First Surface Mirrors with Thickness 1.0 and Size (mm) 17.0 x 23.0, 254.0 x 304.8, 6.35 Diameter or 19.0 x 19.0

Front Surface Mirror

Protected and enhanced aluminum curve
Protected and Enhanced Aluminum Curve 250 – 10,000nm

A front or first surface mirror provides superior optical quality for engineering and scientific applications. Unlike a standard household mirror, which is coated on the second surface of the glass, a first surface mirror provide an accurate reflection without ghost images. Optical experts recommend first surface mirrors for use in precision optics applications.

Metal coatings are typically very fragile without a protective overcoat. A dielectric coating on a metallic mirror increases the durability of the metal coating as well as provides a barrier to help prevent oxidation.  The overcoat has little impact on the performance of the metal coating.

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Protected Aluminum Mirror

Standard Protected Aluminum is our most popular mirror coating for applications in the visible and near-infrared. A layer of Silicon Dioxide (SiO2) is typically used as an overcoat to protect the aluminum layer. This addition to the coating provides an abrasion-resistant surface while maintaining the performance of aluminum mirror. Another option for the overcoat is Magnesium Fluoride (MgF2).

Enhanced Aluminum Mirror

In our Enhanced Aluminum coating, a multi-layer film of dielectrics on top of aluminum is used to increase the reflectance in the visible regions. This coating is ideal for applications requiring increased reflectance from 400 – 650nm. The multi-layer film also provides the same durability characteristics as the protected aluminum coating.

Product SKUs

  • Protected Aluminum Mirror, 17 x 23mm, 4-6λ

    PRAL-17x23
    $10.25
    5 in stock
    Add to cart

    Optical Coating

    Protected Aluminum

    Substrate

    Soda Lime Float Glass

    Size (mm)

    17.0 x 23.0

    Size Tolerance

    ±0.76

    Thickness

    1.0

    Angle of Incidence

    45°

    Clear Aperture

    90%

    Surface Flatness

    4 – 6λ

    Coating Specification

    Ravg >85% @ 400 – 700nm

    Wavelength Range

    400-700nm

    Edges

    Cut, 0.5mm Maximum Edge Chip

    Surface Quality

    80-50

    Typical Energy Density Limit

    0.3 J/cm2 @ 532nm & 1064nm, 10ns

  • Protected Aluminum Mirror, 19 x 19mm, 4-6λ

    PRAL-19x19
    $10.25
    20 in stock
    Add to cart

    Optical Coating

    Protected Aluminum

    Substrate

    Soda Lime Float Glass

    Size (mm)

    19.0 x 19.0

    Size Tolerance

    ±0.76

    Thickness

    1.0

    Angle of Incidence

    45°

    Clear Aperture

    90%

    Surface Flatness

    4 – 6λ

    Coating Specification

    Ravg >85% @ 400 – 700nm

    Wavelength Range

    400-700nm

    Edges

    Cut, 0.5mm Maximum Edge Chip

    Surface Quality

    80-50

    Typical Energy Density Limit

    0.3 J/cm2 @ 532nm & 1064nm, 10ns

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