beamsplitter and filter coatings

AccuCoat provides our customers with a wide range of standard or custom beam splitter and filter coating options applied to your provided glass, crystal or plastic substrates.  From silicon to midNIR to protected aluminum coating, our experienced coating engineers walk you through entire process. Our thin film design software programs allow us to create the best coating solution for your needs. We also offer small run prototyping services to be certain that our coatings will be the ideal option for your high volume requirements.


  • long-pass & short-pass edge filters

  • short-pass edge filters

  • immersed and non-immersed design dichroic beam splitters

  • attenuation filters

  • hot mirrors, cold mirrors

  • beam combiners

beamsplitters & filter coatings



AccuCoat Filter Substrate Materials -
See complete list for details

  • Glass
  • Crystal
  • Plastic


Size Range:

2 mm - 18" diameter


AOI Range:

0 - 60 degrees


Utilizing our in-house measurement equipment capabilities, we are ready to meet your specific requirements.
Our coatings have been tested to meet Military Specifications, ISO Standards, and High Laser Damage Threshold tests (LDT).

Typical Applications:

  • Bar-Code Scanners
  • Heads-Up Display
  • Advanced driver-assistance systems (ADAS)
  • Cameras
  • Fiber Optics
  • Lasers used to steer or direct beam, beam splitter with AR Coatings or fold mirrors
  • Illumination Systems  - Xenon lamps for semiconductor, UV light sources - Medical uses and LED
  • Range Finders
  • Instrumentation
  • Microscopes
  • Virtual Reality (VR)
  • Augmented Reality (AR)
  • Vision assistance eReaders


Plate Beamsplitter - AC300
SHOWN 50/50 @ 45°
Other R/T ratios available (70T/30R, 60R/40T)

Plate beamsplitter AC300 curve

Hot Mirror Coating - AC340
Transmits the visible region and reflects the near infrared region.


ITO Transparent Conductive Coating - AC350
Variety of designs available including index matching and AR. T>85% in the visible