ABERRATION ANALYZER OF IMAGING SPECTROMETER WITH CONVEX GRATING

摘要

An aberration analyzer of imaging spectrometer with a convex grating is disclosed. The aberration analyzer of imaging spectrometer comprises: a first concave mirror to reflect light radiated from an object (slit); a convex grating equipped with an aperture stop to diffract light reflected by the first concave mirror; a second concave mirror to reflect light diffracted by the convex grating; and an aberration analyzer which includes a charge-coupled device detector to sense images shaped by light reflected by the second concave mirror. According to the aberration analyzer of imaging spectrometer with a convex grating, a concentric image spectrometer is composed of a convex grating and two concave mirrors, and by deriving and using a function of wavefront aberration converged to Gaussian Image wherein a number of light beams are scattered in the concentric image spectrometer, thereby initial design of the concentric image spectrometer having the least aberration can be performed more quickly and efficiently. Additionally, an effect of offsetting third-order aberration and fifth-order aberration may be obtained.;COPYRIGHT KIPO 2015