What is a MacAdam Ellipse?

This is an elliptical region on the CIE chromaticity diagram that contains all the colours that are indistinguishable to the average human eye, from the colour at the centre of the ellipse. Adjacent ellipses are “just distinguishable” in terms of colour. This are used to refine the binning process of LED colours. Slight colour differences in the appearance are measured in MacAdam ellipses or steps.




Smart Buildings

19.10.2016, Birmingham NEC

Presentation: ‘Connected Lighting for Offices - Beyond Illumination’ by Darren Smith

Grand Designs Live

Find us on Stand L190, Technology Zone,
Hall 5

19-23.10.2016, Birmingham NEC

Highway Electrical Association (HEA)
Annual Conference
03.11.2016, Celtic Manor, Newport


9-10.11.2016, Canary Wharf, London

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