Glossary |
Terms that are on use on this site.
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| There are 7 entries in the glossary. |
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| Saphire | A material sometimes used as an optical element such as windows or lenses for Near Infrared or Medium Wavelength Infrared systems. This material transmits well in the visible spectrum, but not at all in the LWIR region. |
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| Signal To Noise Ratio | A measurement of how strong the desired target signal is, compared to the level of background noise. |
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| Solar Loading | Heating of objects by solar radiation. Solar loading will cause background objects (for example, trees or roadways) to appear warmer in the day than at night. |
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| Spatial Resolution | The smallest spatial detail in an image that can be resolved. Spatial resolution is described in a variety of ways, including the IFOV or the Airy disk size (both previously defined). As a broad generalization, spatial resolution is sometimes described in terms of the number of pixels in the imager array (angular FOV of the lens and the range to the target must also be considered). |
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| Spot Temperature Analysis | The ability to measure temperature numerically at a single spot in an image. Typically, low end infrared cameras will have a single crosshair fixed in the center of the display and the camera will read out a basic numeric temperature for that single spot. Advanced infrared cameras will generally have movable spots that allow measurement of any point in the image. Typically, the advanced cameras make spot temperature analysis easier and more accurate with multi spot capability, hot / cold spot auto locate, line and histogram readouts. |
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| Stefan-Boltzmann Law | Describes the total rate of energy emission per unit surface area. The Stefan-Boltzmann Law is the spectrally integrated form of Planck’s Law (integrated over all wavelengths). This result takes the form E=sT4, where E is the rate of energy emitted per unit area, T is the absolute temperature in Kelvin, and s is a constant. |
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| SWIR (Short Wave Infrared) | The spectral region from about 3-5 microns where some imaging systems operate. Also called MWIR or Mid Wavelength Infrared. |
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Glossary V2.0 |
Thermal Camera in the world. Above are actual thermal images taken with the RAZ-IR We have more information, videos, links and contact information with an emphasis on electrical audits and monitoring. 
