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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.)
Screen
a (cm) = projection size (inches) x 1.433 – 13.32
H (cm) = projection size (inches) x 0.1868
"a" is the distance (cm) between front edge of the projector and the screen, and cor-
responds to a range of 40 cm to 177 cm. "H" is the height from the image bottom to the
center of the lens.
projection size inches
(=cm)
40 (=101.6 cm)
50 (=127.0 cm)
60 (=152.4 cm)
80 (=203.2 cm)
100 (=254.0 cm)
120 (=304.8 cm)
As seen from above
Lens center
As seen from side
Lens center
projection distance a (cm) [inches]
Edge of the projector to image
44.0
[17.3]
58.3
[23.0]
72.7
[28.6]
101.3
[39.9]
130.0
[51.2]
158.6
[62.5]
23
height (H) (cm) [inches]
7.5
[2.9]
9.3
[3.7]
11.2
[4.4]
14.9
[5.9]
18.7
[7.4]
22.4
[8.8]
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