52‐1: Blue‐Light Eye Safety Predictions under Ambient Light: ePaper Displays with Front Light vs. Emissive Displays

Blue light from displays may be hazardous to the viewer's eye. Although reflective ePaper displays can emit blue light if a LED front light is used, the reflection of ambient light effectively reduces its relative proportion in the display's total radiance spectrum. This is predicted by standard optical measurements of ePaper's emissive and reflective characteristics, combined with ambient illumination models. The beneficial effect of ambient light reflection is absent for emissive displays.