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


Enhanced aluminum front surface mirrors

Special Properties

  • Enhanced reflectivity by dielectric protective overcoatings above the metallic aluminum coating
  • Very good optical performance
  • No ghosting effects in reflected image
  • High imaging quality
  • 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
  • Mirror for projector and camera applications
  • Laser mirror
  • Optics for medical instruments
  • Cost saving replacement for gold mirrors
  • Economically priced optical mirrors

Our SEA enhanced-aluminum-mirrors are protected by reflection-enhancing, dielectric thin-film layers, which are coated on top of the metallic layer. These very thin protective coatings considerably enhance the reflectance compared to bare or SiO2-protected aluminum mirrors and prevent the aluminum coating from oxidation.

Enhanced aluminum front surface mirror optics

The coatings are vacuum deposited on a high-grade glass substrate material. Because the optically effective mirror coatings are located directly on top of the glass substrate, our enhanced aluminum mirrors achieve an excellent image quality. A ghost image or a doubled laser beam, which are inherent to the functional principle of backside coated mirrors, is completely avoided with our front surface coated aluminum mirror optics.

Both, the SEA-VIS and the SEA-NIR enhanced aluminum coatings show much better resistance to humidity and abrasion than silver mirrors. The SEA-mirrors are economically priced optics, which have proven to be an ideal choice for projects that require a good optical reflectivity performance and a high mechanical stability at reasonable cost. Hence, many high volume applications are based on our enhanced aluminum metal-coated mirrors. The SEA-VIS coating is designed for applications in the visible spectrum. The SEA-NIR mirror coatings have been optimized for near infrared wavelengths. They can be a cost-effective alternative to gold mirrors, when used for the NIR or IR wavelength range. For ultraviolet applications and for broadband UV-VIS-IR applications, we fabricate our SEA-UV protected aluminum mirrors (separate data-sheet) which have a metallic aluminum layer and only a SiO2 layer coated on top.

The SEA-VIS and the SEA-NIR mirrors can be used as laser beam mirrors up to medium laser powers. Please contact us to check whether our standard SEA mirror coatings can be used with your laser beam without modifications.

We manufacture all of our aluminum front surface mirrors at small and large dimensions. If required, the dielectric overcoating layers can be optimized and modified to enhance the reflectance of the metallic coating for special wavelengths. In case you need such a custom coating, please use our coating enquiry-form to send a request.

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


To rapidly receive a quotation for a individually sized standard SEA-VIS or SEA-NIR enhanced aluminium mirror optics, please click the respective button below:


Request a SEA-VIS Quotation

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

Request a SEA-NIR Quotation

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

You may be wondering why there is no shopping cart on our website. The simple answer is: we don't need one. The typical delivery time for custom 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 48h express optics 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 products with fixed dimensions. So a shopping cart is no advantage if you need a part that perfectly fits.




SEA mirror coatings, reflectance curves

Reflectance of our SEA-VIS and SEA-NIR 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 thin film coatings on top of the aluminum layer)


SEA-VIS mirrors
  • Reflectance > 94 % at 550 nm at 45°
  • Average reflectance > 93 % at wavelength
    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 on request
SEA-NIR mirrors
  • Average reflectance > 93,5 % at wavelength
    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
(For a price quotation click on desired thickness )

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 if you need 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"