ENGLISH
– 21
Getting Started
Projected range using geometric adjustment
z
VERTICAL KEYSTONE HORIZONTAL KEYSTONE
Side View Top View
Screen
Screen
VERTICAL ARC HORIZONTAL ARC
Side View Top View
L2
R2
Screen
L2 : Projection distance
R2 : Radius of the circle
L2
R2
Screen
L2 : Projection distance
R2 : Radius of the circle
Side View Top View
L3
R3
Center of the
circle
Screen
L3 : Projection distance
R3 : Radius of the circle
L3
R3
Center of the
circle
Screen
L3 : Projection distance
R3 : Radius of the circle
Lens
Keystone correction only
When using arc and keystone correction together Arc correction only
Vertical
Keystone
Correction
Angle ( )
Horizontal
Keystone
Correction
Angle ( )
Vertical
Keystone
Correction
Angle ( )
Horizontal
Keystone
Correction
Angle ( )
R2/L2
minimum
value
R3/L3
minimum
value
R2/L2
minimum
value
R3/L3
minimum
value
ET-D75LE1 40 15 5 5 1.6 3.2 0.8 1.6
ET-D75LE2 40 15 5 5 1.2 2.4 0.6 1.2
ET-D75LE3 40 15 10 10 0.8 1.6 0.4 0.8
ET-D75LE4 40 15 10 15 0.6 1.0 0.3 0.5
ET-D75LE5 22 15 5 5 3.0 6.0 1.5 3.0
ET-D75LE6 28 10 5 5 2.4 4.8 1.2 2.4
ET-D75LE8 40 15 10 15 0.4 0.8 0.2 0.4
Note
When using geometric adjustment, if the amount of compensation is too great, excessive blurring may result.•
The curved screens illustrated are simply sections of a full circle.•
