DIN EN ISO 13468-1-1997 塑料.透明材料光透射率总量的测定.第1部分:单束光发射仪
Plastics - Determination of the total luminous transmittance of transparent materials - Part 1: Single-beam instrument (ISO 13468-1:1996); German version EN ISO 13468-1:1996
The document covers the determination of the total luminous transmittance, in the visible region of the spectrum, of planar transparent and substantially colourless plastics, using a single-beam photometer with a specified CIE standard light source and photodetector. This part cannot be used for plastics which contain fluorescent materials. This part is applicable to transparent moulding matrials, films and sheets not exceeding 10 mm in thickness.