Biconcave Lens TJFSGXSATJ2010009
Biconcave lenses have two concave surfaces and strong beam divergence, commonly used in laser expansion, aberration compensation, and virtual imaging. Types by category: materials, H-K9L optical glass, UV fused silica (JGS1), calcium fluoride (CaF₂), or zinc selenide (ZnSe); diameter Φ4-200 mm with custom sizes; focal length -5 mm to -500 mm; coatings, uncoated, AR, HR, or beamsplitting. Standard features: finely annealed H-K9L optical glass; design wavelength 587.6 nm (nd=1.5168); diameter tolerance +0.0/-0.1 mm; center thickness tolerance ±0.2 mm; EFL tolerance ±2%; surface irregularity λ/4 at 632.8 nm; centration error 3 arcmin; surface quality 60/40; bevel 0.2 mm × 45°; coating, see product list.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Diameter | 12.70 mm |
| Focal length (EFL) | -12.7 mm |
| Center Thickness Tc | 2.00 mm |
| Edge Thickness Te | 5.65 mm |
| Coating | Antireflection Coating |
| Material | Quartz (JGS1) |
| Surface Quality | 40/20 |
Datasheet
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