Lithium Fluoride Plano-Convex Lens PLi03-
Lithium fluoride plano-convex lenses have a plane and a convex surface, commonly used to change the shape and size of a beam of light. Applied in beam expansion, imaging, beam collimation, focusing collimation, beam collimation point light sources, etc. Lithium fluoride has a wide transmission band (110-6600nm) and high transmittance, making it particularly suitable for manufacturing infrared lenses and windows. At the same time, it also has excellent infrared characteristics. In the infrared band, especially in the mid to far infrared to long wave infrared band (such as 3-5 μ m and 8-14 μm), lithium fluoride has a high transmittance, so it is often used as a window material for infrared lasers and infrared night vision devices. It 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 | 2-100 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） |
| PV [@632.8nm] | λ/4 |
| Centering | <3′ |
| 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 |
Applications
Datasheet
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