117mm Zinc Sulfide (ZnS) Optical Windows: High Transmission & Stable Performance
OPTOStokes presents premium 117mm large-aperture zinc sulfide (ZnS) optical windows, engineered for high transmission and long-term stable performance in demanding optical systems. Manufactured from high-purity CVD-grown multispectral ZnS, these windows combine excellent spectral properties with robust mechanical durability, making them a reliable choice for both R&D prototyping and OEM production.
Core Material Properties of Zinc Sulfide (ZnS)
Zinc sulfide is a widely adopted infrared optical material valued for its broad transmission range and exceptional environmental resistance. Multispectral-grade ZnS delivers consistent performance from visible through long-wave infrared wavelengths, while its high hardness and fracture strength support use in harsh field and industrial conditions.
| Property | Specification |
|---|---|
| Transmission Range (Multispectral ZnS) | 0.37 – 14 μm |
| Refractive Index @ 10 μm | 2.20084 |
| Knoop Hardness | 160 kg/mm² |
| Density | 4.09 g/cm³ |
| Thermal Expansion Coefficient | 7.2 × 10⁻⁶ /°C |
| Maximum Operating Temperature | 250 °C (normal atmosphere) |
Key Features of OPTOStokes 117mm ZnS Windows
Our 117mm ZnS optical windows are optimized for large-aperture applications where uniform transmission and wavefront fidelity are critical. Each window undergoes precision polishing and strict quality inspection to ensure high surface figure accuracy and minimal scatter loss. The material’s inherent chemical stability and resistance to particle abrasion enable reliable operation in industrial and outdoor environments without performance degradation over time.
With an extensive in-stock selection and full customization capabilities, OPTOStokes supports both quick-turn prototype builds and high-volume OEM orders with predictable lead times and consistent quality.
Typical Applications
These 117mm ZnS windows are ideal for integration into Laser Systems, thermal imaging equipment, and Industrial Inspection setups. As part of our premium Optical Flats & Laser Windows portfolio, they deliver consistent performance in demanding operating environments including infrared detection, scientific research instruments, and defense-related optical assemblies.
Standard Specifications
| Parameter | Value |
|---|---|
| Material | High-purity CVD multispectral zinc sulfide (ZnS) |
| Clear Aperture | 117 mm (large-aperture design) |
| Surface Quality | 40-20 scratch-dig (standard); custom grades available |
| Surface Figure | λ/4 @ 633 nm (full aperture) |
| Parallelism | ≤ 1 arcmin |
| Coating Options | Custom AR coatings for UV, VIS, NIR, SWIR, and LWIR bands |
Get Your Custom ZnS Window Solution
For R&D engineers seeking validated large-aperture optical components, procurement managers needing reliable supply with predictable lead times, and technical decision-makers evaluating long-term optical partners, OPTOStokes delivers world-class quality and flexible service. We maintain extensive in-stock inventory for fast delivery and offer full customization of dimensions, coatings, and performance grades to match your exact system requirements.
Contact our optical engineering team at sales@optofilters.com to request technical support, sample pricing, or a tailored quotation for your project.