Pyroelectric infrared detector
AssigneeSumitomo Metal Co., Ltd.
InventorsKeiji Takamatsu, Hideki Takahashi
Life of this patent
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Abstract
A pyroelectric infrared detector for use in, for example, an intrusion alarming system has a pyroelectric element, a FET for picking up the output of the pyroelectric element, a capacitor connected in parallel to the pyroelectric element, and other circuit parts. These constituent parts are integrally packed in a package.
Claims8
A pyroelectric infrared detector, comprising a pyroelectric element and a FET for picking up the output of said pyroelectric element, a capacitor connected in parallel to said pyroelectric element, and a package in which at least said pyroelectric element and said capacitor are accommodated integrally.
Dependencies are inferred from the claim text.