Common path interferometer

Details Common path interferometer Common path interferometer

1977-02-11

1979-03-06

Clark, Conrad J.

Optics: measuring and testing

By particle light scattering

With photocell detection

356363, 356353, G01B 902

Patent

active

041427971

ABSTRACT:
A common path interferometer is provided using one or more roof mirrors for effecting an optical path delay required to generate an interferogram of a target signature. The optical arrangement using the roof mirror separates the beam of radiation transmitted from the target to produce a fixed delay between the separated beams and, by rotating the roof mirror, a variable delay between the beams is obtained without leaving the target, thus generating an interferogram between the two interfering beams. The resultant interferogram is converted to a spectrum using conventional inverse Fourier transform techniques.

REFERENCES:
patent: 3825348 (1974-07-01), Nomarski et al.

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