Anti-Reflective Coatings for LiDAR Applications


Custom Anti-Reflective Coatings on Tough Glass Substrates

Anti-Reflective Coatings are being widely implemented to improve the efficiency of LiDAR detectors.  LiDAR technology involves sending light from a source and measuring the returned beam.  This technology is used in a wide range of mapping applications and is currently being implemented in navigation control for autonomous vehicles.  The two commonly used wavelengths are 905nm (standard CMOS Or CCD Si detectors) and 1550nm (InGaAs detectors).  In order for these LiDAR systems to operate effectively the detectors must be able to differentiate the returning beam from other light sources such as streetlights, on-coming head lights, ambient light and even other LiDAR systems.  JNS Glass & Coatings offers several robust filter solutions for filtering out the “noise” while simultaneously providing added durability for extreme environment LiDAR applications.

Custom anti-reflection coatings are applied to each surface of JNS optical bandpass filters to provide minimum reflection at the 905nm bandwidth or the 1550nm bandwidth.  Oleophobic coatings can also be applied to the LiDAR filters.  An oleophobic coating extends the life of the LiDAR filter by repelling water and oil, and by preventing dirt and dust buildup on the surface.  The oleophobic coating protects the AR coatings and surface of the filter from abrasion and scratching.   JNS Glass & Coatings provides LiDAR filter designed for the harshest environments using manufacturing techniques such as heat tempering or chemically strengthening along with cutting edge materials such as:

  • Corning™ Gorilla Glass
  • Acrylic
  • Borofloat®
  • Sapphire
  • Filter Glass