Sony introduces IMX900 stacked CIS

Sony Semiconductor Solutions to Launch 1/3-Type-Lens-Compatible, 3.2-Effective-Megapixel Stacked CMOS Image Sensor with Global Shutter for Industrial Use Featuring Highest Resolution in This Class in the Industry

Atsugi, Japan — Sony Semiconductor Solutions Corporation (SSS) today announced the upcoming release of the IMX900, a 1/3-type-lens-compatible, 3.2-effective-megapixel stacked CMOS image sensor with a global shutter for industrial use that boasts the highest resolution in its class.
The new sensor product employs an original pixel structure to dramatically improve light condensing efficiency and near infrared sensitivity compared to conventional products, enabling miniaturization of pixels while maintaining the key characteristics required of industrial image sensors. This design achieves the industry’s highest resolution of 3.2 effective megapixels for a 1/3.1-type, global shutter system which fits in the S-mount (M12), the mount widely used in compact industrial cameras and built-in vision cameras.

The new product will contribute to the streamlining of industrial tasks in numerous ways, by serving in applications such as code reading in the logistics market and assisting in automating manufacturing processes using picking robot applications on production lines, thereby helping to resolve issues in industrial applications.

With demand for automation and manpower savings on the rise in every industry, SSS’s original Pregius S™ global shutter technology contributes to improved image recognition by enabling high-speed, high-precision, motion distortion-free imaging in a compact design. The new sensor utilizes a unique pixel structure developed based on Pregius S, moving the memory unit that was previously located on the same substrate as the photodiode to a separate signal processing circuit area. This new design makes it possible to enlarge the photodiode area, enabling pixel miniaturization (2.25 μm) while maintaining a high saturation signal volume, successfully delivering a higher pixel count of approximately 3.2 effective megapixels for a 1/3.1-type sensor.

Moving the memory unit to the signal processing circuit area has also increased the aperture ratio, bringing significant improvements to both incident light angle dependency and quantum efficiency. These features enable a much greater level of flexibility in the lens design for the cameras which employ this sensor. Additionally, a thicker photodiode area enhances the near infrared wavelength (850 nm) sensitivity, and nearly doubles the quantum efficiency compared to conventional products.

This compact, 1/3.1-type product is available in a package size that fits in the S-mount (M12), the versatile mount type used in industrial applications. It can be used in a wide range of applications where more compact, higher performance product designs are desired, such as in compact cameras for barcode readers in the logistics market, picking robot cameras on production lines, and the automated guided vehicles (AGVs) and autonomous mobile robots (AMRs) that handle transportation tasks for workers.

Main Features

•  Industry’s highest resolution for an image sensor with a global shutter compatible with a 1/3-type lens, at approximately 3.2 effective megapixels
•  Vastly improved incident light angle dependency lend greater flexibility to lens design
• Delivers approximately double the quantum performance of conventional products in the near infrared wavelength
• Includes on-chip features for greater convenience in reducing post-production image processing load
• High-speed, 113 fps imaging

Cross-section of pixel structure
Product using conventional Pregius S technology (left) and the IMX900 using the new pixel structure (right)

Example of effects due to improved incident light angle dependency

Imaging comparison using near-infrared lighting (850 nm)
(Comparison in 2.25 μm pixel equivalent using conventional Pregius structure)

Usage example of Fast Auto Exposure function