ZnS Dome Lens
ZnS Dome Lens
Zinc sulfide is divided into primary zinc sulfide and multispectral zinc sulfide. Multispectral zinc sulfide is cured from primary zinc sulfide. Zinc is obtained by hot isostatic pressing. Multispectral zinc sulfide has high purity, insoluble in water and dense
Compared with ordinary glass dome lenses, ZnS dome lenses are especially suitable for infrared applications, including MWIR and LWIR systems. Multispectral-grade ZnS can support visible-to-infrared optical systems, while standard ZnS is commonly used for long-wave infrared imaging applications. ZnS is often selected for optical domes, windows, and lenses where mechanical durability, infrared transmission, and environmental stability are important.
ZnS Dome Lens Specifications
| Product Name | ZnS Dome Lens / Zinc Sulfide Dome Lens |
| Material | Standard ZnS, Multispectral ZnS |
| Shape | Hemispherical dome, dome with flange, custom dome |
| Diameter | Custom available according to drawings |
| Thickness | Custom thickness available |
| Surface Quality | 60-40, 40-20 or custom |
| Surface Accuracy | Custom according to optical requirements |
| Coating | Uncoated, AR coating, BBAR coating, infrared coating |
| Application Wavelength | Visible, MWIR, LWIR, infrared systems |
| Processing | CNC grinding, polishing, precision inspection |
| Customization | OEM and ODM optical dome lens manufacturing |
What Are the Characteristics of the ZnS Material Used by Sunday Optics?
Ashley-Tech utilizes high-quality Zinc Sulfide (ZnS), an advanced infrared optical material available in two grades: multispectral ZnS (water-clear) and standard ZnS (yellow-colored). ZnS is chemically inert, highly pure, and insoluble in water, making it suitable for demanding optical applications.
This material offers excellent mechanical strength, moderate density, and good machinability, enabling the fabrication of complex optical components with high precision. ZnS also provides outstanding transmission across a broad spectral range from approximately 0.5 μm to 10 μm (500–10,000 nm), covering both the visible and infrared regions. These properties make ZnS an ideal choice for infrared windows, domes, lenses, and protective optical components.
What Are the Applications of ZnS Dome Lenses?
Due to their exceptional infrared transmission, durability, and environmental resistance, ZnS dome lenses are widely used in a variety of advanced optical systems, including:
Military & Defense
Infrared missile seeker domes
Thermal imaging systems
Night vision devices
Target tracking and surveillance equipment
Aerospace
Aircraft infrared observation windows
Satellite infrared sensor protective domes
Spaceborne imaging and sensing systems
Industrial Inspection
Infrared thermometers and temperature monitoring systems
Industrial infrared cameras
Non-destructive testing (NDT) equipment
Process monitoring and quality control systems
Medical Equipment
Infrared medical imaging devices
Thermal diagnostic and monitoring systems
Scientific Research
Infrared spectroscopy instruments
Astronomical observation and detection equipment
Optical research and laboratory applications
ZnS dome lenses are particularly valued in applications requiring high infrared transmission, excellent environmental durability, and reliable performance under harsh operating conditions.
Standard ZnS vs Multispectral ZnS Dome Lens
Different optical systems may require different ZnS material grades. Standard ZnS is commonly used for infrared applications, especially long-wave infrared imaging systems. Multispectral ZnS offers a broader transmission range and can be used in systems that combine visible, SWIR, MWIR, and LWIR channels.