Chinese researchers develop optical setup that merges several infrared perspectives onto one compact detector

Scientists at the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences have unveiled an optical configuration capable of channeling light from multiple infrared sub‑fields onto a single, small‑format detector. This advance offers a route to capture a wider field of view without the need for large detector arrays, potentially trimming the size, weight and cost of infrared imaging hardware.

The heart of the system is a suite of precision optics that reshape and steer incoming infrared radiation so that each sub‑field is imaged onto a separate region of the same detector surface. By analysing the geometry of the resulting light spots, which differ according to their source field, the device can separate the contributions of each sub‑field during post‑processing.

Infrared sensors play a vital role in domains ranging from night‑vision and environmental monitoring to aerospace and industrial inspection. Traditional solutions depend on extensive detector arrays to span wide angles, a choice that inflates manufacturing costs and power draw. Merging several views onto a single detector could make high‑performance infrared imaging more attainable for portable and budget‑constrained platforms.

The concept expands on earlier multiplexing schemes that often relied on moving components or time‑sequenced scanning to sample different parts of a scene. By employing a static optical mapping, the new design eliminates mechanical complexity and can run continuously, preserving frame rate while still delivering spatially resolved data. This marks a shift from purely electronic read‑out methods toward a hybrid optical‑electronic processing approach.

Going forward, the team intends to integrate the optical mapper with current infrared camera architectures and test its performance under real‑world conditions such as fluctuating temperatures and dynamic scenes. Should the trials prove successful, the approach could be adapted to other spectral regions, paving the way for compact multispectral sensors and boosting capabilities in fields that rely on precise, low‑cost infrared detection.