Lithium Fluoride Biconcave Lens PLi06-
Lithium fluoride biconcave lenses are infrared materials with a transmission range of 120nm-7000nm, used for thermal imaging, aerospace optics, and laser optics, prisms, and windows. UM OPTICS provide a diameter of 2-150mm and a thickness of 0.12-60mm (with an accuracy of 20-10, 1)/ 10L@633nm ）Lithium fluoride biconcave lenses 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 | 2-150 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 | Lithium Fluoride（LiF） |
| Centering | 3 |
| PV [@632.8nm] | λ/4 |
| Clear Aperture | >90% |
| Coating | Uncoated |
| REACH | Compliant |
| ROHS | Compliant |
| Transmission Range [Substrate Material：Lithium Fluoride（LiF）] | 0.11-7μm |
| Transmittance [Substrate Material：Lithium Fluoride（LiF）；@0.6μm] | >94.8%@0.6μm |
| Reflection Loss [Substrate Material：Lithium Fluoride（LiF）；@0.6μm(both surfaces)] | 5.2%@0.6μm(both surfaces) |
| Absorption Coefficienet [Substrate Material：Lithium Fluoride（LiF）；@4.3μm] | 5.9×10⁻³@4.3μm |
| Structure [Substrate Material：Lithium Fluoride（LiF）] | Cubic Crystal System |
| Cleavage Planes [Substrate Material：Lithium Fluoride（LiF）] | <100> |
| Density [Substrate Material：Lithium Fluoride（LiF）] | 2.639 g/cm³ |
| Melting Point [Substrate Material：Lithium Fluoride（LiF）] | 848 ℃ |
| Thermal Conductivity [Substrate Material：Lithium Fluoride（LiF）；@314K] | 11.3 @ 314K |
| Thermal Expansion [Substrate Material：Lithium Fluoride（LiF）；@283K] | 37.0 @ 283K |
| Knoop Hardness [Substrate Material：Lithium Fluoride（LiF）] | 415 kg/mm² |
| Specific Heat Capacity [Substrate Material：Lithium Fluoride（LiF）] | 1562 J/(kg×K) |
| Dielectric Constant [Substrate Material：Lithium Fluoride（LiF）；@1 MHz] | 7.33 @ 1 MHz |
| Young's Modulus (E) [Substrate Material：Lithium Fluoride（LiF）] | 64.79 GPa |
| Shear Modulus(G) [Substrate Material：Lithium Fluoride（LiF）] | 55.14 GPa |
| Bulk Modulus(K) [Substrate Material：Lithium Fluoride（LiF）] | 62.03 GPa |
| Poisson Coefficient [Substrate Material：Lithium Fluoride（LiF）] | 0.22 |
| Solubility [Substrate Material：Lithium Fluoride（LiF）；@20℃] | 2.7g @ 20℃ |
| Molecular Weight [Substrate Material：Lithium Fluoride（LiF）] | 25.9394 g/mol |
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Datasheet
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Supplier Information
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