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Chapter 2 Getting Started — Setting up
ENGLISH - 37
[GEOMETRY] projection range
[VERTICAL KEYSTONE] (viewed from the side) [HORIZONTAL KEYSTONE] (viewed from above)
Screen
Screen
Vertical arc correction (viewed from the side) Horizontal arc correction (viewed from above)
Screen
Projection distance
Arc radius
Screen
Projection distance
Arc radius
Arc center
Screen
Projection distance
Arc radius
Arc center
Screen
Projection distance
Arc radius
Projection
lens Model
No.
Only for [KEYSTONE] [KEYSTONE] and [CURVED] used together Only for [CURVED]
Vertical
keystone
correction
angle α (°)
Horizontal
keystone
correction
angle β (°)
Vertical
keystone
correction
angle α (°)
Horizontal
keystone
correction
angle β (°)
Min. value of
R2/L2
Min. value of
R3/L3
Min. value of
R2/L2
Min. value of
R3/L3
ET-D75LE1 ±40 ±15 ±20 ±15 1.0 2.3 0.6 1.3
ET-D75LE2 ±40 ±15 ±20 ±15 0.8 1.6 0.5 0.9
ET-D75LE3 ±40 ±15 ±20 ±15 0.6 1.1 0.3 0.6
ET-D75LE4 ±40 ±15 ±20 ±15 0.4 0.7 0.2 0.4
ET-D75LE5 ±22 ±15 ±8 ±8 2.0 4.9 1.2 2.9
ET-D75LE6 ±28 ±15 ±10 ±10 1.6 3.9 0.9 2.3
ET-D75LE8 ±40 ±15 ±20 ±15 0.2 0.4 0.2 0.3
ET-D75LE10 ±40 ±15 ±20 ±15 1.1 2.6 0.6 1.5
ET-D75LE20 ±40 ±15 ±20 ±15 0.9 1.7 0.5 1.0
ET-D75LE30 ±40 ±15 ±20 ±15 0.6 1.2 0.4 0.7
ET-D75LE40 ±40 ±15 ±20 ±15 0.4 0.7 0.2 0.4
ET-D75LE50 ±22 ±15 ±8 ±8 2.0 4.9 1.2 2.9
Note
f When [GEOMETRY] is used, the focus of the entire screen may be lost as correction increases.
f Make the curved screen a circular arc shape with one part of a perfect circle removed.