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Specialist screen surfaces and unusual shapes

Acoustically transparent screens are either woven or perforated.  They allows sound to travel through the screen from the rear and are typically used in home cinema applications or in auditoriums.   Woven gives a higher quality sound but has restrictions.  For example, it is too textured to successfully project a 4K image.  Perforated is a better choice for most commercial applications.  Of course, if you have holes in the screen, light can get through too.  More holes gives better sound but a poorer quality image and vice versa. So you need to consider the total environment and ask the customer, in the sound/image balance, which element is more important to them.

Green and blue screens are used for broadcast – in fact any colour could be used as the technology is all in the camera which screens out a particular colour so that a different background can be used.  Green tends to be the standard – many white skinned people have lot of blue in their skin tone and so a blue screen can cause issues as part of their face is also screened out.

A very high gain silver screen is often used for passive 3D installations to compensate for the light lost through the polarising glasses.

Curved screens give a more immersive experience for the user .  They are often used in simulation environments.  There are challenges in that the image has to be warped to accommodate the curve.  You’ll also undoubtedly need multiple projectors and have to edge blend the images – you must have a low gain surface for this otherwise the overlaps areas will be very noticeable.

Touch operation – screens don’t make great interactive products as the surfaces are just too delicate for regular touching.  They would be quickly damaged.  You could possibly get away with it with a rigid screen but if you need touch operation there are better solutions such as an interactive displays or displays with overlays.  Having said that, you could  use a projection screen with gesture based control technology.

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