Ge meniscus lens of thermal vision system for target-seeking and flight orientation
Application - on-board equipment.
Working wavelengths range - 3-5um.
Working angles range - 0-57 degrees.
Specification:
Part type
Meniscus lens
Material
Ge
Diameter, mm
36.0 (-0.05/-0.08)
Central thikness, mm
2.4 (+/-0.1)
EFL tolerance, %
+/-2
Surface quality, scr/dig
60/40
Surface figure, fringes
N<=2, delta N<=0.2 @633 nm
AR Coating (BBAR/BBAR type) @ 3.6-4.8 um
See the curve attached