Applicability of DIN 5036-3 to Transmittance Haze Measurement

Abstract This paper evaluates the applicability of the method described in DIN 5036-3 for transmittance haze measurement, theoretically and experimentally. It is shown that DIN 5036-3 is valid for total transmittance measurement. However, when applying to diffuse transmittance measurement, the measured value is lower than the theoretical one, resulting a lower value of calculated transmittance haze. The reflectance of the integrating sphere and collimation of the incident beam are the keys to achieve better agreement between theory and experiment. Further study is necessary to recommend solutions for the discovered issues.