Latest Publications

This Draft International Standard defines spectral sensitivity functions, quantities and metrics to describe radiation for its ability to stimulate each of the five photoreceptor types that can contribute, via the melanopsin-containing intrinsically-photosensitive retinal ganglion cells (ipRGCs),... more
The objective of this report is to lay the groundwork for developing a recommendation on the measurement of effective intensity of flashing lights used for signalling applications. It recommends a convolutional method that will rest on some defined visual impulse response function to calculate the... more
  In April 2018 the CIE 2018 Topical Conference on Smart Lighting took place in Taipei, Chinese Taipei. The CIE Topical Conference series is the successor to the CIE Lighting Quality and Energy Efficiency Conference series, which ran from 2010 to 2016. This first conference focused on Smart... more
Contemporary colour media, to which a self-luminous grey (or more generally, neutral) scale would apply, include light emitting diode (LED) displays and liquid crystal displays (LCD). Every colour-difference calculation has a neutral or achromatic component. In stand-alone mode, this neutral scale... more

Latest News and Events

Information on the 29th Session of the CIE available at  CIE 2019 Washington, Conference Registration...
Two new CIE TCs have been approved within Division 2. These are: TC 2-90  LED Reference Spectrum for...
The CIE has established a new way of engaging on scientific and technical topics that might have...
At the Midterm Meeting of the CIE General Assembly Dr Peter Blattner was elected to the position of...