Transcription of Pyroelectric Infrared Detectors
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Pyroelectric Infrared Detectors
DIAS Infrared GmbH, 2006 Pyroelectric Infrared Detectors1. Principal set-upFigure 1 shows the principle set-up of a Pyroelectric Infrared detector. Components are theresponsive element and the preamplifier whose essential elements are integrated in thedetector. The sensitive element consists of a Pyroelectric chip which is thin and covered withelectrodes. In some cases an absorption layer is applied to the front of the responsive elementto improve its absorption behavior. top electrodebottom electrodepyroelectric materialamplifiersensitive elementd p S (t) A S u (t)R u (t)SFigure 1: Principle set-up of a Pyroelectric Infrared detectorThe incident radiation flux S(t) hits the radiation-sensitive element with the area AS andabsorption coefficient.
DIAS Infrared GmbH, 2006 Pyroelectric Infrared Detectors 1. Principal set-up Figure 1 shows the principle set-up of a pyroelectric infrared detector.
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