BenQ MP778, User Manual

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Positioning your projector 19
MP778 Projection dimensions
Refer to "Dimensions" on page 92 for the center of lens dimensions of this projector before
calculating the appropriate position.
There is 3% tolerance among these numbers due to optical component variations. BenQ
recommends that if you intend to permanently install the projector, you should physically test
the projection size and distance using the actual projector in situ before you permanently
install it, so as to make allowance for this projector's optical characteristics. This will help you
determine the exact mounting position so that it best suits your installation location.
Screen size Distance from screen (mm) Vertical offset
(mm) Diagonal W
(mm)
H
(mm)
Min length Average Max length
Inch mm (max. zoom) (min. zoom)
30 762 610 457 850 1105 1360 69
40 1016 813 610 1133 1473 1813 91
50 1270 1016 762 1417 1842 2267 114
60 1524 1219 914 1700 2210 2720 137
80 2032 1626 1219 2267 2947 3627 183
100 2540 2032 1524 2833 3683 4533 229
120 3048 2438 1829 3400 4420 5440 274
150 3810 3048 2286 4250 5525 6800 343
200 5080 4064 3048 5667 7367 9067 457
220 5588 4470 3353 6233 8103 9973 503
250 6350 5080 3810 7083 9208 11333 572
300 7620 6096 4572 8500 11050 13600 686
Maximum zoom Minimum zoom
Projection distance
Center of lens
Screen
Vertical offset