I. Is there a difference between a projection cloth and a white wall?
A projection cloth is a projection screen. Friends who have a projector at home usually buy a projection screen to use with the projector, but In fact, the projection cloth is a white curtain. The principle of projection on the curtain is the same as that of the white wall. So what is the difference between the projection cloth and the white wall?
1. Projection effect
Compared with ordinary white walls, although the projection screen is white, the projection screen will use special materials and Coated with optical paint can enhance its reflective properties. In comparison, the projection effect of the projection cloth is better than that of the white wall in terms of picture brightness, contrast, color saturation, sharpness, etc. Although it seems that the difference is not big, in reality There is above.
2. The sense of ritual
The projection cloth is like a movie screen, giving you the feeling of watching movies at home; although the white wall projection can also cast , but I always feel that the sense of ritual is not so strong; of course, if it is a friend who pursues a minimalist life, then this can be ignored.
3. Applicability
The projection screen can be installed in a specific position at will, and some screens can be folded to save space and not affect other spaces The use of white wall projection requires a white wall, and there can be no other things on the wall, otherwise it will affect the projection effect.
The above is the difference between the projection screen and the white wall. It can be seen that the projection screen is a better existence, and its advantages are greater.
Second, what are the advantages of projection screens
Compared with white walls, the main advantages of projection screens are:
1. The picture is smoother
The projector uses the imaging principle of diffuse reflection, the wall will be uneven, the reflected light will not be concentrated, and the brightness will be greatly weakened; while the projection The surface of the curtain is flatter, and the reflected light has a higher degree of aggregation, which is conducive to the concentration of brightness.
2. Help concentrate
The black border of the projector screen will make our vision focus on the screen, so as to get a better look and feel , and directly projected on the wall, unless you manually animate a frame, it cannot be compared with the projection screen.
3. Save space
Modern urban space is expensive, and most of them adopt the principle of small and refined decoration. To find a clean large white wall, It is difficult to hang anything without hanging anything. The projector screen is a moving white wall, which provides the basic carrier for the projection screen. It can be put away when it is not needed, saving space.
Third, can a white wall replace the curtain?
Yes.
If you don’t want to spend extra money to buy a curtain, of course you can use a white wall instead of the curtain, because they accept the same principle of the projector, the curtain is a white wall, but the material The projection effect of the white wall is worse than the projection effect of the white wall; it is just that the projection effect of the white wall may not be as good as that of the projection screen, the white wall is “usable”, and the projection screen is “easy to use”.
