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G2 Laser Lens
$11.99
G2 Laser Lens (Single-Element Short-Focal Collimating/Focusing Lens)
Overview
High-efficiency single-element aspheric glass lens optimized for maximum power transmission from diode lasers. Designed for close-range cutting, engraving, and burning applications where power density and small spot size are prioritized over low divergence.
Key Specifications
Parameter | Value |
Lens Type | Single-element aspheric |
Glass Material | L-BAL35 (or equivalent optical glass) |
Effective Focal Length (EFL) | 4.02 mm |
Front Focus | 4.02 mm |
Back Focus | 4.8 mm |
Working Distance (typical) | ~2.4 mm (from lens surface) |
Optimal Focal Range (to workpiece) | 5–30 mm (best ~8–11 mm / 10.5 mm typical) |
Clear Aperture / Lens Diameter | ~6.33 mm |
Mount Thread | M9 × 0.5 mm |
Housing Length | ~10 mm |
Housing Material | Brass or aluminum (gold or black finish common) |
Wavelength Range | 400–700 nm (broadband AR coating; optimized for 405–520 nm) |
Optical Transmission | 94–98+% (typically ≥95% at 445 nm) |
Numerical Aperture (NA) | ~0.6 |
Structure | Monolithic single element |
Compatible Laser Power | 100 mW – 15 W+ diode modules |
Quantity