... measuring photometric parameters of lumin LSG-1600 Type C Goniophotometer is an automatic goniophotometric measurement system for ... distribution curve, luminance limitation curve, luminaire efficiency, glare grade, effective beam angle, upward luminous flux ratio, downward ... total luminous flux, effective luminous flux, utilization factor.Features:• C-γ test Meets the requirements of CIE, IEC, IES & ...