Abstract
The article is a dedicated review of recommendations, methods, and tools for establishing and communicating the standard measurements of photometric, energy, and photon value units. The article considers how photometric values units are reproduced and traced through to the basic units of the International System of Units (SI), as well as how methods and tools of transposing standard measures from primary standards to measuring devices in test centres and laboratories. Modern day measurement requirements for test methods and facilities for illumination devices used in different illumination systems are also considered.
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