This European Standard specifies methods of determining the luminous and solar characteristics of glazing in buildings. These characteristic can serve as a basis for lighting, heating and cooling calculations of rooms and permit comparison between different types of glazing. This European Standard applies both to conventional glazing and to absorbing or reflecting solar-control glazing, used as vertical or horizontal glazed apertures. The appropriate formulae for single, double and triple glazing are given. This European Standard is accordingly applicable to all transparent materials except those which show significant transmission in the wavelength region 5 µm to 50 µm of ambient temperature radiation, such as certain plastic materials. Materials with light-scattering properties for incident radiation are dealt with as conventional transparent materials subject to certain conditions (see 5.2). Angular light and solar properties of glass in building are excluded from this Standard. However, research work in this area is summarised in E.1, E.2 and E.3. While this European Standard presents the formulae for the exact calculations of the spectral characteristics of glazing, it does not consider the uncertainty of the measurements necessary to determine the spectral parameters that are used in the calculations. It should be noted that, for simple glazing systems where few measurements are required, the uncertainty of the results will be satisfactory if correct measurements procedures have been followed. When the glazing systems become complex and a large number of measurements are required to determine the spectral parameters, the uncertainty is cumulative with the number of measurements and should be considered in the final results. The term interface used in this European Standard, is considered to be a surface characterized by its transmission and reflections of light intensities.

Test Item 测试名称: EN 410 建筑玻璃 Glass for building

Test Requirements 测试要求：

5.2 Light transmittance 可见光透射比 （波长范围：380-780nm）
5.3 Light reflectance 可见光反射比 （波长范围：380-780nm）
5.4 Total solar energy transmittance 太阳能总透射比
5.4.3 Solar direct transmittance 太阳光直接透射比 （波长范围：300-2500nm）
5.4.4 Solar direct reflectance 太阳光直接反射比 （波长范围：300-2500nm）
5.4.5 Solar direct absorptance 太阳光直接吸收比 （波长范围：300-2500nm）
5.5 UV transmittance 紫外透射比（波长范围：280-380nm）

可见光透射比
可见光反射比
太阳光直接透射比
太阳光直接反射比
太阳光直接吸收比
太阳能总透射比（阳光系数）
遮阳系数
紫外线透射比
显色指数

Sample Size 样品数量 / 送样规格：100 x 100mm x 3pcs
Lead Time / TAT (Turn Around Time) 测试周期: 常规服务 regular service 7 working days

Report Summary 报告摘要: