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All Products / Optics / Windows and Diffusers / UV and IR Windows / Single-Side AR-Coated Sapphire Windows
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

50.8mm Dia., 3.18mm Thick, 1 Side VIS-EXT Sapphire Window

Single-Side AR-Coated Sapphire Windows

Single-Side AR-Coated Sapphire Windows

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Stock #90-063 New 8 In Stock
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C$742.14
Volume Pricing
Qty 1-24 C$742.14 each
Qty 25-50 C$593.71 each
Qty 51-99 C$556.61 each
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Specifications

General

Type:
Protective Window

Physical & Mechanical Properties

Bevel:
Protective as needed
Clear Aperture (%):
90
Clear Aperture CA (mm):
45.72
Diameter (mm):
50.80 ±0.05
Thickness (mm):
3.18 ±0.05
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
1,900.00
Parallelism (arcmin):
≤3.5
Poisson's Ratio:
0.27
Young's Modulus (GPa):
435

Optical Properties

Abbe Number (vd):
72.24
Axis Orientation:
Random
Birefringence (no-ne):
0.008 for Visible Light Orthogonal to Optical Axis
Coating:
VIS-EXT (350-700nm)
Coating Specification:
Ravg <0.5% @ 350 - 700nm
Index of Refraction (nd):
1.77
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Sapphire (Al2O3)
Surface Quality:
80-50
Wavelength Range (nm):
350 - 700

Material Properties

Coefficient of Thermal Expansion CTE (10-6/°C):
8.8
Density (g/cm3):
3.97

Regulatory Compliance

Certificate of Conformance:
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Product Details

  • Combines the High Transmission of an AR-Coating with the Ruggedness of Sapphire
  • Ideal for Applications Where High Environmental Resistance is Required
  • Uncoated Surface can Withstand Intensive Cleaning and Abrasion

TECHSPEC® Single-Side AR-Coated Sapphire Windows feature a durable single-crystal sapphire substrate with an Anti-Reflection coating on one side for improved performance. The single-surface coating combines the benefits of higher transmission with the hardness, strength, and chemical resistance of sapphire. These windows are available in VIS-NIR (400-1000nm) or VIS-EXT (350-700nm) single-sided coating options. TECHSPEC® Single-Side AR-Coated Sapphire Windows can be used with the uncoated surface facing outwards to resist abrasion or harsh chemicals, ensuring the coated surface is not exposed to conditions that may cause damage and reduce performance. These windows are ideal for applications in food or healthcare where intensive cleaning is necessary.