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LED photometric calibrations at the National Institute of Standards and Technology and future measurement needs of LEDs

机译：美国国家标准技术研究院的LED光度校准以及LED的未来测量需求

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摘要

Various new light-emitting diodes (LEDs) including white LEDs are being actively developed for solid-state lighting and many other applications, and there are great needs for accurate measurement of various optical quantities of LEDs. Traditional lamp standards do not suffice for specific measurement needs for LEDs. The National Institute of Standards and Technology (NIST) has recently established calibration services for photometric quantities (luminous intensity and luminous flux) of LEDs, but the measurement needs are expanding. This paper covers the current capabilities and services NIST provides for calibration of LEDs and discusses the future needs for optical metrology of LEDs. Work is just completed at NIST to provide official color calibrations of LEDs (chromaticity coordinates, peak wavelength, correlated color temperature, etc.). Another urgent need addressed is radiometric calibration of LEDs, particularly the total radiant flux (watt) of ultraviolet (UV) LEDs used to excite phosphors for white LEDs. Also, as spectroradiometers coupled with an integrating sphere are increasingly used total spectral radiant flux standards from NIST are in urgent demand. Presented is the scope of NIST plans to realize these new radiometric calibration capabilities for LEDs in the near future.
机译：包括白光LED在内的各种新型发光二极管（LED）正在积极开发中，以用于固态照明和许多其他应用，并且非常需要精确测量LED的各种光量。传统的灯标准不足以满足LED的特定测量需求。美国国家标准技术研究院（NIST）最近已为LED的光度数量（光强度和光通量）建立了校准服务，但测量需求正在不断扩大。本文介绍了NIST为LED校准提供的当前功能和服务，并讨论了LED光学计量的未来需求。 NIST刚刚完成了为LED提供官方色彩校准的工作（色度坐标，峰值波长，相关色温等）。解决的另一个紧急需求是LED的辐射度校准，尤其是用于激发白色LED的磷光体的紫外线（UV）LED的总辐射通量（瓦）。而且，随着结合积分球的光谱辐射仪的使用越来越多，迫切需要NIST的总光谱辐射通量标准。 NIST计划的范围是在不久的将来实现这些新的LED辐射校准功能。

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