Frequency marking systems

Details Frequency marking systems Frequency marking systems

1983-02-03

1985-11-19

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

356328, G01J 300

Patent

active

045538395

ABSTRACT:
A frequency marker system for indicating the wavelength of light rays, said system comprising: means for collimating said light rays, first and second grating means aligned with at least a portion of said collimated light waves and separated by a distance .DELTA. for providing Moire patterns, means for determining the changes in wavelengths responsive to changes in frequency by determining deflections of the Moire patterns.

REFERENCES:
Rassudova, Optics & Spectroscopy, vol. 22, No. 3, Mar. 1967, pp. 255-258.

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