1.1 本试验方法规定了表征VDU颜色和亮度所需的仪器测量。 1.2 该测试方法在范围上是特定的，而不是一般的仪器和物体类型。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 获取CIE三刺激值或其他颜色坐标以描述视觉显示单元（VDU）颜色的最基本方法是使用光谱辐射数据。（见CIE第18和63号。）这些数据与代表1931 CIE标准观测器的数值相加使用，并归一化为 K m ，最大光谱发光效率函数。 5.2 提出并讨论了表征具有窄谱或不连续谱的VDU的特殊要求。对实践要求的修改 E308年 用于纠正窄源或不连续源的异常性质。

1.1 This test method prescribes the instrumental measurements required for characterizing the color and brightness of VDUs. 1.2 This test method is specific in scope rather than general as to type of instrument and object. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The most fundamental method for obtaining CIE tristimulus values or other color coordinates for describing the colors of visual display units (VDUs) is by the use of spectroradiometric data. (See CIE No. 18 and 63.) These data are used by summation together with numerical values representing the 1931 CIE Standard Observer and normalized to K m , the maximum spectral luminous efficacy function. 5.2 The special requirements for characterizing VDUs possessing narrow or discontinuous spectra are presented and discussed. Modifications to the requirements of Practice E308 are given to correct for the unusual nature of narrow or discontinuous sources.