Image sensor has smallest pixel size

September 03, 2019 //By Julien Happich
image sensor
OmniVision Technologies has released a global shutter (GS) image sensor with what the company claims to be the smallest-ever pixel size, 2.2microns, for a backside-illuminated (BSI) device.

The OG01A sensor combines PureCel Plus-S pixel technology and Nyxel near-infrared (NIR) technology to enable optimal performance and precision along with industry-leading NIR quantum efficiency (QE of 40% at 940nm and 60% at 850nm). This sensor is aimed at a wide range of consumer and industrial applications that need a global shutter to avoid motion blur, along with top NIR performance for low- and no-light conditions.

The OG01A is well-suited to multiple machine-vision applications, including AR/VR headsets, drones, robots, and simultaneous localization and mapping (SLAM), as well as facial authentication in smartphones and other consumer electronics. This technology is also ideal for automotive in-cabin driver state monitoring and eye tracking.

The 1 megapixel OG01A image sensor provides 1280x1024 resolution at 120 frames per second (fps) and 640x480 resolution at 240 fps in a compact 1/5 inch optical format. High shutter efficiency allows for cleaner motion capture and a high dynamic range. The sensor’s low-light sensitivity is also excellent, with significantly lower gain than the typical 3.0 micron pixel size for an improved signal-to-noise ratio.

The sensor’s high modulation transfer function (MTF) enables sharper images with greater contrast and more detail, which is especially important for enhancing decision-making processes in machine vision applications. This industry-leading QE enables the sensor to see farther and better in low- and no-light conditions, which allows designers to use less IR LED light and achieve lower system-level power consumption.

OmniVision - www.ovt.com


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