INTERFERENTIAL METHOD OF CHECKING-UP OF RADIUS OF CURVATURE OF OPTICAL SPHERICAL SURFACE

摘要

The invention relates to the instrumentation engineering and may be used in controlling the radius of curvature of the concave spherical optical surfaces, in particular the test glasses. The purpose of the invention - improved accuracy control. Exemplary transmissive axial synthesized hologram surface set in front of controlled light and coaxial with it a coherent collimated light beam. Using holograms in its symmetrical pore diffraction culture beds in transmitted light from the collimated beam formed by two directed to the test surface of homocentric light bundle with centers arranged on the calculated distance 2P from one another, and a moire pattern, arises when coincidence in hologram the two Puchkov Sveta obtained by light reflected homocentric bundles of homocentric beams received reflection from the test surface, which is determined by thinning out value. and sign of the controlled radius departing from the calculated distance 2P between the centers of homocentric beams and form a controlled surface. 1 yl. ff