Body temperature measurement lens 15 mm

LWIR Lens F15 #1.0 Specifications

Parameter Value
Aperture ratio 1:1,0
Spectral range, μm 8 - 12
Main wavelength (λ0), μm 10
Focal length at the main wavelength (λ0), mm 15,0
Back focal length, mm (including 1 mm germanium window) 8,50
Optical system length, mm 26,71
Operating temperature range, oC -20 +60
Maximum vignetting ,% absent
Field of view, 2ω, deg 50,0
Linear field, 2y', mm 13,5
Maximum distortion,% 5,0
MTF for ω = 0 at 30 lp/mm 0,57
MTF for ω = 25 at 30 lp/mm 0,49
MTF for ω = 45 at 30 lp/mm 0,46

MTF @20⁰C

MTF @40⁰C

MTF @60⁰C

MTF @0⁰C

MTF @-20⁰C

Field curvature and distortion