12 January 1993 Imaging spectrometer based on white-light interferometry
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Many applications of imaging systems require information about the spectrum of light that forms the scene. One way of deriving spectral information from a source is by calculating the Fourier transform of the temporal coherence function, as measured by a Michelson interferometer. This is the basis of Fourier transform infrared spectroscopy (FTIR). With a phase-shifting spatial light modulator, it should be possible to construct a two-dimensional array of Michelson interferometers in order to derive independent spectral estimates for each pixel in a natural light image. Realistic constraints on the range of motion of mirror pixel elements will limit the spectral resolution of such a system, but these limits also allow the use of wide aperture imaging optics, and assure that the data processing burden is within the range of current digital technology.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David J. Lanteigne, David J. Lanteigne, } "Imaging spectrometer based on white-light interferometry", Proc. SPIE 1772, Optical Information Processing Systems and Architectures IV, (12 January 1993); doi: 10.1117/12.140930; https://doi.org/10.1117/12.140930

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