Diffractive optical interferometry for visualization and measurement of optical inhomogeneities MATERIALS (OPTIONS)

摘要

1. Diffraction Interferometer for visualizing and measuring optical inhomogeneities, comprising successively and coaxially disposed on the main optical axis of the partially coherent source of collimated light, a first zone plate and a recording apparatus and a controlled object placed near the optical axis between the light source and the first zone plate or followed by a zone plate near its rear focal plane, wherein the first zone plate chtomezhdu and registering ustroyst tion further and coaxially mounted second zone plate with the geometrical dimensions of which are identical to the first plate, and a spatial filter unit consisting of two confocally arranged lenses and a diaphragm placed in the back focal first plane of the lens, the distance between the zone plates exactly equal to twice the focal length these plates, and the second diffractive structure is an additional zone plate (negative) with respect to that of the first band plastinki.2. Diffraction Interferometer for visualizing and measuring optical inhomogeneities, comprising successively and coaxially disposed on the main optical axis of the source of partially coherent collimated light, a first zone plate and a recording apparatus and a controlled object placed near the optical axis between the light source and the first zone plate or followed zone plate near its rear focal plane, wherein the first zone plate chtomezhdu and registering devices m additional