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Adjusting the Projection Distance
AN-P48EZ
Throw distance ratio
1:4.6 to 6.1
NORMAL Mode (4:3)
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
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.
(Max.) = (0.1214x
0.1272)
3.28
(Min.) = (0.0927x
0.1233)
3.28
(Upper) = 0.3x
(Lower) = 0
Screen size (4:3) (X)
Projection distance (L)
Width
Height
Maximum (l
)
1
261
147
130 7
(39.8 m)
174
98
87 3
(26.6 m)
131
74
65 7
(20.0 m)
116
65
58 1
(17.7 m)
92
52
46 3
(14.1 m)
87
49
44 0
(13.4 m)
80
45
40 4
(12.3 m)
73
41
36 9
(11.2 m)
63
35
31 10
(9.7 m)
52
29
26 7
(8.1 m)
(Max.) = (0.1323x
0.1272)
3.28
(Min.) = (0.101x
0.1233)
3.28
(Upper) = 0.2451x
(Lower) = 0.0817x
3% in the formula above.
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
99 9
(30.4 m)
6 2
(186.8 cm)
66 7
(20.3 m)
4 1
(124.5 cm)
50 2
(15.3 m)
3 1
(93.4 cm)
44 7
(13.6 m)
2 9
(82.8 cm)
35 5
(10.8 m)
2 2
(66.0 cm)
33 6
(10.2 m)
2 1
(62.3 cm)
30 10
(9.4 m)
1 11
(57.3 cm)
28 3
(8.6 m)
1 9
(52.3 cm)
24 3
(7.4 m)
1 6
(44.8 cm)
20 4
(6.2 m)
1 3
(37.4 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
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)
E-28
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