By means of a number of measurements, we are able to make a good comparison of the performance of the screens in a specific situation. What do we measure?
The amount of light emerging perpendicular to the screen.
At which angle is the gain 50% of the peak gain? If this angle is very small (<15º), a ‘hot spot’ is created. Strong dimming occurs towards the edges of the screen, especially with images that are not very bright. This effect is aggravated when the viewer is close to the screen.
The amount of light not absorbed by the screen.