AUTOCOLLIMATION SPECTROMETER WITH SPECTRAL DECOMPOSITION IN SAGITTAL DIRECTION Russian patent published in 2017 - IPC G01J3/16 G01J3/22 G02B17/06 

FIELD: physics.

SUBSTANCE: spectrometer includes an input slit, a lens and a dispersing device located on the other side of the optical axis against the input slit. The lens is made of three mirrors: the first - a positive off-axis concave mirror in the form of an oblate ellipsoid, the second - a convex spherical mirror, the third - a positive concave mirror in the form of an off-axis hyperboloid fragment. The input slit and its image is oriented parallel to the longitudinal plane and are offset in the meridional and sagittal planes against the optical axis of the lens. Decomposition of the input slit image in the spectrum is carried out in the sagittal direction. The main section of the dispersing device is perpendicular to the meridional plane inclined to the optical axis.

EFFECT: providing the spectral decomposition in the sagittal direction with the enlarged linear field, improving the adaptability, small size and weight, easy alignment, high image quality throughout the operating spectral range.

3 cl, 5 dwg, 1 tbl