| 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).
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