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Zinc Sulfide (ZnS) Windows are precision optical windows designed for infrared transmission, particularly in the mid-wave and long-wave infrared regions. ZnS is valued for its broad spectral range, high mechanical strength, and resistance to harsh environmental conditions. These properties make ZnS windows a preferred choice for thermal imaging, surveillance, and IR sensing applications.
Band Optics manufactures Zinc Sulfide (ZnS) Windows for OEMs, system integrators, and research organizations that require stable optical performance in challenging environments. ZnS windows are commonly used as protective and transmissive elements in infrared systems where durability and optical clarity are critical. All products are delivered under a custom optics wholesale model to ensure precise alignment with system-level requirements.
Zinc Sulfide (ZnS) Windows provide excellent transmission from the visible spectrum into the long-wave infrared region. This broad range allows a single window material to support multiple IR applications.
ZnS is mechanically robust and resistant to humidity, thermal shock, and environmental exposure. These characteristics make Zinc Sulfide (ZnS) Windows suitable for outdoor, aerospace, and defense-related systems.
ZnS is available in standard and multispectral grades, such as Cleartran®, which offers improved visible transmission. As a custom optics wholesale manufacturer, Band Optics supports material selection based on wavelength and system performance needs.
ZnS blanks are machined using controlled processes to achieve accurate dimensions and thickness. Special care is taken due to the material's hardness and brittleness.
Advanced polishing techniques deliver smooth surfaces and controlled flatness. Each Zinc Sulfide (ZnS) Window is inspected for surface quality and optical integrity.
Band Optics supports prototype fabrication, pilot production, and volume manufacturing. All workflows are optimized for repeatability and traceability within custom optics wholesale supply chains.
Zinc Sulfide (ZnS) Windows produced by Band Optics are widely used in:
Thermal imaging and infrared cameras
Military and defense optical systems
IR spectroscopy and sensing equipment
Environmental monitoring instruments
Industrial and scientific infrared optics
These applications rely on ZnS for its transmission range, durability, and reliability.
| Parameter | Typical Range |
|---|---|
| Material | Zinc Sulfide (ZnS) |
| Wavelength Range | 0.4 – 14 µm |
| Optical Transmission | > 70% (IR, typical) |
| Surface Flatness | λ/5 @ 632.8 nm |
| Surface Quality | 60/40 or better |
| Density | ~4.09 g/cm³ |
| Clear Aperture | > 90% |
| Coating Options | Uncoated or AR (optional) |
In-house machining, polishing, coating, and inspection facilities ensure consistent optical and mechanical quality.
ISO-certified quality systems support traceability, repeatability, and compliance with international optical manufacturing standards.
Long-term partnerships with global OEMs, defense contractors, and research institutions demonstrate manufacturing reliability and technical expertise.
They are used in infrared and thermal imaging systems that require broad IR transmission and high environmental durability.
Cleartran® ZnS offers improved visible-light transmission while maintaining infrared performance, making it suitable for multispectral applications.
Yes. Dimensions, thickness, surface quality, material grade, and coatings can all be customized to meet specific system requirements.
No. All Zinc Sulfide (ZnS) Windows are manufactured exclusively under a custom and wholesale-only model.
Quality is ensured through controlled machining, polishing, optical inspection, and ISO-based quality management systems.
