Abstract
A four-dimensional hyperspectral imager (FDHI) that combines fluorescence spectral detection and 3D surface morphology measurement is proposed. The FDHI consists of a hyperspectral line-scanner, a line structured light stereo vision system, and a line laser. The line laser is used as both the excitation light for the fluorescence and the scanning light line for the 3D profiling. At each scanning step, the system collects both fluorescent and 3D spatial data of the irradiated line region, which are fused to 4D data points based on a line mapping relationship between the datasets, and by scanning across the measurement object, a complete 4D dataset is obtained. The FDHI shows excellent performance with spatial and spectral resolution of 26.0 µm and 3 nm, respectively. The reported FDHI system and its applications provide a solution for 4D detection and analysis of fluorescent objects in meters measurement range, with advantage of high integration as two imaging modules sharing a same laser source.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Jing Luo, Erik Forsberg, Shuai Fu, Yuxin Xing, Jiaqi Liao, Jiong Jiang, Yuhao Zheng, and Sailing He
Opt. Express 30(14) 24804-24821 (2022)
Jing Luo, Shuo Li, Erik Forsberg, and Sailing He
Opt. Express 29(9) 13048-13070 (2021)
Jing Luo, Erik Forsberg, and Sailing He
Appl. Opt. 61(26) 7776-7785 (2022)