Toshiba TDP TDP-T9 Owner's Manual - Page 23
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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.)
As seen from above
Screen
90
As seen from the side
Lens center
H
90
a
a is the distance (m) between the lens and the screen, and corresponds to a range of
1.36 m to 11 m. H is the height from the image bottom to the center of the lens.
a (min length) =
projection size (inches)
a (max length) =
projection distance a (m)
projection
min length
size
(zooming
(inches)
34.67
1.36
40
1.57
60
2.36
80
3.15
100
3.94
150
5.90
200
7.87
250
9.84
254.22
23
projection size (inches)
25.3807
23.0947
max length
(zooming
max)
min)
1.50
1.73
2.60
3.46
4.33
6.49
8.65
10.82
10
11
height
(H)
(cm)
7.9
9.1
13.7
18.3
22.9
34.3
45.7
57.2
58.1