Cold Mirrors

Our standard line of high transmission Cold Mirrors are a great 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 are offered 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 beam splitter. 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, 45⁰, 25 mm Dia.

    CMU-45-25D
    $39.00
    Call for Delivery

    Transmission Region

    600-1200 nm

    Transmission (min)

    85%

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    25 mm dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, UV, 45⁰, 25 mm Sq.

    CMU-45-25S
    $39.00
    Call for Delivery

    Transmission Region

    600-1200 nm

    Transmission (min)

    85%

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    25 mm Sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, UV, 45⁰, 50 mm Dia.

    CMU-45-50D
    $56.00
    Call for Delivery

    Transmission Region

    600-1200 nm

    Transmission (min)

    85%

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    50 mm dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, UV, 45⁰, 50 mm Sq.

    CMU-45-50S
    $56.00
    Call for Delivery

    Transmission Region

    600-1200 nm

    Transmission (min)

    85%

    Reflection Region

    325-475 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    50 mm sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45⁰, 25 mm Dia.

    CMV-45-25D
    $35.00
    Call for Delivery

    Transmission Region

    750-1200 nm

    Transmission (min)

    85%

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    25 mm dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45⁰, 25 mm Sq.

    CMV-45-25S
    $35.00
    Call for Delivery

    Transmission Region

    750-1200 nm

    Transmission (min)

    85%

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    25 mm Sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45⁰, 50 mm Dia.

    CMV-45-50D
    $56.00
    Call for Delivery

    Transmission Region

    750-1200 nm

    Transmission (min)

    85%

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    50 mm dia.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

  • Cold Mirror, VIS, 45⁰, 50 mm Sq.

    CMV-45-50S
    $56.00
    Call for Delivery

    Transmission Region

    750-1200 nm

    Transmission (min)

    85%

    Reflection Region

    420-630 nm

    Reflection (min)

    90%

    Design Angle

    45⁰

    Size

    50 mm sq.

    Size Tolerance

    ± 0.1 mm

    Thickness

    1.0 mm

    Thickness Tolerance

    +0.25/-0.00 mm

    Scratch/Dig

    60-40

    Clear Aperture

    90%

    Parallelism

    ≤ 3 arc min.

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