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Vertical arc correction (viewed from the side)
Screen
Arc center
Screen
r For standard zoom lens
Only [KEYSTONE] used
Vertical
Model No.
keystone
correction
angle α (°)
PT-EZ590
±25
PT-EW650,
±35
PT-EW550
PT-EX620,
±35
PT-EX520
Note
f When [SCREEN ADJUSTMENT] 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.
Projection distance per projection lens
A ± 5% error in listed projection distances may occur.
In addition, when [SCREEN ADJUSTMENT] is used, distance is corrected to become smaller than the specified
screen size.
For PT-EZ590, PT-EW650, PT-EW550
r When the image aspect ratio is 16:10
Lens type
Projection Lens Model No.
Throw ratio
*1
Projected image size
Height
Width
Diagonal (SD)
(SH)
(SW)
1.02 (40")
0.538
0.862
Chapter 2 Getting Started — Setting up
Projection distance
Arc radius
Projection distance
Arc radius
[KEYSTONE] and [CURVED CORRECTION] used
Horizontal
Vertical
Horizontal
keystone
keystone
correction
correction
correction
angle β (°)
angle α (°)
angle β (°)
±30
±20
±35
±35
±35
±35
Standard
Short focus
zoom lens
zoom lens
—
ET-ELW31
1.22-2.26:1
0.74-0.96:1
Projection distance (L)
Min.
Max.
Min.
Max.
(LW)
(LT)
(LW)
(LT)
1.03
1.94
0.62
0.81
Horizontal arc correction (viewed from above)
Screen
Arc center
Screen
together
keystone
Min. value
Min. value
of R2/L2
±15
1.4
±35
1.0
±35
0.8
Optional lens
Short focus
Long focus
zoom lens
zoom lens
ET-ELW30
ET-ELT30
0.96-1.22:1
2.23-4.02:1
Min.
Max.
Min.
Max.
(LW)
(LT)
(LW)
(LT)
0.78
1.03
1.86
3.42
Projection distance
Arc radius
Projection distance
Arc radius
Only [CURVED
CORRECTION] used
Min. value
Min. value
of R3/L3
of R2/L2
of R3/L3
2.9
0.7
1.0
1.0
0.9
0.8
Ultra long
Height position (H)
focus zoom
lens
ET-ELT31
4.02-7.20:1
Standard zoom lens /
ET-ELW31 / ET-ELW30
Min.
Max.
/ ET-ELT30 / ET-ELT31
(LW)
(LT)
3.53
6.35
-0.05 ~ 0.59
ENGLISH - 33
1.6
1.0
0.9
(Unit: m)
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