Through a unique square-law relay projection mechanism and a nonline-of-sight light collection strategy, it subverted the traditional optical imaging method and achieved a perfect fusion of microscopy and telescope functions
A team from the School of Science at the National University of Defense Technology (NUDT) has made an important breakthrough in the field of optical computational imaging, and the researchers have successfully developed a new type of optical imaging method called "Relay Projection Microscopic Telescopy" (rPMT), which is expected to solve the bottleneck problem that has long limited the development of optical imaging technology.
The research result, titled "Relay-projection microscopic telescopy", was published in the top international journal Light: Science & Applications (impact factor 20.6).
With current technological approaches, how to simultaneously improve the spatial resolution, imaging distance and depth of field of optical imaging systems is a recognized bottleneck in the field of optical imaging.There is an increasing need to improve these performance parameters in biomedical research, semiconductor manufacturing, and remote diagnostics, but existing solutions are often limited to a compromise between the three parameters and cannot achieve simultaneous improvement.To address this challenge, the researchers propose the rPMT method for the first time, which subverts the traditional optical imaging approach and realizes the perfect integration of microscopy and telescope functions through a unique square-law relay projection mechanism and non-line-of-sight light collection strategy.
The rPMT method can realize micron-level high-resolution dynamic microscopic video imaging in the distance range of centimeters to hundreds of meters by using only simple equipment, and it demonstrates the long-distance, high-resolution, large field of view, and high-dynamic optical imaging capability beyond the diffraction limit of the camera lens and the limit of the depth of field, and the resolution and depth of field range have been enhanced by tens of times, which makes it possible to provide the micro-imaging for the ultra-long working distance, the ultra-large depth of field, as well as the remote micro-imaging for the long-distance micro-imaging.It provides a new solution for ultra-long working distance, ultra-large depth of field microscopic imaging and long-distance micro-scale target detection applications.
rPMT does not require the use of fluorescent reagents, and also circumvents the complex processes of wavefront modulation, synthetic aperture, and stacked-layer scanning required by other super-resolution imaging techniques, and has better practicality and real-time performance.
National University of Defense Technology (NUDT) is the first author of this research result, and Wenjun Yi, a lecturer in the College of Science, is the first author and corresponding author of the paper, Shuyue Zhu, a master's student, is the co-first author of the paper, and Jianjian Li, a researcher, is the co-corresponding author.
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