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Projection Distance and Size
Use the figures, tables, and formulas below to determine the projection size and projection
distance. (Projection sizes are approximate values for full-size picture with no keystone
adjustment.)
Screen
90°
H
a is the distance between the lens and the screen, and corresponds to a range of 1.6m to
13.7m (63.0 inches to 539.4 inches). H is the height from the image bottom to the center of
the lens.
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As seen from above
As seen from the side
Lens center
90°
a
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projection distance a (m)
projection
size
min length
max length
(inches)
(zooming max)
(zooming min)
40
1.6
60
2.3
80
3.1
100
4
150
6
200
8
250
10
300
12
projection distance a (inch)
projection
size
min length
max length
(inches)
(zooming max)
(zooming min)
40
63
60
91
80
120
100
160
150
240
200
320
250
390
300
470
1 inch=2.54 cm
25
height (H)
(cm)
min length
max length
(zooming max)
(zooming min)
1.8
8.7
8.8
2.8
12.5
13.1
3.7
16.8
17.3
4.7
21.7
21.9
7.3
32.5
32.9
9.4
41.9
43.9
11.7
52.4
54.8
14.1
65
65.8
height (H)
(inch)
min length
max length
(zooming max)
(zooming min)
71
3
3
110
5
5
150
7
7
190
9
9
290
13
13
370
16
17
460
21
22
560
26
26
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