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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm Diameter Uncoated, Metalized Sapphire Window

Stock #66-380
$125.00
×
Qty 1+
$125.00
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Abbe Number (vd):
72.24
Bevel:
Protective as needed
Clear Aperture (%):
≥90
Clear Aperture CA (mm):
18.00
Diameter (mm):
20.00 ±0.10
Thickness (mm):
2.00 ±0.25
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
8.8
Density (g/cm3):
3.97
Edges:
Chrome, Nickel, and Gold
Index of Refraction nd:
1.77
Knoop Hardness (kg/mm2):
1900
Parallelism (arcmin):
≤3.5
Poisson's Ratio:
0.27
Solderability:
MIL-STD-883
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Sapphire (Al2O3)
Surface Flatness:
Surface Quality:
80-50
Type:
Specialty Window
Wavelength Range (nm):
200 - 5500
Young's Modulus (GPa):
435

Regulatory Compliance

RoHS:

Product Family Description

  • Precision Sapphire Substrate
  • Solderable Metalized Edge
  • Greater than 80% Transmission from 0.4 - 5.5μm

TECHSPEC® Metalized Sapphire Windows are created by applying thin layers of chrome, nickel and gold around the edge of a sapphire window. This metalized edge creates a surface that can be soldered or bonded directly into your opto-mechanical assembly allowing you to create a hermetic seal. Hermetically sealed optics are used in a variety of applications ranging from infrared imaging systems to medical devices. The chrome, nickel and gold metalized layers meet the MIL-STD-883 solderability standard. For OEM requirements, custom edge metalization of other IR materials such as germanium and zinc sulfide is available. Please contact our Sales Department for details.

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