STATIC FOURIER-TRANSFORM SPECTROMETER FOR VISIBLE SPECTRUM Russian patent published in 1995 - IPC

FIELD: optical spectral instrumentation. SUBSTANCE: radiation goes into Fourier-transform spectrometer through inlet diaphragm 1. Collimating lens 2 guides radiation on to Michelson interferometer incorporating beam splitter 3, first mirror 5 and second mirror 4. Projection objective 6 transfers interference picture on to optical processor 7 having device to record holograms. First mirror 5 of Michelson interferometer is manufactured in the form of reflective Michelson echelon. Second mirror 4 is turned through angle α=arctg(h/D_sp) with reference to axis parallel to perpendicular to working surface of reflective Michelson echelon, where h is distance between two adjacent lands of Michelson echelon along optical axis of interferometer; D_sp is working size of Michelson echelon along lands. Fourier-transform spectrometer operates in visible spectrum working in real time with holding of "multiplex factor". Analysis of quickly changing and short-living radiation sources is possible. EFFECT: enhanced speed of response and precision. 1 dwg