FLIR i3 User Manual page 131

Term or expression
external optics
filter
FOV
FPA
graybody
IFOV
image correction (internal or external)
infrared
IR
isotherm
isothermal cavity
Laser LocatIR
laser pointer
level
manual adjust
NETD
noise
object parameters
object signal
Publ. No. T559580 Rev. a486 – ENGLISH (EN) – November 17, 2010
Explanation
Extra lenses, filters, heat shields etc. that can be put between
the camera and the object being measured.
A material transparent only to some of the infrared wavelengths.
Field of view: The horizontal angle that can be viewed through
an IR lens.
Focal plane array: A type of IR detector.
An object that emits a fixed fraction of the amount of energy of
a blackbody for each wavelength.
Instantaneous field of view: A measure of the geometrical reso-
lution of an IR camera.
A way of compensating for sensitivity differences in various parts
of live images and also of stabilizing the camera.
Non-visible radiation, having a wavelength from about 2–13 μm.
infrared
A function highlighting those parts of an image that fall above,
below or between one or more temperature intervals.
A bottle-shaped radiator with a uniform temperature viewed
through the bottleneck.
An electrically powered light source on the camera that emits
laser radiation in a thin, concentrated beam to point at certain
parts of the object in front of the camera.
An electrically powered light source on the camera that emits
laser radiation in a thin, concentrated beam to point at certain
parts of the object in front of the camera.
The center value of the temperature scale, usually expressed
as a signal value.
A way to adjust the image by manually changing certain param-
eters.
Noise equivalent temperature difference. A measure of the image
noise level of an IR camera.
Undesired small disturbance in the infrared image
A set of values describing the circumstances under which the
measurement of an object was made, and the object itself (such
as emissivity, reflected apparent temperature, distance etc.)
A non-calibrated value related to the amount of radiation re-
ceived by the camera from the object.
19 – Glossary
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