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A
| A/D Offset |
Lower limit of the Analog-Digital Converter range |
| Absorption coefficient |
Ratio of the entire incident and absorbed radiant energy, same as emissivity coefficient |
| Active thermography |
→ Thermography with heat stimulation |
| Antireflex layer |
Surface coating for increased → transmission |
| Aperture |
Opening that restricts the quantity of incident radiation |
| API |
Application Programming Interface,
an → MPS add-in
|
| Atmospheric damping |
Attenuation of the infrared signal by atmospheric gases |
| Atmospheric window |
Wavelength ranges with low absorption by atmospheric gases |
|
B
| Band-pass filter |
Filter that passes frequencies only in a particular range |
| Black body |
Reference/calibration instrument for infrared cameras (with emissivity or absorption
coefficient = 1) |
|
C
| Calibration |
Adjusting the display scale so that precise information is possible in a physical unit |
| CarrierDTec |
Thermosensorik GmbH thermography system for measuring charge carrier density and lifetime |
| Charge carrier density |
Number of free charge carriers in a volume element |
| CMT |
Cadmium Mercury Telluride, a common → IR detector material |
| Cut-off wavelength |
Wavelength at which filter transmission drops below 5% |
| Cut-on wavelength |
Wavelength at which filter transmission rises above 5% |
|
D
| Delamination |
Loosening of a layer in composite materials |
| Dewar |
Evacuated, silvered flask for heat insulation (similar to glass thermos flask) |
| Dew point |
Temperature of a gas at which it begins to condense |
| Dual-band |
IR camera that detects → IR radiation in 2 frequency ranges |
| Dynamic range |
Usable intensity range (in IR cameras typically with 14-bit information depth) |
|
E
| Emissivity coefficient |
Ratio of the entire incident and absorbed radiant energy, same as absorption coefficient |
|
F
| False colours |
Colour coding of measurement data which as such do not contain any colour information |
| FOV |
Field Of View; the angle in which objects are captured |
| F-number |
Ratio of focal length and aperture of a lens, expressed as f/[number] |
| Frame rate |
→ Image refresh rate |
| Full-frame frequency |
→ Maximum full-frame frequency |
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