SWIR stands for Short Wave InfraRed, a type of infrared imager. It is usually referring to the wavelength band of light that sits between 900nm and 2500nm. Unlike Long-Wave Infrared light, which is emitted from the object itself, SWIR light is similar to visible light in that photons are reflected or absorbed by an object, giving you the strongest contrast possible. A LWIR camera produces lower quality images, but you’ll want a SWIR camera for high quality.
Short Wave InfraRed Imagers
With the use of SWIR imagers on the rise, applications are utilizing the technology daily. Some of these may be including silicon inspection, laser beam profiling, hyperspectral imaging, chemical and plastics sensing, machine vision imaging, agricultural sensing, surveillance systems, and medical imaging. They give you the ability to see those super minute defects that you just can’t catch otherwise, and in some circumstances that’s the difference between life and death. In today’s age, SWIR is used in autonomous cars and phone face ID, just to name a couple applications. that are newer yet will continue to be enhanced for years to coe.
Machine Vision Imaging
Machine vision imaging is the most commonly used application for SWIR. SWIR allows these cameras to see at extremely fast frame rates, and a field of view wide enough to image a large area. SWIR cameras fit in with most vision softwares Manufacturing anything always has some unknown and risk to it. There are just so many steps involved in most manufacturing processes, there’s always a chance for something to wrong and lead to you putting out defective products.
NIR stands for Near Infrared. Usually an NIR camera is popular for applications that need to utilize this wavelength range, mainly applications with poor light conditions, which could be anything like security cameras or the traffic cameras that monitor traffic flow. It is the portion of the electromagnetic spectrum directly adjacent to the visible range, meaning it is not visible to the human eye. Until now, these applications were only possible with infrared cameras with expensive CCD sensors. Some application fields and inspection solutions require NIR for high wavelengths as well as for normal lighting, to record high-contrast images. Standard industrial cameras just don’t hold up compared to the best quality in imaging, typically due to poor light.