Magnesium Fluoride Biconvex Lens PMg05-
Magnesium fluoride biconvex lens is a type of biconvex lens, which includes an incident surface and an exit surface. It is characterized by a longer focal length in the middle of the lens surface and a shorter focal length at the ends of each transparent surface. Used to gather light from point sources or transmit images to other optical systems. Magnesium fluoride biconvex lenses have good transmittance in the ultraviolet, visible, and infrared fields, and are used in fields such as lasers, infrared optics, ultraviolet optics, and high-energy detectors. Magnesium fluoride is a tough material with good polishing, so it can work to high standards. 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 | 2-200 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 | Magnesium Fluoride（MgF2） |
| Irregularity [@632.8nm] | λ/4 |
| Centering | <3′ |
| Clear Aperture | >90% |
| Coating | Uncoated |
| REACH | Compliant |
| ROHS | Compliant |
| Transmission Range [Substrate Material：Magnesium Fluoride（MgF2）] | 0.12-9μm |
| Transmittance [Substrate Material：Magnesium Fluoride（MgF2）；@0.193-6μm] | >90%@0.193-6μm |
| Refractive Index [Substrate Material：Magnesium Fluoride（MgF2）；@0.13μm] | NO=1.566,Ne=1.568@0.13μm |
| Refractive Index [Substrate Material：Magnesium Fluoride（MgF2）；@5μm] | NO=1.334,Ne=1.343@5μm |
| Reflection Loss [Substrate Material：Magnesium Fluoride（MgF2）；@0.12nm(both surfaces)] | 11.2%@0.12nm(both surfaces) |
| Reflection Loss [Substrate Material：Magnesium Fluoride（MgF2）；@0.22μm(both surfaces)] | 5.7%@0.22μm(both surfaces) |
| Reflection Loss [Substrate Material：Magnesium Fluoride（MgF2）；@1μm(both surfaces)] | 5.1%@1μm(both surfaces) |
| Absorption Coefficienet [Substrate Material：Magnesium Fluoride（MgF2）；@2.7μm] | 40×10⁻³@2.7μm |
| Structure [Substrate Material：Magnesium Fluoride（MgF2）] | square crystal system |
| Cleavage Planes [Substrate Material：Magnesium Fluoride（MgF2）] | <100> |
| Density [Substrate Material：Magnesium Fluoride（MgF2）] | 3.177 g/cm³ |
| Melting Point [Substrate Material：Magnesium Fluoride（MgF2）] | 1255 ℃ |
| Thermal Conductivity [Substrate Material：Magnesium Fluoride（MgF2）；@300K] | 21 //c, 33.6⊥c @ 300K |
| Thermal Expansion [Substrate Material：Magnesium Fluoride（MgF2）；@373k] | 13.7//c, 8.9 ⊥c @ 373k |
| Knoop Hardness [Substrate Material：Magnesium Fluoride（MgF2）] | 415 kg/mm² |
| Specific Heat Capacity [Substrate Material：Magnesium Fluoride（MgF2）] | 1003 J/(kg×K) |
| Dielectric Constant [Substrate Material：Magnesium Fluoride（MgF2）；@1MHz] | 4.87 //c, 5.44⊥c @ 1MHz |
| Young's Modulus (E) [Substrate Material：Magnesium Fluoride（MgF2）] | 138.5 GPa |
| Shear Modulus(G) [Substrate Material：Magnesium Fluoride（MgF2）] | 54.66 GPa |
| Bulk Modulus(K) [Substrate Material：Magnesium Fluoride（MgF2）] | 101.32 GPa |
| Poisson Coefficient [Substrate Material：Magnesium Fluoride（MgF2）] | 0.276 |
| Solubility [Substrate Material：Magnesium Fluoride（MgF2）；@20℃] | 0.002g @ 20℃ |
| Molecular Weight [Substrate Material：Magnesium Fluoride（MgF2）] | 62.3018 g/mol |
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Datasheet
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