Mirror galvanometer-based laser projector

Abstract

This paper describes design and construction of a laser projector. Laser projectors are perfect for displaying graphics that need to catch our attention. In this paper we present the novel approach to animation which can later displayed by the self-made laser projector. The laser projector presented in paper is composed of galvanometer mirrors, green laser, microcontroller and a dedicated software running on it. Galvanometer mirrors are responsible for reflecting the incoming green laser beam in a precise way that will project a picture on the screen. The microcontroller synchronizes mirror movements with signals from its built-in digital-to-analogue converter. Additionally, it reads and processes a file containing picture that will be shown.