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Abstract

The interferometric device for performing spectroscopic measurements includes a rectangular array of interferometers, each consisting of two partially transparent parallel mirrors arranged so that a distance between the two mirrors of each interferometer is unique; an array (9) of photodetectors positioned behind the rectangular array of interferometers to produce output signals and a device for transforming these output signals to produce a spectrum. In one embodiment the interferometers are formed by two parallel plates (1,2) having the two flat surfaces (3, 4) facing away from each other and two facing surfaces (5,6) each provided with steps (11) of identical step height, but with the step height on one plate differing from the step height on the other and with the two plates (1,2) assembled together so that the steps (11) on the one plate are oriented perpendicularly to the steps (11) on the other. In another embodiment the interferometers are formed by a first parallel plate (12) having two opposing flat sides and a second parallel plate (13) having a first flat side and a second side remote from the first flat side provided with steps (17) of identical height arranged in rows between two opposing narrow sides (18,19) so that a last step next to one narrow side in one row follows a first step in a preceding row next to the other narrow side.

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First Claim