Visible light band | optical dome
Infrared band | optical dome
UV band | optical dome
General application | optical dome
Special application | optical dome
Aspheric Lens
Spherical Lens
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Optical Window
Reflecting Mirror
Optical Prism
Infrared (IR) Lens
Large-diameter Visible Lens
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High-Precision Plano-Concave Lenses from China Suppliers - Ideal for Optical Systems | Custom Factory Solutions
Product Description
Core Functions
- Beam Control: Negative focal length diverges collimated light for laser beam expansion (divergence 0.5–5°) or aberration compensation.
- Focal Length Adjustment: Combined with plano-convex lenses to extend focal length for long-range imaging or projection.
Technical Specifications
- Materials: N-BK7 Glass (High transmission in visible range 400–700nm, cost-effective); Fused Silica (Broadband UV-NIR 190nm–2.1μm, low thermal expansion, laser damage-resistant); Custom Materials (Infrared substrates Ge, ZnSe, fluorides CaF₂, MgF₂, etc.).
- Precision: Surface accuracy λ/4–λ/10 (@632.8nm), diameter tolerance ±0.05mm, center thickness ±0.1mm; Clear aperture >90%, scratch/dig 20/10 (upgradable to 10/5).
- Coatings: Single/Multi-layer AR (Covers visible, NIR, or laser wavelengths, e.g., 1064nm, 10.6μm); High-LIDT Coatings (Compatible with high-power lasers >500W).
Applications
- Laser Processing: Beam divergence control before fiber coupling to reduce energy density.
- Optical Imaging: Spherical aberration correction or field curvature compensation in telescopes/microscopes.
- Scientific Instruments: Focal length adjustment in interferometers and spectrometers.
Customization
- Aspheric concave design: Minimizes spherical aberration for uniform beam divergence.
- Non-standard dimensions: Diameter 1–300mm, radius of curvature 5–1000mm.
- Rapid prototyping: Standard materials in 5 business days, custom materials <3 weeks.
Differentiation Highlights
- Material Versatility: Compatible with UV, visible, IR, and THz wavelengths for multi-scenario applications.
- High-Power Compatibility: Fused silica with hard coatings supports CO₂ lasers (10.6μm) and YAG lasers (1064nm) at high energy levels.
Custom & OEM Process
Company introduction
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FAQ
Are you a factory?
Yes, we are a professional manufacturer of optical components. We have more than 20 years of experience in optical cold working.
Can I customize the products based on my requirements?
Yes, we can customize the material, specifications, and optical coating for your optical components based on your specific requirements.
How many days will samples be finished? How about mass products?
Generally, we need 1-2 days to finish the sample production. As for the mass products, the timeline depends on your order quantity.
What is the delivery time?
(1) For inventory: the delivery time is 1-3 working days.
(2) For customized products: the delivery time is 7 to 25 working days according to the quantity.
How do you control the quality?
We perform quality inspections more than four times during the production process, and we can provide the Quality Test Report.
What is your payment term?
We accept T/T or L/C. If you prefer any other payment method, please contact us.