Devices and methods for obtaining three-dimensional shape information using polarization and time-of-flight detection pixel cells

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United States of America Patent

PATENT NO 11871132
APP PUB NO 20210352234A1
SERIAL NO

16870687

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Abstract

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In some embodiments, an imaging system is provided. The imaging system comprises an image sensor, a light source, control circuitry, and function logic. The image sensor comprises a pixel array that includes a plurality of polarization pixel cells and a plurality of time-of-flight pixel cells. The light source is configured to emit light pulses to an object. The control circuitry is coupled to the light source and the pixel array, and is configured to synchronize a timing of the emission of the light pulses with sensing of photons reflected from the object by the plurality of time-of-flight pixel cells to generate depth information. The function logic is configured to determine a set of ambiguous surface normals using signals generated by the plurality of polarization pixel cells, and to disambiguate the set of ambiguous surface normals using the depth information to generate a three-dimensional shape image.

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Patent Owner(s)

  • OMNIVISION TECHNOLOGIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bonakdar, Alireza San Jose, US 19 52
Fowler, Boyd Sunnyvale, US 50 1269
Mann, Richard Santa Clara, US 41 1256
Padmanabhan, Badrinath San Jose, US 8 12

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