Chinese Academy of Sciences

Shensheng Han

Zhentao Liu

Jianrong Wu

Zhe Chen

Pengwei Wang

Enrong Li

Shiyu Tan

A broadband super-Rayleigh speckle correlated imaging spectral camera based on dispersion compensation is provided. The imaging scheme comprises, but is not limited to, a pre-compensation scheme, a post-compensation scheme, or a pre-post joint compensation scheme. The device comprises components such as a pre-imaging module, a light filter, a phase modulation module, a relay imaging module, an area array detector, and a computer. According to the present invention, the super-Rayleigh speckle modulation in a broadband is realized by matchining the dispersion characteristic of the pre-imaging module or the relay imaging module with the phase modulation module, which is applied to the correlated imaging spectral camera, so that the imaging quality of the correlated imaging spectral camera at a low signal-to-noise ratio is improved.

Broadband super-Rayleigh speckle correlated imaging spectral camera based on dispersion compensation and imaging method thereof

A random grating based compressive sensing wideband hyperspectral imaging system comprising a front imaging component, an optical splitting component, more than two branches, and a computer, with each branch having an exit pupil transformation component and a compressive spectral imaging component. The system is based on compressive sensing theory, makes use of the correlation between spectra, increases compression rate on the spectral dimension, realizes three-dimensional compressive collection of wideband spectral image data, and greatly reduces data collection amount. The system is capable of measuring spectral image information on a wideband spectrum with a single exposure, and may obtain high spatial resolution and high spectral resolution by means of designing the random gratings on the various spitting paths.

Random grating based compressive sensing wideband hyperspectral imaging system

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Shanghai, China

Shensheng Han