A method and system for real-time wide-field color imaging using scattered light

By combining hybrid coherent lasers and digital micromirror devices, the problem of limited imaging effect in scattering media is solved, real-time wide-field color imaging is achieved, the wavefront distortion of scattering media is overcome, and the imaging quality is improved.

CN118444480BActive Publication Date: 2025-10-14FUZHOU UNIV
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Patent Information

Application Number
CN202410560145.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-08
Publication Date
2025-10-14
Estimated Expiration
2044-05-08

AI Technical Summary

Technical Problem

Existing scattering medium imaging methods have limited imaging effects in highly scattering media and cannot effectively utilize scattered light to achieve real-time wide-field color imaging.

Method used

By mixing coherent lasers in different visible light bands to obtain multi-wavelength mixed parallel light, the scattered light is separately shaped in the three RGB channels using a feedback wavefront shaping system. The optimal amplitude compensation map is loaded on the digital micromirror device, the sample position is adjusted, and the image information of the three RGB channels is obtained and fused to achieve real-time wide-field color imaging of scattered light.

Benefits of technology

Real-time wide-field color imaging is achieved when the scattering medium remains unchanged or changes slightly, overcoming the problem of wavefront distortion in the scattering medium, improving the imaging quality and obtaining color imaging effects.

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Abstract

The present application relates to a kind of real-time wide field of view color imaging method and system using scattered light.The method: different visible light band coherent laser is uniformly mixed to obtain multi-wavelength mixed parallel light;Scattered light formed after mixed parallel light passes through scattering medium is simultaneously carried out RGB three channels individual feedback type wavefront shaping, complete the pre-correction of mixed parallel light after scattering medium;The sample to be imaged is placed between mixed parallel light output and scattering medium, according to the imaging field of view range adjustment sample to be imaged position, obtain the sample image of RGB three channels and carry out fusion to obtain the color image of sample to be imaged, realize the real-time wide field of view color imaging of scattered light.The present application only needs to correct scattered light in advance, realizes the imaging of any transparent sample in the imaging range under the condition that scattering medium does not change or slightly changes, has real-time;While introducing optical memory effect, imaging field of view is no longer limited to optical axis, can realize wide field of view imaging.
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