ISO 8578:2012规定了显微镜物镜和目镜上光学特性数据或符号的标记格式以及数据的定位。它对附加信息的标记提出了建议，特别是指定物镜放大率和使用它们的浸入介质的环的颜色编码。

ISO 8578:2012 specifies the format for the marking of data or symbols for optical characteristics on microscope objectives and eyepieces and the positioning of the data. It makes recommendations for the marking of additional information, particularly colour coding of rings designating the magnification of objectives and the immersion media with which they are used.