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Throw Distance
Throw distance is the distance measured from the front of the projector to the screen. This is an important calculation
in any projector installation as it determines whether or not you have enough room to install your projector with a de-
sired screen size and if your image will be the right size for your screen.
You can quickly estimate the throw distance by taking the width of the screen and multiplying it by the lens throw ratio;
see Figure 3-2. The result of this calculation tells you roughly how far back the projector should be positioned from the
screen in order to project a focused image large enough to fill the screen.
Estimated Throw Distance
Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio
Screen width (W
)
TD
Figure 3-2: Estimated Throw Distance
Two models of the H9080FD are available, one with 1.56-1.86:1 lens (PA03500-002) and the other with 1.85-2.40:1
lens (PA03500-001). With optional zoom adaptors throw ratios of 1.24 – 3.0 can be achieved.
The standard H9080FD offers throw ratios between 1.85:1 and 2.40:1.
With the optional, short-throw lens, the H9080FD offers throw ratios between 1.56:1 and 1.86:1.