Sapphire Setp Windows for aerospace, medical, and industrial applications
  • Exceptional mechanical strength and chemical resistance
  • High thermal durabilities excellent for harsh environments
  • Maximum diameter 600mm
  • Broad wavelength range from 150-5500nm
  • Blank substrates, AR-coated pieces, and precision windows are available
  • Sapphire possesses nice light transmission in 0.20 ~ 5.50μm wave band, is ideal for laser and infrared optical materials. Products widely used in endoscope,watch glass, optical lens, surface acoustic wave filter, military infrared window, optical filter, observation window for high/low temperature and cosmetic instrument windows, etc. We can provide anti-reflection film, high-reflective film, dielectric film, filter film and metallized film services.

    Sapphire windows mainly contain four types: circular windows, oval windows, oblique circular windows and step windows.


    High Quality Sapphire Step Windows


    Circular Step Diagram

    Specifications of Setp Sapphire Windows

    Material Sapphire (Al2O3)
    Diameter 2mm ~ 600mm
    Thickness 0.1mm ~ 100mm
    Diameter Tolerance +/-0.05 mm
    Thickness Tolerance +/-0.025 mm
    Step Tolerance +/-0.1 mm
    Surface Quality 20/10 S/D
    Parallelism 30 arc sec
    Clear Aperture >85%
    Chamfer/Bevel < 0.25*45°
    Coating Anti-reflective coating, customized available

    Price list and specification index

    If need other specifications and quantities products, please contact us(
    Part Number Dia. Thickness (mm) Coating Price
    Step-Win-Sapphire-001 Φ12.50 mm 1.00 mm Uncoated $42.00
    Step-Win-Sapphire-002 Φ20.00 mm 2.00 mm Uncoated $72.00
    Step-Win-Sapphire-003 Φ25.40 mm 1.00 mm Uncoated $118.00
    Step-Win-Sapphire-004 Φ50.00 mm 1.00 mm Uncoated $390.00
    Rou-Win-Sapphire-005 Φ50.00 mm 1.00 mm AR@400 - 700nm $428.00
    Rou-Win-Sapphire-006 Φ150.00 mm 3.00 mm Uncoated $1920.00


  • 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.