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    AI Overview
    Optical Glass Rhombic Diamond Diagonal Rhomboid Rhombus ...
    BK7 glass rhomboid prisms are precision optical components used to displace a laser beam or optical axis laterally without changing its direction or inverting the image. Made from high-quality, cost-effective N-BK7 borosilicate glass, they offer excellent transmission from 350 nm to 2.0 µm. They typically feature a
    45∘
    −90∘
    −45∘
     geometry and rely on Total Internal Reflection (TIR) to provide high-tolerance, parallel displacement. 
    Key Features and Applications 
    • Beam Displacement: Ideal for applications requiring precise lateral beam shifts without affecting beam path direction.
    • Image Orientation: Displaces the optical axis without reversing or inverting the image, making them suitable for image-rotation systems.
    • Material Properties: N-BK7 offers high homogeneity, low bubble/inclusion content, and high resistance to environmental factors.
    • Surface Quality & Coating: Common specifications include
      𝜆
      /4
       or
      𝜆
      /10
       surface flatness. They are often sold uncoated (relying on TIR) but can be coated for specific, demanding applications.       
    Typical Specifications (e.g., Edmund Optics 12.5mm Prism) 
    • Material: N-BK7 Schott Glass
    • Dimensional Tolerance:
      ±0.1
      mm
    • Surface Quality: 40-20 Scratch & Dig
    • Angular Tolerance:
      ±5plus or minus 5
      ±5
       arcsec       
    These prisms are common in optical instruments, laser systems, and imaging systems, providing a robust solution for displacement. 
    • Rhomboid Optical Prisms - GlobalSpec
      Rhomboid Optical Prisms · Prism Material: BK7 Glass; UV Grade Fused Silica · Surface Flatness: λ/10.
      GlobalSpec
    • Optical rhomboid prism - Altechna - fused silica / BK7 - DirectIndustry
      Description. The ALTECHNA Rhomboid Prisms are made up of a material of BK7, UVFS, TF10, IRFS, and FS. This device is used for imag...
      DirectIndustry
    • Rhomboid Prisms | Knight Optical - Stock & Custom Options
      Typically manufactured from N-BK7 and relying on total internal reflection (TIR), these prisms can also be coated to extend the an...
      Knight Optical
    Show all
    • Rhomboid Optical Prisms - GlobalSpec
      Rhomboid Optical Prisms · Prism Material: BK7 Glass; UV Grade Fused Silica · Surface Flatness: λ/10.
      GlobalSpec
    • Optical rhomboid prism - Altechna - fused silica / BK7 - DirectIndustry
      Description. The ALTECHNA Rhomboid Prisms are made up of a material of BK7, UVFS, TF10, IRFS, and FS. This device is used for imag...
      DirectIndustry
    • Optical Glass bk-7 Right Angle Prism, Precision Optics - Amazon.com
      Ideal for laboratories, educational demonstrations, and professional optical systems, this prism serves as a fundamental building ...
      Amazon.com
    • Rhomboid Prisms | Knight Optical - Stock & Custom Options
      Typically manufactured from N-BK7 and relying on total internal reflection (TIR), these prisms can also be coated to extend the an...
      Knight Optical
    • Comparison of Different Materials for Custom Optical Prisms
      Oct 24, 2025 — BK7 glass is a common pick for custom optical prisms. It lets visible light pass through very well. The best range is from 350 nm ...
      Band Optics
    • PRK1542 N-BK7 Rhomboid Prism; 16 x 15 x 42 mm Uncoated
      PRK1542 N-BK7 Rhomboid Prism; 16 x 15 x 42 mm Uncoated. The PRK1542 N-BK7 Rhomboid Prism is a high-quality optical component sourc...
      3DOptix
    • Reflective Prisms | Find and Compare Optical Prisms
      50mm, Uncoated, Rhomboid Prism. Product Code: #49-420. Wavelength Range: 350 - 2200 nm. Coating: Uncoated. Dimensions: 50 mm. Leng...
      MEETOPTICS
    • 12.5mm, Uncoated, Rhomboid Prism - Edmund Optics
      Specifications * Length (mm): 12.50. Dimensional Tolerance (mm): ±0.1. * Angle Tolerance (arcsec): ±5. Beam Deviation (arcsec): ±3...
      Edmund Optics
    • Understanding Rhomboid Prisms: A Comprehensive Guide
      Sep 15, 2025 — Key Features of Rhomboid Prism Light Deflection: It deflects the optical path without changing the image's orientation or position...
      MOK Optics
    • Optical Rhomboid Prisms - Yutai Optics
      Rhomboid（Diamond/Rhombus) prisms are commonly used to displace a laser beam without changing its direction. In imaging application...
      Yutai Optics
    • Schott N-BK7 Glass Explained: Why It is the Gold Standard
      Jan 13, 2026 — Reliable optical clarity across visible and near‑infrared ranges. Predictable behaviour due to homogeneity and low dispersion. Dur...
      UQG Optics
    • N-BK7 and BK7 - Mindrum Precision
      BK7 and N-BK7 are high purity, low cost borosilicates with excellent optical properties, making them a frequent choice for optics,
      Mindrum Precision
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    My Ad Center

    Web results

    Custom BK7 Glass Rhomboid Prism, ...


    UNI Optics
    https://www.uni-optics.com › bk7-glass-rhomboid-prism...
    UNI Optics
    https://www.uni-optics.com › bk7-glass-rhomboid-prism...
    The Rhomboid prism application for rhomboid-prism is controlling and redirecting the optical path without affecting the image direction. They can be used to ...

    BK7 Glass Rhomboid Prism


    HG Optronics.,INC.
    https://www.hgoptronics.com › bk7-glass-rhomboid-pri...
    HG Optronics.,INC.
    https://www.hgoptronics.com › bk7-glass-rhomboid-pri...
    The Rhomboid prism application for rhomboid-prism is controlling and redirecting the optical path without affecting the image direction.

    PRK1542 N-BK7 Rhomboid Prism; 16 x 15 x 42 mm ...


    3DOptix
    https://www.3doptix.com › optics › prism › knight-optical
    3DOptix
    https://www.3doptix.com › optics › prism › knight-optical
    This prism, measuring 16 x 15 x 42 mm, is made from N-BK7 Schott, a popular material in the optical industry due to its excellent optical properties.Read more

    Comparison of Different Materials for Custom Optical Prisms


    Band Optics
    https://www.band-optics.com › News & Events › blog
    Band Optics
    https://www.band-optics.com › News & Events › blog
    Oct 24, 2025 — BK7 glass is a common pick for custom optical prisms. It lets visible light pass through very well. The best range is from 350 nm to 2.0 µm. Its ...Read more

    Rhomboid Prisms | Knight Optical - Stock & Custom Options


    Knight Optical
    https://www.knightoptical.com › stock › rhomboid-pris...
    Knight Optical
    https://www.knightoptical.com › stock › rhomboid-pris...
    Typically manufactured from N-BK7 and relying on total internal reflection (TIR), these prisms can also be coated to extend the angular operating range. In ...Read more
    $86.00 · £25 delivery · 14-day returns
    Missing: Glass ‎| Show results with: Glass

    Optical Glass bk-7 Right Angle Prism, Precision Optics


    Amazon.com
    https://www.amazon.com › Optical-Glass-Right-Precisio...
    Amazon.com
    https://www.amazon.com › Optical-Glass-Right-Precisio...
    Material : BK7 optical glass · Clear Aperture : ≥ 90% of central area · Angle Tolerance : ±3 arcminute · Surface Flatness : λ/4 to at 632.8 nm · Surface Quality : ...Read more
    People also ask
    What is the difference between bk4 and BK7 prisms?
    An error has occurred. Please try again later.
    What is a rhomboid prism?
    Description. Rhomboid prism is commonly used to displace a laser beam without changing its direction. In imaging applications, rhomboid prism will displace the optical axis without inverting the image. The lateral displacement is equal to the length of the prism (specified by dimension D).

    Rhomboid Prisms -CHUO PRECISION INDUSTRIAL CO.,LTD.- - 中央精機


    中央精機
    https://www.chuo.co.jp › english › contents › list
    中央精機
    https://www.chuo.co.jp › english › contents › list
    What type of glass is BK7?
    optical borosilicate-crown glass
    N-BK7 is a very pure universal optical borosilicate-crown glass made by SCHOTT. It is one of the most common standard glass types used to produce high-quality optics, mainly for the visible spectrum. The relatively hard material consists of the purest raw ingredients.Feb 18, 2026

    N-BK7 | Optical borosilicate-crown glass from SCHOTT | BK 7


    Präzisions Glas & Optik GmbH
    https://www.pgo-online.com › intl › BK7
    Präzisions Glas & Optik GmbH
    https://www.pgo-online.com › intl › BK7
    What is the difference between fused silica and BK7?
    An error has occurred. Please try again later.

    Web results

    Understanding Rhomboid Prisms: A Comprehensive Guide


    MOK Optics
    https://mokoptics.com › Blog
    MOK Optics
    https://mokoptics.com › Blog
    Material Composition: Typically made of optical glass such as BK7, K9, or UV-fused silica, ensuring high transparency and minimal light loss. The Science Behind ...Read more

    Reflective Prisms | Find and Compare Optical Prisms


    MEETOPTICS
    https://www.meetoptics.com › ... › Reflective Prisms
    MEETOPTICS
    https://www.meetoptics.com › ... › Reflective Prisms
    50mm, Uncoated, Rhomboid Prism. Product Code: #49-420. Wavelength Range: 350 - 2200 nm. Coating: Uncoated. Dimensions: 50 mm. Length: 50 mm.Read more
    30-day returns

    Optical BK7 Rhomboid Prisms - Precision & Customization


    Alibaba.com
    https://www.alibaba.com › ... › Prisms
    Alibaba.com
    https://www.alibaba.com › ... › Prisms
    Enhance precision in measurements with expertly crafted bk7 rhomboid prism. Ideal for professionals seeking accurate, reliable testing solutions.
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    Web results

    Rhomboid Optical Prisms


    GlobalSpec
    https://www.globalspec.com › areaspec › spec_rhomboid
    GlobalSpec
    https://www.globalspec.com › areaspec › spec_rhomboid
    Rhomboid Optical Prisms · Prism Material: BK7 Glass; UV Grade Fused Silica · Surface Flatness: λ/10.Read more
    45-day returns
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