Leave Your Message
  • Phone
    +86 13912496525 +86 15252965708
  • E-mail
    alhazen.china@outlook.com chenhuaxu531@gmail.com
  • WhatsApp
    +86 18012377462
  • WeChat
    sreg
    • Leave Your Message
    High-Index BK7 Biconvex Lens for UV-Vis-NIR Optics from China Suppliers and Factory - <±1% Focal Length Tolerance
    Hot Products
    Products Categories
    Featured Products
    Precision Optical Components for Advanced Mechanical Systems

    Precision Optical Components for Advanced Mechanical Systems
    ‌Precision Custom Optical Prism

    ‌Precision Custom Optical Prism
    ‌Precision Custom Cylindrical Lens for Optics

    ‌Precision Custom Cylindrical Lens for Optics
    Precision BK7 Right Angle Prism for Laser/Optical Systems

    Precision BK7 Right Angle Prism for Laser/Optical Systems
    ‌Precision Aspheric Lens for Laser/Optical Systems with AR Coating

    ‌Precision Aspheric Lens for Laser/Optical Systems with AR Coating
    Optical Dome, Var. Materials

    Optical Dome, Var. Materials
    ‌N-BK7 Anti-Reflective Rhombic Prism

    ‌N-BK7 Anti-Reflective Rhombic Prism
    Lens Manufacturing

    Lens Manufacturing
    High-Precision Plano-Concave Lens for Optical Systems

    High-Precision Plano-Concave Lens for Optical Systems
    High-Precision Penta Prism for Enhanced Optical Systems

    High-Precision Penta Prism for Enhanced Optical Systems
    0102030405
    4 (2).png
    4 (1).png
    4 (3).png
    4 (4).png
    4 (5).png
    4 (6).png
    4 (7).png
    4 (8).png
    4 (9).png
    4 (10).png
    4 (11).png
    4 (12).png
    4 (13).png
    4 (14).png
    4 (15).png
    4 (16).png
    4 (17).png
    4 (18).png
    4 (19).png
    4 (20).png
    4 (2).png
    4 (1).png
    4 (3).png
    4 (4).png
    4 (5).png
    4 (6).png
    4 (7).png
    4 (8).png
    4 (9).png
    4 (10).png
    4 (11).png
    4 (12).png
    4 (13).png
    4 (14).png
    4 (15).png
    4 (16).png
    4 (17).png
    4 (18).png
    4 (19).png
    4 (20).png

    High-Index BK7 Biconvex Lens for UV-Vis-NIR Optics from China Suppliers and Factory - <±1% Focal Length Tolerance

    ALHAZEN’s high-index BK7 biconvex lenses are expertly crafted in our China factory, featuring dual convex surfaces designed to meet strict optical specifications. With a focal length tolerance of <±1%, a clear aperture of ≥95%, and surface flatness better than <λ/5 (@633nm), these lenses ensure exceptional performance for a variety of applications. Our lenses are compatible with UV-Vis-NIR wavelengths ranging from 250–2000nm, making them ideal for laser focusing, imaging relays, and use in precision optical instruments. As a leading supplier of high-quality optical components, ALHAZEN provides reliable solutions tailored to your needs
      Contact us
      Product Detail

      High-Index BK7 Biconvex Lens for UV-Vis-NIR Optics
      Core Functions
      • Precision Focusing: Optimized conjugate ratio (0.2–5) minimizes spherical/chromatic aberrations.
      • Broadband Transmission: BK7 covers 250–2000nm with >90% transmission (VIS: 400–700nm).
      • Low Reflection Loss: Single/dual-sided AR or BBAR coatings with <0.5% reflectivity per surface.
      Technical Specifications
      • Materials & Design: N-BK7 Glass (Refractive index 1.5168 @587.6nm, Abbe number 64.17, Grade A purity); High-Index Options like LaK9, SF11 (n >1.7) for thinner lens designs.
      • Precision: Surface flatness <λ/5 (@633nm), local figure error <λ/10; Diameter tolerance +0.00/-0.02mm, CT tolerance ±0.05mm, eccentricity ≤1 arcmin; Surface quality 40-20 scratch/dig (upgradable to 20-10).
      • Coatings: Single-Wavelength AR (Customized for 355nm, 532nm, 1064nm with <0.25% reflectivity); Broadband BBAR (Covers 300–1500nm with <0.75% average reflectivity).
      Applications
      • Laser Systems: Collimation/focusing in fiber lasers for precision machining.
      • Imaging Relays: Objective lenses in microscopes/telescopes for 1:1 conjugate imaging.
      • Spectroscopy: Focusing optics in FTIR systems to enhance SNR.
      Customization
      • Flexible Parameters: 5–260mm diameter, 1–5000mm focal length with ±0.5% radius tolerance.
      • Pre-Assembled Kits: Integrated with mounts/alignment frames for plug-and-play use.
      • Fast Turnaround: Standard orders in 7 days, special requests <3 weeks.
      Differentiation Highlights
      ● Nanometer-Level Precision: Profilometer QC guarantees ±0.02mm diameter tolerance for micro-optics.
      ● High-Index Versatility: Materials like SF11 enable short focal lengths for compact optical designs.
      Custom & OEM Process
      Materials capabilities

      Materials capabilities

      Coating capabilities

      Coating capabilities

      Advanced Equipment

      Advanced Equipment

      Custom Sizes and Shapes

      Custom Sizes and Shapes

      Quality Assurancetesting

      Quality Assurancetesting

      Experienced Team

      Experienced Team

      Company introduction
      Freight
      Freight Details
      Payment
      Payment Details
      FAQ
      Q1: Are you a factory?

      Yes, we are a professional manufacturer of optical components, we have more than 20 years experience in optical cold working.

      Q2: What is the MOQ of your products?

      No MOQ for customer if our product is in stock, or 1-10pcs.

      Q3: Can I custom the products based on my requirement?

      Yes, we can custom the material, specifications and optical coating for your optical components as your requirement.

      Q4: 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, it depends on your order quantity.

      Q5: What's 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.

      Q6: How do you control the quality?

      More than four times quality inspect during production process, we can provide the Quality test report.