Anti-Reflective

Anti-Reflective

The reflectivity of an optical surface can be reduced by the addition of one or more non-absorbing dielectric films. An anti-reflective coating will also enhance transmission in a series of optical components.

About AR

  • A single layer (quarter wave) of MgF2 will typically reduce reflectivity (glass with a 1.52 index) from 4% to 1.5%
  • A multi-layer AR design can reduce reflection from 4% to .3% in the visible
  • A “V” design can reduce reflection to .1% across a narrow band of wavelength
  • Anti Reflective coatings can be designed to function in specific bands such as UV, IR and NIR.

Features

  • Large Format (up to 35″ diameter)
  • Low Cost (large volume throughput coaters coupled with low overhead operations)
  • Tight Tolerance (±5nm at 50% transmission)
  • Glass or plastic Substrates
  • Volume Production ( fourteen 96″ diameter vacuum PVD chambers)
  • Short Lead Times

Typical BBAR Visible and BBAR Nir wavelengths

Anti-Reflective V-COAT Wavelength

 

 

 

 

 

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