Accession Number : ADD003506

Title :   Shearing Interferometer.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Southwell,William H

Report Date : 23 Dec 1976

Pagination or Media Count : 11

Abstract : A shearing interferometer that does not require the data analysis of interference fringe patterns which is necessary in prior art interferometers is described. With this interferometer the wavefront being analyzed is focused through a beamsplitter and the shear is performed about the center of curvature of one of the converging wavefronts. This may be accomplished by a flatsurfaced tilted mirror located at the position. The two beams are then recombined by the beamsplitter and another mirror. Another lens recollimates the beams to a detector plane.

Descriptors :   *Patent applications, *Optical interferometers, Adaptive systems, Wavefronts, Data processing

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE