The projector screen can be used to project images that usually have a support structure. Projections or front or rear projections, the former are more common. Depending on various other factors, the projectors are also recorded in a portable, electric and manual category. The handhelds are very light inwards and outwards and are quite favorable, while the electric screen is a bit expensive but it is easier to navigate and retract. Fixed screens are typically wall mounted and are suitable for dedicated home theater rooms while the portable projection screen for great presentations, travel instructors and other people because it is very easy to set them up.
The most common projection is white or gray, and the gray increases the contrast and absorbs the direct environmental light. However, the choice between the two is based on various factors, such as the type and contrast of the projector and the amount of light in the room.
The other design type is the switchable projection screen – they can be switched between clear and opaque and allow you to easily switch a window to a screen where you can view images from both sides and from different angles.
One of the most important features of forecasts is their gain – this is the reflection factor of the screen, typically between 0.8 and 2.5. Larger screen viewing is not necessarily a better visual experience because it is hot spots where the center of the screen is brighter than the screen sides, but this is less of a problem with high-brightness rear-view or curved screens. If the curved projection screen is properly positioned and fit properly in the seats, the full screen will be "hot spot" and the image brightness will be even.
Screen geometry is another important factor and refers to the aspect ratio of the screen (width divided by height). The most common aspect ratios are 4: 3, 16: 9 and 1: 1. 1: 1 screens are obviously square and typically used for overhead projectors, but are also suitable for limited locations. The 16: 9 screen should be used with HDTV Video projectors and 4: 3 with NTSC Video and Pal Video.