Meller Optics has introduced custom fabricated sapphire windows--18-in. dia. X 0.4-in. thick--for use in military navigation and targeting systems. This size provides transmitted wavefront of 0.4-wave, parallelism to 2 arc-sec. and a 70:1 aspect ratio. They are designed for use as pilot, instrument, and weapon systems viewports due to their durability and high accuracy, according to the company. Featuring Moh surface hardness for optimum abrasion resistance, they have surface finishes of ...


You must have an Aviation Week Intelligence Network (AWIN) account or subscribe to this Market Briefing to access "TOUGH WINDOWS".


Current Aviation Week Intelligence Network (AWIN) enterprise and individual members: please go to for access.


Not currently a subscriber? Click on the "Learn More" button below to view subscription offers.

Already registered? here.