Infrared radiation detector
First Claim
1. An infrared radiation detector comprising:
- a pyroelectric body having first and second opposite major surfaces;
first and second electrodes arranged opposite one another on the first and second major surfaces, respectively, said first and second electrodes and a portion of the pyroelectric body therebetween forming a first pyroelectric detector element; and
third and fourth electrodes arranged opposite one another on the first and second major surfaces, respectively, said third and fourth electrodes and a portion of the pyroelectric body therebetween forming a second pyroelectric detector element; and
characterized in that;
the first and fourth electrodes have extended portions which overlap each other at an edge of the pyroelectric body; and
the detector further comprises edge connection means for electrically connecting the extended portions of the first and fourth electrodes.
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Accused Products
Abstract
An infrared radiation detector comprises two differentially connected pyroelectric detector elements in parallel-opposition. The detector elements are formed in a single body of pyroelectric material having two adjacent pairs of overlapping electrodes on opposite major surfaces of the body. The two detector elements are poled in the same direction. To electrically connect the top electrodes of each pair to the bottom electrodes of the other pair, each electrode is provided with an L-shaped extension. Each extension is arranged such that at an edge of the body the extension of the top electrode of one pair overlaps the extension of the bottom electrode of the other pair. The overlapping extensions can be electrically connected together by conductive epoxy or by conductive clips on the edge of the body.
28 Citations
20 Claims
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1. An infrared radiation detector comprising:
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a pyroelectric body having first and second opposite major surfaces; first and second electrodes arranged opposite one another on the first and second major surfaces, respectively, said first and second electrodes and a portion of the pyroelectric body therebetween forming a first pyroelectric detector element; and third and fourth electrodes arranged opposite one another on the first and second major surfaces, respectively, said third and fourth electrodes and a portion of the pyroelectric body therebetween forming a second pyroelectric detector element; and characterized in that; the first and fourth electrodes have extended portions which overlap each other at an edge of the pyroelectric body; and the detector further comprises edge connection means for electrically connecting the extended portions of the first and fourth electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification