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Description

Multispectral zinc sulfide (ZnS) is a high-performance optical material, primarily produced via Chemical Vapor Deposition (CVD) for exceptional homogeneity and purity. Engineered to transmit light across a broad spectral range—from visible (0.4 μm) to mid-infrared (14 μm)—it serves as a core component in multispectral optical systems requiring simultaneous operation across multiple wavelength bands. CVD-grown multispectral ZnS features low scattering, minimal absorption, and robust mechanical properties, making it suitable for demanding applications like high-altitude imaging, remote sensing, and defense-grade photonic systems. Available in custom shapes (windows, lenses, prisms) and sizes, it is optimized to balance optical performance and environmental durability for multispectral integration.

Factory Supply Optical Multispectral ZnS Zinc Sulfide Window

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Specifications

Substrate Material: ZnS
Diameter (or Largest Dimension): 25 mm
Thickness: 2 mm
Antireflection Coating: Coated
Surface Quality (Scratch-Dig): 60-40
Surface Flatness: <= Lambda/4
Diameter Tolerance: +0/-0.1mm
Thickness Tolerance: ±0.1mm
Parallelism: <3 arcmin

Got questions about specs? Use the inquiry form to ask.

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Features

  • Broad infrared transparency – High transmission in both mid-wave (3–5 μm) and long-wave (8–12 μm) IR regions.
  • Superior durability – High hardness and resistance to abrasion, suitable for rugged environments.
  • Thermal stability – Maintains performance under extreme temperature fluctuations and high-speed conditions.
  • Chemical resistance – Inert to most acids, alkalis, and moisture, ensuring long-term reliability.
  • Low optical distortion – Minimal scatter and absorption for precise imaging and laser applications.

Applications

  • Military optics – Used in missile guidance domes and armored vehicle thermal sights.
  • Aerospace systems – Protects sensors in high-speed aircraft and satellite imaging.
  • Industrial laser systems – Windows for CO2 lasers in cutting and welding machinery.
  • Surveillance equipment – Critical in thermal cameras for border security and night vision.
  • Multispectral imaging – Enables dual-band visible/IR performance in scientific instruments.
     
     
     
     
     
     

Frequently Asked Questions

How does multispectral ZnS differ from standard ZnS or ZnSe?
Standard ZnS is optimized for either visible or IR bands, while multispectral ZnS covers both ranges (0.4–14 μm). ZnSe offers better mid-IR transmittance but is softer and less durable; multispectral ZnS balances spectral breadth and mechanical robustness.
What coatings are recommended for multispectral ZnS components?
Broadband AR coatings minimize reflection across the multispectral range; for targeted applications, dual-band AR coatings enhance performance in key wavelength windows.
Can multispectral ZnS be used for high-power laser systems?
It has a moderate laser damage threshold , making it suitable for low-to-medium power multispectral laser systems; for high-power applications, anti-reflective coatings with laser-hardened layers are recommended.
What quality control measures are in place for custom multispectral ZnS windows?
As a factory, we implement strict QA/QC processes: spectral transmittance testing , surface quality inspection , flatness measurement, and dimensional accuracy verification.
What is the lead time for custom multispectral ZnS windows, and is small-batch production supported?
Lead time ranges from 7–15 working days for standard custom specifications and 15–30 days for complex shapes/coatings. As a factory, we fully support small-batch (MOQ ≥1 piece) and mass production to meet both prototype and bulk procurement needs.

Got more questions? Use the inquiry form to ask the supplier directly.

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