Many users who are new to projectors may have such questions: What is the difference between a projection screen and a white wall? Can I see it clearly even when I project it on a white wall?
To understand this, let's first talk about how projection screens work.
The projector uses light as the medium for image transmission, projects the picture onto a plane, and then uses the diffuse reflection of this plane to reflect the image information to our eyes. This plane can be a curtain or a white wall.
However, since our white walls are usually painted with wall paint, the reflective surface of the diffuse reflection will be rough, resulting in irregular reflected light, so the resulting image brightness will be relatively low.
What is the difference between a projection screen and a wall?
To understand this, let's first talk about how projection screens work.
The projector uses light as the medium for image transmission, projects the picture onto a plane, and then uses the diffuse reflection of this plane to reflect the image information to our eyes. This plane can be a curtain or a white wall.
However, since our white walls are usually painted with wall paint, the reflective surface of the diffuse reflection will be rough, resulting in irregular reflected light, so the resulting image brightness will be relatively low.