The lighting industry has gone through a rapid transition over the past ten years with the commercial success of LED lighting. This boom in LED lighting has been fueled by a trifecta of clean energy legislation, increased luminous flux, and decreased costs. The data in figure 1 shows that LED illumination has finally reached the point where it is both as bright and as cost-effective as traditional incandescent sources. As of 2019, the global LED light market was valued at 54 billion USD, according to Grand View Research, with a projected compound annual growth rate of 13.4% .
As LEDs rapidly replace traditional lighting and displays, in residential, commercial, and industrial applications, the demand for high-quality repeatable test and measurement systems has also increased. In this application note, we will explore the fundamentals of LED lighting technology and discuss best practices for Spectroradiometric testing, including luminosity and colorimetry. Since we have already published previous application notes on the “The Fundamentals of Colorimetry” and “Radiometry,” we will not be reviewing either of these topics in detail.
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