Chapter 2
Getting Started — Setting up
ENGLISH - 33
Vertical arc correction (viewed from the side) Horizontal arc correction (viewed from above)
Screen
Projection distance
Arc radius
Screen
Projection distance
Arc radius
Screen
Projection distance
Arc radius
Arc center
Screen
Projection distance
Arc radius
Arc center
r For standard zoom lens
Model No.
Only [KEYSTONE] used [KEYSTONE] and [CURVED CORRECTION] used
together
Only [CURVED
CORRECTION] used
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
PT-EZ590 ±25 ±30 ±20 ±15 1.4 2.9 0.7 1.6
PT-EW650,
PT-EW550
±35 ±35 ±35 ±35 1.0 1.0 1.0 1.0
PT-EX620,
PT-EX520
±35 ±35 ±35 ±35 0.8 0.9 0.8 0.9
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 specied
screen size.
For PT-EZ590, PT-EW650, PT-EW550
r When the image aspect ratio is 16:10
(Unit: m)
Lens type
Standard
zoom lens
Optional lens
Height position (H)
Short focus
zoom lens
Short focus
zoom lens
Long focus
zoom lens
Ultra long
focus zoom
lens
Projection Lens Model No. —
ET-ELW31
ET-ELW30 ET-ELT30 ET-ELT31
Standard zoom lens /
ET-ELW31 / ET-ELW30
/ ET-ELT30 / ET-ELT31
Throw ratio
*1
1.22-2.26:1 0.74-0.96:1
0.96-1.22:1
2.23-4.02:1
4.02-7.20:
1
Projected image size Projection distance (L)
Diagonal (SD)
Height
(SH)
Width
(SW)
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
Min.
(LW)
Max.
(LT)
1.02 (40") 0.538 0.862 1.03 1.94 0.62 0.81 0.78 1.03 1.86 3.42 3.53 6.35
-
0.05 ~ 0.59