White light optical transform device

Details White light optical transform device White light optical transform device

1991-09-09

1993-03-02

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356346, 356365, 359499, G01B 902

Patent

active

051913925

ABSTRACT:
The White Light Optical Fourier Transform Device comprises symmetrical wedges of uniaxial birefringent crystal placed on either side of a half-wave plate to induce an angle between the wavefronts of the polarized components of the beam travelling through the device. The wavefront tilt angle of the output beam is shown to be linearly proportional to the angle of incidence. This is sufficient to generate the necessary phase factor for a Fourier transform of the incident intensity image.

REFERENCES:
patent: 3399591 (1968-09-01), Drougard et al.
patent: 4624563 (1986-11-01), Johnson
patent: 4626100 (1986-12-01), Johnson
"Use of Savart Plates in Grating Interferometers," by T. H. Peek Applied ics, vol. 10, No. 5, May 1971, pp. 1092-1096.
"Generalization of Francon's Modification of the Savart Plate," by T. H. Peek, Applied Optics, vol. 10, No. 10, Oct. 1971, pp. 2235-2239.

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