ZnSe protection meniscus lens for a land-based thermal vision system
Application - monitoring, seeking and tracking of various flying objects.
Specification:
Part type
Meniscus lens
Material
CVD-ZnSe
Diameter, mm
130 (-0.043/-0.143)
Central thikness, mm
12.1 (+/-0.02)
EFL tolerance, %
+/- 2
Surface quality, scr/dig
60/40
Surface figure, fringes
N<=2, delta N<=0.2 @633 nm (deltaN<=0.1 in central area of D33.5 mm)
AR Coating (BBAR/BBAR type) @ 3-5 um as well as for 0,55 um
See the curve attached