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China, Chinese Dia18.0mm N-Sf11 Ar Coated Optical Spherical Lens Plano Concave Lens for Telescope1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Optical Lens InstrumentOptical LensConcave LensOptical Lens
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Product DescriptionSpecificationProduct:Optical Plano Concave LensMaterials:Optical Grade Glass, N-BK7, UV fused silica, CaF2, ZnSe, ZnS, Si, Sapphire, etc.Diameter:1.5mm-550mmDiameter Tolerance:±0.05 mm (precision ±0.01mm)Thickness:0.5mm-100mmThickness Tolerance:±0.05mm (precision ±0.01mm)Focal Length Tolerance:±1 %Surface Quality:20-10 scratch-dig (up to 10-5 available)Flatness:PV<1/4L@ 633nm (up to 1/10L); RMS<1/40LSurface Roughness:Rq<0.5nmCentration:<3 arcmin (1 arcmin precision)Center:ETV<0.008mmChamfer:<0.1mmClear Aperture:≥90 % of DiameterAOI:0-55degCoatings:single-layer MgF2, broadband VIS, VIS-NIR, NIR I/II, telecom, or high-energy laser V-coatings (266nm, 355nm, 532nm, 1064nm, etc.)Key ConfigurationsOptical Plano Concave Lens1. Optical Performance? Focal length: -10 mm to -500 mm, ±1 % tolerance → predictable beam divergence? Surface figure: λ/4 @ 589 nm; 40-20 scratch-dig → low scatter & wave-front error? Transmittance: 99.5 % with optional broadband AR coatings → minimal ghosting & energy loss 2. Materials & Coatings? Standard: N-BK7 glass, 350 nm – 2 μm, high mechanical stability? Upgrade: UV-grade fused silica, 185 nm – 2.1 μm, laser-damage resistant? Optional hydrophobic AR coating → oil- & water-repellent, easy clean for factory use 3. Mechanical Precision? Diameter: +0 / –0.10 mm? Center thickness: ±0.10 mm? Centration error: ≤ 3 arc-min → tight alignment in multi-element stacksApplicationsOptical Plano Concave Lens1. Laser Beam ExpansionUsed in laser marking and material processing systems to expand collimated laser beams to desired diameters. Provides controlled divergence for uniform energy distribution, improving engraving precision and reducing thermal damage. 2. Optical System CorrectionCompensates for spherical aberration in imaging setups (e.g., microscopes, telescopes). Adjusts focal planes without compromising image sharpness. 3. Medical & Metrology EquipmentEnables precise beam shaping in laser Doppler velocimeters and spectroscopy systems. Low distortion properties ensure high optical fidelity for diagnostic tools.InspectionsProduction LineCompany HistoryFAQQ: What are your main products?A: Optical Components: Aspherical Lenses, Spherical Lenses, Cylindrial Lenses, Lens Assemblies, Optical Windows, Optical Mirrors, Optical Prisms, Optical Filters, and Other Special Shaped Optics...... Q: What's your MOQ?A: Normally one piece. If more, we can talk about discount. You can ship with other parts together .Q: How about the delivery time?A: For stocks, within one week after the payment. As to customized products, the delivery time will be negotiated according to your requirements. Q: Can i get a sample to check the quality?A: YES, we are glad to provide samples for your test. And there is discount for Trade Assurance Sample Order. Q: Can you offer OEM service?A: YES. We will custom the material, specifications and optical coatings for your optical components as your requirements. Q: How to pay?A: T/T, L/C, Western Union, Cash, Credit Card, Paypal, Alipay, MoneyGram, Assurance payment...... Q: What's the way of shipping?A: We accept DHL, Fedex, TNT, UPS, EMS, SF and etc. If you have your own express number, it's great. Q: How to guarantee the quality of your products? A: 1) Strict detection during each production process. 2) Advanced metrology solutions: ZYGO, Mitutoyo, Agilent, TAYLOR HOBSON, TRIOPTICS, MOELLER-WEDEL.....3) Strict inspection on products before shipment and intact product packaging ensured. Q: Any other good service your company can provide?A: 24-hour after-sale service and long-time maintenance......Accepted delivery terms: FOB, CIF, EXW, DDU, DDP, Express..... Accepted payment currencies: USD, EUR, RMB...... Accepted Languages: English, Japanese, Chinese, Spanish, Russian.....
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