m
100.00
50.00
25.00
10.00
5.00
1.20
D
→
ft.
327.90
164.00
82.00
32.80
16.40
3.90
D
→
in.
20.65
10.31
5.16
2.06
1.03
0.25
IFOV
80°
Figure 14.6
F-number and close focus limits for various lenses
80°
65°
45°
24°
12°
7°
Lens
→
0.15
0.2
0.1
0.3
1.2
4
Close focus limit (m)
0.49
0.64
0.32
0.98
3.93
13.11
Close focus limit (ft.)
1.0
1.5
1.0
1.0
1.0
1.0
f-number
14.10 – Relationship between fields of view and distance
Publ. No. 1 557 536 Rev. a35 – ENGLISH (EN) – January 20, 2004
71
Содержание ThermaCAM P20
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