Thermalized lens

 Technical Parameters
PART NAMEFocal lengthF #          Waveband    Detector      Weight
 LWIR-Athermalized lens25mm / F0.825 mm0.88 ~ 12 μm640 × 480, 17 μm86 G
 LWIR-Athermalized lens 2100D / F1.0 lens100mm18~12μm640×480, 17μm860 G
 LWIR-Athermalized lens 35mm / F1.035 mm18~12μm640 × 480,17μm ; 384 × 288, 17 µm164 G
 LWIR-Athermalized lens25mm / F1.0 25 mm18~12μm640 × 480,17μm ; 384 × 288, 17 µm75 G