Why do we need a projector screen?
When utilizing the latest projection technologies, you aim at achieving a perfect projected image, this is true for both residential or professional use. To achieve this you need to combine the projection device with a corresponding projection screen, as projectors require the image to be reflected on a surface. Thus a surface which will maximize the optical information without losing the quality of pictures is required to achieve optimum results.
Types of Projector Screens
Before you purchase an electric screen, you need to know what situation you are going to be using it in, to make sure you get the right screen for your needs.
The Screen Size
Generally, the general rule of thumb is:
- The minimum distance from the electric projection screen to the front row of seats = 1.5 times the width of the screen.
- The maximum distance for the audience to be from the projector screen = 6 times the width of the screen.
- For a seated audience the screen should be at least 90cm from the floor.
Beyond these rules of thumb, you will want to be looking at a few other factors such as;
- The size of your room – You can only have a screen as big as your room and fit, so firstly measure the space available for you screen.
- Your Projector – Different projectors have different performance, you want to make sure that your projector screen sizes fits in with the optimum picture that your projector can produce.
- The conditions you will be using the screen in – If you are in a dedicated cinema room with black out blinds, you may not need the extra brightness that glass bead screens offer. If you are in a fairly light room with no control over how bright it will be then a glass bead screen may be better suited to your needs.
The Aspect Ratio
Each projection method has its own particular ratio of height to width. The most common aspect ratios are 4:3 and 16:9.
- 4:3 – This is the most common aspect ratio and is common with all video projection.
- 16:9 – Wide-Screen Projection, commonly associated with Hi-Definition projection.
The Projector Screen Surface
The reflective properties of a projector screens surface are defined as a screens gain factor. The higher the gain the brighter a projected image will appear, and the more restricted the viewing angle will become.
Matt White Projector Screens –
- Equally scatters light in all directions (horizontally & vertically)
- Have a wide viewing angle, optimum viewing up to 45° right or left of the centre of the screen, admissible viewing angle as far as 55-60°
- Have a gain factor of approximately 1 – 1.2
Glass Bead Projector Screens –
- Reflects light along the projection line approximately twice as brightly as a matt white screen.
- Facilitate a very good / bright viewing conditions up to 40° right / left of the centre of the screen.
- Have a gain factor of approximately 2-2.5
Matt white screens are mainly suited for medium to high brightness projectors (2,500 ANSI lumens and above) in rooms that can be partially darkened via black out blinds etc.
Glass bead screens achieve better results when lower power projectors are used (under 2,500 ANSI lumens) in environments where there is a large degree of ambient light or when very large screen sizes are required.
12v Trigger System
Our new 2016 model screens come integrated with a 12 volt trigger system.
Instructions regarding connection are as follows:
The red and green on the auxiliary wire will trigger the screen to drop , eg if connected to a trigger from equipment that outputs a voltage on start up, and when the voltage is taken away the screen will retract.
If your equipment has an output that can be set up to give out a voltage on start up the screen can drop down at the same time, and it will retract when the equipment is turned off.
Its 12v dc, attach the red to negative and the green to positive.
There are RJ adapters on ebay but its fine to cut the wires to terminate it in a plug that suits your equipment.
A general schematic of the controls can be found on our Downloads Page.