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Enhanced Aluminum Mirrors

SEA-VIS and SEA-NIR Series

Special Properties

  • High and broadband optical reflection, enhanced by dielectric overcoatings
  • Optimized for an angle of incidence of 45°
  • Excellent imaging quality and precision
  • No ghosting effects
  • Outstanding price-performance ratio
  • Large dimensions are possible
  • High reflectivity for near-infrared light (SEA-NIR)
  • Wide range of incidence angles
  • High-quality substrate material

Typical Applications

  • Flat optical mirrors for light and laser systems
  • Large front surface mirrors
  • Sensor technology
  • Laser barcode readers and flatbed scanners
  • IR mirrors
  • Low-cost alternative to optical silver mirrors
  • Laser projection scanners
  • Redirecting mirrors
  • Broadband mirrors for episcopes, copiers, projectors, fax machines, projectors, and camera systems
  • Laser beam steering mirrors
  • Optics for medical instruments
  • Cost-saving replacement for gold metal mirrors
  • Front surface mirrors for large volume projects
  • High-resolution observation mirrors

Related mirror types

The SEA-VIS enhanced aluminum front surface mirror is the most popular mirror in our extensive product line. It offers excellent reflection and high optical quality at a comparatively low price. The SEA-VIS is based on a thin aluminum layer and an additional dielectric multilayer overcoating coated on top of the metallic layer. This additional ultra-thin coating Picture of SEA-VIS mirror opticssignificantly increases the reflection compared to so-called protected aluminum mirrors and protects the aluminum layer from oxidation, scratching, and other environmental influences. SEA-VIS and SEA-NIR coatings both have much better resistance to moisture and abrasion than sensitive silver front surface mirrors. The mirrors achieve high imaging accuracy because the coatings are deposited directly on the front surface of a flat mirror-grade substrate. Hence, a light beam does not have to travel through glass twice to be reflected, as is the case with backside-coated mirrors. Ghost images or the formation of phantom laser beams in the reflected image, which occur with backside-coated mirrors, are thus completely prevented. SEA-VIS enhanced aluminum mirrors are economically priced optics. They are ideal for projects that require high optical reflectivity in the visible, Enhanced aluminum front surface mirror with a 50 mm diameter reflecting a light beam with excellent imaging precision, and good mechanical stability at a reasonable cost. So, the SEA-VIS is often the best choice for high-volume applications.

The SEA-NIR mirror has the same design as the SEA-VIS, except that the dielectric layers are optimized for the near-infrared wavelength range. It can also be used as an alternative to gold mirrors in the IR range. All SEA mirror optics can also work as laser mirrors for medium-power laser systems. Please get in touch with our engineers to find out whether you can use our unmodified SEA-enhanced aluminum mirror with your laser application. We also fabricate these mirrors in large dimensions. Moreover, we can optimize and modify the overcoating layers to increase reflectance at a particular optical wavelength. Please consider using our inquiry form to request a quotation for customized mirrors. For more information about our enhanced aluminum SEA-VIS and SEA-NIR front surface mirrors, please visit our FAQ web page.

Please click one of the following buttons or the desired thickness in the thickness table to comfortably enter a request for individually sized SEA-VIS or SEA-NIR enhanced aluminum mirrors.


Get a SEA-VIS quotation

48h-Express Optics 48-hour express delivery

Get a SEA-NIR quotation

48h-Express Optics 48-hour express delivery


SEA-VIS and SEA-NIR optical reflection SEA mirrors, reflectance curves
Enlarge the curve to view details.

Stock Thicknesses

Please click on a thickness to begin the RFQ process:

Thickness (mm)


48-hour Express Optics

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 near-IR wavelengths

2,00 ±0,20
3,00 ±0,20
SEA-NIR with custom thickness
The thicknesses marked with "" are also available within our 48-hour express manufacturing.

Reflectance specifications

SEA-VIS mirrors
  • R > 94 % at 550 nm, AOI = 45°
  • Ravg > 93 % at 450–650 nm, AOI = 15–45°
  • Ravg > 92 % at 550 nm for S&P-polarization,
    AOI = 15-45°
  • Other reflectivity, angle of incidence, wavelength range, or optimized layers for laser applications are available on demand.
SEA-NIR mirrors
  • Ravg > 93,5 % at 700–1200 nm, AOI = 45°
  • Other reflectivity or angles are available on demand.

Substrate Material

Coating Construction

  • Metallic aluminum coating enhanced and protected by a dielectric multilayer coating on top of a metal layer

Surface Flatness

  • Depending on material
  • Special flatness is possible on demand

Cosmetic Surface Quality

  • 80-50 scratch & dig or better (MIL-0-13830A)
  • Other surface qualities are possible on demand

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 × 1270 mm

Possible Mirror Shapes

  • Square or rectangular
  • Round parts up to a diameter of approx. 600 mm
    (the max. possible diameter depends on the thickness)
  • Free forms
    (The production possibility depends on the thickness and quantity)

Product Codes

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

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


Where is the shopping cart?

Fixed standard dimensions are rarely an optimal solution for the customer. Our typical delivery time frame for the fabrication of individually sized optical mirrors is less than a week. You can order exactly the dimensions you really require for your individual application. 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 individual dimensions. We even offer our 48-hour express delivery for the delivery of custom-sized optics with stock thicknesses within only two working days! This period is shorter than it usually takes to receive a price quotation in the optical industry. It is quicker than many retail companies can ship their off-the-shelf catalog optics. So, a shopping cart is no advantage if you quickly need optics that fit your needs perfectly.


We provide solutions for many optical tasks. Please visit our product overview if you are searching for other mirrors, filters, windows, substrates, beamsplitters, or other optical components for light and laser applications. If you are looking for UV front surface mirrors capable of reflecting ultraviolet light, please visit our SEA-UV datasheet.


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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Last update: 09.01.2024