NEC MT830 - Manual (Page 20)

E-19
Standard Zoom Lens (Wide)
Standard Zoom Lens (Tele)
α
β (sin= α )
γ (cos= α )
Screen Size
H–Width
4 : 3 Diagonal
A
B
C
F
C/H-Width
magnification
Degree
inch
inch
mm
inch
mm
inch
mm
inch
mm
inch
9.02
0.15671
0.98764
32
40
1572
61.9
332
13.1
1552
61.11
-27
-1.0
1.91
30.79
8.86
0.15395
0.98808
48
60
2400
94.5
455
17.9
2371
93.36
3
0.1
1.94
46.18
8.81
0.15318
0.98820
56
70
2814
110.8
516
20.3
2781
109.48
17
0.7
1.95
53.88
8.78
0.15260
0.98829
64
80
3228
127.1
578
22.7
3190
125.60
32
1.3
1.96
61.58
8.75
0.15216
0.98836
72
90
3642
143.4
639
25.2
3600
141.72
47
1.8
1.97
69.27
8.73
0.15181
0.98841
80
100
4056
159.7
701
27.6
4009
157.84
62
2.4
1.97
76.97
8.70
0.15128
0.98849
96
120
4884
192.3
824
32.4
4828
190.08
91
3.6
1.98
92.36
8.67
0.15076
0.98857
120
150
6127
241.2
1009
39.7
6057
238.45
135
5.3
1.99
115.45
8.65
0.15041
0.98862
144
180
7369
290.1
1194
47.0
7285
286.81
179
7.0
1.99
138.55
8.64
0.15024
0.98865
160
200
8197
322.7
1317
51.8
8104
319.05
208
8.2
1.99
153.94
8.63
0.14998
0.98869
192
240
9853
387.9
1563
61.5
9742
383.54
267
10.5
2.00
184.73
8.62
0.14984
0.98871
216
270
11096
436.8
1748
68.8
10970
431.90
311
12.2
2.00
207.82
8.61
0.14972
0.98873
240
300
12338
485.7
1932
76.1
12199
480.27
355
14.0
2.00
230.91
α
β
(sin=
α
)
γ
(cos=
α
)
Screen Size
H–Width
4 : 3 Diagonal
A
B
C
F
C/H-Width
magnification
Degree
inch
inch
mm
inch
mm
inch
mm
inch
mm
inch
6.93
0.12065
0.99269
32
40
2041
80.4
332
13.1
2027
79.78
-27
-1.0
2.49
30.79
6.81
0.11850
0.99295
48
60
3118
122.7
455
17.9
3096
121.88
3
0.1
2.54
46.18
6.77
0.11790
0.99302
56
70
3656
143.9
516
20.3
3630
142.92
17
0.7
2.55
53.88
6.75
0.11746
0.99308
64
80
4194
165.1
578
22.7
4165
163.97
32
1.3
2.56
61.58
6.73
0.11711
0.99312
72
90
4732
186.3
639
25.2
4699
185.02
47
1.8
2.57
69.27
6.71
0.11684
0.99315
80
100
5270
207.5
701
27.6
5234
206.06
62
2.4
2.58
76.97
6.69
0.11643
0.99320
96
120
6346
249.9
824
32.4
6303
248.15
91
3.6
2.58
92.36
6.66
0.11603
0.99325
120
150
7961
313.4
1009
39.7
7907
311.29
135
5.3
2.59
115.45
6.65
0.11576
0.99328
144
180
9575
377.0
1194
47.0
9511
374.43
179
7.0
2.60
138.55
6.64
0.11562
0.99329
160
200
10651
419.3
1317
51.8
10580
416.52
208
8.2
2.60
153.94
6.63
0.11542
0.99332
192
240
12804
504.1
1563
61.5
12718
500.71
267
10.5
2.61
184.73
6.62
0.11531
0.99333
216
270
14418
567.6
1748
68.8
14322
563.85
311
12.2
2.61
207.82
6.62
0.11522
0.99334
240
300
16032
631.2
1932
76.1
15925
626.99
355
14.0
2.61
230.91