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The bottom of the image can move from half way below the pro-
jector's lens (Figure 5) to parallel with the lens (Figure 6).
With a 10' image, at the lowest projection angle, the bot-
Example:
tom of the image is 5' below the projector's lens; at the highest
projection angle, the bottom of the image is parallel with the lens.
10' high
lens center
image
H
bottom of image
5' below lens
10' high
image
bottom of image
parallel with lens
Once you know the diagonal image size, you can figure out the
width and height using these formulas:
width (inches) = diagonal (inches) x 0.8
height (inches) = width (inches) x 0.75
lens center
s
R
G
B
A
0
A
0
BNC
BNC
L
R
L
R
L
R
G
B
R
out
In
In
In
F
IGURE
Lowest image projection angle
R
G
B
A
A
s
0
0
BNC
BNC
L
R
L
R
L
R
G
B
R
out
In
In
In
F
IGURE
Highest image projection angle
5
6
7
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Troubleshooting
