HPG-1800 goniophotometer (single arm) used for testing the spatial photometric distribution (i.e. light distribution curve) of LED lamps (semiconductor lighting), road lamps, floodlights, indoor lamps, outdoor lamps, also energy-saving lamps, fluorescent lamps, incandescent lamps, HID lamps..etc.
According to the requirements of measuring lamps, the system can measure in plane coordinate systems such as B-β, A-α or C-γ. According to different measurement coordinate systems, the system can adopt two structural forms:
1、Double column structure 2、Single column structure

