POLYCHROMATOR Russian patent published in 2024 - IPC G01J3/36 

FIELD: spectroscopy.

SUBSTANCE: invention relates to spectroscopy, in particular to polychromators. Polychromator includes a first input aperture, a first input lens, n flat interference filters having a different transmission and reflection wavelength band, alternating with (n-1) intermediate spherical mirrors, and n optical detectors equipped with focusing lenses, located on the radiation path transmitted by the interference filter. In addition, the polychromator comprises a second input aperture and a second input lens installed after the last flat interference filter, two input spherical mirrors installed respectively between the first input lens and the first flat interference filter, and between second input lens and last flat interference filter, wherein input spherical mirrors, intermediate mirrors and interference filters are installed at angle of 2–20 degrees relative to the optical axis.

EFFECT: enabling simultaneous analysis of the spectrum and intensity of two light pulses arriving at the input apertures of the polychromator, fewer interference filters and detectors, and high accuracy of relative measurements of intensity of light signals.

3 cl, 1 dwg