K9 Glass Plano-Convex Lens PG203-
K9 plano-convex lens is a lens with a flat convex surface shape. Used in optical applications such as laser systems, spectrometers, optical communications, etc., for converging or collimating beams, as well as changing the focusing characteristics of beams. It has the characteristics of high purity, high transparency, thermal stability, and low refractive index, making it exhibit good performance in the field of optical applications. The design of a planar convex lens allows parallel beams of light to converge at one point, and manufacturing requires precise machining and polishing processes to ensure its surface quality and optical performance. Usually, cutting, grinding, polishing and other processing steps are used to obtain the desired shape and accuracy. Meanwhile, in order to improve transmittance and anti reflection performance, coating treatment is usually required. 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 | 2-300 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 | 40-20 |
| Diameter Tolerance | +0.0/-0.1 |
| Thk Tolerance | ±0.1 mm |
| Substrate Material | K9 |
| Irregularity [@632.8nm] | λ/4 |
| Centering | <3′ |
| Clear Aperture | >90% |
| Coating | Uncoated |
| REACH | Compliant |
| ROHS | Compliant |
| Transmission Range [Substrate Material：K9] | 0.35-2μm |
| Refractive Index [Substrate Material：K9；@587.5618nm] | 1.5168@587.5618nm |
| Refractive Index [Substrate Material：K9；@10.6μm] | 3×10⁻²@10.6μm |
| Reflection Loss [Substrate Material：K9；@587.5618nm(both sides)] | 8.1%@587.5618nm(both sides) |
| Density [Substrate Material：K9] | 2.51 g/cm³ |
| Melting Point [Substrate Material：K9] | 559 ℃ |
| Thermal Conductivity [Substrate Material：K9] | 1.114 W/(m•deg C) |
| Thermal Expansion [Substrate Material：K9；-30/+70 degC] | 7.1*10⁻⁶ |
| Specific Heat Capacity [Substrate Material：K9] | 0.858*10³ |
| Young's Modulus(E) [Substrate Material：K9] | 82 GPa |
| Bulk Modulus(K) [Substrate Material：K9] | 34 GPa |
| Poisson Coefficient [Substrate Material：K9] | 0.206 |
| Solubility [Substrate Material：K9] | None |
Applications
Datasheet
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Supplier Information
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