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Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence

    Buy cheap Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence from wholesalers
     
    Buy cheap Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence from wholesalers
    • Buy cheap Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence from wholesalers
    • Buy cheap Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence from wholesalers
    • Buy cheap Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence from wholesalers

    Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence

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    Brand Name : LONGWAY
    Model Number : LW1609201426
    Certification : ISO9001
    Price : NEGOTIATION
    Payment Terms : T/T,Western Union,MoneyGram,D/P
    Supply Ability : 50000 Pieces per Month
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    Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence



    Precision Optical Plano Concave Lenses for Beam Expansion and Light Divergence


    1. Material & Fabrication

      • Substrates: Optical glass (N-BK7, SF11), Fused Silica (UV grade), CaF₂ (deep UV), ZnSe/Ge (IR)

      • Precision Standards: λ/4 surface accuracy, ±0.01mm thickness tolerance, <3 arcmin centration error

      • Coatings: Broadband/V-Lambda AR options (>99.5% transmission)

    2. Key Optical Properties

      • Focal Length: Negative (typically -10mm to -1000mm)

      • Surface Quality: 20-10 scratch-dig specification

      • Wavefront Distortion: < λ/2 @ 632.8nm

      • Geometric Feature: Flat (plano) surface + inward-curving (concave) surface

    3. Primary Functions

      • Beam Expansion: Diverges collimated input to widen laser diameter (e.g., pre-collimation in Galilean telescopes)

      • Light Divergence: Creates controlled spreading for uniform illumination

      • Focal Length Reduction: Compensates for convergence in imaging systems

      • Aberration Correction: Counters spherical distortion in multi-lens assemblies

    4. Critical Applications

      • Laser Systems: Beam shaping in Nd:YAG/CO₂ lasers, fiber collimators, and interferometers

      • Imaging Optics: Field flattening for microscopes/telescopes, eyepiece correction

      • Sensing & LiDAR: Divergence control in rangefinders and 3D scanners

      • Illumination: Uniform light distribution in medical/scientific devices

      • Metrology: Wavefront manipulation in interferometric testing


    ItemOptical glass plano concave lens
    MaterialOptical glass, Qurartz glass, Pyrex, borosilicate glass, Float glass
    Diameter Tolerance+0/-0.2 mm
    Thickness Tolerance+/-0.2 mm
    Processedby grinding, polishing
    Surface Quality80/50,60/40
    Material Qualityno scratches and air bubble
    Transmissionabove 90%
    Chamfer0.1-0.3 mm x 45 degree
    Surface CoatingAvailable
    UsagePhotography, Lighting system, Electronic apparatus


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