FLIR Photon User Manual

40
Appendix A
Glossary
absorption (absorption factor). The
amount of radiation absorbed by an
object relative to the received radiation. A
number between 0 and 1.
ambient. Objects and gases that emit
radiation towards the object being
measured.
atmosphere. The gases between the
object being measured and the camera,
normally air.
autoadjust. A function making a camera
perform an internal image correction.
autopalette. The IR image is shown with
an uneven spread of colors, displaying
cold objects as well as hot ones at the
same time.
blackbody. Totally non-reective
object. All its radiation is due to its own
temperature.
blackbody radiator. An IR radiating
device with blackbody properties used to
calibrate IR cameras.
calculated atmospheric transmission. A
transmission value computed from the
temperature, the relative humidity of the
air, and the distance to the object.
cavity radiator. A bottle shaped radiator
with an absorbing inside, viewed through
the bottleneck.
color temperature. The temperature for
which the color of a blackbody matches a
specic color.
conduction. The process that makes heat
spread into a material.
continuous adjust. A function that
adjusts the image. The function works
all the time, continuously adjusting
brightness and contrast according to the
image content.
convection. The process that makes hot
air or liquid rise.
dierence temperature. A value that is
the result of a subtraction between two
temperature values.
dual isotherm. An isotherm with two
color bands instead of one.
emissivity (emissivity factor). The
amount of radiation coming from an
object compared to that of a blackbody.
A number between 0 and 1.
emittance. Amount of energy emitted
from an object per unit of time and area
(W/m

).
estimated atmospheric transmission.
A transmission value, supplied by a user,
replacing a calculated one.
external optics. Extra lenses, lters, heat
shields etc. that can be put between the
camera and the object being measured.
lter. A material transparent only to some
of the infrared wavelengths.
FOV. Field of view: The horizontal angle
that can be viewed through an IR lens.
FPA. Focal plane array: A type of IR
detector.
graybody. An object that emits a xed
fraction of the amount of energy of a
blackbody for each wavelength.
IFOV. Instantaneous Field Of View: A
measure of the geometrical resolution of
an IR camera.

FLIR Photon Specifications

General

Brand	FLIR
Model	Photon
Category	IP Camera
Language	English