HPG2000 is Goniophotometer, a moving mirror Goniophotometer recommended by the International Commission on Illumination CIE70 document. 

Moving Detector Goniophotometer (Mirror Type C)

The reflector that moves in a circular motion around the center of the test lamp reflects the light beam in the measuring direction of the lamp to the photometric detector to realize the measurement of the light intensity distribution curve on different planes. This system complies with the relevant international and domestic standards such as the American Energy Star IES LM79 standard, the European standard EN13032, the first requirement of GB/T9468 lighting distribution photometric test.

Measurement:
Luminous Intensity Data, Photometric 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 Luminaires VS Lighting Area, Isocandela Diagrams, Efficient Luminescence Angle, EEI, UGR, etc.