Abstract: All-reflection Fourier transform imaging spectrometer has important application in the fields of aerospace remote sensing etc. The specifically set of the cylindrical lens and collimation system causes the optical structure sophisticated. That not only gains the difficulty of imaging spectrometer optical design, installation and maintenance, but also increases the weight of imaging spectrometer and the loss of light energy. A non-imaging lens’ structural has been proposed to achieve the imaging spectral detection and studies the theory of it’s detection mechanism, which shows the feasibility of achieving imaging spectral detection based on this structural. The spectral detection simulation experiments of wavelength (632.8nm,940nm and 3000nm) show it’s deviation of spectral measurement is less than 1%.

Key words: spectroscopy；all-reflection Fourier transform imaging spectrometer；imaging lens；spectral detection