Lensless Slide Projection: A Demonstrative Experience
arXiv:physics/0606238
Abstract
A 2D transparency may be projected on a diffractive screen by just illuminating it with a filament lamp of the same height. Sharpness of the filament width is naturally related to sharpness on the image, but some peculiar properties makes this experience to be different from a shadow projection case.
5 pages, 2 figures, V simposio estadual de lasers e aplicacoes, Sao paulo - Brasil 26-29 Oct.1992