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Home / Thermal, SWIR & UV lenses / LWIR Thermal lenses
28.1 mm, F2.8 LWIR Thermal Lens (LS-UNNAMEDINTERNALLISTROW123)

Thermal, SWIR & UV lenses

28.1 mm, F2.8 LWIR Thermal Lens (LS-UNNAMEDINTERNALLISTROW123)

Model LS-UNNAMEDINTERNALLISTROW123

28.1 mm, F2.8 LWIR Thermal Lens. Long-wavelength infrared (LWIR) thermal lenses designed for commercial and military applications. At a glance: focal length 28.1 mm; sensor 2560×1440 2μm; aperture F2.8; mount M9.5x0.5; distortion 0.91%.

$339.00 USDIn stock · 2 available

Inventory updated Oct 14, 2026

0.12 kg shipping weight · Ships in 2-3 weeks
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Specifications

ModelLS-UNNAMEDINTERNALLISTROW123
Focal length28.1 mm
ApertureF2.8
Sensor2560×1440 2μm
Angle of view (deg)10.32(H)x5.84(V)
Distortion0.91%
Relative illumination0.66
Focus methodFixed
Mechanical back focal length4.5 mm
MountM9.5x0.5
Dimensionsdia. 14 x L21.33 mm
Weight<15g
SealingFront IP 67
Front lens coatingMulti-layer coating
Shipping weight (estimated)0.12 kg

Photo shows a representative model of this series; see the specifications for this model.

Applications

  • Commercial
  • Military
Complete the station

Drive the light from a light controller and pair it with a lens for your field of view and working distance.

Light controllers LensesSelection guide

Other sizes in the LWIR Thermal lenses series

ModelSizePriceAvailability
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LS-SLWIR9833 mm, F1.2 $379.00 5 in stockView
LS-LIR0019-0G35 mm, F1.1 $399.00 4 in stockView
LS-LIR0047-0G35 mm, F1.0, Flange-mount $399.00 3 in stockView
LS-SLWIR1935 mm, F1 $399.00 3 in stockView
LS-SLWIR3635 mm, F1 $399.00 2 in stockView
LS-SLWIR7735 mm, F1 $399.00 2 in stockView
LS-SLWIR9535 mm, F1 $399.00 5 in stockView
LS-SLWIRD135 mm, F1, Flange-mount $399.00 3 in stockView

See all 194 models in the LWIR Thermal lenses series