Chapter 2
Getting Started — Setting up
ENGLISH - 45
r
When the image aspect ratio is 4:3
(Unit: m)
Lens type
Zoom Lens
Projection lens Model No.
ET-D75LE6
ET-D75LE10 ET-D75LE20 ET-D75LE30 ET-D75LE40
ET-D75LE8
Throw ratio
*1
1.2-1.4:1
1.7-2.2:1
2.1-3.1:1
3.1-6.0:1
5.9-9.5:1
9.5-17.8:1
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)
Min.
(LW)
Max.
(LT)
1.78 (70")
1.067
1.422
1.66
1.99
2.33
3.01
3.00
4.37
4.34
8.46
8.37 13.43 13.24 25.18
2.03 (80")
1.219
1.626
1.91
2.28
2.67
3.46
3.44
5.01
4.98
9.69
9.59 15.37 15.19 28.83
2.29 (90")
1.372
1.829
2.16
2.58
3.02
3.90
3.89
5.65
5.61 10.93 10.80 17.32 17.14 32.47
2.54 (100")
1.524
2.032
2.40
2.87
3.36
4.35
4.33
6.29
6.25 12.16 12.02 19.26 19.08 36.12
3.05 (120")
1.829
2.438
2.89
3.46
4.05
5.24
5.21
7.57
7.52 14.63 14.46 23.14 22.98 43.42
3.81 (150")
2.286
3.048
3.63
4.34
5.08
6.57
6.53
9.49
9.43 18.33 18.11 28.97 28.82 54.36
5.08 (200")
3.048
4.064
4.86
5.82
6.81
8.80
8.74 12.70 12.61 24.50 24.20 38.68 38.56 72.60
6.35 (250")
3.810
5.080
6.09
7.29
8.53
11.03 10.94 15.90 15.79 30.67 30.29 48.39 48.29 90.84
7.62 (300")
4.572
6.096
7.32
8.76 10.25 13.26 13.15 19.11 18.97 36.84 36.38 58.10 58.03 109.08
8.89 (350")
5.334
7.112
8.55 10.23 11.98 15.48 15.35 22.31 22.15 43.00 42.47 67.81 67.76 127.32
10.16 (400")
6.096
8.128
9.78
11.71 13.70 17.71 17.56 25.51 25.33 49.17 48.56 77.52 77.50 145.57
12.70 (500")
7.620
10.160
12.24 14.65 17.15 22.16 21.96 31.92 31.69 61.51 60.75 96.94 96.97 182.05
15.24 (600")
9.144
12.192
14.69 17.60 20.59 26.62 26.37 38.33 38.06 73.85 72.93 116.36 116.44 218.53
25.40 (1000")
15.240
20.320
24.53 29.38 34.38 44.44 44.01 63.96 63.50 123.20 121.65 194.04 194.32
―
Lens type
Fixed-focus Lens
Projection lens Model No.
ET-D75LE90
*2
ET-D75LE50
Throw ratio
*1
0.47:1
0.9:1
Projected image size
Projection
distance
(L1)
Distance between projector and
screen
Projection
distance (L)
Diagonal (SD)
Height
(SH)
Width (SW)
(L4)
(A1)
Fixed
1.78 (70")
1.067
1.422
―
―
―
1.24
2.03 (80")
1.219
1.626
―
―
―
1.43
2.29 (90")
1.372
1.829
―
―
―
1.61
2.54 (100")
1.524
2.032
―
―
―
1.80
3.05 (120")
1.829
2.438
1.14
0.14
0.32 - 0.49
2.17
3.81 (150")
2.286
3.048
1.42
0.42
0.43 - 0.65
2.73
5.08 (200")
3.048
4.064
1.89
0.89
0.62 - 0.91
3.67
6.35 (250")
3.810
5.080
2.36
1.35
0.81 - 1.16
4.61
7.62 (300")
4.572
6.096
2.82
1.82
0.99 - 1.42
5.54
8.89 (350")
5.334
7.112
3.29
2.29
1.18 - 1.68
6.48
10.16 (400")
6.096
8.128
3.76
2.75
1.37 - 1.94
7.41
12.70 (500")
7.620
10.160
4.69
3.69
1.74 - 2.46
9.28
15.24 (600")
9.144
12.192
5.62
4.62
2.11 - 2.97
11.15
25.40 (1000")
15.240
20.320
―
―
―
18.64
*1 The throw ratio is based on the value during projection with the projected image size of 3.81 m (150").
*2 When the Fixed-focus Lens (Model No.: ET-D75LE90) is attached, the projection relation between the screen and the projector differs from that of
other lenses. Refer to “For the Fixed-focus Lens (Model No.: ET-D75LE90)” (
x
page 40) for details.
Formula for calculating the projection distance per projection lens
To use a projected image size not listed in this manual, check the projected image size SD (m) and use the
respective formula to calculate projection distance.
The unit of all the formulae is m. (Values obtained by the following calculation formulae contain a slight error.)
When calculating a projection distance using image size designation (value in inches), multiply the value in inches
by 0.0254 and substitute it into SD in the formula for calculating the projection distance.
r
Zoom Lens
Projection lens Model No.
Throw ratio
Aspect ratio
Projection distance (L) formula
Min. (LW)
Max. (LT)
ET-D75LE6
1.0 - 1.2:1
16:10
= 0.8549 x SD
-
0.0566
= 1.0242 x SD
-
0.0736
1.0 - 1.2:1
16:9
= 0.8786 x SD
-
0.0566
= 1.0527 x SD
-
0.0736
1.2 - 1.4:1
4:3
= 0.9679 x SD
-
0.0566
= 1.1596 x SD
-
0.0736
ET-D75LE10
1.4 - 1.8:1
16:10
= 1.1985 x SD
-
0.0857
= 1.5490 x SD
-
0.1085
1.4 - 1.8:1
16:9
= 1.2318 x SD
-
0.0857
= 1.5921 x SD
-
0.1085
1.7 - 2.2:1
4:3
= 1.3569 x SD
-
0.0857
= 1.7538 x SD
-
0.1085
ET-D75LE20
1.8 - 2.6:1
16:10
= 1.5334 x SD
-
0.0832
= 2.2280 x SD
-
0.1162
1.8 - 2.6:1
16:9
= 1.5760 x SD
-
0.0832
= 2.2900 x SD
-
0.1162
2.1 - 3.1:1
4:3
= 1.7361 x SD
-
0.0832
= 2.5226 x SD
-
0.1162
