Fig. 4: Spectral imaging setup and results.
a Micro-graph of a wire-bonded single detector spectrometer of 180 μm diameter. b Imaging system schematic. The objective in the figure is a printed pattern on plain printer paper. c Scanning schematic of the device when imaging. d Data process flow of the spectral imaging. The current-voltage data is measured from different (x, y) positions. The reconstruction spectrum of each pixel was mapped into RGB color through CIE 1931 mapping. e Comparison of imaging results. Left: Image by CCD camera. Right: Reconstructed scanning spectral imaging result. f Spectral imaging results shown in different wavelength channels. g Vision of the integrated spectrometer array for hyperspectral imaging with a flip-chip bond focal plane array configuration. h Cross-section diagram of the focal plane array.
