Sony to release two types of stacked event-based vision sensors with the industry's smallest*1 4.86 micrometre pixel size for detecting subject changes only

Delivering high-speed, high-precision data acquisition to improve industrial equipment productivity

Atsugi, Japan - Sony Semiconductor Solutions Corporation ( Sony ) today announced the upcoming release of two types of stacked event-based vision sensors. These sensors designed for industrial equipment are capable of detecting only subject changes, and achieve the industry's smallest*1 pixel size of 4.86 m.

Event-based vision sensors asynchronously detect luminance changes for each pixel and output the changed data only, combining it with information on pixel position (xy coordinates) and time, thereby enabling high-speed, low latency data output.

The two new sensors employ stacking technology leveraging Sony's proprietary Cu-Cu connection*2 to achieve the industry's smallest*1 pixel size of 4.86 m. In addition to operating with low power consumption and delivering high-speed, low-latency, high-temporal-resolution data output, the new sensors also feature a surprisingly high resolution for their small size. All of these advantages combine to ensure immediate detection of moving subjects in diverse environments and situations.

These two sensors were made possible through a collaboration between Sony and Prophesee, by combining Sony's CMOS image sensor technology with Prophesee's unique event-based vision sensing technology. This enables high-speed, high-precision data acquisition and contributes to improve the productivity of the industrial equipment.

*1: Among stacked event-based vision sensors. According to Sony research (as of announcement on September 9, 2021).

*2: Technology that provides electrical continuity via connected Cu (copper) pads when stacking the pixel section (top chip) and logic circuits (bottom chip). Compared with through-silicon via (TSV) wiring, where the connection is achieved by electrodes intruded around the circumference of the pixel area, this method gives more freedom in design, improves productivity, allows for a more compact size, and increases performance.

LINK:	https://www.sony.co.uk/presscentre/news/sony-to-release-two-types-of-s...
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