Imaging spectrometer based on white-light interferometry

David J. Lanteigne

doi:10.1117/12.140930

12 January 1993 Imaging spectrometer based on white-light interferometry

David J. Lanteigne

Proceedings Volume 1772, Optical Information Processing Systems and Architectures IV; (1993) https://doi.org/10.1117/12.140930
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

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.

Citation Download Citation

David J. Lanteigne "Imaging spectrometer based on white-light interferometry", Proc. SPIE 1772, Optical Information Processing Systems and Architectures IV, (12 January 1993); https://doi.org/10.1117/12.140930

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