Using integrating spheres correctly to measure LEDs

LEDs have opened up new dimensions of design freedom, allowing architects and designers to give free rein to their creativity. Light-emitting diodes permit manifold design solutions as a light source in illumination products. However, a suitable measuring method for comparing key technical data is required in order to get the best out of the diversity [...]

MacAdam ellipses and determination of tolerance and chromaticity changes of light emitted by lamps

A MacAdam ellipsis is a region on a chromaticity diagram which contains all colors which are indistinguishable to the average human eye from the color at the center of the ellipse. The contours of the ellipse represent the just noticeable differences of chromaticity. MacAdam ellipses help to show differences of chromaticity between two light sources [...]

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