Datasheet

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AB
D
E
E
C
4
INFRARED:
more than meets the eye
The infrared camera
Infrared energy (A) coming from an
object is focused by the optics (B) onto
an infrared detector (C). The detector
sends the information to sensor
electronics (D) for image processing.
The electronics translate the data
coming from the detector into an image
(E) that can be viewed in the viewnder
or on a standard video monitor or LCD
screen.
Infrared - part of the electro-
magnetic spectrum
Our eyes are detectors that are
designed to detect visible light (or
visible radiation). There are other forms
of light (or radiation) that we cannot
see. The human eye can only see a
very small part of the electromagnetic
spectrum. At one end of the spectrum
we cannot see ultraviolet light, while
at the other end our eyes cannot see
infrared. Infrared radiation lies between
the visible and microwave portions of
the electromagnetic spectrum. The
primary source of infrared radiation is
heat or thermal radiation.
Any object that has a temperature
above absolute zero (-273.15 degrees
Celsius or 0 Kelvin) emits radiation in
the infrared region. Even objects that
we think of as being very cold, such
as ice cubes, emit infrared radiation.
We experience infrared radiation
every day. The heat that we feel from
sunlight, a re or a radiator is all
infrared. Although our eyes cannot see
it, the nerves in our skin can feel it as
heat. The warmer the object, the more
infrared radiation it emits.
Infrared thermography is the art of
transforming an infrared image into
a radiometric one, which allows
temperature values to be read from
the image. In order to do this, complex
algorithms are incorporated into the
thermal imaging camera.
Gamma
Rays
X-Rays Ultra-
Violet
Visible
Infrared
Microwaves
Radio
UHF VHF
Visible Infrared
258
12 micrometers
SW LW