Polarization imager with high dynamic range
US11546539B2 · kind B2 · utility
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Key dates
| Filing date | Sep 27, 2019 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Jun 6, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8037
Abstract
A polarization imager is provided that includes a plurality of CMOS photodetectors and a plurality of polarization filters. Each of the plurality of CMOS photodetectors has a photodiode that is configured to operate in forward bias mode. Further, each of the plurality of polarization filters is monolithically integrated with a corresponding one of the plurality of CMOS photodetectors. Each of the plurality of photodiodes exhibits a logarithmic response to a flux of incident photons. The polarization imager achieves a dynamic range of at least 100 decibels with a signal-to-noise ratio of at least 60 decibels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.