8x projection lens (5x, 8x, 12x, 15x, 20x lenses have been developed)

Parameter Value
Spectral range, μm 2,5 – 4,8
Main wavelength (λ0), μm 3,5
Numerical aperture in object space, units 0,65
Linear field in object space, 2y, mm 2,25
Linear magnification 8x
Front working length, mm 15,8
Optical system length, mm 56,5
Maximum distortion,% <0,1

MTF

Spot Diagram