Single-pixel self-referenced common-path holography method

Through the single-pixel pattern self-referenced common-path holography method, the modulation basis superposition interference phase shift or off-axis grating is used to generate the coding pattern, which solves the imaging resolution and field of view limitations of the single-pixel imaging system, and realizes high-resolution and full-field wavefront imaging, which is suitable for multi-band applications.

CN119739018BActive Publication Date: 2025-09-26TAIYUAN UNIVERSITY OF TECHNOLOGY
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Patent Information

Application Number
CN202510077461.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2024-09-02
Filing Date
2025-01-17
Publication Date
2025-09-26
Estimated Expiration
2045-01-17

AI Technical Summary

Technical Problem

Existing single-pixel imaging systems, when combined with interferometry, have problems such as high device complexity, poor anti-interference capability, waste of phased array pixel resources, reduced imaging resolution, and low light utilization efficiency, especially in common-path interferometry, where the imaging field of view is limited.

Method used

A single-pixel self-referenced common-path holographic method is adopted, and a coding pattern is generated by superimposing an interference phase-shift pattern or an off-axis grating through a single-pixel modulation basis. Reference light is dynamically introduced to fully utilize the pixel resources of the phased array to achieve high-resolution wavefront complex amplitude and full-field imaging.

Benefits of technology

It achieves the simultaneous consideration of imaging resolution and imaging field of view in a single-pixel imaging system, improves light utilization, and expands applications to a wider band. It is suitable for quantitative phase microscopy, adaptive optics, imaging through scattering media, and quantum light field measurement.

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Abstract

The present invention belongs to the intersection of spatial wavefront measurement and single-pixel imaging. The current single-pixel common-path wavefront imaging has the problem of not being able to fully utilize the pixels of the phased array, resulting in a decrease in wavefront imaging resolution or a limited imaging field of view, and thus the wavefront imaging performance is not high. The present invention provides a single-pixel mode self-referenced common-path holographic method, which uses a single-pixel modulation basis to superimpose interference on a necessary phase shift pattern or an off-axis grating to generate a coding pattern, samples the wavefront of an unknown light field, dynamically introduces reference light, and fully utilizes the pixel resources of the phased array, while taking into account both imaging resolution and imaging field of view, and has a higher light utilization rate. It can be expanded to a wider band, especially for wavefront complex amplitude measurement when array detectors are expensive or do not yet exist, and has broad application prospects in the fields of quantitative phase microscopy, adaptive optics, imaging through scattering media, and quantum light field measurement.
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