What Is A Thin Film Optical Coating?

Optical substrates are often fixed with thin film optical coatings that helps in changing its optical properties. This coating is applied in such a way that the result coat is extremely thin. The number of thin layers applied in this manner affects the thickness of the coating and impacts the resulting wavelength of the light transmitted through it. 

Here are a few things that a thin film optical coating consists of:

  • Indium Tin Oxide
  • Dichroic filters
  • Notch filter
  • Ban pass color filters
  • Metal coating
  • Neutral density filters
  • Beam splitters
  • Cold Mirrors
  • Precision hot mirrors
  • Front and back surface mirrors
  • Anti reflective coatings

It is possible to apply a thin layer of optical coating to a glass substrate which is as thin as 70 microns and also very small at the same time. 

Most of these glass substrates are designed to remain durable and sturdy for a long period of time. All fabricated glass components and custom glass solutions that come from a variety of industries can be coated using this manner. 

Most market suppliers today make use of a unique technology that makes use of an electron beam along with an ion supported beam deposition technology that not only influences and controls the level of reflection from such glass substrates but also controls the level of transmission out of the glass substrate. At the same time, the level of absorption and resistance through the material is also impacted to a large extent, by the quality of the thin coating done over the glass substrate. 

Today, this technology is being used for a wide number of purposes, including flat panel display units, touch and gesture recognition, entertainment purposes, photonics, outdoor lighting and much more.