Projector Screen Gain Mean

Gain is a property of a projection screen and is one of the specifications quoted by projection screen manufacturers.

Projector screen gain mean. A screen having a peak gain reading of 1 5 reflects 50 more light directly in front of the light s centerline path when compared to a 1 0 gain screen. Choose the 16 10 screen if you use a native wide screen notebook as your media player or a wide format xga uxga projector. 1 78 1 or hdtv high definition television was developed by smpte as being the geometric mean of the full range of us and european standard aspect. A gain greater than 1 0 means the projection screen fabric increases the brightness of the projected image while a gain less than 1 0 means the image produced is not as bright.

A 1 000 lumen projector aimed at a screen with 1 5 gain will be perceived at 1 500 lumens. A projector screen with a gain of 1 5 will project back the light 1 5x brighter than the light being projected at the screen. For example a screen gain of 1 0 means all the light directed at the screen reflects back with the same brightness. The screen achieves this by focusing the light into a more narrow reflective angle instead of uniformly reflecting the light in all directions.

There are a lot of variables that mean. Very high gain levels could be attained simply by using a mirror surface although the audience would then just see a reflection of the projector defeating the purpose of using a screen. Screens with higher gain will exhibit more mirror like properties namely a bright hot spot in the screen an enlarged and greatly blurred reflection of. This doesn t mean that a 2 0 gain screen will make a projector s image twice as bright as the same projector on a 1 0 gain screen but it will be brighter.

A 2 0 gain screen reflects 100 more light and so on. A high gain screen is constructed to reflect more of the projector s light energy back toward the centerline of the projection path and less light energy to the oblique angles of view. The screen achieves this by focusing the light into a more narrow reflective angle instead of uniformly reflecting. A 1 000 lumen projector aimed at a screen with 1 5 gain will be perceived at 1 500 lumens.

The number that is typically measured is called the peak gain at zero degrees viewing axis and represents the gain value for a viewer seated along a line perpendicular to the screen s viewing surface the gain value represents the ratio of brightness of the. Fusion silver crystal vision fix frame projector screen sizes 84 16 9 screen color silver or black 92 16 9 screencolor silver or black 100 16 9 screen col. A projector screen with a gain measurement of 8. Inversely a screen with a peak gain of 0 5 reflects 50 less light than a 1 0 gain screen etc.