Without a projector, there would be no curtains. Without a projector, you can't project, so it's useless. The projector can use no curtain, but the projection effect will be discounted. Simply put, in the process of projection, the curtain will have a gain effect, and the gain effect brought by different materials is different. The white wall has no gain effect on the projection picture, and the dark lines of the white wall will also affect the projection effect of the actual picture.

High-end projection products on the market can be directly projected onto the wall without curtain. For example, when the Shell Laser Projection X3 has 3200ANSI lumens, it can be used without curtains. However, the premise is to ensure that the walls are clean and tidy. White walls are recommended. If it is decorated with wallpaper such as textured wall film, it is recommended to use curtains, so that the projected effect will be better.