The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.

To search for another term please use  "Back to the list" to return to the main page or the e-ILV.

For the complete set of terms and definitions CIE S 017:2020 can be purchased from the CIE Webshop. Members of a CIE National Committee or Associate National Committee have access to a 66,7 % discount on the purchase price of the standard.


blue light hazard radiant exposure


effective radiant exposure with the spectral radiant exposure, Hλ, spectrally weighted with the blue light hazard spectral weighting function, B(λ)

Note 1 to entry: The wavelength range for the blue light hazard radiant exposure is specified in ICNIRP-recommendations as λ = 300 nm to λ = 700 nm.

Note 2 to entry: This definition is based on the assumption that an action spectrum is adopted for the actinic effect considered, and that its maximum value is 1.

Note 3 to entry: It is essential to specify which actinic action spectrum is used, as the unit is the same for any action spectrum.

Note 4 to entry: The blue light hazard radiant exposure is expressed in joule per square metre (J·m−2).

Note 5 to entry: This entry was numbered 17-101 in CIE S 017:2011.

Publication date: 2020-12
Copyright © CIE 2020. All Rights Reserverd.