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Enhanced aluminum front surface mirrors

Special Properties

  • Enhanced reflectance by dielectric overcoatings above the metallic aluminum coating
  • High imaging quality
  • No ghosting effects in reflected image
  • Very good optical performance
  • Economically priced
  • Large sizes possible

Typical Applications

  • 45°-light and laser beam deflection mirror
  • Large format front surface mirror
  • Optics for sensor technology
  • Laser bar code scanner reflectors
  • Flatbed scanners
  • Infrared optics
  • Economical replacement for silver coatings
  • Laser projection scanners
  • Redirecting mirror
  • 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-enhancing, dielectric thin-film layers, which are coated on top of a metallic aluminum layer. These very thin overcoatings considerably increase the reflectance compared to bare or SiO2-protected aluminum mirrors and protect the aluminum coating from oxidation and scratching.

Enhanced aluminum front surface mirror optics

The coatings of the SEA-mirrors are vacuum deposited on 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 imaging quality. A ghost image or a doubled laser beam, which both are inherent to the functional principle of backside coated mirrors, are completely avoided with our enhanced aluminum front surface mirror optics.

Both, the SEA-VIS and the SEA-NIR coatings show much better resistance to humidity and abrasion than silver mirrors. The SEA-VIS mirrors are economically priced optics, which have proven to be an ideal choice for projects that require a good optical reflectivity performance in the visible wavelength range and a high mechanical stability at reasonable cost. Hence, many high volume applications are based on the SEA-VIS coatings. The SEA-NIR mirror coatings have been optimized for applications using near infrared wavelengths. They also are a cost-effective alternative to gold metal mirrors in the NIR and IR spectrum. For ultraviolet and for broadband UV-VIS-IR applications, we designed our SEA-UV protected aluminum mirrors (separate data-sheet) which have a metallic aluminum layer and only a very thin protective SiO2 layer coated on top. The SEA-VIS and the SEA-NIR mirrors can be used as laser mirrors up to medium laser beam powers. Please contact us to check whether our standard SEA mirror coatings can be used with your laser 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 aluminum coating for special wavelengths. In case you need such a customized coating, please use our coating enquiry-form.

If you have further questions, additional information referring the SEA-VIS and SEA-NIR enhanced aluminum front surface mirrors is available on our "Frequently Asked Questions" (FAQ) web page. For technical support, please contact our engineers. We will be pleased to help you in development of individually designed enhanced aluminum mirror optics.

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


Request a SEA-VIS Quotation

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

Request a SEA-NIR Quotation

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

You may be wondering why there is no shopping cart on our website. The typical delivery time for individually sized mirrors and many other optics is less than a week. This is also possible for larger quantities, as our company has specialised in the fast production of mirrors and optics with custom dimensions. Furthermore, we offer our new 48 h express service for a manufacturing and delivery of cutom-sized optics within only 2 working days. This is shorter than it ususally takes to simply receive a price quotation in the optics industry. And this is quicker than many retail companies can ship their catalog items with fixed dimensions. So a shopping cart is no advantage if you want a part that perfectly fits.




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 reflectances, incident angles, wavelengths, or laser optimized coatings per inquiry
SEA-NIR mirrors
  • Average reflectance > 93,5% at wavelength range
    700-1200 nm at 45°
  • Other reflectances or angles 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


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 customized thickness
SEA-NIR (near infrared range)
stock thicknesses (mm)
2,00 ±0,20
3,00 ±0,20
SEA-NIR mirrors at 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. In addition, please consider our "Notes on technical specifications"