Figure 4.

Irradiance of the blue light hazard function. The Blue light hazard function according to ISO 8980 represents the relative spectral sensitivity of the human eye to blue light hazards, based on the effectiveness of radiation to induce photoreversal of bleaching. The emission spectrum of an ordinary smartphone screen on maximum brightness shows a distinct overlap in the potentially harmful blue peak area, and melanopsin sensitivity, but also image‐forming related S‐cone and rod absorbance spectrum. Normalized absorbance spectra are depicted according to Bowmaker and Dartnall, 1980 19