Interferometry device for Fourier transform multiplex spectro-im

Details Interferometry device for Fourier transform multiplex spectro-im Interferometry device for Fourier transform multiplex spectro-im

1990-08-27

1992-07-21

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

G01B 902

Patent

active

051317478

ABSTRACT:
An interferometry device for Fourier transform multiplex spectrometric imaging designed to move relative to an object-zone according to a direction of motion constituting a reference direction for said interferometry device. The device includes a prismatic block of transparent material having a first and a second input/output face meeting in a block edge, a semitransparent plate inside said block, and first and second reflective surfaces forming a roof and arranged facing respectively the first and the second input/output face via the semitransparent plate. The device further has at least one slanted dioptrical separation surface with a dioptry angle (.alpha.) provided between one of the input/output faces and the corresponding reflective surface, and the deviation of the angles of inclination (.beta., .beta.') of the first and second rooflike reflective surfaces relative to the corresponding input/output face is non-zero.

REFERENCES:
patent: 3684379 (1972-08-01), Girard
patent: 4190366 (1980-02-01), Doyle
patent: 4509857 (1985-04-01), Vermande
patent: 4523846 (1985-06-01), Breckinridge et al.
Applied Optics, vol. 24, Nr. 24, Dec. 15, 1985, N.Y., US p. 4394, "Fourier transform infrared spectrometer".

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