High-Precision Meniscus Lenses from China Suppliers - Advanced Optical Systems Factory with Minimal Aberration

1. Core Functions

• Positive Meniscus Lens: Larger convex curvature, smaller concave curvature for focal lengths 2.5–10, reduces spot size and enhances focusing (e.g., high-power lasers or microscope objectives).
• Negative Meniscus Lens: Larger concave curvature, compatible with IR materials (Ge, ZnSe), minimizes spherical aberration in beam expansion for fiber coupling or wide-FOV imaging.

2. Technical Specifications

• Materials:
  • H-K9L Glass: High transmission in visible range (400–700nm), cost-effective;
  • Fused Silica: UV-NIR (190nm–2.1μm) compatibility, thermal and laser damage resistance.
• Precision:
  • Surface flatness λ/5 (@633nm), eccentricity ≤1 arcmin, focal length tolerance <±1%;
  • Diameter tolerance +0.00/-0.02mm, thickness ±0.05mm, scratch/dig 40/20 (upgradable to 20/10).
• Coatings:
  • Anti-Reflective (AR): Single/dual-sided for 355nm–2μm wavelengths;
  • High-LIDT Coatings: Compatible with CO₂ lasers (10.6μm) or femtosecond systems.

3. Applications

• Laser Processing: Focus laser beams to micron-level spots using positive meniscus lenses;
• Infrared Imaging: Negative meniscus lenses with Ge substrates expand thermal camera FOV;
• Optical Correction: Combine with plano-convex/concave lenses to compensate aberrations.

4. Customization

• Aspheric Design: Reduces spherical aberration for uniform beam profiles;
• Special Dimensions: Diameter 2–200mm, radius of curvature 10–1000mm, asymmetric shaping;
• Fast Turnaround: Standard orders in 7 days, IR materials <4 weeks.