Spectrometers with aberration-corrected concave diffraction gratings and transmissive aberration correctors

摘要

The invention generally relates to spectrometers and optical systems useful therein. More particularly, the invention generally relates to optical systems and systems having improved functionalities, flexibilities, and design options. For example, optical systems of the invention employ an aberration-corrected concave grating along with one or more transmissive aberration correctors.