Shadow zone lighting device for commercial or publicity purpose, has mirror actuated by two motors controlled by vertical and horizontal sensors, each sensor including photo electric cells positioning mirror according to solar rays

摘要

The device has a photo voltaic cell (9), and a mirror (1) actuated by two motors (2) whose functions are controlled by vertical and horizontal sensors (4, 5). Each sensor has an optical system made of photo electric cells lit by a Plexiglas (RTM) bar trimmed on back of a prism sequence protected from interfering rays by a narrow case. The photo electric cells receiving solar rays position the mirror according to the rays.