Hard-to-find optics line offers wide variety of odd-sized sapphire windows and substrates with different crystallographic orientations. Optics line includes round, square, rectangular, flat- and wedge-shaped windows, lenses, and mirrors; many with critically tight specifications. Fabricated from sapphire, BaF2, CaF2, fused- and crystalline-quartz, laser glasses, ZnSe, silicon, and germanium, they are typically priced 20% less than custom ordered optics.