This 55mm f/1.0 LWIR athermalized thermal imaging lens delivers >88% transmission and superior contrast for UAV, surveillance, and industrial thermography applications. Engineered with passive athermalization and a rugged 6061 aluminum housing, it maintains stable focus across -40°C to +80°C without any field adjustments required. Featuring an M34×0.5 thread mount, 17.35mm back focal distance, and IP67-equivalent sealing, this lens integrates seamlessly with standard uncooled thermal camera cores for reliable performance in harsh environments.
Focal Length: 55mm
F‑Number: 1.0
Operating Spectral Band: 8‑12um
Focus Mode: Fixed Focus
Athermalized: Yes
Image Plane Size: 9.84mm
Average Transmittance: ＞88%
Field of View: (H)8° ×(V)6.4° ×(D)10.2°
Relative Illumination: ＞98%
Resolution: ＞0.4
mrad Distortion: ＜0.2%
Back Focal Length(BFL): 10mm
Rear Focal Length: 17.35mm
Back Working Distance: 22mm
Imaging Range: 3m ~ ∞
Interface Type: M34×0.5‑6g
Detector: 640×512‑12um
Weight: 192g
Front‑element Coating: HD Coating
Sealing Protection: Front‑element IP67
Lens Housing Material: 6061 Aluminum
Operating Temperature: ‑40°C ~ 80°C
Storage Temperature: ‑40°C ~ 80°C
