The principle of eye protection is to reduce the energy of short-wave high-energy blue light. There are generally two methods: 1. Change the color temperature. The warm color temperature shows that the blue light energy emitted by civil screens can be about 20% lower than the cold color temperature, which is why all eye protection modes are yellow. 2, reduce the brightness, blue light energy is 2-3 times that of visible light. The peak of the figure below is the blue light energy. The high-energy blue light in the range of 400~450NM is imperceptible to human eyes, but the energy is much higher than the amplitude of visible light on the right. But lowering the brightness will also reduce the blue light energy.
The short answer to the question is that certified screens can generally reduce blue light energy by 20%. If you need further protection, you can wear anti-blue glasses? This can generally save energy by 35-45%. The most effective movie should be the screen movie. Tmall has Christie's patented anti-blue technology film, which can be reduced by 69%.