Infrared detection system
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United States of America Patent
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-
Sep 30, 1980
Issued Date -
N/A
app pub date -
Sep 15, 1978
filing date -
Sep 15, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An infrared radiation intruder detection system is disclosed which employs a unique pyroelectric detector array. The array comprises a pyroelectric plastic film having electrodes arranged on opposing surfaces to define a plurality of heat-sensitive capacitors connected in parallel. According to a preferred embodiment, the film of selected detector elements is poled to a polarity opposite that of the other elements to cause internal cancellation of signals due to events which affect an even number of detectors simultaneously.
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