Thursday, November 03, 2016

Leti and Pyxalis Develop Low Noise Image Sensor Readout

ElectronicsWeekly: CEA-Leti and PYXALIS announce a new technology that lowers readout noise for image sensors down to 0.5e- and dramatically improves low-light image sensing capabilities.

The new technology, called Owly-eyed, is based on a patented electrical architecture of the pixel readout that can be integrated in image sensors. It has been adapted for PYXALIS, which will offer it in its next-generation image sensors.

In the Owly-eyed technology demonstrator, a sub-0.5e− rms temporal read noise has been achieved on a VGA format CMOS image sensor implemented in a standard CMOS process. The low-noise performance is achieved exclusively through circuit optimization without any process refinements.

In this common lab with PYXALIS, we’ve developed a low-noise image technology that provides state-of-the-art advanced imaging for next-generation applications in a wide range of markets and industries,” said Marie Semeria, Leti’s CEO. “This CMOS-based device, which can be adapted for multiple uses, is another strong example of how Leti’s broad technology innovations make our partners more competitive in their industries.

Leti’s Owly-eyed technology is a major improvement in low-noise imaging,” said PYXALIS CEO Philippe Rommeveaux. “Combined with our capacity to offer advanced sensors with high digital integration and high dynamic range, it will allow us to establish a new performance standard in image sensors that address the growing demand for low-light applications in the surveillance, biomedical, science, defense and aerospace markets.


  1. Cool. So, where is the photon counting histogram that demonstrates photoelectron counting if the read noise is below 0.5e- rms? Easy enough to generate and easy enough to verify the read noise by just looking at the PCH.

    1. This work makes certainly reference to this paper :
      where the readnoise was 0.5 electrons, so not "sub-electron" enough to see peaks in a low light histogram.


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