Ruggedized compact interferometer requiring minimum isolation fr

Details Ruggedized compact interferometer requiring minimum isolation fr Ruggedized compact interferometer requiring minimum isolation fr

1985-10-21

1987-09-15

LaRoche, Eugene R.

Optics: measuring and testing

By particle light scattering

With photocell detection

G01B 902

Patent

active

046936033

ABSTRACT:
A small ruggedized interferometer is disclosed, which can operate efficiently in spite of being subject to ambient mechanical vibrations. A prior art structure was analyzed to diagnose its performance deficiencies. The successful method is a step by step structural solution, beginning with the lowest frequency mechanical vibration resonance in the interferometer, restructuring to raise that frequency, then proceeding to the next lowest mechanical vibration resonance frequency in the interferometer, and so on. The movable mirror is carried by a parallelogram linkage. The minimum resonance in the present interferometer has been raised to approximately 1000 Hertz. A first (lowest) frequency resonance problem solved was due to the motor and its interface with the movable mirror. A second resonance problem solved was due to the vibration of the movable mirror itself. And a third resonance problem solved was due to the bearing means which pivotally connect the parallelogram linkage to the frame and to the movable mirror.

REFERENCES:
patent: 3936193 (1976-02-01), Auth
patent: 4480914 (1984-11-01), Thompson et al.
V. V. Arkhipov, "Fast Scanning Fourier Spectrometer with Electrodynamic Drive", Sov. J. Opt. Technol. 45(10), Oct. 1978.

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