Sapphire window for under-water sensor
Application - to be installed at bathyscaphe to monitor continental shelf, ship's bottom, etc
Specification:
Material
Sapphire
Type
plano-plano window
Diameter, mm
77 (+0/-0.2)
Thickness, mm
6.0 (+/-0.2)
Surface quality, scr/dig
60/40
Surface figure, fringes
N<=5, delta N<=1 @633nm