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

Enhanced Aluminum Mirrors

AL-coated front surface mirror optics with dielectric overcoatings

Special Properties

  • Increased reflectance due to additional dielectric optical multi-layer coating on the metallic aluminum coating
  • High optical imaging quality
  • No ghosting effects in the reflected image
  • Excellent optical performance
  • Economically priced
  • Large dimensions possible
  • Efficient reflection of IR-energy (SEA-NIR)

Typical Applications

  • Light and laser beam deflecting mirrors
  • Large format front surface mirrors
  • Optics for sensor technology
  • Laser barcode and flatbed scanners
  • Infrared mirror 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

Related mirror types

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 coating. These very thin overcoatings considerably improve the reflectance compared to bare aluminum and protected aluminum mirrors and protect the metal 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.

Picture of SEA-VIS enhanced aluminum mirrorThe aluminum coatings of the SEA-mirrors are vacuum deposited to a high-grade glass substrate material. Because the optically effective mirror coating is located directly on top of the glass substrate, our enhanced aluminum mirror achieves 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. Therefore, these coatings are the best choice for high volume applications. They have proven to be an ideal choice for projects that require good optical reflectivity and imaging performance in the visible wavelength area and high mechanical stability at a reasonable cost.

We have optimized the SEA-NIR mirror coatings for applications using near-infrared wavelengths. Hence, these optics are also a cost-effective alternative to gold-plated mirrors for the reflection of light energy in this wavelength spectrum up to the IR.

Enhanced aluminum front surface mirror opticsFor ultraviolet and broadband UV-VIS-IR applications we have developed our SEA-UV-protected aluminum mirror (separate data-sheet) which only has a thin protective SiO2 (quartz) coating on top of the metallic aluminum thin-film.

The SEA mirrors can be used as laser optics for beams with up to medium laser power. 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 protective overcoating layers can be optimized and modified to enhance the reflectance of the metallic coatings for particular optical wavelengths. In case you need optics with such individually adapted optical coatings please use our coating inquiry-form.

For more information about 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 who are pleased to help you in the development of custom designed enhanced aluminum mirror optics.

To quickly receive a quote for an individually dimensioned standard SEA-VIS or SEA-NIR enhanced aluminum mirror optic, please use the following buttons:


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. There is a good reason for this: Since every application requires different dimensions and our typical delivery time for individually dimensioned optical mirrors and many other optics is less than a week, we have refrained from limiting ourselves to standard dimensions. A shopping cart for a few standard products with few fixed dimensions which rarely represent an optimal solution for our customers therefore makes no sense for us.

Such short lead times are 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 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 just receive a price quotation for custom sized optics in the optical 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 (optimized for visible light energy)
  • SEA-NIR (optimized for infrared light energy)

Substrate Material


  • Enhanced Aluminum
    (Aluminum, enhanced and protected by dielectric multi-layer coating 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
  • 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 thicknesses
SEA-NIR (near-IR range)
stock thicknesses (mm)
2,00 ±0,20
3,00 ±0,20
SEA-NIR mirrors at customized thicknesses


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".

© 1994-2019 Präzisions Glas & Optik GmbH