本报告详细研究了适用于辐射测量、光度测量和分光光度测量中遇到的光谱的带宽校正。文中详细讨论了扫描光谱仪和阵列光谱仪记录的数据因带通函数效应而变宽的机理，并对目前使用的方法进行了历史研究。该报告介绍了一种可用于任何实际带通函数的带宽校正算法，并提供了如何应用该校正的逐步指南，以及对其适用性的理论和实验限制的讨论。讨论了噪声和测量间隔对光谱和带通函数测量的影响，提出了识别校正光谱中噪声影响重要性的方法。 在计算光谱积分量（例如光度或色度值）时，还检查了噪声的降低效果。为带宽校正的应用提供了实用指南，用于确定带通函数和估计校正是否会导致光谱精度的提高。该出版物以英文写成，并附有法文和德文的简短摘要。

This report presents a detailed study of bandwidth correction applied to spectra encountered in radiometric, photometric and spectrophotometric measurements. The mechanism of broadening of data recorded by both scanning and array spectrometers, due to bandpass function effects, is discussed in detail, along with an historical study of methods currently applied. The report presents a bandwidth correction algorithm that can be used for any real bandpass function and provides both a step-by-step guide on how to apply that correction, and a discussion of the theoretical and experimental limits to its applicability.The effect of noise and measurement interval in measurement of both the spectrum and the bandpass function is discussed and methods for identifying the significance of noise effects in the corrected spectrum are presented. The reduced effect of noise when calculating spectrally integrated quantities (such as photometric or colorimetric values) is also examined. Practical guidelines are given for the application of bandwidth correction, both for the determination of the bandpass function and for estimating whether the correction may lead to an improvement in spectral accuracy.The publication is written in English, with a short summary in French and German.