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Glossar
The proper guideline for large-screen projection
How to choose the proper type of screen
Which screen is to be preferred first of all depends on the application. For frequent shows in the same location a wall or ceiling screen – manually or electrically operated, with or without frame – should be considered. For shows in different locations a tripod screen resp. a portabe screen is the better solution.
How to choose the proper picture format
How to choose the proper height of the screen (4:3)
- Height of the screen
= one sixth of its distance to the last row of seats
- Distance between the screen and the first row of seats
= height of the screen x 1.5
- Minimum distance between the screen bottom and the floor
= 0.60 – 0.90 m for home cinema use
> 1.25 m if the audience is sitting
> 1.60 m if the audience is standing
How to choose the proper light output of the projector
The light intensity reflected by the projection screen is measured in lux. For an optimal picture quality the ratio between the lux value of the projected image and that of the room light should be at least 5:1,or even better >10:1.
As a thumb rule the normal room light in conference rooms is 80 – 100 lux.
The light intensity reflected by the screen should then be >500 lux.
How to choose the proper screen fabrics
Matt white – Datex/R – HighContrast/S
Matt white – The screen fabric matt white is undoubtedly
the first choice and guarantees
bright, natural colours without a loss of intensity.
- Ideal viewing angle 80 – 100°
- Gain factor 1
- For lecture rooms in which the ambient light can be easily controlled
Datalux
The screen fabric datalux was developed for special applications that required a higher reflection value and a smaller viewing angle. It is ideal for projection from the ceiling.
Available screen fabrics
| Screen fabrics |
Reflection value |
Viewing angle |
Weight per sqm |
Thickness mm |
Verwendung |
| Matt white/S |
1,0 |
100° |
425 |
0,34 |
Installation/Mobile |
| Matt white/M |
1,0 |
100° |
1350 |
0,95 |
Installation |
| Matt white/ML |
1,0 |
100° |
1350 |
0,95 |
Elpro Large |
| Matt white/D |
1,0 |
100° |
490 |
0,26 |
FastFold |
| Matt white/P |
1,0 |
100° |
480 |
0,45 |
Home Screen |
| Matt white/W |
1,1 |
80° |
900 |
0,65 |
Cineroll Electric (professional) |
| Matt white/WP |
1,1 |
80° |
500 |
0,35 |
Cinefl ex Electric IR |
| Matt white/WF |
1,1 |
80° |
600 |
0,35 |
Cinelux Mobil 2 |
| Matt white/WD |
1,1 |
80° |
350 |
0,27 |
Cinelux Compact Mono |
| Matt white |
1,0 |
100° |
450 |
0,35 |
Porter |
| Datex/R |
1,8 |
60° |
490 |
0,26 |
Fastfold/Home Screen |
| Datalux/F |
2,2 |
70° |
160 |
0,11 |
Table-/LiteScreen |
| Datalux/S |
1,5 |
70° |
425 |
0,35 |
Installation/Mobile |
Characteristics screen fabrics MW/W
- High-quality fibre glass with therm plastic coating on both sides.
- Conforms with all fire safety regulations according to DIN 4102-B1.
- Black, light-proof rear side.
- Special protective coating of the surface.
Characteristics screen fabrics MW/M
- Double-sided vinyl on glass fibre.
- Conforms with all fire safety regulations according to DIN 4102-1 (B1).
- Black, light-proof rear side.
- The high quality of the fabrics guarantees an absolutely flat screen surface.
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