Ian Ashdown, P. Eng., FIES, Senior Scientist,
SunTracker Technologies Ltd.
Published: 2013/10/08
Topic: Understanding Mesopic Photometry
If you are involved with outdoor area or roadway lighting design, you will undoubtedly encounter such terms as mesopic multipliers, scotopic lumens, and S/P ratios, and you will sooner or later need to consider mesopic photometry in your design efforts. For example, you may encounter a government specification that states, “Luminaires must have a minimum S/P ratio of x.” What does this mean and, equally important, where can you find this information?
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Topic: Understanding Mesopic Photometry
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