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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LWIR thermal imaging lenses

145-168 of 194 models

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LS-SWL-01159 mm, F0.9 LWIR thermal lens 9 mmM17x0.751/5.6"F0.9-$279.00 Ships in 2-3 weeks
LS-SWL-01149.1 mm, F0.95 LWIR thermal lens 9.1 mmM28x0.51/1.7"F0.95-$279.00 Ships in 2-3 weeks
LS-SWL-01129.1 mm, F1.2 LWIR thermal lens 9.1 mmM20x0.51/1.7"F1.2-$279.00 Ships in 2-3 weeks
LS-SWL-01089 mm, F1, Flange-mount LWIR thermal lens 9 mmFlange mount1/2"F1-$279.00 Ships in 2-3 weeks
LS-SWL-00868.7 mm, F1.2 LWIR thermal lens 8.7 mmM34x0.51.2"F1.2-$269.00 Ships in 2-3 weeks
LS-SWL-00848.5 mm, F1.2 LWIR thermal lens 8.5 mmM14x0.51/1.7"F1.2-$269.00 Ships in 2-3 weeks
LS-SWL-00819 mm, F1 LWIR thermal lens, BFL 10 mm 9 mmM30x0.51/1.7"F1-$279.00 Ships in 2-3 weeks
LS-SWL-00669 mm, F1 LWIR thermal lens, BFL 7.5 mm 9 mmM20x0.51/3.2"F1-$279.00 Ships in 2-3 weeks
LS-SWL-00569 mm, F1 LWIR thermal lens, BFL 4.8 mm 9 mmM17x0.751/5.6"F1-$279.00 Ships in 2-3 weeks
LS-SWL-00539.1 mm, F1 LWIR thermal lens, BFL 7.5 mm 9.1 mmM20x0.51/1.7"F1-$279.00 Ships in 2-3 weeks
LS-SWL-00529.2 mm, F1.2 LWIR thermal lens 9.2 mmM15x0.51/1.7"F1.2-$279.00 Ships in 2-3 weeks
LS-SWL-01097.6 mm, F1, Flange-mount LWIR thermal lens 7.6 mmFlange mount1/2"F1-$249.00 Ships in 2-3 weeks
LS-SWL-00617.8 mm, F1.2 LWIR thermal lens 7.8 mmM30x0.52/3"F1.2-$259.00 Ships in 2-3 weeks
LS-SWL-01787 mm, F1.1 LWIR thermal lens 7 mmM34x0.751/1.8"F1.1-$249.00 Ships in 2-3 weeks
LS-SWL-01466.5 mm, F1.2 LWIR thermal lens 6.5 mmM32x1.51/2.7"F1.2-$239.00 Ships in 2-3 weeks
LS-SWL-00876.3 mm, F1.1 LWIR thermal lens 6.3 mmM20x0.51/3.2"F1.1-$239.00 Ships in 2-3 weeks
LS-SWL-00736.8 mm, F1.2 LWIR thermal lens, BFL 6.1 mm 6.8 mmM17x0.751/2"F1.2-$239.00 Ships in 2-3 weeks
LS-SWL-00656.8 mm, F1 LWIR thermal lens 6.8 mmM20x0.51/3.2"F1-$239.00 Ships in 2-3 weeks
LS-SWL-00557 mm, F1 LWIR thermal lens, BFL 4.8 mm 7 mmM17x0.751/5.6"F1-$249.00 Ships in 2-3 weeks
LS-SWL-00466.2 mm, F1 LWIR thermal lens 6.2 mmM34x0.51/2"F1-$239.00 Ships in 2-3 weeks
LS-SWL-00447 mm, F1 LWIR thermal lens, BFL 4 mm 7 mmM14x0.51/5.6"F1-$249.00 Ships in 2-3 weeks
LS-SWL-00426.8 mm, F1.2 LWIR thermal lens, BFL 4.2 mm 6.8 mmM17x0.751/3.6"F1.2-$239.00 Ships in 2-3 weeks
LS-SWL-00206.8 mm, F1.4 LWIR thermal lens 6.8 mmM25x0.51/2.7"F1.4-$239.00 Ships in 2-3 weeks
LS-SWL-00136 mm LWIR thermal lens 6 mm-1/1.2"-Thermal (LWIR)$229.00 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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