SPECTROMETRIC METHOD AND DEVICE FOR CARRYING OUT SAID METHOD (VARIANTS)

摘要

The feature of the present methods is that the interference stripe set of a standing light wave is registered in a spatial frequency signal form by means of projecting the image of the above set on a periodical system which contains photo-cells. The electric signals received from the above photo-cells are registered with relation to location of these photo-cells in the periodical system, and analyzed. <??>The proposed spectrometric methods are implemented in interferometers which contains the following optically conjugated elements: a light radiation source, a reflection mirror, one or two thin partially transparent light sensitive films, a periodical system containing photo-cells, a spectrum analyser and optionally a beamsplitter. <??>The present methods of the spectrometry and interferometers for carrying them out allow increasing in the accuracy of measurement of wavelengths by 2-5 times in a wide spectral range.