Zinc Sulfide Optics

Zinc Sulfide (ZnS) Infrared Optical Material

Material Overview

Zinc Sulfide (ZnS) is a core functional optoelectronic material for infrared optical systems. It delivers stable high transmittance across the near-infrared, mid-infrared and far-infrared bands, paired with favorable mechanical properties, making it an ideal choice for applications requiring both high optical performance and structural reliability.

CVD Multi-Spectral ZnS (ZnS MS) Properties

Our zinc sulfide is manufactured via chemical vapor deposition (CVD) to yield high-purity multi-spectral grade material. It features excellent chemical inertness, water insolubility, moderate density and good machinability. With a broad spectral transmission range of 600 nm – 10 μm, it maintains consistent high transmittance across the full operating band.

Key Advantages vs. Zinc Selenide (ZnSe)

Like zinc selenide, ZnS boasts exceptional refractive index uniformity and batch-to-batch consistency, supporting high-fidelity imaging performance with low wavefront distortion, and delivers reliable transmittance in the mid-infrared spectrum.

Compared with ZnSe, zinc sulfide offers higher hardness, greater fracture strength and superior harsh-environment resistance, making it more durable for rugged outdoor, aerospace and industrial operating conditions.

Typical Applications

Thanks to its balanced optical and mechanical performance, ZnS is widely fabricated into various infrared optical components:

Infrared windows and optical fairings

Thermal imaging and infrared surveillance systems

Infrared sensors and detection instruments

Custom ZnS Optical Components

We provide fully customized zinc sulfide optical components engineered to your exact application requirements. Our fabrication capabilities include:

ZnS lenses

ZnS dome

ZnS optical windows

All components can be manufactured strictly to your drawings, with application-specific anti-reflection coatings and precision tolerance controls available.