Color Rendering: Asking the Question
Color Rendering: Asking the Question
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DOI：
10.1002/col.10193
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发表时间：
2003-12
影响因子：
1.4
通讯作者：
J. A. Worthey
中科院分区：
文献类型：
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作者：
J. A. Worthey
两个白色灯可能具有相同的色度，但是当用于照亮一组物体时，它们显示颜色的能力可能不同。例如，任何白色光都可以通过两种窄带光（黄色加蓝色）的混合来匹配。在这种极端的情况下，红色和绿色变成黑色或棕色，红色和绿色的维度消失了。在另一个极端，相对于宽带光（如日光），具有三个窄带的光在适当的波长下可以使红色和绿色变亮，并增加红绿对比度。相对于宽带光源，许多商业光源倾向于暗淡的红色和绿色，这是显色性是一个实际问题的核心原因。一个很好的例子是钕玻璃，这是一种吸收黄色的滤光片，有时用于改善显色性。本文试图通过详细的图形示例将这些想法变为现实。
Two white lights may have the same chromaticity, and yet when used to light an array of objects may differ in their ability to reveal colors. For example, any white light can be matched by a mixture of two narrow-band lights, a yellow plus a blue. In this extreme case, reds and greens become black or brown and the red-green dimension is lost. At the other extreme, a light with three narrow bands, at the proper wavelengths, can brighten reds and greens and increase redgreen contrast, relative to a broad-band light such as daylight. Many commercial lights tend to dull reds and greens, relative to broad-band sources, a central reason that color rendering is a practical concern. A telling example is neodymium glass, a yellow-absorbing filter that is sometimes used to improve color rendering. This article seeks to bring these ideas to life through detailed graphical examples.