ALKOR Technologies - your CRYSTAL optics supplier.   ALKOR Technologies - your CRYSTAL optics supplier.
ALKOR Technologies - your CRYSTAL optics supplier.
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Protected Aluminum mirrors

Alkor Technologies provides a large variety of custom optical mirrors. Our protected aluminum mirror coating consists of an aluminum layer and a very thin protective SiO2á overcoating.

Compared to soft and sensitive unprotected bare aluminum coatings, our protected aluminum coatings are harder, more durable and more resistant.

Protected aluminum mirrors are used as ultraviolet mirrors or broadband mirrors, featuring high reflection from the ultraviolet to the infrared light range. By adding dielectric overcoatings the reflection of our protected aluminum first surface mirrors can be modified and increased at special wavelengths or reflection ranges.

Contact our Sales team for pricing!

Square and Rectangular Optical Mirror (Aluminum Coating)

  • S1: Flatness 1-3 waves per Dia25.4mm
  • 80/50 scratch/dig
  • S2: Commercial finish
  • Dimensions: +0.0/-0.1mm
  • Thickness: +/-0.1mm
  • Material: Optical grade glass, Fused Silica or Silicon
Length Width Thickness
25.4mm 25.4mm 3mm
25.4mm 38.1mm 3mm
25.4mm 50.8mm 5mm
25.4mm 76.2mm 7mm
25.4mm 101.6mm 8mm
50.8mm 50.8mm 5mm
50.8mm 76.2mm 7mm
50.8mm 101.6mm 8mm
76.2mm 76.2mm 7mm
76.2mm 101.6mm 8mm
101.6mm 101.6mm 8mm

Round Optical Mirror Specifications (Aluminum coating)

  • S1: Flatness 1-3 waves per Dia25.4mm
  • 80/50 scratch/dig
  • S2: Commercial finish
  • Diameter: +/-1.0mm
  • Thickness: +0.5mm/-1.5mm
  • Material: Optical grade glass, Fused Silica, Silicon
Diameter Thickness
25.4mm 3mm
38.1mm 4mm
50.8mm 5mm
76.2mm 8mm
101.6mm 8mm
127.0mm 10mm
152.4mm 10mm

Just ask our Sales Teamáfor your customized protected aluminum mirror.

Protected Aluminium mirror - Refelction curve

Standard protected aluminum is our most popular optical mirror coating for application in the visible and near infrared. SiO is typically used as an overcoat to protect delicate aluminum mirror. This treatment provides an abrasion-resitant surface while maintaining the perfomance of aluminum mirror.

Protected Aluminum: Ravg > 90% from 450 nm - 2 Ám,
Ravg > 95% from 2 - 20 Ám.

See also: Protected Aluminum mirrors,Dielectric mirrors, Optical mirrors