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Anti-Reflection Coatings

High-quality AR-coated glass

ARC Series

Special Properties

  • Efficient reduction of glass surface reflections
  • High and broadband visible transmission
  • Low rest-reflection
  • Excellent suppression of ghost images, phantom light, or double laser beams
  • Adjusts the refractive index to the glass-air transition
  • Metal-free dielectric multilayer coating
  • Low light absorption in the coating
  • High abrasion resistance
  • Superior coating adhesion
  • Available down to a substrate thickness of 0,7 mm

Typical Applications

  • Broadband anti-reflection coating on optical windows, lenses, and beam splitters
  • AR-coating for sensor covers
  • Anti-reflection coated windows in medical devices
  • Non-reflective coatings for laser windows
  • BBAR-coating for optical measuring instruments
  • Non-reflective automotive and aircraft cockpits
  • Low-loss camera protection windows
  • Robotics applications
  • Anti-reflection coatings for lenses and lens assemblies
  • High-end solar applications

Related coatings

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48h-Express Service Available in 48 h Express-Service


Our vacuum-deposited dielectric multilayer ARC coatings match the refractive index of the glass to the ambient air, minimizing reflections from the surfaces. The coatings offer excellent broadband anti-reflection performance and high optical light transmission in the visible wavelength range.

Each uncoated glass surface reflects about 4,25 % of the incident light. So, about 8,5 % of transmission is lost through any uncoated element of an optical system. This natural reflection loss results from the difference in refractive index between the glass and the surrounding air. Our multilayer ARC coating reduces such reflections in some parts of the visible spectrum to less than 0,2 % per surface, which is a considerable improvement compared to simple single-layer anti-reflection or anti-glare coatings that often still reflect about 1–2 % of light.

The so-called ghost imaging is another unwanted effect in optical systems caused by natural surface reflection. A transmitted image is superimposed with a reflected weak identical ghost image, resulting in degraded sharpness and blurry imaging. The ARC broadband anti-reflection coating suppresses such unwanted secondary reflection effectively. The transmitted image remains sharper and brighter and offers significantly better contrast. Imaging accuracy is maintained, and nearly no light gets lost by reflection.
In the same way, our ARC-coated materials can also reduce secondary laser beams when used as a laser window. The usable laser energy increases because almost the entire laser beam is transmitted instead of partially reflected.

We apply the AR-coating layers of our double-side ARC and single-side ARC-1S standard coatings on selected iron-reduced float glass materials that meet display quality. For the ARC-B coating, we use premium-grade borosilicate glasses. For best performance, we adjust the refractive index of each anti-reflection coating to the respective substrate material used.

Our coating capabilities are not limited to the anti-reflection coated glasses described on this website. We can apply our anti-reflective coating layers to optical lenses and other optics the customer provides. Furthermore, a custom coating design is possible. AR coatings for different wavelength ranges are also feasible on request.

 

How do I receive an offer? Do you have fixed standard dimensions?

Our company specializes in rapidly producing and delivering optics of individual sizes. We can quote, fabricate, and provide custom-sized optics as fast as off-the-shelf parts with fixed dimensions can typically ship. Hence, you can order precisely the sizes you need at any time! Our strength is the fast, customized production of anti-reflection coated optics that fit perfectly into your applications without modification.

Please select a material and a thickness from the table, or use the following button to request a quotation for any ARC anti-reflection coating with customized dimensions.

 

Request for Quotation

48h-Express Service Available in 48 h Express-Service

 

Specifications & Properties


ARC anti-reflection coating compared
to the reflection of uncoated glasses

Reflection curve of an uncoated compared to a ARC-coated window
Enlarge curve to show details


Standard thicknesses

(Please click on a thickness to request a quote)

Thickness (mm)

Tolerance

48h-Express Service

ARC:
double-side multi-layer coated AR-coatings,
coated on Selected Float glass material

0,70 ±0,50
1,10 ±0,10
2,00 ±0,20
3,00 ±0,20
Other thicknesses on request

ARC-1S:
single-side multi-layer coated AR-coatings,
coated on Selected Float glass material

2,00 ±0,20
Other thicknesses on request

ARC-B:
double-side multi-layer coated AR-coatings,
coated on BOROFLOAT® material

1,10 ±0,10 -
2,00 ±0,20 
3,30 ±0,20
Other thicknesses and materials are possible on request.
The thicknesses marked with "" are also available within 48–h Express Service.

Spectral Characteristics

  • Absolute rest-reflection:
    Rabs </= 0,6 % per surface at a wavelength range of 450 – 650 nm (i = 0°) for unpolarized light
  • Average rest-reflection:
    Ravg < 0,3 % per surface at a wavelength range
    of 430 – 660 nm (i = 0–15°) for unpolarized light
  • AR-coating for other or single wavelengths per inquiry
  • Characteristics for laser use per inquiry
  • Modified coating layers per inquiry

Coating Construction

  • Index-matched multi-layer BBAR-coating for the visible wavelength spectrum

Flatness

  • Depending on the substrate material and thickness

Surface Quality

  • better than 80-50 scratch & dig (MIL-0-13830A)
    (typically better than 60-40)
  • Higher surface quality on request

Other Specifications

  • Coating layer adhesion according to MIL-C-675 C
  • Abrasion resistance according to MIL-M-13508 C

Please let us know the exact specifications if you want us to coat our anti-reflection coating on supplied lenses. Specifying the lens material's refraction index, precise lens dimensions, and focal length is essential. The provided lenses must be free of any other coating layers. Please inform us about the lens materials, the maximum allowed lens surface reflection, the relevant wavelength range, and the light source you plan to use with the lens. Please consider that such custom coatings are only possible in production quantities.

 

All given details and specifications are mean reference values and are not guaranteed. Please consider our "Notes on specifications".

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Last update 29.11.2022