Sensor for spectral-polarization imaging
OwnerViktor Gruevinventor
Life of this patent
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Abstract
A sensor is provided that combines monolithically-integrated pixelated aluminum nanowires with vertically stacked photodetectors. The aluminum nanowires are arranged as a collection of 2-by-2 pixels, or super-pixels. Each super-pixel includes nanowires at four different orientations, offset by 45°. Thus, the optical field is sampled with 0°, 45°, 90°, and 135° linear polarization filters. Due to the spatial subsampling, interpolation may be applied to reconstruct the full 0°, 45°, 90°, and 135° arrays.
Claims20
A sensor for measuring polarization and spectral information, said sensor comprising:
- a polarization assembly including a plurality of polarization filters;
- and
- a detection assembly coupled to said polarization assembly, said detection assembly including a plurality of photodetector assemblies, each photodetector assembly including at least two vertically-stacked photodetectors, wherein each of said plurality of photodetector assemblies is adjacent to one of said plurality of polarization filters.
A system for measuring polarization and spectral information, said system comprising:
- a sensor comprising:
- a polarization assembly including a plurality of polarization filters;
- and
- a detection assembly coupled to said polarization assembly, said detection assembly including a plurality of photodetector assemblies, each photodetector assembly including at least two vertically-stacked photodetectors, wherein each of said plurality of photodetector assemblies is adjacent to one of said plurality of polarization filters;
- and
- a computing device communicatively coupled to said sensor, wherein said computing device is programmed to receive polarization and spectral information from said sensor.
A method for measuring polarization and spectral information, said method comprising:
- receiving data from a sensor, wherein the sensor includes a polarization assembly including a plurality of polarization filters and a detection assembly coupled to the polarization assembly, the detection assembly including a plurality of photodetector assemblies, each photodetector assembly including at least two vertically-stacked photodetectors, wherein each of the plurality of photodetector assemblies is adjacent to one of the plurality of polarization filters;
- and
- generating an image having polarization and spectral information based on the received data.
Dependencies are inferred from the claim text.