This paper describes the development of an automated equipment of Geometric Optics covering demonstrations of convergence and divergence of light rays by lenses and mirrors. The equipment was developed for the Museum of Science and Technology of Londrina (MCTL), standing under the informal education in designed environments. The work is part of a broader project of installation of interactive experiments in Optics as well as research on teaching this content in basic education in MCTL. The equipment, easy to construct, could also be used for classroom demonstrations. [ABSTRACT FROM AUTHOR]