20MP CMOS Image Sensor for "Mastering" High Resolution

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ON Seminar "AR2020" enables Smart ROI and HDR imaging.

In the image sensor market, where resolution is constantly increasing, the key theme in system design in recent years has shifted from simply "the number of pixels" to how efficiently the vast amount of acquired pixel information can be handled.
ON Semiconductor's AR2020 is a 1/1.8-inch BSI CMOS image sensor that achieves approximately 20 megapixels with a resolution of 5120 x 3840, while also featuringfunctionssuch asSmart ROIandHDR/eDR.

Sensor design based on a high resolution of approximately 20MP.

The AR2020 is a high-resolution CMOS image sensor designed primarily for industrial equipment, monitoring, and measurement applications.
By acquiring high-resolution images of approximately 20MP,
- Capture a wide field of view in one shot.
Visualization of minute objects and structures
- Operation based on the premise of trimming and analysis
We can meet such requirements.

On the other hand, with increasing resolution Increased data volume and processing load This is a major challenge for system designers.
AR2020 was developed with these challenges in mind. Even the question of "how to use" high pixel counts.Considereddesign Its distinguishing feature is that it is done in this way.

Smart ROI – Efficiently extract only the necessary areas.

The Smart ROI(Region of Interest) feature included in the AR2020 is an important function for practically utilizing high-resolution sensors.
By using Smart ROI, it is possible to selectively read only the area of interest while maintaining a high resolution of 20MP for the entire sensor.

The benefits of Smart ROI

- Reduction of data transfer volume and processing load
This reduces the load on the ISP and SoC, contributing to improved overall system efficiency.
・ Achieving both high resolution and real-time performance
By focusing on the necessary information, it can also handle applications that require high-speed response.
・ Image analysisAIHigh compatibility with processing
This configuration is ideal for object detection, tracking, and region-of-interest analysis.

For example, a major advantage is that a single sensor can implement a configuration that allows for "high-resolution monitoring of a wide area while performing detailed analysis only on critical areas."

HDR / eDR – Flexible handling of scenes with large differences in brightness.

Line-Interleaved HDR（LI-HDR）

AR2020 is Line-Interleaved HDR(LI-HDR) It supports this and achieves a dynamic range of up to approximately 100dB.
・Backlit environment
- Scenes that combine outdoor and indoor environments
• Imaging conditions where strong reflections or shadows are present
Even in such situations, stable imaging is possible while suppressing overexposure and underexposure.

eDR（Enhanced Dynamic Range）

Furthermore, it also supports eDR(Enhanced Dynamic Range) mode, which allows you to extend the dynamic range using a different approach thanLI-HDR, depending on the application and system configuration.
One of the features of AR2020 is its ability to flexibly optimize the balance between image quality, processing load, and frame configuration by switching between LI-HDR and eDR.

Available in two versions: RGB color and monochrome.

The AR2020 is available in two color filter specifications: an RGB color version and a monochrome version. Both models share key functions such as Smart ROI, HDR/eDR, and MIPI Virtual Channel, allowing users to select the color filter specification according to their application.

Since you can select between RGB and monochrome on the same platform, it's easy to develop derivative models by reusing existing development assets.

Flexible output via MIPI CSI-2 + Virtual Channel

AR2020 is MIPI CSI-2interface We adopted, Virtual Channel(VC)output It supports this.
As a result,
- Simultaneous output of full-frame image and ROI image
• Efficient handling of HDR frames
Flexible stream control on the ISP side
This enables the creation of systems that maximize the potential of Smart ROI and HDR features.

Assumed application

• Machine vision and visual inspection
High-resolution detection of minute defects, high-speed inspection utilizing ROI, and stable imaging using HDR.
・ Smart monitoring and security
Wide-area, high-definition monitoring, ROI analysis, and compatibility with outdoor environments with large differences in brightness.
・ Measurement, visualization, and research applications
Applications requiring high-resolution data acquisition, detailed analysis of specific regions, and stable reproducibility.

Summary

Onsemi AR2020 teeth,
• High resolution of approximately 20MP
- Efficient pixel utilization through Smart ROI
• High environmental adaptability thanks to LI-HDR / eDR
- Flexible output configuration utilizing MIPI VC
・ RGBColor/Monochrome2Lineup
It possesses the following characteristics: To "master high resolution at the implementation level"CMOSImage sensor is.
ONSemi offers a variety of other models in addition to the AR2020 that we introduced here.

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