Projectors do not protect the eyes, but they are less harmful to the eyes.
Projector is projected onto a curtain or wall to present the image, the eyes look at the diffuse reflection of light, thus less damage to the eyes. However, it is important to note that the light from a laser projector should never be directed at the eyes, as direct light can cause damage.
Diffuse reflection of light is less bright, less irritation to the eyes, the phenomenon of visual fatigue during prolonged use will be alleviated, can better protect the eyes. Diffuse reflection of light is irregular around the reflection, so that the human eye does not look too harsh, diffuse reflection of light on the projector will not screen flicker, not easy to cause eyestrain phenomenon.
In the use of the projector, should pay attention to avoid direct eye projector, under the projector should be back to the beam, you can also properly reduce the brightness of the projector.