Infrared (IR) refers to electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (nm) to 1 mm. This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz. Most of the thermal radiation emitted by objects near room temperature is infrared.
Infrared radiation was discovered in 1800 by astronomer William Herschel, who discovered a type of invisible radiation in the spectrum beyond red light, by means of its effect upon a thermometer. Slightly more than half of the total energy from the Sun was eventually found to arrive on Earth in the form of infrared. The balance between absorbed and emitted infrared radiation has a critical effect on Earth's climate.
Infrared energy is emitted or absorbed by molecules when they change their rotational-vibrational movements. Infrared energy elicits vibrational modes in a molecule through a change in the dipole moment, making it a useful frequency range for study of these energy states for molecules of the proper symmetry. Infrared spectroscopy examines absorption and transmission of photons in the infrared energy range.
Infrared radiation is used in industrial, scientific, and medical applications. Night-vision devices using active near-infrared illumination allow people or animals to be observed without the observer being detected. Infrared astronomy uses sensor-equipped telescopes to penetrate dusty regions of space, such as molecular clouds; detect objects such as planets, and to view highly red-shifted objects from the early days of the universe. Infrared thermal-imaging cameras are used to detect heat loss in insulated systems, to observe changing blood flow in the skin, and to detect overheating of electrical apparatus.
Thermal-infrared imaging is used extensively for military and civilian purposes. Military applications include target acquisition, surveillance, night vision, homing and tracking. Humans at normal body temperature radiate chiefly at wavelengths around 10 μm (micrometers). Non-military uses include thermal efficiency analysis, environmental monitoring, industrial facility inspections, remote temperature sensing, short-ranged wireless communication, spectroscopy, and weather forecasting.

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Infrared - Wikipedia, the free encyclopedia
NIR and SWIR is sometimes called "reflected infrared" while MWIR and LWIR is sometimes referred to as "thermal infrared." Due to the nature of the blackbody ...
LWIR - thermal imaging - thermography camera - Long Wave ...
Xenics offers a variety of infrared cameras operating in the LWIR region, based on uncooled bolometer arrays as well as on cooled arrays. Visit us for more ...
LWIR or MWIR Infared Imaging: Which is Best for Your Application?
Electrophysics' Infrared Sensitive Cards offer users of infrared optical devices an easy way to locate laser beams and estimate beam-size, troubleshoot problem ...
Tau 2 LWIR Camera Cores | FLIR Systems
Tau 2 is the next generation product in FLIR's Tau family of thermal imaging camera cores. Two key differences are the introduction of:New, more powerful ...
DARPA developing personal LWIR cameras to give soldiers heat ...
Apr 18, 2013 ... DARPA is working on a five-micron LWIR camera that is small enough to be carried by individual soldiers.
P-007 LWIR - Allied Vision Technologies
LWIR camera, microbolometer sensor, 320 x 240 pixels. The Pearleye P-007 LWIR camera incorporates an uncooled microbolometer sensor with 320 x 240 ...
SWIR and LWIR Camera Technology - Allied Vision Technologies
Visible and invisible light. Infrared radiation. In everyday life, we encounter electromagnetic radiation in many different forms such as visible light, ultraviolet light, ...
LWIR - Specim
Even on a pitch dark night - in ambient temperatures even sub freezing or tropical conditions; SPECIM's LWIR-C is able to perform chemical imaging! Thermal ...
LWIR Camera TEL-1000 LWIR - Photonics Online
Telops' TEL-1000 LWIR camera is a revolutionary long wave IR camera with the ability to provides either raw or calibrated data in real-time without any need for ...
Longwave infrared (LWIR) coded aperture dispersive spectrometer
Longwave infrared (LWIR) coded aperture dispersive spectrometer. C. Fernandez1, B. D. Guenther1, M. E. Gehm1, D. J. Brady1 and M. E.. Sullivan2.
Search results for "LWIR"
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LWIR in science
LWIR | Western Michigan University | CourseRank Search
Explore the role of immigration in transforming racial and ethnic identity, inter- group relations, patterns of racial/ethnic stratification and inter-generational ...
LWIR 4000 - Research in Race and Ethnic Relations - Acalog ACMS™
Western Michigan University, Kalamazoo MI 49008-5200 USA | (269) 387-1000. Western Michigan ... LWIR 4000 - Research in Race and Ethnic Relations ...
Automatic explosive hazard detection in FL-LWIR and FL-GPR data
Title: Automatic explosive hazard detection in FL-LWIR and FL-GPR data. Author: Keller, James M.; Stone, Kevin E.; University of Missouri-Columbia. Graduate ...
[PDF]Ultra-thin Multiple-channel LWIR Imaging Systems - Duke University
Ultra-thin Multiple-channel LWIR Imaging Systems. M. Shankar a. , R. Willett a. , N. P. Pitsianis a. , R. Te Kolste b. , C. Chen c. , R. Gibbons d. , and D. J. Brady a.
LWIR imaging method noninvasively monitors honeybee hives ...
Feb 1, 2011 ... Using an LWIR camera with an uncooled 324 × 256 pixel ... Institute set to unite photonics and electronics at the University of Southampton ...
Detection of disturbed earth using hyperspectral LWIR imaging data ...
University of Bristol · Main research site Explore Bristol ... Detection of disturbed earth using hyperspectral LWIR imaging data. Research output: Chapter in ...
[PDF]a tutorial guide to the lwir scene generator for hyperspectral image ...
BRIGHAM YOUNG UNIVERSITY. GRADUATE COMMITTEE ... hyperspectral image cube using the LWIR scene generator. The resulting radiance cube consists ...
Low Cost LWIR Interferometric HSI System | SBIR.gov
The technology is an evolution of a LWIR hyperspectral technology patented by the University of Hawaii and licensed to Spectrum Photonics based on a static ...
[PDF]640 512 Pixels Long-Wavelength Infrared (LWIR ... - CiteSeerX
(LWIR) focal plane arrays (FPAs) with high operability and spatial uniformity. ... S. Krishna is with the University of New Mexico, Albuquerque, NM 87106. USA.
[PDF]Longwave infrared (LWIR) coded aperture dispersive spectrometer
1 Duke University,. Fitzpatrick ... infrared (LWIR) spectrometer that uses a microbolometer array at the de- .... 3D-Mechanical layout for the LWIR spectrometer.
Books on the term LWIR
Surveillance and Reconnaissance Imaging Systems: Modeling ...
Surveillance and Reconnaissance Imaging Systems: Modeling ...
Jon C. Leachtenauer, Ronald G. Driggers, 2001
Midwave systems detect energy that can be object-reflected, but much of the energy is emitted from the objects according to Planck's radiation laws (except in the case where direct sunlight is reflected). Longwave infrared (LWIR) systems [3]  ...
Ballistic Missile Defense Technologies
Ballistic Missile Defense Technologies
Objects more or less at room temperature emit long-wavelength infrared (LWIR) radiation having wavelengths mostly near 10 microns. (By comparison, the Sun is hot enough to shine in the visible portion of the spectrum, with wavelengths ...
Proceedings of the Sixth International Symposium on Long ...
Proceedings of the Sixth International Symposium on Long ...
Sheng S. Li, 1999
The quality of the material and available large area substrate affects large-format MCT FPAs at LWIR and VLWIR. With the improvement of the passivtaion technology in MCT, the stability and the quality of MCT FPAs at LWIR has been greatly ...
Optoelectronic Devices: Advanced Simulation and Analysis
Optoelectronic Devices: Advanced Simulation and Analysis
Joachim Piprek, 2006
This book features chapters which provide an introduction to the physics and equations, as well as the material parameters essential for realistic simulations.
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DARPA developing personal LWIR cameras to give soldiers heat vision
DARPA is working on a five-micron LWIR camera that is small enough to be carried by individual soldiers.
DARPA Demonstrates Five-micron Pixel LWIR Camera | UAS VISION
The military uses long-wave infrared (LWIR) cameras as thermal imagers to detect humans at night. These cameras are usually mounted on vehicles as they are too
LWIR Laser Interferometer - Laser Physics UK Ltd. (Photonics Spectra | Jul 2013 | New Products)
4D Technology’s AccuFiz long-wavelength infrared (LWIR) laser interferometer, suitable for measuring concave, convex, afocal infrared components...
AXIS 5503-031 TA-LENS LWIR 19mm | freemanmathew19
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Raved By Faith: LWIR- Look What I Repurposed!
I like to carry my notebook with me when I travel, along with an assortment of pictures, tickets, drawings, clippings, and other mementos to create collages. Normally I stuff whatever I'm bringing into a plastic bag, but that usually never works; paper doesn't fit and the bag won't close, or it rips and I'm left with a stack of paper, magazine clippings, and the like.
LWIR Camera: SSC-320L
LWIR Camera: SSC-320L
News: DARPA develops a low-cost LWIR Thermal Camera - element14
DARPA's AWARE program created 5-micron pixel Long-Wave InfraRed (LWIR) thermal camera prototype (via DARPA) DARPA, the head US Defense agency responsible for most of the military’s new
Find lwir camera 640×480 | black dinette sets
Posted on September 2, 2013 by goolit.
Can LWIR from a cooler object cause warmer objects to be even more warmer? | The Drinking Water Advisor
There is ongoing debate regarding the earth's energy budget, the role (or existance) of downwelling infrared radiation, and whether long wave infrared radiation (LWIR) from a cooler object can cause warmer objects to be even more warmer. Most recently the view points have been subject of a series of exchanges on Dr. Roy Spencer's blog.…
Sofradir EC Introduces Miniature Thermal Imaging Engine for High Performance LWIR Imaging | Night Vision Cameras
night vision camerasnight vision camerasAs a result of advances in cooled infrared detector technology, engines are now available that deliver remarkable