FOURIER-SPECTROMETER Russian patent published in 1997 - IPC

FIELD: optical instrumentation engineering. SUBSTANCE: spectrometer has optically connected radiation source, two flat mirrors, light beam splitter, and position-sensitive linear photoreceiver. Off-axis elliptic and parabolic mirrors are also provided. Elliptic mirror is positioned at input of light beam splitter so that it displays input aperture of spectrometer being in first focus of ellipse, in second focus of ellipse located in symmetry with flat mirrors. Parabolic mirror is positioned at output of light beam splitter so that source is arranged in first focal plane, and photoreceiver, in rear focal plane. EFFECT: more efficient design. 1 dwg