Pyroelectric light detector, pyroelectric light detecting device, and electronic device
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United States of America Patent
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Dec 23, 2014
Issued Date -
N/A
app pub date -
Oct 29, 2012
filing date -
Oct 31, 2011
priority date (Note) -
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Abstract
A pyroelectric light detector has a base unit, a support member, and a plurality of pyroelectric capacitors containing pyroelectric bodies. The support member includes a first surface and a second surface facing opposite the first surface, and has a hollow space section formed between the second surface and the base unit. The plurality of pyroelectric capacitors are supported by the support member. The plurality of pyroelectric capacitors supported by the support member are electrically connected in series in a direction matching the polarization direction. The position of the projection point for which the center of gravity of the light absorption region corresponding to the pyroelectric capacitor is projected two dimensionally with a plan view can be made to exist inside the region in which the contour line of the pyroelectric body of the pyroelectric capacitor is projected two dimensionally.
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