Geometrical Optical Image Formation in Infrared Spectrometers

摘要: By using an electronic computer, rays were traced through six optical systems used in infrared spectrometers to determine what broadening of the image takes place as a result geometrical-optical aberrations. The data obtained indicate that Littrow instruments, either prism or grating, form sharp images plane behind entrance slit. Czerny-Turner arrangements front slit which are not so those formed by instrument. Comparison due aberrations with diffraction shows most cases former is considerably less. presented show graphically curvature formed.