Tuesday, September 20, 2016

Omnivision Launches VGA GS Sensor

PRNewswire: OmniVision announces the latest addition to its portfolio of automotive image sensors, the 3um global shutter pixel-based OV7261 is aimed to gesture control and driver monitoring applications such as driver drowsiness and distraction detection.

"We project that the driver state monitoring system market will grow significantly through 2020, which underscores the automotive industry's drive to implement advanced camera applications not only on high-end luxury vehicles, but also on mainstream automobiles across multiple markets," said Jeffrey Morin, senior automotive marketing manager for North America at OmniVision. "The OV7261 aims to drive down the cost, power, and space requirements of implementing vision-based driver monitoring systems without sacrificing image quality or product reliability."

8 comments:

  1. 350e/sec of dark current is huge.

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  2. - 350 e-/sec "at 50 deg C", so about 100 e-/sec at room temp, which still large
    - Global shutter = fast exposure time, so dark current doesn't matter too much. The sensor has a noise of 16e-'s, so a couple of electrons don't matter.

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    1. Not true. They should used FD as storage node. In this case, the dark current will be accumulated during the readout time, say, 20ms.

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    2. 20 ms? with 100 fps and some of that being integration time and eventually signal processing, I hope it's more like ~1 ms!? That'd give less than 0.35 e- leakage and therefore negligible noise penalty. Even at 10 ms read (1/100fps) you'd only get 3.5e- leakage resulting in 1.9e-rms - being therefore indeed insignificant compared to the 16e-rms.

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  3. any idea on shutter efficiency?

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  4. 16e- noise seems a lot?
    I though CMOS sensor are having lower noise nowdays?

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    1. Looking at the other numbers, I wouldn't be surprised if they stored the signal on the FD after exposure and don't do CDS

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  5. Hello,
    "The sensor has a noise of 16e-'s"

    Where did you get this data?
    Is it from measurements?
    Or derived from OVT data?

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