Anti-reflective Coated Sapphire Windows Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration. Sapphire windows will exceed all other optical materials in harsh environments, providing a better barrier between elements. Creator Optics can make various Sapphire Windows according to special requirements and drawings. All of these Sapphire Windows are available with high-precision polished surface, flatness and parallelism. • Kyropoulos, Heat Exchange Methos, Edge-Defined Film-Fed Growth synthetic sapphire crystal • C-cut, A-cut, random orientation • Circular / Round Parallel Plane window • Rectangular / Square Parallel Plane window • Circular or Rectangular Wedge window • Elliptic Parallel Plane Window • Step and Conical Parallel Plane window • Special Cutting Window, O-ring groove window