ViewSonic’s X1 and X2 LED projectors were also certified to deliver bright and vivid images even under low blue light mode, the Taiwanese-American company said in a press release.
Too much blue light is known to be harmful for human health, with researchers identifying links between prolonged blue light exposure and health problems, including difficulties sleeping and degenerative illness.
TÜV SÜD's low blue light certification adopts stringent industry standards to protect the users' eye health. It has four gradings of low blue light ratio to ensure the tested device complies with all requirements and other criteria including electrical safety, photobiological safety, and no UV content.
TÜV SÜD's certification process measured a lower blue light ratio than sunlight for the projectors.
"Despite the indirect light from the projector lessening eye fatigue and discomfort after prolonged viewing, eye hazards from blue light in the beam is still an important concern," said Alex von Mylius, product certification director of TÜV SÜD Global Product Service Division.
"Our goal is to address the visual side effects when taking benefits from blue light ratio reduction. We've optimized the yellowish issue when the blue light ratio is reduced under low blue light mode. After a series of rigorous tests, we are excited to share that ViewSonic's X1 and X2 have passed with outstanding image quality."