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ZnSe ZnS Windows

Zinc selenide/zinc sulfide windows are processed through fine grinding, grinding, measuring, ultra-high precision polishing and other processes. Under precise control of the machine tool and processing environment, ultra-high precision correction polishing technology is used to polish the window surface. , achieving an infrared window with an optical plane surface shape accuracy of ≤0.1 micron and a surface roughness Ra of ≤0.01 micron.

znse windows
zinc selenide window

Specifications of ZnSe ZnS Windows


Zinc selenide zinc sulfide window product parameter table
projectIndicator requirements
1.MaterialZinc selenide, zinc sulfide infrared materials
2. DiameterOD≤300mm OD±0.025 or according to customer requirements
3. Center thicknessT=0.1~50mm±0.01 or according to customer requirements
4. Effective focal lengthaccording to customers needs
5. Working distanceaccording to customers needs
6. Effective apertureED>80% aspheric area
7.CoatingAR or DLC coating R<0.5% @λnm
8. Surface shapeUltra-high precision Rt≤0.1μm, high precision Rt≤0.5μm, precision Rt≤1μm
9.Surface quality60-40, 40-20, 20-10, 10-5


Features of ZnSe ZnS Windows

Features of ZnSe ZnS Windows
  • One-stop customized production: Solar Valley processes various circular, D-shaped, square, trapezoidal and other structural infrared windows according to customer requirements. It can provide windows in different size ranges and materials. The base material is selenium. Zinc sulfide (ZnSe), zinc sulfide crystal materials, and provide various optical coatings such as anti-reflective coating, high-reflective coating, spectroscopic film, metal film, etc.

  • Material: Zinc selenide (ZnSe) and zinc sulfide crystal materials are commonly used materials for producing efficient infrared windows in imaging systems.

  • Infrared window properties: strong resistance to mechanical impact and thermal shock, high surface hardness, good transmittance in the infrared field, and suitable for use in harsh environments. It can be made very thin and is suitable for visible light and mid- and far-infrared spectrum. It is usually used as a protective window for electronic sensors or detectors of the external environment. It is used to separate the environment on both sides and isolate the inside and outside of the instrument from each other. This protects internal components.

    Product indicator description:

    1. Maximum dimensions of circular zinc selenide and zinc sulfide windows: OD≤φ300mm, thickness 0.1~50mm

    2. Maximum dimensions of square zinc selenide and zinc sulfide windows: L×W ≤300×300mm

    3. Zinc selenide and zinc sulfide windows can reach the following accuracy levels according to customer requirements:

    Ultra-high precision grade: surface error <0.1μm, surface roughness <0.01μm

    High precision grade: Surface error <0.5μm, surface roughness <0.05μm Precision grade: Surface error <1μm, surface roughness <0.1μm


  • Surface defect grade: 60-40, 40-20, 20-10, 10-5. Produced according to customer requirements.

  • Coating: Coating according to customer requirements.

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