2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114460A 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.1992Opticstext