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Home / Product / Front Surface Mirrors / SEA-VIS & SEA-NIR Enhanced Aluminium Mirrors

Enhanced Aluminum Mirrors

AL-front surface mirrors with dielectric overcoatings

Special Properties

  • Enhanced reflectance by dielectric overcoatings on top of the metallic aluminum coating
  • High optical imaging quality
  • No ghosting effects in the reflected image
  • Excellent optical performance
  • Economically priced
  • Large sizes possible

Typical Applications

  • Light- and laser beam deflection mirrors
  • Large format front surface mirrors
  • Optics for sensor technology
  • Laser barcode and flatbed scanners
  • Infrared optics
  • Economical replacement for silver coatings
  • Laser projection scanners
  • Redirecting mirrors
  • Mirror for episcopes, copiers, projectors, fax machines, projectors, and cameras
  • Laser beam steering mirror
  • Optics for medical instruments
  • Cost saving replacement for gold metal mirrors
  • Economically priced optical mirrors

The enhanced aluminum mirrors of our SEA-VIS and SEA-NIR series are protected by reflection-increasing dielectric thin-film layers coated on top of a highly reflective metallic aluminum layer. These very thin overcoatings considerably increase the reflectance compared to bare or protected aluminum mirrors and protect the aluminum coating of the optics from oxidation and scratching. Both, the SEA-VIS and the SEA-NIR coatings show much better resistance to humidity and abrasion than silver mirrors.

Enhanced aluminum front surface mirror optics

The aluminum coatings of the SEA-mirrors are vacuum deposited to a high-grade glass substrate material. Because the optically effective mirror surface is located directly on top of the glass substrate, our enhanced aluminum mirrors achieve an excellent optical imaging quality. Ghost images or phantom laser beams which both are inherent to the functional principle of backside coated mirrors are completely avoided with our enhanced-aluminum front surface mirror optics.

The SEA-VIS mirrors are economically priced optics. Hence, many high volume applications base on the SEA-VIS coatings. They have proven to be an ideal choice for projects that require good optical reflectivity performance in the visible wavelength range and relatively high mechanical stability at a reasonable cost.

We have optimized the SEA-NIR mirror coatings for applications using near-infrared wavelengths. These optics also represent a cost-effective alternative to gold or metal coated mirrors in the NIR and IR spectrum.

For ultraviolet and broadband UV-VIS-IR applications we have developed our SEA-UV-protected aluminum mirrors (separate data-sheet) which only have a protective SiO2 (quartz) coating on top of the metallic aluminum layer.

The SEA mirrors can be used as laser optics for beams with up to medium laser powers. Please contact us to learn whether you can use our standard SEA aluminum mirror coatings with your laser beam without modifications.

We can manufacture all of our aluminum front surface mirrors at large dimensions. If required the dielectric overcoating layers can be optimized and modified to enhance the reflectance of the metallic optical coating for particular wavelengths. In case you need optics with such an individually adapted optical coating please use our coating inquiry-form.

For more information on our enhanced aluminum SEA-VIS and SEA-NIR front surface mirrors, please visit our "Frequently Asked Questions" (FAQ) web page. For additional support, please contact our engineers. They are pleased to help you in the development of custom designed enhanced aluminum mirror optics.

To rapidly receive a quotation for an individually sized standard SEA-VIS or SEA-NIR enhanced aluminum mirror optics please use the buttons below:


SEA-VIS Quotation request

48h-Express Service Also available in 48 h Express-Service

SEA-NIR quotation request

48h-Express Service Also available in 48 h Express-Service


Where is the shopping cart?

You may be wondering why there is no shopping cart on our website. The typical delivery time for individually sized optical mirrors and many other optics is less than a week. This short lead time is also possible for larger quantities as our company has specialized in the fast production of mirrors and optics with custom dimensions. Furthermore, we offer our new 48 h express service for the manufacturing and delivery of custom-sized optics within only two working days. This period is shorter than it usually takes to receive a price quotation in the optics industry and this is quicker than many retail companies can ship their catalog optics with fixed dimensions. So the shopping cart is no advantage if you quickly need optics that perfectly fit your needs.




SEA mirror coatings, reflectance curves

View Reflectance of the SEA-VIS & SEA-NIR
enhanced aluminum mirrors


Product Codes

  • SEA-VIS (layer-optimized for visible light reflectance)
  • SEA-NIR (layer-optimized for infrared light reflectance)

Substrate Material


  • Enhanced Aluminum
    (Aluminum, enhanced and protected by dielectric coatings on top of the aluminum metal layer)


SEA-VIS mirrors
  • Reflectance > 94% at 550 nm at 45°
  • Average reflectance > 93% at wavelength range
    450-650 nm at 15°-45°
  • Average reflectance > 92% at wavelength
    550 nm for S&P-polarization at 15°-45°
  • Other reflectance, incident angles, wavelengths, or optimized coatings for laser applications per inquiry
SEA-NIR mirrors
  • Average reflectance > 93,5% at a wavelength range of 700-1200 nm at 45°
  • Other reflectance or angles available on request


  • Depending on substrate material and thickness
  • Special flatness per inquiry

Cosmetic Surface Quality

  • typ. 80-50 scratch & dig (MIL-0-13830A)
  • Other on inquiry


Available Standard Thicknesses

SEA-VIS (visible range)
stock thicknesses (mm)
0,55 ±0,05
1,00 ±0,10
1,10 ±0,10
2,00 ±0,20
3,00 ±0,20
4,00 ±0,20
5,00 ±0,20
6,00 ±0,20
SEA-VIS mirrors at a customized thickness
SEA-NIR (near infrared range)
stock thicknesses (mm)
2,00 ±0,20
3,00 ±0,20
SEA-NIR mirrors at a customized thickness


Adherence & Abrasion

  • Adherence according to MIL-C-675 C (tape test)
  • Abrasion-resistant according to MIL-M-13508 C


  • up to approximately 810 mm x 1270 mm

If you need engineering support or help in the development of your mirror optics, please do not hesitate to contact us.


All given details and properties are mean reference values and are not guaranteed. Also, please consider our "Notes on technical specifications".

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