Biconvex Lens DCX205-F20
Biconvex lenses are available in BK7, fused silica, CaF2 and other materials, with custom dimensions and standard sizes. Wavelength-specific AR coatings are available. BK7 suits visible/NIR with low cost and stable performance; fused silica covers DUV/NIR with low thermal expansion for UV/high-power use. Per-surface reflectivity is typically about 4% uncoated and 0.25% coated.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Operating Wavelength Band [Fused silica] | 185-2100nm |
| Dimensional Tolerance [Fused silica] | +0.0/-0.1mm |
| Thickness Tolerance [Fused silica] | +/-0.1mm |
| Effective Aperture [Fused silica] | >85% |
| Focal Length Tolerance [Fused silica; Standard / High Precision] | 5%（Standard）/ 1%（High Precision） |
| Surface Finish [Fused silica; Standard / High Precision] | 40/20（Standard）/ 20/10（High Precision） |
| Aperture [Fused silica] | Power:3λ/ 2 , PV:λ/4 |
| Decentration [Fused silica] | <3 arc min |
| Coating [Fused silica] | Customized to Customer Requirements |
| Diameter [Fused silica] | 12.7 |
| Edge Thickness [Fused silica] | 2 |
| Focal Length [Fused silica] | 20.0 |
Datasheet
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Supplier Information
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