The author describes how his interest in form and light relates to mathematics. His use of a modest optical computer, based on the Fourier transform system, to construct images for films and two- and three-dimensional artworks is discussed. Studies in the mechanics of visual perception, of optics and of certain mathematical models and ideas have influenced his artistic experiments. He uses lasers and image-processing techniques to visualize some physical and mental phenomena—turbulence on soap film, topological transformations, chaos and dreams. In these, mathematical and aesthetic criteria have been of equal importance in his choice of tools, techniques and images.