What is the difference between a projection screen and a white wall ? Many friends who bought a home theater projector are struggling with whether they need to buy a curtain. The reason why he hesitates is that he does not understand the projection screen. He thinks that the projection screen is the same as ordinary fabrics. It is a waste to buy a projection screen at a big price. Is this really the case?
What is the difference between a projection screen and a white wall ?
If the projection screen is the same as a normal white fabric, then the projection screen will not exist. Projection screens have significant advantages over conventional fabrics. Firstly, the projection screen screen has a strong ability to reflect incident light, which can improve the brightness of the picture. By ingenious processing of the light, the black level effect of the picture can also be changed to enhance the contrast of the picture.
So the projection screen will have such an effect because the projection screen is made with special materials. There are many kinds of projection screen materials, such as glass bead curtain (not cleanable), metal curtain, embossed plastic curtain, embossed plastic is divided into white plastic, gray plastic, silver plastic and so on. Commonly on the market are glass bead curtains and white plastic screens. Generally speaking, the price of the bead curtain is high and low, while the price of the white plastic screen is generally higher.
Compared with the projection screen, the white wall does not have the above-mentioned functions of increasing gain, widening the angle of view, improving resolution, enhancing contrast, enhancing color reproduction, etc., and because the wall surface is easily contaminated, or the texture of the wall itself will cause a certain amount of projection screen. influences. It is also worth mentioning that the white wall does not have a "black border". Don't underestimate the black border. It can improve the attention and contrast of the picture, improve the visual quality of the picture itself, and avoid the surrounding influence. These are the reasons why white walls are not a substitute for projection screens.
Through the above analysis, everyone has a new understanding of the difference between the projection screen and the white wall , because the projection screen has a high technical content, the price will be so high.
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