IEC 62899-402-3:20 21(E)规定了用于获取空隙的二维图像并获得干燥或固化的印刷图案中的空隙相关属性的光学测量方法，所述印刷图案是印刷电子领域中的电子产品的一部分。使用本文件的可测量空隙限于可通过光学图像测量区分的空隙。 笔记？在本文中，空隙是指从二维(2D)俯视图观察到的图案的缺陷。

IEC 62899-402-3:2021(E) specifies the optical measurement method for acquiring two-dimensional images of voids and obtaining the void-related attributes in the dried or cured printed patterns which are part of the electronic products in the field of printed electronics. The measurable voids using this document are limited to those that are distinguishable by the optical image measurement.
NOTE？In this document, void means an imperfection of pattern observed from a two-dimensional (2D) top-view.