HOLOGRAPHIC METHOD OF DETERMINING CHARACTERISTICS OF OPTICAL SYSTEMS: FOCAL DISTANCES AND FOCAL SEGMENTS

摘要

FIELD: instrument engineering.;SUBSTANCE: invention relates to optical instrument engineering and can be used in optical systems of observation, recording of images, optical measuring systems, holographic systems, during testing of optical systems for determining by non-contact method characteristics of optical systems, namely focal distances and focal or working sections. Disclosed method is characterized by recording test object images in several positions thereof, measuring distance between said positions and linear magnification for each position of test object, differs by the fact that at least four different positions of the test object are selected, for each position the digital holograms of the image of the test object are successively recorded at the invariable position of the registration plane in the image space, and sizes of images of test objects and their positions are determined by means of numerical recovery from images holograms (virtual measurement pickups). There are given formulas for determination of characteristics of optical systems: focal distances, focal sections, working sections.;EFFECT: faster operation and broader functional capabilities of the method.;1 cl, 1 dwg