Fused Silica Plano-Concave Lens PQu04-
The fused silica plano-concave lens has a plane and a concave spherical surface. The design purpose is to generate negative spherical aberration for beam expansion or increasing focal length to balance the deviation of other lenses. Having high purity and high-temperature melting characteristics, the flat concave lens has excellent transparency and thermal stability. Applied in laser systems, spectrometers, and optical communications. It can be used to control the focusing and collimation of light beams, improve the imaging quality of optical systems, and enhance measurement accuracy. UM OPTICS can provide a flat concave fused silica lens with a diameter of 2-300mm and a thickness of 0.12-60mm.
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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 | Fused Silica |
| PV [@632.8nm] | λ/4 |
| Centering | 3 |
| Clear Aperture | >90% |
| Coating | Uncoated |
| REACH | Compliant |
| ROHS | Compliant |
| Transmission Range [Substrate Material：Fused Silica] | 0.18-2.1μm |
| Refractive Index [Substrate Material：Fused Silica；@0.5876μm] | 1.4585 |
| Density [Substrate Material：Fused Silica] | 2.21 g/cm³ |
| Melting Point [Substrate Material：Fused Silica] | 1900 deg C |
| Thermal Conductivity [Substrate Material：Fused Silica] | 1.35 W/(m×deg C) |
| Thermal Expansion [Substrate Material：Fused Silica] | 4.0*10⁻⁶ |
| Specific Heat Capacity [Substrate Material：Fused Silica] | 0.728*10⁻³ |
| Young's Modulus [Substrate Material：Fused Silica] | 7.36 GPa |
| Shear Modulus [Substrate Material：Fused Silica] | 3.14 GPa |
| Poisson Coefficient [Substrate Material：Fused Silica] | 0.17 |
| Solubility [Substrate Material：Fused Silica] | Insoluble |
Applications
Datasheet
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