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Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools

    Buy cheap Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools from wholesalers
     
    Buy cheap Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools from wholesalers
    • Buy cheap Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools from wholesalers
    • Buy cheap Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools from wholesalers
    • Buy cheap Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools from wholesalers

    Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools

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    Brand Name : LONGWAY
    Model Number : LW16092213
    Certification : ISO9001
    Price : negociation
    Payment Terms : D/P,T/T,Western Union
    Supply Ability : 35000 Piece/Pieces per Month
    • Product Details
    • Company Profile

    Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools



    Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools


    1. Material & Manufacturing

    • Optical Substrate: Schott N-BK7 borosilicate glass (standard reference 517642)

    • Surface Precision:

      • λ/4 surface accuracy @ 632.8nm

      • 60-40 scratch-dig specification

    • Coating Options: Broadband AR (MgF₂ or multilayer) for >99.5% peak transmission


    2. Critical Properties

    • Optical Performance:

      • >92% transmission (350nm–2.0μm uncoated)

      • Abbe number 64.2 (minimizes chromatic aberration)

    • Thermal/Mechanical Stability:

      • CTE: 7.1 × 10⁻⁶/K

      • Knoop hardness: 610 kg/mm²

    • Precision Tolerances:

      • Focal length: ±1%

      • Center thickness: ±0.05 mm

      • Centration: < 3 arcminutes


    3. Core Functions

    • Beam Convergence: Short focal lengths (10–200mm) for high-power focusing

    • Aberration Correction: Bi-convex design reduces spherical distortion vs. plano-convex alternatives

    • Collimation: Converts point sources to parallel light for illumination systems

    • Image Magnification: 2X–20X capability for detailed inspection


    4. Professional Applications

    • Microscopy Systems:

      • Objective lenses in biological/industrial microscopes

      • Condenser optics for Köhler illumination

    • Laser Tools:

      • Focusing lenses for medical lasers (dermatology/surgery)

      • Beam expanders in fiber laser cutters

    • Industrial Equipment:

      • Barcode scanner optics

      • Machine vision inspection lenses

    • Scientific Instruments:

      • Telescope eyepieces

      • Spectrometer collimators



    Nameoptical glass

    Material

    Optical Glass,Bk-7,Pyrex,Fused Silica,Sapphire,quartz
    Diameter Tolerance+0/-0.2 mm
    Thickness Tolerance+/-0.2 mm
    Cler Apertureover 90%
    Flatness^/4 @632.8nm
    Surface Quality80/50~10/5 scratch and dig
    Transmissionabove 92%
    Chamfer0.1-0.3 mm x 45 degree
    Focal Length Tolerance+/-2%
    Back Focal Length Tolerance+/-2%
    Coatingavailable
    Usage

    opticl system, photographic sysem, Lighting system,Electronic apparatuse.g.laser,camera,monitor,projector,magnifier,

    telescope,polarizer,electronic instrument,led etc.






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