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25.4mm Dia., 2mm Thick, Uncoated, λ/10 IR Fused Silica Window

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Stock #70-106 4 In Stock
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C$208.60
Volume Pricing
Qty 1-5 C$208.60 each
Qty 6-25 C$166.60 each
Qty 26-49 C$155.40 each
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Specifications

General

Type:
Protective Window

Physical & Mechanical Properties

Clear Aperture CA (mm):
22.86
Diameter (mm):
25.40 +0.00/-0.20
Thickness (mm):
2.00 ±0.10
Bevel:
Protective as needed
Clear Aperture (%):
90
Edges:
Fine Ground
Parallelism (arcsec):
<5
Poisson's Ratio:
0.16
Young's Modulus (GPa):
73
Knoop Hardness (kg/mm2):
522.00

Optical Properties

Coating:
Uncoated
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
IR Fused Silica
Index of Refraction (nd):
1.458
Surface Quality:
20-10
Transmitted Wavefront, P-V:
λ/10
Abbe Number (vd):
67.8
Wavelength Range (nm):
200 - 3500

Material Properties

Density (g/cm3):
2.20
Coefficient of Thermal Expansion CTE (10-6/°C):
0.52 (+5 to +35°C) 0.57 (0 to +200°C) 0.48 (-100 to +200°C)

Regulatory Compliance

Certificate of Conformance:
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Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Product Details

  • IR Grade Fused Silica Substrates
  • Broad Transmission Range from 200 – 3500nm
  • λ/10 Transmitted Wavefront Distortion
  • Excellent Thermal Stability

λ/10 Infrared (IR) Fused Silica Windows feature 20-10 surface quality, <5 arcsec parallelism, and broad transmission from 200 – 3500nm without absorption bands common in other fused silica materials. These fused silica windows offer superior transmission characteristics and a low coefficient of thermal expansion that provides high thermal stability and resistance to thermal shock. λ/10 Infrared (IR) Fused Silica Windows feature laser grade specifications and are available in a variety of diameter and thickness options. These windows are ideal for FLIR, FTIR spectroscopy, medical systems, and thermal imaging applications.

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