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ARC

Anti-reflection coatings on glass

Special Properties

  • High light transmission in the visible range
  • Suppression of double reflections (ghosting)
  • Low residual reflection
  • Broadband antireflection coating
  • Low absorption
  • Good abrasion resistance and adherence

Typical Applications

  • Anti-reflection coated optical windows
  • Sensor window
  • Laser scanner window
  • Optical windows for measuring devices
  • Sight glass applications
  • Automotive Cockpit window
  • Windows for camera housings

Our optical ARC anti-reflection coatings on high-quality glass substrates offer a high transmission and a very good antireflection effect in the visible wavelength range.

Uncoated glass has a natural surface reflection of about 4.25% per side. This is reduced by our ARC coatings in parts of the visible spectral range to below 0.2% per glass surface. Compared to single-layer AR-coatings with a typical 1-2% residual reflection, this is a clearly perceptible improvement.

Reflective surfaces of uncoated, transparent glass cause secondary reflections, that superimpose transmitted images with so-called "ghost images". The ARC coatings almost completely suppress this ghosting effect.

The coating system of our antireflection coatings is based on thin layers with different refractive index. These layers are alternately coated one over the other. The thickness of the respective layer is selected in such a way that for the reflected light destructive interference is caused and the light to be transmitted is subjected to constructive interference. The result is an effective antireflection effect and increased light transmittance.

Anti-reflection coatings for visible and invisible wavelengths are found in many everyday applications. Most eyeglasses, camera lenses and display front glasses etc. for example have simple AR layers. But, especially in the field of technical optics, optical antireflection coatings are often indispensable, since uncoated glasses or lenses can distort measurement results or produce blurry images. Therefore, the coating of each ARC antireflection coating is based on high-quality glass substrates and is mainly used for technical optical applications.

The ARC coatings are applied to flat, selected float glass with mirror quality. The ARC-B series is based on a high-quality, selected borosilicate glass. Both ARC coatings are always available as standard, as we regularly produce them.

We are not limited to the layers described above. If desired and if a sufficient quantity is needed, anti-reflection coatings can be applied to any other suitable glass and to any suitable optics. Also the coating of optical lenses is possible on a batch basis. Optimizations for other wavelength ranges, angle of incidence or center of gravity coatings for lasers are also feasible.

 

How do I get a quote and are there standard dimensions?

We are independent of standard dimensions and have specialized in manufacturing and delivering individual dimensions as fast as is usually only possible with standard dimensions. If you would like to request one of our ARC standard anti-reflection coatings on glass with individual dimensions, please click on the following button:

 

Request for Quotation

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Specifications

 

View on the rest reflection curve of ARC anti-reflection coating for visble light

View rest-reflection of the ARC-anti-reflection coating

 

Product Codes

  • ARC (double side BBAR-coated, index matched
    to selected float)
    (BBAR = Broad-band AR-coating)
  • ARC-1S (single side BBAR-coated, index matched to
    selected float)
  • ARC-B (double side AR-coated, index matched to BOROFLOAT® material)

Substrate Materials

Coating Construction

  • ARC: Double side multilayer coated
  • ARC-1S: Single side multilayer coated
  • ARC-B: Double side multilayer coated
  • Modified anti-reflection coating design as well as single layer coating design per enquiry

Spectral Characteristics

  • Absolute reflection Rabs </= 0,6 % at wavelength
    range 450-650 nm (i=0°) for unpolarized light
    (reflected light per surface, matched to air)
  • Average reflection Ravg < 0,3 % at wavelength
    range 430-660nm (i=0-15°) for unpolarized light
    (reflected light per surface, matched to air)
  • Coatings for other wavelengths per inquiry

Flatness

Surface Quality

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

Standard Thicknesses

(click on desired thickness for a quote)

Other Specifications

  • Adhesion according to MIL-C-675 C
  • Abrasion resistance according to MIL-M-13508 C

 

Note: We are often asked if we also do anti-reflection coatings for eyeglasses. The anti-reflective coating of spectacle lenses is not part of our production program. We have specialized exclusively in the antireflection coating of technical glass for optical applications.

 

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