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

Enhanced Aluminum Mirrors

AL-coated front surface mirrors with dielectric overcoatings
SEA-VIS and SEA-NIR Series

Special Properties

  • Increased reflectance by additional dielectric layers on top of 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)
  • Best choice for large volume projects

Typical Applications

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

Related mirror types

The SEA-VIS enhanced aluminum front surface mirror is the best selling optical mirror from our extensive product range. It offers excellent reflection and high optical quality at a comparatively low cost.

Picture of SEA-VIS enhanced aluminum mirror opticsThe enhanced aluminum mirrors of the SEA-VIS and SEA-NIR series are protected by reflection-increasing dielectric thin-film layers coated on top of a highly reflective metallic aluminum coating. These thin dielectric coatings considerably improve the reflectance compared to bare aluminum and protected aluminum mirrors and protect the metal coating of the optics from oxidation and scratching. The SEA-VIS and the SEA-NIR coatings show much better resistance to humidity and abrasion than protected silver mirrors.

The aluminum coatings of the SEA-mirrors are vacuum deposited to a high-grade glass substrate material. Because the optically active mirror coatings are located directly on top of the glass substrate, our enhanced aluminum mirror achieves an excellent optical imaging quality. Ghost images or a phantom laser beam, which both are inherent to the functional principle of backside coated mirrors, are entirely avoided.

The SEA-VIS mirrors are economically priced optics. Therefore, these coatings are often the best choice for high volume applications. They have proven to be ideal for projects that require excellent optical reflectivity, imaging performance in the visible wavelength region, and high mechanical stability at a reasonable cost.

We optimized the SEA-NIR mirror coatings for applications in the near-infrared wavelength region. Hence, these optics are also a cost-effective alternative to gold-plated mirrors used in this spectral range.

Enhanced aluminum front surface mirror opticsFor ultraviolet and broadband UV-VIS-IR wavelength applications, we have developed our SEA-UV-protected aluminum mirror (separate data-sheet), which has one 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 enhanced aluminum mirror coatings with your laser application without modifications.

We can fabricate all of our enhanced 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 mirrors with 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 with the development of custom-designed enhanced aluminum mirror optics.

To quickly receive a quote for individually dimensioned SEA-VIS or SEA-NIR enhanced aluminum mirrors, please use the following buttons or select the desired thickness from the thickness table.


SEA-VIS Quotation request

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

SEA-NIR Quotation request

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


SEA-VIS & SEA-NIR reflection curves
SEA mirror coatings, reflectance curves
Enlarge curve to show details

Standard Thicknesses

(Please click on a glass thickness to request a quote)

Thickness (mm)


48h-Express Service

Optimized for visible wavelengths

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 with custom thickness

Optimized for infrared wavelengths

2,00 ±0,20
3,00 ±0,20
SEA-NIR with custom thickness
The thicknesses marked with "" are also available within 48–h Express Service.

Reflectance specifications

SEA-VIS mirrors:
  • Reflectance > 94% at 550 nm at 45°
  • Average reflectance > 93% at wavelength range
    450-650 nm at 15° - 45° angle
  • Average reflectance > 92% at wavelength
    550 nm for S&P-polarization at 15° - 45° angle
  • 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

Substrate Material

Coating Construction

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


  • Depending on substrate
  • Special flatness per inquiry

Cosmetic Surface Quality

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

Adherence & Abrasion

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

Maximum Dimensions

  • up to approximately 1024 mm x 1270 mm

Product Codes

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

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


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 sized 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 items with few limited fixed dimensions, which rarely represent an optimal solution for our customers, therefore, does not make sense.

Short lead times are also possible for more substantial quantities as our company has specialized in the fast production of mirrors and other optics with custom dimensions. Furthermore, we even 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 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.

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

© 1994 - 2020 Präzisions Glas & Optik GmbH