Sapphire has applications where its strength and durability are required. This scratch resistant transparent material is applied in aerospace optical windows, including Forward Looking Infra-Red (FLIR) and laser range finding systems. Sapphire has been used in a sapphire transparent armor system that achieves a 50% lighter and 50% thinner system than a glass-only system with the equivalent ballistic and blast resistant performance. Semiconductor processing is another sector that used sapphire sheets. Other applications covered are furnace viewports, gas and oil analysis, barcode readers and IR analytical devices.