Patent ID: 6930781
Filing Date: 2005-08-16
Classification: G01J

Abstract:
1. A digitally aberration corrected holographic Fourier transform spectrometer, comprising: an optical interferometer having an input and an output and having first and second mirrors for directing a light beam received at said input along a path between the input and the output; a beamsplitter in said path located to divide said light beam into first and second beams traveling in opposite directions along a portion of said path including said first and second mirrors, said beams being directed at said output by said beamsplitter; said first and second mirrors being displaced to shift said first and second beams to produce two virtual images; optical means in said interferometer for recombining said beams at a location outside of said interferometer; a detector at said location for receiving said recombined beams and detecting interference between said beams; and means connected to said detector for digitally correcting aberrations in interference patterns produced at said detector by said beams.