Chapter 2
Getting Started — Setting up
42 - ENGLISH
r
Fixed-focus Lens (Model No.: ET-D75LE95, ET-D75LE90)
SH
SW
SD
SH
A1
L3
L4
A2
L1
L2
SW
Projected image
Screen
Screen
(Unit: m)
SH
Projected image height
SW
Projected image width
SD
Projected image size
L1
Projection distance (from the screen to the mirror reflection surface
*1
)
L2
Distance between the projector and the screen (from the screen to the tip of the lens)
L3
Distance between the projector and the screen (from the screen to the front surface of the projector)
L4
Distance between the projector and the screen (from the screen to the rear surface of the projector)
A1
Distance between the projector and the screen (from the screen bottom edge to the projector top)
A2
Distance between the projector and the screen (from the screen bottom edge to the projector bottom)
*1
The mirror reflection surface cannot be seen from the outside, because it is located inside the Fixed-focus Lens.
(Unit: m)
Distance between projector
and screen
Formula
ET-D75LE95
ET-D75LE90
L2
= L1
*1
+ 0.029
= L1
*1
+ 0.029
L3
= L1
*1
-
0.262
= L1
*1
-
0.247
L4
= L1
*1
- 1.332
= L1
*1
- 1.317
A2
= A1
*1
+ 0.419
= A1
*1
+ 0.419
*1
For details of calculating values, refer to “Formula for calculating the projection distance per projection lens” (
x
page 48).
Attention
f
Before setting up, read “Precautions for use” (
x
page 17).
Especially when the Fixed-focus Lens (Model No.: ET-D75LE95, ET-D75LE90) is used, install the projector so that its back plane is parallel
to the screen, making the projected image rectangular.
The vertical keystone distortion in moderate range can be corrected with the [POSITION] menu
→
[GEOMETRY]
→
[KEYSTONE]
→
[VERTICAL KEYSTONE] (
x
page 104) even after the projector is installed. For the range that can be corrected, refer to “[GEOMETRY]
projection range” (
x
page 43).
f
The geometric adjustment function cannot be used when the video signal in simultaneous format is input. When installing the projector,
follow the instructions below so that distortion does not occur in the projected image.
g
Use a flat screen.
g
Install the projector so that the front side of the projector is parallel to the screen.
g
Install the projector so that the image can be projected within the lens shift adjustment range.
f
Do not use the projector and the high-powered laser equipment in the same room. The DLP chips can be damaged if a laser beam hits the
projection lens surface.
f
The dimension of L4 is not the distance between the rear of the projector body and the wall, but the distance between the rear of the
projector body and the screen surface. Install the projector with 500 mm (19-11/16") or larger space between the rear of the projector body
and the wall or any object so that the ventilation is not obstructed.
When installing the projector in a confined space, provide air conditioning or ventilation separately. Exhaust heat may accumulate when the
ventilation is not enough, triggering the protection circuit of the projector.
