Front Projection Screen Types

The various screen types that typically are used in front projection can be divided into the following groups. (Remember: The basic physics of all the screens are that bright­ness and viewing angles are compromised against each other. The screen can only reflect the brightness from the projector, but the screen decides how it is reflected.) [8]

Table 4.1 Comparison of Screen Types: Resistance to

ambient Light

screen type

Image Contrast

viewing

peak

ratio

angles

Brightness

Standard white

Poor

Good

Fair

Gained white

Fair

Poor

Good

Tinted

Fair

Good

Poor

Gained tinted

Good

Poor

Fair

Optical

Very good

Good

Fair

Table 4.1 shows a comparison of screen types. Simple projectors are not appropriate for continuous operation. LCD and DLP® projectors exist, but these are designed for simple business use—for example, making short presentations.* Additionally, the lamps and components used in these projectors do not withstand comparison with the engines of cubes. The lamps and other components have a much shorter life span and, in comparison with back projection cubes, give a poorer luminance power, contrast, and image quality.