new material
Zinc sulfide double-concave lens is a precision optical component designed for controlled beam expansion, minimized spherical aberration, and superior infrared transmission. Manufactured from high-purity ZnS, it offers exceptional optical clarity, strong resistance to environmental degradation, and reliable thermal stability. This lens is widely used in laser systems, infrared imaging, aerospace applications, and scientific instrumentation, ensuring optimal light manipulation and performance for advanced optical systems.
Product Overview
The Zinc Sulfide (ZnS) double-concave lens is an optical lens with two inwardly curved surfaces, typically made from high-purity Zinc Sulfide material. It is specifically designed to achieve certain optical effects in various optical systems. The lens has a negative focal length, allowing it to diverge parallel incident light, and is widely used in beam expansion and projection applications. Due to the excellent optical performance and mechanical strength of Zinc Sulfide, this lens offers outstanding transmission and stability across a wide spectral range, particularly in the near-infrared, mid-infrared, and far-infrared regions.
Key Features
- Negative Focal Length Design: This lens causes parallel light to diverge, making it ideal for beam expansion and projection applications.
- Excellent Optical Performance: Particularly effective in the near-infrared, mid-infrared, and far-infrared regions, with high optical transmission and minimal loss.
- Good Mechanical and Thermal Properties: Zinc Sulfide provides moderate hardness and excellent thermal stability, ensuring durability and reliable performance.
- Chemical Stability: The material has good resistance to chemical corrosion, making it suitable for various environmental conditions.
- Precision Manufacturing: Precision cutting and polishing ensure the lens’s surface quality and dimensional accuracy, providing optimal optical performance.
Applications
- Beam Expansion: Zinc Sulfide double-concave lenses are used in optical systems to expand or reshape beams.
- Projection Systems: These lenses control the shape and size of projected light, optimizing the quality and efficiency of projection systems.
- Laser and Optical Instruments: Essential components in laser systems and optical instruments, improving optical transmission efficiency and system performance.
- Spectroscopic Instruments: Zinc Sulfide’s superior optical properties make it ideal for infrared spectroscopic systems, enhancing measurement precision.
- Infrared Imaging Systems: Widely used in infrared imaging and optical measurement instruments, improving image quality and measurement accuracy.
| Physical Property | CVD Zinc Sulfide | Multispectral CVD Zinc Sulfide |
| Density | 4.09 g/cm³ | 4.09 g/cm³ |
| Resistivity | ~10¹² Ω·cm | ~10¹¹ Ω·cm |
| Melting Point | 1827 ℃ | - |
| Chemical Purity | 100.00% | 100.00% |
| Thermal Expansion | 6.6×10⁻⁶ @ 273K | 6.3×10⁻⁶ @ 273K |
| 7.3×10⁻⁶ @ 373K | 7.0×10⁻⁶ @ 373K | |
| Thermal Conductivity | 16.7 W/(m·K) @ 298K | 27.2 W/(m·K) @ 298K |
| Specific Heat Capacity | 0.469 J/(g·K) @ 298K | 0.515 J/(g·K) @ 298K |
| Knoop Hardness | 200-235 kg/mm² | 160 kg/mm² |
| Bending Strength | 103 MPa | - |
| Young's Modulus | 74.5 GPa | 74.5 GPa |
| Poisson's Coefficient | 0.29 | 0.29 |
| Optical Property | CVD Zinc Sulfide | Multispectral CVD Zinc Sulfide |
| Transmission Range | 1-14 μm | 0.37-14 μm |
| Refractive Index Inhomogeneity | <7.3×10⁻⁴ @ 10.6μm | <0.2×10⁻⁴ @ 632.8nm |
| Absorption Coefficient | 0.2 /cm @ 10.6μm | 0.2 /cm @ 10.6μm |
| Thermal Light Coefficient | 4.6×10⁻⁵ @ 1150nm | 5.43×10⁻⁵ @ 632.8nm |
| 4.3×10⁻⁵ @ 3390nm | 4.21×10⁻⁵ @ 1150nm | |
| 4.1×10⁻⁵ @ 10.6μm | 3.87×10⁻⁵ @ 3390nm |
| CVD Zinc Sulfide - Refractive Index and Wavelength | |||
| Wavelength (nm) | Refractive Index (n) | Wavelength (nm) | Refractive Index (n) |
| 620 | 2.355 | 9800 | 2.203 |
| 1000 | 2.292 | 10600 | 2.192 |
| 3800 | 2.253 | 11400 | 2.18 |
| 5000 | 2.246 | 12200 | 2.167 |
| 7000 | 2.232 | 13800 | 2.132 |
| 9000 | 2.212 | 14200 | 2.126 |
| Multispectral CVD Zinc Sulfide - Refractive Index and Wavelength | |||
| Wavelength (nm) | Refractive Index (n) | Wavelength (nm) | Refractive Index (n) |
| 400 | 2.545 | 8000 | 2.223 |
| 1010 | 2.292 | 9000 | 2.213 |
| 2060 | 2.264 | 10000 | 2.201 |
| 3500 | 2.255 | 11250 | 2.183 |
| 4500 | 2.25 | 12000 | 2.171 |
| 5000 | 2.247 | 13000 | 2.153 |
| Property | Value |
| Diameter Range | 2-300mm |
| Focal Length | 15-5000mm |
| Thickness | 0.12-60mm |
| Surface Quality | 80-50, 60-40, 40-20, 20-10, 10-5 |
| Surface Flatness | λ/2, λ/4, λ/8, λ/10 |
| Clear Aperture | >90% |
| Coating | Customizable |
