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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
As seen from above
90°
As seen from the side
H
90°
a
a is the distance between the lens and the screen, and corresponds to a range of 1.6m to
14.1m (63.0 inches to 560.0 inches). H is the height from the image bottom to the center of
the lens.
Lens center
projection distance a (m)
projection
size
min length
(inches)
(zooming max)
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
(inches)
(zooming max)
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)
max length
min length
max length
(zooming min)
(zooming max)
(zooming min)
1.8
8.7
2.8
12.5
3.7
16.8
4.7
21.7
7.3
32.5
9.4
41.9
11.7
52.4
14.1
65
height (H)
(inch)
max length
min length
max length
(zooming min)
(zooming max)
(zooming min)
71
3
110
5
150
7
190
9
290
13
370
16
460
21
560
26
8.8
13.1
17.3
21.9
32.9
43.9
54.8
65.8
3
5
7
9
13
17
22
26
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