LSG-2000 Goniophotometer with Rotating Mirror (Moving Mirror Goniophotometer) completely meet LM-79 Clause 9.3.1. The LSG-2000 is an automatic light distribution intensity 3D curve testing system. The measuring distance is from 5m to 30m. It can measure all types of lighting sources, LED or HID luminaires such as indoor and outdoor luminaires, roadway luminaires, street lamps, flood lights and other kinds of luminaires.