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  • Kingwin Optics λ4-λ N-BK7 Plano-concave LensesKingwin Optics λ4-λ N-BK7 Plano-concave Lenses

    λ4-λ N-BK7 Plano-concave Lenses

    High Optical Quality:

    The λ4 surface accuracy ensures precision optical performance, minimizing wavefront distortions and optical aberrations.

    The 40-20 scratch-dig surface quality guarantees excellent surface smoothness, reducing scattering and unwanted diffraction effects.

    Broad Wavelength Range:

    These lenses are typically designed for operation across a wide wavelength range, although the exact range may vary depending on the coating and intended application. N-BK7 glass itself has a transmission range from 350 nm to 2.0 μm (uncoated), making it suitable for both visible and near-infrared applications.

    Material Properties:

    N-BK7 is a high-quality borosilicate crown glass known for its excellent homogeneity, low bubble and inclusion content, and ease of manufacturing.

    It offers a good balance of transmission, durability, and cost-effectiveness, making it a popular choice for many optical components.

    Focal Length and Diverging Ability:

    Plano-concave lenses have a negative focal length, enabling them to diverge collimated beams. This property makes them useful in applications where beam expansion or divergence is required.

    Versatility:

    Available in various diameters, including 6 mm, 9 mm, 1/2″, 25 mm, 1″, and 2″, allowing for flexibility in system design.

    Focal lengths can also vary widely, offering a range of options to suit different applications.

    Antireflection Coatings:

    While the exact coating specifications may not be directly stated as “λ4-λ” in the context of this question, N-BK7 plano-concave lenses can be coated with various antireflection (AR) coatings to minimize reflections and maximize transmission over specific wavelength ranges. This can improve overall optical efficiency.

    Applications: Laser Scanners, Remote Sensing Instruments, Imaging Instruments, Fiber Lasers, Interferometers, etc.

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  • Kingwin Optics λ4-λ N-BK7 Plano-convex LensesKingwin Optics λ4-λ N-BK7 Plano-convex Lenses

    λ4-λ N-BK7 Plano-convex Lenses

    High Optical Homogeneity: N-BK7 glass offers excellent optical clarity and uniformity, ensuring consistent performance and minimal image distortion.

    Broad Transmission Range: These lenses provide good transmission in the visible and near-infrared (NIR) spectrum, making them versatile for various applications.

    Low Cost: N-BK7 is a cost-effective alternative to other materials like UV Fused Silica or Calcium Fluoride, offering high performance at a lower price point.

    Great Resistance to Scratches and Abrasions: The material’s durability ensures long-lasting performance and reduced maintenance, even in demanding environments.

    Low Inclusion Content: The high purity of N-BK7 glass results in fewer inclusions, which translates to better optical quality and less scattering of light.

    Superior Surface Quality (40/20 Scratch/Dig): The surface quality specification of 40/20 ensures minimal surface imperfections, reducing scatter and enhancing image clarity.

    High Precision (λ/4-λ Irregularity): The lenses have a surface irregularity of λ/4 to λ, providing high accuracy in lens shape and reducing optical aberrations for improved focusing.

    Versatile Applications: N-BK7 plano-convex lenses are suitable for a variety of uses, including emitters, detectors, imaging instruments, lasers, and fiber optics.

    Applications: Emitters and Detectors, Imaging Instruments, Lasers, Fiber Optics, etc.

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