Zinc Selenide Plano-Concave Lens PZE04-
Zinc selenide plano-concave lens has a flat surface and a concave back. Design requirements that can be used to change the size of imaging, such as converting a point spot into a line spot, or changing the height of the image without changing its width. UM OPTICS can provide Zinc selenide planoconcave lenses with a diameter of 2-300mm and a thickness of 0.12-60mm. They 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 | Zinc Selenide（ZnSe） |
| PV [@632.8nm] | λ/4 |
| Centering | <3′ |
| Clear Aperture | >90% |
| Coating | Uncoated |
| REACH | Compliant |
| ROHS | Compliant |
| Crystal Structure [Substrate Material：Zinc Selenide（ZnSe）] | Cubic |
| Density [Substrate Material：Zinc Selenide（ZnSe）] | 5.27 g/cm³ |
| Resistivity [Substrate Material：Zinc Selenide（ZnSe）] | ～10¹² |
| Melting Point [Substrate Material：Zinc Selenide（ZnSe）] | 1525 ℃ |
| Chemical Purity [Substrate Material：Zinc Selenide（ZnSe）] | 99.9996 % |
| Thermal Expansion [Substrate Material：Zinc Selenide（ZnSe）；@273k] | 7.1*10⁻⁶@273k |
| Thermal Expansion [Substrate Material：Zinc Selenide（ZnSe）；@373k] | 7.8*10⁻⁶@373k |
| Thermal Expansion [Substrate Material：Zinc Selenide（ZnSe）；@473k] | 8.3*10⁻⁸@473k |
| Thermal Conductivity [Substrate Material：Zinc Selenide（ZnSe）；@298k] | 18.0@298k |
| Specific Heat Capacity [Substrate Material：Zinc Selenide（ZnSe）；@298k] | 0.339@298k |
| Knoop Hardness [Substrate Material：Zinc Selenide（ZnSe）] | 110 kg/mm² |
| Bending Strength [Substrate Material：Zinc Selenide（ZnSe）] | 55 Mpa |
| Young's Modulus [Substrate Material：Zinc Selenide（ZnSe）] | 67.2 GPa |
| Poisson's Coefficient [Substrate Material：Zinc Selenide（ZnSe）] | 0.28 |
| Transmission Range [Substrate Material：Zinc Selenide（ZnSe）] | 0.5-22μm |
| Refractive index inhomogeneity △n/n [Substrate Material：Zinc Selenide（ZnSe）；@632.8μm] | <3*10⁻⁶@632.8μm |
| Absorption Coefficient [Substrate Material：Zinc Selenide（ZnSe）；@1300nm] | 5.0*10⁻³@1300nm |
| Absorption Coefficient [Substrate Material：Zinc Selenide（ZnSe）；@2700nm] | 7.0*10⁻⁴@2700nm |
| Absorption Coefficient [Substrate Material：Zinc Selenide（ZnSe）；@3800nm] | 4.0*10⁻⁴@3800nm |
| Absorption Coefficient [Substrate Material：Zinc Selenide（ZnSe）；@5250nm] | 4.0*10⁻⁴@5250nm |
| Absorption Coefficient [Substrate Material：Zinc Selenide（ZnSe）；@10600nm] | 5.0*10⁻⁴@10600nm |
| Thermal light coefficient [Substrate Material：Zinc Selenide（ZnSe）；298-358k；@632.80nm] | 1.07*10⁻⁴@632.80nm |
| Thermal light coefficient [Substrate Material：Zinc Selenide（ZnSe）；298-358k；@1150nm] | 7.0*10⁻⁵@1150nm |
| Thermal light coefficient [Substrate Material：Zinc Selenide（ZnSe）；298-358k；@3390nm] | 6.2*10⁻⁵@3390nm |
| Thermal light coefficient [Substrate Material：Zinc Selenide（ZnSe）；298-358k；@10600μm] | 6.1*10⁻⁵@10600μm |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@620nm] | 2.5994 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@10600nm] | 2.4028 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@1000nm] | 2.4892 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@13000nm] | 2.385 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@3800nm] | 2.4339 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@14600nm] | 2.3705 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@5000nm] | 2.4295 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@16600nm] | 2.3487 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@7000nm] | 2.4218 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@17800nm] | 2.3333 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@9000nm] | 2.4122 |
| Refractive Index [Substrate Material：Zinc Selenide（ZnSe）；@18200nm] | 2.3278 |
| Damage Threshold [Substrate Material：Zinc Selenide（ZnSe）；Incidence Mode：Normal Incidence] | >20 J/cm² |
| Damage Threshold [Substrate Material：Zinc Selenide（ZnSe）；Incidence Mode：Brewster's Corner] | >15 J/cm² |
Applications
Datasheet
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