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Anti-Reflection Coatings

High-quality AR-coated glass

ARC Series

Special Properties

  • Highly efficient reduction of surface reflections
  • High transmission for visible wavelengths
  • Excellent suppression of ghost images, phantom light, or double laser beams
  • Refractive index adapted to the glass-air transition
  • All-dielectric multi-layer coating
  • Metal-free coating layers
  • Low light absorption
  • High abrasion resistance
  • Excellent coating adhesion

Typical Applications

  • Anti-reflection coating for optical windows, lenses, and beamsplitters
  • Sensor cover glasses
  • Closure windows in medical devices
  • Laser windows
  • BBAR-coating for optical measuring instruments
  • Automotive cockpit glass surfaces
  • Camera protection window
  • Robotics applications
  • AR-coatings for single lenses and lens assemblies

Related topics

Request for Quotation

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


Our ARC coating series offers excellent anti-reflection properties and high light transmission in the visible wavelength range. The optical coatings consist of multiple vacuum-deposited dielectric thin-film layers that adapt the substrate's refractive index to the ambient air's refractive index. The ARC coating layer design reduces surface reflections to a minimum.

Approximately 4,25% of light in the visible wavelength spectrum is reflected from an uncoated glass surface. Hence, around 8,5% of light gets lost per uncoated element in an optical system through reflection. Our index-matched ARC coating layer can reduce these reflections in parts of this spectral range to less than 0,2% per surface. Compared to simple single-layer anti-reflective coatings, which typically still reflect about 1-2% of incident light per side, this is a decisive improvement.

Such surface reflections often superimpose a transmitted image with a weak identical ghost image resulting in degraded image sharpness. Our BBAR anti-reflective coatings suppress those unwanted secondary reflections effectively. With our optical AR-coating layers' help, the image remains sharp, brighter, and has much better contrast. The image quality is maintained, and almost no light gets reflected. When used as a laser window, our ARC materials can eliminate double laser beams. The available laser power increases because it is almost entirely available in transmission.

The layers of our double-sid e coated ARC and single-side coated ARC-1S standard coatings are applied to selected high-quality iron-reduced float glasses by a vacuum deposition process. For the ARC-B series, we use premium quality BOROFLOAT® material. We adapt the refractive index of the anti-reflection coating to the respective substrate glass used. All ARC materials 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, and we can adapt the refractive index of our anti-reflection coatings to the respective carrier glass material's refractive index. We also apply our anti-reflection layers to the surfaces of optical lenses and other optics provided by the customer on a per-batch basis. On request, customized anti-reflection coatings for a different wavelength range are also available.

 

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

Our company specializes in the rapid production and delivery of optics with individual sizes. We can quote, fabricate, and deliver custom-sized parts as fast, as fixed-dimensions off-the-shelf usually ship. Often this is of great advantage because the optics perfectly fit into the application without any necessary modification. So, you can order exactly the dimensions you need at any time!

To request a quotation for our ARC anti-reflection coated materials with particular dimensions, please select a thickness from the table you find in the specifications or use the following button.

 

Request for Quotation

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

 

Specifications & Properties


ARC anti-reflection coating compared
to an uncoated glass surface

Uncoated window compared to ARC anti-reflection coating over wavelength
Enlarge curve to show details


Standard thicknesses

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

Thickness (mm)

Tolerance

48h-Express Service

ARC:
double-side anti-reflection coating,
substrate material Selected Float glass

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

ARC-1S:
single-side anti-reflection coating,
substrate material Selected Float glass

2,00 ±0,20
Custom thickness on request

ARC-B:
double-side anti-reflection coating,
substrate material BOROFLOAT®

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

Spectral Characteristics

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

Coating Construction

  • Index-matched multi-layer anti-reflection coating for the visible wavelength spectrum in air
  • The refractive index of the coatings matches to the refractive index of the substrate material

Flatness

  • Depending on the substrate glass 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

 

In case you need a coating batch of optical lenses custom anti-reflection coated, please let us know the exact specifications of the lenses you want to supply. It is essential to specify the lens material's refraction index, the precise lens dimensions, and focal length. The supplied lenses must not already have any coating on their surfaces. Please let us know the maximum allowed amount of light that still might be reflected by the lens surface (residual reflection), inform us about the relevant wavelength range, and let us know which light source you use.

 

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

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