Barium Fluoride Meniscus Lens PBa07-
Barium fluoride meniscus lenses have a convex surface on one side and a concave surface on the other, used for applications such as beam collimation, focusing, and imaging. It has high hardness, resistance to mechanical and thermal shock, and good transmittance in the ultraviolet, visible, and infrared fields. Used in lenses, beam splitters, filters, prisms, and window sheets in low-temperature refrigeration imaging, aerospace optics, and laser optical systems. UM OPTICS provides a diameter of 2-300mm and a thickness of 0.12-60mm (with an accuracy of 20-10,1)/ 10L@633nm ）Barium fluoride meniscus lenses.
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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 | Barium Fluoride（BaF2） |
| Irregularity [@632.8nm] | λ/4 |
| Centering | 3 |
| Clear Aperture | >90% |
| Coating | Uncoated |
| REACH | Compliant |
| ROHS | Compliant |
| Transmission Range [Substrate Material：Barium Fluoride（BaF2）] | 0.15-14μm |
| Transmittance [Substrate Material：Barium Fluoride（BaF2）；@0.35nm-10.8μm] | >94%@0.35nm-10.8μm |
| Refractive Index [Substrate Material：Barium Fluoride（BaF2）；@2.58μm] | 1.462@2.58μm |
| Refractive Index [Substrate Material：Barium Fluoride（BaF2）；@5μm] | 1.45@5μm |
| Reflection Loss [Substrate Material：Barium Fluoride（BaF2）；@2.58μm(both surfaces)] | 6.8%@2.58μm(both surfaces) |
| Reflection Loss [Substrate Material：Barium Fluoride（BaF2）；@5μm(both surfaces)] | 6.5%@5μm(both surfaces) |
| Reflection Loss [Substrate Material：Barium Fluoride（BaF2）；@10.35μm(both surfaces)] | 5.3%@10.35μm(both surfaces) |
| Absorption Coefficienet [Substrate Material：Barium Fluoride（BaF2）；@6μm] | 3.2×10⁻⁴@6μm |
| Structure [Substrate Material：Barium Fluoride（BaF2）] | Cubic Crystal System |
| Cleavage Planes [Substrate Material：Barium Fluoride（BaF2）] | <111> |
| Density [Substrate Material：Barium Fluoride（BaF2）] | 4.89 g/cm³ |
| Melting Point [Substrate Material：Barium Fluoride（BaF2）] | 1386 ℃ |
| Thermal Conductivity [Substrate Material：Barium Fluoride（BaF2）；@286K] | 11.72 @ 286K |
| Thermal Expansion [Substrate Material：Barium Fluoride（BaF2）；@273K] | 18.1 @ 273K |
| Knoop Hardness [Substrate Material：Barium Fluoride（BaF2）] | 82 kg/mm² |
| Specific Heat Capacity [Substrate Material：Barium Fluoride（BaF2）] | 410 J/(kg×K) |
| Dielectric Constant [Substrate Material：Barium Fluoride（BaF2）；@1 MHz] | 7.33 @ 1 MHz |
| Young's Modulus (E) [Substrate Material：Barium Fluoride（BaF2）] | 53.07 GPa |
| Shear Modulus(G) [Substrate Material：Barium Fluoride（BaF2）] | 25.4 GPa |
| Bulk Modulus(K) [Substrate Material：Barium Fluoride（BaF2）] | 56.4 GPa |
| Poisson Coefficient [Substrate Material：Barium Fluoride（BaF2）] | 0.343 |
| Solubility [Substrate Material：Barium Fluoride（BaF2）；@20℃] | 1.7g @ 20℃ |
| Molecular Weight [Substrate Material：Barium Fluoride（BaF2）] | 175.3238 g/mol |
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Datasheet
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