Lenses and Filters
For close range measurements (<50m for Classical HySpex and <20m for Mjolnir cameras), a close-up lens is required.
To maintain the optical performance of the cameras, dedicated close-up lenses are required. These are easily mounted on the HySpex camera.
For Mjolnir, 1m working distance/20° FOV lenses are available.
For HySpex Classic, close-up lenses are available for a working distance of a few cm, giving up to 24µm resolution for VNIR-1800, 53µm for SWIR-384 and 32µm for SWIR-640 , and up to 50m working distance. The main lens specifications are given in the table below for VNIR-1800, SWIR-384 and SWIR-640:
VNIR-1800
Working distance
Linear FOV [mm]
Pixel size across- / along-track [mm]
0.3 m
86
0.05/0.1
1 m
288
0.16/0.32
3 m
864
0.48/0.96
9-13 m
2592 – 3744
1.44-2.08/2.88-4.16
13-23 m
3744 – 6624
2.08-3.68/4.16-7.36
23-50 m
6624 - 14400
3.68-8/7.36-16
SWIR-384
Working distance
Linear FOV [mm]
Pixel size across- / along-track [mm]
0.3 m
84
0.22/0.22
1 m
280
0.73/0.73
3 m
841
2.19/2.19
9-50 m
2523 - 14016
6.57-36.5 / 6.57-36.5
SWIR-640
Working distance
Linear FOV [mm]
Pixel size across- / along-track [mm]
0.3 m
84
0.13/0.13
1 m
280
0.44/0.44
3 m
841
1.31/1.31
9-50 m
2523 - 14016
3.94-21.9 / 3.94-21.9
Cameras that utilize field of view expanders
Turnkey solutions that utilize field of view expanders
Airborne
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