Fourier transform multi-channel spectral imager

A fourier transform multichannel spectral imager, comprising:

• a photodetector comprising a plurality of photosensitive sites flush with a photosensitive surface of the photodetector;
• a network of two majority wave interferometers, each comprising a cavity delimited by two faces facing each other and parallel to the photosensitive surface, the two faces of each interferometer being at a different spacing from one interferometer to the next, the interferometers of the interferometers network being arranged in a plane parallel to the photosensitive surface;
• a network of microlenses formed in a plane parallel to the photosensitive surface;
• each microlens in the network of microlenses being paired with an interferometer in the network of two majority wave interferometers to form an optical pair, the optical pair comprising a focal image plane coincident with the photosensitive surface, the pair facing a section of the photosensitive surface.