Hd In Function Of The Lens Throw Ratio (Tr) - Barco F80 User Manual

Safety
The light emitted from the screen within the observation shall never exceed the RG2 exposure limit,
determined at 10 cm. The HD
cd/m² or 15000 LUX.

1.4.4 HD in function of the lens Throw Ratio (TR)

TR (Throw Ratio)
The ratio of the distance to the screen (throw) to the screen width.
HD versus Throw Ratio
1
5
4
3
2
1
0
Image 1–4
Graph shows Hazard Distance in meters versus Throw ratio of the lens
20 R5906852 /06 F80
can be neglected if the measured light at the screen surface is below 5000
diffuse
2
F80-Q12, F80-4K12 F80-Q9, F80-4K9
Throw Ra o
3
F80-Q7, F80-4K7
1
2
3