Silicon Meniscus Lens PSi07-
Silicon selenide lenses have excellent optical properties, with high transmittance in the visible and infrared bands, as well as low reflectivity and low absorption. Used as a light path transmission or reflection device in equipment such as LiDAR, optical sensors, and spectrometers. UM OPTICS provides a diameter of 2-300mm and a thickness of 0.12-60mm (with an accuracy of 20-10,1)/ 10L@633nm ）Silicon selenide lens, can be coated with MgF2, UV-AR, UV-VIS, VIS-EXT, VIS-NIR, NIR I, NIR II, Telecom NIR, SWIR, SWIR, YAG-BBAR and other film systems.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Dia | 2-300 mm |
| Focal Length | 15-5000 mm |
| Center Thickness | 0.12-60 mm |
| Edge Thickness | 0.12-60 mm |
| Design Wavelength | Custom |
| Radius of Curvature | Custom |
| Surface Quality | 60-40 |
| Diameter Tolerance | +0.0/-0.1 |
| Thk Tolerance | ±0.1 mm |
| Substrate Material | Silicon（Si） |
| PV [@632.8nm] | λ/4 |
| Centering | <3′ |
| Clear Aperture | >90% |
| Coating | Uncoated |
| REACH | Compliant |
| ROHS | Compliant |
| Transmission Range [Substrate Material：Silicon（Si）] | 1.2-15μm |
| Refractive Index [Substrate Material：Silicon（Si）；@10μm] | 3.41776%@10μm |
| Reflection Loss [Substrate Material：Silicon（Si）；@10μm] | 46.1%@10μm |
| Structure [Substrate Material：Silicon（Si）] | Single crystal,synthetic |
| Cleavage Planes [Substrate Material：Silicon（Si）] | <111> |
| Density [Substrate Material：Silicon（Si）] | 2.33 g/cm³ |
| Melting Point [Substrate Material：Silicon（Si）] | 1414 ℃ |
| Thermal Conductivity [Substrate Material：Silicon（Si）；@313K] | 163 @ 313K |
| Thermal Expansion [Substrate Material：Silicon（Si）；@293K] | 2.6 @ 293K |
| Knoop Hardness [Substrate Material：Silicon（Si）] | 1100 kg/mm² |
| Specific Heat Capacity [Substrate Material：Silicon（Si）] | 712.8 J/(kg×K) |
| Dielectric Constant [Substrate Material：Silicon（Si）；@f= 9.37GHz] | 13 @f= 9.37GHz |
| Young's Modulus (E) [Substrate Material：Silicon（Si）] | 130.91 GPa |
| Shear Modulus(G) [Substrate Material：Silicon（Si）] | 79.92 GPa |
| Bulk Modulus(K) [Substrate Material：Silicon（Si）] | 101.97 GPa |
| Poisson Coefficient [Substrate Material：Silicon（Si）] | 0.266 |
| Solubility [Substrate Material：Silicon（Si）] | None |
| Molecular Weight [Substrate Material：Silicon（Si）] | 28.09 g/mol |
Applications
Datasheet
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