Measurement & Simulation

Technologies | Measurement | Jun 18, 2014
How Much Can the Color of Nominal CCT Vary?
How Much Can the Color of Nominal CCT Vary? The threshold at which a color difference becomes perceptible is defined by a MacAdam ellipse. A MacAdam ellipse is drawn over the color space in such a way that the color at its center point deviates by a certain amount from colors at any point along its edge. The scale of a MacAdam ellipse is determined by the standard deviation of color matching (SDCM). A color difference of 1 SDCM “step” is not visible; 2 to 4 steps is barely visible; and 5 or more steps is readily noticeable. Read more »
Technologies | Simulation Tools | Jun 21, 2017
Future Lighting Solutions Launches the Usable Light Tool for UV and Horticulture Applications
Future Lighting Solutions Launches the Usable Light Tool for UV and Horticulture Applications Future Lighting Solutions, the world-class leader and innovator in demand creation, marketing and distribution of solid-state lighting technologies, announces the inclusion of non-visible LEDs and horticultural LEDs to its Usable Light Tool (ULT). Available free of charge to engineers worldwide, the ULT enables lighting designers to simulate usable light from LEDs, allowing the user to make critical LED selection decisions. Read more »
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