array of pinholes. This produces a composite image consisting of an optically sectioned image superimposed on a conventional image. A blank sector on the disc is used to provide a wide-field image. Image subtraction yields the optically sectioned image in real time.