Abstract

An optical correlator combining most of the features required by a practical automatic control system has been built and used to control small series of work pieces. The functional properties of such an apparatus have been studied, especially its reliability, its sensitivity to mechanical vibrations and misalignment, and the effect of input position on the maximum control rate. In order to obtain a precisely defined response curve, the filters may be computed using the technique of synthetic holography. Computer holograms were used for the control of elementary objects. The accuracy of their transfer function was verified experimentally, and the influence of their bandwidth on the shape of the response curve was studied.

© 1977 Optical Society of America

Optical processing techniques in the quality control of micromechanics

G. Indebetouw, T. Tschudi, and J. Steffen
Appl. Opt. 17(6) 911-916 (1978)

Quality control of small mechanical pieces using optical correlation techniques

G. Indebetouw, T. Tschudi, and G. Herziger
Appl. Opt. 15(2) 516-522 (1976)

White light optical processing and holography

E. Leith and J. Roth
Appl. Opt. 16(9) 2565-2567 (1977)

Nonlinear optical processing: analysis and synthesis

S. R. Dashiell and A. A. Sawchuk
Appl. Opt. 16(4) 1009-1025 (1977)

Compact optical data processor employing holographic reflective lenses

P. C. Mehta, S. Swami, and V. V. Rampal
Appl. Opt. 16(2) 445-453 (1977)