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infrared radiation Dictionary Terms

heat lamp
A lamp designed to emit a large amount of infrared radiation; used in applications requiring heat.
infrared spectroscopy
The measurement of the ability of matter to absorb, transmit or reflect infrared radiation and the relating of the resultant...
calorescence
The production of visible light by infrared radiation whereby the light is produced by heat and not by any direct change in...
infrared optic
Infrared optics refer to optical components and systems designed to manipulate and control infrared (IR) light, which lies...
photoconductive detector
A device for detecting visual and infrared radiation using a photoconductor as the principle sensing element.
reflecting microscope
A microscope that uses a reflecting objective; often used with ultraviolet or infrared radiation.
radiant heat
Infrared radiation emitted from a source that is not heated sufficiently to give off visible radiation.
lead selenide cell
A thin-film photoconductive cell that is sensitive to the infrared region. The photosensitive material of the cell is...
infrared photography
The photographic recording of images on a medium sensitive to infrared radiation, using a source capable of emitting in the...
long-wave infrared
Long-wave infrared (LWIR) refers to a specific range of the infrared spectrum. Infrared radiation is divided into three main...
infrared thermistor
A thermistor that uses a semiconductor that is sensitive to infrared radiation to measure the radiation's intensity.
InGaAs photodiode
An InGaAs photodiode refers to a photodetector device that is constructed using a semiconductor material composed of a...
infrared light source
An infrared light source is a device that emits light in the infrared spectrum, which lies beyond the visible spectrum of...
germanium crystal
Germanium crystal refers to a crystalline form of the element germanium (Ge), which is a metalloid and semiconductor...
near-infrared camera
A near-infrared (NIR) camera is an imaging device designed to capture images in the near-infrared region of the...
flash photographic density filter
A filter, partially opaque to near-ultraviolet, visible and infrared radiation, that may be made by exposing and processing...
thermomagnetic imaging
The production of an image on a magnetic film that is exposed to infrared radiation and heated to a point above Curie...
infrared phosphor
A phosphor, such as sulfide or selenide, that can be excited to luminescence by incident infrared radiation simultaneous to...
infrared reflector
An optical component coated to reflect infrared radiation. Gold, silver and aluminum are typical coating materials.
polarimetric analysis
The determination of a substance's identity or quantity through the analysis of its optical rotation. For example, the...
detector-Dewar assembly
A detector-Dewar assembly typically refers to a combination of a detector and a Dewar flask used in scientific instruments,...
short wavelength infrared
Short wavelength infrared (SWIR) refers to the portion of the infrared spectrum that encompasses wavelengths roughly between...
infrared alarm system
A system that uses infrared detectors and related instrumentation to determine when abnormal amounts of infrared radiation,...
infrared instrument
Any of the photoelectric and thermal detectors, spectrographs and monochromators, thermographs, scanners, amplifier tubes,...
infrared thermal detector
Used to detect radiation from the infrared region. The functional process includes absorption of infrared radiation, which...
infrared jamming
A countermeasure used against heat seeking missiles to reduce their effectiveness. Normally it involves the emittance of...
infrared photomicrography
Photographic recording that uses infrared radiation as the light source to form an image of a microscopic object and a...
infrared photoconductor
A photoconductor that demonstrates increased conductivity during its exposure to infrared radiation.
infrared camera
An infrared camera, also known as a thermal imaging camera or IR camera, is a device that captures and visualizes the...
calorific rays
Name originally given to the sun's infrared radiation by Sir William Herschel in his Philosophical Transactions of 1800.
thermography
Thermography is a technique that involves the use of an infrared imaging device, called a thermal camera or infrared camera,...
snooperscope
An instrument used for viewing in low levels of illumination by means of infrared radiation. A high-aperture lens forms an...
centerburst
In an interferogram, an intense portion of the recording that corresponds in size to the amount of infrared radiation...
infrared absorption
Infrared radiation absorbed by crystals as a result of the excitation of lattice vibrations in which ions having opposite...
infrared vidicon
A vidicon that has a photoconductive surface that can be excited by infrared radiation.
Nernst glower
A Nernst glower, also known simply as a Nernst lamp or Nernst filament, is a type of incandescent lamp or radiant heater...
night-vision device
A device that uses low-level visible radiation or infrared radiation to produce a visual image of a night scene. These...
thermogram
Also known as analog thermogram. The resultant photograph, illustrating, in tones ranging from black to white, the spatial...
hot mirror
A mirror with a coating that reflects infrared radiation and transmits visible light.
infrared bolometer
A superconducting bolometer, operating at very low temperatures, that is used to detect infrared radiation.
mid-wave infrared
MWIR stands for mid-wave infrared, referring to a specific range of wavelengths within the infrared spectrum. Infrared...
photronic cell
A photovoltaic cell usually sensitive to infrared radiation. It may have a copper base and a film of cuprous oxide. When it...
infrared
Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but...
Debot effect
The conversion of an internal latent image into a surface latent image through exposure to infrared radiation. The converse...
vibrational transition
A vibrational transition refers to a change in the vibrational energy of a molecule. Molecules consist of atoms that are...
thermal-infrared camera
A thermal-infrared camera, often referred to simply as a thermal camera, is a type of imaging device that detects infrared...
phosphorography
A process used in pyrometry and photothermometry to create a photographic record of a surface's temperature gradients....
thermal imaging
The process of producing a visible two-dimensional image of a scene that is dependent on differences in thermal or infrared...
infrared detector
An infrared detector is a device that is used to detect and measure infrared radiation, which lies beyond the visible...
arc flash
An arc flash is a sudden release of electrical energy due to an electric arc — a continuous, high-current discharge of...
forward-looking infrared
A night-vision device that uses one or more infrared transducers to scan a scene in the 3- to 5-µm or 8- to...
infrared radiation source
Any object that emits radiation of a wavelength lying between about 0.75 to 1000 µm. A calibrated secondary source...
infrared lens
An infrared lens is an optical component specifically designed and optimized for transmitting, focusing, or manipulating...
infrared light-emitting diode
An infrared light-emitting diode (IR LED) is a semiconductor device that emits infrared light when an electric current...
FTIR spectrometer
FTIR (Fourier transform infrared) spectrometer is a powerful analytical instrument used to obtain an infrared spectrum of...

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