By NIERBO | 30 October 2018 | 0 Comments
What is the Gain of the Projection Screen?
What is the gain of the projection screen?
Gain: A numerical representation of the inherent reflection characteristics of the screen (the brightness of each angle).
A certain amount of light is projected onto the completely diffuse scattering surface (i.e., the reflecting surface having the same reflectance in the 180 degrees above and below the left and right directions), and the reflection brightness at this time is set to 1. Then, under the same conditions, the same light is projected in the direction perpendicular to the screen, and the brightness of the center point and each point on the same arc is measured. The ratio of the brightness to the brightness of the full diffuse scattering is called the gain of the screen.
The viewing angle at half the gain of the screen—the half-gain view—is also an important indicator of screen technology. The larger the half-gain viewing angle, the more we can clearly see the content on the screen, and the screen content is clearly and perfectly appreciated by more people from different angles.
The effect of gain on the image:
The image without the gain is flat and faithful but is susceptible to ambient and external light.
The screen with gain brings bright, rich, colorful images with less impact on the environment and external light.
However, the gain of the screen and the viewing angle of the screen have a special inverse relationship, that is, the higher the gain, the smaller the viewing angle.
If the gain is too high (semi-gain angle is too small), the effect will be bright in the middle of the picture, the effect of the four corners will be dark, and the high-brightness part will be saturated without layering. Because the energy is too concentrated, only one or two seats in the horizontal direction can see a bright picture.
Therefore, according to different applications, the projection screen should be properly selected.
NIERBO provides a serial professional projection screen. Its silver screen with high gain 2.4 could provide 120°viewing angle.
More comparison as below:
Polyester screen gain 1.3, viewing angle 160°
Canvas screen gain 1.4, viewing angle 160°
Roller screen gain 1.5, viewing angle 160°
Rear projection screen gain 2.1, viewing angle 160°
Metal screen gain 2.4, viewing angle 120°
Gain: A numerical representation of the inherent reflection characteristics of the screen (the brightness of each angle).
A certain amount of light is projected onto the completely diffuse scattering surface (i.e., the reflecting surface having the same reflectance in the 180 degrees above and below the left and right directions), and the reflection brightness at this time is set to 1. Then, under the same conditions, the same light is projected in the direction perpendicular to the screen, and the brightness of the center point and each point on the same arc is measured. The ratio of the brightness to the brightness of the full diffuse scattering is called the gain of the screen.
The viewing angle at half the gain of the screen—the half-gain view—is also an important indicator of screen technology. The larger the half-gain viewing angle, the more we can clearly see the content on the screen, and the screen content is clearly and perfectly appreciated by more people from different angles.
The effect of gain on the image:
The image without the gain is flat and faithful but is susceptible to ambient and external light.
The screen with gain brings bright, rich, colorful images with less impact on the environment and external light.
However, the gain of the screen and the viewing angle of the screen have a special inverse relationship, that is, the higher the gain, the smaller the viewing angle.
If the gain is too high (semi-gain angle is too small), the effect will be bright in the middle of the picture, the effect of the four corners will be dark, and the high-brightness part will be saturated without layering. Because the energy is too concentrated, only one or two seats in the horizontal direction can see a bright picture.
Therefore, according to different applications, the projection screen should be properly selected.
NIERBO provides a serial professional projection screen. Its silver screen with high gain 2.4 could provide 120°viewing angle.
More comparison as below:
Polyester screen gain 1.3, viewing angle 160°
Canvas screen gain 1.4, viewing angle 160°
Roller screen gain 1.5, viewing angle 160°
Rear projection screen gain 2.1, viewing angle 160°
Metal screen gain 2.4, viewing angle 120°
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