Sony has developed a tiny image sensor measuring just 1 mm square that could help manufacturers build thinner medical endoscopes without sacrificing image clarity. The new sensor combines approximately 0.51 megapixels of effective resolution with digital image transmission over a 5-meter cable and video capture at up to 60 frames per second.

Announced by Sony Semiconductor Solutions on October 21, 2026, the IMX742 is designed for single-use medical endoscopes, including instruments used to examine the airways and urinary tract. Sony plans to begin shipping samples in November 2026.

The development tackles a practical engineering challenge in medical imaging: fitting the electronics needed to capture and transmit useful images into an extremely small space. As endoscope manufacturers work on thinner instruments, reducing the size of the camera components becomes increasingly important.

A 1 mm sensor with digital output

The IMX742 is a back-illuminated CMOS image sensor with a chip measuring 1.00 × 1.00 mm. It features a 720 × 720 effective pixel array, equivalent to approximately 0.51 megapixels, with individual pixel cells measuring 1 micrometer square.

The small footprint is only part of the story. Digital output requires an analog-to-digital converter to be integrated into the sensor, adding circuitry that can make miniaturization more difficult. Sony says it reduced the size of peripheral circuits, including the converter, to preserve space for the pixel array.

The sensor also uses Sony’s proprietary bidirectional communication technology, allowing control signals and video data to travel through the same cable. The design requires just six sensor pins, helping keep the component compact.

These features are intended to support thinner endoscope cameras, including those used in bronchoscopes, which examine the airways, and ureteroscopes, which are used to inspect the urinary tract.

Why the 5-meter digital connection matters

Sony says the IMX742 can transmit digital image data over a 5-meter cable. That distance gives manufacturers more flexibility when arranging the endoscope, its supporting electronics and the external imaging equipment.

The sensor digitizes image signals on the chip rather than relying on analog output. According to Sony, this enables lower-noise imaging in low-light conditions compared with analog output, an important consideration inside the body, where compact endoscopes may use small LED light sources with limited brightness.

The sensor supports frame rates of 30 and 60 fps. At 60 fps, it can deliver smoother video that keeps pace with movement during examinations and procedures.

Sony’s stated 5-meter transmission capability was confirmed in its own evaluation environment using an AWG44 cable. It is a cable transmission specification, not the length of the endoscope itself.

Designed for single-use endoscopes

Single-use endoscopes are designed to be discarded after one patient rather than cleaned and reprocessed for another. They can help healthcare providers reduce the workload associated with reprocessing reusable instruments and support infection-control practices.

However, developing disposable instruments that are both compact and capable of delivering clear images remains a technical challenge. A smaller camera can help manufacturers reduce the diameter of the endoscope’s insertion section, while reliable digital transmission and low-light performance can support visibility during examinations.

Sony has supplied image sensors for reusable endoscopes and says the IMX742 expands its portfolio into single-use applications. The company sees the technology as a way to support smaller endoscope cameras, improved visibility and greater flexibility in system design.

The sensor itself is a component intended for integration into medical equipment, not a finished medical device. Sony explicitly states that it has not been evaluated or approved for medical applications. Its eventual clinical use will depend on the complete devices manufacturers develop around it and the applicable regulatory requirements.

With sample shipments planned for November 2026, the IMX742 gives endoscope makers another option for combining a very small camera sensor with digital video transmission. Its real-world impact will depend on how effectively manufacturers integrate it into finished instruments, but the design illustrates how semiconductor engineering can help address the space constraints of medical imaging.