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Superb home cinema images:
DAVISION Screen Materials |
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Preliminary definitions |
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Material:
Our screens are made of PVC or fibre glass in different colors. PVC and fibre glass are extremely long lasting materials, they can be easily cleaned
with a wet micro-brin cloth and are persistent against any normal defilement at home.
Besides the, for home cinema applications in darkened rooms ideal color white, our screen fabrics are available in grey also. Grey screen fabrics
enhance the contrast in environments with diffuse light which cannot be totally darkened.
But even in totally dark screening rooms, grey screens can be a better choice: modern projectors normally produce a huge amount of light which can be
reflected by the surrounding white walls in your living room. By using a grey screen, the black-level will be enhanced and the image seems to have a
better contrast ratio.
All DAVISION screen fabrics are M1 7201-96 certified and hardly inflammable. They conform to the highest security standards for home theater screens. |
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Gain factor:
The gain factor informs you of the luminance of the respective projector screen in comparison to a surface that is standard white-coated. The
factor expresses how many times lighter the picture is seen by the viewer. The viewing angle must be taken into consideration, though.
To be able to compare different projector screen´s coatings, one has a matt white, rough surface that reflects light equally in all directions
given as gain factor 1.0.
Projector screen surfaces that reflect less light to left and right and so achieve a lighter picture for the viewer who is sitting in the middle,
have a factor that is higher than 1.0. Such a high factor can only be achieved by "bundling" the light in one direction. Through this bundling,
the diffused light of the projection surface is reduced. Through this a lighter depiction of the picture depends very much on the viewing angle.
For use in the cinema viewing at home, the Gain-Factor of 1.2 should not be exceeded. In any case, make sure to ask the manufacturer of the cloth
for a diagram confirmation of the Gain-Factor in which is described the dependency factors of the viewing angles. |
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Black backing:
The Black backing reduces light scatter that can be reflected from a wall behind the screen, especially when framed screens are installed in white
rooms like living rooms. The light scatter significantly worsens the contrast ratio of the projected image.
Black backings are able to solve that problem: they allow the screen to reproduce a deep black and considerable better contrast ratios. Even the
colors are more vivid and realistic, because the grey scale values (and by that the values of the reproduced colors) remain accurate and exactly
like they are meant to be. |
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Thickness of the screen:
The screen thickness is very important, especially for the proper operation of motorized screens. The thicker the screen drapery is, the more insensible
the screen will be against distortions.
A tension screen with a thick screen material is able to offer an almost flat screen surface for sharp home cinema images. |
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