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Anti-reflection Coatings

High-quality AR-coated glass

ARC Series

Special Properties

  • Highly efficient reduction of surface reflection
  • High optical transmission for visible wavelengths
  • Excellent suppression of ghost images, phantom light, or double laser beams
  • The refractive index of the coatings adapts the glass-to-air transition
  • All-dielectric metal-free multi-layer coating construction
  • Metal-free coating layers
  • Low light absorption
  • High abrasion resistance
  • Excellent coating adhesion
  • Low rest-reflection
  • Always available down to 0,7 mm thickness

Typical Applications

  • Anti-reflection coating on optical windows, lenses, and beam splitters
  • Sensor covers
  • Coatings for windows in medical devices
  • Laser windows
  • BBAR-coating for optical measuring instruments
  • Automotive cockpits
  • Camera protection window
  • Robotics applications
  • AR-coating for single lenses and lens assemblies

Related coatings

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Our ARC coatings offer excellent anti-reflection performance and high optical light transmission for the visible wavelength range. The vacuum-deposited dielectric multi-layer coatings adapt the refractive index of the substrate to the ambient air. As a result, the coating layers reduce the reflection from glass surfaces to a minimum.

Typically in the visible wavelength spectrum, about 4,25% of light is reflected from each uncoated glass surface. So, around 8,5% of the light is lost per uncoated element in an optical system through reflection caused by a refractive index mismatch. Our ARC coating reduces such reflections in parts of this spectral range to less than 0,2% per surface, which is considerably better than simple single-layer anti-reflective coatings that often reflect 1-2% of light.

The so-called ghost imaging is another unwanted effect in optical systems caused by the 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. Hence, the transmitted image remains sharper and brighter and offers much better contrast. Imaging accuracy is maintained, and nearly no light gets lost by reflection. Our ARC coating materials can also reduce a secondary laser beam when used as a laser window. The usable light power increases because the entire laser beam's energy is transmitted.

We apply the coating layers of our double-side coated ARC and single-side AR-coated ARC-1S standard AR-coatings on selected iron-reduced float glass materials using a vacuum deposition process. For the ARC-B coating, we use premium-grade borosilicate glasses. We ensure the best light transmission by adapting the refractive index of each anti-reflection coating to the respective substrate material.

All ARC coatings are usually always available, as we produce them regularly. Our coating capabilities are not limited to the anti-reflection coatings described on this website. On request, we also coat other substrate materials or finished optics. We also apply our anti-reflective coating layers to optical lenses and other optics the customer provides on a per-batch basis. On request, a customized AR-coating for a different wavelength range is also available.

 

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 usually can ship. Hence, you can order precisely the sizes you need at any time! Our strength is the rapid custom manufacturing of optics that perfectly fit your applications without any 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 Also available in 48 h Express-Service

 

Specifications & Properties


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

Reflection curve of an uncoated glass 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 AR-coatings,
substrate material Selected Float glass

0,70 ±0,50
1,10 ±0,10
2,00 ±0,20
3,00 ±0,20
Custom thickness on request

ARC-1S:
single-side AR-coatings,
substrate material Selected Float glass

2,00 ±0,20
Custom thickness on request

ARC-B:
double-side AR-coatings,
substrate material BOROFLOAT®

1,10 ±0,10 -
2,00 ±0,20 
3,30 ±0,20
Custom thickness and other glass materials 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 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 glass 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

 

If you want us to custom coat our anti-reflection coating on supplied lenses, please let us know the exact specifications. Specifying the lens material's refraction index, the precise lens dimensions, and focal length is essential. The provided lenses must not already have any coating layers on their surfaces. Please inform us about the lens glass materials, maximum allowed residual reflection of the lens surface, the relevant wavelength range, and the light source you plan to use. 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. Also, please consider our "Notes on specifications".

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