23
Preparations
Screen
As seen from above
As seen from side
Lens center
Projection Distance and Size
Use the fi gures, 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.)
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)
projection distance a (cm)
[inches]
height (H) (cm)
[inches]
Edge of the projector to image
40 (=101.6 cm)
44.0
[17.3]
7.5
[2.9]
50 (=127.0 cm)
58.3
[23.0]
9.3
[3.7]
60 (=152.4 cm)
72.7
[28.6]
11.2
[4.4]
80 (=203.2 cm)
101.3
[39.9]
14.9
[5.9]
100 (=254.0 cm)
130.0
[51.2]
18.7
[7.4]
120 (=304.8 cm)
158.6
[62.5]
22.4
[8.8]
Lens center
Summary of Contents for TDP-ET10
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