Nec GT2000 Manuel d'utilisateur Page 22

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E-22
Standard Zoom Lens (Wide)
α
β (sin= α)
γ (cos= α)
Screen Size
H–Width
4 : 3 Diagonal
A
B
C
F
Degree
inch
mm
inch
mm
mm
inch
mm
inch
mm
inch
mm
inch
9.0
0.16
0.99
32
812.8
40
1016
1557
61.3
329
13.0
1537
60.5
-25
-1.0
8.9
0.15
0.99
48
1219.2
60
1524
2377
93.6
451
17.8
2349
92.5
6
0.2
8.8
0.15
0.99
56
1422.4
70
1778
2787
109.7
512
20.2
2754
108.4
21
0.8
8.8
0.15
0.99
64
1625.6
80
2032
3197
125.9
573
22.6
3160
124.4
36
1.4
8.8
0.15
0.99
72
1828.8
90
2286
3608
142.0
634
25.0
3566
140.4
51
2.0
8.7
0.15
0.99
80
2032
100
2540
4018
158.2
695
27.4
3971
156.4
67
2.6
8.7
0.15
0.99
96
2438.4
120
3048
4838
190.5
818
32.2
4783
188.3
97
3.8
8.7
0.15
0.99
120
3048
150
3810
6069
238.9
1001
39.4
6000
236.2
142
5.6
8.7
0.15
0.99
144
3657.6
180
4572
7300
287.4
1184
46.6
7217
284.1
188
7.4
8.6
0.15
0.99
160
4064
200
5080
8120
319.7
1306
51.4
8028
316.1
218
8.6
8.6
0.15
0.99
192
4876.8
240
6096
9761
384.3
1550
61.0
9651
380.0
279
11.0
8.6
0.15
0.99
216
5486.4
270
6858
10992
432.76
1733
68.2
10868
427.9
324
12.8
Standard Zoom Lens (Tele)
8.6
0.15
0.99
240
6096
300
7620
12223
481.2
1916
75.4
12085
475.8
370
14.6
α
β (sin= α)
γ (cos= α)
Screen Size
H–Width
4 : 3 Diagonal
A
B
C
F
Degree
inch
mm
inch
mm
mm
inch
mm
inch
mm
inch
mm
inch
7.0
0.12
0.99
32
812.8
40
1016
2013
79.3
329
13.0
1999
78.7
-25
-1.0
6.8
0.12
0.99
48
1219.2
60
1524
3075
121.1
451
17.8
3053
120.2
6
0.2
6.8
0.12
0.99
56
1422.4
70
1778
3606
142.0
512
20.2
3581
141.0
21
0.8
6.8
0.12
0.99
64
1625.6
80
2032
4137
162.9
573
22.6
4108
161.7
36
1.4
6.8
0.12
0.99
72
1828.8
90
2286
4668
183.8
634
25.0
4635
182.5
51
2.0
6.7
0.12
0.99
80
2032
100
2540
5199
204.7
695
27.4
5163
203.3
67
2.6
6.7
0.12
0.99
96
2438.4
120
3048
6260
246.5
818
32.2
6217
244.8
97
3.8
6.7
0.12
0.99
120
3048
150
3810
7853
309.2
1001
39.4
7800
307.1
142
5.6
6.7
0.12
0.99
144
3657.6
180
4572
9446
371.9
1184
46.6
9382
369.4
188
7.4
6.7
0.12
0.99
160
4064
200
5080
10508
413.7
1306
51.4
10436
410.9
218
8.6
6.7
0.12
0.99
192
4876.8
240
6096
12631
497.3
1550
61.0
12546
493.9
279
11.0
6.7
0.12
0.99
216
5486.4
270
6858
14224
560.0
1733
68.2
14128
556.2
324
12.8
6.6
0.12
0.99
240
6096
300
7620
15817
622.7
1916
75.4
15710
618.5
370
14.6
Formulas (mm)
H mm=Horizontal Screen Width
C = [(53.22H) / 26.6]– 85.4
α= Tan
-1
(82H) / (26.62C)
A =C / cosα
B= 85.2 + [(82H) / 26.6]
F = (0.3752H) – B
Formulas (inch)
H inch=Horizontal Screen Width
C = [(50.72H)– 85.4] / 25.4
α= Tan
-1
(82H) / (26.62C)
A =C / cosα
B = [85.2 + (7.62H )] / 25.4
F = (0.3752H )– B
Formulas (mm)
H mm=Horizontal Screen Width
C = [(53.22H / 26.6) – 85.4]21.3
α= Tan
-1
(82H) / (26.62C)
A =C / cosα
B = 85.2 + [(82H )/ 26.6]
F = (0.3752H) – B
Formulas (inch)
H inch=Horizontal Screen Width
C = {[(50.72H)– 85.4]21.3} / 25.4
α= Tan
-1
(82H) / (26.62C)
A =C / cosα
B= [85.2 + (7.62H )] / 25.4
F = (0.3752H) – B
A : Distance between the lens and the screen center
B : Vertical distance between the projector bottom and the screen center
C : Horizontal throw distance between the screen surface and the lens
F : Vertical distance between the projector bottom and the top of image
A : Distance between the lens and the screen center
B : Vertical distance between the projector bottom and the screen center
C : Horizontal throw distance between the screen surface and the lens
F : Vertical distance between the projector bottom and the top of image
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