2 mm, F1.3 LWIR thermal lens
LS-SWL-0132
- Focal length 2 mm
- Mount M7x0.25
- Sensor 1/5.6"
$179.00
Ships in 2-3 weeks
Lenses
LWIR thermal imaging lenses
Lenses for the 8 to 14 µm bandLong-wave infrared lenses for thermal cameras and uncooled detector cores. Compare focal length, F-number, detector format, mount and back focal length.
Products
2.45 mm, F1, M25x1-mount LWIR thermal lens
LS-SWL-0012
- Focal length 2.45 mm
- Mount M25x1
- Sensor 1/2"
$189.00
Ships in 2-3 weeks
| Compare | |||||||
|---|---|---|---|---|---|---|---|
 LS-SWL-01322 mm, F1.3 LWIR thermal lens
| 2 mm | M7x0.25 | 1/5.6" | F1.3 | $179.00 | Ships in 2-3 weeks | |
 LS-SWL-00122.45 mm, F1, M25x1-mount LWIR thermal lens
| 2.45 mm | M25x1 | 1/2" | F1 | $189.00 | Ships in 2-3 weeks |
Lenses for the 8 to 14 µm band
Thermal imaging in the long-wave infrared uses wavelengths of roughly 8 to 14 µm, which optical glass does not transmit, so these lenses are made from infrared materials. Uncooled detectors need a lot of energy, which is why thermal lenses have low F-numbers, and the lens is matched to the detector by its pixel pitch and pixel count.
- Calculate the detector size from pixel count and pixel pitch and compare it with the format the lens covers.
- Choose the focal length from the field of view; compare the F-number, since a lower one gives the detector more signal.
- Check the mount thread and the back focal length against the camera core, and whether the model is fixed focus, manual focus or athermalised.