Share Email Print
cover

Proceedings Paper

Automatic Evaluation Of Angular Movements And Linearity With Holographical Methods
Author(s): M. Celaya; D. Tentori; C. Lopez; C. G. Lopez
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A real time holographic interferometer coupled to an automatic fringe analyzing system is presented to evaluate the linearity of the axial displacement of a translation stage. The 'basic holographic set up can separate the lateral from the longitudinal displacements and simplifies the fringe analysis. In plane rotation is identified by observing the nature of the variation of the fringe contrast with change in the viewing aperture stop. Tilt is idendified and measured in the conventional manner that requires a simple modification (a change in the point of illumination) of the basic setup. The automatic fringe analyzing system identifies the'center of a fringe as the midpoint between any two consecutive points of inflexion of the cosine density variation that may be ride on a variable dc bias due to noise and amplitude fluctuation in the recontructed image.

Paper Details

Date Published: 7 July 1983
PDF: 7 pages
Proc. SPIE 0353, Industrial and Commercial Applications of Holography, (7 July 1983); doi: 10.1117/12.933958
Show Author Affiliations
M. Celaya, Centro de Investigacian Cientifica y de Educacion Superior de Ensenada (C.I.C.E.S.E.) (Mexico)
D. Tentori, Centro de Investigacian Cientifica y de Educacion Superior de Ensenada (C.I.C.E.S.E.) (Mexico)
C. Lopez, Centro de Investigacian Cientifica y de Educacion Superior de Ensenada (C.I.C.E.S.E.) (Mexico)
C. G. Lopez, Centro de Investigacian Cientifica y de Educacion Superior de Ensenada (C.I.C.E.S.E.) (Mexico)


Published in SPIE Proceedings Vol. 0353:
Industrial and Commercial Applications of Holography
Milton Chang, Editor(s)

© SPIE. Terms of Use
Back to Top