MEASURING METHOD OF PUPIL DECENTERING ECCENTRICITY RATIO OF OPTICAL SYSTEM

摘要

PURPOSE: To easily measure a pupil decentring eccentricity ratio in conjunction with the image deterioration due to the decentering eccentricity. ;CONSTITUTION: Four point images of light spot on a reference light axis by an optical system to be detected is formed on an image face 6 of a relay lens 4 having a pupil-four-divided prism 5 provided in the vicinity of an emitting pupil. On the basis of an area or each center intensity of each binary coded image in identical levels of four point images, a pupil decentering eccentric ratio is calculated.;COPYRIGHT: (C)1994,JPO&Japio