IEC 62595-2-1:20 16（E）规定了确定液晶显示器用LED背光单元的电学和光学参数的标准测量条件和测量方法。 本第一版取消并取代了2012年发布的IEC 62595-2第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: a)更改系列标题以涵盖前灯单元； b)添加了详细的测量过程，特别是针对分块BLU； c)删除附件A； d)修订了图1和图2以及一些编辑错误。

IEC 62595-2-1:2016(E) specifies the standard measurement conditions and measuring methods for determining the electrical and optical parameters of LED backlight units for liquid crystal displays. This first edition cancels and replaces the first edition of IEC 62595-2 published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) changed the series title in order to cover frontlight unit;
b) added the detailed measurement procedures particularly for block-wise BLU;
c) deleted Annex A;
d) revised Figure 1 and Figure 2 and some editorial errors.