Cold Mirrors

Our standard line of high transmission Cold Mirrors is an excellent choice for preventing undesirable ultraviolet and visible light from damaging or altering the spectral characteristics beyond that position in a light path by reflecting visible light while allowing infrared light to transmit. Two designs we offer are for use at either 0° or 45° angle of incidence. These specialized dielectric mirrors are produced on Borosilicate/Float glass. Cold Mirrors may also satisfy your requirements of a dichroic beamsplitter. If other substrate materials are of interest to you, for very high-temperature applications for instance, please contact us. Custom sizes are easy to process as well.

  • Reflect the visible light
  • Transmit the infrared light
  • Optimized to remove undesirable UV and visible illumination
  • Available for 0° or 45° angle of incidence
  • High Reflected to Transmitted light performance

Product SKUs

  • Cold Mirror, UV, 45

    Cold Mirror Specifications | CMU-45-25D

    Transmission Region

    600-1200 nm

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Size (mm)

    25 mm Dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, UV, 45

    Cold Mirror Specifications | CMU-45-25S

    Transmission Region

    600-1200 nm

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Size (mm)

    25 mm Sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, UV, 45

    CMU-45-50D
    $56.00
    Available on backorder
    Add to cart

    Cold Mirror Specifications | CMU-45-50D

    Transmission Region

    600-1200 nm

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Size (mm)

    50 mm Dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, UV, 45

    Cold Mirror Specifications | CMU-45-50S

    Transmission Region

    600-1200 nm

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Size (mm)

    50 mm Sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45

    Cold Mirror Specifications | CMV-45-25D

    Transmission Region

    750-1200 nm

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Size (mm)

    25 mm Dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45

    Cold Mirror Specifications | CMV-45-25S

    Transmission Region

    750-1200 nm

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Size (mm)

    25 mm Sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45

    CMV-45-50D
    $56.00
    Available on backorder
    Add to cart

    Cold Mirror Specifications | CMV-45-50D

    Transmission Region

    750-1200 nm

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Size (mm)

    50 mm Dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45

    Cold Mirror Specifications | CMV-45-50S

    Transmission Region

    750-1200 nm

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Size (mm)

    50 mm Sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Angle of Incidence

    45⁰

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

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