In-cabin video sensors excel with high quantum efficiency

In-cabin video sensors excel with high quantum efficiency

New Products |
By Christoph Hammerschmidt

Omnivision has added two new models to its line of infrared video sensors for automotive applications. With a pixel size of just 2.2 µm, both sensors feature industry-leading Nyxel near-infrared (NIR) quantum efficiency (QE) at 36%, a significant increase in modulation transfer function (MTF) over the previous 3.0 µm FSI GS pixel design, and extremely low power consumption.

The two new models are the OX02C1S, a 2.5-megapixel (MP) RGB-IR BSI global shutter (GS) sensor for in-cabin driver and occupant monitoring systems (DMS and OMS); and the OX01H1B, a 1.5MP mono (IR) GS sensor for driver monitoring systems (DMS).

Both OX02C1S and OX01H1B are small-size automotive-grade sensors with world-leading QE for excellent low-light performance. Both utilize OmniPixel4-GS technology which enables simultaneous image detection in all pixels to accurately reproduce rapid motion without any deformation. They have integrated ASIL-B and cybersecurity that meet the latest industry standards. Both come in an Omnivision stacked a-CSP package, allowing for higher-performance image sensors in tighter camera spaces, and are also available in a reconstructed wafer option for designers that want the flexibility to customize their own package. The OX02C1S sensor features 2.5MP resolution in a 1/3.55-inch optical format, while the OX01H1B features 1.5MP resolution in a 1/4.51-inch optical format.

According to semiconductor analyst Colin Barnden, the CMOS image sensor market for automotive DMS and OMS can be divided into three distinct segments: digital cockpit, automated driving and NCAP/GSR (New Car Assessment Program/General Safety Regulation) compliance. Performance requirements differ significantly for each. “Designers must also consider sensor location, including rear-view mirror, steering column and center console. With the new OX02C1S and OX01H1B sensors, and existing OX05B1S, Omnivision provides automakers with solutions for the total market,” Barnden added.

The OX02C1S is essentially positioned a more economical and lower resolution (2.5MP) version of the OX05B1S for DMS and OMS, while the OX01H1B is offered as a flexible 1.5MP solution for DMS that offers the ideal price/performance for OEMs that need flexibility to place the DMS camera into different locations within the vehicle based on their unique interior design.

Samples of the new GS sensors are available now. They will be in mass production in 2024.


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