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Title: Method for determining and displaying the spacial distribution of a spectral pattern of received light

An imaging Fourier transform spectrometer (10, 210) having a Fourier transform infrared spectrometer (12) providing a series of images (40) to a focal plane array camera (38). The focal plane array camera (38) is clocked to a multiple of zero crossing occurrences as caused by a moving mirror (18) of the Fourier transform infrared spectrometer (12) and as detected by a laser detector (50) such that the frame capture rate of the focal plane array camera (38) corresponds to a multiple of the zero crossing rate of the Fourier transform infrared spectrometer (12). The images (40) are transmitted to a computer (45) for processing such that representations of the images (40) as viewed in the light of an arbitrary spectral "fingerprint" pattern can be displayed on a monitor (60) or otherwise stored and manipulated by the computer (45).
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) LLNL
Patent Number(s):
US 5539518
Contract Number:
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
method; determining; displaying; spacial; distribution; spectral; pattern; received; light; imaging; fourier; transform; spectrometer; 10; 210; infrared; 12; providing; series; images; 40; focal; plane; array; camera; 38; clocked; multiple; zero; crossing; occurrences; caused; moving; mirror; 18; detected; laser; detector; 50; frame; capture; rate; corresponds; transmitted; computer; 45; processing; representations; viewed; arbitrary; fingerprint; displayed; monitor; 60; otherwise; stored; manipulated; plane array; zero crossing; fourier transform; focal plane; ray camera; transform infrared; received light; infrared spectrometer; /356/