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All Products / Optics / Windows and Diffusers / UV and IR Windows / ISP Optics Zinc Selenide (ZnSe) Wedged Windows
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38.1mm Dia., 3mm Thick, 3° Wedge, ISP Optics Zinc Selenide (ZnSe) Wedged Window | ZC-WW3-38-3

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Specifications

General

Type:
Protective Window
Model Number:
ZC-WW3-38-3

Physical & Mechanical Properties

Bevel:
Protective as needed
Clear Aperture (%):
85
Clear Aperture CA (mm):
32.38
Diameter (mm):
38.10 +0.00/-0.13
Thickness (mm):
3.00 ±0.13
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
120
Poisson's Ratio:
0.28
Young's Modulus (GPa):
67.2

Optical Properties

Coating:
Uncoated
Index of Refraction (nd):
2.631
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Zinc Selenide (ZnSe)
Surface Flatness (P-V):
2λ @ 10.6μm
Surface Quality:
60-40
Wavelength Range (nm):
600 - 18000
Wedge Angle:
3° ±0.5

Material Properties

Coefficient of Thermal Expansion CTE (10-6/°C):
7.57
Density (g/cm3):
5.27

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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Reach 240:
Compliant
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Product Details

ISP Optics Zinc Selenide (ZnSe) Wedged Windows feature a 30 arcmin or 3° wedge to eliminate fringe patterns from etalon effects as well as prevent cavity feedback. Zinc selenide has wide usage in high power CO2 laser systems due to its low absorption and high resistance to thermal shock. ISP Optics Zinc Selenide (ZnSe) Wedge Windows feature a broad wavelength range with excellent transmission in the IR, making them ideal for a wide variety of IR applications including thermal imaging, FLIR, and medical diagnostic systems.

Note: Special care should be taken when handling zinc selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid risk of contamination.

Technical Information

Special Handling

These optics require special handling to avoid damage and ensure long-term performance. Proper handling, cleaning, and storage are essential to maintain optical quality. Explore our Optics Cleaning Resources for step-by-step guides and best practices. For personalized assistance, Email us or Chat with our technical support team.

Component Handling Tools
Component Handling Tools

Related Products

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.