K9 Glass Biconcave Lens PG206-
The k9 biconcave lenses have two concave surfaces, allowing light to focus and form clearer images. Used for optical applications that require highly precise focusing, such as microscopes, telescopes, etc. Having high transparency and low dispersion, it can provide clear and high-quality images. It also has good mechanical properties and stability, and can be used for a long time in various environments. UM OPTICS can provide a diameter of 2-300mm and a thickness of 0.12-60mm (accuracy can reach 20-10,1)/ 10L@633nm ）k9 biconcave 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 | 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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