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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
30mm Dia. x 2.0mm Thickness 3-5µm Coated Silicon Window

TECHSPEC Silicon (Si) Windows

TECHSPEC Silicon (Si) Windows

Stock #33-136
$220.00
×
Qty 1-10
$220.00
Qty 11
$198.00
Volume Pricing
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Clear Aperture (%):
90.00
Diameter (mm):
30.00
Dimensional Tolerance (mm):
+0.0/-0.1
Thickness (mm):
2.00
Coating:
BBAR (3000-5000nm)
Coating Specification:
Ravg <3.0% @ 3 - 5μm
Coefficient of Thermal Expansion CTE (10-6/°C):
2.55
Density (g/cm3):
2.33
Index of Refraction nd:
3.422 @ 5µm
Knoop Hardness (kg/mm2):
1150
Parallelism (arcmin):
<3
Poisson's Ratio:
0.265
Substrate:
Silicon (Si)
Surface Flatness:
Surface Quality:
60-40
Thickness Tolerance (mm):
±0.1
Type:
Protective Window
Wavelength Range (μm):
3 - 5
Wavelength Range (nm):
3000 - 5000
Young's Modulus (GPa):
140

Regulatory Compliance

RoHS 2015:
Reach 197:

Product Family Description

  • Transmission from 1.2 - 7μm
  • Available Uncoated or AR Coated for 3 - 5μm
  • Ideal for Weight Sensitive Applications

TECHSPEC® Silicon (Si) Windows manufactured from optical grade silicon are popular for the 1.2 - 7μm spectral region due to their low cost and low density. Due to its low density (half that of germanium or zinc selenide), silicon is ideal for weight sensitive applications, especially those in the 3 - 5μm region. Density is 2.329 g/cm3 and Knoop Hardness is 1150, making it harder and less brittle than germanium.

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