LG PA77U - Manual (Page 20)

20 PREPARATION
Projection Distance per Screen Size
1
Place the projector on a sturdy, level surface, together with the PC or audio/video
source.
2
Place the projector an appropriate distance away from the screen. The distance
between the projector and the screen determines the actual size of the image.
3
Position the projector so that the lens is at a right angle to the screen. If the
projector is not at a right angle, the projected image will look distorted. To correct the
distortion, use the Keystone function. (See page 36)
4
Connect the power cord of the projector and the connected device to the wall outlet.
Ratio of upward projection: 100 %
Scr
een Heigh
t (X)
X/2
X/2
Scr
een
W
idth (
Y)
Y/2
Y/2
DISPLAY
Projection distance (D)
Projection distance (D)
DISPLAY
47.7 mm
(1.8 inches)
16:10 Ratio
Screen
Size (mm)
Screen
Size
(inches)
Screen
Width (Y)
(mm)
Screen
Width (Y)
(inches)
Screen
Height (X)
(mm)
Screen
Height (X)
(inches)
Projection
Distance
(D) (mm)
Projection
Distance
(D) (inches)
762 30 646 25.4 404 15.9 902 35.5
889 35 754 29.6 471 18.5 1056 41.5
1016 40 861 33.8 539 21.2 1210 47.6
1143 45 969 38.1 606 23.8 1366 53.7
1270 50 1077 42.4 673 26.4 1520 59.8
1397 55 1185 46.6 741 29.1 1674 65.9
1524 60 1292 50.8 808 31.8 1828 71.9
1651 65 1400 55.1 875 34.4 1983 78
1778 70 1508 59.3 943 37.1 2137 84.1
1905 75 1615 63.5 1010 39.7 2291 90.1
2032 80 1723 67.8 1077 42.4 2445 96.2
2159 85 1831 72 1145 45 2601 102.4
2286 90 1938 76.2 1212 47.7 2755 108.4
2413 95 2046 80.5 1279 50.3 2909 114.5
2540 100 2154 84.8 1347 53 3063 120.5