COE Optics offers high-quality UV & IR grade sapphire windows with low scattering and birefringence, ideal for harsh environments. These defect-free windows, made from synthetic corundum, achieve T >70%@190nm and T >85%@4.3μm. Used in watches, electro-optics, aerospace, biomedical fields, LEDs, and barcode scanners, they are highly durable and reliable.