Short-wave infrared (SWIR) vs Near infrared (NIR) and SWIR Imaging

What is near infrared (NIR) and shortwave infrared (SWIR)? What are their advantages and suitable applications?

Typically we define near infrared (NIR) from 780 nm to 1400 nm and shortwave infrared (SWIR) from 1400 nm to 3000 nm. But it is also common to refer to the entire range from 780 nm up to 3000 nm as NIR or SWIR.

  • Automotive
  • Surveillance
  • Remote sensing
  • Wafer inspection
  • Packaging and filling inspection
  • Plastic sorting
  • Agriculture
  • Pharmaceutical inspection

How are NIR and SWIR detected?

There are multiple methods and materials to detect NIR and SWIR including InGaAs (indium gallium arsenide), MCT (mercury cadmium telluride), and QDIP (quantum dot infrared photodetector). These three are discussed below.

--

--

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
For 4D Sensing, AR, AV/Robot, and AIoT

For 4D Sensing, AR, AV/Robot, and AIoT

162 Followers

Marc. Y. , Tech Leader. Focus on new techs such as 4D Sensing, AR, AV/Robot, and AIoT. More at http://4da.tech/