BS EN 62788-1-4:2016 光伏模组使用材料的测量程序. 封装材料. 光透射率的测量和太阳能加权光子透射率, 泛黄指数和UV截止波长的计算
Measurement procedures for materials used in photovoltaic modules. Encapsulants. Measurement of optical transmittance and calculation of the solar-weighted photon transmittance, yellowness index, and UV cut-off wavelength