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7
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).
Example:
With a 10’ image, at the lowest projection angle, the bot-
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.
FIGURE 5
Lowest image projection angle
F
IGURE
6
Highest image projection angle
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
L L
Inout InIn
L
BNCBNC
R RR
A
0
A
0
R
s
R
G
G
B
B
10’ high
image
bottom of image
5’ below lens
H
lens center
L L
Inout InIn
L
BNCBNC
R RR
A
0
A
0
R
s
R
G
G
B
B
10’ high
image
bottom of image
parallel with lens
lens center