Patent · US Active

Single chip spectral polarization imaging sensor

US12130180B2 · kind B2 · utility

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1References
20Claims
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Key dates

Filing dateAug 15, 2022
Grant dateOct 29, 2024
Priority date—
Expiry dateNov 18, 2042

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01J2003/2826
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An image sensor capable of recording both spectral and polarization properties of light using a single chip device includes an at least 2048 by 2048 array of superpixels. Each superpixel includes an array of spectral pixels, and an adjacent array of polarization pixels. Each spectral pixel includes a spectral filter and a stack of photodiodes, where each photodiode has a different quantum efficiency and is, therefore, sensitive to a different wavelength of light passed by the spectral filter. Each polarization pixel includes a polarization filter and a stack of photodiodes, similar to the spectral pixel photodiode stacks.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.