IR sensor with increased surface area
First Claim
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1. A sensor comprising:
- a pyroelectric element including a plurality of interconnected pyroelectric segments, wherein each segment comprises a pyroelectric crystal and two opposing arcuate ends, wherein the plurality of pyroelectric segments are oriented parallel to each other and arcuate ends of the parallel oriented pyroelectric segments cooperate to provide an at least partially arcuate perimeter of the pyroelectric element, wherein each of the plurality of pyroelectric segments includes a width and a height together defining an aspect ratio, wherein the aspect ratios of the plurality of pyroelectric segments are within ±
25% of each other, and wherein each of the pyroelectric segments is configured to either generate electricity or change resistance when exposed to infrared radiation, wherein, if the pyroelectric segments generate electricity, the electricity from the pyroelectric segments is configured to be either added or divided to generate a single, unitary signal, and wherein, if the pyroelectric segments change resistance, the resistances of the pyroelectric segments is configured to be either added or divided to generate a single, unitary signal.
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Abstract
Sensors, systems including sensors, and methods of using such sensors and systems are provided. In one aspect, a sensor includes a sensor element at least partially positioned within the housing. The sensor element includes a plurality of interconnected segments with each segment comprising a pyroelectric crystal and wherein the sensor may generate a single, unitary signal upon exposure of any segment to infrared radiation.
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Citations
26 Claims
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1. A sensor comprising:
a pyroelectric element including a plurality of interconnected pyroelectric segments, wherein each segment comprises a pyroelectric crystal and two opposing arcuate ends, wherein the plurality of pyroelectric segments are oriented parallel to each other and arcuate ends of the parallel oriented pyroelectric segments cooperate to provide an at least partially arcuate perimeter of the pyroelectric element, wherein each of the plurality of pyroelectric segments includes a width and a height together defining an aspect ratio, wherein the aspect ratios of the plurality of pyroelectric segments are within ±
25% of each other, and wherein each of the pyroelectric segments is configured to either generate electricity or change resistance when exposed to infrared radiation, wherein, if the pyroelectric segments generate electricity, the electricity from the pyroelectric segments is configured to be either added or divided to generate a single, unitary signal, and wherein, if the pyroelectric segments change resistance, the resistances of the pyroelectric segments is configured to be either added or divided to generate a single, unitary signal.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sensor comprising:
a sensor element including a plurality of interconnected segments, wherein each segment comprises a pyroelectric crystal and at least one arcuate end, wherein the plurality of segments are oriented parallel to each other and arcuate ends of the parallel oriented segments cooperate to provide an at least partially arcuate perimeter of the sensor element, wherein each of the segments is configured to generate electricity when exposed to infrared radiation, wherein the electricity from the segments is configured to be either added or divided to generate a single, unitary signal, and wherein, if the segments change resistance, the resistances of the segments is configured to be either added or divided to generate a single, unitary signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A sensor comprising:
a sensor element including a plurality of interconnected segments, wherein each segment comprises a pyroelectric crystal and at least one arcuate end, wherein the plurality of segments are oriented parallel to each other and arcuate ends of the parallel oriented segments cooperate to provide an at least partially arcuate perimeter of the sensor element, wherein each of the segments is configured to change resistance when exposed to infrared radiation, wherein the resistances of the segments are configured to be either added or divided to generate a single, unitary signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
Specification