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Adjusting the Projection Distance
Standard Lens
Throw distance ratio
1:1.8 to 2.4
NORMAL Mode (4:3)
Diag.
300
200
150
100
84
72
60
40
The formula for screen size and projection distance
l
1
l
2
h
1
h
2
WIDE Mode (16:9)
Diag.
300
200
150
133
106
100
92
84
72
60
40
The formula for screen size and projection distance
l
1
l
2
h
1
h
2
• There is an error of
• Values with a minus ( ) sign indicate the distance of the lens center below the bottom of the screen.
Screen size (4:3) (X)
Projection distance (L)
Width
Height
Maximum (l
)
1
240
180
47 0
(14.3 m)
160
120
32 2
(9.8 m)
120
90
23 6
(7.2 m)
80
60
15 11
(4.9 m)
67
50
13 2
(4.0 m)
58
43
11 1
(3.4 m)
48
36
9 6
(2.9 m)
32
24
6 1
(1.9 m)
(Max.) = (0.0482x
0.0226)
3.28
(Min.) = (0.037x
0.041)
3.28
(Upper) = 0.3x
(Lower) = 0
Screen size (4:3) (X)
Projection distance (L)
Width
Height
Maximum (l
)
1
261
147
51 3
(15.6 m)
174
98
34 5
(10.5 m)
131
74
25 11
(7.9 m)
116
65
23 0
(7.0 m)
92
52
18 3
(5.6 m)
87
49
17 0
(5.2 m)
80
45
15 10
(4.8 m)
73
41
14 1
(4.3 m)
63
35
12 0
(3.7 m)
52
29
10 2
(3.1 m)
35
20
6 6
(2.0 m)
(Max.) = (0.0525x
0.0546)
3.28
(Min.) = (0.0404x
0.0397)
3.28
(Upper) = 0.2451x
(Lower) = 0.0817x
3% in the formula above.
Lens center to the lower edge of the screen (H)
Minimum (l
)
Upper lens shift position (h
2
36 2
(11.0 m)
7 6
(228.6 cm)
24 3
(7.4 m)
5 0
(152.4 cm)
18 4
(5.6 m)
3 9
(114.3 cm)
12 0
(3.7 m)
2 6
(76.2 cm)
10 1
(3.1 m)
2 1
(64.0 cm)
8 6
(2.6 m)
1 10
(54.9 cm)
7 3
(2.2 m)
1 6
(45.7 cm)
4 7
(1.4 m)
1 0
(30.5 cm)
x: Screen size (diag.) (X) (inches)
l: Projection distance (L) (feet)
h: Lens center to the lower edge of the screen (H) (inches)
Lens center to the lower edge of the screen (H)
Minimum (l
)
Upper lens shift position (h
2
39 5
(12.0 m)
6 2
(186.8 cm)
26 5
(8.1 m)
4 1
(124.5 cm)
19 11
(6.1 m)
3 1
(93.4 cm)
17 7
(5.4 m)
2 9
(82.8 cm)
14 0
(4.3 m)
2 2
(66.0 cm)
13 1
(4.0 m)
2 1
(62.3 cm)
12 1
(3.7 m)
1 11
(57.3 cm)
10 10
(3.3 m)
1 9
(52.3 cm)
9 3
(2.8 m)
1 6
(44.8 cm)
7 10
(2.4 m)
1 3
(37.4 cm)
5 0
(1.5 m)
9.8
(24.9 cm)
x: Screen size (diag.) (X) (inches)
l: Projection distance (L) (feet)
h: Lens center to the lower edge of the screen (H) (inches)
)
Lower lens shift position (h
)
1
2
0.0
(0.0 cm)
0.0
(0.0 cm)
0.0
(0.0 cm)
0.0
(0.0 cm)
0.0
(0.0 cm)
0.0
(0.0 cm)
0.0
(0.0 cm)
0.0
(0.0 cm)
)
Lower lens shift position (h
)
1
2
2 1
( 62.3 cm)
1 4
( 41.5 cm)
1 0
( 31.1 cm)
10.9
( 27.6 cm)
8.7
( 22.0 cm)
8.2
( 20.8 cm)
7.5
( 19.1 cm)
6.9
( 17.4 cm)
5.9
( 14.9 cm)
4.9
( 12.5 cm)
3.3
( 8.3 cm)
E-24
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