Multibeam interferometer for use in a Fourier transform spectrom

Details Multibeam interferometer for use in a Fourier transform spectrom Multibeam interferometer for use in a Fourier transform spectrom

1990-10-24

1992-10-27

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

310311, 310348, G01B 902

Patent

active

051594056

ABSTRACT:
A swinging member multibeam interferometer for use in a Fourier Transform spectrometer has a pair of mirrors mounted on the swinging member in spaced-apart opposition with the planes of the mirrors being at right angles to the plane of the swinging member. The mirrors may be flat and parallel, flat and skewed with respect to each other, or chevron-shaped with the ends being closer than the middle or the ends being further apart than the middle. A beam splitter directs a reflected beam to one of the pair of mirrors and a transmitted beam to the other of the pair of mirrors. A pair of fixed mirrors reflect both the reflected beam and the transmitted beam back to the mirror pair and a detector. The swinging member is controllably moved by a driving device having a lever connected to a shaft with a piezoelectric ceramic pile supporting said shaft. Contracting and expanding the piezoelectric ceramic pile by electrically energizing means moves the lever and the shaft which is connected to the swinging member.

REFERENCES:
patent: 4329055 (1982-05-01), Schaefer et al.
patent: 4435667 (1982-03-01), Kolm et al.
patent: 4654530 (1987-03-01), Dybwald
patent: 4681445 (1987-07-01), Perkins
patent: 4684255 (1987-08-01), Ford
patent: 4915502 (1990-04-01), Brierley

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