TO46 is a transistor case package often used in telecommunication industry. GEM Optics provide high volume TO46 flat window, TO46 wedge window and TO46 ball lens window.

Direct Plating Copper (DPC) on Ceramic is a process used in the electronics industry to produce high-performance interconnects for a variety of applications.

Sapphire windows with AR coating and metallization widely used in Telecommunication devices, Medical instruments, Laser lighting, Laser instruments etc.