High-performance 3MP CMOS image sensor achieving 150dB HDR

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High dynamic range imaging delivered by ON Semiconductor "AR0341AT"

Systems utilizing image sensors require not only high resolution but also the ability to acquire stable images even in challenging imaging environments such as backlighting and nighttime conditions.
ON Semiconductor's AR0341AT is a 3-megapixel CMOS image sensor with 1920 x 1536 pixels.

Originally developed for automotive applications such as ADAS and electronic mirrors, this image sensor boasts a wealth of features including HDR performance up to 150dB, LED flicker suppression (LFM), Smart ROI, and Dual Output Datapath, making it suitable for industrial and surveillance applications as well.

Excellent visibility with up to 150dB HDR.

The most notable feature of the AR0341AT is its extremely high dynamic range.
It employs a unique 2.1µm BSI Super Exposure pixel, enabling HDR imaging with a maximum of 120dB in Super Exposure mode and a maximum of 150dB in Super Exposure + T2 mode. Furthermore, since HDR image generation can be performed within the sensor, it also contributes to reducing the processing load on the host system.
As a result,
Tunnel entrances and exits
• Outdoor environments with strong backlighting
Scenes that combine indoor and outdoor environments
• Inspection environments with strong lighting or reflections
This allows for stable image acquisition even in high-contrast environments.

Supports LED flicker suppression (LFM).

In recent years, with the widespread adoption of LED lighting, addressing flicker has become crucial for surveillance cameras and industrial equipment.
The AR0341AT achieves LED flicker suppression (LFM) simultaneously with HDR imaging, supporting stable image acquisition even under LED traffic lights and LED lighting. The imaging technology cultivated for the automotive market can also be applied to factory equipment and outdoor monitoring systems.

Efficient system design with Smart ROI

The AR0341AT supports up to eight Smart ROIs (Regions of Interest).
Because it can acquire the entire image while selectively outputting only the necessary parts,
- Reduction of transfer bandwidth
- Reduce the load on the ISP and SoC.
- Extraction of areas to be analyzed by AI
This allows you to do it efficiently.

For example, it is suitable for applications such as high-speed analysis of specific areas of an object using inspection equipment, or focused monitoring of only people or vehicles using surveillance cameras.

New system configuration with Dual Output Datapath

The AR0341AT features Dual Output Datapath, allowing simultaneous output of two different video streams from a single image. By utilizing MIPI Virtual Channel, it can simultaneously output full-resolution images and ROI images, or HDR images and images for analysis.
The development guide refers to this feature as "Vision + Viewing,"
Videos for people to watch
Videos used by AI and image processing
A major feature is that it can achieve all of this with a single sensor.

High reliability delivered by automotive quality

The AR0341AT is a product developed for the automotive market.
• AEC-Q100 Grade 2 compliant
- Supports ASIL-C development process
- Supports ASIL-B hardware metrics
• Real-time fault detection function
• Wide operating temperature range
It boasts high reliability, as described above.
Therefore, it is also suitable for industrial equipment and infrastructure monitoring applications that require stable operation over long periods.

Assumed application

Although the AR0341AT is designed for automotive applications, its features allow it to be used in a variety of other applications.

Machine vision and visual inspection
・ Inspection under LED lighting
- Metal surface inspection involving strong reflection
• High-speed image processing utilizing ROI

Intelligent surveillance camera
・ High-definition surveillance in backlit environments
- ROI output for AI analysis
- Stable imaging regardless of day or night

ITS・Traffic monitoring
- Imaging LED traffic lights
• Vehicle monitoring system
・Outdoor monitoring use

Robotics and Industrial Equipment
• Autonomous mobile robots
・Logistics equipment
・Vision systems for AGVs/AMRs

Summary

ON Semiconductor's AR0341AT is,
・Up to 150dB HDR
- LED flicker suppression (LFM)
Smart ROI
Dual Output DataPath
・Supports 60fps
• High reliability backed by automotive quality standards
This is a 3-megapixel CMOS image sensor that combines the following features. It is not just a sensor for automotive applications, but also a strong option for industrial and surveillance applications where you want to "reliably capture images even in harsh lighting environments" or "have one camera perform multiple roles."

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