Measurement of MRSI's optical imaging quality

An automatic measuring facility for the measurement of the energy distribution of a spot diagram based on the prototype of the Moderate Resolution Spectroradiometric Imager(MRSI) is presented in this paper. The facility consists of four main parts: 1. a microscope objective, 2. a special CCD camera, 3. a scanning system, 4. a data processing and output system which can implement data acquiring, storing and processing of images produced by the tested optical system. The facility can assess the optical imaging quality by obtaining the area of the energy distribution and find out the final image plane by comparing the spot diagram at different positions. The spot diagram gained by the CCD camera can be shown on the display screen in gray mode or color mode. The measuring facility has been developed and used in optical fabrication, assembling and evaluating of MRSI, and it is proved to be effective.