Prism-echelette modulated spectral video imaging system

The spectral video imaging system using prism-stepped mirror modulation utilizes image slicing and a dispersive prism combined with a stepped mirror array for three-dimensional space-spectrum modulation, solving the problems of insufficient light throughput and high reconstruction complexity in existing technologies, and achieving high-quality and flexible spectral video imaging.

CN117109741BActive Publication Date: 2026-05-01NANJING UNIV
2 Cites 0 Cited by

Patent Information

Application Number
CN202210535172.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-05-17
Publication Date
2026-05-01
Estimated Expiration
2042-05-17

AI Technical Summary

Technical Problem

Existing spectral video imaging technologies suffer from mutual constraints across the three dimensions of time, space, and spectrum, resulting in low imaging quality, insufficient light throughput, high reconstruction complexity, and difficulty in applying them to demanding scenarios.

Method used

The spectral video imaging system employing prism-stepped mirror modulation uses an image slicing device, a dispersive prism, a bar-shaped periodic mask, and a stepped mirror array to perform three-dimensional space-spectrum modulation, capturing spectral information at two different scales, and reconstructing a complete space-spectrum data cube through decoupling and coupling acquisition modules.

Benefits of technology

It increases light throughput, reduces the spatiotemporal complexity of reconstruction algorithms, enhances spectral reconstruction accuracy, and provides flexible selection of spectral bands, making it suitable for high-speed scene imaging.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a prism-ladder mirror modulated spectral video imaging system. The system comprises a scene capturing module, an optical collimation module, a three-dimensional space-spectrum modulation module, a decoupling acquisition module, a coupling acquisition module and a fusion reconstruction module. After the scene information captured by the scene capturing module passes through the optical collimation module, the information is input into the three-dimensional space-spectrum modulation module, and after image slice dispersion, dispersion, spectrum band selection and light vector modulation, a spectral image is formed, in which the three-dimensional spectral data of the scene is decoupled and two-dimensionally expanded. Then, the data is sampled and input into the decoupling acquisition module, and the unsampled data is acquired by the coupling acquisition module. The spectral information of different scales acquired by the two acquisition modules is reconstructed into a complete space-spectrum data cube through the fusion reconstruction module. The application utilizes the reflection and transmission of the micromirror array to modulate the three-dimensional space-spectrum data, reduces the information loss during data modulation, and can significantly improve the luminous flux and reconstruction accuracy of the system.
Need to check novelty before this filing date? Find Prior Art