Lenses

LWIR thermal imaging lenses

Lenses for the 8 to 14 µm band

Long-wave infrared lenses for thermal cameras and uncooled detector cores. Compare focal length, F-number, detector format, mount and back focal length.

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194 models Configure a systemAll lenses
LWIR thermal imaging lenses

121-144 of 194 models

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LS-SWL-009713 mm, F0.9 LWIR thermal lens, BFL 6.1 mm 13 mmM17x0.751/3.2"F0.9$329.00 Ships in 2-3 weeks
LS-SWL-008813 mm, F1 LWIR thermal lens, BFL 6 mm, dia. 21 x L15 mm 13 mmM17x0.751/5.6"F1$329.00 Ships in 2-3 weeks
LS-SWL-006913 mm, F1 LWIR thermal lens, BFL 7.5 mm, dia. 22 x L16 mm 13 mmM20x0.751/2"F1$329.00 Ships in 2-3 weeks
LS-SWL-006213 mm, F1 LWIR thermal lens, BFL 10 mm, dia. 34.5 x L28.3 mm 13 mmM30x0.51/1.2"F1$329.00 Ships in 2-3 weeks
LS-SWL-004713 mm, F1 LWIR thermal lens, BFL 7.5 mm, dia. 26 x L13.5 mm 13 mmM25x0.51/2"F1$329.00 Ships in 2-3 weeks
LS-SWL-004513.5 mm, F1 LWIR thermal lens 13.5 mmM20x0.51/1.7"F1$339.00 Ships in 2-3 weeks
LS-SWL-003413 mm, F1 LWIR thermal lens, BFL 9 mm, dia. 28.5 x L18 mm 13 mmM25x0.51/2"F1$329.00 Ships in 2-3 weeks
LS-SWL-002313 mm, F1 LWIR thermal lens, BFL 6.5 mm, dia. 25 x L28.5 mm 13 mmM24x0.51/1.2"F1$329.00 Ships in 2-3 weeks
LS-SWL-001613 mm, F1 LWIR thermal lens, BFL 7.33 mm 13 mmM25x0.751/1.7"F1$329.00 Ships in 2-3 weeks
LS-SWL-015112 mm, F1 LWIR thermal lens 12 mmM19x0.51/3"F1$319.00 Ships in 2-3 weeks
LS-SWL-009611.7 mm, F0.7 LWIR thermal lens 11.7 mmM26x0.51/1.7"F0.7$309.00 Ships in 2-3 weeks
LS-SWL-010510.7 mm, F1 LWIR thermal lens 10.7 mmM34x0.51.1"F1$299.00 Ships in 2-3 weeks
LS-SWL-009910.9 mm, F0.7 LWIR thermal lens 10.9 mmM26x0.51/1.7"F0.7$299.00 Ships in 2-3 weeks
LS-SWL-009311.5 mm, F1.2 LWIR thermal lens 11.5 mmM19x0.51/1.7"F1.2$309.00 Ships in 2-3 weeks
LS-SWL-014410 mm, F1 LWIR thermal lens, BFL 6.44 mm, dia. 31 x L26.22 mm 10 mmM45x1.01/2"F1$289.00 Ships in 2-3 weeks
LS-SWL-010110 mm, F1, M4x0.5-mount LWIR thermal lens 10 mmM4x0.51/5.6"F1$289.00 Ships in 2-3 weeks
LS-SWL-008510 mm, F1 LWIR thermal lens, BFL 4.5 mm, dia. 28 x L17 mm 10 mmM25x0.51/2"F1$289.00 Ships in 2-3 weeks
LS-SWL-007810 mm, F1 LWIR thermal lens, BFL 4.5 mm, dia. 28 x L17 mm 10 mmM25x0.51/2"F1$289.00 Ships in 2-3 weeks
LS-SWL-00099.7 mm, F1 LWIR thermal lens 9.7 mmM20x0.51/1.8"F1$289.00 Ships in 2-3 weeks
LS-SWL-000710 mm, F1 LWIR thermal lens, BFL 13.5 mm, dia. 31.2 x L39.55 mm 10 mmM34x0.751/1.2"F1$289.00 Ships in 2-3 weeks
LS-SWL-01299.1 mm, F1.1 LWIR thermal lens 9.1 mmM18x0.51/1.7"F1.1$279.00 Ships in 2-3 weeks
LS-SWL-01249.1 mm, F1 LWIR thermal lens, BFL 2.3 mm 9.1 mmM19.8x0.51/1.7"F1$279.00 Ships in 2-3 weeks
LS-SWL-01219.1 mm, F1 LWIR thermal lens, BFL 6 mm 9.1 mmM18x0.51/1.7"F1$279.00 Ships in 2-3 weeks
LS-SWL-01169.1 mm, F0.95, Flange-mount LWIR thermal lens 9.1 mmFlange mount1/1.7"F0.95$279.00 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.

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