Key Features:
- Excellent optical uniformity
- High resistance to acid and alkali corrosion
- Stable chemical properties
- Consistent refractive index and uniformity
- High transmittance and reflectance in the visible spectrum
Description: ZnS (Zinc Sulfide) is a wide-bandgap semiconductor material with excellent transparency in the infrared spectrum. It is a crucial infrared optical material with outstanding chemical and physical properties. ZnS crystals are ideal for infrared lenses, laser windows, and thermal imaging systems. CVD-grown ZnS crystals, after hot isostatic pressing (HIP) treatment, exhibit multi-spectral properties, enhancing IR transmittance and visible light performance. They offer excellent transmission over the entire range from 0.4 µm to 12 µm.
Physical Properties:
| Property | Specification |
|---|---|
| Density | 4.09 g/cm³ |
| Hardness | 150-160 kg/mm² |
| Diameter Tolerance | +0.0/-0.1 mm |
| Length Tolerance | ±0.1 mm |
| Surface Flatness | λ/8 @ 632.8 nm |
| Parallelism | < 1 arc minute |
| Surface Quality | 40-20 Scratch/Dig |
| Clear Aperture | > 90% |
| Chamfer | < 0.25 x 45° |
| Coating | Custom designs available |
Optical Properties:
| Property | Specification |
|---|---|
| Transmission Range | 0.4-12 µm |
| Refractive Index | 2.356 @ 10.6 µm |
| Absorption Coefficient | < 0.0005 cm⁻¹ @ 10.6 µm |
| Optical Density (OD) | 1.85 |
| Transmission (%) | > 65% @ 10.6 µm |
Standard Specifications:
| Property | Specification |
|---|---|
| Orientation | Random |
| Diameter | Up to 6 inches |
| Thickness | 0.5 to 10 mm |
| Surface Quality | 40/20 Scratch/Dig (MIL-PRF-13830B) |
| Surface Flatness | λ/8 @ 632.8 nm |
| Parallelism | < 1 arc minute |
| Perpendicularity | < 5 arc minutes |
| Coating | AR/AR, AR/DLC, and other custom coatings |
Other Properties:
- High chemical durability ensures longevity in harsh environments.
- Excellent thermal stability supports high-power laser operations.
Applications:
- Infrared lenses and windows
- High-power laser optics
- Thermal imaging systems
- Medical and scientific applications
- Astronomy and IR night vision
Processing and Handling:
- ZnS crystals require careful handling to avoid surface damage and contamination.
- Use gloves or finger cots when handling ZnS components.
- Store in a clean, dry environment with temperature control to prevent thermal shock.
- Ensure proper cleaning procedures to maintain optical quality.
Why Choose Shape Optics:
- We provide high-quality ZnS crystals with precise specifications and excellent optical properties.
- Our crystals undergo stringent quality control to ensure reliability and performance in demanding applications.
- Customization options available to meet specific requirements.
Shape Optics Strength and Capabilities:
- Expertise in crystal growth and fabrication techniques.
- Advanced metrology and inspection facilities to ensure superior product quality.
- Comprehensive support and consultation services to assist in the integration of ZnS crystals into various optical systems.
- Commitment to innovation and excellence in the field of optical engineering.
