Description
CVD zinc sulfide is an important material for long-wave infrared windows and is widely used in the fabrication of infrared windows, rectifiers and infrared optical components.UM OPTICS offers ZnS plano-convex lens in various sizes and focal lengths.
Optical Multispectral CVD ZnS Zinc Sulfide Window
Specifications
| Substrate Material: | ZnS |
|---|---|
| Antireflection Coating: | Coated |
| Diameter: | 3 mm |
| Surface Quality: | 60-40 scratch-dig |
| Surface Flatness: | lambda/6 |
| Thickness: | 1 mm |
| Diameter Tolerance: | +0/-0.1mm |
| Thickness Tolerance: | ±0.1mm |
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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
In which military systems are ZnS windows commonly used?
They are critical in missile guidance domes, armored vehicle thermal imaging systems, and airborne infrared sensors due to their IR transparency and ruggedness.
What is CVD ZnS, and how does it differ from other forms of zinc sulfide?
CVD ZnS (Chemical Vapor Deposition Zinc Sulfide) is a synthetic material with high purity and uniform structure, offering superior infrared transparency and durability compared to hot-pressed or natural ZnS.
Why is CVD ZnS resistant to harsh environments?
Its high hardness, thermal stability, and chemical inertness allow it to withstand abrasion, extreme temperatures, and corrosive conditions.
What limits the use of ZnS windows in ultraviolet (UV) applications?
ZnS has strong absorption below 400 nm, making it unsuitable for UV-focused systems but excellent for IR and visible-IR multispectral uses.
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