A group of Nigerian researchers has received international recognition after obtaining intellectual property protection in the United Kingdom for a medical imaging technology developed to enhance the precision and reliability of optical diagnostic systems.

The innovation, called the Self-Calibrating Optical Imaging Photodetector, was officially registered by the UK Intellectual Property Office (UKIPO) under UK Design No. 6482043 on November 18, 2025.

Registered under International Design Class 24, which covers medical and laboratory equipment, the device combines sensing, imaging and automated calibration within a single integrated platform.

The technology is the product of a multidisciplinary collaboration involving Professor Okechukwu Felix Erondu, Onuh Matthew Ijiga, Professor Terver Sombo and Dr. Peverga Rex Jubu. The registration represents another milestone for Nigerian-led scientific innovation while underscoring the growing contribution of African researchers to medical technology, optical engineering and laboratory instrumentation.

Optical imaging systems play a critical role in hospitals, universities and research laboratories, where they are used for medical diagnosis and scientific investigations. However, maintaining precise calibration has remained a persistent challenge because even slight alignment errors can reduce image quality, affect measurement accuracy and produce inconsistent outcomes.

Existing imaging systems frequently depend on repeated manual calibration or external alignment equipment, processes that can interrupt workflow and increase the likelihood of human error.

The newly registered photodetector is designed to overcome these challenges through an integrated self-calibration mechanism that continuously maintains alignment during operation. The system also features a built-in ALIGN indicator, enabling users to monitor and optimise optical alignment in real time without the need for repeated manual adjustments.

According to the research team, the device integrates an elevated optical sensing unit, a centrally positioned display and a multifunction control console into one platform, allowing operators to simultaneously monitor imaging and calibration. They explained that the design reduces optical drift, improves measurement repeatability and increases operational efficiency in both clinical and laboratory environments.

Potential applications for the technology include biomedical imaging, fluorescence diagnostics, microscopy, laboratory photometry and other disciplines that require highly precise optical measurements.

The project was led by Professor Okechukwu Felix Erondu, Professor of Radiography at Gregory University, Uturu, and Founder and Chief Medical Director of Image Diagnostics, Port Harcourt. He said recurring challenges in diagnostic imaging inspired the development.

“My experience in diagnostic imaging has consistently shown that calibration drift and alignment inconsistencies compromise image reliability. This device integrates calibration directly into the imaging structure, reducing operator error and strengthening diagnostic confidence,” he said.

Erondu’s expertise in computed tomography, ultrasound imaging, radiation protection and medical physics contributed significantly to the device’s clinical capabilities.

Another member of the team, Onuh Matthew Ijiga, an Applied Physics researcher in the Department of Physics at Joseph Sarwuan Tarka University, Makurdi, brought specialist knowledge in semiconductor physics, environmental photonics and optical characterisation to the project.

Ijiga said advances in materials science were instrumental in enhancing the photo detector’s sensitivity and signal stability.

“Understanding semiconductor band structure and charge-carrier dynamics in nanomaterials informed how we approached optical sensitivity and signal stability. Precision photodetection depends on controlled light-matter interaction, and that physics guided the structural orientation of the device,” he said.

The research also benefited from the expertise of Professor Terver Sombo, whose background includes industrial physics, radiation physics and environmental measurement systems. Dr. Peverga Rex Jubu, a specialist in materials physics and nano-optoelectronics, contributed computational simulations that optimized the instrument’s optical geometry and photon collection efficiency.

The researchers noted that the innovation extends beyond its structural configuration by embedding calibration directly into the imaging architecture rather than treating it as an external process. They believe this design could significantly improve the reliability of imaging systems deployed across healthcare, scientific research and industrial applications.

Beyond protecting the device’s distinctive structural and visual configuration, the UK registration also reflects growing international recognition of African scientific innovation.

The achievement further highlights the expanding role of Nigerian researchers in global scientific advancement despite ongoing challenges related to funding, infrastructure and commercialisation. Experts say collaborative, interdisciplinary research efforts such as this demonstrate the ability of African scientists to develop technologies with practical applications and global relevance.

With healthcare providers and research institutions increasingly seeking automated, high-precision imaging technologies, innovations that improve calibration accuracy and measurement reliability are expected to become increasingly important.

For the four Nigerian scientists, the UK intellectual property registration marks a significant achievement in protecting home-grown innovation while contributing to continued progress in medical imaging and optical instrumentation with international impact.