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

15mm Dia. λ/4 Uncoated, Precision Sapphire Window

TECHSPEC Precision Sapphire Windows

TECHSPEC Precision Sapphire Windows

Stock #88-428
£136.00 £81.60
Qty 1-10
£136.00 £81.60
Qty 11
£108.80 £65.28
Volume Pricing
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Abbe Number (vd):
72.24
Axis Orientation:
Random
Birefringence (no-ne):
0.008 for Visible Light Orthogonal to Optical Axis
Clear Aperture (%):
90.00
Diameter (mm):
15.00
Dimensional Tolerance (mm):
+0.00/-0.25
Thickness (mm):
2.00
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
8.8
Density (g/cm3):
3.97
Index of Refraction nd:
1.77
Parallelism (arcmin):
≤3
Poisson's Ratio:
0.27
Substrate:
Sapphire (Al2O3)
Surface Flatness:
λ/4
Surface Quality:
40-20
Thickness Tolerance (mm):
±0.1
Type:
Protective Window
Wavelength Range (μm):
0.2 - 5.5
Wavelength Range (nm):
200 - 5500
Young's Modulus (GPa):
435
Knoop Hardness (GPa):
1900

Regulatory Compliance

RoHS 2015:
Reach 197:

Product Family Description

  • λ/4 Surface Flatness
  • High Tolerance Design for Superior Performance
  • Excellent Transmission from UV to MWIR

TECHSPEC® Precision Sapphire Windows are ideal for use in demanding applications that require superior broadband transmission from 0.2 – 5.5μm, including imaging or spectroscopy. TECHSPEC Precision Sapphire Windows utilize a high tolerance design in addition to the innate characteristics of sapphire, which include a high dielectric constant, high thermal conductivity, extreme surface hardness, and resistance to many chemical acids and alkalis, to improve system performance. Additionally, due to sapphire’s structural strength, sapphire windows are thinner than comparable standard glass windows, minimizing absorption.

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