Optical Glass Components
Periscope Prism
Infrared Optical Elements
Laser Lens
English
May 13-2024
The refractive index of Zinc sulfide (ZnS) is uniform and consistent. lt has a good image transmission performance in 8000 nm-12000 nm wave band. The material also has a high transmittance in mid-infrared, but with the shortening of wavelength, absorption and scattering will increase.
| Name | Index of Refraction (nd) | Abbe Number (vd) | Density(g/cm3) | CTE (x 10-6/°C) | dn/dT (x 10-6/°C) | Knoop Hardness | Properties /Typical Applications |
| Zinc Sulfide (ZnS) | 2.631 | N/A | 5.27 | 7.6 | 38.7 | 120 | Excellent Transmission in Both Visible and IR,Harder and More Chemically Resistant than ZnSe Used in Thermal Imaging |
| Technical Requirement | Commercial Grade | Precision Grade | High Precision |
| Size range | 1-600mm | 2-600mm | 2-600mm |
| Dimensional tolerance | ±0.1mm | ±0.025mm | ±0.01 mm |
| Thickness tolerance | ±0.1mm | ±0.025mm | ±0.01mm |
| Parallelism | ±3' | ±15'' | ±2' |
| Surface quality | 60-40 | 40- 20 | 20-10 |
| Surface accuracy | 1.0λ | λ10 | λ/20 |
| Bevelling | 0.1 -0.5mm*45° | ||
| Substrate | ZnS | ||
| Diameter(mm) | Thickness(mm) | Coating | Diameter(mm) | Thickness(mm） | |
| 10 | 1 | 75 | 3 | ||
| 12.5 | 1 | 75 | 5 | ||
| 20 | 2 | 76.2 | 6 | ||
| 25 | 3 | 80 | 8 | ||
| 30 | 3 | 90 | 10 | ||
| 38.1 | 3 | 100 | 10 | ||
| 40 | 4 | 150 | 15 | ||
| 50 | 3 | 180 | 18 | ||
| 50.8 | 3 | 200 | 20 | ||
| 63.5 | 5 | 300 | 35 |
Infrared Transparency: ZnS windows offer high transparency in the infrared spectrum, crucial for IR imaging and sensing applications.
Optical Clarity: This ZnC sulfide glass provides clear vision for precise optical alignment and calibration.
Low Absorption: Minimizes energy loss, ensuring efficient optical performance in various systems.
Durable Construction: Resistant to mechanical stress and environmental factors, ensuring long-term reliability.
May 13-2024
