Fabry-perot interferometer

Details Fabry-perot interferometer Fabry-perot interferometer

1977-11-11

1980-09-30

Clark, Conrad J.

Optics: measuring and testing

By particle light scattering

With photocell detection

356352, G01B 902

Patent

active

042252369

ABSTRACT:
A vernier tandem Fabry-Perot interferometer includes a first pair of plane mirrors forming a first interferometer and a second pair of plane mirrors forming a second interferometer which is receptive of the output signal of the first interferometer. One mirror of each pair is mounted on a common movable support in positions such that when the support is moved in a given direction the spacing between one pair of mirrors remains in the same ratio to the spacing between the other pair of mirrors as the original ratio between these spacings. With this ratio maintained constant, the system continues to exhibit a single pass band at frequencies of interest corresponding to different spacings between mirror pairs. A deformable parallelogram maintains mirror parallelism while a transducer provides mirror motions. Other features are also disclosed.

REFERENCES:
patent: 2381728 (1945-08-01), Dimmick
patent: 3263167 (1966-07-01), Foster et al.
patent: 3373651 (1968-03-01), Mack et al.
patent: 3488123 (1970-01-01), Nichols
patent: 3999854 (1976-12-01), Barrett

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