SWIR Wavelengths Lighting

SWIR, or Short-Wave Infrared (IR), is a great option when visible lighting is not feasible for your application. SWIR wavelengths range from 1050 nm to 2500 nm and are not visible to the human eye. These wavelengths lie firmly beyond the reach of conventional silicon-based imaging sensors. Yet despite this, the SWIR band is finding increasing application in machine vision for the unique capabilities it offers for inspection, sorting, and quality control; as well as for ambient light applications, such as surveillance and remote sensing. A SWIR camera is required when utilizing a SWIR wavelengths.

Smart Vision Lights offers the SWIR wavelengths in our Connect-a-Light Linear Lights, Prox Spot Lights and Brick Spot Lights series of machine vision lighting products. SWIR wavelengths are available in: 1050 nm, 1200 nm, 1300 nm, 1450 nm, and 1550 nm.

SWIR wavelength options

SWIR wavelengths are typically used in the following applications:

  • Inspecting fill levels of a nontransparent container
  • Find hidden moisture in packaging
  • Inspect tamper proof security codes
  • Locate damaged or bruised fruit
  • Gauging relative water content in plants
  • Verification of coating or dryness uniformity in bulk materials
  • Anti-counterfeiting inspection
  • Glass inspection
  • Surveillance
  • Wafer and solar cell production
  • Inspect objects that are behind smoke, steam or fog

To help you determine what SWIR wavelength is right for your application, Smart Vision Lights offers a Smart Box For Testing SWIR Wavelengths (Part #: S75-SCB-SWIR), which contains the following wavelengths of LEDs: 940 nm, 1050 nm, 1200 nm, 1300 nm, 1450 nm, and 1550 nm.

Image of a Plastic Bottle Taken With a SWIR Camera

A 1550 nm SWIR light can enable a SWIR camera to see through a plastic container and show the fluid level.

Image of Silicon Wafers Passing SWIR Light

Silicon turns translucent and passes SWIR light. This property aids many machine vision applications related to the semiconductor manufacturing process.