Body temperature measurement lens 7.5 mm

LWIR Lens F7,5 #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 7,50
Back focal length, mm (including 1 mm germanium window) 9,50
Optical system length, mm 42,27
Operating temperature range, oC -10 +40
Maximum vignetting ,% absent
Field of view, 2ω, deg 90,0
Linear field, 2y', mm 13,6
Maximum distortion,% 10,02
MTF for ω = 0 at 30 lp/mm 0,48
MTF for ω = 25 at 30 lp/mm 0,42
MTF for ω = 45 at 30 lp/mm 0,28

MTF @20⁰C

MTF @40⁰C

MTF @0⁰C

MTF @-10⁰C

Field curvature and distortion

Relative illumination