LM-79 Moving Detector Type C Goniophotometer LSG-1900 Moving Detector Type C Goniophotometer completely meets LM-79 Clause 9.3.1 requirement. The LSG-1900 is an automatic light distribution intensity 3D curve testing system for measuring light. The measuring distance is from 5m to 30m. It can measure all types of lighting sources,Website:http://www.lisungroup-sh.com, LED or HID luminaries such as indoor and outdoor luminaries, roadway luminaries, street lamps, flood lights and other kinds of luminaries.     Measurement:Luminous Intensity Data, Luminous Intensity Distribution, Zonal Luminous Flux, Luminaries Efficiency, Luminance Distribution, Coefficient Of Utilization, Luminance Limitation Curves Glare, Maximum Ratio of Distance to Height, Equal Illuminance Diagrams, Curves of Luminaries VS Lighting Area, Lsocandela Diagrams, Efficient Luminescence Angle, etc.Features:•  Many national patents pending on hardware and software.•  The Mirror 1 and Mirror 2 move synchronizing and the detector is fixed. •  The luminaries will be keep the burning position without moving at all, and  the detector will always sense the light directly from the luminaries.•  CIE Class A