Circular Sapphire Windows for aerospace, medical, and industrial applications
  • Extremely hard, strong and wear resistant
  • Excellent thermal conductivity/heat resistance
  • Exceptionalchemical stability
  • Excellent transmission bandwidths (UV to IR)
  • Blank substrates, AR-coated pieces, and precision windows are available
  • Circular sapphire windows discover large use in sectors such as aerospace, defense, clinical, and semiconductor production. They act as protective covers for delicate optical components and are vital in high-pressure and high-temperature atmospheres where conventional glass home windows would certainly not suffice. Furthermore, they are utilized in scientific tools like spectrometers, cams, and lasers because of their remarkable optical quality and resilience.


    Circular Windows Diagram

    Specifications of Circular Sapphire Windows

    Material Sapphire (Al2O3)
    Diameter 2mm ~ 600mm
    Diameter Tolerance +/-0.02 mm
    Thickness 0.1mm ~ 100mm
    Thickness Tolerance +/-0.01 mm
    Surface Quality 60/40, 40/20 or 20/10 S/D
    Parallelism 30 arc sec
    Chamfer < 0.2 mm x 45°
    Coating No coating or custom coating request

    Price list and specification index

    If need other specifications and quantities products, please contact us(
    Part Number Dia. Thickness (mm) Coating Price
    Cir-Win-Sapphire-001 Φ3.00 mm 1.00 mm Uncoated $35.00
    Cir-Win-Sapphire-002 Φ5.00 mm 1.00 mm Uncoated $38.00
    Cir-Win-Sapphire-003 Φ10.00 mm 1.00 mm Uncoated $42.00
    Cir-Win-Sapphire-004 Φ12.50 mm 1.00 mm Uncoated $43.00
    Cir-Win-Sapphire-005 Φ20.00 mm 1.00 mm Uncoated $68.00
    Cir-Win-Sapphire-006 Φ25.00 mm 1.00 mm Uncoated $116.00


  • Anti-reflection coatings are also available at your specified wavelength.
  • Sapphire transmits ultraviolet light, but sometimes exhibit fluorescence when subjected to powerful ultraviolet sources. For this reason, they are best suited for use with visible to infrared wavelengths.
  • Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
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    HYT Sapphire Optics focused on the precision manufacturing of high-quality sapphire components, and strived to create sapphire optical windows, fine holes, rods, balls, tubes and other automated, intelligent products and chemical production line.