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Long-wave infrared (LWIR) cameras, sometimes called "far-infrared", operate at 8 to 12 μm and can see heat sources, such as hot engine parts or human body heat, several kilometers away. Longer-distance viewing is made more difficult with LWIR because the infrared light is absorbed , scattered , and refracted by air and by water vapor.
Roberts-Gordon LLC is an international manufacturer of HVAC equipment, controls and associated accessories. The company is known for inventing the first commercially produced gas-fired, low-intensity infrared product, CORAYVAC, into the heating industry. [ 1 ]
Detection in the MWIR and LWIR windows is obtained using 30% [(Hg 0.7 Cd 0.3)Te] and 20% [(Hg 0.8 Cd 0.2)Te] cadmium respectively. HgCdTe can also detect in the short wave infrared SWIR atmospheric windows of 2.2 to 2.4 μm and 1.5 to 1.8 μm. HgCdTe is a common material in photodetectors of Fourier transform infrared spectrometers. This is ...
Imaging systems that use MWIR technology function better with solar reflections on the target's surface and produce more definitive images of hot objects, such as engines, compared to LWIR technology. [13] However, LWIR operates better in hazy environments like smoke or fog because less scattering occurs in the longer wavelengths. [10]
FLIRs are of two major types: one is the high-end, cooled, MWIR band (3–5 um) camera, which has better temperature resolution and frame rate but is more expensive and bulky, and the other is uncooled microbolometers which operate in the LWIR band (8–14 um) of the light spectrum, are small and cheap but are less "sharp" with regards to ...
The optical window is also referred to as the "visible window" because it overlaps the human visible response spectrum. The near infrared (NIR) window lies just out of the human vision, as well as the medium wavelength infrared (MWIR) window, and the long-wavelength or far-infrared (LWIR or FIR) window, although other animals may perceive them ...
Infrared light from the LED of a remote control as recorded by a digital camera. A hyperspectral image is a "picture" containing continuous spectrum through a wide spectral range at each pixel. Hyperspectral imaging is gaining importance in the field of applied spectroscopy particularly with NIR, SWIR, MWIR, and LWIR spectral regions.
Infrared heaters can be operated in vacuum or atmosphere. One classification of infrared heaters is by the wavelength bands of infrared emission. Short wave or near infrared for the range from 750 nm to 1.4 μm; these emitters are also named "bright" because still some visible light is emitted; Medium infrared for the range between 1.4 μm and ...
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