244Alvium USB Cameras User Guide V4.6.1
Lenses: Focal length vs. field of view
Alvium 1800 U-130 VSWIR
Values for 1800 U-130 VSWIR cameras with Type 1/2 (8.2 mm diagonal) sensors:
Alvium 1800 U-131m/c
Values for 1800 U-131m/c cameras with Type 1/1.8 (8.7 mm diagonal) sensors:
Focal length [mm]
Field of view (H × V [mm])
Object distance = 500 mm Object distance = 1000 mm
5 671 × 560 1348 × 1125
6 558 × 466 1122 × 937
8 417 × 348 840 × 701
12 275 × 230 558 × 466
16 205 × 171 417 × 348
25 129 × 107 264 × 221
35 90 × 75 187 × 156
50 61 × 51 129 × 107
Table 118: Focal length versus field of view for Alvium 1800 U-130 VSWIR
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm Object distance = 1000 mm
4.8 700 × 560 1407 × 1125
6 559 × 447 1124 × 899
8 417 × 334 841 × 673
12 276 × 221 559 × 447
16 205 × 164 417 × 334
25 129 × 103 265 × 212
35 90 × 72 187 × 150
50 61 × 49 129 × 103
Table 119: Focal length versus field of view for Alvium 1800 U-131m/c
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