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The gases between the object being measured and the camera, normally air.
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A function making a camera perform an internal image correction.
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The IR image is shown with an uneven spread of colors, displaying cold objects as well as hot ones at the same time.
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Totally non-reflective object. All its radiation is due to its own temperature.
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An IR radiating equipment with blackbody properties used to calibrate IR cameras.
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A transmission value computed from the temperature, the relative humidity of air and the distance to the object.
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A bottle shaped radiator with an absorbing inside, viewed through the bottleneck.
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The temperature for which the color of a blackbody matches a specific color.
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The process that makes heat diffuse into a material.
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A function that adjusts the image. The function works all the time, continuously adjusting brightness and contrast according
to the image content.
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Convection is a heat transfer mode where a fluid is brought into motion, either by gravity or another force, thereby transferring
heat from one place to another.
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An isotherm with two color bands, instead of one.
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The amount of radiation coming from an object, compared to that of a blackbody. A number between 0 and 1.
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Amount of energy emitted from an object per unit of time and area (W/m2)
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Objects and gases that emit radiation towards the object being measured.
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A transmission value, supplied by a user, replacing a calculated one
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Extra lenses, filters, heat shields etc. that can be put between the camera and the object being measured.
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A material transparent only to some of the infrared wavelengths.
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Field of view: The horizontal angle that can be viewed through an IR lens.
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Focal plane array: A type of IR detector.
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An object that emits a fixed fraction of the amount of energy of a blackbody for each wavelength.
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Instantaneous field of view: A measure of the geometrical resolution of an IR camera.
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A way of compensating for sensitivity differences in various parts of live images and also of stabilizing the camera.
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Non-visible radiation, having a wavelength from about 2–13 μm.
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infrared
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A function highlighting those parts of an image that fall above, below or between one or more temperature intervals.
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A bottle-shaped radiator with a uniform temperature viewed through the bottleneck.
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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.
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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.
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The center value of the temperature scale, usually expressed as a signal value.
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A way to adjust the image by manually changing certain parameters.
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Noise equivalent temperature difference. A measure of the image noise level of an IR camera.
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Undesired small disturbance in the infrared image
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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.)
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A non-calibrated value related to the amount of radiation received by the camera from the object.
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The set of colors used to display an IR image.
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Stands for picture element. One single spot in an image.
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Amount of energy emitted from an object per unit of time, area and angle (W/m2/sr)
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Amount of energy emitted from an object per unit of time (W)
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The process by which electromagnetic energy, is emitted by an object or a gas.
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A piece of IR radiating equipment.
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The current overall temperature measurement limitation of an IR camera. Cameras can have several ranges. Expressed as two
blackbody temperatures that limit the current calibration.
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A temperature which the ordinary measured values can be compared with.
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The amount of radiation reflected by an object relative to the received radiation. A number between 0 and 1.
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Relative humidity represents the ratio between the current water vapour mass in the air and the maximum it may contain in
saturation conditions.
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The areas that contain temperatures outside the present level/span settings are colored with the saturation colors. The saturation
colors contain an ‘overflow’ color and an ‘underflow’ color. There is also a third red saturation color that marks everything
saturated by the detector indicating that the range should probably be changed.
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The interval of the temperature scale, usually expressed as a signal value.
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Amount of energy emitted from an object per unit of time, area and wavelength (W/m2/μm)
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A value which is the result of a subtraction between two temperature values.
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The current overall temperature measurement limitation of an IR camera. Cameras can have several ranges. Expressed as two
blackbody temperatures that limit the current calibration.
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The way in which an IR image currently is displayed. Expressed as two temperature values limiting the colors.
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infrared image
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Gases and materials can be more or less transparent. Transmission is the amount of IR radiation passing through them. A number
between 0 and 1.
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An isotherm showing a linear spread of colors, instead of covering the highlighted parts of the image.
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Refers to the video mode of a IR camera, as opposed to the normal, thermographic mode. When a camera is in video mode it
captures ordinary video images, while thermographic images are captured when the camera is in IR mode.
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