"基于旋转衍射机理的快照式高光谱成像系统优化方法"

Abstract Spectral imaging plays a crucial role in scientific detection and research by providing both two-dimensional spatial and one-dimensional spectral information of the object. However, traditional spectral imaging systems have limitations such as complex optical systems, precise moving parts, and long exposure times, which restrict their applications in various scenarios. This paper introduces a snapshot hyperspectral imaging system based on the rotational diffraction mechanism, which can obtain the hyperspectral information of the target object through a single exposure and image reconstruction. In order to improve the imaging performance and practicality of the system, a series of design optimization methods are proposed. These methods include shortening the optical system's focal length by utilizing a reflective-diffractive hybrid system and detecting distant targets using a prefocusing optical system. Experimental results demonstrate that the proposed optimization design methods effectively enhance the system's sensitivity and improve the quality of the reconstructed images.