Hadamard transform imaging spectrometer

The invention relates to a Hadamard transform imaging spectrometer, which overcomes the defects that after-treatment workload is large, the enhancement function on a certain characteristic spectral coverage cannot be realized, the coding precision is low, the volume is big and the requirements on processing and debugging are high in the prior art. The Hadamard transform imaging spectrometer comprises a preposed imaging system, a first collimating lens, a light-splitting device, a first convergent lens, a digital micromirror device, a second collimating lens, a light-converging device, a second convergent lens and an image surface detector; the preposed imaging system comprises a preposed imaging lens; the first collimating lens, the light-splitting device, the first convergent lens and the digital micromirror device form a light-splitting modulation system; the second collimating lens, the light-converging device, the second convergent lens and the image surface detector form a light-converging imaging system; and the composition of the first collimating lens is the same as that of the first convergent lens, and the composition of the second collimating lens is the same as that of the second convergent lens. The Hadamard transform imaging spectrometer has the advantages of small volume, high coding precision and the like.