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UV, VIS, NIR Anti-Reflective: Multi-Layer Broadband Coatings

Reducing surface reflection significantly across the 420nm to 700nm spectrum, these coatings offer virtually glare-free transmission, ensuring exceptional optical clarity and added protection for susceptible glasses, meeting MIL-M-13508C para 4.4.6, MIL-C-675A, MIL-C-675A para 4.6.8, and MIL-C-14806A specifications for resilience in varied environments.

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Product description

These Multilayer Broad Band Anti-Reflection Coatings are designed to significantly reduce surface reflection, offering virtually glare-free transmission in the visible range. This makes them indispensable for a wide range of applications where uncompromised optical clarity is paramount.

Boasting an average reflection of less than 0.3% across the spectrum of 420nm to 700nm, our Multilayer Broad Band Anti-Reflection Coatings deliver an exceptional optical performance that can dramatically improve the effectiveness of your devices. Furthermore, the maximum absolute reflection between 420nm and 680nm is held below 0.6%, ensuring consistently clear visuals with minimal glare.

G&H's Multilayer Broad Band Anti-Reflection Coatings don’t just improve the performance of your glass - they protect it too. The coatings shield the glass from atmospheric attack, preserving its condition and extending its lifespan. This added protection is especially useful for glass that is susceptible to staining, helping to maintain the quality of your devices over time.

Suitable for glasses with refractive indices between 1.47 and 1.85, these coatings are highly versatile and can be used in a diverse range of applications. They comply with the rigorous environmental conditions outlined in MIL-M-13508C para 4.4.6., MIL-C-675A, MIL-C-675A para 4.6.8., and MIL-C-14806A. This compliance with military specifications confirms the resilience of these coatings and their ability to perform in challenging environments.

Applications

  • Commercial
  • Industrial
  • Military

Key Metrology

  • UV, VIS, and IR spectrometers
  • 4 point conductivity probe
  • MIL standard temperature and humidity chambers

Key Equipment & Processes

  • Thin-film design including bespoke HUD design software
  • PVD, CVD, and IBS coating platforms
  • Laser test to MILT-DTL-62422
  • TS1888 DLC test bench

Key features

  • Average reflection of less than 0.3% across the spectrum of 420nm to 700nm
  • Maximum absolute reflection between 420nm and 680nm is held below 0.6%
  • Suitable for glasses with refractive indices between 1.47 and 1.85
  • MIL-M-13508C para 4.4.6., MIL-C-675A, MIL-C-675A para 4.6.8., and MIL-C-14806A
  • Manufacturing in the UK and US

Specifications

  • Average reflection 420 to 700nm <0.3%
  • Maximum absolute reflection 420 to 680nm <0.6%
  • Protects stain-prone glass from atmospheric attack
  • Suitable for glasses of refractive indices of 1.47 to 1.85

Substrates

  • Clear optical glass
  • Filter glass
  • Ceramic glass
  • Sapphire
  • Polycarbonate (including dip-coated visors)
  • Nickel-plated Aluminium
  • Nickel-plated Beryllium
  • Active Devices

Conformance

  • MIL-M-13508C para 4.4.6
  • MIL-C-675A
  • MIL-C-675A para 4.6.8
  • MIL-C-14806A

  • Typical Reflectance Curve for Single Surface N-BK7 (n=1.52)

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